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AssigneeHitachi Automotive Systems, Ltd.
InventorsAkiyasu Miyamoto, Motoyuki Abe, Yoshihito Yasukawa, Takao Miyake, Akira Iizuka, Kiyotaka Ogura
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An object of the present invention is to provide a fuel injection valve configured to suppress bouncing of a valve element that is caused as a result of the valve element being rendered elastic when the valve element collides with a valve seat. The fuel injection valve of the present invention includes the valve element configured to come into contact with the valve seat for closing an injection hole and to separate from the valve seat for unclosing the injection hole, an elastic member urging the valve element toward the valve seat, a movable iron core disposed to be in and out of contact with the valve element, a fixed iron core disposed to be opposed to the movable iron core, and a coil configured to generate electromagnetic force for moving the movable iron core. At least one lower rigidity part having reduced rigidity per axial unit length is provided between a surface where urging force of the elastic member is transmitted to the valve element and a seat part whereat the valve element comes into contact with and separates from the valve seat.
A fuel injection valve comprising a valve element configured to come into contact with a valve seat for closing an injection hole and to separate from the valve seat for unclosing the injection hole, an elastic member configured to urge the valve element toward the valve seat, a movable iron core configured to selectively be in or out of contact with the valve element, a fixed iron core opposed to the movable iron core, and a coil configured to generate electromagnetic force for moving the movable iron core,
Dependencies are inferred from the claim text.