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The Effect of Combustion Chamber Geometry in a SI Engine
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English
Abstract
A combustion model for a spark-ignition engine has been developed in order to study the effect of combustion chamber geometry. The model is based on the two-zone quasi-dimensional analysis. For this model, flame front area is calculated from engine geometry and the spark location. Also, a turbulent entrainment model is used to find burning rate.
The model has been calibrated and validated by the experimental data for a pentroof type engine. It has been shown that the model is successful in predicting combustion characteristics at the stoichiometric air/fuel ratio. From this model, the effects of bowl in a piston have been investigated and the optimum bowl size for the combustion is determined. Finally, the effects of the spark plug location, cylinder head type, and piston head shape on combustion process have been examined by the model.
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Sung, N. and Jun, S., "The Effect of Combustion Chamber Geometry in a SI Engine," SAE Technical Paper 972996, 1997, https://doi.org/10.4271/972996.Also In
References
- Mattavi, J. N. “The Attributes of Fast Burning Rates in Engines” SAE Paper 800920 1980
- Heywood, J. B. Higgios, J. M. Watta, P. A. Tabaczynski, R. J. “Development and Use of a Cycle Simulation to Predict SI Engine Efficiency and NO x Emissions” SAE Paper 790291 1979
- Heywood, J. B. Internal Combustion Engine Fundamentals McGraw-Hill New York 1988
- Blizard, N. C. Keck, J. C. “Experimental and Theoretical Investigation of Turbulent Burning Model for Internal Combustion Engines” SAE Paper 740191 SAE Trans. 83 1974
- Hires, S. D. Tabaczynski, R. J. Novak, J. M. “The Prediction of Ignition Delay and Combustion Intervals for a Homogeneous Charge, Spark Ignition Engine” SAE Paper 780232 1978
- Tabaczynski, R. J. Ferguson, C. R. Radhakrishnan, K. “A Turbulent Entrainment Model for Spark-Ignition Engine Combustion” SAE Paper 770647 SAE Trans. 86 1977
- Lucas, G. C. Brunt, M. F. I. “The Effect of Combustion Chamber Shape on the Rate of Combustion in a Spark Ignition Engine” SAE Paper 820165 1982
- Davis, G. C. Borgnakke, C. “The Effect of In-Cylinder Flow Processes (Swirl, Squish, and Turbulence Intensity) on Engine Efficiency-Model Predictions” SAE Paper 820045 1982
- Poulos, S. G. Heywood, J. B. “The Effect of Chamber Geometry on Spark-Ignition Engine Combustion” SAE Paper 830334 SAE Trans. 92 1983
- Assanis, D. N. Heywood, J. B. “Development and Use of a Computer Simulation of the Turbocompounded Diesel System for Engine Performance and Component Heat Transfer Studies” SAE Paper 860329 SAE Trans. 95 1986
- Filipi, Z. Assanis, D. N. “On determining the Optimum Stroke-to-Bore Ratio for a Spark Ignition Engine of Given Displacement” CSAT 1996
- Matthews, R. D. Hall, M. J. Davis, G. C. “Combustion Modeling in SI Engines with a Peninsula-Fractal Combustion Model” SAE Paper 960072 1996
- Kang, K. Sung, N. W. “Cycle Simulation for a Spark Ignition Engine Using a Turbulent Combustion Model” SAE Paper 872154 1987
- Ramos, J. I. Internal Combustion Engine Modeling Hemisphere Publishing 1989
- Woschni, G. “A Universally Applicable Equation for the Instantaneous Heat Transfer Coefficient in the Internal Combustion Engine” SAE Paper 670931 1967
- Mansouri, S. H. Heywood, J. B. “Divided-Chamber Diesel Engines, Part 1: A Cycle-Simulation Which Predicts Performance and Emissions” SAE Paper 820273 SAE Trans. 91 1982
- Tabaczynski, R. J. Trinker, F. H. Shannon, B. A. “Further Refinement and Validation of a Turbulent Flame Propagation SI Engine Efficiency and NO x Emissions” SAE Paper 790291 1979
- Tennekes, H. Lumley, J. L. A First Course in Turbulence 2nd MIT 1973
- Mansouri, S. H. Heywood, J. B. “Correlations for the Viscosity and Prandtl Number of Hydrocarbon-Air Combustion Products” Combustion Science and Technology 23 251 256 1980
- Martin, M. K. Heywood, J. B. “Approximate Relationships for the Thermodynamic Properties of Hydrocarbon-Air Combustion Products” Combustion Science and Technology 15 1 10 1977
- Chapra, S. C. Canale, R. P. Numerical Methods for Engineers McGraw-Hill 1988
- Lee, J. W. “The Development of Intake Port and Combustion Chamber Design Technology” KIMM 1996
- Fanser, T. D. “Turbulence Production and Relaxation in Bowl-in-Piston Engines” SAE Paper 930479 1993