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. 09, 2020
Filed:
Dec. 11, 2017
Applicant:
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi-ken, JP;
Inventors:
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota-shi, Aichi-ken, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02D 41/00 (2006.01); F02D 13/02 (2006.01); F02D 41/24 (2006.01); F02D 41/20 (2006.01); F02B 37/00 (2006.01); F02D 41/14 (2006.01);
U.S. Cl.
CPC ...
F02D 41/005 (2013.01); F02D 13/0276 (2013.01); F02D 41/0007 (2013.01); F02D 41/2422 (2013.01); F02B 37/00 (2013.01); F02D 13/0226 (2013.01); F02D 2041/001 (2013.01); F02D 2041/1412 (2013.01); F02D 2200/101 (2013.01); F02D 2200/602 (2013.01); F02D 2250/21 (2013.01); Y02T 10/144 (2013.01); Y02T 10/18 (2013.01); Y02T 10/47 (2013.01);
Abstract
An operating range boundary for switching a cam for driving an intake valve (drive cam) is changed in a direction of decreasing an engine load if a target EGR rate is predicted to increase across the contour line of the EGR rate. By changing the boundary, the drive cam is switched from a large cam to a small cam before an operating point is transferred from a partitioned range with a low target EGR rate to a partitioned range with a high target EGR rate.