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, 2017
Filed:
Jul. 15, 2015
Applicant:
Watlow Electric Manufacturing Company, St. Louis, MO (US);
Inventors:
Wenzhong Zhang, Savage, MN (US);
Mike Bange, Elsberry, MO (US);
Scott Boehmer, Hannibal, MO (US);
Magdi Khair, San Antonio, TX (US);
Julian Tan, Vernon Hills, IL (US);
Assignee:
WATLOW ELECTRIC MANUFACTURING COMPANY, St. Louis, MO (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01N 3/00 (2006.01); F01N 3/035 (2006.01); F01N 9/00 (2006.01); F01N 3/027 (2006.01); F01N 3/20 (2006.01); F01N 13/00 (2010.01);
U.S. Cl.
CPC ...
F01N 3/035 (2013.01); F01N 3/027 (2013.01); F01N 3/2013 (2013.01); F01N 9/00 (2013.01); F01N 9/002 (2013.01); F01N 13/009 (2014.06); F01N 2240/16 (2013.01); F01N 2590/08 (2013.01); F01N 2900/1404 (2013.01); Y02T 10/26 (2013.01); Y02T 10/47 (2013.01);
Abstract
A method of heating an exhaust gas in an exhaust aftertreatment system by selecting a heating mode between different heating modes based on an engine load and a status of a component of the exhaust aftertreatment system. The method includes heating the exhaust gas by operating the electric heater in the selected heating mode and heating the exhaust gas to reduce an exhaust temperature gradient across the exhaust conduit.