Electromagnetic fuel injection valve

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.

Dependencies are inferred from the claim text.