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:
Jul. 01, 2008
Filed:
Dec. 11, 2007
Applicants:
Shinsuke Takakura, Kariya, JP;
Masao Kano, Gamogori, JP;
Noriyasu Amano, Gamagori, JP;
Inventors:
Assignees:
Denso Corporation, , JP;
Nippon Soken, Inc., , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02M 33/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
A fuel vapor treatment system includes a canister containing an adsorbent, a detector detecting a concentration of a fuel vapor, a purge passage for introducing the mixture gas into an engine, and an ECU which controls a purge based on a detected fuel vapor condition quantity and learns a fuel vapor concentration. If a difference between a learned concentration and a detection concentration is not less than a specified value, the ECU performs a purge control based on the learned concentration prior to a purge control based on the detection concentration.