Fuel injection pump

Details Fuel injection pump Fuel injection pump

1996-12-03

1998-10-20

Moulis, Thomas N.

Internal-combustion engines

Charge forming device

With fuel pump

123500, F02M 5926

Patent

active

058231684

ABSTRACT:
The fuel injection pump does not generate an excessively large drive torque at the end of the fuel injection under the condition of the most advanced injection timing, even if a geometric injection rate (GIR) is raised to shorten an injection period. The fuel injection pump includes a sleeve (4), a plunger (1) movably received in the sleeve (4), a cam (2') for moving the plunger up and down in the longitudinal direction of the sleeve. The sleeve is shiftable relative to the plunger in the longitudinal direction of the plunger to delay or advance an injection timing and to use different portions of the cam from start (22) to end (23) of fuel injection. The cam (2') has a unique configuration to insure that when the sleeve is shifted downward and the fuel. injection timing is most advanced, the GIR drops from the start of the injection to the end.

REFERENCES:
patent: 2591401 (1952-05-01), Camner
patent: 4737086 (1988-04-01), Yamaguchi et al.
patent: 4754737 (1988-07-01), Ishida et al.
patent: 4836170 (1989-06-01), Hafele
patent: 5211549 (1993-05-01), Kraemer
patent: 5315978 (1994-05-01), Ishida
patent: 5592915 (1997-01-01), Ishiwata et al.

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