Pumps – Diverse pumps – Series
Patent
1974-04-09
1976-02-03
Vrablik, John J.
Pumps
Diverse pumps
Series
417252, 417253, 417462, 123139AQ, F04B 2312, F04B 1902, F04B 300
Patent
active
039362329
ABSTRACT:
The invention relates to a fuel injection pumping apparatus which includes a feed pump the output pressure of which is controlled by valve. The feed pump supplies fuel to an injection pump under the control of a shuttle which is movable in a bore. The extent of movement of the shuttle determines the amount of fuel supplied by the injection pump to the associated engine. In addition, a fluid pressure operable device is provided to control the timing of injection of fuel to the engine, and the pressure for controlling the device is obtained from a point intermediate a fixed restrictor and a variable restrictor constituted by a groove formed in the shuttle and a port formed in wall of the bore accommodating the shuttle. Fuel from the outlet of the pump flows through the fixed and variable restrictors.
REFERENCES:
patent: 3439624 (1969-04-01), Glikin et al.
patent: 3536421 (1970-10-01), Kemp
C.A.V. Limited
Vrablik John J.
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