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. 09, 2007
Filed:
Aug. 17, 2005
Mahito Shikama, Wako, JP;
Daisuke Sato, Wako, JP;
Takeshi Hara, Wako, JP;
Takashi Yamaguchi, Wako, JP;
Koichi Yoshiki, Wako, JP;
Mahito Shikama, Wako, JP;
Daisuke Sato, Wako, JP;
Takeshi Hara, Wako, JP;
Takashi Yamaguchi, Wako, JP;
Koichi Yoshiki, Wako, JP;
Honda Motor Co., Ltd., Tokyo, JP;
Abstract
A failure diagnosis apparatus for diagnosing a failure of an evaporative fuel processing system wherein a pressure in the evaporative fuel processing system is detected, and a purge control valve and a vent shut valve are closed when stoppage of the engine is detected. A determination is made as to whether there is a leak in the evaporative fuel processing system based on the detected pressure during a predetermined determination period after closing of the purge control and vent shut valves. The determination result is decided according to a parameter indicative of an amount of evaporative fuel generated in the fuel tank after stoppage of the engine.