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. 23, 2020
Filed:
Dec. 12, 2018
Applicant:
Denso International America, Inc., Southfield, MI (US);
Inventor:
Edward Szczepanski, Grosse Pointe Woods, MI (US);
Assignee:
DENSO International America, Inc., Southfield, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F02D 41/00 (2006.01); F02D 17/02 (2006.01); F02D 13/06 (2006.01); F02D 13/02 (2006.01); F02D 41/02 (2006.01); F01N 3/08 (2006.01);
U.S. Cl.
CPC ...
F02D 41/0087 (2013.01); F02D 13/02 (2013.01); F02D 13/06 (2013.01); F02D 17/02 (2013.01); F02D 41/0055 (2013.01); F02D 41/024 (2013.01); F02D 41/0235 (2013.01); F02D 41/0255 (2013.01); F01N 3/0814 (2013.01); F02D 2200/0802 (2013.01);
Abstract
A vehicle includes an internal combustion engine, a conduit, and a controller. The internal combustion engine has a plurality of cylinders. The conduit is configured to channel exhaust gas away from the cylinders and to a catalyst. The controller is programmed to, in response to starting the engine and a temperature of the catalyst being less than a threshold, operate a first of the plurality of cylinders alone followed by operating the first and a second of the plurality of cylinders alone to increase the temperature of the catalyst toward the threshold.