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촉매제 요소함량에 따른 Urea-SCR의 배출가스 현황 조사
임윤성(Yunsung Lim),이종태(Jongtae Lee),김선문(Sunmoon Kim),박장민(Jangmin Park),문선희(Sunhee Moon),김동민(Dongmin Kim),김형준(Hyungjun Kim),김정수(Jeongsoo Kim) 한국자동차공학회 2012 한국자동차공학회 부문종합 학술대회 Vol.2012 No.5
Ministry of Environment prescribes urea water by Clean Air Conservation Act. Urea water manufaturer used urea(high purity) and distilled water. Urea contents must be 31.8 ~ 33.2% (m / m) by Clean Air Conservation Act. But urea water manufacturer should be prepared with a urea content exceeded or under. so this research is evalustion of exhaust emission according the concentration urea rate and urea water usage.
임윤성(Yunsung Lim),박준홍(Joonhong Park),강대일(Daiil Kang),김지영(Jiyoung Kim),박영표(Youngpyo Park),서충열(ChoongYeol Seo),이종태(Jongtae Lee),김정수(Jeongsoo Kim) 한국자동차공학회 2011 한국자동차공학회 부문종합 학술대회 Vol.2011 No.5
Hydrocarbons which are the main sources of VOCs from motor vehicles are emitted not only from the exhaust but also from evaporation of the fuel in storage and supplying systems. The important parameters to affect evaporative emissions are air and fuel temperature and fuel vapor pressure. Diurnal loss rises exponentially as air temperature and vapor pressure increase. The effects of vapor pressure on running loss are different as the capacity of canister. Tests with simulating real temperature and driving conditions show that hydrocarbons in evaporative emissions are more than that in exhaust gas in summer season because of the higher air temperature. The BTEX analysis of VOCs shows that toluene is the most emitter and benzene is the next and that photochemical ozone creation potential gets lower as vapor pressure decrease.
국내 판매되는 소형자동차의 온실가스 배출 경향 조사 연구
임윤성 ( Yunsung Lim ),이종태 ( Jongtae Lee ),김형준 ( Hyungjun Kim ),길지훈 ( Jihoon Keel ),강건우 ( Seungtaek Oh ),이상현 ( Sanghyun Lee ),오승택 ( Gunwoo Kang ),박철구 ( Chulgoo Park ),김지은 ( Jieun Kim ),홍유덕 ( Youdeog Hong 한국액체미립화학회 2018 한국액체미립화학회 학술강연회 논문집 Vol.2018 No.-
Light Duty Vehicles (LDVs) CO<sub>2</sub> emission or Fuel Efficiency (FE) have been regulated as Corporate Average Sales Emissions since 2009 in Korea. Car manufacturer selected CO<sub>2</sub> or FE every year and submit the sales volume and CO<sub>2</sub> results by model of the year to Ministry of environment until March next year. Fourteen of the nineteen car manufacturers have been passed the CO<sub>2</sub> levels of the year in 2017. However, all manufacturer are not penalized in 2017. Because, they have already met the limit of CO<sub>2</sub> three years ago. That results have been valid for three years. So they have enough CO<sub>2</sub> surplus of results. But almost car manufacturer will be expected to hardly pass CO<sub>2</sub> target level in 2020. That time CO<sub>2</sub> target is 97g/km. So manufacturer needs a strategy to achieve the target.
이륜자동차에서 발생되는 PM2.5 및 유해대기오염물질의 배출가스 영향 평가
임윤성(Yunsung Lim),이종태(Jongtae Lee),강대일(Daiil Kang),임철수(Cheolsoo Lim),고종민(Jongmin Koh),임태홍(Taehong Lim) 한국자동차공학회 2010 한국자동차공학회 학술대회 및 전시회 Vol.2010 No.11
Because increased food delivery service and quick delivery service using motorcycle, registration number of motorcycle was sharply increased and it could contribute on worsening air quality. This study two models(50㏄, 125㏄) of motorcycle were tested by three engine oil types. Two motorcycles were tested with CVS-40 mode for air pollutants such as CO, THC, NOx, Elemental Carbon(EC), Organic Carbon(OC), sulfate, soot and SOF(soluble organic fraction)
노후 운행경유차의 NOx 배출특성분석 및 조기폐차대책을 통한 삭감 방안 검토
길지훈,임윤성,김형준,노현구,윤보섭,이상은,이태우,김정수,최광호,Keel, Jihoon,Lim, Yunsung,Kim, Hyungjun,Roh, Hyungu,Yun, Boseop,Lee, Sangeun,Lee, Taewoo,Kim, Jeongsoo,Choi, Kwangho 한국액체미립화학회 2017 한국액체미립화학회지 Vol.22 No.3
Currently, the proportion of diesel vehicles in all automobile has grown significantly over the past few years. Air pollutant also grew up and became a social problem. In particular, the issue of NOx emissions caused by NOx high emission in real driving has become a global issue. Despite the fact that the regulatory and reduction project of the new vehicle is actively carried out, there are no existence regulations of In-use diesel vehicle's NOx emission. Therefore, the emission characteristics of the in-use diesel vehicles were investigated to seek ways to reduce NOx emissions in this study. The test targets were used in 237 close inspection of exhaust gases and model year varied from 1996 to 2011. However, the classification of emissions by emission standards differed considerably from NOx emissions. This means that the selection method for early retirement targets should be converted from model year to amount of emissions. If the current early retirement program was applied to the existing system, pre-Euro 3 was 22.530 g/km and Euro 4 was 21.810 g/km to NOx reduction. However, when the vehicle was changed to high emission target vehicle, NOx reduction increase maximum 84.705 kg/yr. According to the study results, an effective reduction in NOx emissions can be achieved if an earlier target in expanded to Euro 4 vehicles.