Low temperature combustion is identified as one of the pathways to meet the mandatory ultra low emissions levels set by the regulatory agencies. Exhaust gas recirculation (EGR) is a well known technique to realize low emissions. However, EGR has many built-in adverse ramifications that negate its advantages in the long term. This paper discusses nitrogen enrichment of intake air using air separation membranes as a better alternative to the mature EGR technique. This investigation was undertaken to determine the maximum acceptable level of nitrogen enrichment of air for a single-cylinder spark-ignited natural gas engine. reduction as high as 70% was realized with a modest 2% nitrogen enrichment while maintaining power density and simultaneously improving fuel conversion efficiency (FCE). Any enrichment beyond this level degraded engine performance in terms of power density, FCE, and unburned hydrocarbon emissions. The effect of ignition timing was also studied with and without enrichment. Finally, lean burn versus stoichiometric operation utilizing nitrogen enrichment was compared. Analysis showed that lean burn operation along with nitrogen enrichment is one of the effective pathways for realizing better FCE and lower emissions.
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January 2010
Technical Briefs
Low Temperature Combustion Using Nitrogen Enrichment to Mitigate From Large Bore Natural Gas Fueled Engines
Munidhar S. Biruduganti
,
Munidhar S. Biruduganti
Argonne National Laboratory
, Argonne, IL 60439
Search for other works by this author on:
Sreenath B. Gupta
,
Sreenath B. Gupta
Argonne National Laboratory
, Argonne, IL 60439
Search for other works by this author on:
Raj Sekar
Raj Sekar
Argonne National Laboratory
, Argonne, IL 60439
Search for other works by this author on:
Munidhar S. Biruduganti
Argonne National Laboratory
, Argonne, IL 60439
Sreenath B. Gupta
Argonne National Laboratory
, Argonne, IL 60439
Raj Sekar
Argonne National Laboratory
, Argonne, IL 60439J. Eng. Gas Turbines Power. Jan 2010, 132(1): 014502 (4 pages)
Published Online: October 2, 2009
Article history
Received:
September 22, 2008
Revised:
September 30, 2008
Published:
October 2, 2009
Citation
Biruduganti, M. S., Gupta, S. B., and Sekar, R. (October 2, 2009). "Low Temperature Combustion Using Nitrogen Enrichment to Mitigate From Large Bore Natural Gas Fueled Engines." ASME. J. Eng. Gas Turbines Power. January 2010; 132(1): 014502. https://doi.org/10.1115/1.3125301
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