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:
Sep. 21, 2004
Filed:
May. 23, 2002
Masaru Okamoto, Yokosuka, JP;
Nissan Motor Co., Ltd., Kanagawa, JP;
Abstract
A fuel cell system is provided which controls the temperature while maintaining the internal pressure of the fuel cell system to a permitted pressure range. A target variation amount in the flow rate of the anode effluent is calculated based on a single target temperature-time curve selected from a plurality of target temperature-time curves. Furthermore the pressure variation of the reformate gas produced by variation in the target flow rate is predicted. It is determined whether the predicted pressure will be maintained to a permitted temperature range. When the predicted pressure will not be maintained to the permitted temperature range, a temperature-time curve with more gentle variation is selected. A final curve is selected by repeating the selection process until it is determined that the predicted pressure will be maintained to the permitted temperature range.