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. 07, 2010
Filed:
Nov. 03, 2005
Chihiro Wake, Shioya-gun, JP;
Tomoki Kobayashi, Utsunomiya, JP;
Yasunori Kotani, Utsunomiya, JP;
Minoru Uoshima, Utsunomiya, JP;
Kenichiro Ueda, Utsunomiya, JP;
Koichiro Miyata, Utsunomiya, JP;
Chihiro Wake, Shioya-gun, JP;
Tomoki Kobayashi, Utsunomiya, JP;
Yasunori Kotani, Utsunomiya, JP;
Minoru Uoshima, Utsunomiya, JP;
Kenichiro Ueda, Utsunomiya, JP;
Koichiro Miyata, Utsunomiya, JP;
Honda Motor Co., Ltd., Tokyo, JP;
Abstract
A fuel cell system enables time required for purging to be reduced without a major increase in discharge gas concentration at a time of purging. It comprises a fuel cell; a fuel gas supply path for supplying the fuel gas to an anode; an oxidizing gas supply path for supplying an oxidizing gas to a cathode; a fuel gas circulating path for returning an unreacted fuel gas to an anode inlet side; a dilution box for diluting the fuel gas by the oxidizing gas and for discharging it to outside; and a fuel gas discharge path connecting the fuel gas circulating path and a dilution box discharge gas inlet. A drain valve, a purge valve and an air discharge valve are provided, opening areas of which are different from one another. The drain valve with a smallest opening area is initially opened.