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. 26, 2015
Filed:
Feb. 21, 2013
Toshihiro Kato, Toyota, JP;
Isao Nakajima, Toyota, JP;
Kiyotaka Kushihama, Nagoya, JP;
Tatsuro Shimada, Toyota, JP;
Shinichi Nakagoshi, Toyota, JP;
Toshihiro Kato, Toyota, JP;
Isao Nakajima, Toyota, JP;
Kiyotaka Kushihama, Nagoya, JP;
Tatsuro Shimada, Toyota, JP;
Shinichi Nakagoshi, Toyota, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, JP;
Abstract
In an engine having a plurality of cylinders in which a plurality of fuel injection valves are provided respectively, fuel is injected at a predetermined injection ratio, and an abnormality of air-fuel ratio variation is detected. If a fuel injection amount of at least one of the plurality of the fuel injection valves is smaller than a predetermined reference value, the fuel injection amount is increased so as to become equal to or larger than the reference value.