VALVETRAIN OIL CONTROL SYSTEM AND OIL CONTROL VALVE

摘要

A hydraulic control system (10) is provided having an oil control valve (20) to control oil flow within a valvetrain. The control valve (20) varies the flow rate to actuate an engine component (16A) from a first position to a second position based upon the pressure of fluid from the control valve (20). Varying the flow rate through the control valve (20) includes increasing the flow rate through the control valve (20) to increase the pressure to a first level to actuate the engine component (16A) to the first position. After the engine component (16A) is actuated, the flow rate through the control valve (20) is maintained at a level sufficient to maintain the engine component (16A) in the first position. To actuate the engine component (16A) to the second position the flow rate through the control valve (20) is then decreased. The fluid flow rate through the control valve (20) is then maintained at a level sufficient to maintain the engine component (16A) in the second position.