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IMPROVEMENT OF EMISSIONS AND PERFORMANCE BY USING OF AIR JET, EXHAUST GAS RE-CIRCULATION AND INSULATION METHODS IN A DIRECT INJECTION DIESEL ENGINE

ABSTRACT
This article investigates the improvement of operation characteristics and emissions reduction by means of creating an air-cell inside the piston body, exhaust gases recirculating and insulating combustion chamber in a direct injection diesel engine simultaneously. The engine considered is a caterpillar 3401 which was modeled with an air-cell included as part of the piston geometry. This air-cell demonstrates that air injection in late combustion period can be effective in a significant reduction of Soot emission while cold EGR can be effective in reduction of NOx emission. Also for increasing of performance parameters, combustion chamber with air-cell is insulated. The analyses are carried out at part (75% of full load) and full load conditions at the same engine speed 1600 rpm. The obtained results indicate that creating the air-cell has a slight effect on improvement of performance parameters and it has significantly effect on Soot reduction. The air-cell decreases the Soot pollutant as a factor of two at both part and full load conditions. Also, the adding 5% of cold EGR in inlet air decreases NOx by about half and insulating the engine increases the power and IMEP by about 7.7% and 8.5% and decreases the ISFC by about 7.5% at part load and increases power and IMEP by 8.5%, 8.5% and decreases ISFC by 8% at full load condition, respectively. Using this method, it was possible to control emissions formation and increase performance parameters simultaneously. The predicted results for mean in-cylinder pressure and emissions are compared to the corresponding experimental results and show good agreements.
KEYWORDS
PAPER SUBMITTED: 2011-11-01
PAPER REVISED: 2012-01-08
PAPER ACCEPTED: 2012-02-04
DOI REFERENCE: https://doi.org/10.2298/TSCI120108029J
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2013, VOLUME 17, ISSUE 1, PAGES [57 - 70]
REFERENCES
  1. A. Uludogan, D. E. Foster, and R. D. Reitz "Modeling the Effect of Engine Speed on the Combustion Process and Emissions in a DI Diesel Engine", SAE paper 962056.
  2. J.B. Heywood, "Internal combustion engine fundamental." McGraw Hill Book Company, New York, 1988.
  3. A.D. Gosman. "Computer modeling of flow and heat transfer in engines, progress and prospects", Imperil College of Science and Technology, London, 1985.
  4. R. Jeske Felix, etc., "Modeling of the natural gas injection process in a two-stroke diesel engine", SAE Paper 920192.
  5. 5. Choi Wook, etc., "In-cylinder flow field analysis of a single cylinder DI diesel engine using PIV and CFD", SAE Paper 2003-01-1846.
  6. Kawazoe, H. Nagano, S. and Ohsawa K., "Reduction of Soot Emission by Air-Jet Turbulence Generator with Cam in a Diesel Engine", JSAE Review, Vol. 12, No. 3, 1991.
  7. Susumu Nagano, Hiromitsu Kawazoe, and Katsuyuki Ohsawa, "Reduction of Soot Emission by Air-Jet Turbulence in a DI Diesel Engine", SAE Paper 912353, 1991
  8. C. Y. Choi, D. E. Foster, "In cylinder augmented mixing through controlled gaseous jet injection", SAE Paper 952358, 1995
  9. A. Uludogan, J. Xin, R. D. Reitz," Exploring the use of multiple injectors and split injection to reduce DI diesel engine emissions," SAE Paper 962058, 1996
  10. R. D. Reitz, D. T. Montgomery, "Six-mode cycle evaluation of the effect of EGR and multiple injections on particulate and NOx emissions from a D.I. diesel engine," SAE Paper 960316, 1996
  11. D. K. Mather, R. D. Reitz, " Modeling the use of air-injection for emissions reduction in a direct-injected diesel engine," SAE Paper 952359, 1995.
  12. E.M.Kurtz,D.E.Foster "Identifying a critical time for mixing in a direct injection diesel engine through the study of increased in-cylinder mixing and its effect on emissions", International Journal of Engine Research, June 1, 2004; vol. 5, 3: pp. 247- 256.
  13. Volker Joergl,Michael Becker "Application of Concentric Cam Shafts to a Passenger Car Diesel Engine to Significantly Improve the NOx /Soot Tradeoff",SAE paper 2011-24-0134,2011.
  14. R. Kamo, W. Bryzik, "Cummins/Tacom Advanced Adiabatic Engine", SAE Paper 840428, 1984
  15. Walter Bryzik, Roy Kamo, "Tacom/Cummins Adiabatic Engine Program", SAE Paper 830314, 1983
  16. R. Kamo, W. Bryzik, "Ceramics in Heat Engines", SAE Paper 790645, 1979
  17. R. R. Sekar, R. Kamo, J. C. Wood, "Advanced Adiabatic Diesel Engine for Passenger Cars", SAE Paper 840434, 1984
  18. Van Sudhakar, "Performance Analysis of Adiabatic Engine", SAE Paper 840431, 1984
  19. Hideo Kawamura, Akira Higashino, Shigeo Sekiyama, "Combustion and Combustion Chamber for a Low Heat Rejection Engine", SAE Paper 960506, 1996
  20. Wai K. Cheng, Victor W. Wong, Fuquan Gao, "Heat Transfer Measurement Comparisons in Insulated and Non- Insulated Diesel Engines", SAE Paper 890570, 1989
  21. Robert E. Hetrick, Larry W. Cathey, "Vibrational Sensor Based on Fluid Damping Mechanisms", SAE Paper 900489,1990
  22. Ekrem Buyukkaya, Muhammet Cerit, "Thermal analysis of a ceramic coating diesel engine piston using 3-D finite element method", Surface & Coatings Technology 202 (2007) 398-402
  23. Dennis Assanis and Kevin Wiese, Ernest Schwarz, Waiter Bryzik, "The Effects of Ceramic Coatings on Diesel Engine Performance and Exhaust Emissions", SAE Paper 910460, 1991
  24. I. TaymazT, K. C¸ akVr, A. Mimaroglu, "Experimental study of effective efficiency in a ceramic coated diesel engine", Surface & Coatings Technology 200 (2005) 1182- 1185
  25. Yiming Wang, Changlin Yang, Guocai Shu, Yincheng Ju, Kuihan Zhao, "An Observation of High Temperature Combustion Phenomenon in Low-Heat-Rejection Diesel Engines", SAE paper 940949, 1994
  26. 6. Zhengbai Liu and Xinqun Gui "Investigation of Effects of Piston Bowl and Fuel Injector Offsets on Combustion and Emissions in D.I. Diesel Engines" International Truck and Engine Corp. SAE paper 2002-01-1748.
  27. AVL FIRE user manual V. 8.5; 2006.
  28. Han Z., Reitz R. D., "Turbulence Modeling of Internal Combustion Engines Using RNG K-e Models", Combustion Science and Technology, Vol. 106, pp.267-295., 1995.
  29. . Liu AB, Reitz RD., "Modeling the effects of drop drag and break-up on fuel sprays", SAE Paper NO. 930072; 1993.
  30. . Dukowicz JK., "Quasi-steady droplet change in the presence of convection", informal report Los Alamos Scientific Laboratory. LA7997-MS.
  31. . Naber JD, Reitz RD., "Modeling engine spray/wall impingement", SAE Paper NO. 880107, 1988.
  32. . Halstead M, Kirsch L, Quinn C., "The Auto ignition of hydrocarbon fueled at high temperatures and pressures - fitting of a mathematical model", Combustion Flame 30 (1977): 45-60.
  33. A. R. Binesh, and S. Hossainpour, "Three Dimensional Modeling of Mixture Formation and Combustion in a Direct Injection Heavy-Duty Diesel Engine", International Journal of Mechanical, Industrial and Aerospace Engineering 2:4 2008.
  34. Miller, J. A. and Bowman, C. T.: Mechanism and Modeling of Nitrogen Chemistry in Combustion, Prog. Energy and Combust. Sci, vol. 15, pp 287-338, 1989.
  35. Carsten Baumgarten, "Mixture formation in internal combustion engines", Springer publications 2006.

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