디젤 극미세입자 개수 농도 측정시 Volatile Particle 생성을 억제할 수 있는 희석방법에 관한 실험적 연구
- Authors
- 임태호; 조형문; 이진욱; 정용일; 전흥신; 김홍석
- Issue Date
- 2009
- Publisher
- 한국자동차공학회
- Keywords
- Diesel emissions(디젤 배출 가스); Nanoparticle(극미세입자); Particle number concentration(입자 개수농도); Volatile particle generation(휘발성 입자 생성); Dilution temperature(희석 온도); Dilution ratio(희석 비); Diesel emissions(디젤 배출 가스); Nanoparticle(극미세입자); Particle number concentration(입자 개수농도); Volatile particle generation(휘발성 입자 생성); Dilution temperature(희석 온도); Dilution ratio(희석 비)
- Citation
- 한국자동차공학회 논문집, v.17, no.5, pp.67 - 73
- Journal Title
- 한국자동차공학회 논문집
- Volume
- 17
- Number
- 5
- Start Page
- 67
- End Page
- 73
- URI
- http://scholarworks.bwise.kr/ssu/handle/2018.sw.ssu/16107
- ISSN
- 1225-6382
- Abstract
- Recently, Europe decided to start the regulation of diesel engine nanoparticles because of its well known adverse health effects. The diesel nanoparticles can be classified as solid carbon particles and volatile particles. The volatile particles generates during dilution process by condensation of gas phase volatile compounds such as hydrocarbon. The new nanoparticle regulation considers only solid particles because of difficulty of measurement of volatile particles. The aim of this study is to suggest a proper dilution method that prevent the volatile particle
generation. As a result, it is found that the 1st dilution air temperature should be above 120ºC in order to prevent volatile particle generation effectively. It is also found that the volatile particles can be removed effectively in the evaporation tube by the increase of evaporation tube temperature. But when exhaust gas is hot enough (>190ºC, in this study) and it is diluted in the first diluter with high temperature air (>120ºC), removal phenomenon of volatile particles by increasing of evaporation tube temperature can not be seen. It means that there are no volatile particles in the diluted exhaust gas.
Additionally, dilution ratio is not an important factor for volatile particle generation compared with dilution air temperature or evaporation tube temperature.
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