Fuel pump

Details Fuel pump Fuel pump

1988-07-22

1990-06-05

Smith, Leonard E.

Pumps

Expansible chamber type

Moving cylinder

123450, F04B 1922

Patent

active

049309986

ABSTRACT:
A rotary distributor type fuel injection pump has a pair of angularly adjustable stop rings having shaped internal surfaces which can engage with the cam followers of the pump to limit the outward movement of the pump plungers. The stop rings are interconnected by a saddle member and a spring biases the saddle member into engagement with a stop. The stop which may be adjustable determines the normal maximum amount of fuel which can be supplied by the pump. For starting purposes the stop rings are moved to an excess fuel position which is achieved by a pin engaged in a slot in one of the rings. The pin is spring biased to move the one end and hence the other ring to an excess fuel position and is coupled to a fluid pressure operable piston which when the associated engine is started is moved by fluid pressure to move the pin to allow the spring to move the saddle member and stop into engagement with the stop.

REFERENCES:
patent: 4358256 (1982-11-01), Jefferson
patent: 4362140 (1982-12-01), Jefferson et al.
patent: 4422425 (1983-12-01), Jefferson

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