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. 22, 2011
Filed:
Jul. 13, 2007
Toshio Inoue, Gotenba, JP;
Osamu Harada, Toyota, JP;
Shunsuke Fushiki, Susono, JP;
Daigo Ando, Nisshin, JP;
Toshio Inoue, Gotenba, JP;
Osamu Harada, Toyota, JP;
Shunsuke Fushiki, Susono, JP;
Daigo Ando, Nisshin, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, JP;
Abstract
A fuel supply system includes a first non-return valve for a low-pressure delivery connection pipe and a second non-return valve for a pump supply pipe. The former non-return pipe does not allow fuel to flow from the low-pressure delivery pipe to the low-pressure supply pipe. The second non-return valve does not allow fuel to flow from pump supply pipe to the low-pressure supply pipe. Upon determining that air purging is necessary, an engine ECU operates a feed pump for approximately one second and then opens, for dummy injection, an in-cylinder injector and an intake manifold injector.