Study of Using Oxygen-Enriched Combustion Air for Locomotive Diesel Engines
Author:
Assanis D. N.1, Poola R. B.2, Sekar R.2, Cataldi G. R.3
Affiliation:
1. The University of Michigan, Ann Arbor, MI 48109 2. Argonne National Laboratory, Argonne, IL 60439 3. Association of American Railroads, Washington, D.C. 20019
Abstract
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 percent increase in peak cylinder pressure can result in an increase in net engine power of approximately 10 percent when intake air with an oxygen content of 28 percent 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 percent. If part of the significantly higher exhaust enthalpies available as a result of oxygen enrichment is 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 percent 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.
Publisher
ASME International
Subject
Mechanical Engineering,Energy Engineering and Power Technology,Aerospace Engineering,Fuel Technology,Nuclear Energy and Engineering
Reference23 articles.
1. Sekar, R. R., Marr, W. W., Cole, R. L., Marciniak, T. J., and Schaus, J. E., 1990, “Diesel Engine Experiments With Oxygen Enrichment, Water Addition, and Lower-Grade Fuel,” Twenty-Fifth Intersociety Energy Conversion Engineering Conference, Reno, Nevada. 2. Sekar, R. R., Marr, W. W., Assanis, D. N., Cole, R. L., Marciniak, T. J., and Schaus, J. E., 1991, “Oxygen-Enriched Diesel Engine Performance: A Comparison of Analytical and Experimental Results,” ASME J. Eng. Gas Turbines Power, 113, pp. 365–369. 3. Sekar, R. R., Marr, W. W., Cole, R. L., and Marciniak, T. J., 1991, “Effects of Oxygen Enrichment and Fuel Emulsification on Diesel Engine Performance and Emissions,” ASME Meeting on Fuels, Controls and After-treatment for Low-Emissions Engines, ICE, 15, pp. 21–28. 4. Marr, W. W., Sekar, R. R., Cole, R. L., Marciniak, T. J., and Longman, D. E., 1993, “Oxygen-Enriched Diesel Engine Experiments With a Low-Grade Fuel,” SAE Paper 932805. 5. Iida, N., and Sato, G. T., 1988, “Temperature and Mixing Effects on NOx and Particulates,” SAE Paper 880424.
Cited by
29 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献
|
|