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:
Jan. 31, 2017
Filed:
Apr. 22, 2015
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi-ken, JP;
Akira Hojo, Susono, JP;
Shingo Korenaga, Shizuoka, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota-shi, JP;
Abstract
An internal combustion engine control device is provided. An engine executes A/F oscillation that alternates between lean combustion and rich combustion every cylinder. If a reaction state between rich gas and lean gas inside an exhaust passage on the upstream side of a catalyst is judged to be low, the assignment of cylinders conducting lean combustion and cylinders conducting rich combustion is swapped, so that rich combustion is conducted by a #1 cylinder farthest away from the catalyst in terms of the length of the exhaust passage, and also so that lean combustion is conducted by a #2 cylinder closer to the catalyst than the cylinder that is farthest away.