Abstract: The present invention relates to a voltage converter comprising a primary side which has a full bridge device which is configured for the purpose of receiving a first DC voltage from a voltage source at a first amplitude and to transmit same to a primary coil arranged in the primary side, comprising a control unit which is designed for the purpose of controlling the full bridge device using PWM signals having phases shifted counter to one another, wherein the control unit is configured to detect an asymmetry in the current supplied to the primary coil based on a current profile in the primary coil, wherein the control unit is designed to compensate for a detected asymmetry by adjusting the PWM signals. The present invention further relates to a corresponding method.

Abstract: The invention relates to a device and to a method for producing a signal having an adjustable pulse duty factor, in particular a pulse-width-modulated signal. For this purpose, the period duration of the pulse-width-modulated signal can be varied. Thus, the pulse duty factor of the pulse-width-modulated signal can be adapted very accurately to the desired pulse duty factor without great switching complexity by using a simple counter with a fixed clock frequency.

Abstract: A hybrid drive system for a motor vehicle includes an internal combustion engine and at least one electric motor, each driving wheels of the motor vehicle. The internal combustion engine is coupled to the corresponding wheels via a first multispeed transmission. The electric motor is coupled to the corresponding wheels via a second multispeed transmission.

Abstract: The invention relates to a device and to a method for producing a signal having an adjustable pulse duty factor, in particular a pulse-width-modulated signal. For this purpose, the period duration of the pulse-width-modulated signal can be varied. Thus, the pulse duty factor of the pulse-width-modulated signal can be adapted very accurately to the desired pulse duty factor without great switching complexity by using a simple counter with a fixed clock frequency.

Abstract: The present invention relates to a voltage converter comprising a primary side which has a full bridge device which is configured for the purpose of receiving a first DC voltage from a voltage source at a first amplitude and to transmit same to a primary coil arranged in the primary side, comprising a control unit which is designed for the purpose of controlling the full bridge device using PWM signals having phases shifted counter to one another, wherein the control unit is configured to detect an asymmetry in the current supplied to the primary coil based on a current profile in the primary coil, wherein the control unit is designed to compensate for a detected asymmetry by adjusting the PWM signals. The present invention further relates to a corresponding method.

Abstract: A method for adapting a separating clutch in a drive train system of a vehicle, the drive train system having an electric machine, an internal combustion engine as well as an automatic transmission having an hydraulic torque converter and a torque-converter lockup clutch, and the separating clutch lying between the electric machine and the internal combustion engine, and the internal combustion engine being started by the electric machine while the electric machine drives the vehicle, having the following steps: in a time interval, the separating clutch is operated in slip operation for cranking up the internal combustion engine, in the time interval an expected rotary speed change of the electric machine is calculated, the rotary speed change expected by calculation is compared to the actually occurring rotary speed change for deviation and the deviation ascertained is used to adapt the separating clutch.

Abstract: The present invention provides compensation of rapid fluctuations in voltage in a DC-to-DC converter. For this, the primary side of the DC-to-DC converter is monitored by means of capacitive voltage dividers. A voltage fluctuation occurring in the process can be identified early and thereupon the DC-to-DC converter can be controlled correspondingly to counteract this.

Abstract: In a method for leak testing in an automated electrohydraulic clutch system in a motor vehicle, in which an electromechanical actuator controls the clutch travel of a clutch via a hydraulic piping system, in order that a defective system is detected reliably and rapidly, the leak in the clutch system is detected using a pressure measurement in the electromechanical actuator and compared to a characteristic clutch curve.

Abstract: The present invention provides compensation of rapid fluctuations in voltage in a DC-to-DC converter. For this, the primary side of the DC-to-DC converter is monitored by means of capacitive voltage dividers. A voltage fluctuation occurring in the process can be identified early and thereupon the DC-to-DC converter can be controlled correspondingly to counteract this.

Abstract: A method is for controlling a hybrid drive of a vehicle, which includes at least one internal combustion engine and at least one electric machine, having a first clutch situated between the electric machine and the drive train of the vehicle and a second clutch situated between the electric machine and the internal combustion engine. In the method, a predefinable clutch torque is applied to the second clutch for a start of the internal combustion engine by the operating electric machine, the rotational speed of the internal combustion engine is monitored, and the clutch torque is incremented to a higher value if the rotational speed of the internal combustion engine is less than a predefinable threshold value within a predefinable time interval.

Abstract: A drive-train system of a vehicle having at least one internal combustion engine, which may be started using an electric machine able to be coupled thereto via a clutch and controllable via an engine-speed controller. A control value of the engine-speed controller is detected toward the end of at least one startup operation of the internal combustion engine while the clutch is still subject to slip, and a comparison of the control value with a setpoint value is used to determine a value deviation, which is able to be compensated with the aid of a correction value in a renewed startup operation. Furthermore, a corresponding method is also described.

Abstract: A method for controlling a hybrid drive of a vehicle, which includes at least one internal combustion engine and at least one electric machine, having a first clutch situated between the electric machine and the drive train of the vehicle and a second clutch situated between the electric machine and the internal combustion engine. Performance parameters of the hybrid drive are controlled as a function of the driver's intent.

Abstract: To permit particularly easy and flexible configuration of a computer program including at least one functional unit, a method is provided which includes the following steps: creation of at least one implementation-independent configuration data file and/or alteration of information filed in the at least one implementation-independent configuration data file; automatic set-up and/or automatic update of configuration data, stored in a configuration data container, as a function of the information filed in the at least one implementation-independent configuration data file; automatic generation of at least one implementation-dependent configuration data file as a function of the configuration data stored in the configuration data container; and automatic configuration of the at least one functional unit as a function of information filed in the at least one implementation-dependent configuration data file.

Abstract: In a method for leak testing in an automated electrohydraulic clutch system in a motor vehicle, in which an electromechanical actuator controls the clutch travel of a clutch via a hydraulic piping system, in order that a defective system is detected reliably and rapidly, the leak in the clutch system is detected using a pressure measurement in the electromechanical actuator and compared to a characteristic clutch curve.

Abstract: A method for operating a hybrid drive system, in particular of a motor vehicle, having at least one electric machine and one internal combustion engine, a disconnecting clutch being provided between the electric machine and the internal combustion engine and a torque converter having a turbine wheel being provided between the electric machine and a hybrid drive output, the disconnecting clutch being engaged for starting the internal combustion engine. It is provided that, as a function of the rotational speed of the turbine wheel of the torque converter, a rotational speed is predefined for the electric machine such that no sudden torque change occurs at the hybrid drive output when the internal combustion engine is started.

Abstract: A method for setting operating states of an internal combustion engine, in particular an internal combustion engine of a hybrid drive. In addition to the internal combustion engine, the hybrid drive includes at least one electric drive, a hybrid coordinator and a control unit assigned to the internal combustion engine in which functions are implemented. The functions request operating states favorable to their running ability from the hybrid coordinator which performs a commensurate modification of the distribution of power between the internal combustion engine and the at least one electric drive.

Abstract: A method for adapting a separating clutch in a drive train system of a vehicle, the drive train system having an electric machine, an internal combustion engine as well as an automatic transmission having an hydraulic torque converter and a torque-converter lockup clutch, and the separating clutch lying between the electric machine and the internal combustion engine, and the internal combustion engine being started by the electric machine while the electric machine drives the vehicle, having the following steps: in a time interval, the separating clutch is operated in slip operation for cranking up the internal combustion engine, in the time interval an expected rotary speed change of the electric machine is calculated, the rotary speed change expected by calculation is compared to the actually occurring rotary speed change for deviation and the deviation ascertained is used to adapt the separating clutch.

Abstract: A hybrid drive system for a motor vehicle includes an internal combustion engine and at least one electric motor, each driving wheels of the motor vehicle. The internal combustion engine is coupled to the corresponding wheels via a first multispeed transmission. The electric motor is coupled to the corresponding wheels via a second multispeed transmission.

Abstract: A drive-train system of a vehicle having at least one internal combustion engine, which may be started using an electric machine able to be coupled thereto via a clutch and controllable via an engine-speed controller. A control value of the engine-speed controller is detected toward the end of at least one startup operation of the internal combustion engine while the clutch is still subject to slip, and a comparison of the control value with a setpoint value is used to determine a value deviation, which is able to be compensated with the aid of a correction value in a renewed startup operation. Furthermore, a corresponding method is also described.

Abstract: A method for controlling a hybrid drive of a vehicle, which includes at least one internal combustion engine and at least one electric machine, having a first clutch situated between the electric machine and the drive train of the vehicle and a second clutch situated between the electric machine and the internal combustion engine. Performance parameters of the hybrid drive are controlled as a function of the driver's intent.