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Stationary NOx storage and reduction experiments on a heavy-duty diesel engine rig using a bypass system

Papadakis, Klaus LU ; Odenbrand, Ingemar LU and Creaser, Derek (2003) In Society of Automotive Engineers - Technical Paper Series p.117-122
Abstract
This work concerns exhaust gas cleaning for heavy-duty diesel engines by means of NOx storage and redn. technol. A full-scale engine rig has been constructed, and stationary NOx redn. tests performed. In the NOx storage and redn. approach, NOx is stored on a BaO surface as Ba(NO3)2 under long lean conditions and desorbed and reduced under short rich conditions. The rich conditions are created by injection of diesel fuel into the exhaust stream. The stationary NOx redn. tests have been performed at nine load points on an engine rig. They have shown that a stationary NOx redn. of between 25-53% is achievable at most load points depending on the temp. The high oxygen content in the exhaust gas leads to the oxidn. of the injected hydrocarbons... (More)
This work concerns exhaust gas cleaning for heavy-duty diesel engines by means of NOx storage and redn. technol. A full-scale engine rig has been constructed, and stationary NOx redn. tests performed. In the NOx storage and redn. approach, NOx is stored on a BaO surface as Ba(NO3)2 under long lean conditions and desorbed and reduced under short rich conditions. The rich conditions are created by injection of diesel fuel into the exhaust stream. The stationary NOx redn. tests have been performed at nine load points on an engine rig. They have shown that a stationary NOx redn. of between 25-53% is achievable at most load points depending on the temp. The high oxygen content in the exhaust gas leads to the oxidn. of the injected hydrocarbons and thus to a high fuel penalty. To lower the fuel consumption, the mass flow through the catalyst has been reduced under the regeneration periods. This was done using a bypass system with a pneumatic valve control. The extent of the reduced catalyst flow has been examd. (Less)
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published
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in
Society of Automotive Engineers - Technical Paper Series
pages
117 - 122
publisher
Society of Automotive Engineers
external identifiers
  • scopus:84877194466
ISSN
0099-5908
language
English
LU publication?
yes
id
c58681ab-a646-44c7-8c53-3267d877f744 (old id 141777)
alternative location
http://www.sae.org/technical/papers/2003-01-1884
http://volunteers.sae.org/
date added to LUP
2007-06-25 14:50:46
date last changed
2018-01-07 09:37:15
@article{c58681ab-a646-44c7-8c53-3267d877f744,
  abstract     = {This work concerns exhaust gas cleaning for heavy-duty diesel engines by means of NOx storage and redn. technol. A full-scale engine rig has been constructed, and stationary NOx redn. tests performed. In the NOx storage and redn. approach, NOx is stored on a BaO surface as Ba(NO3)2 under long lean conditions and desorbed and reduced under short rich conditions. The rich conditions are created by injection of diesel fuel into the exhaust stream. The stationary NOx redn. tests have been performed at nine load points on an engine rig. They have shown that a stationary NOx redn. of between 25-53% is achievable at most load points depending on the temp. The high oxygen content in the exhaust gas leads to the oxidn. of the injected hydrocarbons and thus to a high fuel penalty. To lower the fuel consumption, the mass flow through the catalyst has been reduced under the regeneration periods. This was done using a bypass system with a pneumatic valve control. The extent of the reduced catalyst flow has been examd.},
  author       = {Papadakis, Klaus and Odenbrand, Ingemar and Creaser, Derek},
  issn         = {0099-5908},
  language     = {eng},
  pages        = {117--122},
  publisher    = {Society of Automotive Engineers},
  series       = {Society of Automotive Engineers - Technical Paper Series},
  title        = {Stationary NOx storage and reduction experiments on a heavy-duty diesel engine rig using a bypass system},
  year         = {2003},
}