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:
May. 22, 2012
Filed:
Apr. 30, 2008
Phanindra Garimella, Bloomington, IN (US);
Abdul R. Ofoli, Columbus, IN (US);
Timothy R. Frazier, Columbus, IN (US);
Joan M. Wills, Nashville, IN (US);
John N. Chi, Columbus, IN (US);
Weiwen Wang, Columbus, IN (US);
Andrew Osburn, Nashville, IN (US);
Phanindra Garimella, Bloomington, IN (US);
Abdul R. Ofoli, Columbus, IN (US);
Timothy R. Frazier, Columbus, IN (US);
Joan M. Wills, Nashville, IN (US);
John N. Chi, Columbus, IN (US);
Weiwen Wang, Columbus, IN (US);
Andrew Osburn, Nashville, IN (US);
Cummins IP. Inc., Minneapolis, MN (US);
Abstract
Various embodiments of an apparatus, system, and method are disclosed for reducing NOemissions using ammonia storage on an SCR catalyst. For example, according to one representative embodiment, an apparatus for reducing NOemissions in an engine exhaust includes a NOreduction target module that is configured to determine a NOreduction requirement. The apparatus also includes an ammonia storage module that is configured to determine an ammonia storage modifier. An ammonia target module of the apparatus is configured to determine an ammonia addition requirement. The ammonia target module is communicable in data receiving communication with the ammonia storage module to receive the ammonia storage modifier, which is added to the ammonia addition requirement. The apparatus also includes a reductant target module that is configured to determine a reductant injection requirement that includes an amount of reductant added to the exhaust gas stream to achieve the ammonia addition requirement.