Fuel pumping apparatus

Details Fuel pumping apparatus Fuel pumping apparatus

1990-02-15

1992-01-14

Bertsch, Richard A.

Pumps

Expansible chamber type

Moving cylinder

417463, F04B 1902

Patent

active

050805630

ABSTRACT:
A fuel pumping apparatus of the rotary distributor type includes a main pumping plunger and an auxiliary plunger operable at the same time by a cam. During inward movement fuel is displaced by the pumping plunger to an outlet. The auxiliary plunger displaces fuel to a shuttle bore containing a shuttle and during the initial inward movement a first flow path to drain from the bore containing the pumping plunger is open but this is closed upon further movement of the shuttle until a second flow path is opened. The second flow path includes a groove having an inclined edge so that the angular setting of the shuttle determines the amount of fuel supplied through the outlet. A valve is also provided to allow fuel displaced by the auxiliary plunger to flow to a drain.

REFERENCES:
patent: 4173959 (1979-11-01), Sosnowski et al.
patent: 4299542 (1981-11-01), Potter et al.
patent: 4310291 (1982-01-01), Green et al.
patent: 4381182 (1983-04-01), Broodwith
patent: 4463727 (1984-08-01), Babitzka et al.
patent: 4531488 (1985-07-01), Kawamura et al.
patent: 4531491 (1985-07-01), Iiyama et al.
patent: 4759694 (1988-07-01), Thornthwaite et al.
patent: 4764092 (1988-08-01), Thornthwaite
patent: 4913632 (1990-04-01), Thornthwaite
patent: 4920940 (1990-05-01), Harris et al.
patent: 4936755 (1990-06-01), Greeves et al.

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