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:
Oct. 27, 2015
Filed:
Nov. 14, 2008
Tatsuhiko Akita, Okazaki, JP;
Mitsuto Sakai, Toyota, JP;
Tatsuhiko Akita, Okazaki, JP;
Mitsuto Sakai, Toyota, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Aichi-ken, JP;
Abstract
A discharge valve () is provided in a high-pressure fuel passage () to allow fuel to pass through the discharge valve () only in a direction from a high-pressure fuel pump () toward a delivery pipe (). A communication passage () with an orifice () is formed integrally with the discharge valve () in parallel with the discharge valve () to connect areas upstream and downstream of the discharge valve (). When a fuel pressure in the delivery pipe () is increased to a target pressure using the high-pressure fuel pump (), an amount of the fuel, which does not interfere with an increase in the fuel pressure, flows through the orifice (). A check valve () is provided in the communication passage (), and opened to allow the fuel to pass through the check valve () only in the direction from the delivery pipe () toward the high-pressure fuel pump (), when the fuel pressure is higher than a first predetermined pressure.