Patent ID: 7032379

Claim:
An oil supply unit for a running power transmission of a vehicle comprising: a housing for accommodating a power transmission mechanism which has a power transmission portion and an output portion and in which a driving force from the engine is transmitted to the output portion through the power transmission portion, at least a part of an inside space of the housing being an oil reservoir space; a hydraulic pump of a variable displacement type, operatively connected to the engine and including a suction port fluid-connected to the oil reservoir space, a discharge port fluid-connected to the power transmission portion and an output adjusting member, a discharge quantity against a suction quantity of the pump being variable based on operation of the output adjusting member; a detecting mechanism for monitoring a driven state of the engine; and a control mechanism for operating the output adjusting member to thereby regulate the discharge quantity against the suction quantity of the hydraulic pump of the variable displacement type based on the driven state of the engine.