Abstract: The invention relates to a starter device (1) for starting internal combustion engines, comprising an electromagnetic toe-in mechanism which is used to displace an axially displaceable pinion shaft (5), starter pinions (6) which are arranged in the front thereof, in addition to a start-stop mechanism which is embodied in such a manner that in a stop phase of the internal combustion engine, even when the internal combustion engine is stopped, said start-stop mechanism provokes a positioned state of the toe-in mechanism, such that during a subsequent starting of the internal combustion engine, the starter pinion (6) is already arranged in an advanced position, enabling power loss to be reduced. This is achieved by a maintaining mechanism (15) which maintains the electromagnetic toe-in mechanism in the advanced position and in a currentless manner during and/or after the stop phase.

Abstract: In a method for starting an internal combustion engine (60) having multiple combustion chambers (62, 64, 66, 68), wherein said internal combustion engine (60) has a starting system (50) and is operated using a start-stop function, and wherein said starting system (50) is actuated after a stop phase in operation of said internal combustion engine (60) to restart said internal combustion engine (60), a combustion chamber (62, 64, 66, 68) to be ignited first of the multiple combustion chambers (62, 64, 66, 68) is determined upon a restart of the internal combustion engine (60), and after a first ignition of the combustion chamber (62, 64, 66, 68) to be ignited first, speed data for the internal combustion engine (60) are detected, and a starter release of the starting system (50) is caused if the detected speed data meet a predetermined starter release criterion.

Abstract: In order to make a start-up of an internal combustion engine as quick as possible, whereby an electrical power output, which is as small as possible, is required, it is proposed to at least periodically activate a direct starting control device for the generation of a combustion torque and an electrical starter for the generation of a starter torque simultaneously during the start-up. In so doing, the power output of the electric starter is controlled as a function of a current combustion torque, so that the starter is continually operated only at a currently required power output. For this purpose, the electric starter is, for example, controlled in an open- and/or closed-loop in such a way that the current total torque resulting from the current combustion torque and the current starter torque does not undershoot a specifiable set point torque.

Abstract: A method is described for determining information about a rotational speed of a compressor, in particular a turbocharger, by providing a measuring signal, in particular a microwave measuring signal, which is directed at a compressor impeller of the compressor, so that the measuring signal is reflected on revolving blades of the compressor impeller, detecting the measuring signal reflected by one or more blades, and determining the information about the rotational speed as a function of the reflected measuring signal.

Abstract: In a method for operating a direct-injection internal combustion engine, a position of at least one piston inside a cylinder in which the combustion engine is at a standstill is determined; and a starting cylinder into which fuel is injected first is selected for a start following the standstill. An instantaneous charge of the starting cylinder is determined as a function of a duration of the standstill of the combustion engine. A distance (d) between the piston of the starting cylinder and a specified position of the piston is calculated. A minimum distance of the piston of the selected cylinder is determined as a function of the instantaneous charge; and another cylinder is selected as starting cylinder if the distance (d) between the piston of the starting cylinder and the specified position is less than the minimum distance.

Abstract: A method for operating a compressor, which supplies an internal combustion engine that is assigned to the compressor at its output end with air compressed to a boost pressure, in which the boost pressure is reducible by releasing the compressed air at least partially via a pressure release valve. The air released via the pressure release valve is used for driving a compressor wheel of the compressor.

Abstract: In a method for operating a direct-injection internal combustion engine, a position of at least one piston inside a cylinder in which the combustion engine is at a standstill is determined; and a starting cylinder into which fuel is injected first is selected for a start following the standstill. An instantaneous charge of the starting cylinder is determined as a function of a duration of the standstill of the combustion engine. A distance (d) between the piston of the starting cylinder and a specified position of the piston is calculated. A minimum distance of the piston of the selected cylinder is determined as a function of the instantaneous charge; and another cylinder is selected as starting cylinder if the distance (d) between the piston of the starting cylinder and the specified position is less than the minimum distance.

Abstract: The invention relates to a starter device (1) for starting internal combustion engines, comprising an electromagnetic toe-in mechanism which is used to displace an axially displaceable pinion shaft (5), starter pinions (6) which are arranged in the front thereof, in addition to a start-stop mechanism which is embodied in such a manner that in a stop phase of the internal combustion engine, even when the internal combustion engine is stopped, said start-stop mechanism provokes a positioned state of the toe-in mechanism, such that during a subsequent starting of the internal combustion engine, the starter pinion (6) is already arranged in an advanced position, enabling power loss to be reduced. This is achieved by a maintaining mechanism (15) which maintains the electromagnetic toe-in mechanism in the advanced position and in a currentless manner during and/or after the stop phase.

Abstract: The invention relates to a turbocharger for a combustion engine, in particular of a motor vehicle, with at least one variable turbine geometry turbine, which exhibits a rotor disk and vanes arranged on a vane support, which are spaced apart from each other around the rotor disk in at least one circumferential area, and with an adjuster to select the angular setting of the vanes. It is provided that the vanes (6) are fixed securely to the vane support (5), and exhibit different angular settings (?1, ?2, ?3) relative to the rotor disk (3) in varying sectors (8, 9, 10) of the circumferential area (7), wherein the turbine (2) exhibits a cover device (12) that can rotate relative to the vane support (5) with at least one opening (14, 20) in its jacket surface (16) for purposes of sector selection.

Abstract: A method and a device for reducing vibrations during the shutdown or startup of an engine, in particular an internal combustion engine, in which the vibration behavior of the engine is determined at least during shutdown and/or startup, a control signal is applied to at least one engine mounting whose damping properties are settable via the control signal, and the control signal is calculated in such a way that a vibration behavior of the engine materializes according to a setpoint vibration behavior in which vibrations are introduced, for example into a passenger compartment, at a level which lies below a predefined threshold value.

Abstract: Internal combustion engine with a power train, to which a torque of a starter can be transferred, wherein the power train is connected to the crankshaft of the internal combustion engine via a clutch, and in so doing, the clutch has an engaged position, wherein a drive torque from the starter can be transferred to the crankshaft, and a disengaged position, wherein the drive torque from the starter cannot be transferred to the crankshaft.

Abstract: A method for operating an internal combustion engine having at least one triggerable intake valve and at least one triggerable discharge valve, in which the internal combustion engine is directly started in a start-up operating mode and, following the start, is operated in at least one other operating mode. A starting discharge instant of a discharge valve of the internal combustion engine that is used during the start-up operating mode is retarded in time with respect to a standard discharge instant so as to improve the direct start-up characteristics of the internal combustion engine. In addition, to further improve the direct start-up characteristics, it is possible to retard a closing instant of an intake valve that is used during the start-up operating mode with respect to a standard closing instant.

Abstract: In order to make a start-up of an internal combustion engine as quick as possible, whereby an electrical power output, which is as small as possible, is required, it is proposed to at least periodically activate a direct starting control device for the generation of a combustion torque and an electrical starter for the generation of a starter torque simultaneously during the start-up. In so doing, the power output of the electric starter is controlled as a function of a current combustion torque, so that the starter is continually operated only at a currently required power output. For this purpose, the electric starter is, for example, controlled in an open- and/or closed-loop in such a way that the current total torque resulting from the current combustion torque and the current starter torque does not undershoot a specifiable set point torque.

Abstract: The invention relates to a method and a device (1) for controlling an internal combustion engine upon starting, having a detection means (420) which detects operating parameters of the engine, in which a calculation means (410), taking the detected operating parameters before the start of the engine into account, specifies a starting strategy, and the calculation means (410), as a function of the specified starting strategy, defines control parameters for controlling a runup to engine operating speed, and a control means (430) monitors the runup to engine operating speed, and in the event of a runup to engine operating speed that deviates from the starting strategy, the control means (430), adapts the control parameters accordingly.

Abstract: The present invention relates to methods for charging at least one combustion chamber (12) of a spark-ignition combustion engine (10) with fuel and air. At least one combustion chamber charge is produced during a shutoff phase of the internal-combustion engine (10) and is ignited when the internal-combustion engine (10) is subsequently started. The methods are characterized in that, during the shutoff phase, at least one measure is taken to produce a high percentage of fuel vapor in the combustion chamber charge. The present invention also relates to a control unit for controlling the methods.

Abstract: The present invention relates to a method and a device (1) for control of an internal combustion engine (500) at a start, a recording means (420) determining the position of a piston of a cylinder which is beginning compression or entering an intake phase before the start of the internal combustion engine, and a calculation means (410) specifying a starter torque as a function of this piston position.

Abstract: The invention relates to a method and a device (1) for controlling an internal combustion engine upon starting, having a detection means (420) which detects operating parameters of the engine, in which a calculation means (410), taking the detected operating parameters before the start of the engine into account, specifies a starting strategy, and the calculation means (410), as a function of the specified starting strategy, defines control parameters for controlling a runup to engine operating speed, and a control means (430) monitors the runup to engine operating speed, and in the event of a runup to engine operating speed that deviates from the starting strategy, the control means (430), adapts the control parameters accordingly.

Abstract: The invention relates to a method and a device (1) for controlling an internal combustion engine (500), in which a calculation means (410), before a start of the engine, recognizes a possible self-ignition operating state as a function of operating parameters and ascertains suitable control parameters for preventing this possible self-ignition operating state.

Abstract: The present invention relates to methods for charging at least one combustion chamber (12) of a spark-ignition combustion engine (10) with fuel and air. At least one combustion chamber charge is produced during a shutoff phase of the internal-combustion engine (10) and is ignited when the internal-combustion engine (10) is subsequently started. The methods are characterized in that, during the shutoff phase, at least one measure is taken to produce a high percentage of fuel vapor in the combustion chamber charge. The present invention also relates to a control unit for controlling the methods.

Abstract: A method for operating an internal combustion engine having at least one triggerable intake valve and at least one triggerable discharge valve, in which the internal combustion engine is directly started in a start-up operating mode and, following the start, is operated in at least one other operating mode. A starting discharge instant of a discharge valve of the internal combustion engine that is used during the start-up operating mode is retarded in time with respect to a standard discharge instant so as to improve the direct start-up characteristics of the internal combustion engine. In addition, to further improve the direct start-up characteristics, it is possible to retard a closing instant of an intake valve that is used during the start-up operating mode with respect to a standard closing instant.