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. 03, 2001
Filed:
Jul. 09, 1998
Jun Yamada, Okazaki, JP;
Kenji Kanehara, Toyohashi, JP;
Motomasa Iizuka, Nisshin, JP;
Takeshi Mizobuchi, Nishio, JP;
Hidetaka Hayashi, Nagoya, JP;
Kouhei Yamada, Kariya, JP;
Isao Watanabe, Nagoya, JP;
Takahiko Kuroda, Toyoake, JP;
Other;
Abstract
An air-fuel ratio control system for a gas-fueled engine which is capable of achieving the combustion in a target air-fuel ratio to surely purify an exhaust gas through an exhaust purification catalyst. In the air-fuel ratio control system, a three-way catalytic converter is placed in an exhaust pipe of the engine and an O,sensor is located on the upstream side of the three-way catalytic converter. The O,sensor comprises an element, and an atmosphere side electrode is formed on an inner surface of the element while an exhaust gas side electrode is formed on an outer surface thereof. The exhaust gas side electrode is coated with a catalyst layer which can remove hydrogen through a catalytic reaction. A control unit of the control system controls a fuel supply quantity by a gas injector using a feedback correction coefficient on the basis of the output of the O,sensor, thereby reducing the deviation between an air-fuel ratio measured by the O,sensor and a target air-fuel ratio.