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. 17, 2016
Filed:
Mar. 17, 2014
Isao Nakajima, Nisshin, JP;
Yoshifumi Matsuda, Toyota, JP;
Yoshihisa Oda, Toyota, JP;
Masashi Hakariya, Nagoya, JP;
Masahide Okada, Anjou, JP;
Hiroaki Tsuji, Miyoshi, JP;
Tokiji Ito, Toyota, JP;
Tatsuro Shimada, Toyota, JP;
Toshihiro Kato, Toyota, JP;
Yuya Yoshikawa, Chiryu, JP;
Isao Nakajima, Nisshin, JP;
Yoshifumi Matsuda, Toyota, JP;
Yoshihisa Oda, Toyota, JP;
Masashi Hakariya, Nagoya, JP;
Masahide Okada, Anjou, JP;
Hiroaki Tsuji, Miyoshi, JP;
Tokiji Ito, Toyota, JP;
Tatsuro Shimada, Toyota, JP;
Toshihiro Kato, Toyota, JP;
Yuya Yoshikawa, Chiryu, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, JP;
Abstract
An abnormality detecting device of an internal combustion engine according to the present invention includes a sensor nick abnormality detecting unit configured to detect a nick abnormality in a detecting element of a downstream side sensor which is provided in a downstream side of an exhaust gas purifying catalyst in an exhaust passage and generates an output corresponding to an oxygen concentration in exhaust gas, on the basis of a matter that a distribution of an output of the downstream side sensor is biased to an area in which the air-fuel ratio is leaner than a theoretical air-fuel ratio, and an inhibiting unit configured to inhibit detection of the nick abnormality of the detecting element by the sensor nick abnormality detecting unit in the case that an intake air amount exceeds a predetermined amount.