http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
[디젤엔진부문] 경유자동차의 입자상물질 입경별 배출특성
정일록(Il-rock Chung),엄명도(Myoung-do Eom),김종춘(Jong-choon Kim),김태승(Tae-seung Lim),류정호(Jung-ho Yoo),이규원(Jyoo-won Lee) 한국자동차공학회 1999 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1999 No.11_1
The proportion of diesel vehicle is very high in this country. PM and NOx emitted from diesel-powered vehicle is severely affecting to the air quality. Especially, diesel particulate matters(DPM) including black smoke are hazardous air pollutants to human health and envirornment In order to reduce the exhaust emission from diesel engines, it is necessary to prepare a comprehensive management plan for emissions from diesel vehicles. The emission characteristics according to particle size as well as aftertreatment equipments were analyzed in corporation with K-nST. The number of particles from heavy-duty engines was about #107108/cm3 and particle size was in the range of 100-200 om. In the case of light-duty engines,<br/> number of particles was about #106/cm3 and particle size was in the range of 70-200nm. The removal efficiency of fine particles for aftertreatment equipments under development was also measured. The efficiency was more than 80% for DPF type, but less than 40% for other types and sometimes the efficiency was found to be almost zero.
임철수,류정호,엄명도,황진우,김예은 한국대기환경학회 2004 한국대기환경학회지 Vol.20 No.2
Diesel engines which emit a lot of PM and NOx have been known as a main air polluter. Especially, diesel particulate matters (DPM) including black smoke are hazardous air pollutants to human health and environment. The nations retaining advanced engine technologies have reinforced emission regulations. To meet these regulations diesel engine manufacturers have developed low-emission diesel engines, aftertreatment equipments, alternative fuel technologies and so on. In this study, particle number concentrations characteristics according to particle size and engine driving conditions were analyzed when these low-emission technologies were applied. There was a tendency of increasing particle number concentrations from heavy-duty diesel engines with increasing engine rpm and load rate. In the cases of CDPF (Catalytic Diesel Particulate Filter), CNG (Compressed Natural Gas) engine and ULSD (Ultra Low Sulfur Diesel) more than 99% of particle number concentration were removed.