Claims:1. A high pressure fuel pump (10), said high pressure fuel pump (10) comprising:
10 a housing (12);
a barrel positioned within said housing (12);
a plunger adapted to reciprocate within said barrel and deliver pressurized fuel
from within said barrel to a fuel injector via a fuel delivery valve;
a control rod (14) secured to said plunger, said control rod (14) adapted to
15 rotate said plunger to facilitate controlling a quantity of pressurized fuel that is
delivered from said high pressure fuel pump (10);
a bell crank lever (16), an end of said bell crank lever (16) positioned against
said control rod (14), said bell crank lever (16) adapted to displace said control
rod (14) to facilitate controlling a quantity of pressurized fuel that is delivered
20 from said high pressure fuel pump (10); characterized in that
a lifting rod (18) secured to an end of said bell crank lever (16), said lifting rod
(18) adapted to rotate said bell crank lever (16) about a pivot (17) to facilitate
displacing said control rod (14), thereby controlling a quantity of pressurized
fuel that is delivered from said high pressure fuel pump (10), wherein the lifting
25 rod (18) comprises a plurality of gear teeth (20) that are defined on an outer
edge of said lifting rod (18); and
a gear (22) comprising a plurality of gear teeth (24) that are defined on its outer
circumference meshing with the plurality of gear teeth (20) that are defined on
the outer edge of said lifting rod (18), said gear (22) comprising the plurality
30 of gear teeth (24) that are defined on its outer circumference adapted to cause
said lifting rod (18) to reciprocate, thereby causing said bell crank lever (16)
to rotate about the pivot (17) to facilitate displacing said control 5 rod (14) to a
user required displacement.
2. The high pressure fuel pump (10) in accordance with Claim 1 further
comprising a stepper motor secured to said gear (22), said stepper motor
10 adapted to cause said gear (22) to rotate, thereby causing said lifting rod (18)
to reciprocate, thereby causing said bell crank lever (16) to rotate about the
pivot 17 to facilitate displacing said control rod (14) to the user required
displacement.
3. The high pressure fuel pump (10) in accordance with Claim 2 further
comprising an engine control unit in electronic communication with said
stepper motor, said engine control unit adapted to transmit a signal to said
stepper motor secured to said gear (22) to rotate said gear (22) to the user
required displacement, thereby causing said lifting rod (18) to reciprocate to
20 the user required displacement, thereby causing said bell crank lever (16) to
rotate about the pivot 17 to facilitate displacing said control rod (14) to the user
required displacement. , Description:A high pressure fuel pump 10 is described. The high pressure fuel pump 10 comprises
a housing 12. A plunger is adapted to reciprocate within a barrel of the housing. A
control rod 14 is secured to the plunger. A bell crank lever 16 is positioned against the
10 control rod 14. A lifting rod 18 is secured to the bell crank lever 16. The lifting rod 18
comprises gear teeth 20 that are defined on its outer edge. A gear 22 comprising gear
teeth 24 that are defined on its outer circumference meshes with the plurality of gear
teeth 20 that are defined on the outer edge of the lifting rod 18. The gear 22 is adapted
to cause the lifting rod 18 to reciprocate thereby causing the bell crank lever 16 to
15 rotate about the pivot 17 to facilitate displacing the control rod 14 to a user required
displacement.