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:
Feb. 13, 2018
Filed:
Feb. 03, 2014
Hitachi Automotive Systems, Ltd., Hitachinaka-shi, Ibaraki, JP;
Shunsuke Aritomi, Tokyo, JP;
Hitoshi Konno, Hitachinaka, JP;
Yukio Takahashi, Hitachinaka, JP;
Masayuki Suganami, Hitachinaka, JP;
Katsumi Miyazaki, Hitachinaka, JP;
Kenichirou Tokuo, Tokyo, JP;
Hitachi Automotive Systems, Ltd., Hitachinaka-shi, JP;
Abstract
It is an object of the present invention to provide an electromagnetic valve structure improved in terms of the responsiveness of the electromagnetic valve and helping to realize a more accurate flow rate control, and to provide a high-pressure fuel supply pump in which the same is mounted. There is provided a high-pressure fuel supply pump having an electromagnetic valve equipped with an electromagnetic coil generating an electromagnetic force for opening and closing a valve body provided between a fuel intake path and a pressure chamber, a movable member operated by the electromagnetic force, a housing accommodating the movable member, and a back-pressure chamber formed between the housing and the movable member, wherein a first fuel path causing the back-pressure chamber to communicate with the intake path passes the center axis of the movable member.