Audi Ag

Boehringer Ingelheim Vetmedica Gmbh

Stefan Lehner

Martin Andreas Folger

Michael Wein

Michael Bär

Annette Grave

Christian Graf

Horst Schmitt

Norbert Poellinger

Marc Baur

Martin Arndt

Detlef Mohr

Randolph Seidler

Michael Baer

Stefan Hüfner

Stefan Huefner

A method for operating a clutch of a drive train of a vehicle wherein the clutch, a drive motor primary axis having first wheels that can be driven by the drive motor as first axis and a second axis having second wheels are driven by the drive motor via the clutch as second axis, with the clutch being adjusted between a closed position, wherein a first coupling torque of the clutch is set, and at least one second position differing from the closed position, wherein a second coupling torque of the clutch that is lower than the first coupling torque is set: determining at least one coefficient of friction of a roadway the vehicle is located on; and as a factor of the determined coefficient of friction: adjusting a basic torque of the clutch, with the clutch being prestressed in the second position by the basic torque.

Method for operating a clutch of a motor vehicle, and motor vehicle

A method for operating a drive train for a motor vehicle, with at least one primary drive axle and at least one secondary drive axle, which are operatively connected to each other via a clutch to an adjustable transmission torque. At the same time it is provided that a vibration amplitude of a vibration of the drive train is determined and in a damping operation type of the drive train, the transmission torque is determined from the vibration amplitude and adjusted on the clutch.

Method for operating a drive train for a motor vehicle and corresponding drive train

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Ingolstadt, Germany

Stefan Lehner