Fuel injection pumping apparatus

Details Fuel injection pumping apparatus Fuel injection pumping apparatus

1982-10-28

1984-09-11

Moy, Magdalen Y. C.

Internal-combustion engines

Charge forming device

With fuel pump

123501, 123198D, F02M 5920

Patent

active

044703970

ABSTRACT:
A fuel injection pumping apparatus has a high pressure pump to which fuel is supplied by a low pressure pump, the output pressure of which is controlled. The high pressure pump includes a piston which controls the timing of the high pressure pump. The pressure applied to the piston is controlled by valve means which includes a valve member biased by a spring. A solenoid is associated with an armature connected to the valve member and when the solenoid is energized the valve member is moved to increase the pressure applied to the piston. The valve member is also subjected to the fuel pressure developed by the low pressure pump and in the event that the flow of current in the solenoid ceases the valve member can move against the spring to allow a controlled pressure to be applied to the piston.

REFERENCES:
patent: 3665907 (1972-05-01), Laufer
patent: 3815564 (1974-06-01), Suda et al.
patent: 4342302 (1982-08-01), Straubel et al.
patent: 4359994 (1982-11-01), Hofer et al.
patent: 4393846 (1983-07-01), Mowbray et al.

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