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:
- Issue Date:
- Research Org.:
- GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1334661
- Patent Number(s):
- 9512793
- Application Number:
- 13/652,549
- 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
F - MECHANICAL ENGINEERING F02 - COMBUSTION ENGINES F02D - CONTROLLING COMBUSTION ENGINES
- 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. Tue .
"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 = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Dec 06 00:00:00 EST 2016},
month = {Tue Dec 06 00:00:00 EST 2016}
}
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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