Vane type rotary fuel pump

Details Vane type rotary fuel pump Vane type rotary fuel pump

1988-03-11

1989-09-26

Smith, Leonard E.

Pumps

Diverse pumps

Series

417435, 418 15, F04B 2100

Patent

active

048696480

ABSTRACT:
A fuel pumping apparatus includes a high pressure pump and a low pressure pump contained in a housing and driven by a drive shaft which is coupled to a rotary part of an internal combustion engine. The low pressure pump is a vane pump having a rotor in which is formed a plurality of outwardly extending slots which accommodate outwardly spring loaded vanes. The edges of the vanes engage an eccentrically disposed surface formed on a stator. The pump has end plates and inlet and outlet ports communicating with the space defined between said surface and the outer surface of the rotor. The outer edges of each vane are formed with grooves which extend along the edges and the grooves communicate by way of passages with the inner ends of the respective slots. Side plates are disposed at the opposite ends of the rotor and one of the side plates has an opening which is positioned after the inlet port in the direction of rotation of the rotor, the opening being positioned below the normal level of fuel in the housing and communicating in turn with the inner ends of the slots.

REFERENCES:
patent: 3790314 (1974-02-01), Swain et al.
patent: 4242068 (1980-12-01), Shaw
patent: 4309151 (1982-01-01), Craven
patent: 4455126 (1984-06-01), Brotherston
patent: 4672937 (1987-06-01), Fales et al.

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