Fuel pumping apparatus

Details Fuel pumping apparatus Fuel pumping apparatus

1987-07-30

1988-04-19

Smith, Leonard E.

Pumps

Successive stages

With interstage discharge or additional discharge from...

418267, 123511, F04B 2102, F04B 2500, F04C 1502

Patent

active

047385960

ABSTRACT:
A fuel pumping apparatus for supplying fuel to a compression ignition engine includes a high pressure pump to which fuel is supplied from the outlet of a low pressure pump of the vane type. The vanes of the pump are mounted in slots in the pump rotor and are spring biased outwardly. A cavity defined by the inner ends of the slots is connected by a spring loaded valve to the outlet when the output pressure is above a predetermined value and to a space in the housing of the apparatus through a valve when the output pressure is below said value. The space contains fuel which accumulates during the operation of the apparatus.

REFERENCES:
patent: 2708884 (1955-05-01), Deschamps
patent: 3181468 (1965-05-01), Roosa
patent: 4543049 (1985-09-01), Shibuya
patent: 4610614 (1986-09-01), Haga et al.

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