Patent ID: 6526932
Filing Date: 2003-03-04
Classification: F01L

Abstract:
A combination intake and exhaust valve assembly for use in controlling flow to and from a combustion chamber of an internal combustion engine, said valve assembly comprising an intake valve having a head portion that includes an annular rim portion movable into and out of engagement with an annular intake valve seat defined by a portion of a cylinder head of the internal combustion engine that at least partially overlaps said annular rim portion of said intake valve to control flow into the combustion chamber of the internal combustion engine during operation of the internal combustion engine and an annular exhaust valve seat circumscribed by said annular rim portion and at least partially defining an exhaust valve seat, and an exhaust valve having an annular rim portion movable into and out of engagement with said exhaust valve seat in said intake valve to control flow from the combustion chamber of the internal combustion engine during operation of the internal combustion engine.