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:
Jun. 03, 2014
Filed:
Feb. 20, 2009
Shunsuke Aritomi, Mito, JP;
Hideki Machimura, Tokai, JP;
Kiyotaka Ogura, Hitachinaka, JP;
Masami Abe, Kai, JP;
Kenichiro Tokuo, Hitachinaka, JP;
Shunsuke Aritomi, Mito, JP;
Hideki Machimura, Tokai, JP;
Kiyotaka Ogura, Hitachinaka, JP;
Masami Abe, Kai, JP;
Kenichiro Tokuo, Hitachinaka, JP;
Hitachi Automotive Systems, Ltd., Hitachinaka-shi, JP;
Abstract
A high-pressure fuel supply pump includes a discharge valve, which is a non-return valve between a pressurizing chamber and a discharge port. The discharge valve includes a valve body housing, a discharge valve spring, a valve body and a seat member. The discharge valve is a flat valve. When the valve is opened, a flow of fuel moving from the pressurizing chamber and axially colliding with the valve body is radially distributed in the radial direction of the valve body to become a flow directly moving the discharge ports and a flow colliding with an inner wall of the valve body housing before moving toward the discharge ports and then in a circumferential direction of the valve body.