公开(公告)号：US11174906B2

公开(公告)日：2021-11-16

申请号：US16321568

申请日：2017-07-26

Applicant: AUDI AG

Inventor： Michael Baer ,  Martin Arndt ,  Christian Graf ,  Michael Wein ,  Marc Baur ,  Stefan Lehner ,  Stefan Huefner

IPC: F16D48/06 ,  B60K17/348 ,  B60K23/02 ,  F16D13/52

Abstract: 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.

公开(公告)号：US10464416B2

公开(公告)日：2019-11-05

申请号：US15553433

申请日：2016-02-18

Applicant: AUDI AG

Inventor： Christian Graf ,  Michael Bär ,  Michael Wein ,  Martin Arndt ,  Stefan Lehner ,  Marc Baur

IPC: F16D48/06 ,  B60K17/35

Abstract: 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.