Claims:1. A high pressure fuel pump (10), said high pressure fuel pump (10) comprising:
10 a housing (12), said housing (12) comprising a substantially flat shaped end
face portion (14);
a first bore (16) defined through said flat shaped end face portion (14) and
adapted to release fuel on said flat shaped end face portion (14);
a second bore (18) defined through said flat shaped end face portion (14), said
15 second bore (18) adapted to channel fuel that is released on said flat shaped
end face portion (14) from the first bore (16); characterized in that
a circumferential groove (20) defined between the first bore (16) and the
second bore (18), the circumferential groove (20) adapted to channel
pressurized fuel from the first bore (16) defined through said flat shaped end
20 face portion (14) to the second bore (18) defined through said flat shaped end
face portion (14).
2. The high pressure fuel pump (10) in accordance with Claim 1 further
comprising a gear pump positioned against said housing (12) of said high
25 pressure fuel pump (10), the circumferential groove (20) defined between the
first bore (16) and the second bore (18) adapted to minimize the surface area
of contact between said gear pump and said housing (12) of said high pressure
fuel pump (10) when said gear pump compresses against 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. The housing 12 comprises a substantially flat shaped end face portion
14. A first bore 16 is defined through the flat shaped end face portion 14 and adapted
10 to release fuel on the flat shaped end face portion 14. A second bore 18 is defined
through the flat shaped end face portion 14, the second bore 18 adapted to channel fuel
that is released on the flat shaped end face portion 14 from the first bore 16. A
circumferential groove 20 is defined between the first bore 16 and the second bore 18.
The circumferential groove 20 is adapted to channel pressurized fuel from the first
15 bore 16 defined through the flat shaped end face portion 14 to the second bore 18
defined through the flat shaped end face portion 14.