Patent ID: 7311087
Filing Date: 2007-12-25
Classification: F01L,F02M,F04B

Abstract:
1. A fuel pump for an internal combustion engine comprising: a fuel pump housing; a cylindrical bore provided in said fuel pump housing, said cylindrical bore having a central axis, and being at least partially defined by a bore wall surface of said fuel pump housing; a receiving hole formed in said fuel pump housing, said receiving hole being open to said cylindrical bore; a tappet assembly received in said cylindrical bore, said tappet assembly including an outer peripheral surface with an elongated key slot longitudinally extending parallel to said central axis of said cylindrical bore; and a guide key partially received in said receiving hole and including a head that extends into said cylindrical bore to engage said elongated key slot of said tappet assembly, said head having an outer dimension along said central axis of said cylindrical bore that is larger than a dimension of said receiving hole along said central axis.