Liquid fuel pumping apparatus

Details Liquid fuel pumping apparatus Liquid fuel pumping apparatus

1979-11-28

1982-04-20

Freeh, William L.

Pumps

Diverse pumps

Series

417251, 417462, 123450, F04B 2310, F04B 2312

Patent

active

043256767

ABSTRACT:
A fuel pumping apparatus includes an injection pump which is supplied with fuel through a passage from a feed pump. A throttle member having a groove is angularly adjustable to determine the rate of fuel flow. For this purpose the groove has variable communication with a port at the end of the passage. The throttle member has a further groove which when the throttle is closed to prevent fuel flow to the injection pump, places the port in communication with a further port connected to a low pressure. This allows fuel to be expelled from the injection pump so that delivery of small amounts of fuel to the engine does not occur when the throttle is closed.

REFERENCES:
patent: 2641238 (1953-09-01), Roosa
patent: 2989003 (1961-06-01), Evans
patent: 3292546 (1966-12-01), Evans
patent: 3363568 (1968-01-01), Evans
patent: 3421444 (1969-01-01), Hutcheon et al.
patent: 3427979 (1969-02-01), Kemp
patent: 3439624 (1969-04-01), Gliken et al.
patent: 3460479 (1969-08-01), Kemp

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