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:
Jun. 26, 2018
Filed:
Jul. 16, 2014
Applicant:
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi-ken, JP;
Inventors:
Takashi Yui, Miyoshi, JP;
Kota Hayashi, Nagoya, JP;
Assignee:
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02D 41/00 (2006.01); F02D 41/22 (2006.01); F02D 13/02 (2006.01); F02D 41/02 (2006.01); F02D 41/08 (2006.01); F02D 41/18 (2006.01);
U.S. Cl.
CPC ...
F02D 41/0002 (2013.01); F02D 13/0211 (2013.01); F02D 41/221 (2013.01); F02D 41/0255 (2013.01); F02D 41/08 (2013.01); F02D 41/18 (2013.01); F02D 2041/001 (2013.01); Y02T 10/18 (2013.01); Y02T 10/42 (2013.01);
Abstract
An internal combustion engine includes a variable mechanism that changes a working angle of an intake valve. A controller diagnoses whether there is an abnormality that an intake air amount reduces during idle operation. The controller changes an abnormality determination threshold for diagnosing an abnormality on the basis of a mode in which the working angle is changed by the variable mechanism.