THERMAL SCIENCE

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Liang Zhang

,

Zhixia He

,

Qian Wang

,

Genmiao Guo

EFFECT OF NOZZLE HOLE SIZE COUPLING WITH EXHAUST GAS RE-CIRCULATION ON THE ENGINE EMISSION PERFOMANCE BASED ON KH-ACT SPRAY MODEL

ABSTRACT
To research an effective measure of reducing the Soot and NOx in engine at the same time, different nozzle hole diameters coupled with exhaust gas recirculation (EGR) were adopted in this study based on KH-ACT spray breakup model, which takes the aerodynamic-induced ,cavitation-induced and turbulence-induced breakup into account. The SAGE detailed chemistry combustion and the new atomization model used in the simulation have been verified with the experiment data from a YN4100QBZL engine. Different diesel nozzles was adopted in the study combined with different EGR rates ranging from 0% to 40%. The simulation results show that the NOx emission could be reduced effectively for both small(0.1mm) and large(0.15mm) diesel nozzle when increasing EGR ratio. The soot emission increases for the small nozzle hole size as the EGR increasing. However, when it comes to the large diesel nozzle, the emission increases slightly first and decrease quickly when the EGR rate above 20%.
KEYWORDS
diesel engine, atomization, emission, nozzle diameter, EGR
PAPER SUBMITTED: 2015-04-17
PAPER REVISED: 2015-11-20
PAPER ACCEPTED: 2015-11-30
PUBLISHED ONLINE: 2015-12-13
DOI REFERENCE: https://doi.org/10.2298/TSCI150417182Z
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2015, VOLUME 19, ISSUE Issue 6, PAGES [2003 - 2012]
REFERENCES
  1. M. Bolla, D. Farrace, Y. M. Wright, and K. Boulouchos, Fuel, vol. 117, pp. 309-325, 2014
  2. Majewski WA,K hair MK. Diesel emissions and their control. Warrendale, PA:SAE International;2006.
  3. Johnson TV. Diesel emission control in review;2009.sae Paper 2009-01-0121.
  4. X. Wang and W. Su, "Numerical investigation on relationship between injection pressure fluctuations and unsteady cavitation processes inside high-pressure diesel nozzle holes," Fuel, vol. 89, pp. 2252-2259, 2010.
  5. W. Zhang, Z. Chen, W. Li, G. Shu, B. Xu, and Y. Shen, "Influence of EGR and oxygen-enriched air on diesel engine NO-Smoke emission and combustion characteristic,"Applied Energy, vol. 107, pp. 304-314, 2013.
  6. L. Labecki, A. Lindner, W. Winklmayr, R. Uitz, R. Cracknell, and L. Ganippa, "Effects of injection parameters and EGR on exhaust soot particle number-size distribution for diesel and RME fuels in HSDI engines,"Fuel, vol. 112, pp. 224-235, 2013.
  7. Youngjae Lee,Kang Y. Huh. Analysis of different modes of low temperature combustion by ultra-high EGR and modulated kinetics in a heavy duty diesel engine
  8. Montgomery DT, Reitz RD. Effects of multiple injections and flexible control of boost and egr on emissions and fuel consumption of a heavy-duty diesel engine. SAE paper 2001-01-0195; 2001.
  9. X. Wang, Z. Huang, W. Zhang, O. A. Kuti, and K. Nishida, "Effects of ultra-high injection pressure and micro-hole nozzle on flame structure and soot formation of impinging diesel spray," Applied Energy, vol. 88, pp. 1620-1628, 2011.
  10. J. Gao, S. Moon, Y. Zhang, K. Nishida, and Y. Matsumoto, "Flame structure of wall-impinging diesel fuel sprays injected by group-hole nozzles," Combustion and Flame, vol. 156, pp. 1263-1277, 2009.
  11. H. Hiroyasu, M. Arai, Structures of Fuel Sprays in Diesel Engines, SAE paper 900475, 1990.
  12. B.S. Kim, W.H. Yoon, S.H. Ryu, J.S. Ha, Effect of the Injector Nozzle Hole Diameter and Number on the Spray Characteristics and the Combustion Performance in Medium-Speed Diesel Marine Engines, SAE paper 2005-01-3853, 2005.
  13. J. Benajes, S. Molina, K. De Rudder, D. Maroteaux, H. Ben Hadj Hamouda, Proc.I MECH E Part D: J. Automobile Eng. 220 (2006) 1807-1817.
  14. D. Siebers, B. Higgins, Flame Lift-off on Direct-Injection Diesel Sprays under Quiescent Conditions, SAE paper 2001-01-0530, 2001.
  15. P. Bergstrand, I. Denbrantt, Diesel Combustion with Reduced Nozzle Orifice Diameter, SAE paper 2001-01-2010, 2001.
  16. J. Benajes, S. Molina, C. González, and R. Donde, "The role of nozzle convergence in diesel combustion," Fuel, vol. 87, pp. 1849-1858, 2008.
  17. Y. Lee and K. Y. Huh, "Analysis of different modes of low temperature combustion by ultra-high EGR and modulated kinetics in a heavy duty diesel engine,"Applied Thermal Engineering, vol. 70, pp. 776-787, 2014.
  18. Han,Z. and Reitz,R.D.,"turbulence modeling of internal combustion engines using RNG models,"comb. Sci.Tech.,Vol.106,pp.,1995
  19. O'Rourke,P.J.,"collective drop effects on vaporizing liquid sprays,"Ph.D.Thesis, Princeton University,1981.
  20. S. Som and S. K. Aggarwal, "Effects of primary breakup modeling on spray and combustion characteristics of compression ignition engines," Combustion and Flame, vol. 157, pp. 1179-1193, 2010.
  21. K.Y. Huh, A.D. Gosman, in: Proceedings of the international conference ofmulti-phase flows, pp. 515-518, 1991.
  22. G.M. Bianchi, P. Pelloni, F.E. Corcione, L. Alloca, F. Luppino, J. Eng. Gas Turb.Power 123 (2001) 419-427.
  23. A.A. Amsden, P.J. O‘‘Rourke, T.D. Butler, KIVA-II: A Computer Program forChemically Reactive Flows with Sprays, Los Alamos National LaboratoryReport No. LA-11560-MS, 1989.
  24. E.C. Brennen, Cavitation and Bubble Dynamics, Oxford University Press,1995.
  25. Heywood,J.B. Internal Combustion Engine Fundamentables, McGraw Hill,Inc.,1988.
  26. Hiroyasu,H. and Kadota,T."Models for combustion and formation of nitric oxide and soot in DI diesel engiens ,"SAE Paper No.760129,1976.
  27. Warnatz J, Mass U., Dibble RW. Combustion: physical and chemical fundamentals, modeling and simulaton , Experiments, Pollutant Formation. springer, Berlin,Germany,2001.
  28. Bockhorn H,Soot formation in combustion : Mechanisms and Models. Springer,Berlin,Germany,1994.
  29. Asay, R., Svensson, K., and Tree, D., "An Empirical, Mixing-Limited, Zero-Dimensional Model for Diesel Combustion," SAE Technical Paper 2004-01-0924, 2004.
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Effect of nozzle hole size coupling with exhaust gas re-circulation on the engine emission perfomance based on KH-ACT spray model

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence