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Numerical Study of Effects of Piston Bowl Geometry on the Intake Generated Swirl in a PCCI Engine


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DOI: https://doi.org/10.15866/ireme.v9i2.5225

Abstract


Numerical investigations were conducted on a DI diesel engine modified to be run as a premixed charge compression ignition engine to determine its flow field near TDC. A three dimensional CFD analysis was done on a typical diesel engine and validated against experimental data. The standard bowl was compared with modified bowl 2 and 3. It is seen that while Bowl 2 was able to generate higher swirl, bowl 3 generated a slightly higher turbulence at TDC. Hence this bowl is more suitable for use in diesel and a detailed spray and combustion analysis will provide more insight into the actual pollutant formation and combustion.
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Keywords


PCCI Engine; CFD; IC Engine; Piston Geometry

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References


Heywood, J. B. (1988). Internal Combustion Engine Fundamentals”, McGraw-Hill.

Warnatz, J, Maas, U, & Dibble, R. W. (2001). Combustion: Physical and ChemicalFundamentals, Modeling and Simulation, Experiments, Pollutant Formation”, 3rd Edition, Springer, New York.

A. P. Morse, J. H. Whitelaw and M. Yianneskis, Turbulent flow measurement by Laser Doppler Anemometry in a motored piston-cylinder assemblies, J. Fluids Engg., 101 (2) (1979) 208-216.
http://dx.doi.org/10.1115/1.3448937

F. Payri, J. M. Desantes and J. V. Pastor, LDV measurements of the flow inside the combustion chamber of a 4-valve DI Diesel engine with axisymmetric piston bowls, Exp Fluids, 22 (1996) 118-128.
http://dx.doi.org/10.1007/s003480050029

Anderson J.D., Computational Fluid Dynamics – The Basics with Applications, McGraw Hill Publications

Horibe, N., Komizo, T., Sumimoto, T., Wang, H. et al., "Smoke Reduction Effects by Post Injection for Various Injection Parameters and Combustion Chamber Shapes in a Diesel Engine," SAE Technical Paper 2014-01-2634, 2014, doi:10.4271/2014-01-2634.
http://dx.doi.org/10.4271/2014-01-2634

de Boer, C. and Grigg, D., "Gasoline Engine Combustion — The Nebula Combustion Chamber," SAE Technical Paper 885148, 1988, doi:10.4271/885148.
http://dx.doi.org/10.4271/885148

Lin, L., Shulin, D., Jin, X., Jinxiang, W. et al., "Effects of Combustion Chamber Geometry on In-Cylinder Air Motion and Performance in DI Diesel Engine," SAE Technical Paper 2000-01-0510, 2000, doi:10.4271/2000-01-0510.
http://dx.doi.org/10.4271/2000-01-0510

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, doi:10.4271/2014-01-1141.
http://dx.doi.org/10.4271/2014-01-1141

Ladommatos, N., Balian, R., and Stone, R., "Analysis of Swirl in Unsteady Flow and its Effect on Diesel Combustion," SAE Technical Paper 921643, 1992, doi:10.4271/921643.
http://dx.doi.org/10.4271/921643

Dakhore, R., Gandhi, N., Gokhale, N., Aghav, Y. et al., "Effect of Piston Cavity Geometry on Combustion, Emission and Performance of a Medium Duty DI Diesel Engine," SAE Technical Paper 2015-26-0198, 2015, doi:10.4271/2015-26-019
http://dx.doi.org/10.4271/2015-26-0198

Kawashima, J., Ogawa, H., and Tsuru, Y., "Research on a Variable Swirl Intake Port for 4-Valve High-Speed DI Diesel Engines," SAE Technical Paper 982680, 1998, doi:10.4271/982680.
http://dx.doi.org/10.4271/982680

Saito, T., Daisho, Y., Uchida, N., and Ikeya, N., "Effects of Combustion Chamber Geometry on Diesel Combustion," SAE Technical Paper 861186, 1986, doi:10.4271/861186.
http://dx.doi.org/10.4271/861186

Prasad,C.S. Sharma,T.N.C. Anand,R.V. Ravikrishna High swirl-inducing piston bowls in small diesel engines for emission reduction Applied Energy Volume 88, Issue 7, July 2011, Pages 2355–2367.
http://dx.doi.org/10.1016/j.apenergy.2010.12.068

Antony Raj GnanaSagaya Raj, JawaliMaharudrappaMallikarjuna, VenkitachalamGanesan Energy efficient piston configuration for effective air motion-A CFD study Applied Energy, Volume 102, February 2013, Pages 347-354.
http://dx.doi.org/10.1016/j.apenergy.2012.07.022


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