Patent ID: 7806800
Filing Date: 2010-10-05
Classification: B60K,B60W,F16H,Y02T,Y10S,Y10T

Abstract:
1. A method for operating a drive train of a motor vehicle, including at least a first electric drive train motor ( 2 ) and an oil pump ( 4 ) for supplying shift elements with pressurized oil, the drive train comprising an electric pump motor ( 5 ) engageable with the oil pump for driving the oil pump ( 4 ), and the first electric drive train motor ( 2 ) of the motor vehicle drive train including a self-actuating clutch ( 11 ) for also engaging the first electric drive train motor ( 2 ) with the oil pump ( 4 ), the method comprising the steps of: first, energizing one of the first electric drive train motor ( 2 ) and the electric pump motor ( 5 ) and, also energizing the other one of the electric motors for assisting starting operation of the oil pump ( 4 ).