Fuel injection pump for internal combustion engines

Details Fuel injection pump for internal combustion engines Fuel injection pump for internal combustion engines

1992-07-22

1993-07-06

Bertsch, Richard A.

Pumps

Expansible chamber type

Pumping member position controlled port

417500, 123501, 123503, F04B 704

Patent

active

052248461

ABSTRACT:
A fuel injection pump for internal combustion engines, having a reciprocating pump piston that is guided in a cylinder liner, having a control slide that is axially displaceable on the pump piston, inside a lateral recess of the cylinder liner, and is moved via an adjusting shaft that is located in a transverse conduit disposed in a pump housing transversely to the cylinder axis. The transverse conduit intersects the housing bore that receives the cylinder liner in the region of a recess that form a partial suction chamber, forming a through opening for a lever of the control slide, and it also serves to drain fluid from the partial suction chamber. For hydraulic reasons, this through opening is embodied according to the invention by means of machining from the housing bore in tub-like fashion, and the control slide is also flattened, adapting to the enlargement, so that the high kinetic energy of the fuel stream emerging from the diversion bore and of the fuel flowing out to the transverse bore can be rapidly lowered.

REFERENCES:
patent: 4737086 (1988-04-01), Yamaguchi et al.
patent: 4770149 (1988-09-01), Kramer et al.
patent: 5080564 (1992-01-01), Kasahara et al.

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