Abstract: A transmission system including a shift mechanism for operating and controlling the transmission system. To automatically detect geometric characteristic values of the transmission system or of the shifting device a selector motor and a shift motor actuate a select or finger that is displaceably mounted in a selection-shift-passageway layout. Starting from an initial position whose coordinates within the selection-shift-passageway layout are unknown, the selector finger is displaced in the directions of shifting and in the directions of selection in order to detect paths of movement in the direction of selection or shifting. The selector finger is repeatedly displaced to establish the maximum paths of movement until the predetermined transmission geometric characteristic values are completely detected. Also disclosed are a control device for controlling a transmission system that includes a shift mechanism, and a method for controlling such a transmission system.

Abstract: A powershift transmission is proposed using two transmission paths, a friction clutch being assigned to each transmission path and the transmission paths being coupleable to an output shaft for torque transmission. The transmission has a device that detects the clutch torque transmitted by the friction clutch of the active transmission path, which is coupled to the output shaft, and, when the clutch torque falls below threshold value, initiates a disengagement of the active gear ratio.

Abstract: A method for detecting damage done to a clutch having at least two components that transfer torque by frictional engagement comprises the following steps: determining the friction power L introduced into the friction surfaces of the components by slippage between the torque-transferring components, calculating an individual damage value ESW=f(L,t), wherein t denotes time, and rating the clutch as damaged when ESW exceeds a predetermined value.

Abstract: The invention relates to a method and device for securely and comfortably operating a drive train of a motor vehicle, especially for operating a drive train with several clutches.

Abstract: The invention relates to a drive train having a twin-clutch transmission and to a method for controlling the same.

Abstract: A transmission system including a shift mechanism for operating and controlling the transmission system. To automatically detect geometric characteristic values of the transmission system or of the shifting device a selector motor and a shift motor actuate a selector finger that is displaceably mounted in a selection-shift-passageway layout. Starting from an initial position whose coordinates within the selection-shift-passageway layout are unknown, the selector finger is displaced in the directions of shifting and in the directions of selection in order to detect paths of movement in the direction of selection or shifting. The selector finger is repeatedly displaced to establish the maximum paths of movement until the predetermined transmission geometric characteristic values are completely detected. Also disclosed are a control device for controlling a transmission system that includes a shift mechanism, and a method for controlling such a transmission system.

Abstract: A parking lock for an automated transmission of a motor vehicle includes a first spring-type actuator for engaging the parking lock, a transmission actuator, a release device operable using the transmission actuator for disengaging the parking lock, and a retaining device. The retaining device is configured to counteract at least one of the spring-type actuator and a second spring-type actuator so as to hold the parking lock in a disengaged state.

Abstract: In a motor vehicle transmission, gears representing different transmission ratios are engaged by applying a force to an actuator output element that couples a selected gear to a rotary shaft. A synchronizing device blocks the coupling of the gear to the shaft until at least an approximate synchronization of rpm-rates has been achieved. A synchronization threshold position corresponding to the blocked condition of the actuator element is stored in a memory of a controller device. The controller device periodically performs an automatic adaptation of the stored value for the synchronization threshold position.

Abstract: Actuation devices are disclosed for a pressure-closed clutch where the position of an actuation member is acquired by an incremental sensor. In an embodiment of the actuation device, the signal of the incremental sensor is acquired in case of a sudden change in the power consumption of an actuator and is used as a new reference signal. In another embodiment, the actuation member, while the spindle is rotating, is moved by a recovery spring during the closing of the clutch against a stop and the signal of the incremental sensor upon the attainment of said stop is used as a reference signal.

Abstract: The invention relates to a method for controlling gear-shifting processes of a powershift gearbox which can be coupled to a drive motor and has gear steps comprising two friction clutches and a plurality of clutches, and at least one gearbox actuator for actuating the gear steps. Said method comprises the following steps: the torque of the drive motor is received by the new friction clutch associated with the new gear step to be engaged; before the disengagement of the old gear step and before or during the torque reception, a pre-determined pre-tensioning force is applied to the clutch of the old gear step by means of the gearbox actuator; and the old gear step is disengaged when the motor torque and the clutch torque are balanced.

Abstract: In a method for operating an electronically commutated (EC) motor that has a primary part having a coil and a secondary part having magnet segments, a measuring sequence is determined that has a plurality of measured value combinations, which are a function of the relative position between secondary part and primary part and each of which includes a number of measured values that corresponds to the number of magnetic fields sensors that are used for the determination. The coil is supplied with power as a function of the measured value combinations. The absolute position of the secondary part is determined by positioning of the secondary part at a reference position and by an absolute position value being tracked at each change of the measured value combination starting from a reference position value.

Abstract: A method for controlling at least two clutches in a twin-clutch gearbox of a motor vehicle, wherein at least one clutch is opened by at least one emergency valve. A twin-clutch gearbox of a motor vehicle, consisting of at least two clutches actuated by at least one clutch actuator by means of a release system, especially for carrying out said method, whereby an emergency valve is provided in order to open at least one clutch.

Abstract: A method is proposed for triggering the clutch moment of a clutch of an automated gear in the power train of a vehicle with the creep function activated, where the clutch moment is triggered as a function of the slippage on the clutch and/or as a function of the speed of the vehicle. Furthermore, a device is proposed for triggering the clutch moment of a clutch of an automated gear, in particular, to implement the abovementioned method where at least one control device is provided which triggers the clutch moment as a function of the slippage on the clutch and/or as a function of the speed of the vehicle.

Abstract: In a method of operating a motor vehicle with an electronically controlled automatic clutch device, a control device and one or more data-storing devices for values of operating quantities and parameters, the values are stored in at least duplicate form in the data-storing device. The data are stored in prescribed formats and the integrity of the data is checked according to prescribed criteria, to ensure that incorrect data are not used in the operation of the vehicle.

Abstract: The invention relates to a method for controlling and/or regulating a drive train in a vehicle with an engine and a gearbox, especially an automatic gearbox, whereby depending on a warning signal and a stopping request of the driver an engine stalling aid is launched. The invention also relates to a drive train for a vehicle with an engine and a gearbox, especially an automatic gearbox, especially for carrying out said method.

Abstract: The invention relates to methods and devices for actuating a parking brake in a gearbox which is actuated in an automated manner, whereby gear changes are carried out by means of at least one electrically driven actuator, gear positions can be selected by means of a selector device, and the parking brake can be activated by means of the selector device when the vehicle is stationary or moving slowly. The invention also relates to a vehicle provided with an additional gearbox. The ignition key can only be removed, according to the inventive methods and devices, when the gearbox is in the P state and the additional gearbox is not in the N state. The invention further relates to a method and device, whereby the additional gearbox can only be shifted in the N state when the gearbox is not in the P state.

Abstract: A clutch-actuating device for a clutch in a motor vehicle power train has an actuator motor driving an actuating member and a transfer mechanism which transmits the movement of the actuating member to a clutch release element that is movable against an opposing force of a clutch spring to displace the clutch from a closed position to an open position. The transfer mechanism has a first movement range in which the movement of the actuating member in the opening direction of the clutch does not displace the clutch from its closed position, and a second movement range in which the movement of the actuating member causes a displacement of the clutch. The transfer mechanism has an interval of loose play, which is used up within the first range.

Abstract: A double clutch transmission in connection with an electric unit, as well as a method for operating the transmission.

Abstract: An apparatus and method of use thereof for operating a motor vehicle. The apparatus comprises a starter generator between two clutches on the crankshaft. The starter generator is activated in order to start the internal combustion engine at the moment when the transmission-side clutch passes into the slipping/sliding state.

Abstract: The invention relates to a method for adjusting the gearbox actuation system of an automatic gearbox of a vehicle, whereby at least one reference travel is made with the gear engaged. The invention further relates to a gearbox actuation system for selecting and engaging gears in an automatic gearbox of a vehicle, especially for carrying out the inventive method, whereby at least one reference travel is made for the purpose of adjustment.