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NO Decomposition in Diesel Engines
Technical Paper
1999-01-3546
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Recent measurements of NOx emissions from a 2.2L HSDI Diesel engine have suggested that NO decomposition may be important at high load [1]. In interpretation of these data, Mellor et al. [2] determined that the nitrous oxide and extended Zeldovich mechanisms are both important pathways for NO formation and decomposition. To further examine the importance of NO decomposition in Diesels, results from tests that involve the injection of pure NO into the intake air of a 2.4L HSDI Diesel are presented.
The effects of engine speed and load on the relative importance of NO decomposition are directly discernable from graphs of engine–out NOx versus engine–in NO for speed and load sweeps. The importance of NO decomposition is found to increase with engine load, while engine speed exhibits a tradeoff. Furthermore, the results indicate that the reverse of the Zeldovich mechanism dominates the NO decomposition process. Findings from similar tests on an IDI Diesel and a SI engine also reveal that the reverse of the Zeldovich mechanism dominates the NO decomposition process and the importance of NO decomposition increases with equivalence ratio, as in the present tests.
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Authors
Citation
Easley, W. and Mellor, A., "NO Decomposition in Diesel Engines," SAE Technical Paper 1999-01-3546, 1999, https://doi.org/10.4271/1999-01-3546.Also In
References
- Duffy, K. P. Mellor, A. M. 1998 “Further developments on a characteristic time model for NO x emissions from Diesel engines,” SAE Paper 982460
- Mellor, A. M. Mello, J. P. Duffy, K. P. Easley, W. L. Faulkner, J. C. 1998 “Skeletal mechanism for NO x chemistry in Diesel engines,” SAE Paper 981450
- Lavoie, G. A. Heywood, J. B. Keck, J. C. 1970 “Experimental and theoretical study of nitric oxide formation in internal combustion engines,” Combust. Sci. Tech. 1 313 326
- Blumberg, P. Kummer, J. T. 1971 “Prediction of NO formation in spark–ignited engines – an analysis of methods of control,” Combust. Sci. Tech. 4 73 95
- Aiman, W. 1973 “A critical test for models of the nitric oxide formation process in spark–ignition engines,” Fourteenth Symposium (International) on Combustion The Combustion Institute Pittsburgh 861 870
- Voiculescu, I. A. Borman, G. L. 1978 “An experimental study of Diesel engine cylinder–averaged NO x histories,” SAE Paper 780228
- Chan, T. T. Borman, G. L. 1982 “An experimental study of swirl and EGR effects on Diesel combustion by use of the dumping method,” SAE Paper 820359
- Donahue, R. J. Borman, G. L. Bower, G. R. 1994 “Cylinder–averaged histories of nitrogen oxide in a DI Diesel with simulated turbocharging,” SAE Paper 942046
- Ahmad, T. Plee, S. L. 1983 “Application of flame temperature correlations to emissions from a direct–injection Diesel engine,” SAE Paper 831734
- Plee, S. L. Ahmad, T. Myers, J. P. Siegla, D. C. 1981 “Effects of flame temperature and air–fuel mixing on emission of particulate carbon from a divided–chamber Diesel engine,” Particulate Carbon – Formation During Combustion Siegla, D. C. Smith, G. W. Plenum Press New York 423 487
- Dec, J. E. Canaan, R. E. 1998 “PLIF imaging of NO formation in a DI Diesel engine,” SAE Paper 980147
- Stoffels, G. G. M. vand den Boom, E. J. Spaanjaars, C. M. I. Dam, N. Meerts, W. L. ter Meulen, J. J. Duff, J. L. C. Rickeard, D. J. 1999 “In–cylinder measurements of NO formation in a Diesel engine,” SAE Paper 1999–01–1487
- Nakagawa, H. Endo, H. Yoshihiro, D. Noda, M. Oikawa, H. Shimada, T. 1997 “NO measurement in Diesel spray flame using laser induced fluorescence,” SAE Paper 970874
- Malte, P. C. Pratt, D. T. 1974 “The role of energy–releasing kinetics in NO x formation: fuel lean, jet–stirred CO–air combustion,” Combust. Sci. Tech. 9 221 231
- Nicol, D. G. Malte, P. C. Steele, R. C. 1994 “Simplified models for NO x production rates in lean–premixed combustion,” ASME Paper No. 94–GT–432
- Polifke, W. Dobbeling, K. Sattelmayer, T. Nicol, D. Malte, P. 1995 “A NO x prediction scheme for lean–premixed gas turbine combustion based on detailed chemical kinetics,” ASME Paper No. 95–GT–108
- Primus, R. J. 1999 “Visual thermodynamics: processes in log(p) – log(T) space,” SAE Paper 1999–01–0516
- Lancaster, D. R. Krieger, R. B. Lienesch, J. H. 1975 “Measurement and analysis of engine pressure data,” SAE Paper 750026
- Easley, W. L. 1999 “Nitric oxide decomposition in direct injection Diesel engines,” Dept. Mech. Eng., Vanderbilt University