Patent ID: 7056260
Filing Date: 2006-06-06
Classification: B60K,B60W,F16H,Y02T,Y10T

Abstract:
1. A drive unit for a vehicle comprising a first motor, power distributing means, a second motor, and a stepped speed change gear having frictional engaging means, wherein an engine driving force transmitted to an input shaft is distributed and transmitted to the first motor and an output section by the power distributing means, and the second motor is operated in association with the output section through the stepped speed change gear for performing a speed changing operation in accordance with the operation of the frictional engaging means, and an engine is started on the basis of the driving of the first motor, the drive unit further comprises: engine driving control means for driving the first motor on the basis of an engine driving signal, and driving the second motor so as to restrain a reaction force in the power distributing means due to the driving of the first motor in a state in which the stepped speed change gear connects the second motor and the output section by the frictional engaging means; an electrically operated oil pump for generating an operating oil pressure of the frictional engaging means; and an electrically operated pump control section having pump operation control means for operating the electrically operated oil pump prior to the control of the engine driving control means on the basis of an engine starting signal outputted in a vehicle stopped state.