Abstract: A method for starting an internal combustion engine by a compressed air starting system, in which in a first starting sequence the engagement of the starter is brought about by compressed air, a decompression valve for relieving the cylinder working space is acted on in the opening direction, and starting of the internal combustion engine is initiated by pulsed compressed air being applied to the starter. In a second starting sequence the decompression valve is acted on in the closing direction, and constant compressed air is applied to the starter.

Abstract: A method for starting an internal combustion engine by a compressed air starting system, in which in a first starting sequence the engagement of the starter is brought about by compressed air, a decompression valve for relieving the cylinder working space is acted on in the opening direction, and starting of the internal combustion engine is initiated by pulsed compressed air being applied to the starter. In a second starting sequence the decompression valve is acted on in the closing direction, and constant compressed air is applied to the starter.

Abstract: A method for operating an internal combustion engine having a motor with cylinder and an injection system having a common rail and injectors for the cylinders. Each injector has an accumulator for holding fuel from the common rail. A multiple injection of fuel is performed during each working cycle of a cylinder, including injecting a first amount in a first injection and injecting a second amount in a second injection, and determining fuel pressure for the common rail and/or the accumulator. A fuel injection amount parameter is determined for the first injection; an individual accumulator pressure and/or a common rail pressure is determined for the second injection; and a fuel injection amount parameter is determined for the second injection. The individual accumulator pressure and/or the common rail pressure are/is considered for determining the injection amount parameter of the fuel for the second injection.

Abstract: In a quantity limiting valve for a fuel injection system of an internal combustion engine including a cylinder with an inflow region and an outflow region separated by a piston axially movably disposed in the cylinder and a flow limiting fluid flow path extending along the piston between the inflow and outflow regions wherein the piston is biased with its front surface into contact with a stop element, the contact area between the front surface and the stop surface includes between the piston and the stop element a contact structure providing for an intermediate space which is in communication with the inflow region thereby to expose the front surface of the piston to the pressure of the fluid in the inflow region.

Abstract: A method for the injector-specific diagnosis of a fuel injection device of an internal combustion engine, including the following steps: detecting a pressure progression in an individual accumulator of an injector in a time-resolved manner; evaluating the detected pressure progression; determining if there is a fault state of the injection device in the region of the injector on the basis of the detected and evaluated pressure progression; and identifying the fault state on the basis of the detected and evaluated pressure progression.

Abstract: A method for controlling an internal combustion engine, wherein a first engine control device generates a control signal to actuate a function of the engine. A switchover device transmits the control signal of the first control device to the engine to actuate the function of the engine. The first control device transmits a sign-of-life signal which indicates functionality of the control device to the switchover device. The first engine control device does not transmit the sign-of-life signal or transmits the signal incorrectly if a fault occurs which endangers proper actuation of the function of the engine by the first engine control device. If the sign-of-life signal of the first engine control device is not or is incorrectly received by the switchover device, the switchover device stops transmitting the control signals of the first engine control device and starts transmitting a control signal generated by a second engine control device to the engine to actuate the function of the engine.

Abstract: A method for operating an internal combustion engine having a motor with cylinder and an injection system having a common rail and injectors for the cylinders. Each injector has an accumulator for holding fuel from the common rail. A multiple injection of fuel is performed during each working cycle of a cylinder, including injecting a first amount in a first injection and injecting a second amount in a second injection, and determining fuel pressure for the common rail and/or the accumulator. A fuel injection amount parameter is determined for the first injection; an individual accumulator pressure and/or a common rail pressure is determined for the second injection; and a fuel injection amount parameter is determined for the second injection. The individual accumulator pressure and/or the common rail pressure are/is considered for determining the injection amount parameter of the fuel for the second injection.

Abstract: A method for the injector-specific diagnosis of a fuel injection device of an internal combustion engine, including the following steps: detecting a pressure progression in an individual accumulator of an injector in a time-resolved manner; evaluating the detected pressure progression; determining if there is a fault state of the injection device in the region of the injector on the basis of the detected and evaluated pressure progression; and identifying the fault state on the basis of the detected and evaluated pressure progression.

Abstract: A method for correcting the start of injection of injectors of an internal combustion engine, including the following steps: determining a target start of current application depending on at least one parameter of the internal combustion engine; detecting a pressure in an individual accumulator of an injector and determining a measured start of injection on the basis of the pressure; determining a target injection delay depending on at least one parameter of the internal combustion engine; calculating an actual injection delay from the target start of current application and the measured start of injection; comparing the target injection delay and the actual injection delay; and calculating a start-of-current-application correction variable on the basis of the comparison and correcting the target start of current application by the start-of-current-application correction variable.

Abstract: A method for determining a start of injection of an injector of an internal combustion engine, including the following steps: time-resolved detecting of an individual storage pressure curve in a measurement interval; determining a test injection start with the aid of the individual storage pressure curve; determining a tendency of the individual storage pressure curve in a predetermined test interval prior to the test injection start; correcting the individual storage pressure curve subject to the tendency; and determining a start of injection with the aid of the corrected individual storage pressure curve.

Abstract: In a quantity limiting valve for a fuel injection system of an internal combustion engine including a cylinder with an inflow region and an outflow region separated by a piston axially movably disposed in the cylinder and a flow limiting fluid flow path extending along the piston between the inflow and outflow regions wherein the piston is biased with its front surface into contact with a stop element, the contact area between the front surface and the stop surface includes between the piston and the stop element a contact structure providing for an intermediate space which is in communication with the inflow region thereby to expose the front surface of the piston to the pressure of the fluid in the inflow region.

Abstract: A method for controlling an internal combustion engine, wherein a first engine control device generates a control signal to actuate a function of the engine. A switchover device transmits the control signal of the first control device to the engine to actuate the function of the engine. The first control device transmits a sign-of-life signal which indicates functionality of the control device to the switchover device. The first engine control device does not transmit the sign-of-life signal or transmits the signal incorrectly if a fault occurs which endangers proper actuation of the function of the engine by the first engine control device. If the sign-of-life signal of the first engine control device is not or is incorrectly received by the switchover device, the switchover device stops transmitting the control signals of the first engine control device and starts transmitting a control signal generated by a second engine control device to the engine to actuate the function of the engine.

Abstract: The invention relates to a method of inspecting gears during their manufacture in the gear cutting machine, wherein the respective workpiece is traveled to by the tool at specific reference points to determine any deviations. The setting of the tool can be corrected by means of these deviations via a control loop.

Abstract: The invention relates to a method of inspecting gears during their manufacture in the gear cutting machine, wherein the respective workpiece is traveled to by the tool at specific reference points to determine any deviations. The setting of the tool can be corrected by means of these deviations via a control loop.