http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
백병훈 ( Byunghoon Baek ),김웅일 ( Woongil Kim ),김영근 ( Youngkun Kim ),민병혁 ( Byounghyouk Min ),이기형 ( Kihyung Lee ) 한국액체미립화학회 2018 한국액체미립화학회 학술강연회 논문집 Vol.2018 No.-
At the time the need to use alternative fuels that can reduce harmful emissions is increasing, ethanol has a simple chemical structure compared to gasoline and diesel, so that it is possible to reduce harmful emissions, and the oxygen atoms contained in ethanol have a merit of performing a good function for combustion. In the overseas market, the production of FFVs (Flexible Fuel Vehicle) using ethanol-gasoline blended fuel is increasing, and it is possible to use ethanol-gasoline blended ratio differently depending on the driving tendency. Since there is a disadvantage that the combustion characteristics vary depending on the blended ratio, it is necessary to evaluate the spray of the blends in order to optimize the combustion of the target engine. In GDI (Gasoline Direct injection) systems that inject directly into an engine cylinder, fuel must be injected at high pressure to be atomized for efficient combustion. As the fuel is injected at a high pressure, the amount of fuel vaporized due to the promotion of fuel atomization increases, and since the area of the vaporized fuel also affects the engine combustion, it is necessary to observe the spray characteristics of the liquid and vapor regions of the injected fuel. The BOS (Background Oriented Schlieren) is the method using the difference in density by the fuel injected into the measurement area through the pattern image of the background and has advantage of measuring it with the existing spray visualization experiment equipment. In this study, the vaporization characteristics of ethanol-gasoline blended fuels were observed by the spray visualization experiment using the BOS technique, and the rate of vaporization was increased as the ambient temperature increased.