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:
- Issue Date:
- 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
- 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.
Gupta, Aniket, Cunningham, Michael J., Haas, Michael, & Kothandaraman, Govindarajan. Diagnostic methods for a high efficiency exhaust aftertreatment system. United States.
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.
@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 = {Tue Aug 11 00:00:00 EDT 2020},
month = {Tue Aug 11 00:00:00 EDT 2020}
}
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