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. 04, 2014
Filed:
Mar. 07, 2008
Yasuhiro Osada, Nagoya, JP;
Tetsuya Bono, Aichi-ken, JP;
Yasuhiro Osada, Nagoya, JP;
Tetsuya Bono, Aichi-ken, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-Shi, JP;
Abstract
A fuel cell system has an inlet shutoff valve provided in a main route forming an oxidized gas supply flow path, a humidifier bypass valve provided in a humidifier bypass route which is a route bypassing the main route, a fuel cell bypass valve provided in a fuel cell bypass route bypassing a fuel cell stack, and fuel cell bypass valve controlling unit. Under abnormal conditions in which one of the inlet shutoff valve and the humidifier bypass valve does not function even if the pressure in a valve opening pressure chamber of the one of the valves is at a first pressure value, the fuel cell bypass valve controlling unit restrict the opening of the fuel cell bypass valve to increase the pressure in the valve opening pressure chamber.