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:
Apr. 04, 2023
Filed:
Dec. 14, 2021
Applicant:
Deere & Company, Moline, IL (US);
Inventors:
Danan Dou, Cedar Falls, IA (US);
Eric J. Hruby, Waterloo, IA (US);
Assignee:
Deere & Company, Moline, IL (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
F01N 3/20 (2006.01); F02M 26/33 (2016.01); F01N 3/22 (2006.01); F01N 9/00 (2006.01); F02B 29/04 (2006.01); F02M 26/25 (2016.01);
U.S. Cl.
CPC ...
F01N 3/2046 (2013.01); F01N 3/208 (2013.01); F01N 3/2013 (2013.01); F01N 3/22 (2013.01); F01N 9/00 (2013.01); F02M 26/33 (2016.02); F01N 3/2006 (2013.01); F02B 29/0418 (2013.01); F02B 29/0475 (2013.01); F02B 29/0493 (2013.01); F02M 26/25 (2016.02);
Abstract
One or more techniques and/or systems are disclosed for controlling exhaust heating to reduce engine out NOemission. A heater is used for exhaust temperature control of an exhaust system and is activated at a non-active selective catalytic reduction (SCR) system temperature. One or more exhaust air flow bypasses are controlled during operation of the heater and heating of an exhaust air flow is maintained by the heater prior to activation of the SCR system.