Journal of the Korean Society of Combustion (한국연소학회지)

The Korean Society of Combustion (한국연소학회)
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Effects of Engine Loads on Exhaust Emissions and Particulate Matter with Morphological Characteristics in a Common Rail 4 Cylinder Diesel Engine

  • Roh, Hyun-Gu (Induk, University, Department of Mechanical & Automobile Engineering) ;
  • Choi, Seuk-Cheun (Korea Instititute of Industrial Technology, Korea National Cleaner Production Center, Green Management Planning Office) ;
  • Lee, Chang-Sik (Hanyang, University, Department of Mechanical Engineering)
  • Received : 2009.11.25
  • Accepted : 2010.07.05
  • Published : 2010.09.30
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Abstract

The purpose of this paper is to investigate the effects of fuel injection strategy and engine load on the structure and emissions characteristics of a DI diesel engine with 1.6L of piston displacement. In order to analyze the particulate matter (PM) and exhaust emissions characteristics in a direct injection diesel engine, the quantity of PM and exhaust emissions (including HC, CO and $NO_X$) were investigated under various injection strategies and engine loads. Two different injection strategies (one pilot/main injection and two pilots/main injection) was investigated under the various engine loads. A thermophoretic sampling method with a scanning electron microscope (SEM) were used to obtain the PM morphology (including primary particles, the size of the agglomerates, the number of agglomerates, the fractal dimension). The quantity of soot gradually increased with increasing engine load at both injection strategies. The primary particles in the PM agglomerates indicate that the average of the primary particle and radius of gyration increased as the engine load increased.

Keywords

References

  1. Harris, S. J., Maricq, M. M., "Signature size distributions for diesel and gasoline engine exhaust particulate matter", Journal of Aerosol Science, Vol. 32, No. 6, 2001, 749-764 https://doi.org/10.1016/S0021-8502(00)00111-7
  2. Kennedy, I. M., "The health effects of combustion generated aerosols", Proc. Combust. Inst., Vol. 31, No. 2, 2007, 2757-2770 https://doi.org/10.1016/j.proci.2006.08.116
  3. U. S. Environmental Protection Agency, "Health assessment document for diesel", rept.2002, Washington DC, EPA/600/8-90/057F
  4. U. S. Department of Energy, "Annual Energy Outlook 2006 with projections to 2030", 2006, DOE/ EIA-0383
  5. Tong, H. Y., Hung, W. T., Cheung. C. S., "On- Road Motor Vehicle Emissions and Fuel Consumption in Urban Driving Conditions", J. Air & Waste Manage. Assoc., Vol. 50, No. 4, 2000, 543-554 https://doi.org/10.1080/10473289.2000.10464041
  6. Agarwal, A. K., "Biodiesel Development and Characterization for Use as a Fuel in Compression Ignition Engines", Transactions of the ASME, Vol. 123, No, 2, 2001, 440-447
  7. Flower W. L., Bowman, C. T., "Measurements of the Structure of Sooting Laminar Diffusion Flames at Elevated Pressures", Proc. Combust. Inst., Vol. 20, No. 1, 1984, 1035-1044
  8. Zhu, J., Lee, K., Panov, A., Akers J., Habeger, C., "An Investigation of Particulate Morphology, Microstructures, and Fractal Geometry for ael Diesel Engine-Simulating Combustor", SAE paper, 2004, 2004-01-3044
  9. Zhu, J., Lee, K. O., Yozgatligil, A., Choi, M. Y., "Effects of engine operating conditions on morphology, microstructure, and fractal geometry of light-duty diesel engine particulates", Proc. Combust. Inst., Vol. 30, No. 2, 2005, 2781-2789 https://doi.org/10.1016/j.proci.2004.08.232
  10. Neer, A., Koylu, U. O., "Effect of operating conditions on the size, morphology, and concentration of submicrometer particulates emitted from a diesel engine", Combust. Flame., Vol. 146, No. 1-2, 2006, 142-154 https://doi.org/10.1016/j.combustflame.2006.04.003
  11. Kim, M. Y., Yoon, S. H., Lee, C. S., "Impact of Split Injection Strategy on the Exhaust Emissions and Soot Particulates from a Compression Ignition Engine Fueled with Neat Biodiesel", Energy & Fuels, Vol. 22, No, 1, 2008, 1260-1265 https://doi.org/10.1021/ef700537w
  12. Musculus, M. P. B., "Measurements of the influence of Soot Radiation on In-Cylinder Temperatures and Exhaust NOx in a Heavy-Duty DI Diesel Engine", SAE Paper, 2005, 2005-01-0925
  13. Kim, M. Y., Yoon, S. H., Park, K. H., Lee, C. S., "Effect of Multiple Injection Strategies on the Emission Characteristics of Dimethyl Ether (DME)- Fueled Compression Ignition Engine", Energy & Fuels, Vol. 21, No. 5, 2007, 2673-2681 https://doi.org/10.1021/ef0701844
  14. Manzello, S. M., Choi, M. C., "Morphology of soot collected in microgravity droplet flames", International Journal of Heat and Mass Transfer, Vol. 45, No. 5, 2002, 1109-1116 https://doi.org/10.1016/S0017-9310(01)00164-8
  15. Chandler, M. F., Teng, Y., Koylu U. O., "Diesel engine particulate emissions: A comparison of mobility and microscopy size measurements", Proc. Combust. Inst., Vol. 31, No. 2, 2007, 2971-2979 https://doi.org/10.1016/j.proci.2006.07.200
  16. Hu, B., Yang, B., Koylu U. O., "Soot measurements at the axis of an ethylene/air non-premixed turbulent jet flame", Combust. Flame., Vol. 134, No. 1-2, 2003, 93-106 https://doi.org/10.1016/S0010-2180(03)00085-3
  17. Onischuk, A. A., Stasio, S. D., Karasev, V. V., Baklanov, A. M., Makhov, G. A., Vlasenko, A. L., Sadykova, A. R., Shipovalov, A. V., Panfilov, V. N., "Evolution of structure and charge of soot aggregates during and after formation in a propane/air diffusion flame", Journal of Aerosol Science, Vol. 34, No. 4, 2003, 383-403 https://doi.org/10.1016/S0021-8502(02)00215-X
  18. Böhm, H., Feldermann, C., Heidermann, T., Jander, H., Lüers, B., Wagner, H. G., Soot formation in premixed C2H4 - air flames for pressures up to 100bar Proc. Combust. Inst., Vol. 24, No. 1, 1992, 991-998 https://doi.org/10.1016/S0082-0784(06)80117-7
  19. Su, D. S., Muller, J. O., Jentoft, R. E., Rothe, D. Jacob, E., Schlogl, R., "Fullerene-Like Soot from Euro IV Diesel Engine: Consequences for Catalytic Automotive Pollution Control", Topics in Catalysis, Vol. 30-31, 2004, 241-245 https://doi.org/10.1023/B:TOCA.0000029756.50941.02
  20. Witten, T. A., Sander, L. M., "Diffusion-limited aggregation", Physical Review B, Vol. 27, No. 9, 1983, 5686-5697 https://doi.org/10.1103/PhysRevB.27.5686
  21. Matsoukas, T., Friedlander, S. K., "Dynamics of aerosol agglomerate formation", Journal of Colloid and Interface Science, Vol. 146, No. 2, 1991, 495-506 https://doi.org/10.1016/0021-9797(91)90213-R
  22. Lee K. O., Cole, R., Sekar, R., Choi M. Y., Kang, J. S., Bae, C. S., Shin, H. D., "Morphological investigation of the microstructure, dimensions, and fractal geometry of diesel particulates", Proc. Combust. Inst., Vol. 29, No. 1, 2002, 647-653 https://doi.org/10.1016/S1540-7489(02)80083-9