This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Multi-Zone Models of Combustion and Heat Transfer Processes in SI Engines
ISSN: 0148-7191, e-ISSN: 2688-3627
Published June 09, 2011 by SAE International in United States
Annotation ability available
The paper is focused on simulation of high-pressure part of thermodynamic cycle in a four-stroke spark ignition engine. The main author's ambition is to create the fast and sufficiently accurate multi-zone simulating tool working on the basis of simple quasi-dimensional method reflecting a real 3-D combustion chamber geometry and using the specific approach to transfer and transformation of species. The introduced procedure combines a classical kinetic scheme with the flexible Holub's method for chemical equilibrium to solve serious numerical issues resulting from chemical kinetics itself. But for the present, the current version model uses just fast chemical kinetics with direct transformation of reactants to chemical equilibrium state. New code is able to work in predictive or inverse mode as well.
Real 3-D combustion chamber geometry is taken into account by means of in advance created geometrical characteristics to save a computational time during the simulation. New tool, developed in AutoLisp programming language environment, can be used for evaluation of data tables with particular zone volumes and combustion chamber total volume, areas of border surfaces between zones and heat transfer areas between particular zones and parts creating combustion chamber border.
The predictive model version is suitable for the usage inside the environment of early-stage engine development systems, linking the combustion chamber geometry with the rate of heat release prediction, nitrogen oxides emissions and the future prediction of knocking resistance. The boundary conditions for a preliminary design of combustion chamber components and other combustion chamber features are determined as well. Selected three-zone model results concerning spark ignition version of AVIA engine are presented here.
The inverse model version is to be combined with experimental data to determine or verify the important fuel properties, namely the turbulent flame velocity. In this case, one two-zone model output using measured data from ŠKODA engine is presented.
CitationHvezda, J., "Multi-Zone Models of Combustion and Heat Transfer Processes in SI Engines," SAE Technical Paper 2011-37-0024, 2011, https://doi.org/10.4271/2011-37-0024.
- Bozza, F. and Gimelli, A., “A Comprehensive 1D Model for the Simulation of a Small-Size Two-Stroke SI Engine,” SAE Technical Paper 2004-01-0999, 2004, doi:10.4271/2004-01-0999.
- Li, X., Mikulec, T., Dai, W., and Qian, X., “A Generic Methodology for Chamber Flame Geometry Modeling,” SAE Technical Paper 2000-01-2797, 2000, doi:10.4271/2000-01-2797.
- Lakshminarayanan, P. and Dent, J., “Generalised Procedure for Flame and Combustion Chamber Surface Determination in S I Engines,” SAE Technical Paper 821223, 1982, doi:10.4271/821223.
- Sung, N. and Jun, S., “The Effect of Combustion Chamber Geometry in a SI Engine,” SAE Technical Paper 972996, 1997, doi:10.4271/972996.
- Poulos, S. and Heywood, J., “The Effect of Chamber Geometry on Spark-Ignition Engine Combustion,” SAE Technical Paper 830334, 1983, doi:10.4271/830334.
- Macek, J., Steiner, T., “Advanced Multizone Multidimensional Models of Engine Thermoaerodynamics”, 21th CIMAC Congress 1995, Interlaken 1995.
- Conte, E. and Boulouchos, K., “A Quasi-Dimensional Model for Estimating the Influence of Hydrogen-Rich Gas Addition on Turbulent Flame Speed and Flame Front Propagation in IC-SI Engines,” SAE Technical Paper 2005-01-0232, 2005, doi:10.4271/2005-01-0232.
- Tinaut, F., Melgar, A., and Horrillo, A., “Utilization of a Quasi-Dimensional Model for Predicting Pollutant Emissions in SI Engines,” SAE Technical Paper 1999-01-0223, 1999, doi:10.4271/1999-01-0223.
- Tinaut, F., Giménez, B., Horrillo, A., and Cabaco, G., “Use of Multizone Combustion Models to Analyze and Predict the Effect of Cyclic Variations on SI Engines,” SAE Technical Paper 2000-01-0961, 2000, doi:10.4271/2000-01-0961.
- Jensen, T. and Schramm, J., “A Three-Zone Heat Release Model for Combustion Analysis in a Natural Gas SI Engine. -Effects of Crevices and Cyclic Variations on UHC Emissions,” SAE Technical Paper 2000-01-2802, 2000, doi:10.4271/2000-01-2802.
- AI-Himyary, T. and Karim, G., “A Diagnostic Two-Zone Combustion Model for Spark-Ignition Engines Based on Pressure-Time Data,” SAE Technical Paper 880199, 1988, doi:10.4271/880199.
- Hajireza, S., Sundén, B., and Mauss, F., “A Three-Zone Model for Investigation of Gas Behavior in the Combustion Chamber of SI Engines in Relation to Knock,” SAE Technical Paper 1999-01-0219, 1999, doi:10.4271/1999-01-0219.
- “GT-Power, User's Manual and Tutorial”, GT-Suite TM version 6.2., Gamma Technologies Inc., 2006.
- Macek, J., “Současné Řešení Chemické Kinetiky a Rovnováhy”, Faculty of Mechanical Engineering, Czech Technical University in Prague, Prague 2008.
- Metghalchi, M., Keck, J. C., “Laminar Burning Velocity of Propane-Air Mixtures at High Temperature and Pressure”, Combustion and Flame, New York 1980.
- Holub, R., “Chemická Rovnováha Plynných Reakcí”, Academia, Praha 1972.
- Bečka, J., “Programování pro CAD I”, Vydavatelství ČVUT, Praha 1996.
- Vávra, J., Macek, J., Vítek, O., and Takáts, M., “Investigation of Radial Turbocharger Turbine Characteristics under Real Conditions,” SAE Technical Paper 2009-01-0311, 2009, doi:10.4271/2009-01-0311.
- Heywood, J. B., “Internal Combustion Engine Fundamentals”, McGraw-Hill, London 1988.