Performance Evaluation of an Electrohydrodynamic Spray Nozzle for Regeneration of Particulate Matter on Diesel Particulate Filter

경유차 입자상물질 저감필터(DPF) 재생용 전기수력학적 연료 후분사 노즐의 미립화 특성 평가 및 수치해석을 이용한 액적 입경별 연소 특성 평가

  • Published : 2012.06.30


Particulate matters (PM) which are collected into a diesel particulate filter (DPF) system have to be periodically removed by thermal oxidation. In this report, we fabricated an electrohydrodynamic-assisted pressure-swirl nozzle to spray diesel droplets finer. Atomization performance of the nozzle was evaluated using both experimental and numerical methods. Two types of nozzle designs, the charge induction type and the charge injection type, were tested. While the former generated diesel droplets of $400\;{\mu}m$ at an applied electric potential over 10 kV, the latter presented the droplets smaller than $23\;{\mu}m$ at an applied electric potential of 8 kV. The numerical simulation results showed that the reduced size of droplets caused higher evaporation of droplets and therefore the increased temperature, which would eventually increase the regeneration performance of the DPF system.


  1. Cloupeau, M., and Prunet-Foch, B., (1989). Electrostatic spraying of liquids in cone-jet mode, Journal of Electrostatics, 22,135-159.
  2. Cloupeau, M., and Prunet-Foch, B. (1994). Electrohydrodynamic spraying function modes: critical review, Journal of Aerosol Science, 25, 1021-1036.
  3. Darcy, P., Da Costa, P., Mellottee, H., Trichard, J.-M., and Djega-Mariadassou, G. (2007). Kinetics of catalyzed and non-catalyzed oxidation of soot from a diesel engine, Catalysis Today, 119, 252-256.
  4. Datta, A., and Som, S. K. (1999). Effects of spray characteristics on combustion performance of a liquid fuel spray in a gas turbine combustor, International Journal of Energy Research, 23, 217-228.<217::AID-ER473>3.0.CO;2-U
  5. Fernandez de la Mora, J., and Loscertales, I. G. (1994). The current emitted by highly conducting Taylor cones, Journal of Fluid Mechanics, 260, 155-184.
  6. Gomez, A., Bingham, D., de Juan, L., and Tang, K. (1997). Production of protein nanoparticles by electrospray drying, Journal of Aerosol Science, 29, 561-574.
  7. Green, D. W. and Perry, R. H. (2008). Perry's chemical engineers' handbook, 8thed., McGrawhill.
  8. Hayati, I., Bailey, A., and Tadros, Th.F. (1987). Investigation into the mechanism of electrodrodynamic spraying of liquids, Journal of Colloidand Interface Science, 117,205-221.
  9. Jaworek, A. (2007). Micro- and nanoparticle production by electrospraying, Powder Technology, 176, 18-35.
  10. Kelly, A. J. (1990). Charge injection electrostatic atomizer modeling, Aerosol Science and Technology, 12, 526-637.
  11. Kim, C., Kim, M.Y., Cho, G.B., Kim, H., Jeong, Y., Kang, J., and Lee, J.H. (2011). A study on the development of active burner for off-road vehicle, KSAE 2011 Spring Conference, 467-473.
  12. Kim, D.J., and Lee, J.K. (2008). Analysis of the transient atomization characteristics of diesel spray using time-resolved PDPA data, International Journal of Automotive Technology, 9, 297-305.
  13. Kim, H., and Chun, K.M. (2005). PM oxidation characteristics of DPF thermal regeneration as a function of the air flow rate and PM loading mass, proc. KSME 2005 Fall Annual Meeting, 3107-3112.
  14. Konstandopoulos, A.G., Kostoglou, M., Skaperdas, E., Papaioannou, E., Zarvalis, D., and Kladopoulou, E. (2000). Fundamental studies of diesel particulate filters: Transient loading, regeneration and aging, Society of Automobile Engineers Technical Paper, 2000-01-1016.
  15. Kwon, T., Jeon, S., Rah, S., Kim, D., Oh, G., Lee, C., and Lee, C. (2009). Development of a diesel injection system for the active regeneration DPF, proc. KSAE 2009 Spring Conference, 322-327.
  16. Laryea, G.N., and No, S.Y. (2004). Spray angle and breakup length of charge-injected electrostatic pressure-swirl nozzle, Journal of Electrostatics, 60, 37-47.
  17. Lee, S.B., Lee, T.W., and Ha, J.Y. (1996). A study on the local instantaneous flame temperature, soot formation and oxidation in a diesel engine, KSAE 1996 Fal lConference, 388-394.
  18. Lehr, W., and Hiller, W. (1993). Electrostatic atomization of liquid hydrocarbons, Journal of Electrostatics, 30,433-440.
  19. Lohmann, M., Beyer, H., and Schmidt-Ott, A. (1997). Size and charge distribution of liquid metal electrospray generated particles, Journal of Aerosol Science, 28,S349-350.
  20. Miao, P., Balachandran, W., and Xiao, P. (1999). Formation of ceramic thin films using electrospray in cone-jet mode, IEEE Transactionson Industrial Applications, 4,2487-2496.
  21. Naqwi, A.A. (1994). Innovative phase Doppler systems and their applications, Particle and Particle Systems Characterization, 11,7-21.
  22. Oh, K.C., Lee, C., and Cho, T. (2008). Uncontrolled regeneration characteristics of SiC DPFs using DPF test rig, Transaction of KSAE, 16, 80-86.
  23. Rossle-Llompart, J., and Fernandez de la Mora, J. (1994). Generation of monodisperse droplets 0.3 to $4\;{\mu}m$ in diameter from electrified cone-jets of highly conducting and viscous liquids, Journal of Aerosol Science, 25, 1093-1119.
  24. Rulison, A.J., and Flagan, R.C. (1994). Electrospray Atomization of electrolytic solutions, Journal of Colloid and Interface Science, 167, 135-145.
  25. Sazhina, E. M., Sazhin, S.S., Heikal, M.R., and Bardsley, M.E.A. (2000). The P-1 model for thermal radiation transfer: application to numerical modelling of combustion processes in diesel engines, 16th International Association for Mathematics and Computersin Simulation World Congress.
  26. Shim, S. H., Jeong, S. H., and Hong, W. S. (2005). Basic study on the flame stability of burner for regeneration of diesel particulate filter in engine exhaust gas, Journal of the Korean society of combustion, 10(4), 10-17.
  27. Shim, S. H., and Jeong, S. H., (2010). Complied application of burner and oxidation catalyst for diesel particulate filter regeneration, Journal of the Korean society of combustion, 15(3), 25-31.
  28. Smallwood, I. (1996). Hand book of organic solvent properties, John Wiley & Son sInc., 23-24.
  29. Smith, D.P.H. (1986). The electrohydrodynamic atomization of liquid, IEEE Transactionson Industrial Applications, IA-22, 527-535.
  30. Turns, S.R. (2006). An introduction to combustion:concepts and applications, 2nd Ed., McGraw-Hill, 95-105.
  31. Westbrook, C.K., and Dryer, F.L. (1981). Simplified reaction mechanisms for the oxidation of hydrocarbon fuels in flames, Combustion Science and Technology, 27, 31-43.
  32. Yule, A.J., Shrimpton, J.S., Watkins, A.P., Balachandran, W., and Hu, D. (1995). Electrostatically atomized hydrocarbon sprays, Fuel, 74, 1094-1103.
  33. Zahmatkesh, I., and Moghiman, M. (2006). Effect of liquid fuel droplet size on soot emission from turbulent spray flames, Iranian Journal of Science&Technology, Transaction B, Engineering, 30, 339-351.