Abstract: It is provided an adjustment system for a vehicle, comprising an adjustment element adjustable along two mutually opposite adjustment directions, an adjustment drive with at least one electric drive motor for generating a drive force for adjusting the adjustment element, and an electronic control unit for controlling the drive motor by specifying a motor current for generating the drive force in a height required for an adjustment operation, wherein via the electronic control unit at least one control variable is specified for setting the motor current. The control variable is based on a torque constant for the electric drive motor and an efficiency parameter characterizing the efficiency of the adjustment drive, which in the regular operation of the adjustment system can be updated via an adaptation routine.

Abstract: A door drive apparatus for adjusting a vehicle door relative to a vehicle body including an adjustment part for power transmission between the vehicle door and the vehicle body, a drive motor and a gear assembly coupling the drive motor to the adjustment part. The gear assembly includes a guide rail and a sliding element guided longitudinally on the guide rail along an adjustment direction, which is adjustable by the drive motor and is coupled to the adjustment part, and the guide rail includes two legs extended parallel to each other along the adjustment direction and the sliding element is guided between the legs along the adjustment direction.

Abstract: It is provided a door drive device for adjusting a vehicle door relative to a vehicle body comprising an adjustment part, which can be adjusted in an adjustment direction, for transmitting force between the vehicle door and the vehicle body, a drive motor, a gear assembly which couples the drive motor to the adjustment part, and a gear housing which at least partially encloses the gear assembly. An adapter element is connected to the gear housing for fastening the door drive device to the vehicle door or the vehicle body. A sensor apparatus is used to determine a measured value which indicates a force between the vehicle door and the vehicle body.

Abstract: A drive arrangement configured to provide motorized adjustment of an adjusting element of a motor vehicle and including a motor, a driveshaft extending from the motor, an output shaft, a spindle configured to translate to adjust the adjusting element, a coupling configured to selectively couple and decouple the spindle from the motor, the coupling, a housing, and a sensor. The coupling including a coupling element configured to generate a signal indicative of rotation angle of the coupling element. The coupling, the output shaft and at least a portion of the driveshaft disposed in the housing. The sensor disposed in the housing and configured to detect the signal.

Abstract: A drive assembly for motorized adjustment of an adjusting element of a motor vehicle. The drive assembly includes a drive having a rotational motor unit and a feed gearing drivingly arranged downstream of the motor unit for generating drive movements along a feed gearing axis in first and second adjusting directions, the drive includes a clutch having a first clutch element, rotationally fixed to a driveshaft of the drive, and a second clutch element, rotationally fixed to an output shaft of the drive, in a state in which they are drivingly coupled to one another, the clutch elements transmit rotational movements from the driveshaft to the output shaft, to generate the drive movements of the feed gearing. The clutch is designed as a curved tooth coupling.

Abstract: A door drive apparatus for adjusting a vehicle door relative to a vehicle body including an adjustment part for power transmission between the vehicle door and the vehicle body, a drive motor and a gear assembly coupling the drive motor to the adjustment part. The gear assembly includes a guide rail and a sliding element guided longitudinally on the guide rail along an adjustment direction, which is adjustable by the drive motor and is coupled to the adjustment part, and the guide rail includes two legs extended parallel to each other along the adjustment direction and the sliding element is guided between the legs along the adjustment direction.

Abstract: The disclosure relates to a linear unit for a flap arrangement with a flap, and a closed position, wherein the linear unit has two drive connections which are coupled to each other via a gearing and are adjustable relative to each other along a geometrical linear axis, wherein the linear unit has a helical spring arrangement, wherein the helical spring arrangement has a first spring element which is configured as a helical spring and a second spring element which is configured as a helical spring, with which helical springs the two drive connections can be pretensioned against each other, wherein the second spring element is oriented coaxially with respect to the first spring element with regard to a geometrical spring axis. It is proposed that the spring wire at one end of the second spring element forms a supporting portion via which the first spring element secures the second spring element axially.