earticle

영어

In this study, to determine the emission level of HAPs from diesel vehicle without DPF, chassis dynamometer was used in exhaust gas test. As for the test vehicles, 5-ton medium-duty trucks and 4 light-duty vehicles were selected and operated on 9 different driving mode from overseas and domestic (NIER 03/06/09/12/14, WHVC, JE 05, FRP 72, NEDC). As a result of HAPs test at each driving mode for medium-duty vehicle, HAPs emission factor was higher when vehicle's speed was slower. And it founds to be highly related to vehicle's speed with driving mode characteristics. HAPs emission characteristics were higher at lower constant speed and 4 different light-duty vehicles at constant speed were in order of 30 km/h > 60 km/h > 90 km/h. As a result of evaluating the emission factors of 4 types of light-duty vehicles and a medium-duty truck, the carcinogen benzene was 2.0125 ± 1.5530 mg/km in medium-duty vehicle and 0.7171 ± 0.4656 mg/ km in light-duty vehicle. Formaldehyde was 0.5437 ± 0.5850 mg/km in medium-duty vehicle and 0.2577 ± 0.2909 mg/ km in light-duty vehicle. Benzo[a]pyrene was 0.0139 ± 0.0109 μg/km in medium-duty vehicle and 0.0152 ± 0.0194 μg/ km level in light-duty vehicle. In case of heavy metal, is not carciogenic however, Mg and Zn were most common in emission. Through this study, evaluated fundamental characteristics of vehicle exhaust gas by analyzing non-regulated pollutants 'HAPs' other than regulated pollutants.

한국어

본 연구에서는 차대동력계를 이용하여 DPF가 미 장착된 디젤 차량의 배기가스 시험 중 HAPs 배출 수준을 파악하였 다. 시험 차량으로 5톤 중형트럭와 소형차 4종을 선택하였고, 국내·외 9개 주행모드(NIER 03/06/09/12/14, WHVC, JE O5, FTP 72, NEDC)에서 시험하였다. 중형차의 주행모드별 HAPs 시험결과, 차속이 느릴수록 HAPs 배출계수가 높게 평 가되어 주행모드 특성 중 차속과 연관성이 높은 것으로 나타났다. 소형차 4종의 정속주행에 따른 HAPs 배출특성은 30 km/h > 60 km/h > 90 km/h의 순으로 저속주행 일수록 높게 나타났다. 중형차와 소형차 4종의 배출계수 평가결과, 발암성 물질인 benzene은 중형차에서 2.0125 ± 1.5530 mg/km, 소형차는 0.7171 ± 0.4656 mg/km이며, formaldehyde는 중형차에 서 0.5437 ± 0.5850 mg/km, 소형차는 0.2577 ± 0.2909 mg/km으로 평가되었다. benzo[a]pyrene은 중형차에서 0.0139 ± 0.0109 μg/km, 소형차는 0.0152 ± 0.0194 μg/km 수준으로 평가되었다. 중금속의 경우 발암성은 아니나 Mg과 Zn이 가장 배출량이 많은 것으로 나타났다. 본 연구를 통하여 자동차 배기가스 규제물질 외의 미규제 물질인 HAPs의 기본적인 배 출특성을 파악하였다.