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An Empirical SI Combustion Model Using Laminar Burning Velocity Correlations
ISSN: 0148-7191, e-ISSN: 2688-3627
Published May 11, 2005 by SAE International in United States
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Predictive simulation models are needed in order to exploit the full benefits of 1-D engine simulation. Simulation model alterations such as cam phasing affect the gas composition and gas state in the cylinders and have an effect on the combustion. Modelling of these effects is particularly important when the engine is knock limited. A knock model, able to phase the combustion towards the knock limit, was previously developed by the authors. A major challenge in such knock models is to predict the pressure and temperature evolution in the end-gas accurately through an adequate combustion model. The Wiebe function is often used to model the combustion in SI engine simulations, owing to its ease of use and computational efficiency. The Wiebe function simply imposes a curve shape for the fuel burn rate and the parameters are easily determined from calculated heat release. Detailed models of turbulent combustion also exist which require more knowledge or assumptions about combustion chamber turbulence. The combustion model proposed in this paper uses existing correlations of laminar burning velocity to predict the parameters of the Wiebe function relative to a base operating condition. The model aims at predicting combustion at high load operation. Experimental and simulation data from a gasoline fuelled 4-cylinder turbo charged port injected spark ignition engine are used to correlate the Wiebe function parameters dependence on laminar burning velocity.
CitationLindström, F., Ångström, H., Kalghatgi, G., and Möller, C., "An Empirical SI Combustion Model Using Laminar Burning Velocity Correlations," SAE Technical Paper 2005-01-2106, 2005, https://doi.org/10.4271/2005-01-2106.
SAE 2005 Transactions Journal of Fuels and Lubricants
Number: V114-4 ; Published: 2006-02-01
Number: V114-4 ; Published: 2006-02-01
- Livengood, J. C. and Wu, P. C.; Correlation of Autoignition Phenomenon in Internal Combustion Engines and Rapid Compression Machines; Fifth Symposium (International) on Combustion, pp. 347-356, 1955.
- Douaud, A. M. and Eyzat, P.; Four-Octane-Number Method for Predicting the Anti-Knock Behaviour of Fuels and Engines; SAE Technical paper series 780080.
- Hirst, S. L. and Kirsch, L. J.; The Application of a Hydrocarbon Autoignition Model in Simulating Knock and Other Engine Combustion Phenomena; in Combustion Modeling in Reciprocating Engines, edited by Mattavi J. N. and Amann C. A., Plenum Publishing, New York, 1980.
- Kalghatgi, G.T.; Early Flame Development in a Spark-Ignition Engine; Combustion and Flame 60 (1985) 299-308.
- Heywood, J. B.; Internal Combustion Engines Fundamentals; McGraw-Hill Series in Mechanical Engineering, McGraw-Hill 1988.
- Söderberg, F., Johansson, B. and Lindoff, B.; Wavelet Analysis of In-Cylinder LDV Measurements and Correlations Against Heat Release; SAE Technical Paper Series 980483.
- Wiebe, I.I.; The combustion speed in internal combustion piston engines; Collected works of piston engine research, Laboratory of Engines, Academy of Sciences, USSR, Moscow 1956. (Translated to English by Kiisa M., KTH 1993)
- Csallner, P.; Eine Methode zur Vorausberechnung der Ändrung des Brennverlaufes von Ottomotoren bei geänderten Betriebsbedingungen; München, Techn. Univ., Diss., 1981.
- Witt, A.; Analyse der thermodynamischen Verluste eines Ottomotors unter den Randbedingungen variabler Steuerzeiten; Graz, Techn. Univ., Diss., 1999.
- Bayraktar, H. and Durgun, O.; Development of an empirical correlation from combustion durations in spark ignition engines; Energy Conversion and Management 45 (2004) 1419-1431.
- Scharrer, O., Heinrich, C., Heinrich, M., Gebhard, P. and Pucher, H.; Predictive Engine Part Load Modeling for the Development of a Double Variable Cam Phasing (DVCP) Strategy; SAE Technical paper series 2004-01-0614.
- Vávra, J. and Takáts, M.; Heat Release Regression Model for Gas Fuelled SI Engines; SAE Technical paper series 2004-01-1462.
- van Nieuwstadt, M. J., Kolmanovsky, I. V., Brehob, D. and Haghgooie, M.; Heat Release Regressions for GDI Engines; SAE technical paper series 2001-01-0956.
- Elmqvist Möller, C., Grandin, B., Johansson, P. and Lindström, F.; Divided Exhaust Period - a gas exchange system for turbocharged SI engines; SAE technical paper series 2005-01-1150.
- Elmqvist, C., Lindström, F., Ångström, H.-E., Grandin, B. and Kalghatgi, G.T.; Optimizing Engine Concepts by Using a Simple Model for Knock Prediction; SAE Technical paper 2003-01-3123.
- Ångström, H.-E.; Cylinder Pressure Indicating with Multiple Transducers, Accurate TDC-Evaluating, Zero Levels and Analyse of Mechanical Vibrations; Conference paper, 3rd International Indicating Symposium, Mainz am Rhein, April 1998.