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Multidimensional Modelling of Knocking Combustion in SI Engines
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Abstract
A two-dimensional model for the simulation of flow and premixed combustion in engines is extended to include a knock sub-model. An autoignition model based upon a degenerately branched chain mechanism /14/ was modified for this purpose. Rapid-compression machine experiments could be reproduced as well as engine knocking tendencies. The coexistence of the new knock model and the overall combustion model of Arrhenius type was arranged by a suitable switch-off criterion for the autoignition reactions. Simulation of pressure waves and respective flowfields under knocking conditions are also shown to be possible. A parametric study of the influence of engine geometry, EGR and swirl on knocking tendency is presented.
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Schäpertöns, H. and Lee, W., "Multidimensional Modelling of Knocking Combustion in SI Engines," SAE Technical Paper 850502, 1985, https://doi.org/10.4271/850502.Also In
References
- Gupta, H.C. Steinberger, R.L. Bracco, F.V. “Combustion in a Divided Chamber, Stratified Charge, Reciprocating Engine: Initial Comparisons of Calculated and Measured Flame Propagation” Combustion Science and Technology 22 1980 27 61
- Lee, W. Schäfer, H.J. Schäpertöns, H. “Investigation of High Compression Ratio SI Engine by a Two-Dimensional Model” 5th International Automotive Propulsion System Symposium Dearborn, Michigan 14.-18 04 1980
- Giesecke, W. Gupta, H.C. Lee, W. Schäpertöns, H. “Mathematische Simulation der Verbrennung in einem Serienbrennraum eines Ottomotors” MTZ 42 1981 7/8
- Basso, A. Rinolfi, R. “Two-dimensional Computation of Engine Combustion - Comparison of Measurement and Prediction” SAE 820519
- Gosman, A.D. Johns, R.J.R. “Development of a Predictive Tool for In-Cylinder Gas Motion in Engines” SAE 780315
- Johns, R.J.R. “A Unified Method For Calculating Engine Flows” ASME-paper 84 - DGP-18
- Gosman, A.D. Tsui, Y.Y. Watkins, A.P. “Calculation of Three Dimensional Air Motion in Model Engines” SAE 840229
- Schäpertöns, H. Gupta, H.C. Lee, W. “Preliminary Attemps to Simulate Knocking in Spark Ignition Engines with a Two-dimensional Model” International Symposium on “Knocking of Combustion Engines” VW Wolfsburg 1981
- Wheeler, R.W. Downs, D. “Recent Developments in ‘Knock’-Research” Proc. Instn. Mech. Engrs., AD, Pt. III 1951-2 89 99
- Smith, J.R. Green, R.M. Westbrook, C.K. “An Experimental and Modelling Study of Engine Knock” Paper submitted to the 20th Combustion Symposium Ann Arbor, MI
- Fish, A. “Kalte Flammen von Kohlenwasserstoffen” Angewandte Chemie 1968 2 53 88
- McKay, G. “The Gas-Phase Oxidations of Hydrocarbons” Prog. Energy Combust. Sci. 3 1977 105 126
- Halstead, M.P. Kirsch, L.J. Prothero, A. Quin, C.P. “A Mathematical Model for Hydrocarbon Autoignition at High Pressures” Proc. R. Soc., London, A. 346 515 538 1975
- Halstead, M.P. Kirsch, L.J. Quin, C.P. “The Autoignition of Hydrocarbon Fuels at High Temperatures and Pressure - Fitting of a Mathematical Model” Combustion and Flame 30 45 60 1977
- By, A. Kempinsky, B. Rife, J.M. “Knock in Spark Ignition Engines” SAE 810147
- Schäpertöns, H. “Simulation von Klopfvorgängen mit einem zweidimensionalen mathematischen Modell” TH Aachen 1984
- Cox, R.A. “Chemical Aspects of the Autoignition of Hydrocarbon-Air Mixtures” Harwell AERE-R 11152
- Natarajan, B. Bracco, F.V. “On Multidimensional Modeling of Auto-Ignition in Spark-Ignition Engines” Combustion and Flame 57 179 197 1984
- Hirst, S.L. Kirsch, L.J. “The Application of a Hydrocarbon Autoignition Model in Simulation Knock and other Engine Combustion Phenomena” Combustion Modeling in Reciprocating Engines Amann C. Mattavi J. Plenum Press 1980