Fuel injection systems

Details Fuel injection systems Fuel injection systems

1979-11-16

1981-11-17

Freeh, William L.

Pumps

Motor driven

Electric or magnetic motor

123467, F04B 1704

Patent

active

043008739

ABSTRACT:
A fuel injection system includes a pumping plunger contained in a cylinder and actuated in a direction to pump fuel from the cylinder by energization of an electromagnetic device including an armature. Stop means is provided to limit the movement of the armature when the device is energized and this includes a high rate spring constituted by a dished washer which is compressed by the armature during the final movement thereof. The washer is sufficiently strong to urge the armature in the opposite direction against the magnetic forces produced by the device, by an amount sufficient to bring about a reduction in the pressure in the cylinder.

REFERENCES:
patent: 2029780 (1936-02-01), Mazer et al.
patent: 2568757 (1951-09-01), Mesh
patent: 2576451 (1951-11-01), Dickson et al.
patent: 3753426 (1973-08-01), Lilley

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