Transactions of the Korean Society of Automotive Engineers (한국자동차공학회논문집)

The Korean Society of Automotive Engineers (한국자동차공학회)
권호 표지

Effect of DPF Regeneration on the Nano Particle Emission of Diesel Passenger Vehicle

DPF 재생이 경유승용차의 미세입자 배출에 미치는 영향 연구

  • Kwon, Sang-Il (Department of Mechanical Engineering, Hanyang University) ;
  • Park, Yong-Hee (Transportation Pollution Research Center, National Institute of Environmental Research) ;
  • Kim, Jong-Choon (Transportation Pollution Research Center, National Institute of Environmental Research) ;
  • Lee, Chang-Sik (Department of Mechanical Engineering, Hanyang University)
  • 권상일 (한양대학교 기계공학과) ;
  • 박용희 (국립환경과학원 교통환경연구소) ;
  • 김종춘 (국립환경과학원 교통환경연구소) ;
  • 이창식 (한양대학교 기계공학과)
  • Published : 2007.05.01
Download PDF
⟨ Previous Next ⟩

Abstract

Nano-Particles are influenced on the environmental protection and human health. The relationships between transient vehicle operation and nano-particle emissions are not well-known, especially for diesel passenger vehicles with DPF. In this study, a diesel passenger vehicle was measured on condition of DPF regeneration and no regeneration on a chassis dynamometer test bench. The particulate matter (PM) emission from this vehicle was measured by its number, size and mass measurement. The mass of the total PM was evaluated with the standard gravimetric measurement method while the total number and size concentrations were measured on a NEDC driving cycle using Condensation Particle Counter (CPC) and EEPS. Total number concentration by CPC was $1.5{\times}10^{1l}N/km$, which was 20% of result by EEPS. This means about 80% of total particle emission is consist of volatile and small-sized particles(<22nm). During regeneration, particle emission was $6.2{\times}10^{12}N/km$, was emitted 400 times compared with the emission before regeneration. As for the particle size of $22{\sim}100nm$ was emitted mainly, showing peak value of near 40nm in size. This means regeneration decreased the mean size of particles. Regarding regeneration, PM showed no change while the particle number showed about 6 times difference between before and after regeneration. It seems that the regeneration influences on particle number emissions are related to DPF-fill state and filtration efficiency.

Keywords

References

  1. Z. Samaras, 'Overview of the EU DG TREN Particulate Project,' 7th Proc. ETH Zurich Conference on Combustion Generated Nano particles, 2003
  2. A. G. Konstandopoulos, 'The Diesel Exhaust Aftertreatment(DEXA) Cluster of the EU Growth Programme,' 7th Proc. ETH Zurich Conference on Combustion Generated Nanoparticles, 2003
  3. Y. Kumagai, 'Studies on Retrofit of CR-DPF and Diesel Particle Size Measurements,' 5th Proc. ETH Zurich Workshop on Combustion Generated Nanoparticles, JCAP, 2001
  4. J. M. Dunne, 'The GRPE Particulate Measurement Programme: Phase 2 Conclusions and Outlook,' 7th Proc. ETH Zurich Workshop on Combustion Generated Nanoparticles, 2003
  5. Markus KASPER, 'The Number Concentration of Non-Volatile Particles Design Study for an Instrument According to the PMP Recommendation,' SAE 2004-01-0960, 2004
  6. GRPE, 'Conclusion on Improving Particulate Mass Measurement Procedures and New Particle Number Measurement Procedures Relative to the Requirements of The 05 Series of Amendments to Regulation No. 83,' 48th GRPE Agenda Item 2, 2004
  7. M. S. Lim, J. H. Yoo, M. D. Eom, J. W. Hwang and Y. E. Kim, 'Characteristics of Nanoparticles Exhausted from Heavy-duty Diesel Vehicles with Low Emission Technology,' Transactions of KSAE, Vol.20, No.2, pp.225-236, 2004
  8. H. Kim, S. Lee, J. Kim, G. Cho and N. Sung and Y. Jeong, 'Measurement of Size Distribution of Diesel Particles: Effects of Instruments, Dilution Methods, and Measuring Positions,' Int. J. Automotive Technology, Vol.6, No.2, pp.119-124, 2005