Claims:1. A high pressure fuel pump (10), said high pressure fuel pump (10) comprising:
a housing (12); characterized in that
an elliptically shaped bore (14) defined in said housing (12) of said high
pressure fuel pump (10), the elliptically shaped bore (14) adapted to receive an
elliptically shaped roller tappet (16) therein.
2. The high pressure fuel pump (10) in accordance with Claim 1 wherein said
elliptically shaped roller tappet (16) is positioned within the elliptically shaped
bore (14) defined in said housing (12) of said high pressure fuel pump (10)
such that the elliptically shaped bore (14) prevents a rotation of said elliptical
roller tappet (16), thereby securing an orientation of said elliptically shaped
roller tappet (16) within the elliptically shaped bore (14) defined in said
housing (12) of said high pressure fuel pump (10).
3. The high pressure fuel pump (10) in accordance with Claim 1 further
comprising an elliptically shaped roller shoe (18) inserted within an elliptically
25 shaped bore (20) defined in said elliptically shaped roller tappet (16), the
elliptically shaped bore (20) defined in said elliptically shaped roller tappet
(16) adapted to prevent a rotation of said elliptically shaped roller shoe (18)
within the elliptically shaped bore (20) defined in said elliptically shaped roller
tappet (16).
4. The high pressure fuel pump (10) in accordance with Claim 1 wherein a major
axis (22) of said elliptically shaped roller tappet (16) is aligned with a major
axis (24) of the elliptically shaped bore (14), and wherein a 5 minor axis (26) of
said elliptically shaped roller tappet (16) is aligned with a minor axis (28) of
the elliptically shaped bore (14) to prevent a rotation of said elliptically shaped
roller tappet (16) within the elliptically shaped bore (14) defined in said
housing (12) of said high pressure fuel pump (10). , Description:A high pressure fuel pump 10 is described. The high pressure fuel pump 10 comprises
a housing 12. An elliptically shaped bore 14 is defined in the housing 12. The
elliptically shaped bore 14 is adapted to receive an elliptically shaped roller tappet 16
10 therein. The elliptically shaped roller tappet 16 is positioned within the elliptically
shaped bore 14 such that the elliptically shaped bore 14 prevents a rotation of the
elliptically shaped roller tappet 16. Therefore, an orientation of the elliptically shaped
roller tappet 16 within the elliptically shaped bore 14 defined in the housing 12 is
secured. An elliptically shaped roller shoe 18 is inserted within an elliptically shaped
15 bore 20 defined in the elliptically shaped roller tappet 16 to prevent a rotation of the
elliptically shaped roller shoe 18 within the elliptically shaped bore 20 defined in the
elliptically shaped roller tappet 16.