Abstract: A method for the fail-safe operation of a hybrid vehicle having an internal combustion engine, an electric motor, and additional vehicle assemblies. A substitute measure that then still allows the vehicle to be operated under emergency running conditions is initiated if a vehicle assembly fails. A performance quantity that is characteristic of the driving-dynamics situation in which the vehicle finds itself is recorded prior to initiating the substitute measure, and is compared to at least one limit value. The substitute measure is initiated if the limit value is exceeded or not attained. A device which includes a device for implementing such a method is also provided.

Abstract: A drive device for a vehicle, an electric machine and an axle which is drivable by the electric machine. A disengageable mechanical coupling is provided between the drivable axle and the electric machine. This coupling is designed as a shiftable freewheel coupling.

Abstract: A method for the fail-safe operation of a hybrid vehicle having an internal combustion engine, an electric motor, and additional vehicle assemblies. A substitute measure that then still allows the vehicle to be operated under emergency running conditions is initiated if a vehicle assembly fails. A performance quantity that is characteristic of the driving-dynamics situation in which the vehicle finds itself is recorded prior to initiating the substitute measure, and is compared to at least one limit value. The substitute measure is initiated if the limit value is exceeded or not attained. A device which includes a device for implementing such a method is also provided.

Abstract: A drive device for a vehicle, an electric machine and an axle which is drivable by the electric machine. A disengageable mechanical coupling is provided between the drivable axle and the electric machine. This coupling is designed as a shiftable freewheel coupling.

Abstract: A device and a method for recovering energy during a braking operation of a hybrid vehicle which includes an electric machine in addition to an internal combustion engine, as well as a hydraulic or pneumatic brake system which is operated by a foot brake pedal). The recovery device includes a pedal position transducer which detects at least an actuation of the foot brake pedal in an initial range, and an electronic system which evaluates the signal of the pedal position transducer and activates the electric machine accordingly in generator mode when the driver actuates the foot brake pedal in the initial range.

Abstract: A method and device for detecting and stabilizing a fishtailing trailer using wheel forces. In particular, a method for stabilizing a vehicle combination made up of a towing vehicle and a trailer in which lateral forces acting on at least one wheel or at least one tire are ascertained with the aid of a sensory system that detects wheel forces or tire forces, the existence of a fishtailing movement of the trailer is detected from the ascertained lateral forces and, in the event of a detected fishtailing movement of the trailer, a braking intervention and/or steering intervention is performed.

Abstract: A method of operating a cooling and heating circuit of a motor vehicle driven by an internal combustion engine includes providing a first cooling medium path through a bypass conduit, a second cooling medium path through a main cooler of the internal combustion engine, a third cooling medium path through a heating heat exchanger, subdividing the cooling medium paths by an electrically actuated valves and forming cooling medium flows by an electrically driven pump, controlling both the valves and the pump by an electronic control unit in dependence on operational and environmental parameters as well as nominal values, reversing a feeding direction of the electrically operated pump in a first operational phase of the internal combustion engine at low temperatures of the internal combustion engine and turned on first cooling medium path, and feeding the cooling medium by the pump in a lower region of the internal combustion engine.

Abstract: A method for operating an internal combustion engine (10) installed in a motor vehicle having controlled intake and exhaust valves and that is coupled in fixed fashion with an electrical machine (16) charging an electrical energy accumulator, in particular a battery (21), wherein, in order to enable the electrical machine to perform recuperation on overrun or during braking operation of the internal combustion engine (10), the drag power or braking power of the internal combustion engine is regulated via intervention in the valve actuation process so that a braking or deceleration behavior of the motor vehicle is obtained that is familiar to the driver of the motor vehicle, wherein the valve actuation process and a regulation of the generator and motor operation of the electrical machine (16) are carried out as a function of the state of charge, preferably of at least four levels of the state of charge, of the energy accumulator (21), and wherein the valve actuation process and the regulation of the electrica

Abstract: A method an device for detecting and stabilizing a fishtailing trailer using wheel forces. In particular, a method for stabilizing a vehicle combination made up of a towing vehicle and a trailer in which lateral forces acting on at least one wheel or at least one tire are ascertained with the aid of a sensory system that detects wheel forces or tire forces, the existence of a fishtailing movement of the trailer is detected from the ascertained lateral forces and, in the event of a detected fishtailing movement of the trailer, a braking intervention and/or steering intervention is performed.

Abstract: A drive system for motor vehicles, in particular having an internal combustion engine (13) as a main drive, a driving clutch (15), a transmission (16) and at least one drive axle (17) in the main drive train (10), furthermore having a secondary drive train (11) and having secondary assemblies (19) which can be disposed in the secondary drive train (11), the secondary drive train (11) being capable of being coupled to the main drive train, and having an electric machine operating as a starter generator (20), characterized in that the secondary drive train (11) has its own secondary assembly drive (22) which can be coupled to the starter generator (20), and that the secondary assembly drive (22) and the starter generator (20) can be coupled to the driving axle (17) of the motor vehicle either individually or jointly, with or without the main drive (13), to drive the motor vehicle.

Abstract: The invention relates to a drive train for a motor vehicle, having an internal combustion engine (1), having an electric machine (2), which upon starting of the engine (1) generates a torque, and having a clutch (3), which is disposed between the engine (1) and a gear train (4) by way of which a torque generated by the engine (1) can be transmitted to at least one vehicle drive wheel. A mechanism (5, 6) is provided, which upon starting of the engine can actuate the clutch (3) in such a way that a first part of the torque generated upon starting of the engine by the electric machine (2) is transmitted to the at least one vehicle drive wheel, and a second part of the torque generated by the electric machine and sufficient for starting the engine is transmitted to the engine.

Abstract: A method of operating a cooling and heating circuit of a motor vehicle driven by an internal combustion engine includes providing a first cooling medium path through a bypass conduit, a second cooling medium path through a main cooler of the internal combustion engine, a third cooling medium path through a heating heat exchanger, subdividing the cooling medium paths by an electrically actuated valves and forming cooling medium flows by an electrically driven pump, controlling both the valves and the pump by an electronic control unit in dependence on operational and environmental parameters as well as nominal values, reversing a feeding direction of the electrically operated pump in a first operational phase of the internal combustion engine at low temperatures of the internal combustion engine and turned on first cooling medium path, and feeding the cooling medium by the pump in a lower region of the internal combustion engine.

Abstract: In the case of a method for operating an internal combustion engine (10) installed in a motor vehicle having controlled intake and exhaust valves and that is coupled in fixed fashion with an electrical machine (16) charging an electrical energy accumulator (21), in order to enable recuperation on overrun or during braking operation of the internal combustion engine (10) while maintaining the braking or deceleration behavior of the motor vehicle expected by the driver, the drag or braking power of the internal combustion engine is regulated by intervening in the valve actuation process so that the sum of the braking power of the electrical machine and the internal combustion engine corresponds at any point during vehicle deceleration to the braking power produced by a conventional internal combustion engine having “conventional” valve actuation.

Abstract: The invention relates to a pulse starting method for an internal combustion engine in which, during a wind-up phase, a flywheel mass is accelerated in a rotary driven fashion and then during a coupling phase, the rotating flywheel mass is coupled to a rotatably supported shaft of the engine, preferably the crankshaft, in order transmit torque, which is distinguished by the fact that during the wind-up phase (15) and/or the coupling phase (21, 22), the rotational speed progression of the flywheel mass (3) is evaluated, that based on this evaluation, a deduction is made as to whether a successful start of the engine (1) is possible, and that if a successful start is not expected, the shaft (2) is used to bring the engine (1) into an operating position that is favorable for a subsequent second starting attempt.

Abstract: The invention relates to a drive train for a motor vehicle, having an internal combustion engine 1, having an electric machine 2, which upon starting of the engine 1 generates a torque, and having a clutch 3, which is disposed between the engine 1 and a gear train 4 by way of which a torque generated by the engine 1 can be transmitted to at least one vehicle drive wheel.

Abstract: The invention concerns a system and a method for starting and/or positioning an internal combustion engine ICE, whereby an electric machine S/G is provided that is connected by way of a spring-and-damper assembly S/D to the internal combustion engine having a total start-up torque T1.

Abstract: The invention concerns a starter (5) for an internal combustion engine (ICE), whereby the starter (S) comprises a drive (D).

Abstract: In a drive train assembly for a motor vehicle, which includes successively arranged an internal combustion engine, a starter clutch, an electrical machine a drive clutch, and an automatic transmission, preferably an automated manual transmission, a common double clutch positioner is assigned to the two clutches, which enables a selective setting of the applicable status (open or closed) of the clutches by assumption of a corresponding switching position.

Abstract: An electrical machine apparatus for starting an internal combustion engine and supplying voltage to an on-board electrical system of a motor vehicle having a main gear, includes an electrical machine, a planetary gear through which the electrical machine is coupleable to the engine, the electrical machine being switchable over from a motor mode to a generator mode, the gear being switchable over for adjusting an rpm of the electrical machine, the electrical machine being coupleable to a drive train of the engine via the gear so that for synchronizing the main gear, speed-changing stages in the gear and thus a moment of mass inertia of the electric machine are selectable in accordance with a desired rpm adaptation of the drive train.

Abstract: The invention relates to a starting/driving unit for an internal combustion engine (VM) of a motor vehicle with at least two starting methods, which has a clutch (K) between the crankshaft (KW), the engine (VM), and the vehicle transmission (FG) as well as an electric machine which is connected to the engine (VM) by way of the clutch (K). With the electric machine, the two starting methods can be executed in an optimal fashion solely by virtue of the fact that through rotation of the crankshaft by means of the electric machine, each starting method is preceded by a start clearing phase in which the starting conditions are detected when the clutch is engaged, a decision is made as to the subsequent operating phases (direct start phase, positioning phase, preinjection phase, impulse start phase) and their starting parameters are determined.