Fuel pumping apparatus

Details Fuel pumping apparatus Fuel pumping apparatus

1981-10-08

1983-07-12

Freeh, William L.

Pumps

Expansible chamber type

Moving cylinder

F04B 1922, F04B 2900

Patent

active

043927939

ABSTRACT:
A fuel pumping apparatus of the rotary distributor type has cam followers comprising rollers supported by shoes interposed between the pumping plungers and the cam ring. Stop rings are provided to limit the outward movement of the followers and one of these rings is axially adjustable so that the amount of fuel supplied by the apparatus can be controlled. In order to provide reduced initial rate of injection of fuel the axial spacing of the surfaces on at least one of the followers which contact the stop rings, is smaller than in the case of the other plunger or plungers so that at the end of the filling stroke of the apparatus of the plunger associated with that follower will project outwardly further than the other plunger and hence will be moved inwardly before the other to provide delivery of fuel at a reduced rate.

REFERENCES:
patent: 3883270 (1975-05-01), Baxter
patent: 4067304 (1978-01-01), Potter

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