Entries |
Document | Title | Date |
20080196691 | Direct Injection Internal Combustion Engine and Injector Used for Direct Injection Internal Combustion Engine - It is necessary to attain the combustion stability when performing ignition retarding in order to reduce exhaust gas and raise the exhaust gas temperature under a cold start condition, as well as soot reduction under a fully open throttle valve condition. | 08-21-2008 |
20080210195 | APPARATUS FOR AND METHOD OF CONTROLLING INTAKE OPERATION OF AN INTERNAL COMBUSTION ENGINE - Opening timing of the intake valve of an internal combustion engine is controlled to take a value within a range from 30° to 140° after the top dead center of intake stroke during a period of time before completion of engine warming-up from starting of an engine, and also, effective opening area of the intake valve is made smaller than the effective opening area thereof that occurs after completion of engine warming-up in order to increase the flow velocity of intake air entering through the intake valve, and at the same time, fuel is injected into a combustion chamber during at least one of a first period of time in which the flow velocity of intake air is high immediately after the intake valve is opened and a second period of time previous to the first period of time in which the flow velocity of intake air is high, and during a third period of time starting immediately before ignition timing. | 09-04-2008 |
20080295798 | ADAPTIVE ENGINE INJECTION FOR EMISSIONS REDUCTION - NOx and soot emissions from internal combustion engines, and in particular compression ignition (diesel) engines, are reduced by varying fuel injection timing, fuel injection pressure, and injected fuel volume between low and greater engine loads. At low loads, fuel is injected during one or more low-pressure injections occurring at low injection pressures between the start of the intake stroke and approximately 40 degrees before top dead center during the compression stroke. At higher loads, similar injections are used early in each combustion cycle, in addition to later injections which preferably occur between about 90 degrees before top dead center during the compression stroke, and about 90 degrees after top dead center during the expansion stroke (and which most preferably begin at or closely adjacent the end of the compression stroke). These later injections have higher injection pressure, and also lower injected fuel volume, than the earlier injections. | 12-04-2008 |
20080295799 | Arrangement and Method for a Combustion Engine - An arrangement and a method for a combustion engine for self-ignition of a fuel mixture. A first device supplies a first partial quantity of the fuel mixture to the combustion space, and a second device supplies a second partial quantity of the fuel mixture to the combustion space, which second partial quantity of the fuel mixture is at a different fuel concentration from the first partial quantity of the fuel mixture. The devices supply the first and the second partial quantities of the fuel mixture as to create in the combustion space at least one region which is at a higher fuel concentration than other regions and in which the self-ignition of the fuel mixture is intended to start. | 12-04-2008 |
20080302329 | Method and apparatus for controlling ignition timing in a compression-ignition engine operating in an auto-ignition mode - A method for controlling timing of ignition of a fuel charge in a compression-ignition engine operating in a controlled auto-ignition mode wherein the engine includes controllable intake and exhaust valve actuation systems is described. The method comprises determining a preferred ignition timing for a cylinder charge and a mass of the fuel charge based upon operator torque request. A portion of the fuel charge is partially oxidized during a negative valve overlap period immediately prior to a compression stroke. Magnitude of the portion of the fuel charge is based upon the preferred ignition timing of the cylinder charge. A remainder of the fuel charge is injected into the cylinder during the compression stroke. | 12-11-2008 |
20080308065 | FUEL INJECTION CONTROL DEVICE AND ENGINE CONTROL SYSTEM - A fuel injection control device for performing injection control of an injector has a program for performing fuel injection of a predetermined injection quantity (a small quantity) with an injector based on establishment of a first permission condition during fuel cut of the engine and for acquiring a fuel injection quantity indicating a fuel injection characteristic of the injector and a program for performing fuel injection of a predetermined injection quantity (a small quantity) with the injector based on establishment of a second permission condition during idling of the engine and for acquiring a fuel injection quantity indicating the fuel injection characteristic of the injector. Thus, the fuel injection control device and an engine control system including the fuel injection control device can suitably sense the fuel injection characteristic of the injector. | 12-18-2008 |
20090013961 | Method for operating an internal combustion engine and device for implementing the method - A method for operating an internal combustion engine in which at least one secondary fuel injection is carried out, and a device for implementing the method. The level of the motor oil of the internal combustion engine is ascertained, which is compared to a first threshold value for the maximum possible oil level. If a threshold is exceeded, a warning signal is provided. Preferably an oil-dilution signal, which is a measure for the quantity and/or the volume of the oil dilution input into the motor oil of the internal combustion engine by the at least one secondary fuel injection, is taken into account when ascertaining the oil level. | 01-15-2009 |
20090020098 | FUEL INJECTION CONTROL METHOD FOR AN INTERNAL-COMBUSTION ENGINE AND ENGINE USING THE SAME - The invention relates to a method for control of fuel injection for an internal combustion engine, in particular with direct fuel injection, comprising at least one cylinder ( | 01-22-2009 |
20090025680 | Multi-Hole Injector, in-Cylinder Gasoline Injection Type Internal Combustion Engine and Control Method for the Engine - Improvement of combustion stability in retard ignition at the time of starting in a cold state, high output in a full throttle condition, reduction of smoke, and prevention of wear of the cylinder liner caused by oil dilution, are to be attained. In connection with the flow of fuel into each hole and a fuel inflow angle which is determined by the axis of each hole formed in a plate, the fuel inflow angle of an hole directed to a spark plug is set large to reduce an effective flow path area, thereby making the amount of fuel in the hole smaller than in other holes. A shallow cavity is formed in a piston crown face and a small prominence confronting fuel sprays is formed within the cavity. | 01-29-2009 |
20090038583 | MULTI-INJECTION COMBUSTION CYCLE SYSTEMS FOR SIDI ENGINES - The fuel injection system includes a fuel injector that injects fuel directly into a combustion chamber of a cylinder of an engine. The control module initiates multiple fuel injections in a combustion chamber during a combustion cycle of the cylinder via the fuel injector. | 02-12-2009 |
20090095251 | Method for operating an internal combustion engine and internal combustion engine for such a method - In a method for operating a direct-injection auto-ignition internal combustion engine and a correspondingly configured internal combustion engine including a piston top having integrally formed therein a piston recess which merges into an essentially annular stepped space and an injector forming injection jets directed toward the stepped space, the jets are deflected there in such a way that a first part quantity of fuel is directed in an axial direction and a radial direction into the piston recess, a second part quantity of fuel is deflected in the axial direction and the radial direction over the piston top and third part quantities of fuel are deflected into a circumferential direction so as to impinge one onto the other in the circumferential direction and to be deflected radially inwardly, the start of injection and the injection duration being coordinated with one another and with the crank angle of the internal combustion engine in such a way that the third part quantities of adjacent injection jets meet each other in the circumferential direction with a velocity of at least 15 m/s. | 04-16-2009 |
20090107455 | Engine Idle Speed and Turbocharger Speed Control - Various methods are described for controlling engine operation for an engine having a turbocharger and direction injection. One example method includes performing at least a first and second injection during a cylinder cycle, the first injection generating a lean combustion and the second injection injected after combustion such that it exits the cylinder unburned into the exhaust upstream of a turbine of the turbocharger; and adjusting at least the first injection based on engine speed, where the at least first and second injection are performed responsive to turbocharger speed. | 04-30-2009 |
20090107456 | ENGINE IDLE SPEED AND TURBOCHARGER SPEED CONTROL - Various methods are described for controlling engine operation for an engine having a turbocharger and direction injection. One example method includes performing at least a first and second injection in response to a driver action. The first and second injection may be performed during a cylinder cycle, the first injection generating a lean combustion and the second injection injected after combustion such that it exits the cylinder unburned into the exhaust upstream of a turbine of the turbocharger. | 04-30-2009 |
20090126682 | CONTROL APPARATUS AND METHOD FOR DIRECT INJECTION SPARK IGNITION INTERNAL COMBUSTION ENGINE - In a direct injection spark ignition internal combustion engine in which, after the engine has been started at a low temperature, the tumble flow is intensified in each cylinder by the fuel injected at a time near the intake stroke bottom dead center so that homogenous combustion is properly performed and additional fuel is then injected after the ignition time in order to increase the exhaust gas temperature, the thrust force of fuel injected from a fuel injection valve is adjusted in at least two levels such that the thrust force of the additional fuel becomes weaker than the thrust force of the fuel injected at the time near the intake stroke bottom dead center. | 05-21-2009 |
20090151692 | METHOD AND APPARATUS FOR INJECTING FUEL INTO A COMPRESSION-IGNITION ENGINE - A method to manage and control engine operation includes injecting an initial mass of fuel into a combustion chamber to form a combustion charge, monitoring combustion and injecting a main mass of fuel into the combustion chamber substantially coincident with a start of combustion of the combustion charge. | 06-18-2009 |
20090211553 | Method and Control Device for Metering Fuel To Combustion Chambers of an Internal Combustion Engine - A method for metering fuel into a combustion chamber of an internal combustion engine is provided, in which a fuel quantity to be metered for a combustion is metered by a preinjection and at least one additional injection, and in which, in the operation of the internal combustion engine, quantity errors of the preinjection are ascertained from the signal of at least structure-borne noise sensor. The method is distinguished in that a correction value is formed as a function of the quantity error of the preinjection, and at least one of the additional injections is corrected using the correction value. A control device is also provided that controls the method. | 08-27-2009 |
20090301430 | Method for metering fuel into combustion chambers of an internal combustion engine - A method and control unit for metering fuel into at least one combustion chamber of an internal combustion engine comprising at least one pilot injection and one main injection per combustion cycle, combustion features being detected and an effect of a fuel quantity injected prior to the main injection being ascertained from the combustion features. An actual value of a combined effect of at least two pilot injections per combustion cycle is ascertained and the actual value is regulated to a setpoint value via an intervention on at least one of the pilot injections. | 12-10-2009 |
20090301431 | Method of Controlling Common Rail Fuel Injection Device - A method for controlling a common-rail fuel injection system, which avoids the adverse effect of the pilot injection on the main injection while driving an engine and maximizes the cleaning up of the exhaust gas by the pilot injection or the like, is provided. In the common-rail fuel injection system performing a multistage injection, a pilot injection timing θp at a crankshaft angle and a main injection timing θm at the crankshaft angle base are controlled by a ECU. The ECU calculates a pilot injection interval Tpin at a time base and adjusts the main injection timing θm when the pilot injection interval Tpin is less than the predefined threshold (1 (ms) in the present embodiment). | 12-10-2009 |
20090320789 | Multi Fuel Co Injection System for Internal Combustion and Turbine Engines - An improved multi-fuel supply and co-injection system and method for powering internal combustion and turbine engines, whereby various combinations of fuels, both liquid and gaseous, may be mixed together and fed into the system, under the real-time control of a microprocessor responding to a variety of sensors and acting on a variety of control devices, all working together in a manner designed to enhance the utilization of the thermal content of the various fuels, and in particular to enhance the combustion efficiency and increase the power output while decreasing the consumption of fuel, calculated both by quantity and by cost and whereby the liquid fuel lubricates the moving parts of the injection system. | 12-31-2009 |
20090320790 | System and Method for Compensation of Fuel Injector Limits - A method for an engine configured to deliver an actively varying relative ratio of a first and second fuel via a delivery system having a first and second injector for a cylinder of the engine, where the first fuel has a lesser relative amount of alcohol, the method comprising of varying an amount of injection from the first and second injector with operating conditions, when said variation causes said first injector to approach a first minimum opening condition, increasing injection of said second injector and disabling said first injector, and when said variation causes said second injector to approach a second minimum opening condition, avoiding further reduction of said second injector and decreasing injection of said first injector. | 12-31-2009 |
20100012080 | ARRANGEMENT AND METHOD FOR EFFICIENT COMBUSTION OF FUEL IN A COMBUSTION ENGINE - In a combustion space of a combustion engine, an inlet valve to supplies a gaseous medium which contains oxygen to the combustion space. A movable piston to compress the gaseous medium in the combustion spaces. An injector injects fuel in the combustion space in a jet which comprises a multiplicity of small fuel drops. The injector injects fuel in the combustion space at such a high initial velocity that the fuel injected in the jet mixes with the gaseous medium to form a substantially homogeneous mixture before the mixture has been decelerated to a velocity at which the fuel ignites and burns. Devices may cool the gaseous medium and the fuel before entry into the combustion space. | 01-21-2010 |
20100031919 | METHOD FOR CYLINDER SYNCHRONIZATION OF AN INTERNAL COMBUSTION ENGINE - The aim of the invention is to optimize the running smoothness of an internal combustion engine. To achieve this aim, the individual cylinders are synchronized with respect to their torque contribution. According to the method, fuel is injected into the combustion chamber of a cylinder in at least one injection step, the at least one injection contributing to the torque of the internal combustion engine. Fuel is injected into the combustion chamber of the cylinder in a torque neutral manner by way of a secondary injection during a working stroke of the cylinder and the amount of fuel of the secondary injection us calculated in such a manner that the exhaust gas substantially corresponds to a stoichiometric air/fuel mixture. | 02-11-2010 |
20100037852 | METHOD FOR INTRODUCING FUEL INTO A COMBUSTION CHAMBER OF AN INTERNAL COMBUSTION ENGINE - A method for introducing fuel into a combustion chamber of an internal combustion engine is provided, in which fuel is injected at variable metering directly into the combustion chamber by a first fuel injector on the one hand, and into an air aspiration channel leading to the combustion chamber by a second fuel injector on the other hand. To ensure a reliable cold start of the internal combustion engine when using regenerative fuels even at low temperatures, in the cold start of the internal combustion engine a partial quantity of the required overall fuel quantity is injected via the second fuel injector, this partial quantity being the particular fuel quantity that exceeds a maximum fuel quantity able to be injected via the first fuel injector. | 02-18-2010 |
20100043746 | Method and device for diagnosing an internal combustion engine; computer program and computer program product - In a method for diagnosing an internal combustion engine having first and second fuel injectors, if a misfire is detected, the following steps are performed in sequence: a first fuel quantity of the fuel is introduced only by the first fuel injector; a check is performed to determine whether a misfire results from the introduction of a first fuel quantity in the first step; a second fuel quantity of the fuel is introduced only by the second fuel injector; a check is performed to determine whether a misfire results from the introduction of the second fuel quantity in the third step; and an engine error is diagnosed if a misfire was detected in the second or in the fourth step. | 02-25-2010 |
20100043747 | FUEL INJECTION SYSTEM OF COMPRESSION IGNITION INTERNAL COMBUSTION ENGINE - An object of the present invention is to control the discharge amount of unburned fuel components in the internal combustion engine. According the present invention, the number of times of execution of sub fuel injection is changed based on the operation range within which the operation state of the internal combustion engine falls so that the lower the engine load of the internal combustion engine is, and the lower the number of engine revolutions of the internal combustion engine is, the more the number of times of execution of sub fuel injection is increased. Furthermore, the lower the atmospheric pressure is, the lower the temperature of the cooling water of the internal combustion engine is, or the lower the temperature of the intake air of the internal combustion engine is, the more an operation range in which the number of times of execution of sub fuel injection is large is expanded to higher loads and higher revolutions. | 02-25-2010 |
20100077989 | CONTROL OF SPARK IGNITED INTERNAL COMBUSTION ENGINE - There is provided, in one aspect of the present description, a method of controlling a spark ignited internal combustion engine having a fuel injector which injects fuel directly into its combustion chamber. The method comprises stopping the fuel injection if a desired torque for the engine is a predetermined torque or less and a speed of the engine is a predetermined speed or greater. The method comprises resuming the fuel injection by injecting a first amount of fuel directly into the combustion chamber during a negative pressure period and injecting a second amount of the fuel into the combustion chamber during an intake period. The method further includes resuming the fuel injection by injecting a third amount of the fuel directly into the combustion chamber during the negative pressure period and injecting a fourth amount of the fuel into the combustion chamber during the intake period. | 04-01-2010 |
20100077990 | CONTROL OF SPARK IGNITED INTERNAL COMBUSTION ENGINE - There is provided a method of controlling a spark ignited internal combustion engine having a fuel injector which injects fuel directly into its combustion chamber. The method comprises injecting a total amount of fuel into a combustion chamber by early in a compression stroke during a cylinder cycle at a first engine speed. The method further comprises injecting a first stage of fuel into the combustion chamber during a cylinder cycle by an early in a compression stroke of the cylinder cycle, and injecting a second stage of fuel by late in the compression stroke during the cylinder cycle at a second engine speed less than the first engine speed, after injecting the first stage of fuel. The amount of the second stage fuel is greater than an amount of said first stage fuel. Accordingly, the first and second stage fuels may not be pre-ignited before the spark ignition. | 04-01-2010 |
20100083934 | Combustion Method for a Reciprocating Piston Internal Combustion Engine - A reciprocating engine includes a combustion chamber, and a gas exchange inlet valve and a gas exchange outlet valve for a charge cycle. The method introduces an inlet gas into the combustion chamber in an intake phase; introduces a primary quantity of fuel into the combustion chamber during the intake phase and/or a compression phase; compresses the inlet gas and the fuel in the compression phase; ignites a mixture of inlet gas and fuel formed in the combustion chamber; and expands and discharges an exhaust gas formed by the combustion in an expansion phase. A pilot quantity of fuel is introduced into the combustion chamber before the primary quantity of fuel is introduced. Intermediate products of the pilot quantity of fuel are formed and the primary quantity of fuel is introduced into the combustion chamber during the compression phase such that complete ignition of the mixture consisting of inlet gas and the intermediate products is suppressed and other intermediate products are formed until a controlled ignition of the mixture and other intermediate products occurs. | 04-08-2010 |
20100101529 | ENGINE OUTPUT CONTROL SYSTEM AND METHOD - A system for an engine, comprising a cylinder located in the engine, a turbocharger coupled to the engine, a first injector for injecting a first fuel into said cylinder, wherein said first injector is a direct cylinder injector where said direct cylinder injector delivers a liquid including an alcohol, a second injector for injecting a second fuel into said cylinder, wherein said second injector is a port injector, where said port injector delivers a liquid including gasoline, a catalytic device configured to receive exhaust gases produced by at least the cylinder, and a controller configured to vary an amount of said first and second fuel injection during engine operation based on operating conditions, where amounts of variation of said first and second fuels are set to maintain a substantially stoichiometric mixture, the controller further configured to increase a relative amount of injection of the second injector in response to an indication of engine knock during a first operating condition, decrease engine boosting in response to the indication of engine knock during a second condition; and retard ignition timing in response the indication of engine knock during a third condition. | 04-29-2010 |
20100108024 | FUEL INJECTION CONTROL APPARATUS AND FUEL INJECTION CONTROL METHOD - According to an internal combustion engine fuel injection control apparatus and control method, when an operating region of the engine shifts from a fuel cut region in which no fuel is injected to a low load region in which a small amount of fuel is injected, or visa versa, at least one pilot injection is executed ahead of a main injection in the low load region, and the number of pilot injections is determined according to the engine coolant temperature. This injection control makes it possible to ensure drivability while suppressing the amount of HC produced. | 05-06-2010 |
20100108025 | Diesel Engine - In a diesel engine | 05-06-2010 |
20100116243 | FUEL INJECTION CONTROL APPARATUS AND FUEL INJECTION CONTROL METHOD FOR INTERNAL COMBUSTION ENGINE - A fuel injection valve coupled to a common rail is provided. When fuel injection is carried out, the fuel pressure in the fuel injection valve pulsates. An interval between a pilot injection and a main injection is set so that the main injection is carried out at a zero gradient timing as a timing when the gradient of the fuel pressure in the fuel injection valve after the pilot injection is approximately equal to zero. Owing to a fuel injection control apparatus and a fuel injection control method for an internal combustion engine that perform the above-mentioned control, the fuel injection amount for the subsequent fuel injection following the preceding fuel injection can be reliably held equal to a normal amount. | 05-13-2010 |
20100116244 | SYSTEM AND METHOD FOR ENGINE AIR-FUEL RATIO CONTROL - A method for operating an engine having a first injector for injecting a first fuel into a cylinder of the engine and a second injector for injection a second fuel into said cylinder of the engine, the engine further having at least an exhaust gas oxygen sensor, the method comprising of varying an amount of said first fuel injection in response to said sensor under a first operating condition, and varying an amount of said second fuel injection in response to said sensor under a second operating condition. | 05-13-2010 |
20100116245 | Hybrid Vehicle Propulsion System Utilizing Knock Suppression - A hybrid propulsion system for a vehicle and method of operation are provided. As one example, the system comprises an engine including at least one combustion chamber, a motor configured to selectively propel the vehicle via the drive wheel, a fuel system configured to deliver a first substance and a second substance to the combustion chamber in varying relative amounts, wherein the first substance includes a fuel and the second substance includes a greater concentration of a knock suppressing substance than the first substance; and a control system configured to operate the fuel system to vary the relative amounts of the first substance and the second substance delivered to the combustion chamber in response to an operating condition while operating the motor to propel the vehicle. | 05-13-2010 |
20100132661 | METHOD OF USING LEAN FUEL-AIR MIXTURES AT ALL OPERATING REGIMES OF A SPARK IGNITION ENGINE - The present invention refers to a method of using lean fuel-air mixtures at all operating regimes of a spark ignition engine, which is provided with an intake port fuel injection system, wherein said method is characterized in that in order to achieve the efficient lean mixture combustion process, an HHO oxy-hydric gas direct injection should be at a minimum pressure of 10 bar, during compression stroke, after intake valve closing, so that the hydrogen/fuel mixture volumetric fractions value is within the range of about 15% to 25%. | 06-03-2010 |
20100139614 | METHOD OF PILOT INJECTION CONTROL AND SYSTEM THEREOF - Change in number of pilot injection is avoided in a transient response of an engine, so that driving feeling and travelling feeling are improved. | 06-10-2010 |
20100147262 | ENGINE FUEL SUPPLY SYSTEM - Apparatus for controlling dual fuel supply to a fuel injected engine having an electronic engine management system ( | 06-17-2010 |
20100162992 | FUEL INJECTION SYSTEM WITH HIGH REPEATABILITY AND STABILITY OF OPERATION FOR AN INTERNAL-COMBUSTION ENGINE - The system comprises an injector controlled by commands of a control unit. The injector comprises a dosing servo valve having a control chamber provided with an outlet passage that is opened/closed by an open/close element that is axially movable. The open/close element is carried by an axial guide element that is separate from an anchor of an electromagnet. The open/close element is held in the closing position by a spring acting through an intermediate body. Preferably, the strokes of the open/close element and of the anchor are chosen so as to eliminate, upon closing of the solenoid valve, the rebounds of the open/close element subsequent to the first rebound. The control unit controls an injection comprising a pre-injection and a main injection, via two distinct electrical commands, which are spaced apart by a dwell time such as to occur in an area of reduced variation of the amount of injected fuel; therefore, the stability of operation of the system increases as said dwell time varies. | 07-01-2010 |
20100170470 | FUEL DELIVERY SYSTEM FOR MULTI-FUEL ENGINE - A fuel delivery system for an engine and a method of its operation are described. The fuel delivery system includes a first fuel injector for delivering a first fuel to a cylinder of the engine; a second fuel injector for delivering a second fuel to the cylinder; an electrical relay system disposed between a first electrical potential and each of the first and second fuel injectors; an electronic driver disposed between a second electrical potential and each of the first and second fuel injectors; and a control module. The control module is configured to switch the electrical relay system between first and second positions to select one of the first and second fuels, respectively. The electronic driver is closed by the control module to deliver the selected one of the first or second fuel to the first cylinder via a respective one of the first or second fuel injectors. | 07-08-2010 |
20100186708 | FUEL INJECTION SYSTEM WITH HIGH REPEATABILITY AND STABILITY OF OPERATION FOR AN INTERNAL-COMBUSTION ENGINE - The fuel injection system comprises a fuel injector controlled by commands of a control unit. The fuel injector comprises a metering servo valve having a control chamber provided with an outlet passage that is opened/closed by an open/close element that is axially movable. The open/close element is carried by an axial guide element that is separate from an armature of an electromagnet. The open/close element is held in the closing position by a spring acting through an intermediate body. In some instances, the strokes of the open/close element and of the armature are chosen so as to eliminate, upon closing of the servo valve, the rebounds of the open/close element subsequent to the first rebound. The control unit controls a fuel injection comprising a pilot fuel injection and a main fuel injection, via two distinct electrical commands, which are spaced apart by a dwell time such as to occur in an area of reduced variation of the amount of injected fuel. Therefore, the stability of operation of the fuel injection system increases as the dwell time varies. | 07-29-2010 |
20100192905 | SYSTEM AND METHOD FOR TIP-IN KNOCK COMPENSATION - A system for an engine of a vehicle includes methanol and water injection to abate engine knock. The injection is provided directly into the cylinder. | 08-05-2010 |
20100224167 | Warm Up Strategy for Ethanol Direct Injection Plus Gasoline Port Fuel Injection - A system for an engine, comprising of a cylinder of the engine; a first injector configured to inject a first substance to said cylinder; a second injector configured to inject a second substance to said cylinder; and a controller configured to commence combustion in the engine by injecting fuel into said cylinder, where said fuel is injected by only one of said first and second injectors during said start and/or warm-up. | 09-09-2010 |
20100236517 | FOUR-CYCLE ENGINE - A four-cycle engine ( | 09-23-2010 |
20100242898 | ENGINE SYSTEM AND METHOD FOR SUBSTANTIALLY NOX-FREE COMBUSTION OF A FUEL IN A COMPRESSION IGNITION ENGINE - Engine system comprising a compression ignition engine ( | 09-30-2010 |
20100242899 | SUPERCHARGED DIRECT FUEL INJECTION ENGINE - Various systems and methods are disclosed for controlling an internal combustion engine system having an internal combustion engine, a fuel injector which directly injects fuel into a combustion chamber of the internal combustion engine, and a supercharger which supercharges air into the combustion chamber. One example method comprises, injecting fuel into the combustion chamber multiple times so that a first part of the fuel is self ignited and a last part of the fuel being injected during the compression stroke or later in a cylinder cycle when a desired torque of said internal combustion engine system is in a first range; and increasing a pressure of air which the supercharger charges into the combustion chamber as amount of fuel injected into the combustion chamber during a cylinder cycle increases when the desired torque is in the first range. | 09-30-2010 |
20100242900 | CONTROL OF DIRECT FUEL INJECTION ENGINE - Various systems and methods are disclosed for controlling an internal combustion engine system having an internal combustion engine, and a fuel injector which directly injects fuel into a combustion chamber of the internal combustion engine. One example method comprises, when a desired torque for the internal combustion engine system is in a first range, injecting a first stage fuel into the combustion chamber so that it ends during a middle stage of a compression stroke at the latest in a cylinder cycle; determining combustion of the first stage fuel initiated by its compression self-ignition; and injecting a second stage fuel into the combustion chamber in a period when the determined combustion of the first stage fuel continues at a timing determined so as to cause combustion of the second stage fuel with its compression self-ignition. | 09-30-2010 |
20100242901 | CONTROL OF INTERNAL COMBUSTION ENGINE - An exemplary method for controlling an internal combustion engine system includes, when a desired torque is equal to or greater than a first torque, opening an exhaust valve and injecting pilot fuel into a combustion chamber at a first pressure before an exhaust top dead center in a cylinder cycle, opening an intake valve in the cylinder cycle after said injecting, and injecting main fuel in the cylinder cycle after said opening of said intake valve. The method further includes, when a desired torque is less than said first torque, opening said exhaust valve and injecting pilot fuel into the combustion chamber at a second pressure that is greater than the first pressure before an exhaust top dead center in the cylinder cycle, opening said intake valve in the cylinder cycle after said injecting, and injecting main fuel in the cylinder cycle after said opening of said intake valve. | 09-30-2010 |
20100251993 | BI-FUEL INTERNAL COMBUSTION ENGINE - A bi-fuel internal combustion engine comprises an engine body having a cylinder axis inclined toward one side; a branched intake pipe extending from a cylinder head at an inclined upper face side of the engine body to the other side; liquid fuel injection valves for injecting liquid fuel to the intake pipe; and gas fuel injection valves for injecting a gas fuel to the intake pipe. The liquid fuel injection valves are arranged in the vicinity of the cylinder head at one side of the intake pipe, and the gas fuel injection valves are arranged at an upper side exceeding the highest position of a cylinder head cover mounted on the cylinder head at one side of the liquid fuel injection valves. | 10-07-2010 |
20100263625 | FUEL MANAGEMENT SYSTEM FOR VARIABLE ETHANOL OCTANE ENHANCEMENT OF GASOLINE ENGINES - Fuel management system for efficient operation of a spark ignition gasoline engine. Injectors inject an anti-knock agent such as ethanol directly into a cylinder of the engine. A fuel management microprocessor system controls injection of the anti-knock agent so as to control knock and minimize that amount of the anti-knock agent that is used in a drive cycle. It is preferred that the anti-knock agent is ethanol. The use of ethanol can be further minimized by injection in a non-uniform manner within a cylinder. The ethanol injection suppresses knock so that higher compression ratio and/or engine downsizing from increased turbocharging or supercharging can be used to increase the efficiency of the engine. | 10-21-2010 |
20100275878 | SPLIT-CYCLE ENGINE WITH DUAL SPRAY TARGETING FUEL INJECTION - An engine includes a rotatable crankshaft and an expansion piston slidably received within an expansion cylinder and operatively connected to the crankshaft. A crossover passage including walls connects a source of high pressure gas to the expansion cylinder. A crossover expansion (XovrE) valve is operable to control fluid communication between the crossover passage and the expansion cylinder. The XovrE valve includes a valve head and a valve stem extending from the valve head. A fuel injector operable to inject fuel into the crossover passage includes a plurality of spray holes disposed in a nozzle end and aimed at an at least one target at which fuel emitting from the spray holes is directed to form at least one spray pattern. The at least one target is located above a seated position of the XovrE valve head and between the walls of the crossover passage and the XovrE valve stem. | 11-04-2010 |
20100288227 | COMPRESSION IGNITION ENGINE AND METHOD FOR CONTROLLING SAME - An engine having improved combustion characteristics is provided. The engine includes a fuel injection system that is variable between two operational states. In the first operating state, the fuel injectors provide a fuel spray having first spray pattern characteristics. When the system detects that an operation characteristic exceeds a threshold, the fuel injectors are displaced into a second operating state. In the second operating state, the fuel injectors provide a spray pattern having first spray pattern characteristics. The combustion cycle may be characterized by timing the fuel injection so that the fuel is sprayed into the cylinder early in the compression stroke. Further still, the combustion cycle may be characterized by controlling the fuel pressure so that the fuel pressure is inversely related to the load on the engine. | 11-18-2010 |
20100294234 | FUEL INJECTION METHOD FOR DIESEL ENGINE AND DIESEL ENGINE - In a diesel engine | 11-25-2010 |
20100294235 | SYSTEM AND METHOD FOR COMPENSATION OF FUEL INJECTOR LIMITS - A method for an engine configured to deliver an actively varying relative ratio of a first and second fuel via a delivery system having a first and second injector for a cylinder of the engine, where the first fuel has a lesser relative amount of alcohol, the method comprising of varying an amount of injection from the first and second injector with operating conditions, when said variation causes said first injector to approach a first minimum opening condition, increasing injection of said second injector and disabling said first injector, and when said variation causes said second injector to approach a second minimum opening condition, avoiding further reduction of said second injector and decreasing injection of said first injector. | 11-25-2010 |
20100313846 | INTERNAL COMBUSTION ENGINE - In an internal combustion engine, on a cylinder head side, a tumble flow is formed that is directed from an intake vent opened on the cylinder head to an exhaust vent opened on the cylinder head. A direct injection valve injects fuel directly into a combustion space. The direct injection valve injects the fuel toward a section where a piston top surface intersects with a cylinder inner surface, at a point closer to an intake top dead center than a middle between the intake top dead center and an intake bottom dead center, and thereafter injects the fuel into the combustion space again. | 12-16-2010 |
20110005491 | FUEL INJECTION CONTROL APPARATUS OF INTERNAL COMBUSTION ENGINE - In one embodiment, a total pilot injection amount is calculated from the difference between a compressed gas temperature in a cylinder and a fuel self-ignition temperature. As pilot injection, a plurality of instances of divided pilot injection are performed, and by setting the injection amount per one instance of divided pilot injection to an injector minimum limit injection amount, each divided pilot injection amount is suppressed, and the penetration of fuel is suppressed to a low level so that attachment of fuel to a wall face is avoided, and also, fuel is caused to accumulate in the center portion of the cylinder. | 01-13-2011 |
20110067672 | FUEL MIXTURE COMBUSTION CONTROL METHOD FOR A SPARK-IGNITION INTERNAL-COMBUSTION ENGINE, NOTABLY A SUPERCHARGED ENGINE - The present invention relates to a method of controlling the combustion of a spark-ignition internal-combustion engine, in particular a supercharged engine, wherein the engine comprises at least one cylinder ( | 03-24-2011 |
20110088654 | MULTI-FUELLING AN ENGINE - A compression ignition engine is supplied with a first fuel in a flow of air and a second fuel is injected into the combustion chamber. The first fuel comprises a more volatile fuel than diesel such as ethanol, LPG or other combustible gas; the second fuel comprises diesel or biodiesel; and the second fuel is injected in multiple pulses in each ignition cycle with the first pulse acting as a pilot pulse to trigger ignition, and the timing of the second pulse being such as to modify the temperature through evaporation of the second fuel and thereby reduce the combustion temperature and mitigate knock susceptibility. Preferably the pilot pulse is followed by a single further pulse of the second fuel in the ignition cycle. The engine may be controlled to operate in two different modes, one mode for light and medium load conditions when there is only a pilot pulse injection of the second fuel which reduces NO | 04-21-2011 |
20110088655 | Fuel Injection Control Method For A Direct Injection Gaseous-Fuelled Internal Combustion Engine - The method comprises receiving from the vehicle controller, values associated with the engine speed and of another parameter indicative of the engine operating conditions, such as the total fuelling amount, and controlling the fuel injection parameters according to the engine state, which, for example, can include a normal operation mode, a filter regeneration mode, an engine protection mode, high or low transient load modes, and operating at different altitudes, through algorithms implemented in an electronic controller. | 04-21-2011 |
20110088656 | METHOD OF OPERATING A COMPRESSION IGNITION INTERNAL COMBUSTION ENGINE - A method of operating a combustion ignition engine comprises introducing an amount of a compressibly non-ignitable fuel into the air induction system of a compression ignition engine during the intake stroke of the engine and then injecting an amount of compressibly ignitable fuel (e.g., Diesel fuel) in the cylinder chamber at a crank angle sufficiently advanced during the compression stroke of the compression ignition engine such that the compressibly ignitable fuel and incompressible non-ignitable fuel ignite and combust such that substantially all of the fuel in the cylinder is combusted, where the amount of compressibly non-ignitable fuel introduced into the cylinder has an energy content that is at least about 50% to at most about 99% of the total energy content of the total amount of fuel introduced. | 04-21-2011 |
20110132320 | FLUID INJECTION PRESSURIZATION SYSTEM - A system including, an internal combustion engine including a combustion chamber, a first injector to provide a first injection fluid to the combustion chamber, and a heated pressurization system to heat the first injection fluid in a pressure vessel to achieve a sufficient injection pressure. | 06-09-2011 |
20110132321 | Fuel Injector Diagnostic for Dual Fuel Engine - Various systems and methods are described for controlling fuel injection of a dual fuel engine which includes first and second fuel rails and first and second fuel pumps. In one example, while pumping is suspended in the second fuel rail, the first fuel is injected to all but one cylinder of the engine and the second fuel is injected to the one cylinder in a predetermined sequence. As such, the fuel injector injecting to the one cylinder is isolated and its performance may be assessed without significantly affecting engine performance. | 06-09-2011 |
20110155097 | Control Apparatus for Direct Injection Type Internal Combustion Engine - A control apparatus for a direct injection type engine is provided for reducing an amount of fuel that adheres to and that remains on a crown surface of a piston so as to suppress the increase of Number of particles as well as advancing the first injection as much as possible when plural fuel injections are carried out in one cycle in the direct injection type engine. The first injection timing is set based on a pulse width of at least the first injection among each of injections split plural times, and when the pulse width of the split first injection is short, the injection timing of the first injection is more advanced as compared with a case of a longer pulse width of the split first injection. | 06-30-2011 |
20110162620 | METHOD AND SYSTEM FOR ENGINE CONTROL - Methods and systems are provided for controlling exhaust emissions by adjusting a fuel injection into an engine cylinder from a plurality of fuel injectors based on the fuel type of the injected fuel and further based on the soot load of the engine. Soot generated from direct fuel injection is reduced by decreasing an amount of direct injection into a cylinder as the engine soot load increases. | 07-07-2011 |
20110186007 | Method For Operating A Self-Compressing Aircraft Engine - Diesel engines are proposed as the drive unit for aircrafts that operate reliably and trouble-free even at great altitudes, wherein the combustion in the diesel engines at top dead center is moved up to an earlier point in time according to the flight altitude and the corresponding barometric pressure. In addition, the charge pressure may be set to a constant value, which is not dependent on the flight altitude, and furthermore, the quantity of fuel supplied may be adjusted to a minimum fuel quantity adjusted to the respective charge pressure. | 08-04-2011 |
20110197851 | METHOD FOR METERING A FUEL MASS USING A CONTROLLABLE FUEL INJECTOR - A method for controlling a direct-injection fuel injector for an internal combustion engine includes identifying linear and non-linear fuel mass delivery regions corresponding to predefined ranges of injection duration, monitoring an operator torque request, determining a total desired fuel mass associated with the operator torque request, identifying a fuel mass delivery region corresponding to the total desired fuel mass, and commanding a plurality of partial injection events having injection durations corresponding to the linear fuel mass delivery region to inject the total desired fuel mass when the total desired fuel mass corresponds to the non-linear fuel mass delivery region. | 08-18-2011 |
20110209685 | Engine Control Method and System - Methods and systems are provided for heating a catalyst during engine cold-start conditions. One example embodiment uses positive valve overlap to drive a boosted blow-through airflow through the cylinders of an engine. Fuel is injected with the blow-through airflow during the valve overlap, and also injected into engine cylinders outside the valve overlap. The catalyst is heated by the resulting exothermic reaction of the blow-through airflow with the combustion products and the injected fuel in the exhaust manifold. | 09-01-2011 |
20110220059 | TWO-CYCLE COMBUSTION ENGINE - The invention relates to a two-cycle combustion engine, comprising at least one cylinder ( | 09-15-2011 |
20110226214 | Control Unit for Direct Injection Engine - When a direct injection type internal combustion engine is in an operating state, a fuel is split and jetted into a cylinder of the internal combustion engine and split injections are performed in a manner to make a ratio of a piston travel and an injection pulse width of split injection constant in a cycle whereby a rich mixture is not locally generated and a mixture in a cylinder of the internal combustion engine is put in a condition near stoichiometry. Also, when the internal combustion engine is in cold condition, a fuel is split and jetted and split injections are performed so that the ratio of the piston travel and the injection pulse width of split injections monotonously increases in a cycle. | 09-22-2011 |
20110247586 | Directly Injected Internal Combustion Engine System - An engine system for a vehicle, comprising of a combustion chamber, a first in-cylinder direct injector configured to deliver a first substance including at least gasoline directly to the combustion chamber at a first pressure; and a second in-cylinder direct injector configured to deliver a second substance including at least an alcohol directly to the combustion chamber at a second pressure less than the first pressure. | 10-13-2011 |
20110265758 | Method and System for Pre-Ignition Control - Methods and systems are provided for addressing cylinder pre-ignition by adjusting a spray angle of fuel injected into a cylinder responsive to an indication of pre-ignition. A spray pattern of fuel injected in the cylinder is varied based on a cylinder pre-ignition count to reduce cylinder wall impingement of injected fuel while improving air-fuel mixing in the cylinder. | 11-03-2011 |
20110265759 | INTERNAL COMBUSTION ENGINE HAVING INDEPENDENT GAS SUPPLY WITH NO COMPRESSION STROKE - An internal combustion engine having an independent gas supply with no compression stroke is provided. The internal combustion engine includes a body, an input unit, an output unit, and an exhaust unit. The body has at least one combustion chamber. The input unit is connected to the combustion chamber, for inputting a high-pressure fuel in the combustion chamber and producing a predetermined pressure inside the combustion chamber. The output unit is connected to the combustion chamber, for outputting power generated by combustion of the high-pressure fuel. The exhaust unit is connected to the combustion chamber, for discharging an exhaust gas generated due to the combustion of the high-pressure fuel. The predetermined pressure is directly produced inside the combustion chamber by inputting the high-pressure fuel in the combustion chamber, and then a combustion stroke is performed. The internal combustion engine of the present invention does not need a complicated valve system but achieves desirable gas-intake efficiency. As each output only requires combustion and exhaust strokes, the operation of the engine is relatively smooth and the rotational speed of the engine may be largely increased. Moreover, as an independent gas supply is utilized, the limit of the conventional gas-intake efficiency (gas-intake time and pipeline valve configuration) is eliminated, so that a corresponding capacity needed inside the combustion chamber at the time of the combustion stroke may be controlled depending on the demand of an output amount of the power. | 11-03-2011 |
20110290211 | Low Leakage Cam Assisted Common Rail Fuel System, Fuel Injector, And Operating Method Therefor - A fuel system includes a plurality of fuel injectors each defining a nozzle supply passage, a nozzle outlet and a low pressure space. The fuel system includes a plurality of mechanically actuated pressure intensifiers each including a tappet and being positioned partially within one of the fuel injectors, and a common rail fluidly connecting with each of the fuel injectors. Each of the fuel injectors further includes an injection pressure control mechanism having an injection pressure control valve. Each injection pressure control valve blocks the corresponding pressure intensifier from the common rail and fluidly connects the pressure intensifier with the low pressure space at a first position, and fluidly connects the pressure intensifier with the common rail and blocks the pressure intensifier from the low pressure space at a second position. Injecting fuel via operating the fuel system may include operating the fuel system in a low leakage mode where the pressure intensifier displaces fuel at a low pressure, between high pressure injections. | 12-01-2011 |
20110297122 | Method of Operating an Engine Using an Ashless Consumable Lubricant - The present invention relates to methods of using a low sulfur, low phosphorus, low-ash, zinc free consumable lubricating composition in an internal combustion engine equipped with a pilot ignition system, where the composition comprises: an oil of lubricating viscosity; a high TBN succinimide dispersant and where the lubricant composition overall has a sulfated ash value of up to about 0.2, a phosphorus content of up to about 50 to about 800 ppm and a sulfur content of up to about 0.4 percent by weight. | 12-08-2011 |
20120000441 | DIESEL ENGINE FOR VEHICLE - A diesel engine for a vehicle comprises an engine body mounted in the vehicle having a plurality of cylinders that is supplied with fuel, a plurality of fuel injection valves for directly injecting the fuel into the cylinders, and an injection control module for controlling a mode of injecting the fuel into the cylinders through the fuel injection valves. The injection control module sets a fuel injection amount per cylinder at least according to a load on the engine body, performs a main injection, and performs at least one pre-injection where fuel is injected prior to the main injection. The injection control module further executes a cylinder-cutoff operation mode where the fuel supplies to the cylinder or the cylinders are stopped when the engine body is under a low load condition where the fuel injection amount per cylinder is below a predetermined amount. | 01-05-2012 |
20120024258 | CONTROL SYSTEM OF AN INTERNAL COMBUSTION ENGINE - The present invention has an object to obtain an accurate amount of intake air at the time of an operation of an EGR mechanism in a control system of an internal combustion engine which is provided with a first fuel injection valve for injecting fuel into a cylinder, a second fuel injection valve for injecting fuel into an intake port, and the EGR mechanism. In order to achieve this object, the present invention resides in a control system of an internal combustion engine which is provided with a first fuel injection valve that injects fuel into a cylinder of the internal combustion engine, a second fuel injection valve that injects fuel into an intake port of the internal combustion engine, an EGR passage that introduces an EGR gas from an exhaust passage of the internal combustion engine to an intake passage thereof, an EGR valve that is arranged in the EGR passage, and an obtaining means that obtains an amount of intake air in the internal combustion engine, wherein when the EGR valve is open, a determination is made based on a value of a cylinder injection ratio, as to whether the amount of intake air is in an increasing tendency or in a decreasing tendency with respect to a change in the cylinder injection ratio, and a value of the amount of intake air thus obtained is corrected according to a result of the determination. | 02-02-2012 |
20120060793 | System and Method for Controlling Fuel Injection - A system for controlling fuel injection which injects a fuel to an engine through main injection and/or pilot injection may include a detecting portion detecting a driving condition of the engine, a control portion calculating a change amount of the driving condition from the driving condition of the engine, and deciding actual fuel injection factors based on the driving condition of the engine and the change amount of the driving condition, a high pressure pump controlling a rail pressure according to the actual fuel injection factors, and an injector injecting the fuel according to the actual fuel injection factors. | 03-15-2012 |
20120067326 | INTERNAL COMBUSTION ENGINE WITH HIGH EFFICIENCY - An internal combustion engine that is structurally similar to a four-stroke engine. The engine comprises at least one cylinder unit, in turn, comprising a cylinder, a piston head that reciprocates within the cylinder, a combustion chamber defined between the cylinder and the front of the piston head, a fuel injector, an oxygen injector, and an exhaust port. The IC engine further comprises a piston rod, one end of which is connected to the piston head and the other end to the crankshaft. The combustion within the combustion chamber is initiated upon the injection of the fuel and the oxygen into the combustion chamber when the piston is at the top dead center. The spent gases are expelled through the exhaust port as the piston returns to the top dead center. | 03-22-2012 |
20120080007 | Fuel injector support constructions for direct injection opposed-piston engines - An opposed-piston internal combustion engine with one or more ported cylinders and uniflow scavenging includes fuel injectors supported at compound angles with respect to the cylinders in order to directly inject spray patterns of fuel in opposing directions through the side walls of the cylinders. | 04-05-2012 |
20120111302 | METHOD AND DEVICE FOR CONTROLLING SPARK-IGNITION DIRECT INJECTION ENGINE - A method for controlling an engine includes, when the engine is operating within a particular range with comparatively low engine speed and high load, setting an effective compression ratio of 10:1 or above, retarding ignition timing by a predetermined amount and retarding the ignition timing within a first, relatively low engine speed range more than within a second, higher engine speed range, setting an injection mode of an injection valve to divided injections performed at least twice in a period from an intake stroke to an earlier-half stage of a compression stroke, performing, within the first engine speed range, a final injection in the earlier-half stage of the compression stroke, and performing, within the second engine speed range, the final injection in a late stage of the intake stroke and at least one injection other than the final injection in a middle stage of the intake stroke. | 05-10-2012 |
20120138015 | FUEL MANAGEMENT SYSTEM FOR VARIABLE ETHANOL OCTANE ENHANCEMENT OF GASOLINE ENGINES - Fuel management system for efficient operation of a spark ignition gasoline engine. Injectors inject an anti-knock agent such as ethanol directly into a cylinder of the engine. A fuel management microprocessor system controls injection of the anti-knock agent so as to control knock and minimize that amount of the anti-knock agent that is used in a drive cycle. It is preferred that the anti-knock agent is ethanol. The use of ethanol can be further minimized by injection in a non-uniform manner within a cylinder. The ethanol injection suppresses knock so that higher compression ratio and/or engine downsizing from increased turbocharging or supercharging can be used to increase the efficiency of the engine. | 06-07-2012 |
20120145122 | SYSTEM AND METHOD FOR COMPENSATING CETANE - Methods and systems for adjusting a plurality of fuel injections supplied to a cylinder during a cycle of the cylinder are described. In one example, fuel amounts are moved between fuel injections in response to combustion phase. Engine feedgas hydrocarbons and/or carbonaceous particulate matter may be reduced when cetane of combusted fuel changes. | 06-14-2012 |
20120152203 | Method and control unit for operating an injector of an internal combustion engine - In a method for operating an injector of an internal combustion engine of a motor vehicle, in which an actuator for driving a component of the injector is provided, the actuator is controlled in such a way that at least two partial injections are brought about within a working cycle of the internal combustion engine. For each partial injection, a starting point in time of the partial injection is ascertained. | 06-21-2012 |
20120174891 | BI-FUEL ENGINE INCLUDING SYSTEM AND METHOD FOR REDUCING COMPONENT TEMPERATURE - A method may include injecting gasoline into a combustion chamber of an internal combustion engine from a direct injection gasoline fuel injector during a gasoline fuel mode of the engine. The method may also include combusting the gasoline in the combustion chamber to power the engine during the gasoline fuel mode. Further, the method may include injecting gaseous fuel from a gaseous fuel injection system into the combustion chamber during a gaseous fuel mode of the engine and combusting the gaseous fuel in the combustion chamber to power the engine during the gaseous fuel mode. The method may further include cooling the direct injection gasoline fuel injector during the gaseous fuel mode by injecting gasoline into the combustion chamber. | 07-12-2012 |
20120192831 | Combustion Chamber for a Side-Mounted Direction Injector - In an opposed-piston, opposed-cylinder engine, a high degree of swirl is developed during the scavenging process and persists into the combustion stroke. The engine has one or more injectors at the periphery of the combustion chamber injecting fuel into the air at the point in which the air has the highest tangential velocity. The swirling air causes the jets to be pushed together and some of the jets to be pushed into the cylinder wall. According to an embodiment of the disclosure, the exhaust piston has a raised portion and a recessed portion. Protuberances extending inwardly are provided on the raised portion of the exhaust piston to dampen the swirl. | 08-02-2012 |
20120216773 | INJECTION OF GASEOUS FUELS - A gaseous fuel injection system ( | 08-30-2012 |
20120247421 | ENGINE COMBUSTION CONTROL AT LOW LOADS VIA FUEL REACTIVITY STRATIFICATION - A compression ignition (diesel) engine uses two or more fuel charges during a combustion cycle, with the fuel charges having two or more reactivities (e.g., different cetane numbers), in order to control the timing and duration of combustion. By appropriately choosing the reactivities of the charges, their relative amounts, and their timing, combustion can be tailored to achieve optimal power output (and thus fuel efficiency), at controlled temperatures (and thus controlled NOx), and with controlled equivalence ratios (and thus controlled soot). At low load and no load (idling) conditions, the aforementioned results are attained by restricting airflow to the combustion chamber during the intake stroke (as by throttling the incoming air at or prior to the combustion chamber's intake port) so that the cylinder air pressure is below ambient pressure at the start of the compression stroke. | 10-04-2012 |
20120247422 | CONTROL DEVICE AND CONTROL METHOD FOR INTERNAL COMBUSTION ENGINE - A control device for an internal combustion engine in which a direct injector that directly injects fuel into a corresponding one of a plurality of cylinders and a port injector that injects fuel into an intake port are both provided on each of the plurality of cylinders includes: a control unit that controls a fuel injection amount from the direct injectors and the port injectors; and an imbalance detecting unit that, in a state where fuel is injected from both of the direct injectors and the port injectors, detects an imbalance in air-fuel ratio among the plurality of cylinders. When the imbalance in air-fuel ratio is detected by the imbalance detecting unit, the control unit controls the fuel injection amount from the direct injectors and the port injectors such that fuel is injected from one of the direct injectors and the port injectors. | 10-04-2012 |
20120255517 | HCCI FUEL INJECTORS FOR ROBUST AUTO-IGNITION AND FLAME PROPAGATION - A direct injection engine includes a fuel injector receiving a flow of pressurized fuel. The fuel injector provides fuel injections directly into a combustion chamber of the engine. The fuel injector includes a first fuel injector nozzle opening directing with a first narrow injection angle a first portion of a fuel injection mass at a spark gap of a spark plug. The fuel injector further includes a second fuel injector nozzle opening dispersing with a second wider injection angle a second portion of the fuel injection mass within the combustion chamber. | 10-11-2012 |
20120255518 | Carbon Oxygen Hydrogen Motor - A carbon oxygen hydrogen motor comprises an enclosure, a combustion chamber, and a plurality of injectors. A rotational crank is positioned within the enclosure and connected with a piston. The piston is positioned within the combustion chamber and connected to the rotational crank by a rod. A stream of hydrogen gas, oxygen gas, and carbon dioxide gas enter into the combustion chamber through the plurality of injectors. A spark plug, which is connected to the combustion chamber, ignites hydrogen gas, oxygen gas, and carbon dioxide gas inside the combustion chamber causing a reaction. The reaction moves the piston upward. After the reaction has taken place, the piston moves downward. The downward motion of the piston ejects all of the byproducts from the reaction through a ejecting valve located in the combustion chamber. Since the piston is connected with the rotational crank, the rotational crank rotates in cycles creating mechanical energy. | 10-11-2012 |
20120272935 | METHOD OF OPERATING A DUAL FUEL COMBUSTION ENGINE OF THE DIESEL- TYPE AND A DUAL FUEL COMBUSTION ENGINE OF THE DIESEL-TYPE OPERABLE ACCORDING TO SUCH METHOD - A method of operating a dual fuel internal combustion engine of the diesel-type is provided, the engine including a combustion chamber being at least partly delimited by a piston, a first fuel supply for a first fuel, the first fuel supply being located in or at the combustion chamber and/or in or at an inlet port thereof, and a second fuel supply for a second fuel. The method includes pre-mixing the first fuel in the combustion chamber and/or in the inlet port, compressing the charge containing the first fuel to conditions that allow auto-ignition of the second fuel, performing a first injection of the second fuel into the combustion chamber to initiate auto-ignition of the second fuel for igniting the first fuel, thereby initiating conditions for pre-mixed flame propagation combustion of the first fuel. The method further includes performing at least one subsequent injection, the subsequent injection supplying additional kinetic energy into the combustion process to thereby enhance turbulence intensity and propagation speed of the flame and/or enhance late mixing in the combustion chamber, so a to improve late oxidation during combustion. The invention also relates to a dual fuel combustion engine of the diesel engine type. | 11-01-2012 |
20120285417 | Dual Fuel Injector And Engine Using Same - A dual fuel injector may be used to injector both gas and liquid fuel into a cylinder of a compression ignition engine. An injector body defines a first set of nozzle outlets, a second set of nozzle outlets, a first fuel inlet and a second fuel inlet. A dual solenoid actuator includes a first armature, a first coil, a second armature and a second coil that share a common centerline. The dual solenoid actuator has a non-injection configuration at which the first armature is at an un-energized position and the second armature is at an un-energized position. The dual solenoid actuator has a first fuel injection configuration at which the first fuel inlet is fluidly connected to the first set of nozzle outlets, the first armature is at an energized position and the second armature is at the un-energized position. The dual solenoid actuator has a second fuel injection configuration at which the second fuel inlet is fluidly connected to the second set of nozzle outlets, the first armature is at the un-energized position and the second armature is at an energized position. The dual solenoid actuator may also include a combined fuel injection configuration. | 11-15-2012 |
20120291748 | FUEL INJECTION SYSTEM - A fuel injector is provided in a cylinder block of a spark-ignition direct injection engine. The fuel injector is arranged in such a manner that a fuel injection port is closed by a piston of the engine when the piston is positioned at a top dead center. The fuel injection port is opened when the piston is positioned at a specified position which is far from the top dead center by a specified distance. | 11-22-2012 |
20120298071 | COMBUSTION SYSTEM FOR INTERNAL COMBUSTION ENGINE - A combustion system of an internal combustion engine has a fuel injector injecting a fuel directly into a combustion chamber and a water injector injecting a water (non-combustible fluid) into the combustion chamber. The water collides with a fuel spray which the fuel injector injects. A penetrating force of the fuel spray is decreased and the fuel spray hardly reaches a cylinder wall surface. The injected fuel is combusted at a position away from the cylinder wall surface, so that the combustion heat transferred to the cylinder wall surface is reduced and the heat loss of the combustion can be decreased. | 11-29-2012 |
20120325180 | Dual Fuel Injection Compression Ignition Engine And Method Of Operating Same - A method of operating an electronically controlled dual fuel compression ignition engine includes injecting a pilot ignition quantity of liquid fuel into an engine cylinder from a dual fuel injector in an engine cycle during an auto ignition condition. An amount of gaseous fuel is also injected into the engine cylinder from the dual fuel injector in the same engine cycle. The amount of gaseous fuel is divided between a pre-mix quantity of gaseous fuel, which may be injected about 90° before top dead center, and a post ignition quantity of gaseous fuel that may be injected after top dead center, with both quantities being greater than zero. An engine controller may change a ratio of the pre-mix quantity of gaseous fuel to the post ignition quantity of gaseous fuel responsive to changing from a first engine speed and load to a second engine speed and load. The pilot ignition quantity of liquid fuel is compression ignited, which in turn causes the gaseous fuel to be ignited. A pre-mix quantity of liquid fuel may also be included in order to speed the combustion process at higher engine speeds. | 12-27-2012 |
20130036999 | High-Squish Combustion Chamber With Side Injection - A combustion chamber for an internal combustion engine is disclosed in which the piston has a large squish region at a peripheral location on the piston top and a depression in the center of the piston top. A side injector sprays fuel into the depression in the piston top through a channel defined in the squish region. In some embodiments, two injectors are provided that are diametrically opposed to each other. In some embodiments, the engine is an opposed-piston engine in which each piston has the squish regions and depressions in the piston top. | 02-14-2013 |
20130081592 | COMBUSTION CONTROL FOR INTERNAL COMBUSTION ENGINES THROUGH FUEL TEMPERATURE AND PRESSURE - Embodiments of the invention are directed toward a fuel injection system for a variable temperature and pressure direct injection engine, comprising: a high-pressure fuel pump capable of providing fuel at a pressure between 100 bar and 800 bar; a fuel heater for heating the fuel from 50° C. to 500° C.; and a common fuel rail operatively connected to at least one direct injector for injecting heated fuel into a cylinder of the engine. | 04-04-2013 |
20130118448 | Dual Fuel Common Rail System And Fuel Injector - A dual fuel system includes a plurality of fuel injectors that each have a non-injection configuration, a liquid fuel injection configuration, a gaseous fuel injection configuration and a combined fuel injection configuration. Each of the fuel injectors includes a liquid control valve member with a guide segment that defines a portion of a leak path from the a liquid fuel inlet to a drain outlet, and a gas control valve member with a guide segment that defines a second leak path from the liquid fuel inlet to the drain outlet. Each injector body includes a tip component that defines both a liquid nozzle outlet set and a gas nozzle outlet set. A dual solenoid actuator has a first armature coupled to the liquid control valve member, a second armature coupled to the gas control valve member, and a shared stator. | 05-16-2013 |
20130133615 | INTERNAL-COMBUSTION ENGINE - An internal-combustion engine includes a cylinder, a piston, a spark plug, and a fuel injection valve. The piston includes a top surface and a cavity provided in the top surface. The cavity includes a bottom surface, a vertical wall, a first sidewall, and a second sidewall. The fuel injection valve includes a plurality of injection ports from which a plurality of fuel mists are to be obliquely injected toward the top surface of the piston in respectively different directions at a predetermined crank angle in a compression stroke. The cavity extends from a position close to a center of the piston toward the fuel injection valve when viewed from above the top surface of the piston. The first and second sidewalls extend toward the fuel injection valve when viewed from above the top surface of the piston. | 05-30-2013 |
20130146021 | Toroidal Combustion Chamber With Side Injection - A toroidal combustion chamber shape with side injectors is being developed for an opposed-piston engine. Favorable combustion characteristics of such configuration are transferred to a conventional engine, i.e., one with a combustion chamber delimited by a piston, a cylinder wall, and a cylinder head. At least one injector is disposed in the cylinder head at the periphery. The fuel is injected substantially along the plane of interface between the cylinder head and the cylinder block. The intake system is configured to provide a swirling flow in the combustion chamber. The fuel is injected in an angle that is displaced from the central axis of the cylinder and directed along the swirl. In some embodiments, a substantially torus-shaped volume is formed between the piston and the cylinder head when the piston is at top center. The injector or injectors spray fuel into the toroidally-shaped volume substantially tangent to the torus. | 06-13-2013 |
20130312702 | Shutdown Pressure Relief Valve For Common Rail Fuel System - A passive hydraulically actuated non-electric shutdown pressure relief valve relieves pressure in the high pressure volume of a low static leak common rail fuel system after shutdown. When the common rail fuel system is in operation, a transfer pump provides medium pressure to hold the shutdown pressure relief valve closed. At shutdown, the residual medium pressure downstream from the transfer pump decays back to tank, and the residual high pressure trapped in the common rail and fuel injectors pushes open the shutdown pressure relief valve to release the high pressure after back to tank. | 11-28-2013 |
20140026849 | INTERNAL COMBUSTION ENGINE - In an internal combustion engine | 01-30-2014 |
20140116375 | DUAL FUEL ENGINE AND STRATEGY TO AVOID ATMOSPHERIC VENTING - A compression ignition dual fuel engine supplies natural gas fuel and liquid diesel fuel to each engine cylinder from a common fuel injector. Each fuel injector is fluidly connected to both a liquid fuel common rail and a gaseous fuel common rail. The engine includes a surplus gas system for capturing surplus gas, such as evaporated gas from the gaseous fuel supply and pressure control system, or left over pressurized natural gas produced by engine shut down. Rather than being vented to atmosphere, the surplus gas can be burned in the engine when operating conditions present burn opportunities. | 05-01-2014 |
20140123936 | Debris Robust Fuel Injector With Co-Axial Control Valve Members And Fuel System Using Same - A dual fuel injector utilizes first and second control valves to open and close first and second nozzle outlet sets to inject a first fuel and a second fuel, respectively. The first and second control valves have concentric lines of action, and include a self alignment feature with respect to a flat seat. The two fuels may differ in at least one of chemical identity, matter phase and pressure. | 05-08-2014 |
20140123937 | Dual Fuel Injection Valve - A dual fuel injection valve with concentric needles comprises an inner needle and an outer needle surrounding the inner needle, both needles being located inside the injection valve body. The valve is provided with a first set and a second set of orifices for separately injecting two different fuels directly into the combustion chamber of an internal combustion engine. The outer needle is fixed against rotation with respect to the injection valve body such that an interlace angle between the centerlines of the first series of orifices and second series of orifices is set at different predetermined angles to reduce methane emissions. | 05-08-2014 |
20140158088 | Temperature-Controlled Exhaust Gas Recirculation System and Method for Dual Fuel Engine - Systems and methods for operating an engine include controlling a temperature of recirculated exhaust gas to achieve a predetermined recirculated exhaust gas temperature. A mixture of air and temperature-controlled recirculated exhaust gas are admitted in a combustion chamber and a gaseous fuel injector delivers gaseous fuel during an intake stroke. A diesel fuel injector is activated for a first time to deliver a pre-pilot diesel quantity directly into the combustion chamber at an early stage of a compression stroke, and is activated again for a second time to deliver a pilot diesel quantity directly into the combustion chamber at a later stage of the compression stroke. A total air/fuel ratio within the combustion chamber upon completion of the second diesel fuel injector activation is lean. The air/fuel mixture is combusted during a combustion stroke, and combustion products are removed during an exhaust stroke. | 06-12-2014 |
20140196686 | GASEOUS COMMON RAIL FUEL SYSTEM AND HIGH COMPRESSION RATIO ENGINE USING SAME - A gaseous fuel engine combines the efficiencies associated with high compression ratio engines with the attractiveness of fueling with natural gas. Each engine cylinder has an associated fuel injector positioned for direct injection and supplied with gaseous fuel from a high pressure common rail. A separate ignition prechamber is also supplied with natural gas and includes an ignition device. Hot gas generated by igniting a mixture of gaseous fuel and air in the prechamber are used to ignite a much larger charge of gaseous fuel injected into the engine cylinder from the fuel injector. The engine has a compression ratio greater than 14: to 1. | 07-17-2014 |
20140196687 | In-Cylinder Dynamic Gas Blending Fuel Injector And Dual Fuel Engine - A dual fuel engine utilizes a compression ignited pilot injection of liquid diesel fuel to ignite a mixture of gaseous fuel and air in each engine cylinder. The gaseous fuel is injected at a relatively low pressure directly into the engine cylinder from a fuel injector. The liquid diesel fuel is injected directly into the engine cylinder from the same fuel injector. In-cylinder dynamic gas blending during the compression stroke can reduce potential hydrocarbon slip that could occur when unburned fuel resides in crevice volumes within the engine cylinder. | 07-17-2014 |
20140216397 | DIESEL ENGINE - An injector of a diesel engine has a first injection valve and a second injection valve disposed to face each other with respect to the center of a combustion chamber. Assuming that a straight line passing through the first injection valve and the second injection valve is a symmetrical line, one of two regions obtained by dividing a planar region of a combustion chamber ( | 08-07-2014 |
20140238340 | Apparatus And Method For Fuelling A Flexible-Fuel Internal Combustion Engine - A flexible-fuel internal combustion engine apparatus comprises a combustion chamber, an intake valve, a first fuel injector, a second fuel injector, and a computer. The intake valve is operable to admit an intake charge into the combustion chamber. The first fuel injector injects a gaseous fuel directly into the combustion chamber. The second fuel injector injects a liquid fuel into the intake charge upstream of the intake valve. The computer is operatively connected with the first fuel injector and the second fuel injector to actuate injection of fuel respectively therefrom. The computer is programmed to command a gaseous-to-liquid fuel ratio as a function of at least one operating parameter from a group comprising gaseous fuel pressure, gaseous fuel mass, engine speed, engine torque, inlet air temperature, inlet air humidity, knock detection, operating history, torque command, and emissions. | 08-28-2014 |
20140261304 | HIGH PRESSURE DIRECT INJECTED GASEOUS FUEL SYSTEM AND RETROFIT KIT INCORPORATING THE SAME - A high-pressure direct injected gaseous fuel system comprising a fuel tank capable of storing fuel at a first pressure and a compressor including an inlet capable of receiving the fuel, and operative to supply, at an outlet, compressed fuel at a second pressure higher than the first. The system also includes an accumulator connected to the outlet and a plurality of injectors connected to the accumulator. The injectors are adapted to inject fuel directly into a combustion chamber. The system includes a pressure relief valve interconnecting the fuel tank and the outlet, wherein the pressure relief valve is operative to allow fuel flow between the fuel tank and outlet if the second pressure exceeds a threshold pressure. | 09-18-2014 |
20140261305 | METHOD AND DEVICE FOR OPERATING AN INTERNAL COMBUSTION ENGINE - In a method for operating an internal combustion engine during a catalytic converter heating phase, fuel in at least two portions is injected directly into at least one combustion chamber, a first portion of the fuel being injected during an intake stroke and an injection of a second portion of the fuel taking place directly before an ignition. The second portion is continuously reduced until a freely selectable boundary value of a torque fluctuation has been reached. | 09-18-2014 |
20140360461 | DEDICATED EGR CYLINDER POST COMBUSTION INJECTION - Systems and methods for increasing an amount of fuel injected into a dedicated exhaust gas recirculation (EGR) cylinder in an engine are disclosed. In one example approach, a method comprises, prior to combustion, injecting a first amount of fuel to a dedicated EGR cylinder, and after combustion and during an expansion and/or exhaust stroke, directly injecting a second amount of fuel to the dedicated EGR cylinder. | 12-11-2014 |
20150013638 | DUAL-FUEL DIESEL ENGINE AND OPERATION METHOD OF THE SAME - When shifting to the single combustion mode, an electromagnetic opening-and-closing valve V | 01-15-2015 |
20150027403 | METHOD AND DEVICE FOR CONTROLLING AN INTERNAL COMBUSTION ENGINE - A method for starting an internal combustion engine in which fuel is injected directly into the combustion chamber using a multiple injection before an initial ignition of a fuel/air mixture, the fuel being injected directly into the combustion chamber during an intake stroke using a first injection and using a second multiple injection, the fuel being injected directly into the combustion chamber during a compression stroke. | 01-29-2015 |
20150040858 | FUEL SYSTEM FOR AN INTERNAL COMBUSTION ENGINE - An improved fuel system for an internal combustion engine is disclosed. The fuel system includes an engine having at least one cylinder, comprising: a liquid fuel injector configured to inject liquid fuel into the at least one cylinder; and a gaseous fuel injector having a nozzle configured to inject gaseous fuel into at least one cylinder, wherein the gaseous fuel injector is positioned outside an airbox associated with at least one cylinder. | 02-12-2015 |
20150059686 | ENGINE CONTROL FOR A LIQUID PETROLEUM GAS FUELED ENGINE - A method for an engine, comprising: during a first condition comprising a high engine temperature, injecting a first quantity of liquid petroleum gas into a first engine cylinder at a first timing during an intake stroke; and injecting a second quantity of liquid petroleum gas into the first engine cylinder at a second timing during a compression stroke following the intake stroke. In this way, combustion knock and cylinder pre-ignition may be mitigated without retarding spark ignition and/or limiting engine load, thereby allowing for maximum engine performance. | 03-05-2015 |
20150075487 | SYSTEMS AND METHODS FOR CONTROLLING IGNITION ENERGY DURING EXHAUST STROKE COMBUSTION OF GASEOUS FUEL TO REDUCE TURBO LAG - Methods and systems are provided for adjusting ignition energy of the spark required for combustion of gaseous fuel injected during an exhaust stroke of a cylinder combustion event to reduce turbo lag. In one example, a method includes combusting a first amount of gaseous fuel during a compression stroke of a cylinder combustion event using a first ignition energy and combusting a second amount of gaseous fuel during an exhaust stroke of the cylinder combustion event using a second ignition energy, the second ignition energy lower than the first ignition energy. The second ignition energy may be adjusted based on in-cylinder pressure and cylinder load. | 03-19-2015 |
20150075488 | Method And System For Controlling Fuel Pressure In A Gaseous Fuelled Internal Combustion Engine - A method for controlling fuel pressure in an internal combustion engine consuming a gaseous fuel and a liquid fuel comprises steps of determining a gaseous fuel pressure target value as a function of an engine operating condition, pressurizing the liquid fuel to a liquid fuel pressure based on the gaseous fuel pressure target value, and regulating gaseous fuel pressure from the liquid fuel pressure. The gaseous fuel pressure equals the gaseous fuel pressure target value to within a predetermined range of tolerance. A corresponding system controls fuel pressure in a gaseous fuelled internal combustion engine. | 03-19-2015 |
20150083075 | SYSTEM AND METHOD FOR COMPENSATING CETANE - Methods and systems for adjusting a plurality of fuel injections supplied to a cylinder during a cycle of the cylinder are described. In one example, fuel amounts are moved between fuel injections in response to combustion phase. Engine feedgas hydrocarbons and/or carbonaceous particulate matter may be reduced when cetane of combusted fuel changes. | 03-26-2015 |
20150090217 | FUEL INJECTION CONTROL APPARATUS AND COMPRESSION IGNITION TYPE INTERNAL COMBUSTION ENGINE - A fuel injection control apparatus of a compression ignition type internal combustion engine includes a controller adapted to control an injector so that pre-stage injection and post-stage injection are performed as fuel injection during one cycle. The controller controls an interval between the timing of the pre-stage injection and the timing of the post-stage injection so that an interval Δt1 between the timing of the pre-stage peak and the timing of the post-stage peak approximately satisfies a condition. The condition is that the interval Δt1 is 0.5 times an inverse number of the frequency f0 at which a combustion noise level becomes the maximum. | 04-02-2015 |
20150101565 | Internal Combustion Engine with a First and a Second Injecter - An internal combustion engine includes a first injector and a second injector for injecting fuel directly into a combustion chamber in a cylinder in a crank case of the internal combustion engine. The combustion chamber is delimited at one side by a piston which is arranged in the cylinder so as to carry out a stroke and at the other side by a cylinder head. At least one gas exchange inlet valve and a gas exchange outlet valve are provided in the cylinder head for a charge exchange. The first injector is largely oriented in the direction of a cylinder axis, and the second injector is oriented at an angle to the cylinder axis. Maximally 80% of a full-load fuel quantity required by the internal combustion engine for a full load can be introduced into the cylinder using the first injector and maximally 50% using the second injector. The injectors can be configured for smaller fuel flow rates using the internal combustion engine design and operating method, whereby the precision of the injection is improved. | 04-16-2015 |
20150128900 | PILE HAMMER - A pile hammer includes a cylinder, a piston displaceably guided in the cylinder, and a striker displaceably guided in the cylinder. The striker is disposed underneath the piston in the operating position of the pile hammer. A combustion chamber is delimited axially by a face surface of the striker that lies in the interior of the cylinder and by a face surface of the piston. Using at least one fuel feed device a predetermined amount of fuel can be introduced into the combustion chamber during each working cycle. A primary fuel feed device is provided, which includes a primary fuel nozzle connected with a primary fuel tank having a fuel with great anti-knock properties. The primary fuel nozzle is structured as a high-pressure injection nozzle. An ignition oil feed device is also provided, which includes an ignition oil nozzle connected with an ignition oil tank having an ignition oil. The ignition oil nozzle is structured as a low-pressure injection nozzle. A method operates such a pile hammer. | 05-14-2015 |
20150128901 | Open-Valve Port Fuel Injection Of Alcohol In Multiple Injector Engines - An engine having two or more fuel injectors is disclosed, where at least one of the injectors is used to port fuel inject fuel into the cylinder when the air intake valve is open. The open valve port fuel injector is used to inject a fuel that has alcohol as a constituent and is the same fuel injected by another fuel injector. In other embodiments, the open valve fuel injector is used to inject an anti-knock fuel containing alcohol while a primary fuel, is introduced by another injector. The operation of the open valve fuel injector can be optimized to maximize the vaporization cooling. In other embodiments, the open valve fuel injector may be used in conjunction with direct injection of the primary fuel or the anti-knock fuel. Heavy EGR can be optimally used with the various embodiments. | 05-14-2015 |
20150136072 | Dual Fuel Injector and Engine Using Same - A dual fuel injector may be used to inject both gas and liquid fuel into a cylinder of a compression ignition engine. An injector body defines a first set of nozzle outlets, a second set of nozzle outlets, a first fuel inlet and a second fuel inlet. A dual solenoid actuator includes a first armature, a first coil, a second armature and a second coil that share a common centerline. The dual solenoid actuator has a non-injection configuration at which the first armature is at an un-energized position and the second armature is at an un-energized position. The dual solenoid actuator has a first fuel injection configuration at which the first fuel inlet is fluidly connected to the first set of nozzle outlets, the first armature is at an energized position and the second armature is at the un-energized position. | 05-21-2015 |
20150144095 | GASOLINE DIRECT-INJECTION ENGINE - A gasoline direct-injection engine is provided. The engine causes a self-ignition of a fuel injected into a cylinder by an injector and at least containing gasoline. The engine includes a controller for controlling the fuel injection by the injector. A geometric compression ratio of the engine is 15:1 or higher. The controller causes the injector to perform a pre-injection for keeping a variation of an in-cylinder temperature after a compression top dead center within a predetermined temperature range by injecting an amount of the fuel that causes an oxidative reaction without resulting in a hot flame reaction. The controller causes the injector to perform a main injection for causing self-ignition combustion of the fuel after the compression top dead center while the variation of the in-cylinder temperature is kept within the predetermined temperature range, by injecting the fuel after the pre-injection. | 05-28-2015 |
20150292431 | METHOD FOR COMPENSATING POST-INJECTION TIMING - A method for compensating post-injection timing may include performing main injection to perform combustion using air drawn into a cylinder, performing post-injection after the main injection to control an amount of reducing agent or to change a temperature of exhaust gas, determining first injection timing of the post-injection according to operation conditions of an engine, advancing or retarding the first injection timing according to combustion efficiency of the post-injection, and performing the post-injection at a compensated first injection timing. | 10-15-2015 |
20150300241 | Opposed Piston Engine - An opposed piston engine includes approximately spherical combustion chamber formed by the two opposed pistons in a single cylinder and an intake manifold including gas hooks. The combustion chamber has a small cone shaped extension on each side leading to each of two opposed injectors located in the cylinder wall where the two pistons meet at the top of their stroke. The combustion chamber configuration reduces the surface area of the chamber and increases the burn length by a significant amount compared to known designs. The gas hooks in the intake manifold restrict the flow of exhaust gases into the intake manifold long enough for the pressure in the cylinder to blow down and the exhaust gasses to attain high velocity passing out through the exhaust manifold, allowing the intake ports to be uncovered before the exhaust ports. | 10-22-2015 |
20150308366 | Air-Fuel Ratio Control in a Multi-Fuel Internal Combustion Engine - A technique for controlling air-fuel ratio in an internal combustion engine consuming more than one fuel type includes determining a target air-fuel ratio as a function of engine operating conditions; determining an actual air-fuel ratio from the engine operating conditions; determining a first fuel quantity of a first fuel to introduce into a combustion chamber as a function of the engine operating conditions; determining a second fuel quantity of a second fuel such that the actual air-fuel ratio equals the target air-fuel ratio to within a predetermined range of tolerance when the first fuel quantity and the second fuel quantity are introduced into the combustion chamber, the second fuel quantity being determined as a function of the engine operating conditions, the target air-fuel ratio, the actual air-fuel ratio and the first fuel quantity; and introducing the first fuel quantity and the second fuel quantity into the combustion chamber. | 10-29-2015 |
20150345419 | METHOD AND SYSTEM FOR PRE-IGNITION CONTROL - Methods and systems are provided for enriching an engine cylinder in response to an indication of pre-ignition. The cylinder is enriched by initially increasing a proportion of fuel delivered to the cylinder via a port injector on an open intake valve event. The cylinder is then continued to be enriched by increasing a proportion of fuel delivered to the cylinder via a direct injector. | 12-03-2015 |
20150377184 | Integrated Gas Nozzle Check Valve And Engine Using Same - A gas supply nozzle assembly for port injection of gaseous fuel into a cylinder of an engine includes a main body with a funnel shape that has a large area inlet for attachment to a metering valve and a small end. A centerline of the main body curves through an angle greater than zero. An end nozzle that defines a gas passage extending between an inlet and a discharge end. A check valve is clamped between the small end of the main body and the inlet end of the end nozzle, and is biased closed to block flow from the end nozzle into the main body, the opening responsive to a pressure differential to permit flow from the main body into the end nozzle. | 12-31-2015 |
20150377206 | INTERNAL COMBUSTION ENGINE AND METHOD OF IGNITING A FUEL - A method of igniting a fuel within a combustion chamber defined by a cylinder block of an internal combustion engine includes injecting a first portion of a fuel into the combustion chamber, and energizing a first plasma igniter. The first plasma igniter is configured for generating a first plurality of free radicals, extends through a cylinder head mated to the cylinder block, and protrudes into an intake port defined by the cylinder head that is disposable in fluid communication with the combustion chamber. After injecting the first portion, the method includes activating a second igniter configured for initiating a flame within the combustion chamber to thereby ignite the fuel. The second igniter extends through the cylinder head and protrudes into the combustion chamber. An internal combustion engine is also disclosed. | 12-31-2015 |
20160053694 | ENGINE SYSTEM OF DUEL INJECTOR - An engine system of a dual injector includes a first injector directly injecting a first fuel into a combustion chamber. A second injector directly injects a second fuel into the combustion chamber. A first fuel tank is connected to the first injector and stores the first fuel therein. A second fuel tank is connected to the second injector and stores the second fuel therein. The first fuel is in a liquid state and the second fuel is in a gas state at room temperature of atmospheric pressure. | 02-25-2016 |
20160061169 | A FUEL INJECTION UNIT AND FUEL FEEDING ARRANGEMENT - A fuel injection unit for assembly to a cylinder head and for injecting first and second fuel to a cylinder of an internal combustion piston engine includes a first fuel feeding section, a second fuel feeding section, a pressure accumulator in the first fuel feeding section, and a flow fuse arranged in the first fuel feeding section between the pressure accumulator and a fuel injection valve of the first fuel feeding section. The fuel injection valve includes a fuel handling section and control section, and the control section is a hydraulic control section fluidly separated from the fuel handling section. | 03-03-2016 |
20160069292 | INTERNAL COMBUSTION ENGINE - An electronic control unit provided in an internal combustion engine detects a degree of inter-cylinder variation of the amount of fuel that is injected from a port injector, and a degree of inter-cylinder variation of the amount of fuel that is injected from an in-cylinder injector. In a case where the inter-cylinder variation of one of the port injector and the in-cylinder injector is equal to or greater than a predefined value, a process is executed of limiting, so as not to exceed an upper limit value, an injection proportion of the injector for which the inter-cylinder variation is equal to or greater than the predefined value. This upper limit value is set to be smaller as the degree of inter-cylinder variation of the injector, for which the inter-cylinder variation is equal to or greater than a predefined value, increases. | 03-10-2016 |
20160076472 | START CONTROL DEVICE OF HOMOGENEOUS-CHARGE COMPRESSION IGNITION ENGINE - When a predetermined restart condition is satisfied after an engine is automatically stopped, whether or not a piston of a stopped-in-compression-stroke cylinder which is in a compression stroke falls within a specific range set at a bottom dead center side of a predetermined upper limit position is determined. When the piston of the stopped-in-compression-stroke cylinder falls within the specific range, a first compression start is executed in which fuel is injected from an injector into the stopped-in-compression-stroke cylinder for the first time and is then self-ignited. In the first compression start, a start timing of a first fuel injection operation with respect to the stopped-in-compression-stroke cylinder is set to be earlier as a stop position of the piston of the cylinder gets closer to the bottom dead center within the specific range. | 03-17-2016 |
20160084189 | FUEL INJECTOR CHARACTERIZATION - Various methods are provided for characterizing fuel injector operation. In one embodiment, a method of characterizing fuel injector operation comprises determining a flow error of a single fuel injector of two or more fuel injectors positioned in a first fuel rail by comparing a sum of each of a plurality of injector commands for the single injector to a fuel amount pumped into the first fuel rail, the fuel amount being predetermined. | 03-24-2016 |
20160097338 | METHOD FOR OPERATING AN INTERNAL COMBUSTION ENGINE - A method of operating a compression ignition engine uses an engine having a cylinder and a piston moveable in the cylinder. The method includes forming a combustible mixture by mixing generally homogeneously a first fuel and air and introducing this mixture into the at least one cylinder, and compressing the combustible mixture with the piston in a compression stroke. During the compression stroke but before start of combustion, a second fuel is added to the combustible mixture, thus creating a cylinder charge, the second fuel being easier to autoignite than the first fuel. The compression stroke is continued until combustion starts at those locations in the cylinder where concentration of the second fuel and/or temperature of the mixture is highest. A temperature of the cylinder charge and/or the amount of second fuel added to the combustible mixture is chosen such that a desired duration of combustion can be achieved. | 04-07-2016 |
20160108848 | METHOD FOR CONTROLLING ENGINE COMBUSTION NOISE FEEDBACK - A method for engine combustion noise feedback control includes calculating an engine combustion noise target value by a controller. A cylinder pressure is measured after combustion of fuel according to a main injection timing and an amount of pilot fuel based on the calculated engine combustion noise target value. A combustion noise index (CNI) is calculated by converting the measured cylinder pressure into a cylinder pressure level. The feedback pilot injection is controlled in which the CNI is applied to injection variable control while controlling the main injection timing and the amount of pilot fuel. | 04-21-2016 |
20160123265 | INTERNAL COMBUSTION ENGINE - An internal combustion engine comprises a fuel injection valve which has a needle, wherein a valve opening speed of the needle during post injection is raised as compared with a valve opening speed of the needle during main injection if a pressure of the fuel is not more than a first predetermined pressure, while the valve opening speed of the needle during the post injection is lowered as compared with the valve opening speed of the needle during the main injection if the pressure of the fuel is not less than a second predetermined pressure that is a pressure larger than the first predetermined pressure, when a requested post injection fuel amount is larger than an injection amount threshold value. | 05-05-2016 |
20160123286 | METHOD, SYSTEM, AND FUEL INJECTOR FOR MULTI-FUEL INJECTION WITH PRESSURE INTENSIFICATION AND A VARIABLE ORIFICE - A multi-fuel injector has an internal pressure intensifier which has means to intensify fuels with different viscosities, cetane or octane numbers, with high viscosity fuel being used to intensify itself and low viscosity fuels to high pressure for direct injection into combustion chamber. A fuel injection method and fuel system using such a method of fuel injection is disclosed. A multi-fuel injector with a variable orifice nozzle and variable spray patterns is also disclosed. | 05-05-2016 |
20160153385 | METHOD FOR LIFT PUMP CONTROL | 06-02-2016 |
20160169147 | METHODS AND SYSTEMS FOR FIXED AND VARIABLE PRESSURE FUEL INJECTION | 06-16-2016 |
20160169148 | DIRECT INJECTION ENGINE CONTROLLING DEVICE | 06-16-2016 |
20160195028 | DUAL-FUEL CONSTRUCTIONS FOR OPPOSED-PISTON ENGINES WITH SHAPED COMBUSTION CHAMBERS | 07-07-2016 |
20160195052 | FUEL INJECTOR | 07-07-2016 |
20160201593 | METHOD AND SYSTEM FOR FUEL INJECTION | 07-14-2016 |
20160201594 | INTERNAL COMBUSTION ENGINE | 07-14-2016 |
20160252040 | Multi Injector Thermal Management System and Method | 09-01-2016 |
20160252041 | CONTROL DEVICE FOR DIRECT INJECTION GASOLINE ENGINE | 09-01-2016 |
20170234257 | GDCI TRANSIENT EGR ERROR COMPENSATION | 08-17-2017 |
20190145306 | CONTROL DEVICE FOR COMPRESSION-IGNITION ENGINE | 05-16-2019 |
20190145339 | FUEL INJECTOR | 05-16-2019 |
20190145340 | FUEL INJECTOR | 05-16-2019 |
20190145343 | CONTROLLER FOR INTERNAL COMBUSTION ENGINE AND METHOD FOR CONTROLLING INTERNAL COMBUSTION ENGINE | 05-16-2019 |