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. 19, 2018
Filed:
Jan. 05, 2015
Applicant:
Cummins Inc., Columbus, IN (US);
Inventors:
Phanindra V. Garimella, Bloomington, IN (US);
Andrew W. Osburn, Nashville, IN (US);
Assignee:
Cummins Inc., Columbus, IN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01N 3/20 (2006.01);
U.S. Cl.
CPC ...
F01N 3/208 (2013.01); F01N 2560/021 (2013.01); F01N 2560/026 (2013.01); F01N 2560/14 (2013.01); F01N 2610/02 (2013.01); F01N 2900/0404 (2013.01); F01N 2900/0601 (2013.01); F01N 2900/1602 (2013.01); F01N 2900/1616 (2013.01); F01N 2900/1621 (2013.01); F01N 2900/1622 (2013.01); Y02T 10/24 (2013.01);
Abstract
Systems, methods and apparatus disclosed that include an internal combustion engine and an exhaust system that includes an exhaust aftertreatment system with an SCR catalyst. A NOsensor downstream of the SCR catalyst is provided along with techniques for estimating an amount of NOand NH3 at the tailpipe to decouple the impact of cross-sensitivity of the NOsensor to NOand NH3. Feedback control of the reductant dosing amount based on these estimates is also provided.