Chamber-controlled fuel injection pump for internal combustion e

Details Chamber-controlled fuel injection pump for internal combustion e Chamber-controlled fuel injection pump for internal combustion e

1978-05-15

1979-10-30

Croyle, Carlton R.

Pumps

Expansible chamber type

Pumping member position controlled port

123139AD, F02M 5926

Patent

active

041726995

ABSTRACT:
A fuel injection pump for internal combustion engines, which has improved and simplified means for a throttled preliminary shut-off to prevent cavitation in the injection system and late injections by the fuel injection valves. The pump piston is provided with two recesses that terminate in chamfered control edges and control the end of the delivery cycle and also contains a throttle bore, which has a cross bore, and connects the first recess, which is opened shortly before the other recess, with the pump operating chamber by means of a longitudinal bore in the pump piston. The second recess has an unthrottled connection to the pump operating chamber.

REFERENCES:
patent: 2384011 (1945-09-01), Bremser
patent: 3368491 (1968-02-01), Shook et al.
patent: 4118156 (1978-10-01), Ivosevic

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