Global warming and finite amount of oil resources have become serious issues. For this reason, the development of eco-friendly vehicles, using biofuel or oher materials has attracted significant attention. In particular, bioethanol has been focused on as an alternative to gasoline because it does not require a full-scale remodeling of a conventional internal combustion engine. However, the differences in the physical characteristics between gasoline and ethanol can lead to different spray characteristics, which can significantly affect the level of combustion. This study aims to identify the physical characteristics of an ethanol-gasoline blended fuel, including its viscosity, density and temperature by measuring the Sauter mean diameter (SMD) and applying a spray visualization. Through these experiments, basic data regarding the fuel characteristics and spray patterns according to the ethanol content required for an optimized combustion of an ethanol-gasoline blended fuel, are provided.

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直喷系统中乙醇汽油混合燃料喷雾特性的实验研究

全球变暖和有限的石油资源已经成为严重的问题。因此，使用生物燃料或其他材料开发的环保型汽车引起了广泛的关注。特别地，生物乙醇已被关注作为汽油的替代物，因为它不需要常规内燃机的全面改造。但是，汽油和乙醇之间的物理特性差异会导致不同的喷雾特性，从而严重影响燃烧程度。这项研究旨在通过测量Sauter平均直径（SMD）并使用喷雾可视化技术来确定乙醇汽油混合燃料的物理特性，包括其粘度，密度和温度。通过这些实验，