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권석주(Seokjoo Kwon),엄준식(Junsik Um),강은정(Eunjeong Kang),서영호(Youngho Seo) 한국자동차공학회 2015 한국자동차공학회 학술대회 및 전시회 Vol.2015 No.11
In this study, analysis the influence through fuel economy test of gasoline vehicle for each of the various test conditions. (e.g. battery state, cooling fan, laboratory temperature, soaking time) It showed a difference fuel economy results at least about 3 % or more between low (88 %) and high (99 %) battery SOC (State of charge) conditions because alternator saving function gives a positive effects on fuel economy. Fuel economy performance test of laboratory temperature changes were slight fall at 21℃ temperature condition and increase at 29℃ temperature condition. Meanwhile, the fuel economy results of the cooling fan changes were almost negligible level.
디젤 엔진에서 디젤-가솔린 Dual fuel이 연소 및 배기 특성에 미치는 영향
권석주(Seokjoo Kwon),차준표(Junepyo Cha),이창식(Chang Sik Lee),박성욱(Sungwook Park) 한국연소학회 2010 KOSCOSYMPOSIUM논문집 Vol.- No.41
The purpose of this paper is to investigate the combustion and emission characteristics in compression ignition engines using diesel-gasoline dual fuel. For investigating combustion characteristics, diesel fuel was injected directly in a single-cylinder compression ignition engine with a common-rail injection system and gasoline fuel was injected into premixed chamber installed in intake port. In order to investigate exhaust emission characteristics, exhaust gas was measured by emission analyzer and smoke meter. The experimental results showed that the case of diesel-gasoline dual fuel combustion had longer ignition delay and lower combustion pressure compared to those of directly injected diesel fuel case. Furthermore, premixed gasoline-air mixture reduced NOx emissions due to low peak of rate of heat release (ROHR).
압축착화 엔진에서 디젤-가솔린 Dual Fuel이 연소 및 배기 특성에 미치는 영향
권석주(Seokjoo Kwon),차준표(Junepyo Cha),성기안(Kian Sung),박성욱(Sungwook Park) 한국연소학회 2011 한국연소학회지 Vol.16 No.1
The present study describes the characteristics of combustion and exhaust emissions in compression ignition engines using diesel-gasoline dual fuel. For investigating combustion characteristics, diesel fuel was injected directly in a single-cylinder compression ignition engine with a common-rail injection system and gasoline fuel was injected into a premixed chamber installed in an intake port. In order to investigate exhaust emission characteristics, exhaust gas was measured by emission analyzer and smoke meter. The experimental results showed that cases of diesel-gasoline dual fuel combustion exhibited extended ignition delay and reduced peak combustion pressure compared to those of directly injected diesel fuel cases. Furthermore, premixed gasoline-air mixture reduced NOx emissions due to low peak of rate of heat release (ROHR).
흡기 가열을 이용한 가솔린 압축착화 엔진의 연소 및 배기 배출물 특성
권석주(Seokjoo Kwon),차준표(Junepyo Cha),강민구(Mingu Kang),이창식(Chang Sik Lee),박성욱(Sungwook Park) 한국자동차공학회 2011 한국자동차공학회 학술대회 및 전시회 Vol.2011 No.11
The purpose of this paper is to investigate combustion and exhaust emission characteristics in gasoline compression ignition engine. Using gasoline fuel means merit in high volatility and low cetane number. This characteristics easily promote air-fuel mixing ratio in comparison with diesel fuel. Reaching gasoline auto-ignition region set a intake preheating system and it applies heat to cylinder. High temperature of intake air and high pressure injected of gasoline fuel were combined and then release heat and work. Experiments were performed at single cylinder compression ignition engine at 17.8:1 compression ratio and 1200rpm engine speed. Pressure sensor with glow plug type was acquired pressure data of each cycle and to obtain exhaust emission characteristics used soot measurement device and exhaust emission analyser. Results of combustion characteristics is showed that high pressure ratio by gasoline fuel multiple auto ignition. Exhaust emission characteristics become low NOx and high HC in decrease of temperature. It understood that low intake temperature interrupts auto ignition of gasoline fuel so that combustion could be done.
중대형 차량 에너지소비효율 측정과 개별 모드주행에 따른 실차 연비영향에 관한 연구
권석주(Seokjoo Kwon),차준표(Junepyo Cha),서동명(Dong Myung Seo),강우(Woo Kang),서영호(Youngho Seo),박성욱(Sungwook Park) 한국자동차공학회 2013 한국자동차공학회 부문종합 학술대회 Vol.2013 No.5
The purpose of this study is to know the impact of difference driving mode on medium-heavy duty vehicle. Two driving modes (JE05 and WHVC) are tested to understand the difference of energy consumption efficiency and exhaust emissions. Experiment was used the HYUNDAI e-AERO TOWN performed at chassis dynamometer and exhaust emission analysis system for medium-heavy duty vehicles. JE05 mode energy consumption efficiency was reduced about 6% than WHVC mode. Such a conclusion has been shown by difference of average speed and driving mileage.
실차 연비·배출가스 측정을 통한 CNG 차량의 에너지소비효율 계산 절차분석 연구
권석주(Seokjoo Kwon),최용준(Yongjun Choi),강은정(Eunjeong Kang),조승완(Seungwan Cho),서영호(Youngho Seo),박성욱(Sungwook Park) 한국자동차공학회 2013 한국자동차공학회 학술대회 및 전시회 Vol.2013 No.11
The purpose of this study is to analysis of how to calculate fuel efficiency in major development countries (U.S. and Europe) and energy consumption formular derivation of domestic CNG fuel and prove by vehicle test. The formula of fuel consumption is different in mpg(mile per gallon), l/100km, and km/l each countries. CNG fuel has a significant impact on fuel density, composition, temperature, and Hydro-Carbon ratio.