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:
Aug. 10, 2010
Filed:
Nov. 15, 2005
Yasunori Kotani, Utsunomiya, JP;
Shinji Yoshikawa, Utsunomiya, JP;
Akio Yamamoto, Utsunomiya, JP;
Tomoki Kobayashi, Utsunomiya, JP;
Yasunori Kotani, Utsunomiya, JP;
Shinji Yoshikawa, Utsunomiya, JP;
Akio Yamamoto, Utsunomiya, JP;
Tomoki Kobayashi, Utsunomiya, JP;
Honda Motor Co., Ltd., Tokyo, JP;
Abstract
When an ignition switch is turned off, a hydrogen supply valve is closed. Operation of a compressor continues, and an air supply valve and an air discharge valve are opened to supply the compressed air into a fuel cell through a hydrogen supply port. The scavenging process of removing the fuel gas and the water remaining in the fuel gas channel is performed through the air discharge valve, a drain valve, and a hydrogen purge valve. Then, all the valves connected to the fuel gas channel are closed. The pressure when the valves are closed, and the pressure when a short time has elapsed after closing the valves are detected by a pressure sensor. Based on the pressure difference, a failure due to the leakage in the fuel gas channel is detected.