Method and apparatus to selectively reduce NO.sub.x in an exhaust gas feedstream
Abstract
A method and apparatus are described to selectively reduce NO.sub.x emissions of an internal combustion engine. An exhaust aftertreatment system includes an injection device operative to dispense a hydrocarbon reductant upstream of a silver-alumina catalytic reactor device. A control system determines a NO.sub.x concentration and hydrocarbon/NOx ratio based upon selected parameters of the exhaust gas feedstream and dispenses hydrocarbon reductant during lean engine operation. Included is a method to control elements of the feedstream during lean operation. The hydrocarbon reductant may include engine fuel.
- Inventors:
-
- Troy, MI
- Shelby Township, MI
- Sterling Heights, MI
- Macomb Township, MI
- Rochester Hills, MI
- Issue Date:
- Research Org.:
- GM Global Technology Operations LLC (Detroit, MI)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1023934
- Patent Number(s):
- 8006481
- Application Number:
- 11/533,434
- 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
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02A - TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- DOE Contract Number:
- FC26-02NT41218
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
Citation Formats
Schmieg, Steven J, Blint, Richard J, Den, Ling, Viola, Michael B, and Lee, Jong-Hwan. Method and apparatus to selectively reduce NO.sub.x in an exhaust gas feedstream. United States: N. p., 2011.
Web.
Schmieg, Steven J, Blint, Richard J, Den, Ling, Viola, Michael B, & Lee, Jong-Hwan. Method and apparatus to selectively reduce NO.sub.x in an exhaust gas feedstream. United States.
Schmieg, Steven J, Blint, Richard J, Den, Ling, Viola, Michael B, and Lee, Jong-Hwan. Tue .
"Method and apparatus to selectively reduce NO.sub.x in an exhaust gas feedstream". United States. https://www.osti.gov/servlets/purl/1023934.
@article{osti_1023934,
title = {Method and apparatus to selectively reduce NO.sub.x in an exhaust gas feedstream},
author = {Schmieg, Steven J and Blint, Richard J and Den, Ling and Viola, Michael B and Lee, Jong-Hwan},
abstractNote = {A method and apparatus are described to selectively reduce NO.sub.x emissions of an internal combustion engine. An exhaust aftertreatment system includes an injection device operative to dispense a hydrocarbon reductant upstream of a silver-alumina catalytic reactor device. A control system determines a NO.sub.x concentration and hydrocarbon/NOx ratio based upon selected parameters of the exhaust gas feedstream and dispenses hydrocarbon reductant during lean engine operation. Included is a method to control elements of the feedstream during lean operation. The hydrocarbon reductant may include engine fuel.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2011},
month = {8}
}
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Works referenced in this record:
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Selective Catalytic Reduction of NOx Emissions from a 5.9 Liter Diesel Engine Using Ethanol as a Reductant
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Selective Catalytic Reduction of NOx with N-Free Reductants
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