http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
허상훈(Sanghun Hur),이광주(Kwangju Lee),김용락(Yongrak Kim),이종태(Jongtai Lee),김진희(Jinhee Kim) 한국자동차공학회 2010 한국자동차공학회 부문종합 학술대회 Vol.2010 No.5
To understand the development concept of the CNG engine for agricultural and industrial use, the differences of performance between CNG engine converted from agricultural diesel engine and base engine were evaluated by using research CNG engine. Modified parts of the light-duty diesel engine for the small agricultural tractor were used in the development of the research single cylinder CNG engine. It was found that CNG engine converted had 10% lower mean effective pressure and 6 times higher NOx than those of the based agricultural diesel engine. Low temperature combustion for CNG may be considered as one of the strategy to obtain both high power as same as diesel engine and ultra low level NOx emission of the next generation.
흡기관 분사식 수소기관에서 고부하시 NOx 감소 가능성에 관한 연구
이광주(Kwangju Lee),허상훈(Sanghun Hur),이종태(Jongtai Lee) 한국자동차공학회 2009 한국자동차공학회 학술대회 및 전시회 Vol.2009 No.11
In order to grasp the possibility of achieving low NOx and high performance without backfire in a hydrogen-fueled engine using external mixture injection at high load, the effects of increasing the boosting pressure were analyzed in terms of combustion characteristics, and performance enhancement. As the results, it was found that the achievement of low emission(NOx of less than 20 ppm), high power(equal to that of a gasoline engine) and high efficiency(around 36.7%) without backfire in a hydrogen-fueled engine is possible around a boosting pressure of 1.5 bar at an equivalence ratio of Φ=0.35.
이광주(Kwangju Lee),허상훈(Sanghun Hur),김용락(Yongrak Kim),이종태(Jongtai Lee) 한국자동차공학회 2010 한국자동차공학회 학술대회 및 전시회 Vol.2010 No.11
In order to grasp the possibility of simultaneously achieving ultra low NOx, high power and high efficiency without backfire in a hydrogen-fueled engine using external mixture injection at high load, the effects of low temperature combustion were analyzed by NOx emission, in-cylinder gas temperature and performance. As the results, it was found that ultra low NOx(almost 0 ppm), high power(above a gasoline engine) and high efficiency(around 37.3%) in a hydrogen-fueled engine is possible around a boosting pressure of 1.7 bar at an equivalence ratio of Φ=0.33.
이광주(Kwangju Lee),허상훈(Sanghun Hur),김용락(Yongrak Kim),이종태(Jongtai Lee) 한국자동차공학회 2010 한국자동차공학회 부문종합 학술대회 Vol.2010 No.5
In order to grasp the possibility of simultaneously achieving ultra low NOx, high power and high efficiency without backfire in a hydrogen-fueled engine using external mixture injection at high load, as early step the effects of low temperature combustion were analyzed in terms of backfire occurrence, knock and performance enhancement. As the results, it was found that the achievement of backfire control by retarding IVO, high power(above a gasoline engine) and high efficiency(around 37.5%) in a hydrogen-fueled engine is possible around a boosting pressure of 1.7 bar at an equivalence ratio of Φ=0.4.
이광주(Kwangju Lee),김용락(Yongrak Kim),허상훈(Sanghun Hur),이종태(Jongtai Lee) 한국자동차공학회 2011 한국자동차공학회 부문종합 학술대회 Vol.2011 No.5
In order to develop a compression ignition H₂ engine operated under neat hydrogen-air pre-mixture and room temperature conditions, as the first step, the variable compression ratio hydrogen research engine that has higher compression ratio more than 40 was developed in this study. Feasibility of the compression ignition by using high compression ratio, also, was grasped. As the results, it was shown that neat hydrogen-air of ultra lean mixture(equivalence ratio equal to 0.22) is spontaneously ignited at compression ratio 26 which is lower than estimated one without any assist method for promoting self-ignition but has narrow operating regions for equivalence ratio.
농공용기관의 CNG화를 하기 위한 연소실형상의 적정화 연구
이종구(Jonggoo Lee),이광주(Kwangju Lee),김용락(Yongrak Kim),이종태(Jongtai Lee),허상훈(Sanghun Hur),장양(Yang Jang) 한국자동차공학회 2011 한국자동차공학회 학술대회 및 전시회 Vol.2011 No.11
In order to suggest suitable combustion chamber of the CNG engine for an agricultural and industrial use, 5 type of combustion chamber was found performance for combustion chamber to respond high-load and fuel efficiency. The combustion chamber of 5 type was found COV-imep less than 5%. In the case of thermal efficiency Open dish type was better than flat type. NOx was low emission at flat type by minimum flow in cylinder and HC was least emission at open dish Ⅰtype. The CNG engine for an agricultural and industrial was suggested the open dish Ⅱ type among the 5 type of combustion chamber in terms of high-load and suggested the open dish Ⅳ type in terms of fuel efficiency.