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홍희경,문선희,서석준,김정화,정성운,정택호,홍유덕,성기재,김선문,Hong, Heekyoung,Mun, Sunhee,Seo, Seokjun,Kim, Jounghwa,Jung, Sungwoon,Chung, Taekho,Hong, Youdeog,Sung, Kijae,Kim, Sunmoon 한국액체미립화학회 2018 한국액체미립화학회지 Vol.23 No.2
Emission characteristics of regulated pollutants (CO, NOx, HC and PM) and hazardous air pollutants (HAPs) from diesel heavy duty trucks equipped with EGR+pDPF and SCR for Euro 5 emission standards were investigated using a chassis dynamometer. In the case of regulated pollutants, diesel heavy duty trucks with EGR+pDPF emitted 79% less CO than those with SCR. Also, those with the SCR emitted 36% less NOx than those with the EGR+pDPF. The results of VOCs have show that alkanes emissions for heavy duty trucks with the EGR+pDPF and the SCR have been higher than alkenes, cycloalkanes and aromatics. In the case of individual VOCs, the highest of propene emissions for 11.3~16.1% occupied. For aromatics group, benzene emissions are the highest percentage for 4.4~15.5%. In the future, the results of present study will provide basic data to set up HAPs emissions inventory for mobile source.
포스터 전시회 : 연료첨가제 주입 전,후 승용차의 규제물질 배출현황
정성운 ( Sungwoon Jung ),손지환 ( Jihwan Son ),홍희경 ( Heekyoung Hong ),성기재 ( Kijae Sung ),김정수 ( Jeongsoo Kim ),김정화 ( Jounghwa Kim ) 한국액체미립화학회 2015 한국액체미립화학회 학술강연회 논문집 Vol.2015 No.-
This study was designed to investigate characterization of regulated pollutants (CO, HC, NOx and PM) emitted from 134 diesel and gasoline passenger cars based on emission standards according to fuel additives. The experiments using chassis dynamometer were conducted under NEDC and CVS-75 modes. Comparison for fuel additive management and test between Korea, USA, EU and Japan, Korea was more strict than others. For with/without fuel additives according to diesel emission standards, NOx of EURO 4 and EURO 5 showed a relatively similar tendency. In the case of PM reduction rate, EURO 5 was over 20% decreased than EURO 4. In the case of standard deviation/average ratio for gasoline vehicles, variation interval was big for LEV 23.3 ~ 58% and ULEV 31.6 ~ 56.4%. Following the imposition of stricter regulations (EURO 5 and ULEV), difference rate for standard deviation was big. Especially, in the case of diesel vehicles, difference rate for NOx 68% and PM 48% was the biggest. The results of present study will contribute to set up emission standards for Korean fuel additives.
포스터 전시회 : 규제기준에 따른 경유 중형트럭의 미량유해물질 배출특성 연구
홍희경 ( Heekyoung Hong ),정성운 ( Sungwoon Jung ),손지환 ( Jihwan Son ),이상은 ( Sangeun Lee ),문선희 ( Sunhee Moon ),성기재 ( Kijae Sung ),김정수 ( Jeongsoo Kim ),김정화 ( Jounghwa Kim ) 한국액체미립화학회 2015 한국액체미립화학회 학술강연회 논문집 Vol.2015 No.-
As pollutants have been diversified with the acceleration and enhancement of industrial development, an interest in the criteria air contaminants including nitrogen dioxide, sulfur dioxide and dust emitted from heating and industrial facilities, and vehicles has recently been expanded to hazardous air pollutants (HAPs). Although only trace amount of HAPs are released in vehicle exhaust emissions, they have toxic, carcinogenic, bio-accumulative, persisting and diffusing characteristics, and the direct and long-term exposure to them may lead to adverse effects in humans, animals and plants. Particularly, diesel vehicles emit more pollutants if they are lager and become battered. While the number of registered medium-duty trucks is relatively low compared to the overall registered vehicles, their ratio has been steadily increasing. This study was designed to investigate the emission characteristics of unregulated pollutants (Aldehyde and VOCs) as well as regulated pollutants (CO, HC, NOx and PM) from diesel medium-duty trucks. The emission characteristics of unregulated and regulated pollutants were assessed based on regulation standards (EURO 4 and EURO 5) and intake weight (2.5 ton and 5 ton). The results show that unregulated and regulated pollutants remained almost unchanged at higher speeds but decreased at below 23.5 km/h. Reduction in unregulated and regulated pollutants was noticeable in vehicles of recent regulation standards and light intake weight. The analysis of aldehyde using UPLC showed that formaldehyde and acetaldehyde of aldehyde were most dominant. The GC/MS analysis showed that benzene, toluene, ethylbenzene and xylene of VOCs were over 80% followed by toluene, xylene, ethylbenzene and benzene. The results of present study will be contributed to set up HAPs inventory.