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. 25, 2006
Filed:
Sep. 09, 2002
Hirotaka Kameya, Tsuchiura, JP;
Fumio Takeda, Ushiku, JP;
Masayuki Kasahara, Shimizu, JP;
Hitoshi Nishimura, Shimizu, JP;
Hirotaka Kameya, Tsuchiura, JP;
Fumio Takeda, Ushiku, JP;
Masayuki Kasahara, Shimizu, JP;
Hitoshi Nishimura, Shimizu, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A fuel cell stack has an air chamber to which is introduced compressed air that is produced by compressing the atmosphere with a compressor. Energy is recovered from exhaust discharged from the air chamber as it is expanded by an expander. The compressor and the expander are connected to each other via the air chamber of the fuel cell stack through piping. The pressure of the exhaust flowing through the piping is detected by a pressure sensor and, based on the detected pressure, a throttle valve controls a flow rate of the exhaust drawn into the expander.