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:
Jan. 20, 2015
Filed:
Nov. 04, 2013
International Engine Intellectual Property Company, Llc, Lisle, IL (US);
Adam C. Lack, New York, NY (US);
Navtej Singh, Arlington Heights, IL (US);
Paul Boon Charintranond, Elmhurst, IL (US);
Michael James Miller, Mt. Prospect, IL (US);
International Engine Intellectual Property Company, LLC., Lisle, IL (US);
Abstract
A system and method for calculating quantity of ammonia stored on an SCR catalyst at various times during an interval of time by processing certain data, including the aggregate quantity of ammonia introduced into an exhaust flow during the interval of time, calculating the efficiency of catalytic conversion of NOx to Nand HO by ammonia at each of the various times by processing certain data, including NOx measurements obtained from upstream and downstream NOx sensors, and establishing a correlation between efficiency of catalytic conversion of NOx to Nand HO by ammonia and quantity of ammonia stored on the SCR catalyst over the interval of time which comprises calculated efficiency of catalytic conversion of NOx and calculated quantity of ammonia stored on the SCR catalyst at each of the various times.