Fuel pump assembly

Details Fuel pump assembly Fuel pump assembly

1979-05-15

1981-03-31

Goldstein, Herbert

Rotary expansible chamber devices

Grooved abutting cylinder-rotating member end surfaces

Groove communicates with vane slot

418267, F01C 200

Patent

active

042590442

ABSTRACT:
A pump for pumping low viscosity fuels has a cam defining a pumping chamber bore wall. A plurality of slippers define pumping pockets located within the bore wall. The slippers are rotated through inlet arcs and through outlet arcs. A pair of orifices of predetermined diameter are located in the respective inlet arcs and communicate with each pumping pocket at a location radially inwardly of the slippers. Each orifice is circular in cross-section and has a diameter within the range of 0.067 inches to 0.076 inches. Each orifice diameter is such that pump noise restricted and the pump has a relatively high inlet vacuum.

REFERENCES:
patent: 2357334 (1944-09-01), Kendrich
patent: 2853023 (1958-09-01), English
patent: 2955542 (1960-10-01), Gaubatz
patent: 3045648 (1962-07-01), Belau et al.
patent: 3052189 (1962-09-01), Head
patent: 3797977 (1974-03-01), Carlson
patent: 3953153 (1976-04-01), Huber et al.
patent: 4080124 (1978-03-01), Drutchas

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