Fuel injection quantity adjustment apparatus for fuel injection

Details Fuel injection quantity adjustment apparatus for fuel injection Fuel injection quantity adjustment apparatus for fuel injection

1982-09-30

1985-07-02

Miller, Carl Stuart

Internal-combustion engines

Engine speed regulator

Having condition responsive means with engine being part of...

103449, 103198D, 417289, F02M 5920

Patent

active

045261458

ABSTRACT:
A pair of solenoids are disposed coaxially with and around a hollow cylindrical cut-off valve. The valve includes an inner non-magnetic sleeve and an outer permanent magnet sleeve. The cut-off valve slidably engages a fuel distributing plunger which injects fuel according to its axial reciprocation. The cut-off valve controls fuel injection quantity via timing of exposure of a fuel injection cut-off port in the plunger. When the pair of solenoids are energized in accordance with operating parameters of the engine, the cut-off valve is moved to a corresponding position along the plunger. A sensor senses the actual position of the cut-off valve for feedback control thereof. A pair of disc-like permanent magnets may be disposed opposite either extreme of travel of the cut-off valve in spaced relationship thereto. A pair of non-magnetic discs may be disposed in place of the pair of disc-like permanent magnets. A biasing member may be disposed between the cut-off valve and the plunger housing to prevent the cut-off valve from being attracted by the plunger housing and for preventing rotation of the cut-off valve relative to the plunger housing. The biasing member may be diaphragm, coil spring or a leaf spring.

REFERENCES:
patent: 3333542 (1967-08-01), Eheim
patent: 3630643 (1971-12-01), Eheim et al.
patent: 4036193 (1977-07-01), Kobayashi et al.
patent: 4050856 (1977-09-01), Kobayashi et al.
patent: 4391257 (1983-07-01), Eheim
patent: 4395905 (1983-08-01), Fujimori
patent: 4407245 (1983-10-01), Eheim

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