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:
May. 05, 2015
Filed:
Dec. 23, 2011
Shinichi Kuratani, Kobe, JP;
Tsuyoshi Takeuchi, Kobe, JP;
Kozo Suzuki, Kobe, JP;
Takashi Abe, Akashi, JP;
Yoshinobu Mori, Kobe, JP;
Daisuke Yanase, Akashi, JP;
Shinichi Kuratani, Kobe, JP;
Tsuyoshi Takeuchi, Kobe, JP;
Kozo Suzuki, Kobe, JP;
Takashi Abe, Akashi, JP;
Yoshinobu Mori, Kobe, JP;
Daisuke Yanase, Akashi, JP;
Kawasaki Jukogyo Kabushiki Kaisha, Kobe-shi, JP;
Abstract
An air-fuel ratio control system of an internal combustion engine comprises a fuel amount determiner for determining a fuel command value. The fuel amount determiner has a feedback control mode in which the fuel amount determiner determines a running state reference coefficient corresponding to a running state detected by a running state detector based on a first correspondence stored in the memory, determines a running state compensation coefficient corresponding to the running state detected by the running state detector based on a second correspondence stored in the memory, determines a feedback compensation coefficient used to cause an air-fuel ratio to reach a value closer to a theoretical air-fuel ratio based on an output of the air-fuel ratio sensor, and determines the fuel command value using a formula including the determined running state reference coefficient, the determined running state compensation coefficient, and the determined feedback compensation coefficient.