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:
Jan. 11, 2005
Filed:
Aug. 29, 2001
Masatoshi Iio, Yokohama, JP;
Yasukazu Iwasaki, Yokosuka, JP;
Masatoshi Iio, Yokohama, JP;
Yasukazu Iwasaki, Yokosuka, JP;
Nissan Motor Co., Ltd., Yokohama, JP;
Abstract
The hydrogen permeating to a post-separation side (B) of the membrane hydrogen separator () is supplied to an anode chamber (A) of a fuel cell stack () via a hydrogen supply passage (). A hydrogen recirculation passage () recirculates hydrogen from the anode chamber (A) to the post-separation side (B). When the hydrogen partial pressure on the post-separation side (B) increases, air is introduced into the hydrogen recirculation passage () from an intake valve (). When the hydrogen partial pressure decreases, gas in the hydrogen recirculation passage () is discharged from an exhaust valve (). The rate of hydrogen permeation through the membrane hydrogen separator () is thereby maintained to a preferred level.