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Visualization of Fuel Wall Wetting, Oil Dilution by Fuel,and Oil Transport Mechanisms in an Optically Accessible Engine by LIF Imaging

机译:通过LIF成像可视化燃料壁润湿,燃料稀释的油稀释机制,以及光学可接近的发动机中的排油机制

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Fuel impingement on the cylinder wall causes problems in both lubrication and combustion due to interaction of liquid fuel and engine oil. To analyze this issue with temporal and spatial resolution, a laser-induced fluorescence(LIF)system for simultaneous kHz-rate imaging of fuel and oil films on the cylinder wall is presented. Experiments were performed in a research engine with optical access along the entire stroke of the cylinder in fired and motored engine operation. Besides fuel wall wetting, fuel transport across the piston ring pack and the impact on the lubricant conditions in the piston group can be seen in the images.
机译:由于液体燃料和发动机油的相互作用,气缸壁上的燃料冲击导致润滑和燃烧中的问题。为了用时间和空间分辨率分析该问题,提出了一种激光诱导的荧光(LiF)系统,用于燃料壁上的燃料和油膜的同时κ速率成像。在具有燃烧和电动发动机操作中的圆柱体的整个行程中的研究发动机中进行了实验。除了燃料壁润湿之外,可以在图像中看到穿过活塞环包装的燃料输送和对活塞组中的润滑剂条件的影响。

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