Diagnostic methods for a high efficiency exhaust aftertreatment system

Gupta, Aniket; Cunningham, Michael J.; Haas, Michael; Kothandaraman, Govindarajan

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Title: Diagnostic methods for a high efficiency exhaust aftertreatment system

Abstract

A method includes interpreting NOx data indicative of an amount of NOx exiting an engine and an amount of NOx exiting an exhaust aftertreatment system coupled to the engine, determining a NOx conversion efficiency fault is present based on the amount of NOx exiting the engine and the amount of NOx exiting the exhaust aftertreatment system, and determining at least one of a selective catalytic reduction (SCR) catalyst of the exhaust aftertreatment system and a diesel particulate filter having a coating of a SCR reaction catalyst (DPF-SCR) of the exhaust aftertreatment system are responsible for the NOx conversion efficiency fault based on at least one of a reductant slip amount and a NOx conversion value across at least one of the SCR catalyst and the DPF-SCR.

Inventors:: Gupta, Aniket; Cunningham, Michael J.; Haas, Michael; Kothandaraman, Govindarajan

Issue Date:: 2020-08-11

Research Org.:: Cummins, Inc., Columbus, IN (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1735129

Patent Number(s):: 10738671

Application Number:: 15/866,776

Assignee:: Cummins Inc. (Columbus, IN)

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

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F - MECHANICAL ENGINEERING F01 - MACHINES OR ENGINES IN GENERAL F01N - GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL
F01N11/00 - Monitoring or diagnostic devices for exhaust-gas treatment apparatus {, e.g. for catalytic activity
F01N13/0093 - {the purifying devices are of the same type}
F01N2550/02 - Catalytic activity of catalytic converters
F01N2560/021 - for measuring or detecting ammonia NH3
F01N2560/026 - for measuring or detecting NOx
F01N2560/06 - the means being a temperature sensor
F01N2560/14 - having more than one sensor of one kind
F01N2610/02 - the substance being ammonia or urea
F01N2900/1402 - Exhaust gas composition
F01N2900/1616 - NH3-slip from catalyst
F01N2900/1621 - Catalyst conversion efficiency
F01N3/035 - with catalytic reactors {, e.g. catalysed diesel particulate filters}
F01N3/0835 - {Hydrocarbons}
F01N3/0842 - {Nitrogen oxides}
F01N3/103 - {Oxidation catalysts for HC and CO only}
F01N3/2066 - {Selective catalytic reduction [SCR]}

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02T - CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
Y02T10/12 - Technologies for the improvement of indicated efficiency of a conventional ICE
Y02T10/40 - Engine management systems

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DOE Contract Number:: EE0004125

Resource Type:: Patent

Resource Relation:: Patent File Date: 01/10/2018

Country of Publication:: United States

Language:: English

Subject:: 42 ENGINEERING

Citation Formats


                    Gupta, Aniket, Cunningham, Michael J., Haas, Michael, and Kothandaraman, Govindarajan. Diagnostic methods for a high efficiency exhaust aftertreatment system.  United States: N. p., 2020. 
        Web.

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                    Gupta, Aniket, Cunningham, Michael J., Haas, Michael, & Kothandaraman, Govindarajan. Diagnostic methods for a high efficiency exhaust aftertreatment system.  United States.

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                    Gupta, Aniket, Cunningham, Michael J., Haas, Michael, and Kothandaraman, Govindarajan. Tue .  
        "Diagnostic methods for a high efficiency exhaust aftertreatment system".  United States.  https://www.osti.gov/servlets/purl/1735129.

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@article{osti_1735129,

  title        = {Diagnostic methods for a high efficiency exhaust aftertreatment system},

  author       = {Gupta, Aniket and Cunningham, Michael J. and Haas, Michael and Kothandaraman, Govindarajan},

  abstractNote = {A method includes interpreting NOx data indicative of an amount of NOx exiting an engine and an amount of NOx exiting an exhaust aftertreatment system coupled to the engine, determining a NOx conversion efficiency fault is present based on the amount of NOx exiting the engine and the amount of NOx exiting the exhaust aftertreatment system, and determining at least one of a selective catalytic reduction (SCR) catalyst of the exhaust aftertreatment system and a diesel particulate filter having a coating of a SCR reaction catalyst (DPF-SCR) of the exhaust aftertreatment system are responsible for the NOx conversion efficiency fault based on at least one of a reductant slip amount and a NOx conversion value across at least one of the SCR catalyst and the DPF-SCR.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2020},

  month        = {8}

}

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Works referenced in this record:

Apparatus, system, and method for reducing NOx emissions on an SCR catalyst
patent, September 2012

Wills, Joan M.; Chi, John N.; Wang, Weiwen
US Patent Document 8,256,208
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/8256208

System and Method for Determining Selective Catalytic Reduction Dosing System Performance Using an Ammonia Sensor
patent-application, June 2012

Levijoki, Stephen Paul; Perrin, James M.
US Patent Application 12/965073; 2012/0144801
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Systems and Methods to Mitigate NOX and HC Emissions
patent-application, August 2015

Gupta, Aniket; Cunningham, Michael J.; Ruth, Michael J.
US Patent Application 14/600262; 2015/0240682
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20150240682

Soot Load Determination System
patent-application, March 2015

DeGeorge, John W.; Gardener, Timothy P.
US Patent Application 14/032665; 20150086426
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20150086426

Multi-Stage SCR Control and Diagnostic System
patent-application, April 2015

Qi, Baohua
US Patent Application 14/503414; 20150096287
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20150096287

Method for Operating a Reductant Metering Process of an SCR Catalytic Converter System, and Corresponding SCR Catalytic Converter System
patent-application, May 2015

Nigro, Giampaolo; Kosters, Martina; Dusterdiek, Thorsten
US Patent Application 14/405089; 20150147250
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Method for the Purification of Diesel Engine Exhaust Gases
patent-application, August 2015

Wittrock, Meike; Klein, Ulf; Leyh, Gerald
US Patent Application 14/622469; 20150231565
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Robust design of diagnostic enabling conditions for SCR NOx conversion efficiency monitor
patent, January 2012

Wang, Yue-Yun; Yanakiev, Ognyan N.; Solbrig, Charles E.
US Patent Document 8,091,416
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/8091416

Apparatus, system, and method for estimating deterioration of a NOx sensor response rate
patent, December 2012

Runde, Jeff; Lin, Xiao; Wilhelm, Daniel D.
US Patent Document 8,336,525
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/8336525

Exhaust Gas Aftertreatment Installation and Method
patent-application, July 2006

Bandl-Konrad, Brigitte; Hertzberg, Andreas; Krutzsch, Bernd
US Patent Application 10/541311; 20060153761
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20060153761

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Similar Records

Title: Diagnostic methods for a high efficiency exhaust aftertreatment system

Abstract

Citation Formats

Apparatus, system, and method for reducing NOx emissions on an SCR catalyst patent, September 2012

System and Method for Determining Selective Catalytic Reduction Dosing System Performance Using an Ammonia Sensor patent-application, June 2012

Systems and Methods to Mitigate NOX and HC Emissions patent-application, August 2015

Soot Load Determination System patent-application, March 2015

Multi-Stage SCR Control and Diagnostic System patent-application, April 2015

Method for Operating a Reductant Metering Process of an SCR Catalytic Converter System, and Corresponding SCR Catalytic Converter System patent-application, May 2015

Method for the Purification of Diesel Engine Exhaust Gases patent-application, August 2015

Robust design of diagnostic enabling conditions for SCR NOx conversion efficiency monitor patent, January 2012

Apparatus, system, and method for estimating deterioration of a NOx sensor response rate patent, December 2012

Exhaust Gas Aftertreatment Installation and Method patent-application, July 2006

Apparatus, system, and method for reducing NOx emissions on an SCR catalyst
patent, September 2012

System and Method for Determining Selective Catalytic Reduction Dosing System Performance Using an Ammonia Sensor
patent-application, June 2012

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patent-application, August 2015

Soot Load Determination System
patent-application, March 2015

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patent-application, April 2015

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patent-application, May 2015

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patent, January 2012

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patent, December 2012

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patent-application, July 2006