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:
Mar. 04, 2014
Filed:
Jun. 18, 2008
Yoshitaka Ono, Yokosuka, JP;
Takahiro Fujii, Miura, JP;
Takashi Iimori, Tokyo, JP;
Akira Matsunaga, Yokohama, JP;
Ryoichi Shimoi, Yokohama, JP;
Kazuo Saito, Yokohama, JP;
Hitoshi Igarashi, Yokohama, JP;
Yoshitaka Ono, Yokosuka, JP;
Takahiro Fujii, Miura, JP;
Takashi Iimori, Tokyo, JP;
Akira Matsunaga, Yokohama, JP;
Ryoichi Shimoi, Yokohama, JP;
Kazuo Saito, Yokohama, JP;
Hitoshi Igarashi, Yokohama, JP;
Nissan Motor Co., Ltd., Yokohama-shi, Kanagawa, JP;
Abstract
A fuel cell system which prevents the deterioration of the fuel cell stack when feeding of the oxidant gas is paused under a load to perform a fuel conservation operation. Controller shuts down oxidant gas compressor and cooling water circulating pump to execute fuel conservation operation at a low fuel cell system load. The controller gives a current draw instruction to electric power controller. In the fuel conservation operation, electric power controller draws a current larger than zero from fuel cell stack, and keeps the total charge drawn per unit time constant or substantially constant.