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:
Dec. 16, 2014
Filed:
Jul. 31, 2008
Mitsuto Sakai, Toyota, JP;
Tatsuhiko Akita, Okazaki, JP;
Tsutomu Furuhashi, Okazaki, JP;
Tatsumi Oguri, Okazaki, JP;
Mitsuto Sakai, Toyota, JP;
Tatsuhiko Akita, Okazaki, JP;
Tsutomu Furuhashi, Okazaki, JP;
Tatsumi Oguri, Okazaki, JP;
Toyota Jidosha Kabushiki Kaisha, Aichi-ken, JP;
Abstract
In one embodiment, a small-diameter opening () is formed in the central portion of a valve element () included in a check valve () of a high pressure fuel pump (). A needle valve () is provided integrally with a valve element () of an electromagnetic spill valve (), and the opening () of the valve element () can be opened and closed with a tip portion of the needle valve (). When the high pressure fuel pump () switches from the drive state to the stopped state, the needle valve () retreats from the opening () of the valve element () in conjunction with the movement of the valve element () of the electromagnetic spill valve, thus forming a micro gap. When the high pressure fuel pump () is driven and the intake stroke is performed, the needle valve () obstructs the openingof the valve element () in conjunction with the movement of the valve element () of the electromagnetic spill valve, thus preventing the back-flow of fuel due to the existence of the micro gap.