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:
Mar. 10, 1998
Filed:
Apr. 26, 1996
Applicant:
Inventors:
Hiroshi Ito, Wako, JP;
Yoshiharu Abe, Wako, JP;
Tsuyoshi Takizawa, Wako, JP;
Yoshihisa Hara, Wako, JP;
Assignee:
Honda Giken Kogyo Kabushiki Kaisha, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
F01N / ;
U.S. Cl.
CPC ...
60276 ; 60277 ; 60278 ; 60285 ;
Abstract
An air-fuel ratio control system for an internal combustion engine controls the air-fuel ratio of a mixture supplied to the engine in response to an output from a first air-fuel ratio sensor arranged in an exhaust passage at a location upstream of a catalyst for purifying exhaust gases emitted from the engine. A control parameter for use in controlling an operation of the engine is changed when deterioration of the catalyst caused by sulfur poisoning is detected to desulfurize the catalyst.