Transactions of the Korean Society of Automotive Engineers (한국자동차공학회논문집)

The Korean Society of Automotive Engineers (한국자동차공학회)
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Experimental Study on Estimation of Oxidation Rate of PM inside of Diesel Particulate Filter

DPF내 포집된 입자상 물질의 산화율 산출을 위한 실험적 연구

  • Shim, Beomjoo (Department of Mechanical Engineering, Graduate School, Kyunghee University) ;
  • Park, Kyoungsuk (Department of Mechanical Engineering, Kyunghee University) ;
  • Jo, Kyuhee (Department of Mechanical Engineering, Graduate School, Kyunghee University) ;
  • Lee, Hyeongjun (Department of Mechanical Engineering, Graduate School, Kyunghee University) ;
  • Min, Byeongdu (R&D Center, Ssangyong Motor Company)
  • 심범주 (경희대학교 대학원 기계공학과) ;
  • 박경석 (경희대학교 기계공학과) ;
  • 조규희 (경희대학교 대학원 기계공학과) ;
  • 이형준 (경희대학교 대학원 기계공학과) ;
  • 민병두 (쌍용자동차 기술연구소)
  • Received : 2012.04.25
  • Accepted : 2012.08.21
  • Published : 2013.03.01
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Abstract

Conventional method to estimate mass of particulate matter accumulated in diesel particulate filter is to use pressure difference between upstream and downstream of the filter. Then measured pressure difference should be compared that of clean condition which is no particulate matter accumulated in DPF. During regeneration soot oxidation is also estimated by same method. This methodology, however, has demerit on accuracy because of pressure difference deviation of clean DPFs and pressure difference caused by non-carbon based PM which is different from that of caused by carbon based PM. This study suggests new methodology to estimate accumulated soot oxidation rate through exhaust gas characteristics during regeneration. Results, more high accuracy of soot oxidation was obtained by analysis of relationship between fuel mass and concentration of carbon dioxide and oxygen.

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References

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