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:
Oct. 05, 1999
Filed:
Oct. 22, 1997
Eiji Inada, Kanagawa-ken, JP;
Shinichirou Kitada, Tokyo, JP;
Toshio Kikuchi, Kanagawa-ken, JP;
Hiroyuki Hirano, Kanagawa-ken, JP;
Ryuichi Idoguchi, Kanagawa-ken, JP;
Takeshi Aso, Kanagawa-ken, JP;
Yuutarou Kaneko, Kanagawa-ken, JP;
Nissan Motor., LTD., Kanagawa, JP;
Abstract
By calculating a fuel vapor quantity in a fuel tank based on a fuel temperature and a fuel residual quantity in the fuel tank, then calculating a fuel vapor purge quantity based on an engine revolution number and engine torque when an engine is driven, and then estimating a fuel vapor quantity captured in a vapor capturing unit based on the fuel vapor quantity and the fuel vapor purge quantity, the engine can be driven to purge the fuel vapor to the engine before the fuel vapor overflows the vapor capturing unit to thus be discharged into the air.