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:
Oct. 20, 2015
Filed:
Feb. 20, 2013
Applicant:
Cummins Inc., Columbus, IN (US);
Inventors:
Richard Ancimer, Columbus, IN (US);
Mert Geveci, Albany, NY (US);
Assignee:
CUMMINS INC., Columbus, IN (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01N 3/20 (2006.01); B01D 53/94 (2006.01); F01N 3/10 (2006.01); F01N 11/00 (2006.01); F01N 3/035 (2006.01); F01N 13/00 (2010.01);
U.S. Cl.
CPC ...
B01D 53/9495 (2013.01); B01D 53/9418 (2013.01); F01N 3/035 (2013.01); F01N 3/10 (2013.01); F01N 3/208 (2013.01); F01N 11/00 (2013.01); F01N 13/009 (2014.06); F01N 13/0093 (2014.06); B01D 2255/904 (2013.01); F01N 3/106 (2013.01); F01N 2550/02 (2013.01); F01N 2560/021 (2013.01); F01N 2560/026 (2013.01); F01N 2560/06 (2013.01); F01N 2610/02 (2013.01); F01N 2900/0412 (2013.01); F01N 2900/0418 (2013.01); F01N 2900/1402 (2013.01); F01N 2900/1404 (2013.01); F01N 2900/1602 (2013.01); F01N 2900/1612 (2013.01); F01N 2900/1621 (2013.01); Y02T 10/24 (2013.01);
Abstract
Systems and methods are provided for determining and controlling an NOto NOratio reference target in an exhaust conduit between a first SCR catalyst and a second SCR catalyst. The method includes determining a present NOto NOratio in the exhaust conduit between the first SCR catalyst and the second SCR catalyst, and providing a reductant doser command in response to a deviation of the present NOto NOratio from the NOto NOratio reference target.