Electro-magnetically operable valve

Details Electro-magnetically operable valve Electro-magnetically operable valve

1984-02-28

1986-04-29

Nase, Jeffrey V.

Fluid sprinkling, spraying, and diffusing

Fluid pressure responsive discharge modifier* or flow...

Fuel injector or burner

239585, 2395339, 23953311, 2511292, F02M 4702

Patent

active

045851743

ABSTRACT:
An electro-magnetically operable valve serving especially as fuel injection valve for a fuel injection device of internal combustion engines. The valve is composed of a valve housing, in which a magnetic coil is disposed around a core. The core has a concavely formed stop face against which, during excitation of the magnetic coil, a ball rests. The ball serves as an armature and movable valve part and cooperates with a fixed valve seat. The radius (r.sub.1) of the concavely formed stop face of the core is larger by about 0.1 to 1 mm than the radius (r.sub.2) of the ball. This causes a sufficient hydraulic cushion between the end face of the core and the ball when the ball is attracted toward the core upon magnetic energization of the latter and thus prevents a bouncing movement of the ball or its sticking to the core, when the ball is biased toward the valve seat upon de-energization of the core.

REFERENCES:
patent: 3737880 (1973-05-01), Williams
patent: 4434765 (1984-03-01), Eshelman

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