Electromagnetic fuel injection valve
AssigneesHitachi, Ltd., Hitachi Car Engineering Co., Ltd.
InventorsKiyotaka Ogura, Atsushi Sekine, Noriyuki Maekawa
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Abstract
An electromagnetic fuel injection valve comprises a movable unit having a valve element, an electromagnetic coil, and a magnetic circuit for magnetically attracting the movable unit toward a valve opening side through energization of the electromagnetic coil. The magnetic circuit is composed of a hollow, cylindrical stationary core, which defines a fuel passage extending axially through an injection valve body, a hollow seal ring made of a nonmagnetic or a feeble magnetic material, a hollow nozzle housing, and a movable core constituting a part of the movable unit. The stationary core and the nozzle housing are joined together through the seal ring. This electromagnetic fuel injection valve has improved responsibility.
Claims10
An electromagnetic fuel injection valve comprising:
- a movable unit having a valve element;
- an electromagnetic coil;
- a magnetic circuit for magnetically attracting the movable unit toward a valve opening side by energizing the electromagnetic coil, said magnetic circuit including a hollow, cylindrical stationary core defining a fuel passage extending axially through an injection valve body, a hollow seal ring made from one of a nonmagnetic material and a feeble magnetic material, a hollow nozzle housing, and a movable core constituting a part of the movable unit;
- and
- said stationary core and said nozzle housing being joined together through the seal ring.
Dependencies are inferred from the claim text.