Abstract: In a drive train and a method for operating the drive train for a motor vehicle, comprising a hydraulically shiftable transmission unit with an input shaft connectable to an internal combustion engine via a first clutch, a first electric motor, and an oil pump which supplies the transmission unit with pressurized oil and which is driven by the internal combustion engine or by an electric pump motor, the electric pump motor for driving the oil pump is in the form of a sensorless electric motor, and if required, the first electric motor is energized and coupled to the oil pump in order to assist starting the electric pump motor.

Abstract: The invention relates to a method for monitoring the function of a motor-vehicle transmission oil pump (3) which is driven by an electric motor (4) in accordance with an electronic power system (11), and a device for operating a transmission oil pump (3) of a motor vehicle, having an electric motor (4) as a main drive of the transmission oil pump (3) and an electronic power system (11) which is assigned to the electric motor (4), wherein the transmission oil pump (3) can be connected to at least one backup drive (1, 7, 8). The object of the invention is to increase the availability and reliability of a transmission oil pump (3). This object is achieved in that a monitoring unit (12) monitors the function of the transmission oil pump (3) and activates a backup drive (1, 7, 8) if a fault is detected. For this purpose a monitoring unit (12) is provided for monitoring the function of the transmission oil pump (3).

Abstract: In a drive train and a method for operating the drive train for a motor vehicle, comprising a hydraulically shiftable transmission unit with an input shaft connectable to an internal combustion engine via a first clutch, a first electric motor, and an oil pump which supplies the transmission unit with pressurized oil and which is driven by the internal combustion engine or by an electric pump motor, the electric pump motor for driving the oil pump is in the form of a sensorless electric motor, and if required, the first electric motor is energized and coupled to the oil pump in order to assist starting the electric pump motor.

Abstract: The invention relates to a hybrid drive for a motor vehicle having a branching gearbox between an internal combustion engine, a generator and an electric motor which is positively coupled to the drive train for driven vehicle wheels, with the rotation speed of the drive train in each case being determined in two different ways which are asymmetrically redundant with respect to one another.

Abstract: A control method for an internal-combustion engine, working with a variable stopping delay. The stopping delay is essentially affected by the following parameters: the operational mode selected for the internal-combustion engine, the previous driving mode based on a driver-type classification, the past speed profile, the navigational data of GPS-systems, traffic guiding systems and digital street maps, and the actual braking pressure.

Abstract: In a drive arrangement for a motor vehicle, comprising an internal combustion engine and a power electronic unit for controlling an electric machine, the power electronic unit is arranged on a carrier and the carrier comprises a cooler which includes coolant passages and is mounted on the engine such that the coolant passages are in direct communication with coolant passages of a cooling circuit of the internal combustion engine.

Abstract: A method and a device for automatically starting an internal combustion engine having a brake pressure monitoring system and an arrangement evaluating the brake pressure with respect to its profile over time. The brake pressure gradient is evaluated when the brake pedal is released before the vehicle is restarted. If the absolute value of the negative brake pressure gradient when the brakes are released exceeds a threshold value, this upward transgression of the threshold value causes an electronic control system in the motor vehicle to restart the internal combustion engine in conjunction with a start/stop function. The main advantage which is achieved in this way is that the brake pressure gradient precedes the point at which the brake pressure reaches its position of rest so that a vehicle driver can sense the restarting of the internal combustion engine to be more spontaneous than in the prior art.

Abstract: The invention relates to a control method for an internal-combustion engine, working with a variable stopping delay. The stopping delay is essentially affected by the following parameters: the operational mode selected for the internal-combustion engine, the previous driving mode based on a driver-type classification, the past speed profile, the navigational data of GPS-systems, traffic guiding systems and digital street maps, and the actual braking pressure.

Abstract: The invention relates to a method and a device for automatically starting an internal combustion engine having a brake pressure monitoring system and a means of evaluating the brake pressure with respect to its profile over time. The brake pressure gradient is evaluated when the brake pedal is released before the vehicle is restarted. If the absolute value of the negative brake pressure gradient when the brakes are released exceeds a threshold value, this upward transgression of the threshold value causes an electronic control system in the motor vehicle to restart the internal combustion engine in conjunction with a start/stop function. The main advantage which is achieved in this way is that the brake pressure gradient precedes the point at which the brake pressure reaches its position of rest so that a vehicle driver can sense the restarting of the internal combustion engine to be more spontaneous than in the prior art.

Abstract: In a drive arrangement for a motor vehicle, comprising an internal combustion engine and a power electronic unit for controlling an electric machine, the power electronic unit is arranged on a carrier and the carrier comprises a cooler which includes coolant passages and is mounted on the engine such that the coolant passages are in direct communication with coolant passages of a cooling circuit of the internal combustion engine.