The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 14, 2019
Filed:
Jan. 27, 2014
Hitachi Automotive Systems, Ltd., Hitachinaka-shi, Ibaraki, JP;
Yoshihito Yasukawa, Hitachinaka, JP;
Hideharu Ehara, Hitachinaka, JP;
Tohru Ishikawa, Hitachinaka, JP;
Kiyotaka Ogura, Hitachinaka, JP;
Motoyuki Abe, Tokyo, JP;
Ryo Kusakabe, Tokyo, JP;
Akiyasu Miyamoto, Tokyo, JP;
Hitachi Automotive Systems, Ltd., Hitachinaka-shi, JP;
Abstract
In an electromagnetic fuel injection which is structured such that both end surfaces of an inner circumferential iron core portion and an outer circumferential iron core portion face a movable iron core, and a non-magnetic portion made of a metal material is provided between both end surfaces, an object of the present invention is to realize a structure of the electromagnetic fuel injector in which a surface of a target object is unlikely to be affected by a heat treatment with the surface facing the movable iron core. In an electromagnetic fuel injectorof the present invention which is structured such that both end surfaces of an inner circumferential iron core portionand an outer circumferential iron core portionface a movable iron core, and a non-magnetic portionmade of a metal material is provided between both end surfaces, in order to achieve this object, heat in a target member to be heat treated is generated by applying energy to a target member's surface which is different from a target member's surface that faces the movable iron core. More preferably, energy is applied to a surface different from a surface on a side that faces the movable iron core