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斯特林发动机喷雾特性试验研究

, PP. 10-16

Keywords: 压力涡流喷嘴,斯特林发动机,喷雾特性

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Abstract:

采用高速摄影技术研究比较了不同背压下斯特林发动机的喷雾过程,并分析了燃油流量、燃烧室背压以及喷嘴参数对斯特林发动机喷雾特性的影响。结果表明,燃烧室背压对喷雾过程具有明显的影响;随着流量的增大,贯穿距离和喷雾锥角都增大,但流量达到一定程度后,喷雾锥角的增加趋势减缓;随着燃烧室背压加大,喷雾的贯穿距离增大,喷雾锥角减小,背压对喷雾具有压缩作用,当背压增大到一定程度后,它对喷雾锥角的影响程度降低;相同流量工况下,随喷嘴流道通径的减小,喷雾的贯穿距离增大,喷雾锥角减小。

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