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:
Jul. 26, 2011
Filed:
Oct. 23, 2003
Tetsuya Kamihara, Yokohama, JP;
Tetsuya Kamihara, Yokohama, JP;
Nissan Motor Co., Ltd., Yokohama-shi, JP;
Abstract
A fuel cell system (S) is provided with a fuel cell () supplied with hydrogen gas and oxidizing gas, a gas supply line () supplying the hydrogen gas to the fuel cell, a gas exhaust line () passing exhaust hydrogen gas expelled from the fuel cell with the exhaust hydrogen gas being able to contain nitrogen, a gas recirculation line () recirculating the exhaust hydrogen gas to the fuel cell at an upstream thereof, a purge valve () adapted to discharge the exhaust hydrogen gas, containing the nitrogen, to an outside, and a controller () operative to close the purge valve when judgment is made that a flow rate of the exhaust hydrogen gas passing through the purge valve during an opened state of the purge valve is equal to or greater than a predetermined value.