배출가스 저감장치에 따른 Euro 5 경유 대형버스의 유해대기오염물질 배출특성

• Published in: 한국분무공학회지 Vol. 23; no. 4; pp. 175 - 184
• Main Authors: 홍희경, Heekyoung Hong, 문선희, Sunhee Mun, 정택호, Taekho Chung, 김선문, Sunmoon Kim, 서석준, Seokjun Seo, 김정화, Jounghwa Kim, 정성운, Sungwoon Jung, 홍유덕, Youdeog Hong
• Format: Journal Article
• Language: Korean
• Published: 한국분무공학회 31.12.2018
• Subjects: Aldehydes; Diesel heavy duty buses; Emission characteristics(배출특성); HAPs; PAHs; VOCs; 경유 대형버스; 다환방향족 탄화수소; 알데히드류; 유해대기오염물질; 휘발성유기화합물
• ISSN: 1226-2277; 2288-9051

Emission characteristics of regulated (NOx, PM, CO, NMHC) and unregulated (VOCs, aldehydes, PAHs) air pollutants were investigated for diesel heavy duty buses equipped with different after-treatment systems (DPF+EGR and SCR) under urban driving cycle. The combustion temperature and the working temperature of SCR catalysts were important to make impact on NOx emissions, whereas PM emissions were low. The alkane groups dominated NMVOCs emissions, making 42.6~59.4% of sum of the NMVOCs emissions. Especially, alkane emissions of DPF+EGR-equipped vehicle included DOC had 14.9~15.5% higher than those of SCR-equipped vehicle due to low efficiency of oxidation catalyst. In the case of individual NMVOCs, n-nonane and propylene emissions highly occupied for DPF+EGR and SCR, respectively. Formaldehyde emissions among aldehydes were the highest and PAHs emissions were hardly detected except naphthalene and phenanthrene. The NMHC speciation has been shown to be the highest of the formaldehyde ranged 20.8~21.5%. The results of this study will be contributed to establish Korean HAPs emission inventory for automobile source.