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:
Sep. 11, 2018
Filed:
Jan. 21, 2014
Masahide Okada, Anjou, JP;
Masashi Hakariya, Nagoya, JP;
Yoshifumi Matsuda, Toyota, JP;
Yoshihisa Oda, Toyota, JP;
Hiroaki Tsuji, Miyoshi, JP;
Tokiji Ito, Toyota, JP;
Isao Nakajima, Nisshin, JP;
Toshihiro Kato, Toyota, JP;
Yuya Yoshikawa, Chiryu, JP;
Masahide Okada, Anjou, JP;
Masashi Hakariya, Nagoya, JP;
Yoshifumi Matsuda, Toyota, JP;
Yoshihisa Oda, Toyota, JP;
Hiroaki Tsuji, Miyoshi, JP;
Tokiji Ito, Toyota, JP;
Isao Nakajima, Nisshin, JP;
Toshihiro Kato, Toyota, JP;
Yuya Yoshikawa, Chiryu, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota-shi, JP;
Abstract
A control device of an internal combustion engine according to the present invention executes air-fuel ratio control based on an output of an air-fuel ratio sensor provided at an upstream side of a catalyst, with correction based on an output of an oxygen sensor at a downstream side of the catalyst. When it is determined that a degree of an output tendency in a predetermined lean region is not less than a predetermined lean degree, and that a degree of an output tendency in a predetermined rich region is less than a predetermined rich degree based on lean tendency and rich tendency values representing output tendencies of the oxygen sensor, a limit is set to the correction in a direction to more suppress enriching of an air-fuel ratio as a degree is larger in which the output of the oxygen sensor is shifted to a lean side.