Distributor type fuel-injection pump for distributing fuel to cy

Details Distributor type fuel-injection pump for distributing fuel to cy Distributor type fuel-injection pump for distributing fuel to cy

1983-12-22

1985-02-19

Moy, Magdalen Y. C.

Internal-combustion engines

Charge forming device

With fuel pump

123450, 123500, 417289, F04B 1900

Patent

active

044998830

ABSTRACT:
A distributor type fuel-injection pump according to the present invention is provided with a rotor which is rotated by an engine. The rotor has a pair of plungers slidable in the radial direction of the rotor, and a fuel pumping chamber is defined between the plungers. The rotor is surrounded by a cam ring which reciprocates the plungers as the rotor rotates, thereby sucking fuel into the fuel pumping chamber and pressurizing the fuel therein. The fuel pressurized in the fuel pumping chamber is distributed to individual cylinders of the engine. A plurality of spill holes are formed in the rotor, communicating with the fuel pumping chamber and opening to the outer peripheral surface of the rotor. A control sleeve to open and close the spill holes is axially slidably fitted on the rotor. First and second spill grooves capable of communicating with the spill holes are formed on the inner peripheral surface of the control sleeve. The first and second spill grooves open or close the spill holes to define the timing for the start of fuel delivery in the fuel pumping chamber and the timing for the end of fuel delivery, thereby determining the amount of fuel delivery.

REFERENCES:
patent: 2813523 (1957-11-01), Bischoff
patent: 2935062 (1960-05-01), Aldinger et al.
patent: 3752138 (1973-08-01), Gaines
patent: 4362141 (1982-12-01), Mowbray
patent: 4367714 (1983-01-01), Di Domenico et al.
patent: 4441474 (1984-04-01), Garrett et al.

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