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Title: Method to monitor HC-SCR catalyst NOx reduction performance for lean exhaust applications

Abstract

A method for initiating a regeneration mode in selective catalytic reduction device utilizing hydrocarbons as a reductant includes monitoring a temperature within the aftertreatment system, monitoring a fuel dosing rate to the selective catalytic reduction device, monitoring an initial conversion efficiency, selecting a determined equation to estimate changes in a conversion efficiency of the selective catalytic reduction device based upon the monitored temperature and the monitored fuel dosing rate, estimating changes in the conversion efficiency based upon the determined equation and the initial conversion efficiency, and initiating a regeneration mode for the selective catalytic reduction device based upon the estimated changes in conversion efficiency.

Inventors:
 [1];  [2];  [3];  [4];  [5];  [6];  [2]
  1. Macomb Township, MI
  2. Troy, MI
  3. Oxford, MI
  4. Shelby Township, MI
  5. Clinton Township, MI
  6. Rochester Hills, MI
Issue Date:
Research Org.:
National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1042619
Patent Number(s):
8186151
Application Number:
12/480,932
Assignee:
GM Global Technology Operations LLC (Detroit, MI)
Patent Classifications (CPCs):
F - MECHANICAL ENGINEERING F01 - MACHINES OR ENGINES IN GENERAL F01N - GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02T - CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
DOE Contract Number:  
FC26-02NT41218
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
10 SYNTHETIC FUELS

Citation Formats

Viola, Michael B, Schmieg, Steven J, Sloane, Thompson M, Hilden, David L, Mulawa, Patricia A, Lee, Jong H, and Cheng, Shi-Wai S. Method to monitor HC-SCR catalyst NOx reduction performance for lean exhaust applications. United States: N. p., 2012. Web.
Viola, Michael B, Schmieg, Steven J, Sloane, Thompson M, Hilden, David L, Mulawa, Patricia A, Lee, Jong H, & Cheng, Shi-Wai S. Method to monitor HC-SCR catalyst NOx reduction performance for lean exhaust applications. United States.
Viola, Michael B, Schmieg, Steven J, Sloane, Thompson M, Hilden, David L, Mulawa, Patricia A, Lee, Jong H, and Cheng, Shi-Wai S. Tue . "Method to monitor HC-SCR catalyst NOx reduction performance for lean exhaust applications". United States. https://www.osti.gov/servlets/purl/1042619.
@article{osti_1042619,
title = {Method to monitor HC-SCR catalyst NOx reduction performance for lean exhaust applications},
author = {Viola, Michael B and Schmieg, Steven J and Sloane, Thompson M and Hilden, David L and Mulawa, Patricia A and Lee, Jong H and Cheng, Shi-Wai S},
abstractNote = {A method for initiating a regeneration mode in selective catalytic reduction device utilizing hydrocarbons as a reductant includes monitoring a temperature within the aftertreatment system, monitoring a fuel dosing rate to the selective catalytic reduction device, monitoring an initial conversion efficiency, selecting a determined equation to estimate changes in a conversion efficiency of the selective catalytic reduction device based upon the monitored temperature and the monitored fuel dosing rate, estimating changes in the conversion efficiency based upon the determined equation and the initial conversion efficiency, and initiating a regeneration mode for the selective catalytic reduction device based upon the estimated changes in conversion efficiency.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2012},
month = {5}
}