Patent ID: 7069887
Filing Date: 2006-07-04
Classification: F01L,F02B,Y02T

Abstract:
1. An engine valve actuation system, comprising: an intake valve moveable between a first position to prevent a flow of fluid and a second position to allow a flow of fluid; a cam assembly mechanically connected to the intake valve to move the intake valve between the first position and the second position; a fluid actuator configured to selectively prevent the intake valve from moving to the first position; a fluid rail having a first end and a second end, the fluid rail configured to supply fluid to the fluid actuator; a directional control valve selectively controllable to move between a first position to prevent a flow of fluid from the fluid rail to the fluid actuator and a second position to allow a flow of fluid from the fluid rail to the fluid actuator; a source of fluid in fluid communication with the first end of the fluid rail; and a control valve in fluid connection with the second end of the fluid rail, the control valve being selectively controllable to move between a first position to prevent a flow of fluid from the fluid rail and a second position to allow the flow of fluid from the fluid rail.