点火系统
燃烧
材料科学
喷气燃料
可燃性
油滴
圆柱
喷射(流体)
机械
化学
航空航天工程
复合材料
化学工程
机械工程
物理
工程类
有机化学
乳状液
作者
Malki Maliha,Bastian Stumpf,Felix Beyer,Marius Kühnert,Heiko Kubach,Ilia V. Roisman,Jeanette Hussong,Thomas Koch
标识
DOI:10.1177/14680874221095235
摘要
Since the technology of direct injected engines has become more and more prevalent, combustion anomalies such as pre-ignition events have been occurring with increasing frequency. The interaction between the fuel-spray and the oil wetted cylinder liner is considered to be a partial cause for these phenomena. The incoming fuel jet can lead to a detachment of secondary droplets, which may affect pre-ignition events due to their changed flammability properties. To characterize these secondary droplets, spatially and temporally highly resolved optical investigations on the fuel-oil-film-interaction are carried out in this work. Using laser induced fluorescence and two high-speed cameras both fluids are optically separated. Thereby the secondary droplets can be detected and characterized in size, velocity vector, and composition.
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