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:
Apr. 09, 2019
Filed:
Apr. 15, 2016
Applicant:
Hitachi Automotive Systems, Ltd., Hitachinaka-shi, Ibaraki, JP;
Inventors:
Moritsugu Akiyama, Ibaraki, JP;
Shigehiko Omata, Ibaraki, JP;
Katsutoshi Kobayashi, Tokyo, JP;
Kenichiro Tokuo, Ibaraki, JP;
Assignee:
Hitachi Automotive Systems, Ltd, Hitachinaka-shi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02M 63/00 (2006.01); F02M 59/02 (2006.01); F02M 63/02 (2006.01); F02M 55/02 (2006.01); F02M 59/46 (2006.01); F16K 15/04 (2006.01);
U.S. Cl.
CPC ...
F02M 63/026 (2013.01); F02M 55/02 (2013.01); F02M 59/46 (2013.01); F02M 59/462 (2013.01); F02M 63/0036 (2013.01); F02M 63/0054 (2013.01); F02M 63/0077 (2013.01); F02M 63/0078 (2013.01); F02M 63/025 (2013.01); F02M 63/0245 (2013.01); F16K 15/044 (2013.01); F02M 59/025 (2013.01); F02M 2200/04 (2013.01);
Abstract
An object is to suppress cavitation generated at a distal end portion of a seat face when a valve body and a seat portion collide with each other. In a relief valve of a fuel pump, an intersection between the seat face and a flow channel hole is formed at a position more distant than the seat portion formed of the valve body in a valve closing state and the seat face in order to suppress generation of cavitation bubbles when the valve body improves and releases high-pressure fuel.