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Introducing Initial Conditions with Non-uniform Mixtures and Fuel Injection into the Multi Zone HCCI Simulation Model
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 12, 2010 by SAE International in United States
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As a contribution to the research into HCCI engines which have a potential of achieving low fuel consumption with low particulate and low NOx emissions, a six zone simulation model coupled with the cycle simulation code AVL Boost was previously developed. The model uses comprehensive chemical kinetics and shows good agreement with experimental results. At the point of transition from the gas exchange process to the high pressure cycle, which is multi-zonal, the model assumes equal gas mixtures in all zones. Therefore, the model is suitable for perfectly homogeneous mixtures, and since it has no ability to receive fuel during compression, the mixture has to be prepared outside the cylinder. Further development of this model, which will be shown in this paper, includes the introduction of initial conditions with non-uniform mixtures and the possibility of receiving fuel during compression. This means that at the intake valve closure, the model will be able to calculate different mass fractions of species in different zones. Non-uniform gas mixtures will be defined by input parameters from the user of the calculation. These parameters can be obtained with more detailed CFD calculations of the gas exchange process. Also, a possibility of introducing fuel during the compression stroke will allow the user to simulate engines with direct injection of fuel. Besides the description of a physical and a mathematical model, which is used for the expansion of model possibilities, and besides validation results of the perfectly homogeneous engine, some results of calculations with non-uniform mixtures and fuel injection are shown. Based on the analysis of these results, conclusions regarding the achieved improvement are drawn.
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CitationKozarac, D., Sjeric, M., and Mahalec, I., "Introducing Initial Conditions with Non-uniform Mixtures and Fuel Injection into the Multi Zone HCCI Simulation Model," SAE Technical Paper 2010-01-1083, 2010, https://doi.org/10.4271/2010-01-1083.
Kinetically Controlled CI Combustion and Controls, 2010
Number: SP-2280 ; Published: 2010-04-13
Number: SP-2280 ; Published: 2010-04-13
- Onishi, S., Jo, S. H., Shoda, K., Jo, P. D. and Kato, S., “Active Thermo-Atmosphere Combustion - A New Combustion Process for Internal Combustion Engines,” SAE Technical Paper 790501, 1979.
- Noguchi, M., Tanaka, Y, Tanaka, T. and Takeuchi, Y., “A Study on Gasoline Engine Combustion by Observation of Intermediate Reactive Products During Combustion,” SAE Technical Paper 790840, 1979.
- Aceves, S. M., Flowers, D. L., Westbrook C. K., Smith J. R., Dibble, R. W., Christensen, M., Pitz, W. J. and Johansson, B., “A Multi-Zone Model for Prediction of HCCI Combustion and Emissions,” SAE Technical Paper 2000-01-0327, 2000.
- Kozarac, D., Mahalec, I. and Lulić, Z., “Analysis of Influence of Crevice Volume and Cylinder Wall Temperature on HC and CO Emission from HCCI Engine by Using a Newly Developed Multi Zone Model,” presented at COMODIA 2008, July 28 - 31 2008, proceedings, p.305-314, JSME No.08-202.
- Kozarac, D., “Multi Zone Combustion Model of HCCI Engines with use of Chemical Kinetics,” Ph.D. thesis, Faculty of Mechanical Engineering and Naval Architecture, University of Zagreb, Zagreb, 2008.
- Ogink, R. and Golovitchev, V., “Gasoline HCCI Modeling: Computer Program Combining Detailed Chemistry and Gas Exchange Processes,” SAE Technical Paper 2001-01-3614, 2001.
- Fiveland, S. B. and Assanis, D. N., “Development and Validation of a Quasi-Dimensional Model for HCCI Engine Performance and Emissions Studies Under Turbocharged Conditions,” SAE Technical Paper 2002-01-1757, 2002.
- Noda, T. and Foster, D. E., “A Numerical Study to Control Combustion Duration of Hydrogen-fueled HCCI by Using Multi-zone Chemical Kinetics Simulation,” SAE Technical Paper 2001-01-0250, 2001.
- Aceves, S. M., Martinez-Frias, J., Flowers, D. L., Smith, J. R. and Dibble, R. W., “A Decoupled Model of Detailed Fluid Mechanics Followed by Detailed Chemical Kinetics for Prediction of Iso-Octane HCCI Combustion,” SAE Technical Paper 2001-01-3612, 2001.
- Aceves, S. M., Flowers, D. L., Espinosa-Loza, F., Babajimopoulos, A and Assanis, D. N., “Analysis of Premixed Charge Compression Ignition Combustion with a Sequential Fluid Mechanics-Multizone Chemical Kinetics Model,” 2005-01-0115, 2005.
- Ogink, R. and Golovitchev, V. “Gasoline HCCI Modeling: An Engine Cycle Simulation Code with a Multi-Zone Combustion Model,” SAE Technical Paper 2002-01-1745, 2002.
- Babajimopoulos, A., Lavoie, G. A. and Assanis, D. N., “Modeling HCCI Combustion with High Levels of Residual Gas Fraction - A Comparison of Two VVA Strategies”, SAE Technical Paper 2003-01-3220, 2003.
- Komninos, N. P., Hountalas, D. T. and Kouremenos, D. A., “Description of In-cylinder Combustion Processes in HCCI Engines Using a Multi-zone Model,” SAE Technical Paper 2005-01-0171, 2005.
- Kongsereeparp, P. and Checkel, M. D., “Novel Method of Setting Initial Conditions for Multi-zone HCCI Combustion Modeling,” SAE Technical Paper 2007-01-0674, 2007.
- Woschni, G., “Einfluß von Rußablagerungen auf den Wärmeübergang zwischen Arbeitsgas und Wand im Dieselmotor”, proceedings of “Der Arbeitsprozeß des Verbrennungsmotors”, Graz 1991.
- Boost v 5.1.1. Users Guide, AVL, July 2008.
- Heywood, J. B., Internal Combustion Engine Fundamentals, McGraw-Hill, Singapore, ISBN: 0-07-100499-8, 1988.
- Dec, J. E. and Sjöberg, M., “A Parametric Study of HCCI Combustion - the Sources of Emissions at Low Loads and the Effects of GDI Fuel Injection,” SAE Technical Paper 2003-01-0752, 2003.
- Aceves, S.M., Flowers, D.L., Espinoza-Loza, F., Martinez-Frias, J., Dec, J.E., Sjöberg, M., Dibble, R.W., and Hessel, R.P., “Spatial Analysis of Emissions Sources for HCCI Combustion at Low Loads Using a Multi-Zone Model,” SAE Technical Paper 2004-01-1910, 2004.
- Chen, Y. H. and Chen, J. Y., “Development of Isooctane Skeletal Mechanisms for Fast and Accurate Predictions of SOC and Emissions of HCCI Engines based on LLNL Detailed Mechanism,” presented at 2005 Fall Meeting Western States Combustion Institute, Stanford, CA, October 17-18, 2005.
- Kozarac, D., Mahalec, I. and Sagi, G., “Characteristics of Combustion of Ethanol Fuelled HCCI Engine,” presented at 9th International Conference and Exhibition IAT'09, Nova Gorica, Slovenia, April 23 - 24, 2009.
- Oakley, A., Zhao, H., Ma, T. and Ladommatos, N. “Dilution Effects on the Controlled Auto-Ignition (CAI) Combustion of Hydrocarbon and Alcohol Fuels,” SAE Technical Paper 2001-01-3606, 2001.
- Galovic, A., Termodinamika I, FSB, Zagreb, ISBN: 953-6313-44-8, 2002.
- Dibble, R., Au, M., Girard, J. W., Aceves, S. M., Flowers, D. L. and Martinez-Frias, J., “Current Research in HCCI Combustion at UC Berkeley and LLNL,” SAE Technical Paper 2001-01-2511, 2001.
- Kong, S. C., Marriott, C. D., Reitz, R. D. and Christensen, M., “Modeling and Experiments of HCCI Engine Combustion Using Detailed Chemical Kinetics with Multidimensional CFD,” SAE Technical Paper 2001-01-1026, 2001.