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:
Aug. 27, 2019
Filed:
Jul. 25, 2017
Cummins Ip, Inc., Columbus, IN (US);
Fan Zeng, Columbus, IN (US);
C. Larry Bruner, Greenwood, IN (US);
Edmund P. Hodzen, Columbus, IN (US);
Ian A. Package, Columbus, IN (US);
Shankar Kumar, Columbus, IN (US);
Krishna Kamasamudram, Columbus, IN (US);
Cummins IP, Inc., Columbus, IN (US);
Abstract
A method and system for mitigating a urea deposit within an SCR system that includes determining a mass of an accumulated urea deposit present within the SCR catalyst and SCR piping, comparing the mass of the accumulated urea deposit with a deposit upper threshold limit, and initiating an SCR regeneration event when the mass of the accumulated urea deposit is greater than the deposit upper threshold limit. The method further includes determining an amount of NHpassing through the SCR catalyst downstream of the urea deposit, comparing the amount of NHpassing through the SCR catalyst with an NHregeneration threshold limit, and terminating the SCR regeneration event when the level of NHpassing through the SCR catalyst is less than the SCR NHregeneration threshold.