Patent ID: 9211788
Filing Date: 2015-12-15
Classification: B60K,B60L,B60W,Y02T

Abstract:
1. A method for diagnosing an operating status of at least one drive device in a motor vehicle having two drive devices configured as an electric machine and an internal combustion engine, and at least one separating clutch configured to adjustably couple the two drive devices, the method comprising: setting setpoint rotational speeds of the two drive devices to predetermined setpoint values; determining the operating status of the at least one drive device by evaluating a relative rotational speed difference in between the actual rotational speeds of the electric machine and the internal combustion engine; and setting a holding torque of the separating clutch in such a way that (i) no slipping of the separating clutch occurs in the event of equal rotational speeds between the two drive devices, and (ii) slipping occurs in the event of different rotational speeds between the two drive devices.