Patent ID: 8540055

Claim:
An oil supplying apparatus for a vehicle, comprising: an engine driven mechanical oil pump; a hydraulic actuator operated by pressure of oil supplied from the engine driven mechanical oil pump to the hydraulic actuator; an engine lubrication device lubricating each member of the engine with the oil supplied from the engine driven mechanical oil pump; a priority flow valve selectively establishing priority flow and secondary flow conditions when a low oil pressure is working on the hydraulic actuator and when a high oil pressure is working on the hydraulic actuator, respectively, the priority flow condition allowing an oil supply from the engine driven mechanical oil pump to the hydraulic actuator with priority over an oil supply from the engine driven mechanical oil pump to the engine lubrication device, the secondary flow condition allowing the oil supply from the engine driven mechanical oil pump to the engine lubrication device; and wherein the priority flow valve is positioned between the engine driven mechanical oil pump and the hydraulic actuator so that the oil supplied from the engine driven mechanical oil pump flows through the priority flow valve before entering the hydraulic actuator, and the priority flow valve is configured to prevent residual oil remaining between the hydraulic actuator and the priority flow valve from escaping after the engine driven mechanical oil pump is stopped.