Valves and valve actuation – Electrically actuated valve – Having means to produce proportional flow
Patent
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.
Nippondenso Co. Ltd.
Rosenthal Arnold
LandOfFree
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