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. 31, 2018
Filed:
May. 19, 2017
Watlow Electric Manufacturing Company, St. Louis, MO (US);
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);
Watlow Electric Manufacturing Company, St. Louis, MO (US);
Abstract
A method of heating an exhaust gas in an exhaust after treatment system includes selecting a heating mode between a plurality of heating modes based on an engine load and a status of a component of the exhaust aftertreatment system. The method further comprises heating the exhaust gas by operating the electric heater in the selected heating mode, and operating the electric heater in a passive regeneration heating mode to heat an exhaust gas to a predetermined temperature to increase NO2 generation when an engine load is less than or equal to approximately 25%.