Electromagnetic fuel injection valve
AssigneeHitachi, Ltd.
InventorsYoshio Okamoto, Yuzo Kadomukai, Makoto Yamakado, Noriyuki Maekawa, Tohru Ishikawa, Ayumu Miyajima, Kiyoshi Amou
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AssigneeHitachi, Ltd.
InventorsYoshio Okamoto, Yuzo Kadomukai, Makoto Yamakado, Noriyuki Maekawa, Tohru Ishikawa, Ayumu Miyajima, Kiyoshi Amou
Estimating the term…
A valve structure which works easily, does not increase production cost, can reduce dispersion in a side gap by restricting eccentricity and incline of a valve body and can maintain highly accurate injection. An electromagnetic fuel injection valve is required which is easy to manufacture even in a narrow valve structure. A guide portion is provided having one end fixed to an injection valve main body for guiding the valve member. A nozzle guide body constituting a magnetic passage portion to surround a magnetic member connected and fixed to one end of the valve member by the same material is provided. Accordingly, it is possible to reduce dispersion of a side gap constituting the magnetic passage, and it is also possible to stabilize an axial motion of the valve member, whereby high injection accuracy is maintained and an inexpensive injection valve is obtained.
An electromagnetic fuel injection valve for driving a valve body having a valve closing portion being in contact with or apart from a valve seat and a magnetic passage portion forming a magnetic passage by an electromagnetic force, comprising:
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