Patent ID: 9657831
Date: 2017-05-23
CPC Classifications: B60K,B60W,B60Y,F16H,Y02T,Y10S

Claim:
1. A method for cooling a driveline, comprising: operating an electric pump to supply transmission clutches transmission fluid when an engine and an electric machine are stopped, where the electric machine is mechanically coupled to a transmission that includes the transmission clutches; supplying transmission fluid to the electric machine from the electric pump via adjusting a valve to a first position in response to an electric machine temperature exceeding a threshold; adjusting the valve to a second position in response to the electric machine temperature being less than the threshold; and supplying transmission fluid to the electric machine from the electric pump via adjusting the valve to the first position in further response to a current of the electric machine exceeding a threshold for more than a predetermined amount of time.