VALVE STRUCTURE FOR INTAKE MANIFOLD

摘要

The purpose of the present invention is to provide a valve structure for an intake manifold improving a structure of a VIS valve installed in the port side of an intake manifold and seals airtightly when the VIS valve is closed to improve an engine output. To achieve the above purpose, the valve structure for an intake manifold is comprised of one or more flaps installed to a port of the intake manifold to open and close an air suction hole, and a rotational shaft which rotates the flaps to enhance the engine output in all the driving ranges from a low velocity to a high velocity through an opening and closing movement of the flaps. Moreover, the valve structure for an intake manifold has flap sealing parts outside the flaps, and the flap sealing parts are closely attached inside the port of the intake manifold when closing the air suction hole.