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:
Feb. 14, 2017
Filed:
Oct. 11, 2011
Sachio Mori, Mishima, JP;
Sachio Mori, Mishima, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Aichi-ken, JP;
Abstract
A control device for an internal combustion engine includes first and second intake ports () independent of each other, and first and second fuel injection valves () provided for the first and second intake ports (), respectively, in each cylinder. Under a situation where an exhaust variable valve mechanism () is controlled such that a first exhaust valve () is opened earlier than a second exhaust valve (), first and second air-fuel ratios A/F1, A/F2 are respectively obtained in a first half and a second half of an exhaust stroke. When the obtained first air-fuel ratio A/F1 (or the second air-fuel ratio A/F2) is lean, a fuel injection amount in a next cycle by the first or second fuel injection valve () corresponding to the first air-fuel ratio A/F1 (or the second air-fuel ratio A/F2) that is lean is reduced.