Patent ID: 9353692
Filing Date: 2016-05-31
CPC Classification: B60K,B60W,B60Y,F02D,F16H,Y02T

Claim Text:
1. A method for starting-up a hybrid powertrain comprising an engine, an over-running clutch coupled to the engine, an electric oil pump motor coupled to the over-running clutch, and an oil pump coupled to the electric oil pump motor, the method comprising: in response to a vehicle start-up command from a vehicle operator, evaluating whether predetermined conditions for a casual start are satisfied, the casual start involving only the electric oil pump motor powering the oil pump to generate a desired oil pressure within a desired start-up time period, the predetermined conditions including oil temperature, and the desired oil pressure being for operation of a transmission of the hybrid powertrain; starting the engine when the predetermined conditions are not satisfied; and activating the electric oil pump motor for the casual start without activating the engine when the predetermined conditions are satisfied.