This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Effect of Piston Bowl Shape and Swirl Ratio on Engine Heat Transfer in a Light-Duty Diesel Engine
Technical Paper
2014-01-1141
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
Heat transfer losses are one of the largest loss contributions in a modern internal combustion engine. The aim of this study is to evaluate the contribution of the piston bowl type and swirl ratio to heat losses and performance. A commercial CFD tool is used to carry out simulations of four different piston bowl geometries, at three engine loads with two different swirl ratios at each load point. One of the geometries is used as a reference point, where CFD results are validated with engine test data. All other bowl geometries are scaled to the same compression ratio and make use of the same fuel injection, with a variation in the spray target between cases. The results show that the baseline case, which is of a conventional diesel bowl shape, provides the best emission performance, while a more open, tapered, lip-less combustion bowl is the most thermodynamically efficient. The results also show that the response of the flow field, due to swirl variations, is not the same for all piston configurations and, therefore, the effects of swirl on heat transfer are not the same for all piston geometries.
Recommended Content
Authors
Topic
Citation
Fridriksson, H., Tuner, M., Andersson, O., Sunden, B. et al., "Effect of Piston Bowl Shape and Swirl Ratio on Engine Heat Transfer in a Light-Duty Diesel Engine," SAE Technical Paper 2014-01-1141, 2014, https://doi.org/10.4271/2014-01-1141.Also In
References
- Heywood , J.B. Internal Combustion Engine Fundamentals McGraw-Hill International Editions 1988
- Jaichandar , S. and Tamilporai , P. Low Heat Rejection Engines - An Overview SAE Technical Paper 2003-01-0405 2003 10.4271/2003-01-0405
- Wickman , D. , Senecal , P. , and Reitz , R. Diesel Engine Combustion Chamber Geometry Optimization Using Genetic Algorithms and Multi-Dimensional Spray and Combustion Modeling SAE Technical Paper 2001-01-0547 2001 10.4271/2001-01-0547
- Ge , H. , Shi , Y. , Reitz , R. , Wickman , D. et al. Engine Development Using Multi-dimensional CFD and Computer Optimization SAE Technical Paper 2010-01-0360 2010 10.4271/2010-01-0360
- 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
- Fridriksson , H. , Hajireza , S. , Tunér , M. and Sundén , B. A CFD Investigation of Heat Transfer in a Diesel Fueled PPC Engine Applying Design of Experiments ASME 2012 International Combustion Engine Division Fall Technical Conference Vancouver, BC, Canada September 23 26 2012 10.1115/ICEF2012-92059
- de Risi , A. , Donateo , T. , and Laforgia , D. Optimization of the Combustion Chamber of Direct Injection Diesel Engines SAE Technical Paper 2003-01-1064 2003 10.4271/2003-01-1064
- Cao , L. , Bhave , A. , Su , H. , Mosbach , S. et al. Influence of Injection Timing and Piston Bowl Geometry on PCCI Combustion and Emissions SAE Int. J. Engines 2 1 1019 1033 2009 10.4271/2009-01-1102
- Dolak , J. , Shi , Y. , and Reitz , R. A Computational Investigation of Stepped-Bowl Piston Geometry for a Light Duty Engine Operating at Low Load SAE Technical Paper 2010-01-1263 2010 10.4271/2010-01-1263
- Splitter , D. , Wissink , M. , Kokjohn , S. , and Reitz , R. Effect of Compression Ratio and Piston Geometry on RCCI Load Limits and Efficiency SAE Technical Paper 2012-01-0383 2012 10.4271/2012-01-0383
- Das , S. and Roberts , C. Factors Affecting Heat Transfer in a Diesel Engine: Low Heat Rejection Engine Revisited SAE Technical Paper 2013-01-0875 2013 10.4271/2013-01-0875
- Dempsey , A. , Walker , N. , and Reitz , R. Effect of Piston Bowl Geometry on Dual Fuel Reactivity Controlled Compression Ignition (RCCI) in a Light-Duty Engine Operated with Gasoline/Diesel and Methanol/Diesel SAE Int. J. Engines 6 1 78 100 2013 10.4271/2013-01-0264
- Andersson , Ö. , Somhorst , J. , Lindgren , R. , Blom , R. et al. Development of the Euro 5 Combustion System for Volvo Cars' 2.4.I Diesel Engine SAE Technical Paper 2009-01-1450 2009 10.4271/2009-01-1450
- Styron , J. , Baldwin , B. , Fulton , B. , Ives , D. et al. Ford 2011 6.7L Power Stroke® Diesel Engine Combustion System Development SAE Technical Paper 2011-01-0415 2011 10.4271/2011-01-0415
- Hashizume , T. , Ishiyama , S. , Ogawa , T. , Tomoda , T. et al. Low Cooling Heat Loss and High Efficiency Diesel Combustion using Restricted In-Cylinder Flow The Eighth International Conference on Modeling and Diagnostics for Advanced Engine Systems (COMODIA 2012) July 23 26 2012 Fukuoka, Japan
- Hanjalić , K. , Popovac , M. Hadžiabdić , M. A robust near-wall elliptic-relaxation eddy-viscosity turbulence model for CFD International Journal of Heat and Fluid Flow 25 6 December 2004 1047 1051 http://dx.doi.org/10.1016/j.ijheatfluidflow.2004.07.005
- Han , Z. , Reitz , R.D. A Temperature Wall Function Formulation for Variable-Density Turbulent Flows with Application to Engine Conservative Heat Transfer Modeling International Journal of Heat and Mass Transfer 40 613 625 1997
- Dukowicz , J.K. A Particle-Fluid Numerical Model for Liquid Sprays Journal of Computational Physics 35 2 229 253 1980
- Reitz , R.D. Modeling Atomization Process in High-Pressure Vaporizing Sprays Journal of Atomization Spray Technology 3 309 337 1987
- Dukowicz , J.K. Quasi-Steady Droplet Phase Change in the Presence of Convection Tech report Los Alamos Scientific Lag NM (USA) 1979
- Patel , A. , Kong , S. , and Reitz , R. Development and Validation of a Reduced Reaction Mechanism for HCCI Engine Simulations SAE Technical Paper 2004-01-0558 2004 10.4271/2004-01-0558
- Liang , L. , Stevens , J.G. , and Farrell , J.T. A Dynamic Mulit-Zone Partitioning Scheme for Solving Detailed Chemical Kinetics in Reactive Flow Computations Combustion Science and Technology 181 11 1345 1371 2009 10.1080/0010220090319836
- AVL FIRE v2013 - Emission Module AVL FIRE Documentation 2013
- Agafonov , G. , Nullmeier , M. , Vlasov , P. , Warnatz , J. et al. Kinetic modeling of solid carbon particle formation and thermal decomposition during carbon suboxide pyrolysis behind shock waves Combustion Science and Technology 174 5-6 2002 10.1080/713713036
- Appel , J. , Bockhorn , H. , Frenklach , M. Kinetic Modeling of Soot Formation with Detailed Chemistry and Physics: Laminar Premixed Flames of C2 Hydrocarbons Combustion and Flame 121 1-2 122 136 2000
- Evlampiev , A. , Frolov , S. , Basevich , V. , Belyaev , A. Chemical Physics Reports 20 1 21 27 2001
- Kiefer , J. , Sidhu , S. , Kern , R. , Xie , K. The Homogeneous Pyrolysis of Acetylene II: The High Temperature Radical Chain Mechanism Combustion Science and Technology 82 101 130 1992
- Krestinin , A. Detailed Modeling of Soot Formation in Hydrocarbon Pyrolysis Combustion and Flame 121 513 524 2000
- Wagner , H. , Vlasov , P. , Dörge , K. , Eremin , A. et al. The Kinetics of Carbon Cluster Formation during C3O2 Pyrolysis Kinetics and Catalysis 42 5 645 656 2001
- Wang , H. , Frenklach , M. A Detailed Kinetic Modeling Study of Aromatics Formation in Laminar Premixed Acetylene and Ethylene Flames Combustion and Flame 110 1-2 173 221 1997