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:
Jul. 18, 2023
Filed:
Dec. 13, 2021
Applicant:
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Inventor:
Hitoki Sugimoto, Toyota, JP;
Assignee:
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Primary Examiner:
Int. Cl.
CPC ...
F02D 41/00 (2006.01); F02D 41/02 (2006.01); G01M 15/11 (2006.01); F02D 41/14 (2006.01);
U.S. Cl.
CPC ...
F02D 41/0087 (2013.01); F02D 41/0097 (2013.01); F02D 41/029 (2013.01); F02D 41/1475 (2013.01); G01M 15/11 (2013.01); F02D 2200/0812 (2013.01); F02D 2200/1012 (2013.01); F02D 2200/1015 (2013.01);
Abstract
A CPU stops combustion control of Cylinder #1 in order to perform a regeneration process of a GPF and performs a regeneration process of causing an air-fuel ratio of an air-fuel mixture in Cylinders #2 to #4 to be richer. When it is determined that a misfire has occurred because a misfire rate when the regeneration process is not being performed is equal to or greater than a predetermined value, the CPU determines that an internal combustion engine has returned to a normal state based on the premise that the misfire rate when the regeneration process is not being performed decreases.