Study of using oxygen-enriched combustion air for locomotive diesel engines
- Argonne National Lab., IL (United States)
- Univ. of Michigan, Ann Arbor, MI (United States)
- Association of American Railroads, Washington, DC (United States)
A thermodynamic simulation is used to study the effects of oxygen-enriched intake air on the performance and nitrogen oxide (NO) emissions of a locomotive diesel engine. The parasitic power of the air separation membrane required to supply the oxygen-enriched air is also estimated. For a given constraint on peak cylinder pressure, the gross and net power output of an engine operating under different levels of oxygen enrichment are compared with those obtained when a high-boost turbocharged engine is used. A 4% increase in peak cylinder pressure can result in an increase in net engine power of approximately 13% when intake air with an oxygen content of 28% by volume is used and fuel injection timing is retarded by 4 degrees. When the engine is turbocharged to a higher inlet boost, the same increase in peak cylinder pressure can improve power by only 4%. If part of the significantly higher exhaust enthalpies available as a result of oxygen enrichment are recovered, the power requirements of the air separator membrane can be met, resulting in substantial net power improvements. Oxygen enrichment with its attendant higher combustion temperatures, reduces emissions of particulates and visible smoke but increases NO emissions (by up to three times at 26% oxygen content). Therefore, exhaust gas after-treatment and heat recovery would be required if the full potential of oxygen enrichment for improving the performance of locomotive diesel engines is to be realized.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 541060
- Report Number(s):
- CONF-9610275-; ISBN 0-7918-1516-1; TRN: IM9747%%166
- Resource Relation:
- Conference: 18. annual fall technical conference of the ASME Internal Combustion Engine Division, Fairborn, OH (United States), 20-23 Oct 1996; Other Information: PBD: 1996; Related Information: Is Part Of Natural gas engines, combustion, emissions and simulation: Volume 4. Proceedings of the 18. annual fall technical conference of the ASME Internal Combustion Engine Division; ICE-Volume 27-4; Caton, J.A. [ed.] [Texas A and M Univ., College Station, TX (United States)]; PB: 134 p.
- Country of Publication:
- United States
- Language:
- English
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Study of using oxygen-enriched combustion air for locomotive diesel engines
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