Patent ID: 7793749
Filing Date: 2010-09-14
Classification: B60K,B60W

Abstract:
1. A method of operating a drive train ( 1 ) of a vehicle with a drive engine ( 2 ), a brake system ( 9 ), and at least driven first and second cross-shafts ( 61 , 62 ) of a first vehicle axle ( 6 ) with at least two wheels ( 6 A, 6 B), a transverse distributor gear ( 5 ) being driven by the engine ( 2 ) and the distributor gear ( 5 ) having first and second outputs, the first cross shaft ( 61 ) being connected to the first output of the distributor gear ( 5 ) and the second cross shaft ( 62 ) being connected to the second output of the distributor gear ( 5 ) such that the first and the second cross-shafts are actively connected to one another, the drive train ( 1 ) also having a second vehicle axle ( 7 ) with at least two wheels ( 7 A, 7 B), respective frictional shift elements (k_HA_L, k_HA_R) are provided, between the respective wheels ( 6 A, 6 B) of the first vehicle axle ( 6 ) and the respective first and the second outputs of the transverse distributor gear ( 5 ) for variable distribution of a fraction of a drive torque (m_mot) from the engine ( 2 ) in a transverse direction of the vehicle between the two wheels ( 6 A, 6 B) of the first vehicle axle ( 6 ), the frictional shift elements (k_HA_L, k_HA_R) being independent of each other and of the transverse distributor gear ( 5 ), the method comprising the steps of: determining a desired yaw torque (mg_soll); controlling the shift elements (k_HA_L, k_HA_R) to adjust the yaw torque to the desired yaw torque; and controlling the drive engine (