Patent ID: 6591804
Filing Date: 2003-07-15
Classification: F02B,Y02T

Abstract:
A variable intake apparatus for a multi-cylinder internal combustion engine including an intake manifold, said apparatus comprising:an intake air collecting chamber; an air intake passageway including a pair of air intake passageway portions communicating the intake air collecting chamber with respective cylinders; a first partition wall, which has an opening, provided between the intake air collecting chamber and one of the air intake passageway portions; and an intake air control valve integrally providing a plurality of valve bodies disposed in the opening, wherein the intake air control valve controls to open and close said one of the air intake passageway portions with one of the valve bodies, and to open and close the opening in the first partition wall with the other of the valve bodies; and wherein said pair of air intake passageway portions include an outer circumferential side main air intake passageway and an inner circumferential side main air intake passageway.