Patent ID: 6805103
Filing Date: 2004-10-19
Classification: F02B,F02M,Y02T

Abstract:
A cylinder-injection fuel injection valve comprising:a housing main body; a valve assembly within said housing main body, and comprising: a unitary valve main body having a large-diameter cylinder portion and a small diameter cylinder portion; a shoulder portion defined between said large-diameter and said small diameter cylinder portions; a valve seat having a fuel injection aperture secured within said valve main body; and a valve body moved into and out of contact with said valve seat to close and open said fuel injection aperture; a seal for preventing combustion gas in a cylinder from leaking to said housing main body wherein said seal is held between a cylinder head and said shoulder portion when said valve assembly is inserted into an insertion port in said cylinder; and a securing means for securing said valve main body to said housing main body, said securing means fastening the outer circumferential side of said large-diameter cylinder portion and an engaging portion formed on said housing main body.