Study of using oxygen-enriched combustion air for locomotive diesel engines

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A thermodynamic simulation is used to study effects of O2-enriched intake air on performance and NO emissions of a locomotive diesel engine. Parasitic power of the air separation membrane required to supply the O2-enriched air is also estimated. For a given constraint on peak cylinder pressure, gross and net power output of an engine operating under different levels of O2 enrichment are compared with those obtained when a high-boost turbocharged engine is used. A 4% increase in peak cylinder pressure can result in 13% increase in net engine power when intake air with 28 vol% O2 is used and fuel ... continued below

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11 p.

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Poola, R.B.; Sekar, R.; Assanis, D.N. & Cataldi, G.R. October 1, 1996.

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A thermodynamic simulation is used to study effects of O2-enriched intake air on performance and NO emissions of a locomotive diesel engine. Parasitic power of the air separation membrane required to supply the O2-enriched air is also estimated. For a given constraint on peak cylinder pressure, gross and net power output of an engine operating under different levels of O2 enrichment are compared with those obtained when a high-boost turbocharged engine is used. A 4% increase in peak cylinder pressure can result in 13% increase in net engine power when intake air with 28 vol% O2 is used and fuel injection timing retarded by 4 degrees. When the engine is turbocharged to a higher inlet boost, the same increase in peak cylinder pressure can result in only 4% improvement in power. If part of the higher exhaust enthalpies from the O2 enrichment is recovered, the power requirements of the air separator membrane can be met. O2 enrichment with its higher combustion temperatures reduces emissions of particulates and visible smoke but increases NO emissions (by up to 3 times at 26% O2 content). Therefore, exhaust gas after-treatment and heat recovery would be required if the full potential of O2 enrichment for improving the performance of locomotive diesel engines is to be realized.

Physical Description

11 p.

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OSTI as DE96015072

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  • American Society of Mechanical Engineers (ASME) and Metals materials week, Cincinnati, OH (United States), 6-10 Oct 1996

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  • Other: DE96015072
  • Report No.: ANL/ES/CP--90529
  • Report No.: CONF-961017--7
  • Grant Number: W-31109-ENG-38
  • DOI: 10.2172/399725 | External Link
  • Office of Scientific & Technical Information Report Number: 392758
  • Archival Resource Key: ark:/67531/metadc674816

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  • October 1, 1996

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  • July 25, 2015, 2:20 a.m.

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  • Dec. 16, 2015, 5:38 p.m.

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Poola, R.B.; Sekar, R.; Assanis, D.N. & Cataldi, G.R. Study of using oxygen-enriched combustion air for locomotive diesel engines, article, October 1, 1996; Illinois. (digital.library.unt.edu/ark:/67531/metadc674816/: accessed September 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.