환경위생공학 (Journal of environmental and Sanitary engineering)

대한환경위생공학회 (Korean Society for Environmental Sanitary Engineers)
권호 표지

디젤 입자상물질의 크기분포 특성에 관한 실험적 연구

Experimental Study on the Size Distribution of Diesel Particulate Matter (DPM)

  • 연익준 (동림건설기술(주)기술개발연구소) ;
  • 권순박 (광주과학기술원 환경공학과) ;
  • 이규원 (광주과학기술원 환경공학과)
  • 발행 : 2002.06.01
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초록

Diesel particulate matter (DPM) is known to be one of the major harmful emissions produced by diesel engines. The majority of diesel particles are in the range of smaller than $I{\mu}\textrm{m}$. Because of their tiny volume, ultrafine diesel particles contribute very little to the total mass concentration which is currently regulated for automobile emissions. Diesel particles are known to have deleterious effects upon human health because they penetrate human respiratory tract and have negative effects on the health. The measurement of the number distribution of nanometer size particles (nanoparticles) in the diesel exhaust emission is important in order to evaluate their environmental and health impact, and to develop new types of diesel particulate filters. In this study, we directly sampled particulate matters emitted from a diesel truck mounted on the chassis dynamometer by a flow separator and dilution system, and measured the nanoparticles using two types of differential mobility analyzers combined with a Faraday cup electrometer (FCE) and a condensation particle counter (CPC). The particle size distributions were analyzed by changing engine operation condition, i.e. ratio of engine loading. The total number concentration of particles were increased with the engine loading ratio and the nanoparticles (less than 50nm) were affected by hydrocarbon (HC) concentration in the diesel exhaust.

키워드

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