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대형 경유트럭의 NO<sub>x</sub> 저감장치에 따른 배출가스 특성비교
문선희,유흥민,손지환,윤창완,박규태,김정수,이종태,Mun, SunHee,Yoo, Heung-Min,Son, JiHwan,Yun, Changwan,Park, Gyu Tae,Kim, JeongSoo,Lee, Jongtae 한국액체미립화학회 2015 한국액체미립화학회지 Vol.20 No.3
With increasing of GDP, the registration number of passenger cars has exceeded 20 million last year in Korea. Especially, the registration number of the diesel engine vehicles has been increasing. However, the WHO(World Health Organization) IARC (International Agency for Research on Cancer) has reported that diesel engine exhaust gas is an one of HAPs, which has carcinogenic for human, and they have designated it to Group 1. To solve this problem, exhaust gas from diesel engines has to be controlled. Thus, it has been controlling by European regulatory standard in Korea. On the other hand, in order to meet the enhanced emission regulations, all manufacturing company applied $NO_x$ control device to vehicles such as EGR (Exhaust Gas Recirculation), SCR (Selective Catalytic Reduction) and so on. However, these devices (EGR, SCR) were operated by difference reaction mechanism respectively, and the composition of exhaust gas would be differenced from that of them. In this study, it was conducted to evaluate variety characteristics on changing of exhaust gas composition by each $NO_x$ control device, and the heavy duty diesel trucks were chosen as experimental vehicles. From the result, it revealed that vehicles (with EGR) were discharged higher THC as 52.5% than that of others (with SCR). However, it did not followed that trend, in the case of CO; it was discharged as 57.2% lower than that of others (with SCR). In the future, these data would be used to apply to efficient $NO_x$ control device for meeting to EURO 6.
배기량과 차량중량에 따른 LPG 연료를 사용하는 승용 및 승합형 자동차온실가스 배출 특성에 관한 연구
김형준,이종태,임윤성,윤창완,길지훈,홍유덕 한국수소및신에너지학회 2018 한국수소 및 신에너지학회논문집 Vol.29 No.5
In Korea, passenger car and van using LPG fuel including taxi constantly increased due to the high cost of fuel. Recently, the emission standard has continuously tightened in the world. In this investigation was conducted the greenhouse gas emission characteristics of LPG vehicles according to the displacement and weight. Exhaust emission characteristics of 13 test LPG vehicles from about 1.0 L to 3.0 L displacements were measured and analyzed by using chassis dynamometer and emission analyzer. It is revealed that the greenhouse gas emission was showed the increasing tendency as the displacement and curb weight increased. Also, greenhouse gas emission of SC03 driving cycle has highest value and that of HWFET driving cycle shows the lowest value.
EURO III에 의한 이륜자동차의 미량유해물질 배출특성평가
유흥민,손지환,박규태,문선희,윤창완,김정수,이종태 한국분무공학회 2015 한국액체미립화학회지 Vol.20 No.4
Recently, the researches for air pollutant control technologies have been performing in Korea, while considering an one of the latest main topics as problems on air pollutant control. However, it is difficult to investigate emission amount of air pol- lutant by passenger cars, because of lack of the domestic information about mobile source; the number of research institutes are less in the whole. Especially, the informations on registered numbers and emissions of motorcycles are less. Thus, in this study, the analysis that is based on experimental results was conducted for finding out source profiling and emission char- acteristics on motorcycles exhaust. For these experiments, the domestic motorcycles were chosen and evaluated by EURO III standard. From the result, controlled pollutants (CO, HC, NOx) were met to EURO III, but low displacement motorcycles showed a higher incomplete combustion reaction than that of 250 cc motorcycles. Additionally, uncontrolled pollutants (BTEX and 1,3-butadiene) were decreased with increasing a displacement of motorcycles. However, the emission trend of aldehydes was not followed that of those; the formaldehyde ratio increased upto approximately 33%, with increasing a dis- placement of motorcycles. In the future, it would be used to support the CAPSS as basic data of Korea.
경유자동차의 인증시험 모드 외 질소산화물 배출 특성에 관한 연구
이종태 ( Jong-tae Lee ),박준홍 ( Junhong Park ),윤창완 ( Chang-wan Yun ),강건우 ( Gunwoo Kang ),이상현 ( Jeong-soo Kim ),김정수 한국액체미립화학회 2016 한국액체미립화학회 학술강연회 논문집 Vol.2016 No.-
Emission regulations for diesel vehicles have been dramatically strengthened to reduce air pollutions of urban area. Korea has introduced European strict regulations to light-duty diesel vehicles which Euro6 emission limit was enforced from 2014. Recent studies of on-road NOx emissions have shown that considerable NOx discrepancies exist in driving certification test cycle and on-road. It is regarded as a reason of ineffectiveness of strict vehicle emission regulations on reducing air pollutants such as NO<sub>2</sub>. In this study 20 Euro6 vehicles have been tested in various driving conditions on chassis dynamometer beside conventional certification driving cycle, NEDC. The results have shown very large range of NOx emission values as tested vehicles and engine calibration rather than emission reduction technologies impacted on increased NOx emissions. When vehicles were driven in high ambient temperature with operating air conditioner and in low ambient temperature, reduced EGR function caused excessive NOx emissions. A vehicle emitted high NOx emission in slightly different driving conditions caused by shut-off EGR and was considered to use defeat device.
대형 경유트럭의 NOx 저감장치에 따른 배출가스 특성비교
문선희 ( Sunhee Mun ),유흥민 ( Heung Min Yoo ),손지환 ( Jihwan Son ),윤창완 ( Changwan Yun ),박규태 ( Gyu Tae Park ),김정수 ( Jeong Soo Kim ),이종태 ( Jongtae Lee ) 한국액체미립화학회 2015 한국액체미립화학회지 Vol.20 No.3
With increasing of GDP, the registration number of passenger cars has exceeded 20 million last year in Korea. Especially, the registration number of the diesel engine vehicles has been increasing. However, the WHO (World Health Organization) IARC (International Agency for Research on Cancer) has reported that diesel engine exhaust gas is an one of HAPs, which has carcinogenic for human, and they have designated it to Group 1. To solve this problem, exhaust gas from diesel engines has to be controlled. Thus, it has been controlling by European regulatory standard in Korea. On the other hand, in order to meet the enhanced emission regulations, all manufacturing company applied NOx control device to vehicles such as EGR (Exhaust Gas Recirculation), SCR (Selective Catalytic Reduction) and so on. However, these devices (EGR, SCR) were operated by difference reaction mechanism respectively, and the composition of exhaust gas would be differenced from that of them. In this study, it was conducted to evaluate variety characteristics on changing of exhaust gas composition by each NOx control device, and the heavy duty diesel trucks were chosen as experimental vehicles. From the result, it revealed that vehicles (with EGR) were discharged higher THC as 52.5% than that of others (with SCR). However, it did not followed that trend, in the case of CO; it was discharged as 57.2% lower than that of others (with SCR). In the future, these data would be used to apply to efficient NOx control device for meeting to EURO 6.
휘발유 승용자동차의 엔진 배기량이 실도로 주행시 이산화탄소 및 질소산화물 배출에 미치는 영향
이종태 ( Jongtae Lee ),김형준 ( Hyung Jun Kim ),임윤성 ( Yun Sung Lim ),윤창완 ( Chang Wan Yun ),길지훈 ( Ji Hoon Keel ),홍유덕 ( You Deug Hong ) 한국액체미립화학회 2018 한국액체미립화학회지 Vol.23 No.3
Recently, registrated passenger cars have increased and were close about seventy million at the end 2017 year in Korea. Among the passenger car using gasoline fuel make up forty six percentage of total registrated vehicles. In this study, investigation on real driving emission characteristics in the passenger car using gasoline fuel with various engine displacements were carried out. The real driving emission characteristics were measured and analyzed by using PEMS (Portable Emission Measurement System). PEMS was composed of gas analyzer, emission flow meter and sample conditioning system et al. Also, test six vehicles were selected to the gasoline passenger car with engine displacement from 1.6L to 3.7L. Two test routes with engine start of cold and hot conditions were applied to analyze the emission characteristics of RDE, respectively. The results show that the CO<sub>2</sub> emission have a increasing trend as the engine displacement and vehicle weight. Also, it is guessed that the CO<sub>2</sub> emission and vehicle weight were more correlated than the engine displacements. On the other hand, NOx emissions of RDE have not increasing or decreasing tendency according engine displacements or vehicle weight because the activation of three-way catalyst in the gasoline vehicles.
이중 분사 적용에 따른 단기통 디젤엔진의 연소특성에 관한 연구
이종태(Jong-Tae Lee),신달호(Dalho Shin),김형준(Hyung Jun Kim),윤창완(Chang-Wan Yun),김정수(Jeong-Soo Kim),박수한(Suhan Park) 한국연소학회 2017 한국연소학회지 Vol.22 No.1
This paper presents an experimental study on the effect of double injection strategies on combustion characteristics in a single-cylinder diesel engine. These studies are applied to the double injection strategies, such as 2<SUP>nd</SUP> injection timing variations with fixed injection interval (8 degree) and variations of injection pressures with fixed injection timing and intervals. The injection quantity was 7 + 7 ㎎ for double injections, and 14 ㎎ for single injection. When the injection pressure was increased, the ignition delay was shortened, and the ISFC (indicated specific fuel consumption) was increased due to the fast termination of combustion by the shortened energizing duration. In addition, the retardation of injection timings toward TDC (top dead center) caused the reduction of ignition delay and the decrease of ISFC with the decrease of FMEP (friction mean effective pressure).