Transactions of the Korean Society of Automotive Engineers (한국자동차공학회논문집)

The Korean Society of Automotive Engineers (한국자동차공학회)
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Rigorous Modeling of Single Channel DPF Filtration and Sensitivity Analysis of Important Model Parameters

단일 채널 DPF의 PM 포집 모델링 및 모델 파라미터의 민감도 해석

  • Jung, Seung-Chai (Graduate School, Department of Mechanical Engineering, Yonsei University) ;
  • Park, Jong-Sun (Graduate School, Department of Mechanical Engineering, Yonsei University) ;
  • Yoon, Woong-Sup (Department of Mechanical Engineering, Yonsei University)
  • 정승채 (연세대학교 대학원 기계공학과) ;
  • 박종선 (연세대학교 대학원 기계공학과) ;
  • 윤웅섭 (연세대학교 기계공학과)
  • Published : 2006.11.01
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Abstract

Prediction of diesel particulate filtration is typically made by virtue of modeling of particulate matter(PM) collection. The model is closed with filtration parameters reflecting all small scale phenomena associated with PM trapping, and these parameters are to be traced back by inversely analyzing large-scale empirical data-the pressure drop histories. Included are soot cake permeability, soot cake density, soot density in the porous filter wall, and percolation constant. In the present study, a series of single channel DPF experiment is conducted, pressure histories are inversely analyzed, and the essential filtration parameters are deducted by DPF filtration model formulated with non-linear description of soot cake regression. Sensitivity analyses of model parameters are also made. Results showed that filtration transients are significantly altered by the extent of percolation constant, and the soot density in the porous filter wall is controlling the filtration qualities in deep-bed filtration regime. In addition, effect of soot particle size on filtration quality is distinct in a period of soot cake regime.

Keywords

References

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