Journal of Korean Society for Atmospheric Environment (한국대기환경학회지)

Korean Society for Atmospheric Environment (한국대기환경학회)
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Characteristics of Exhaust Emissions Reduction by Oxidation Catalyst for Light-duty Diesel Engine

산화촉매에 의한 소형디젤엔진의 배출가스 저감특성

  • 김선문 (국립환경연구원 자동차공해연구소) ;
  • 임철수 (국립환경연구원 자동차공해연구소) ;
  • 엄명도 (국립환경연구원 자동차공해연구소) ;
  • 정일래 (서울산업대 환경공학과)
  • Published : 2002.10.01
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Abstract

The purpose of this study is to evaluate the emission reduction characteristics depending on the formation of the catalyst which influences the development of the diesel oxidation catalyst (DOC) suitable for small-sized diesel engines. We also attempted to suggest the feasibility of it as an after-treatment device. The reduction efficiency of DOC for CO and HC was proportional to the contents of precious metals, and the particulate matter (PM) has been reduced as much as 53∼59%. The reduction rate of soluble organic fraction (SOF) by DOC attachment revealed 100%. The composition of sulfate in PM increased from 3%, 7∼11% by installation of DOC. It is described that increase of sulfate contributed to the production of PM. This result also showed that the SOF and sulfate have trade-off relationship.

Keywords

References

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