Electromagnetically-operated fuel injection valve

Details Electromagnetically-operated fuel injection valve Electromagnetically-operated fuel injection valve

1985-11-18

1987-06-30

Rosenthal, Arnold

Valves and valve actuation

Electrically actuated valve

Having means to produce proportional flow

25112915, 25112921, 123472, 335227, 239585, F16K 3106

Patent

active

046764780

ABSTRACT:
An electromagnetically-operated fuel injection valve has a magnetic circuit comprising a valve casing, a stator core on which an electromagnetic coil is wound, an armature core, and an air gap between the stator core and the armature core. At least one of the valve casing, the stator core and the armature core is so configuared that the magnetic flux passing therethrough is saturated substantially at the time the armature core is fully attracted to inject fuel. A magnetic restrictor at which the cross-sectional area for the magnetic flux is reduced than that at the other portion is provided at least at a portion of the valve casing, the stator core and the armature core so that the magnetic flux is saturated thereat substantially at the time the armature core is attracted fully.

REFERENCES:
patent: 2853659 (1958-09-01), Herion
patent: 3071714 (1963-01-01), Hadekel
patent: 3820757 (1974-06-01), Siebel
patent: 4331317 (1982-05-01), Kamai et al.
patent: 4419642 (1983-12-01), Kramer et al.

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