Entries |
Document | Title | Date |
20080196686 | Air gap insulation at cylinder liner - A cylinder liner for an internal combustion engine, especially a gasoline motor, in which a piston can move between a lower and an upper dead center in an axial direction K, and the cylinder liner has a thrust collar, by which the cylinder liner can be fixed in a housing of the internal combustion engine, and there is provided a recess at the cylinder head end, in which there is installed an insert ring with a height h | 08-21-2008 |
20080230032 | METHOD FOR THE PRODUCTION OF A CYLINDER CRANKCASE, AND CYLINDER CRANKCASE PRODUCED ACCORDING TO SAID METHOD - A method for producing a cylinder crankcase is provided, in which a hypereutiectic aluminum-silicon alloy is cast in a rheocasting or thixocasting process and is cast at a temperature ranging from 520° C. to 580° C. | 09-25-2008 |
20080245333 | Four stroke engine with a fuel saving sleeve - A four stroke engine with piston strokes all of equal length whereby the intake stroke displacement and the compression stroke displacement are smaller than the expansion stroke displacement and the exhaust stroke displacement. This is accomplished using the fuel saving sleeve that has a projection on one end. A magnetic force is used to keep the fuel saving sleeve at the top of the engine cylinder during the intake and compression strokes. This makes the sleeve act as an air displacer during the intake and compression strokes. The projection transfers the pressure of burning gases on the sleeve to the piston during the expansion stroke. It also transfers force from the piston to the sleeve during the exhaust stroke. This makes the sleeve act as an enlargement of the piston during the expansion and exhaust strokes. | 10-09-2008 |
20080257297 | HEAVY DUTY CYLINDER - A cylinder for a piston-cylinder assembly comprises an extruded stainless steel cylinder body and stainless steel end caps mounted to opposite ends of the body. A unique configuration of three seals is used to seal each end cap to the cylinder body. | 10-23-2008 |
20080289598 | Large displacement engine - An engine block with a plurality of relatively large piston bores is provided. The engine block is adapted for use of relatively large bore pistons, and preferably duel connecting rod pistons. Configured in this manner the engine block has a relatively large displacement and is especially suited for use with low btu fuels, and more particularly hydrogen. | 11-27-2008 |
20080295795 | Laminated Internal Combustion Engine and Fabrication Technique - The engine block for an internal combustion engine is fabricated from laminated pieces of material instead of cast iron or cast aluminum. This provides extreme flexibility of the design of individual engines. Each lamination piece can be designed to complex three dimensional structures and/or passages. The lamination material itself can be changed to improve strength, thermal conductivity, reduce cost, or any other parameter of interest to those skilled in the art. | 12-04-2008 |
20080314353 | CYLINDER LINER AND METHOD CONSTRUCTION THEREOF - A cylinder liner for receipt in an internal combustion engine cylinder block having a water cooling jacket surrounding a portion of the cylinder liner and method of construction thereof. The cylinder liner has a wall with an inner surface providing a cylinder bore extending along a central axis for reciprocation of a piston against an axial portion thereof and an outer surface opposite the axial portion. The outer surface has a hardened outer layer of purely martensitic microstructure for direct exposure to fluid in the water cooling jacket. | 12-25-2008 |
20090038576 | Opening Cylinder with Clip Connection - An opening cylinder for an open-end spinning device has a core piece over which the opening cylinder is fastened on a drive shaft and a tooth-set carrier supporting the tooth-set. The tooth set-carrier is fastened to the core piece by a clip connection in the axial direction. Additionally, the opening cylinder has a device for the form-fitting connection of the core piece and tooth-set carrier in the circumferential direction with a projecting part and a corresponding recess. The tooth-set carrier is fastened with a clip connection to a core piece of the opening cylinder in the axial direction. The tooth-set carrier has a projecting part for the form-fitting connection with the core piece in circumferential direction. | 02-12-2009 |
20090084339 | INTERNAL COMBUSTION ENGINE - A cylinder of an internal combustion engine is communicated with intake ports. Each of intake valves and each of fuel injection valves are provided to a corresponding one of the intake ports to inject fuel into a combustion chamber through a curved portion and an opening of the corresponding intake port. An injection axis of each fuel injection valve intersects with a surface of the corresponding intake valve placed in a close position at an intersecting point that is located on an upstream side of a central axis of the corresponding intake valve. | 04-02-2009 |
20090095248 | POWER ASSEMBLY FOR INTERNAL COMBUSTION ENGINE WITH IN-CYLINDER DEPOSIT SCRAPER - A power assembly for an internal combustion engine includes a cylinder with a circular wall defining a first inside diameter. A piston is reciprocably housed within the cylinder. An integral, unitary piston deposit scraper is formed in a portion of the circular wall of the cylinder by upsetting a portion of the metallic wall so as to configure a piston scraper with a second inside diameter which is less than the first inside diameter. The inside diameter of the piston scraper closely matches that of the outside diameter of the top land of the piston. As a result, the piston scraper removes combustion deposits from the piston each time it moves into the top dead center position. | 04-16-2009 |
20090126672 | Handheld work apparatus - A handheld work apparatus has an internal combustion engine ( | 05-21-2009 |
20090151686 | SUPERCHARGED INTERNAL COMBUSTION ENGINE - An internal combustion engine includes at least one piston that compresses air in the lower cylinder chamber as it transitions from top dead center to bottom dead center during the power stroke. The air in the lower cylinder chamber is compressed between the downward-moving cylinder and a structure that substantially seals the lower chamber from the crankcase chamber so that compression takes place in a chamber smaller than the crankcase chamber. | 06-18-2009 |
20090293833 | PISTON ACTUATING ENGINE FOR COMBUSTING FUEL - An internal combustion engine having an engine block with a chamber disposed therein containing a reciprocating piston. A head is mounted on the head of the engine block for providing fuel to the chamber. The chamber is designed to have a first end with a first diameter that tapers inward to a second end that has a second diameter that is less than the first diameter and extends into a cylindrical portion such that the reciprocating piston reciprocates within the cylindrical portion. | 12-03-2009 |
20090320783 | METHOD FOR THE PRODUCTION OF A CYLINDER CRANKCASE HAVING MULTIPLE CYLINDER LINERS AND SHORT CYLINDER LINER WITH A MATERIAL STRIP AFFIXED THERETO - A cylinder liner for use in a cylinder crankcase includes a liner body having at least one end face, and a material strip. The material strip is affixed to the liner body and projects axially from the at least one end face of the liner body. | 12-31-2009 |
20100031914 | HOLLOW MEMBER, CYLINDER SLEEVE AND METHODS FOR PRODUCING THEM - The tubular die of a centrifugal casting device of GNo.30 or above is employed suitably and powder is introduced while rotating, and an outer tubular body composed of that powder is provided. Subsequently, molten is introduced to the inner circumferential wall side of the outer tubular body while sustaining rotation of the tubular die thus forming an inner tubular body. The outer tubular body functions as a cooling metal (chiller) when the molten is cooled and solidified. In place of the outer tubular body composed of the powder, molten may be used for forming an outer tubular body or an outer tubular molding molded previously into tubular shape may be employed. | 02-11-2010 |
20100059012 | CYLINDER LINER, CYLINDER BLOCK AND PROCESS FOR THE PREPARATION OF CYLINDER LINER - The present invention a cylinder liner which controls gap formation at the interface between the cylinder liner and a cylinder block main body for accepting the cylinder liner therein, and serves to acquire closely contacting state and enhanced bonding strength between the cylinder liner and the cylinder block main body, and to provide a cylinder block, and further to provide a process for the preparation of the cylinder liner. | 03-11-2010 |
20100065007 | SUPPORTING SLEEVE FOR CYLINDER HEAD SCREWS AND CYLINDER HEAD - The invention relates to a supporting sleeve ( | 03-18-2010 |
20100101526 | Method Of Preparing A Surface For Applying A Spray Coating - A method of preparing the surface of a substrate ( | 04-29-2010 |
20100108014 | SPRAY COATING, METHOD OF FORMING SAME, SPRAY MATERIAL WIRE, AND CYLINDER BLOCK - An arc spray coating that is superior in both wear resistance and machinability, method of forming same, an arc spray wire used to form such a coating, and a cylinder block on whose bore inner surface is formed such an arc spray coating are provided. To this end, the arc spray coating contains Fe as a main component, 0.01% to 0.15% by weight of C, and at least 0.12% by weight of N, and the arc spray wire (wire) contains Fe as a main component, 0.01% to 0.2% by weight of C, and 0.25% to 1.7% by weight of Si, and may further contain at least 11% by weight of Cr as another embodiment. | 05-06-2010 |
20100116240 | MULTI-PIECE THIN WALLED POWDER METAL CYLINDER LINERS - A powder metal cylinder liner with a ratio of the length to the wall thickness greater than 12 made of at least two end to end cylinder liner pieces with each piece having a ratio of the length to the wall thickness of less than 20. The powder metal composition includes approximately between 85% and 99% sponge iron powder, approximately between 0.1% and 2.0% graphite, and approximately between 0.1% and 2.0% ethylene bis-stearamide wax. The cylinder liner pieces can be made using conventional powder metal compaction and sintering processes. | 05-13-2010 |
20100139607 | WET CYLINDER SLEEVE HAVING A CAVITATION-RESISTANT SURFACE - A wet cylinder liner, which exhibits a cast basic body comprised of a cast iron alloy, has at least one outer surface area of which exhibits a thermal injection layer consisting of a basic iron alloy as a coating, with a layer thickness of 1 μm to 1000 μm. | 06-10-2010 |
20100192895 | Steel Material Having a High Silicon Content for Producing Piston Rings and Cylinder Sleeves - The invention relates to a steel material having a high silicon content, and to a method for the production thereof, the steel material being particularly suitable for piston rings and cylinder sleeves. In addition to iron and production-related impurities, the steel material contains 0.5 to 1.2 wt. % carbon, 3.0 to 15.0 wt. % silicon and 0.5 to 4.5 wt. % nickel. Also, the steel material can contain small amounts of the following elements Mo, Mn, Al, Co Nb, Ti, V, Sn, Mg, B, Te Ta La, Bi, Zr, Sb, Ca, Sr, Cer, rare earth metals and nucleating agents such as NiMg, MiSiMg, FeMg and FeSIMg. due to the high Si content, a degree of saturation higher than 1.0 is attained, with the melting temperature of the steel material corresponding to normal cast iron. The steel material can be produced according to a conventional cast-iron technique and has a high resistance to wear and tear and a high structural strength (minimal distortion). | 08-05-2010 |
20100192896 | INTERNAL COMBUSTION ENGINES WITH RING-SHAPED CYLINDERS - An internal combustion engine having ring shaped cylinder is disclosed herein. In one embodiment, an internal combustion engine includes an engine body and a ring-shaped cylinder in the engine body. The ring-shaped cylinder has a center and an outer circumference spaced radially apart from the center. The internal combustion engine further includes a plurality of synchronizing valves at least proximate the outer circumference of the ring-shaped cylinder so that the ring-shaped cylinder is divided into a plurality of cylinder portions. The synchronizing valve has a valve shaft and a valve opening. The internal combustion engine further includes a rotor at the center of the ring-shaped cylinder, and the rotor has isolation blocks extending from the rotor toward the outer circumference of the ring-shaped chamber. The valve openings are configured to receive the isolation blocks and to form seals in the ring-shaped cylinder. | 08-05-2010 |
20100206261 | HIGH-FLOW CYLINDER LINER COOLING GALLERY - A cylinder liner for an internal combustion engine and a method of making the same are disclosed. The cylinder liner may generally include a cylindrical body configured to receive a piston assembly. The cylindrical body may further include a main body portion configured for selective engagement with an engine bore, and an upper flange configured to support the cylindrical body within the engine bore. The cylindrical body may also define an undulating cooling gallery adjacent the upper flange. The undulating cooling gallery generally defines a single coolant flow path extending about a perimeter of the cylindrical body. | 08-19-2010 |
20100263619 | CYLINDER SLEEVE FOR AN INTERNAL COMBUSTION ENGINE AND BLOCK OF CYLINDERS WHICH ARE EQUIPPED WITH ONE SUCH SLEEVE - The invention relates to a cylinder sleeve ( | 10-21-2010 |
20100288222 | CYLINDER - A cylinder realizing reduced reciprocation friction between a piston ring and a bore surface of the cylinder in a region where the piston ring slides. The cylinder in which a piston slides on a bore surface of the cylinder. A plurality of recesses is formed in a stroke center region in the bore surface of the cylinder. The stroke center region is a region between an under face position of a ring groove for a bottom piston ring at a top dead center of the piston and a top face position of a ring groove for a top piston ring at a bottom dead center of the piston. The total of areas of all of the recesses is in the range of 1% to 80% when an area of the stroke center region is 100%, and the recesses are not formed in a region other than the stroke center region of the bore surface of the cylinder. | 11-18-2010 |
20100307443 | ZERO RIDGE CYLINDER BORE - A cylinder block for an internal combustion engine includes a cylinder bore with an inner wall for containing a piston. The piston carries an upper piston ring spaced below a top surface of the piston. A removed area is formed in the inner cylinder wall having a lower edge spaced from a top surface of the cylinder wall and partially defining a void space having a greater diameter than the diameter of the inner cylinder wall. The void space is arranged to receive engine combustion particles scrapped from the inner cylinder wall by the upper piston ring to prevent build up of the particles on the inner cylinder wall in the line of movement of an upper outer edge of the upper piston ring. | 12-09-2010 |
20100319647 | COMBINATION STRUCTURE OF PISTON RING AND CYLINDER LINER FOR INTERNAL COMBUSTION ENGINE - An object of the present invention is to provide a cylinder structure reduced in mutual damage caused by a sliding operation of a piston ring and a cylinder liner when the piston ring having a linear expansion property which follows linear expansion of the cylinder liner made of an aluminum alloy is used. In order to achieve the object, a combination structure of the piston ring and the cylinder liner for an internal combustion engine described below is employed. In the cylinder liner for an internal combustion engine, the inner circumferential surface satisfies the conditions, a ten-point height of roughness profile (Rz | 12-23-2010 |
20110030644 | FLOW-OPTIMIZED CYLINDER DRUM FOR HYDROSTATIC PISTON ENGINES - The invention relates to a cylinder drum ( | 02-10-2011 |
20110139112 | ENGINE COMBUSTION CHAMBER FEATURES FOR CAMSHAFT WITH DIFFERENTIAL VALVE LIFT - An engine assembly includes an engine structure including an engine block defining a cylinder bore and a cylinder head, a piston located in the cylinder bore, and a camshaft assembly. The piston, cylinder head, and cylinder bore cooperate to define a combustion chamber including first and second longitudinal end surfaces defined by the cylinder head and the piston. A first protrusion may extend longitudinally from one of the first and second longitudinal end surfaces and radially inward from a circumference of the combustion chamber to a location between a first intake port and a first exhaust port in communication with the combustion chamber. The camshaft assembly may include a first intake lobe that opens a first intake valve and a second intake lobe that opens a second intake valve. The first intake lobe may be rotationally offset from the second intake lobe in a rotational direction of the camshaft assembly. | 06-16-2011 |
20110155090 | SPRAY MATERIAL, A THERMAL SPRAY LAYER, AS WELL AS A CYLINDER WITH A THERMAL SPRAY LAYER - Spray material for thermally coating a substrate, a thermal spray layer, and a cylinder for a reciprocating piston combustion engine coated with the thermal spray layer. The spray material includes a solid lubricant of ZnO. A volume fraction of ZnO in the spray material lies in a range from 0.1% to 15% of the volume of the spray material. | 06-30-2011 |
20110186001 | Modifying an Internal Combustion Engine for Radical Ignition Combustion - Methods and apparatus for modifying an internal combustion engine for radical ignition combustion to aid in ignition and enhance combustion. In one embodiment, the present invention includes a method of modifying an internal combustion engine with at least one cylinder to control the production and flow of radical ignition species for enhanced combustion comprising the steps of: adding a cylinder spacer plate with at least one opening, wherein each opening corresponds to each cylinder in an engine block of the internal combustion engine; adding at least one radical production member for providing and storing radical ignition species, wherein each member is disposed inside of each opening in the spacer plate and have at least one opening to fluidly connect each member to each cylinder; and attaching the spacer plate to the engine block, wherein the plate is disposed so as to be sandwiched between the engine block and a cylinder head of the internal combustion engine. | 08-04-2011 |
20110239976 | CYLINDER BORE AND METHOD FOR PRODUCING THE SAME - A method for a cylinder bore having a sliding surface which slides with respect to a counter member includes forming the sliding surface on a molded block by a boring processing with respect to the molded block, crushing cavities at the sliding surface and in the vicinity thereof by plastic working after the boring processing, smoothing the sliding surface, and forming a coating having seizure resistance on the sliding surface after the plastic working. | 10-06-2011 |
20120012079 | MULTI-CYLINDER ENGINE - A multi-cylinder engine with a crankcase integrated cylinder block including a cylinder block having a plurality of cylinder bores, a plurality of crank chambers formed by an upper crankcase and a lower crankcase, a bulkhead that partitions between the cylinder bores and the crank chambers, and a honing release portion having a cylindrical honing release surface formed continuously with the cylinder bore in the upper crankcase and the bulkhead. The honing release surface forms an arcuate recessed portion in the bulkhead, the bulkhead is formed with a communication hole that includes a first opening edge on a side of the cylinder bore, a second opening edge on a side of the crank chamber having an opening width decreasing with a distance from the cylinder bore, and a third opening edge that extends substantially in parallel with the cylinder axis. | 01-19-2012 |
20120060788 | CYLINDER FOR A COMBUSTION ENGINE AND A METHOD FOR MAKING THE SAME - A cylinder ( | 03-15-2012 |
20120090570 | METHOD FOR MACHINING, IN PARTICULAR FOR MECHANICAL MACHINING, OF AT LEAST ONE EXHAUST-GAS-CONDUCTING SURFACE REGION OF AN INTERNAL COMBUSTION ENGINE OR CRANKCASE PART, INTERNAL COMBUSTION ENGINE CRANKCASE AND CYLINDER SLEEVE - A method for machining, in particular mechanical machining, of at least one exhaust-gas-conducting surface region of an internal combustion engine or crankcase part, in particular at least one cylinder barrel of a crankcase or at least one cylinder barrel of a cylinder sleeve, includes using a surface-condition-changing machining tool. The surface region is produced from a corrodible material and is brought into contact, during the machining through the use of the surface-condition-changing machining tool, with at least one tribochemically activatable substance being activated during the machining in particular as a function of a defined contact pressure of the machining tool and/or as a function of a defined machining temperature, and forms a corrosion-resistant surface as a triboreaction layer with the respective surface region, by tribochemical reaction. A crankcase and a cylinder sleeve formed in this way are also provided. | 04-19-2012 |
20120216771 | Internal Combustion Engine Having a Crankcase and Method for Producing a Crankcase - An internal-combustion engine has a crankcase, with at least one cylinder for accommodating a piston, the inner face of which cylinder is provided with a coating forming a running surface for the piston. The coating has a plurality of pores and the average size of the pores and/or the pore surface proportion varies over the length of the cylinder. | 08-30-2012 |
20120234284 | Crankcase and Method of Manufacturing Same - A crankcase is provided for an internal combustion engine with at least one coated cylinder bore, which has a chamfer on a separating surface facing a cylinder head. A countersink is arranged on the chamfer. The geometry allows an additional grinding process on a separating surface facing a cylinder head to be omitted. | 09-20-2012 |
20120266840 | FOUR-STROKE INTERNAL COMBUSTION ENGINE AND EXHAUST VALVE - A cylinder portion configured such that a recess (depression) is formed on an upper edge portion of an inner wall of the cylinder portion to prevent the formation of choke between the inner wall and a side edge of a valve umbrella of an exhaust valve, the recess being formed by depressing the inner wall, and the exhaust valve configured such that a cross section of a head portion of the valve umbrella tapers from an outer peripheral edge of the valve umbrella toward a top of the valve umbrella are included. | 10-25-2012 |
20120291744 | SEALING SYSTEM FOR SLIDING SLEEVES FOR CONTROLLING GAS EXCHANGE IN INTERNAL COMBUSTION ENGINES - A sealing system for sliding sleeves for controlling gas exchange in internal combustion engines. The sealing system is designed such that the pressure on the sealing seat of the sliding sleeve increases when the gas pressure increases, which is similar to that of common valves in internal combustion engines. This is obtained by way of a pressure stage on the inner diameter in the region of the sealing seat of the sliding sleeve. As a result, the maximum outer diameter of the sealing seat does not exceed the inner diameter of the piston running surface of the sliding sleeve, the closing pressure acting upon the sliding sleeve being equal to or greater than the maximum possible opening pressure acting upon the sliding sleeve even when the sealing seat is subjected to a total gas pressure. | 11-22-2012 |
20120304954 | CYLINDER LINER WITH A CASE ON A CUFF-RING GROOVE - A cylinder liner for an engine includes a hollow cylindrical sleeve, with an inner surface and an outer surface, that extends from a first end to a second end along a longitudinal axis. The cylinder liner may also include an annular cuff-ring groove, with a radiused fillet region, on the inner surface proximate the first end. The cylinder liner may further include a hardened case formed on the inner surface of the sleeve. The case may extend under a base of the fillet region of the cuff-ring groove. | 12-06-2012 |
20120304955 | METHOD FOR PROCESSING CYLINDER BLOCK, CYLINDER BLOCK AND THERMAL-SPRAYED CYLINDER BLOCK - A method for processing a cylinder block is disclosed, wherein a protrusion protruding toward a crankcase is provided at a crankcase-side edge of a cylinder bore and a sprayed coating is formed on an inner surface of the cylinder bore and an inner surface of the protrusion continuous with the inner surface of the cylinder bore. After forming the sprayed coating, at least part of the protrusion is removed together with the sprayed coating formed on the inner surface of the protrusion. Accordingly, even in the case of removing the edge portion of the cylinder bore on the crankcase side, a sufficient margin to be removed can be ensured while a reduction in size of the cylinder block is achieved. | 12-06-2012 |
20120318228 | GERMANIUM CONTAINING COATING FOR INNER SURFACES OF CYLINDER LINERS - A cylinder liner ( | 12-20-2012 |
20130008403 | SYMMETRIC EXTENDED PORTING - A cylinder of an externally fired, two-stroke engine has at least two exhaust channels. At least the inflow openings of the exhaust channels are located or formed symmetrical in relation to a plane of symmetry containing a longitudinal center axis of the cylinder. The inflow openings of the exhaust channels lying above each other in the cylinder wall surface and spaced apart by wall webs lie distributed over a peripheral region of the cylinder wall surface which in relation to the longitudinal center axis corresponds to a central angle Z of 175°≦Z≦280°, preferably 180°≦Z≦265°. | 01-10-2013 |
20130025559 | HIGH PRESSURE DIE CASTING FLASH CONTAINMENT SYSTEM - Devices for sealing the gap between a bore pin and an insert (e.g., sleeve) during the casting of, for example, internal combustion engine cylinder blocks. Such devices incorporate a sealing ring set that may be set into a recessed channel about a circumference of the bore pin. Radial force on the ring provides a seal between the bore pin and the sleeve that prevents flash from entering gaps therebetween. The ring may take on any of a number of different configurations and the outward force may be generated in various ways—including from the tension of the ring itself. | 01-31-2013 |
20130032117 | CYLINDER LINER SEAL ARRANGEMENT AND METHOD OF PROVIDING THE SAME - A cylinder liner sealing arrangement for an internal combustion engine including a cylinder block having cylinder bores, a cylinder head, a cylinder liner within each cylinder bore and a circumferential cut-out formed in the upper and outer surfaces of the cylinder liner. A circular sealing ring is positioned in the circumferential cut-out with the sealing ring contacting at least the cylinder block and the cylinder liner to form a coolant seal therebetween. The sealing ring includes a seal enhancing configuration formed on at least an outer circumferential surface of the sealing ring with the seal enhancing configuration including at least one of an arcuate portion of a “D” ring seal or a plurality of circumferentially extending ribs. Replacing the cylinder liner seal includes removing the cylinder head while maintaining the position of the cylinder liner within the respective cylinder bore, removing an upper liner seal from within the circumferential cut-out while maintaining the position of the cylinder liner within the cylinder bore, positioning a replacement sealing ring in the circumferential cut-out while maintaining the position of the cylinder liner within the cylinder bore and replacing the cylinder head on the cylinder block of the engine. | 02-07-2013 |
20130047947 | Method of Making a Barbed Surface for Receiving a Thermal Spray Coating and the Surface Made by the Method - A method is disclosed for preparing a surface for mechanically securing a spray coating to a surface. A first series of grooves formed in the surface are intersected with a second series of grooves formed in the surface. A plurality of barbs are formed at the intersections. The spray coating is mechanically secured to the barbs that overhang the first series of grooves. The surface includes the first series of grooves and the second series of groves that intersect the first series of groves. The second series of groves form an undercut portion, or barb, at the intersections of the grooves that mechanically anchor the spray coating. | 02-28-2013 |
20130061826 | STIRLING ENGINE GAS LUBRICATION STRUCTURE - In a case of performing a static pressure gas lubrication by a stirling engine provided with a pair of cylinders of a high-temperature-side cylinder | 03-14-2013 |
20130133608 | CYLINDER LINER OF A RECIPROCATING ENGINE - A cylinder liner ( | 05-30-2013 |
20130139780 | Insert for a Cylinder of an Internal Combustion Engine - To remove contaminations in the area of a fire land ( | 06-06-2013 |
20130167794 | Methods and Systems for Managing a Clearance Gap in a Piston Engine - A piston engine may include a heat pipe capable of transferring heat away from a portion of the piston engine such as a combustion section. The heat pipe may be included as part of a piston assembly, a cylinder, or both. The heat pipe may be filled with a suitable heat pipe fluid that may undergo a phase change such as, for example, water, ethanol, ammonia, sodium, other fluids or combinations thereof. Boiling and condensing of the fluid within the heat pipe may utilize the latent heat of the fluid during heat transfer. Multiple heat pipes may be used in some instances. | 07-04-2013 |
20130167795 | METHODS AND SYSTEMS FOR MANAGING A CLEARANCE GAP IN A PISTON ENGINE - A piston engine may include a non-contact bearing between a piston assembly and a cylinder. The piston may be configured to translate in a bore of the cylinder, and a non-contact bearing may be included in a clearance gap between the piston assembly and the bore. A bearing fluid may be supplied to the clearance gap via the piston assembly and/or cylinder to create the non-contact bearing. A bearing element may be used to direct or otherwise manage the flow of bearing fluid in the clearance gap. The bearing element may include one or more holes, porous portions, and/or passages to direct the bearing fluid to the clearance gap. | 07-04-2013 |
20130167796 | METHODS AND SYSTEMS FOR MANAGING A CLEARANCE GAP IN A PISTON ENGINE - A piston engine may include a clearance gap between a piston assembly and a cylinder. The piston may be configured to translate in a bore of the cylinder. The clearance gap between the piston assembly and the bore may be actively or passively controlled. A control system may provide one or more adjustments based on, for example, a detected temperature, pressure, flow rate, work metric, and/or other indicator. The adjustments may include, for example, adjusting a cylinder liner, adjusting a flow through a bearing element, adjusting a coolant flow, adjusting a heat pipe property, and/or other adjustments. One or more auxiliary systems may be used to provide the adjustments. | 07-04-2013 |
20130263812 | Internal Combustion Engine - An internal combustion engine has a cylinder liner arranged in the cylinder. A piston moves reciprocatingly in a direction of the longitudinal cylinder axis in the cylinder and is guided within the cylinder liner across a section of a movement path of the piston in the cylinder. A combustion chamber disposed in the cylinder is delimited by the piston. In a crankcase, a crankshaft is rotatably supported by a crankshaft bearing, wherein the crankshaft is driven in rotation by the piston about an axis of rotation of the crankshaft. A position of the cylinder liner relative to the crankcase is secured with form fit by a securing element located at an end face of the cylinder liner that is facing the crankcase. No loads are transmitted into the cylinder liner from the crankshaft bearing through the end face of the cylinder liner that is facing the crankcase. | 10-10-2013 |
20130284140 | METHOD FOR ROUGHENING AND COATING A SURFACE - A method for roughening and thermally coating a surface, in particular a cylinder running surface of an internal combustion engine, the roughening being the preparation of the surface for the thermal coating of the surface with a coating. The method is characterized in that different roughening profiles are introduced into the surface during the roughening and the coating has different properties distributed over the surface. This allows the coating or spraying process during the later thermal coating to be carried out with substantially constant spraying parameters. The different properties of the coating, such as hardness, porosity, machinability, chemical composition, oxidation and adhesion, are then obtained just on the basis of the differently roughened surface. | 10-31-2013 |
20130291823 | Cylinder Bore With Selective Surface Treatment And Method of Making The Same - A cylinder bore with selective surface treatment includes a longitudinal axis and a cylindrical wall extending along the longitudinal axis, the cylindrical wall including first and second end portions and a middle portion positioned between the first and second end portions, the middle portion having a greater surface roughness than at least one of the first and second end portions. | 11-07-2013 |
20130340700 | VARIABLE THICKNESS COATINGS FOR CYLINDER LINERS - A cylinder liner for an internal combustion engine includes a liner body defining a longitudinal axis coated with a coating on the interior surface of the liner body that varies in thickness along the longitudinal axis. The coating on the interior surface is thicker in a region of the interior surface corresponding to a top dead center or a bottom dead center of a piston. | 12-26-2013 |
20130340701 | Internal combustion engine and hand-held power tool with internal combustion engine - An internal combustion engine of a hand-held power tool has a crankcase having a circumferential wall extending in a circumferential direction of the crankcase. A crankshaft is supported so as to be rotatable about an axis of rotation within the crankcase. At least one transfer passage extends from the crankcase into the cylinder of the engine, wherein the transfer passage has an inlet port at the crankcase. At least one fuel retaining device is disposed on the circumferential wall of the crankcase. A radial direction, starting at the axis of rotation of the crankshaft and extending outwardly, extends through the at least one fuel retaining device. The at least one fuel retaining device has a depth in the radial direction and a length in the circumferential direction. The at least one fuel retaining device, relative to the radial direction, has an asymmetric cross-section in the circumferential direction. | 12-26-2013 |
20140020647 | SEAL MEMBER, AND PLUG TUBE SEAL STRUCTURE FOR ENGINE - A seal member ( | 01-23-2014 |
20140076261 | CYLINDER OF A COMBUSTION ENGINE FOR A VEHICLE AND CORRESPONDING MANUFACTURING METHOD, MEANS FOR MANUFACTURING THE CYLINDER, SPARK PLUG, COMBUSTION ENGINE AND VEHICLE - A cylinder of a combustion engine for a vehicle includes at least one intake duct and a spark plug which in turn includes a ground electrode. The spark plug is mounted in the cylinder such that during an operation of the combustion engine the ground electrode is cooled in as optimum a manner as possible by an airflow generated by the at least one intake duct. A spark plug and a method for manufacturing a cylinder of a combustion engine are also provided. | 03-20-2014 |
20140083388 | CYLINDER INTERNAL-PRESSURE SENSOR FOR ENGINE - A cylinder internal-pressure sensor is provided with a housing unit | 03-27-2014 |
20140090619 | CYLINDER LINER SEAL ARRANGEMENT AND METHOD OF PROVIDING THE SAME - A cylinder liner sealing arrangement for an internal combustion engine including a cylinder block having cylinder bores, a cylinder head, a cylinder liner within each cylinder bore and a circumferential cut-out formed in the upper and outer surfaces of the cylinder liner. A circular sealing ring is positioned in the circumferential cut-out with the sealing ring contacting at least the cylinder block and the cylinder liner to form a coolant seal therebetween. The sealing ring includes a seal enhancing configuration formed on at least an outer circumferential surface of the sealing ring with the seal enhancing configuration including at least one of an arcuate portion of a “D” ring seal or a plurality of circumferentially extending ribs. Replacing the cylinder liner seal includes removing the cylinder head while maintaining the position of the cylinder liner within the respective cylinder bore, removing an upper liner seal from within the circumferential cut-out while maintaining the position of the cylinder liner within the cylinder bore, positioning a replacement sealing ring in the circumferential cut-out while maintaining the position of the cylinder liner within the cylinder bore and replacing the cylinder head on the cylinder block of the engine. | 04-03-2014 |
20140102399 | ENGINE COMPONENT - The present invention has the objective of solving the problems encountered in coating engine components (engine blocks or sleeves, either fixed or movable) having at least one cylindrical cavity and composed mainly by iron or aluminum, providing them with a coating ( | 04-17-2014 |
20140102400 | CYLINDER WITH MULTIPLE TRANSFER PORTS FOR AN INTERNAL COMBUSTION ENGINE - A cylinder comprises a cylinder axis, a cylindrical wall, and an exhaust port defined in the wall. At least one central transfer port and at least two side transfer ports are defined in the wall. Each of the at least one central transfer port and each of the at least two side transfer ports has a transfer channel extending therefrom. For each of the at least one central transfer port, an angle about the cylinder axis between a center of the central transfer port and a center of the exhaust port is greater than 135° and less than or equal to 180°. For each of the at least two side transfer ports, an angle about the cylinder axis between a center of the side transfer port and the center of the exhaust port is less than or equal to 135°. Engines and cylinder blocks are also disclosed. | 04-17-2014 |
20140102401 | CYLINDER LINER AND STRUCTURAL UNIT CONSISTING OF AT LEAST ONE CYLINDER LINER AND A CRANKCASE - The invention relates to a cylinder liner ( | 04-17-2014 |
20140137831 | Cylinder Bore Coating System - Embodiments of the present innovation relate to a cylinder bore coating system which simultaneously combines both friction and wear properties to enhance engine efficiency and operating life. The cylinder bore coating system includes a relatively thin top layer, such as diamond like carbon layer (DLC), disposed over a thicker, relatively hard and high modulus coating (i.e., an under coating). This combination of layers provides both low friction as well as low wear characteristics to the engine bore, relative to conventional engine bore coatings. | 05-22-2014 |
20140144404 | METHOD FOR PRODUCING A CYLINDER LINER SURFACE AND CYLINDER LINER - A method for producing a cylinder liner surface for a cylinder crankcase of an internal combustion engine has the following method steps: (a) preliminary honing of the inner surface of a cylinder liner consisting of a cast iron material to form depressions in the surface; (b) application of a coating material containing zinc to the honed surface; (c) final honing of the coated surface in such a way that the coating material containing zinc remains only in the depressions formed by the preliminary honing. | 05-29-2014 |
20140182540 | COMBUSTION ENGINE, CYLINDER FOR A COMBUSTION ENGINE, AND CYLINDER LINER FOR A COMBUSTION ENGINE - A combustion engine includes a combustion engine piston cylinder including an interior wall surface, the interior wall surface having a textured pattern comprising a plurality of texture elements over at least part of an axial length of the interior will surface. An area density and/or a volume of the texture elements of the textured pattern for a given surface area of the interior wall surface and/or a depth of the texture elements increases toward a center of the axial length of the interior wall surface. | 07-03-2014 |
20140216388 | ENGINE CYLINDER MID-STOP - According to one embodiment, an internal combustion engine includes a cylinder and liner. The cylinder includes a mid-stop formed in a side wall of the cylinder. The mid-stop includes a first contact surface and an undercut between the first contact surface and the side wall. The liner is positioned within the cylinder and includes a seat having a second contact surface. The second contact surface is supported on the first contact surface. | 08-07-2014 |
20140311438 | METHOD FOR MANUFACTURING CYLINDER BLOCK AND CYLINDER BLOCK - A thermally sprayed coating is formed on an inner surface of a cylinder bore of a cylinder block by using a thermal spray gun. The thermal spray gun is reciprocated along an axial direction in the cylinder bore while being rotated, and injects melted droplets generated by melting a wire made of a ferrous material from a nozzle at its end. At this time, a moving speed of the thermal spray gun along the axial direction into the cylinder bore is made equal-to or larger-than a predetermined value, and the number of reciprocating cycles of the thermal spray gun along the axial direction into the cylinder bore is made equal-to or larger-than a predetermined value. | 10-23-2014 |
20150027398 | WORKPIECE HAVING A CUT-OUT FOR RECEIVING A PISTON - The invention provides for a cylinder bore coating system that includes at least one cylinder bore configured to receive an axially movable piston. The at least one cylinder bore has a recessed area having an axial length and a radial depth. A first coating layer is arranged within at least the recessed area. A second coating layer covers the first coating layer and a portion of the at least one cylinder bore axially spaced from the recessed area. | 01-29-2015 |
20150096521 | Engine - An engine includes a cylinder, a rocker chamber, an air filter, a crankcase and a rocker chamber cover, wherein the rocker chamber cover is disposed above the cylinder. The engine further includes a cover plate, wherein the cover plate is located at the top of the rocker chamber cover, and the rocker chamber cover and the cover plate are spliced to form a separation cavity and a connection channel. According to the engine provided by the invention, the top structure of the rocker chamber is re-designed and the top space of the rocker chamber is sufficiently used so as to achieve the objects of optimizing a lubricating system and reducing emission, as well as reducing the manufacturing cost and difficulty. | 04-09-2015 |
20150096522 | Engine - An engine includes a cylinder, a rocker chamber, an air filter, a crankcase and an oil return passage, wherein a rocker chamber cover is disposed above the cylinder, a cover plate is disposed at the top of the rocker chamber cover, a separation cavity is disposed between the rocker chamber cover and the cover plate, an oil drain passage is disposed in the separation cavity, and the oil drain passage at least includes partial inner wall of the separation cavity. According to the engine provided by the invention, lubricating oil in the separation cavity can be drained quickly by using the oil drain passage to prevent the lubricating oil in the separation cavity from being pressed into the air filter, thus being capable of decreasing the consumption of the lubricating oil when the engine is working and reducing contaminant emission. | 04-09-2015 |
20150144089 | INSERT AND INTERNAL COMBUSTION ENGINE COMPRISING INSERT - An insert that can be positioned in a gap between a first front face of a cylinder liner, the first front face facing a cylinder head, and a second front face of the cylinder head, the second front face facing the cylinder liner. The insert includes at least one compressible material. | 05-28-2015 |
20150144090 | ENGINE HAVING CYLINDER BLOCK - Disclosed are an engine having a cylinder block and a method for manufacturing an engine having a cylinder block. The engine may include cylinder liners each having a cylinder space formed therein, a protruded portion formed on an outside circumference thereof, and a flat surface formed on one side of the protruded portion. The cylinder liners may be arranged such that the flat surfaces of adjacent cylinder liners are in close contact with one another. The engine may also include a liner covering unit formed to surround an outside of the cylinder liners, and an outer block which forms a cooling water chamber with an outside surface of the liner covering unit. | 05-28-2015 |
20150300493 | COMBINATION OF CYLINDER AND PISTON RING - To provide a combination of a cylinder made of a hypereutectic Al—Si alloy and a hard-carbon-coated piston ring both exhibiting excellent wear resistance, the piston ring is provided with a laminate coating at least on an outer peripheral sliding surface thereof; the laminate coating comprising a metal layer, a metal-containing, hard carbon layer, and a metal-free, hard carbon layer in this order from the substrate side; the laminate coating having Martens' hardness (indentation hardness) HMs of 5-13 GPa, indentation modulus E of 70-200 GPa, and a deformation ratio Rpe of 0.45 or less, which is expressed by a ratio (Wp/We) of plastic deformation energy Wp to elastic deformation energy We; and a ratio (Tmf/Tm) of the thickness Tmf of the metal-free, hard carbon layer to the thickness Tm of the metal-containing, hard carbon layer being 2-8. | 10-22-2015 |
20150322888 | ENGINE BLOCK - An engine block has one or more bores configured for receiving one or more respective pistons; one or more coolant passages; and one or more lubricant passages. At least portions of the coolant passages and lubricant passages are disposed adjacent to and about the bores so as to cool the bores. The coolant passage portion extends over a first lengthwise portion of the bores and the lubricant passage portion extending over a second lengthwise portion of the bores. The first and second lengthwise portions are longitudinally spaced apart along the bores. | 11-12-2015 |
20150377177 | CYLINDER LINER HAVING ROLL-BURNISHED RECESS - A cylinder liner is disclosed. The cylinder liner may include a hollow generally cylindrical body extending from a top end to a bottom end along a longitudinal axis, and an annular flange extending radially outwardly from the top end of the body. The cylinder liner may also include an annular recess adjacent the flange at a side closest to the bottom end of the body. The recess may have first and second axial ends, a substantially straight portion extending between the first and second axial ends, and at least one fillet formed at an intersection between the straight portion and at least one of the first and second axial ends. A roll-burnishing operation may be performed on the straight portion and the at least one fillet in a direction along the longitudinal axis. | 12-31-2015 |
20160010585 | A CYLINDER SLEEVE TO BE INSERTED INTO AN ENGINE BLOCK AND AN ENGINE BLOCK | 01-14-2016 |
20160017838 | TEMPERATURE MAINTAINING MEMBER FOR CYLINDER-BORE WALL - A cylinder bore wall insulating member has a contact surface that comes in contact with a wall surface of a cylinder bore wall that forms a cylinder block of an internal combustion engine and defines a groove-like coolant passage, the contact surface being formed of an elastomer or a resin material, and the ratio ((actual area of contact/formation area of contact surface)×100) of the actual area of contact to the formation area of the contact surface being 1 to 50%. The cylinder bore wall insulating member can be easily fitted into the groove-like coolant passage. | 01-21-2016 |
20160017840 | ENGINE UNIT - An engine unit includes an engine body, a crankshaft, and an oil tank. The engine body includes a cylinder unit and a crankcase. The crankshaft is accommodated in the crankcase and extends in the horizontal or substantially horizontal direction. The oil tank is located at a lateral portion of the engine body. The oil tank includes a tank body, a first component, and a second component. The first component is separate from the tank body and is joined to the tank body. The second component is separate from the tank body and is joined to the tank body. A first joint surface between the tank body and the first component extends in a direction different from that of a second joint surface between the tank body and the second component. | 01-21-2016 |
20160017842 | VEHICLE - A vehicle includes a vehicle body and an engine unit. The engine unit is installed on the vehicle body. The engine unit includes a crankshaft, an engine body, an oil tank, and an oil path. The crankshaft extends in a horizontal or substantially horizontal direction. The engine body includes a crankcase, a cylinder unit, and a head cover. The crankcase supports the crankshaft. The cylinder unit is disposed over the crankcase. The head cover is disposed over the cylinder unit. The oil tank is disposed rearward of the engine body. The oil path communicates with a space inside the head cover and is at least partially integral with the oil tank. | 01-21-2016 |
20160032861 | Opposed-Piston Engine Structure With A Split Cylinder Block - An engine structure for a multi-cylinder, opposed-piston engine includes a cylinder block with a plurality of inline cylinders. Each cylinder has ends with an outside diameter and an intermediate portion between the ends of a relatively larger outside diameter than the ends. The cylinder block includes a bearing web structure that positions bearing web elements outside of a plane that longitudinally bisects all of the cylinders. The cylinder block is split into two sections so as to permit cylinder liners to be inserted into and removed from cylinder tunnels in the cylinder block. | 02-04-2016 |
20160047331 | METHOD OF REMANUFACTURING AN ENGINE BLOCK - A method of remanufacturing an engine block is provided. An insert is removed from a recess in a top deck of the engine block that surrounds a cylinder bore in the engine block. A used cylinder liner is removed from the cylinder bore. The used cylinder liner has a flange on an upper edge thereof having a first thickness. The recess in the top deck of the engine block is cleaned. A replacement cylinder liner is positioned in the cylinder bore. The replacement cylinder liner has a flange on an upper edge thereof that is received in the cleaned recess. The flange of the replacement cylinder liner has a second thickness that corresponds to the sum of the first thickness and the depth of the cleaned recess. | 02-18-2016 |
20160053708 | CYLINDER LINER HAVING ANNULAR COOLANT CIRCULATION GROOVE - A cylinder liner is disclosed for use with an engine. The cylinder liner may have a hollow generally cylindrical body with a top end and a bottom end, and a flange extending radially outward at the top end of the hollow generally cylindrical body. The cylinder liner may also have a seal end stop formed on an outer annular surface of the hollow generally cylindrical body an axial distance away from the flange, and an annular groove formed within the outer annular surface of the hollow generally cylindrical body at a location between the end stop and the bottom end. | 02-25-2016 |
20160053709 | CYLINDER LINER ASSEMBLY HAVING THERMAL BARRIER - A cylinder liner assembly is disclosed for use with an engine. The cylinder liner assembly may have a liner with a hollow generally cylindrical body extending from a top end to a bottom end along a longitudinal axis, and an internal recess formed at the top end. The cylinder liner assembly may also have an anti-polishing ring disposed within the internal recess at the top end of the liner, and a seal disposed around the liner at an internal axial end of the anti-polishing ring. A surface roughness of the internal recess, together with a surface roughness of the anti-polishing ring, may create a thermal barrier configured to maintain a desired temperature of the seal. | 02-25-2016 |
20160061143 | TOP DECK SURFACE COATING - A method of manufacturing an engine block is disclosed. In one embodiment, the method includes providing an engine block including a cylinder bore and a top deck with a head face including a predetermined surface roughness. The method also includes masking the cylinder bore with a masking plug, the masking plug being located at a predetermined insertion distance measured from a masking plug outer surface to the head face. The method further includes applying a corrosion resistant coating to the top deck over the head face and machine finishing the engine block including the coating to the engine block specifications. | 03-03-2016 |
20160084193 | CYLINDER LINER HAVING FLANGE WITH ANNULAR GROOVE - A cylinder liner is disclosed for use with an engine. The cylinder liner may have a generally cylindrical body having a top end and a bottom end, and a flange connected to the generally cylindrical body at the top end. The flange may have an external end face, an outer annular surface, and an axial thickness. The cylinder liner may also have a gasket recess formed in the external end face of the flange and having a radial width, and a groove formed in the outer annular surface of the flange at an axial location about midway through the axial thickness of the flange. The groove may have a depth that is about one-third or less of the radial width of the gasket recess. | 03-24-2016 |
20160097340 | CYLINDER LINER ASSEMBLY HAVING AIR GAP INSULATION - A cylinder liner assembly is disclosed for use with an engine. The cylinder liner assembly may have a liner with a hollow, generally cylindrical body extending from a top end to a bottom end along a longitudinal axis. The cylinder liner assembly may also have a seal disposed around the liner at the top end and an anti-polishing ring disposed within the top end of the liner. The anti-polishing ring may have an annular groove formed on an outer surface to provide an air gap between the anti-polishing ring and the liner. The annular groove may axially overlap at least a portion of the seal. | 04-07-2016 |
20160177871 | Cylinder Liner for an Engine Block | 06-23-2016 |
20160201598 | ENGINE AND ENGINE OPERATING MACHINE HAVING THE ENGINE | 07-14-2016 |
20160376690 | PHOSPHATING OR ANODIZING FOR IMPROVED BONDING OF THERMAL SPRAY COATING ON ENGINE CYLINDER BORES - An engine cylinder bore with an anodized or phosphated bondcoat and a method of coating the surface of an engine cylinder bore with an anodized or phosphated bondcoat prior to depositing a thermally sprayed protective coating. Cleaning or related pretreatment operations may also be used. In one preferred form, the cylinder bore is made from an aluminum-based alloy or a magnesium-based alloy, while the bondcoat forms a porous interface between the cylinder bore and the outermost protective coating. Additives may be placed into the anodizing or phosphating solution to promote adhesion and corrosion resistance. | 12-29-2016 |
20170234261 | METHOD FOR PRODUCING A CAST COMPONENT WITH AN INSERT | 08-17-2017 |