Patent ID: 6595238
Filing Date: 2003-07-22
Classification: F02M,F04B,Y10T

Abstract:
A delivery valve of an internal combustion engine high-pressure fuel pump, comprising a delivery conduit communicating with a compression chamber of the pump, a shutter ball normally pushed by a helical compression spring to close a truncated-cone-shaped seat provided at an end of said conduit, a hole in said pump coaxial with said conduit and provided with a threaded portion, and a fastening member comprising a threaded portion screwing inside the treaded portion of said hole, wherein said fastening member is provided with a pin coaxial with said conduit for securing said spring, said pin being of such a length as to limit the travel of said ball to a predetermined value, said fastening member being also provided with a first shoulder adapted to be engaged by a first end of said helical spring, a second end of said spring comprises at least one small-diameter turn directly engaging said ball, said fastening member also having a cylindrical surface adjacent said first shoulder of said fastening member, said cylindrical surface, engaging in fluidtight manner, a corresponding cylindrical surface of said hole.