Fuel injection pumping apparatus

Details Fuel injection pumping apparatus Fuel injection pumping apparatus

1989-01-13

1990-06-26

Smith, Leonard E.

Pumps

With condition responsive pumped fluid control

Pressure responsive relief or bypass valve

417462, F02M 5902

Patent

active

049367552

ABSTRACT:
A rotary distributor fuel pumping apparatus for supplying fuel to an internal combustion engine has a pair of pumping plungers housed in a diametrical bore formed in the distributor member. The plungers at a predetermined position during their inward movement open a spill path to terminate delivery of fuel through an outlet. The one plunger defines a plunger bore and the other plunger has an integral piston slidable therein. The piston has a relieved portion adjacent the other plunger which with the wall of the plunger bore forms a flow path from the pumping chamber the flow path communicating with a port at a predetermined position during the inward movement. The pumping chamber is of annular form and is defined between the plungers and the wall of the bore in the distributor member and the piston.

REFERENCES:
patent: 3161138 (1964-12-01), Koster
patent: 4462368 (1984-07-01), Funada
patent: 4622942 (1986-11-01), Nozaki et al.

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