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}
}
Save to My Library
You must Sign In or Create an Account in order to save documents to your library.
Works referenced in this record:
Exhaust gas purification device for an internal combustion engine
patent, November 1999
- Kinugasa, Yukio; Itou, Takaaki; Suzuki, Naoto
- US Patent Document 5,974,793
Method for detecting assembled state of gas sensors and apparatus for detecting assembled state of gas sensors
patent, July 2009
- Kida, Yoshiaki
- US Patent Document 7,558,667
Passive Ammonia-Selective Catalytic Reduction for NOx Control in Internal Combustion Engines
patent-application, May 2010
- Brinkman, Norman; Najt, Paul; Narayanaswamy, Kushal
- US Patent Application 12/430819; 20100107605
Technique for Production of Ammonia on Demand in a Three Way Catalyst for a Passive Selective Catalytic Reduction System
patent-application, August 2010
- Narayanaswamy, Kushal; Najt, Paul M.
- US Patent Application 12/390588; 20100212295
Fuel Efficient Ammonia Generation Strategy for Lean-Burn Engines Utilizing Passive NH3-SCR for the Control of NOX
patent-application, August 2011
- Perry, Kevin L.; Li, Wei; Narayanaswamy, Kushal
- US Patent Application 13/049973; 20110202253