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CFD parametric analysis of the combustion chamber shape in a small HSDI Diesel engine
Technical Paper
2005-32-0094
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English
Abstract
The paper aims at providing information about the influence of the combustion chamber shape on the combustion process evolution in a high speed direct injection (HSDI) small unit displacement engine for off-highway applications. Small HSDI Diesel engines require a deep optimisation process in order to maximize specific power output, while limiting pollutant emissions without additional expensive pollutant aftertreatment equipments. Making reference to a current production engine, the purpose of this paper is to investigate the influence of combustion chamber design on both engine performances and combustion efficiency. The actual piston omega-shape is progressively distorted in order to assess the influence of some of the main bowl-features on both mean-flow evolution, mixture formation and pollutants.
Using previously validated intake stroke CFD results as initial conditions, compression, injection and combustion simulations are performed in an attempt to trend the influence of bowl depth, bowl entrance angle, omega curvature radius and relative spray-bowl orientation on the engine performances and pollutants. Spray mixing effectiveness, combustion efficiency and NOx and Soot formation are used to compare the different geometries, operating the engine at high-speed full load.
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FONTANESI, S., GAGLIARDI, V., MALAGUTI, S., and MATTARELLI, E., "CFD parametric analysis of the combustion chamber shape in a small HSDI Diesel engine," SAE Technical Paper 2005-32-0094, 2005.Also In
References
- Senecal, P.K. Montgomery, D.T. Reitz, R.D. “A Methodology for Engine Design Using Multidimensional Modeling and Genetic Algorithms with Validation Through Experiments” International Journal of Engine Research 1 229 2000
- Senecal, P.K. Reitz, R.D. “Simultaneous Reduction of Engine Emissions and Fuel Consumption Using Genetic Algorithms and Multi-Dimensional Spray and Combustion Modeling” SAE 2000-01-1890 2000
- Wickman, D.D. Senecal, P.K. Reitz, R.D. “Diesel Engine Combustion Chamber Geometry Optimization Using Genetic Algorithms and Multi-Dimensional Spray and Combustion Modeling” SAE 2001-01-0547 2001
- Senecal, P.K. Pomraning, E. Richards, K.J. “Multi-Mode Genetic Algorithm Optimization of Combustion Chamber Geometry for Low Emissions” SAE 2002-01-0958 2002
- Tatschl, R. Gabriel, H.P. Priesching, P. “FIRE - A Generic CFD Platform for DI Diesel Engine Mixture Formation and Combustion Simulation.” International Multidimensional Modeling User's Group Meeting at the SAE Congress Detroit, U.S.A. 2001
- Mattarelli, E. Borghi, M. Balestrazzi, D. Fontanesi, F. “The Influence of Swirl Control Strategies on the Intake Flow in Four Valve HSDI Diesel Engines” SAE Paper 2004-01-0112 2004
- Mattarelli, E. Montorsi, L. Fontanesi, F. “Numerical Analysis of Swirl Control Strategies in a Four Valve HSDI Diesel engines” ICEF2004-909. Proceedings of ASME 2004 Fall Technical Conference
- Yakhot, V. Orszag, S.A. ‘Renormalization group analysis of turbulence - I: Basic theory’ J. Scientific Computing 1 1 51
- Yakhot, V. Orszag, S.A. Thangam, S. Gatski, T.B. Speziale, C.G. ‘Development of turbulence models for shear flows by a double expansion technique’ Phys. Fluids A4 7 1510 1520
- Versteeg, H. K. Malalasekera, W. “An introduction to computational fluid dynamics. The finite volume method” Longman 1995
- Allocca, L. Auriemma, M. Corcione, F.E. Valentino G. Fontanesi, S. Gagliardi, V. Malaguti, D. Riganti G. “Investigation of Mixture Formation Process in a HDDI Diesel Engine by CFD and Imaging Technique” SAE Paper 05-AE-270 , SAE 2005 World Congress Detroit (MI) April 2005
- Huh, K.Y. Gosman, A.D. ‘A phenomenological model of Diesel spray atomisation’ Proc. Int. Conf. on Multiphase Flows (ICMF '91) Tsukuba 24-27 September
- Reitz, R.D. Diwakar, R. ‘Effect of drop breakup on fuel sprays’ SAE Technical Paper Series 860469
- Reitz, R.D. Diwakar, R. ‘Structure of high-pressure fuel spray’ SAE Technical Paper Series 870598
- O'Rourke, P.J. “Collective Drop Effects on Vaporising Liquid Sprays” University of Princeton
- Bai, C. Gosman, A.D. ‘Development of methodology for spray impingement simulation’ SAE Technical Paper Series 950283
- Magnussen, B.F. Hjertager, B.W. ‘On the structure of turbulence and a generalised eddy dissipation concept for chemical reaction in turbulent flow’ 19th AIAA Aerospace Meeting St. Louis, USA
- Magnussen, B.F. Hjertager, B.H. ‘On mathematical modeling of turbulent combustion with special emphasis on soot formation and combustion’ 16th Symp. (Int.) on Combustion The Combustion Institute 719 729
- Abraham, J. Bracco, F.V. Reitz, R.D. ‘Comparison of computed and measured premixed charge engine combustion’ Combust. Flame 60 309 322
- Patterson, M.A. Kong, S.-C. Hampson, G.J. Reitz, R.D. ‘Modeling the effects of fuel injection characteristics on diesel engine soot and NOx emissions’ SAE Technical Paper Series 940523
- Müller, U.C. Peters, N. ‘Development of reduced reaction schemes for the ignition of Diesel fuels in a non-premixed turbulent flow field’ IDEA Project, Periodic Report No. 3
- Theobald, M.A. Cheng, W.K. ‘A numerical study of Diesel ignition’ Proc. ASME Energy-Sources Technology Conf. and Exhibit Dallas, Texas, USA 15-20 February Paper No. 87-FE-2
- Müller, U.C. Peters, N. ‘Development of reduced reaction schemes for the ignition of Diesel fuels in a non-premixed turbulent flow field’ IDEA Project, Periodic Report No. 4 154 177
- Müller, U.C. Peters, N. ‘Development of reduced reaction schemes for the ignition of Diesel fuels in a non-premixed turbulent flow field’ IDEA Project, Periodic Report No. 3 151 165
- Flower, W.L. Hanson, R.K. Kruger, C.H. ‘Kinetics of the reaction of nitric oxide with hydrogen’ 15th Symp. (Int.) on Combustion The Combustion Institute 823 832
- Monat, J.P. Hanson, R.K. Kruger, C.H. ‘Shock tube determination of the rate coefficient for the reaction N2 + O → NO + O’ 17th Symp. (Int.) on Combustion The Combustion Institute 543 552
- Baulch, D.L. Drysdall, D.D. Horne, D.G. Lloyd, A.C. “Evaluated Kinetic Data for High Temperature Reactions” Butterworth
- Westenberg, A.A. “Combustion Science and Technology”
- Karlsson, A. Magnusson, I. Balthasar, M. Mauss, F. ‘Simulation of soot formation under Diesel engine conditions using a detailed kinetic soot model’ Proc. SAE Int. Congr. and Expo. Detroit, Michigan, USA 23-26 February SAE Technical Paper Series 981022