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Title: Combustion driven ammonia generation strategies for passive ammonia SCR system

Abstract

A method for controlling ammonia generation in an exhaust gas feedstream output from an internal combustion engine equipped with an exhaust aftertreatment system including a first aftertreatment device includes executing an ammonia generation cycle to generate ammonia on the first aftertreatment device. A desired air-fuel ratio output from the engine and entering the exhaust aftertreatment system conducive for generating ammonia on the first aftertreatment device is determined. Operation of a selected combination of a plurality of cylinders of the engine is selectively altered to achieve the desired air-fuel ratio entering the exhaust aftertreatment system.

Inventors:
; ; ;
Publication Date:
Research Org.:
GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1334661
Patent Number(s):
9,512,793
Application Number:
13/652,549
Assignee:
GM GLOBAL TECHNOLOGY OPERATIONS LLC (Detroit, MI)
DOE Contract Number:  
EE0003379
Resource Type:
Patent
Resource Relation:
Patent File Date: 2012 Oct 16
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; 54 ENVIRONMENTAL SCIENCES

Citation Formats

Toner, Joel G., Narayanaswamy, Kushal, Szekely, Jr., Gerald A., and Najt, Paul M. Combustion driven ammonia generation strategies for passive ammonia SCR system. United States: N. p., 2016. Web.
Toner, Joel G., Narayanaswamy, Kushal, Szekely, Jr., Gerald A., & Najt, Paul M. Combustion driven ammonia generation strategies for passive ammonia SCR system. United States.
Toner, Joel G., Narayanaswamy, Kushal, Szekely, Jr., Gerald A., and Najt, Paul M. 2016. "Combustion driven ammonia generation strategies for passive ammonia SCR system". United States. https://www.osti.gov/servlets/purl/1334661.
@article{osti_1334661,
title = {Combustion driven ammonia generation strategies for passive ammonia SCR system},
author = {Toner, Joel G. and Narayanaswamy, Kushal and Szekely, Jr., Gerald A. and Najt, Paul M.},
abstractNote = {A method for controlling ammonia generation in an exhaust gas feedstream output from an internal combustion engine equipped with an exhaust aftertreatment system including a first aftertreatment device includes executing an ammonia generation cycle to generate ammonia on the first aftertreatment device. A desired air-fuel ratio output from the engine and entering the exhaust aftertreatment system conducive for generating ammonia on the first aftertreatment device is determined. Operation of a selected combination of a plurality of cylinders of the engine is selectively altered to achieve the desired air-fuel ratio entering the exhaust aftertreatment system.},
doi = {},
url = {https://www.osti.gov/biblio/1334661}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Dec 06 00:00:00 EST 2016},
month = {Tue Dec 06 00:00:00 EST 2016}
}

Works referenced in this record: