喷雾锥角和喷雾均匀度是燃油喷嘴的两个重要指标。
Atomization Angle and uniformity are two key parameters of fuel spray nozzle.
伞形喷雾径向贯穿距离远小于多孔喷雾，喷雾锥角在喷雾早期急剧减小。
However, the radial penetration distance of umbrella spray was much shorter than that of multi hole spray and the umbrella spray Angle decreased rapidly in the early stage of spray development.
背压对贯穿距离、喷雾锥角、喷雾轴心速度和浓度衰减率的影响均大于启喷压力。
It shows that the effects of back pressure on penetration, spray cone Angle, and decline rate of centerline velocity and concentration of the spray are greater than that of fuel injection pressure.
在燃烧室壁面附近，柴油的喷雾锥角迅速增大，而DME喷雾锥角几乎没有明显的变化。
Near the chamber wall and impingement spray, the spray angle of the diesel fuel spray increased very fast, but that of the DME spray almost had no significant change.
喷雾锥角对发动机蒸发和燃烧过程有显著的影响，存在一个最佳的喷雾锥角使上述过程达到最优。
It is found that there are optimum swirl ratio and spray Angle for better evaporation and combustion.
提出了基于模糊C均值聚类和图像匹配，检测喷雾锥角和喷雾不均匀度的方法，并应用于发动机喷嘴性能检测。
A method based on fuzzy C-mean clustering and image matching algorithms are proposed to detect atomization Angle and uniformity, applied to performance test-bed of engine nozzle.
结果表明对于比较明亮且无阴影的图片仅应用灰度范围就能够保证喷雾锥角的测量误差在5%以内，贯穿距离的测量误差在1%以内；
The results show that bright images used in gray scope can assure the measuring error scope within 5% of spray cone angle and the measuring error scope within 1% of penetration distance.
结果表明对于比较明亮且无阴影的图片仅应用灰度范围就能够保证喷雾锥角的测量误差在5%以内，贯穿距离的测量误差在1%以内；
The results show that bright images used in gray scope can assure the measuring error scope within 5% of spray cone angle and the measuring error scope within 1% of penetration distance.
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