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. 04, 2012
Filed:
Oct. 29, 2008
Norimasa Ishikawa, Asahikawa, JP;
Norimasa Ishikawa, Asahikawa, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, JP;
Abstract
To improve a response performance in a fuel cell system in which an on/off valve such as an injector is disposed in a fuel supply passage, by decreasing a pressure adjusting error occurring when the drive cycle of the on/off valve fluctuates. A fuel cell system comprises a fuel cell, a fuel supply passage for supplying to the fuel cell a fuel gas supplied from a fuel supply source, an on/off valve for adjusting a gas state on the upstream side of the fuel supply passage to supply the gas to the downstream side thereof, and control means for driving and controlling the on/off valve. The control means calculates a feed-forward correction flow rate based on the drive cycle of the on/off valve, corrects the command value of the gas injection flow rate of the on/off valve by use of the feed-forward correction flow rate, and drives and controls the on/off valve based on the command value.