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:
Nov. 19, 2019
Filed:
Mar. 27, 2018
Applicant:
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi-ken, JP;
Inventor:
Shintaro Hotta, Susono, JP;
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota-shi, Aichi-ken, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02D 41/00 (2006.01); F02D 37/02 (2006.01); F02P 5/04 (2006.01); F02P 5/15 (2006.01); F02B 37/18 (2006.01); F02B 13/02 (2006.01); F02D 43/04 (2006.01); F02D 41/30 (2006.01); F02D 41/14 (2006.01); F02D 13/02 (2006.01);
U.S. Cl.
CPC ...
F02D 41/0052 (2013.01); F02B 37/18 (2013.01); F02D 37/02 (2013.01); F02D 41/005 (2013.01); F02D 41/1454 (2013.01); F02D 41/1475 (2013.01); F02D 41/30 (2013.01); F02D 43/04 (2013.01); F02P 5/045 (2013.01); F02P 5/1516 (2013.01); F02D 13/0226 (2013.01); F02D 2041/001 (2013.01); F02D 2200/08 (2013.01); F02D 2200/101 (2013.01); F02D 2200/1002 (2013.01); Y02T 10/144 (2013.01);
Abstract
Assume that a boundary on the air-fuel ration operation is changed from a boundary (i) to a boundary (ii). Then, after the boundary is changed, a high EGR operation region where a target EGR rate is set to a high value overlaps partially with a rich operation region. Therefore, when it is determined that the current operating point exists in the overlapped region, the target EGR rate is forcibly lowered. In addition, the boundary on a drive cam for an intake valve is changed from a boundary (I) to a boundary (II) thereby a region where a small cam is selected is enlarged.