This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Prediction of NO Emissions from Stratified Charge Spark-Ignition Engines
Technical Paper
2002-01-1139
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
A thermodynamic model of spark ignition engine combustion, with multiple burned gas zones, has been extended to permit the different burned gas zones to have different mixture strengths. The NO formation is predicted in each burned gas zone using the extended Zeldovich mechanism. The model has been used to study stratified charge spark ignition engine combustion, in order to investigate the influence of overall equivalence ratio and degree of stratification on the NO emissions and the engine brake specific fuel consumption.
For fixed throttle operation, it is concluded that the best trade-off is with an overall weak mixture that is close to homogeneous. For maximum power output using a slightly rich of stoichiometric mixture, then the mixture should also be close to homogeneous. However, if the engine is constrained to operate with an overall stoichiometric mixture, then the trade-off between NO emissions and brake specific fuel consumption is with a stratified mixture that is rich at the spark plug.
Recommended Content
Authors
Citation
Stone, C., Wyszynski, L., and Raine, R., "Prediction of NO Emissions from Stratified Charge Spark-Ignition Engines," SAE Technical Paper 2002-01-1139, 2002, https://doi.org/10.4271/2002-01-1139.Also In
References
- Ricardo, H The Ricardo Story 2nd 1992 SAE
- Nahum, A. Foster-Pegg, R. W. Birch, D. The Rolls-Royce Crecy Rolls-Royce Heritage Trust, Historical Series No 21 Derby
- Ando, H. 1997 ‘Combustion Control Strategies for Gasoline Engines’ IMechE Seminar Publication Lean Burn Combustion Engines , Paper S433/001/96 3 17 London
- Zeldovich, Ya. B. ‘The oxidation of nitrogen in combustion and explosions’ Acta Physiochim U.R.S.S. 21 577 628 1946
- Lavoie, G.A. Heywood, J.B. Keck, J.C. ‘Experimental and theoretical study of nitric oxide formation in internal combustion engines’ Comb. Sci. and Technology 1 313 326 1970
- Heywood, J.B. Internal Combustion Engine Fundamentals McGraw-Hill Book Company New York 1988
- Dean, A M Bozelli, J. W. ‘Combustion Chemistry of Nitrogen’ Gas-Phase Combustion Chemistry Gardiner W. C. Springer Verlag New York 1999
- Bowman, C.T. 1975 ‘Kinetics of pollutant formation and destruction in combustion’ Prog. Energy and Combustion Science 1 33 45
- Hanson, R.K. Salimian, S. ‘Survey of rate constants in the N/H/O system’ Combustion Chemistry' Gardiner, W.C. Springer-Verlag 1984
- Miller, J. A. Bowman, C. T. ‘Mechanism and modelling of nitrogen chemistry in combustion’ Progress in Energy and Comb. Sc. 15 287 338 1989
- Raine, R R, Wyszynski, L. Stone, R. ‘Modelling Of NO emissions from Homogeneous and Stratified Charge Spark-Ignition Engines’ Proc I Mech E
- Raine, R.R. Stone, C.R. Gould, J. 1995 ‘Modeling of nitric oxide formation in spark ignition engines with a multizone burned gas’ Combustion and Flame 102 241 255 1995
- Ferguson, C. R. Internal Combustion Engines , Applied Thermosciences John Wiley and Sons, Inc. New York 1986
- Ball J K Stone C R Collings N ‘Cycle-by-Cycle Modelling of NO Formation and Comparison with Experimental Data’ Proc IMechE Part D 213D J Automotive Engg 175 189 London 1999
- Stone, R. Lim, E. P. Ewart, P. Lloyd, G. Williams, R. B. ‘Temperature and Heat Flux Measurements in a Spark Ignition Engine’ SAE Congress Paper 2000-01-1214 2000
- Zhao, F. Lai, M.-C. Harrington, D.L. “Automotive spark-ignited direct-injection gasoline engines” Progress in Energy and Combustion Science 25 437 562 1999