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:
Apr. 25, 2023
Filed:
Sep. 09, 2022
Cummins Emission Solutions Inc., Columbus, IN (US);
James C. Clerc, Columbus, IN (US);
Bradley V. Jones, Columbus, IN (US);
Marc Alexander Greca, Bargersville, IN (US);
Santosh Kumar Ratan, Indianapolis, IN (US);
Rohil Daya, Columbus, IN (US);
Karthik Venkata Rama Krishna Dadi, Columbus, IN (US);
Jinqian Gong, Columbus, IN (US);
Bryon D. Staebler, Columbus, IN (US);
Todd A. Corbet, Franklin, IN (US);
Alain Ngoy Tschimwang, Indianapolis, IN (US);
Premjee Sasidharan, Columbus, IN (US);
David C. Hall, Columbus, IN (US);
Cummins Emission Solutions Inc., Columbus, IN (US);
Abstract
A controller for controlling operation of an aftertreatment system that is configured to treat constituents of an exhaust gas produced by an engine, the aftertreatment system including a selective catalytic reduction (SCR) catalyst, the controller configured to: generate a short-term cumulative degradation estimate of the SCR catalyst corresponding to reversible degradation of the SCR catalyst due to sulfur and/or hydrocarbons based on a SCR catalyst temperature parameter; generate a long-term cumulative degradation estimate of the SCR catalyst corresponding to thermal aging of the SCR catalyst based on the SCR catalyst temperature parameter; generate a combined degradation estimate of the SCR catalyst based on the short-term cumulative degradation estimate and the long-term cumulative degradation estimate; and adjust an amount of reductant and/or an amount of hydrocarbons inserted into the aftertreatment system based on the combined degradation estimate of the SCR catalyst.