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:
Apr. 24, 2001
Filed:
Sep. 30, 1999
Applicant:
Inventors:
Kenji Sugiura, Saitama, JP;
Toshikatsu Takanohashi, Saitama, JP;
Assignee:
Honda Giken Kogyo Kabushiki Kaisha, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01N 3/00 ;
U.S. Cl.
CPC ...
F01N 3/00 ;
Abstract
If conditions of stopping an engine are satisfied, it is judged whether the lean operation in which the air-fuel ratio is set to be on a lean side with respect to the theoretical air-fuel ratio is currently performed or not. If the lean operation is currently performed, reduction enrichment of NOx is executed during an enrichment time TRICH, and the engine is thereafter actually stopped.