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:
Aug. 13, 1996
Filed:
Mar. 16, 1995
Seiji Matsumoto, Wako, JP;
Takuya Aoki, Wako, JP;
Yuichi Shimasaki, Wako, JP;
Seiji Hatcho, Wako, JP;
Toshikazu Oketani, Wako, JP;
Yukio Miyashita, Wako, JP;
Akihisa Saito, Wako, JP;
Takashi Komatsuda, Wako, JP;
Hiroaki Kato, Wako, JP;
Honda Giken Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
An exhaust gas-purifying system for an internal combustion engine has an adsorbing device arranged in an exhaust passage thereof for adsorbing or desorbing unburnt component contained in exhaust gases. An exhaust gas recirculation passage branches off from the exhaust passage at a branch point downstream of the adsorbing device and extending to an intake passage of the engine for returning exhaust gases flowing through the adsorbing device to the intake passage. The path of exhaust gases is changed to selectively introduce the exhaust gases containing the unburnt components into the exhaust gas recirculation passage. The adsorbing capacity of the adsorbing device is checked based on a manner of change in an air-fuel ratio of exhaust gases detected when the exhaust gases are introduced into the exhaust gas recirculation passage.