Patent application number | Description | Published |
20090013965 | Carburetor and method of operating the same - A carburetor ( | 01-15-2009 |
20100101523 | Method and Device for Priming a Fuel Metering Device - In a method for priming a fuel metering device for an internal combustion engine with a piston arranged in a combustion chamber and driving a crankshaft that is rotatably supported in a crankcase, with a fuel pump that conveys fuel from a fuel tank to a metering valve that opens into a metering chamber at alternating operating pressure, and with a control unit that calculates and controls timing for the metering valve for metering a fuel quantity corresponding to a load situation of the internal combustion engine, the metering valve is kept open, independent of the calculated timing for the metering valve, for a priming duration in a starting phase of the internal combustion engine when the alternating operating pressure of the metering chamber at the mouth of the metering valve is negative and when a fuel system pressure in the fuel metering device is below a target pressure. | 04-29-2010 |
20110068487 | Carburetor - A carburetor has a housing and an intake passage section disposed in the housing. A throttle element is arranged in the intake passage section and a choke element is arranged in the intake passage section upstream of the throttle element. At least one fuel opening opens downstream of the choke element into the intake passage section. A fuel valve controls a fuel quantity supplied to the at least one fuel opening. At least one auxiliary fuel port opens upstream of the choke element into the intake passage section. | 03-24-2011 |
20110107985 | Handheld work apparatus having an air-cooled combustion engine - The invention relates to a portable, handheld work apparatus such as a chain saw having a handle ( | 05-12-2011 |
20110114055 | Method for operating a combustion engine - A combustion engine ( | 05-19-2011 |
20120193112 | METHOD FOR CONTROLLING THE LIMITING OF THE ROTATIONAL SPEED OF A COMBUSTION ENGINE - A method controls the rotational speed limiting of an engine in a handheld work apparatus. The crankshaft of the engine drives a worktool via a clutch which engages in dependence on the motor rotational speed. Above an engaging speed of the clutch, a drive connection with the crankshaft is made and below the engaging speed, the drive connection is interrupted. A speed control unit monitors the rotational speed of the engine and includes a rotational speed lock circuit which limits the speed to a limit below the engaging speed. During the start of the engine, the lock circuit is switched on; it is switched off after the engine has been taken into operation when a deactivation signal is present, wherein the deactivation signal is generated when an operation change signal of the work apparatus is detected. | 08-02-2012 |
20130160751 | METHOD FOR OPERATING AN INTERNAL COMBUSTION ENGINE - An internal combustion engine has a cylinder in which a combustion chamber, bounded on one side by a reciprocating piston, is formed. The piston drives a crankshaft rotatably mounted in a crank casing. The internal combustion engine has an inlet opening for combustion air into the crank casing, and an outlet opening out of the combustion chamber. The internal combustion engine has at least one overflow duct which connects the crank casing interior to the combustion chamber. The internal combustion engine has a crank casing pressure sensor for measuring the crank casing pressure, a device for determining the rotational position of the crankshaft, and an evaluation device which evaluates the measurements of the crank casing pressure sensor. A method for operating the internal combustion engine is provided where the ambient pressure is determined using the crank casing pressure measured by the crank casing pressure sensor. | 06-27-2013 |
20140366828 | WORK IMPLEMENT WITH AN INTERNAL COMBUSTION ENGINE - A work implement has an internal combustion engine that drives a tool of the work implement via a clutch. The clutch has at least one driving element which is operatively connected to the internal combustion engine and at least one output element which is operatively connected to the tool. The internal combustion engine has a starting device with a starting position and an operating position. To avoid unintentional rotation of the output element when starting the internal combustion engine, the work implement has a blocking device with a detent pawl. In an actuated position, the detent pawl projects into the movement path of the output element, limiting the rotation of the output element. In an unactuated position, the detent pawl releases the output element. The starting device has an actuating device which, in the starting position, keeps the detent pawl in the actuated position. | 12-18-2014 |
20150020772 | METHOD FOR OPERATING AN INTERNAL COMBUSTION ENGINE - An internal combustion engine has an intake channel which opens via a first valve into a crankcase of the engine. The first valve opens at a first frequency (f | 01-22-2015 |
Patent application number | Description | Published |
20080257189 | METHOD FOR OPERATING AN INKING SYSTEM OF A PRINTING PRESS - A method for operating an inking system of a printing press, where the inking system has an ink fountain in which printing ink is kept in readiness, where the inking system has a doctor roller which holds printing ink kept in readiness in the ink fountain, where the inking system has ink sliders or ink blades which adjust the amount of ink to be transferred per ink zone from the ink fountain to the doctor roller, and where the inking system has a film roller which transfers printing ink from the doctor roller to at least one inking system roller downstream from the film roller. At least one ink slider or ink blade is controlled in such a way that the amount of ink transferred zonally to the doctor roller varies over the circumference of the doctor roller. | 10-23-2008 |
20090095185 | WEB-FED PRINTING PRESS - A web-fed printing press is disclosed. The press includes at least one printing-plate-based printing unit for statically printing a printing substrate web with a static printing image and at least one processing device, in particular a printing-plate-less printing device for dynamically printing at least one printing substrate web surface of a printing substrate web with a variable printed image in-line. The processing device is assigned a sensor, which automatically measures a statically printed printing substrate web and, depending upon the measurement of the printing substrate web, triggers the processing device to position the processing to be performed with the processing device in the transport direction and/or transverse to the transport direction of the printing substrate web at the desired position on the printing substrate web. The processing device is assigned an operating device to make control commands available to the processing device independent of a printing press control system. | 04-16-2009 |
20120033242 | PRINTING PRESS CENTRAL CONTROL UNIT - A printing press central control unit and method is disclosed. The central control unit has at least one combined display and operating unit which serves to display objects on the one hand and to enter commands and/or operators on the other hand, such that the combined display and operating unit has a multi-touch screen in combination with a display screen. | 02-09-2012 |
20130279095 | PRINTING PRESS CONTROL STATION - A printing press control station is disclosed. The control station includes a support and a display element. The display element is a combined display and operating element for displaying and inputting data. The display element can be shifted along the support. Either the display and operating element or an assembly that can be shifted together with the display and operating element or the support or a housing receiving the support, is assigned at least one sensor which senses a lateral distance of the display and operating element or of the assembly from a lateral portion of the support or the housing. The data displayed and input on/in the display and operating element can be automatically adapted to the relative position of the display element relative to the support sensed by the or each sensor. | 10-24-2013 |