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:
Apr. 21, 2020
Filed:
Sep. 26, 2018
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi-ken, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi-ken, JP;
Abstract
A control device for an internal combustion engine includes an electronic control unit configured to execute dither control processing in a first mode and a second mode. The dither control processing is processing for operating a fuel injection valve such that an air-fuel ratio of at least one cylinder among cylinders becomes lean air-fuel ratio, and an air-fuel ratio of cylinders different from the at least one cylinder becomes rich air-fuel ratio when a condition that a regeneration request of the filter occurs is established. In the second mode, an absolute value of the difference between the air-fuel ratio in the lean combustion cylinder and the air-fuel ratio in the rich combustion cylinder smaller than in the first mode.