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燃油喷嘴封严弹簧失效与发动机冒烟的关系

许勇刚 王强

许勇刚, 王强. 燃油喷嘴封严弹簧失效与发动机冒烟的关系[J]. 航空动力学报, 2012, 27(10): 2194-2199.
引用本文: 许勇刚, 王强. 燃油喷嘴封严弹簧失效与发动机冒烟的关系[J]. 航空动力学报, 2012, 27(10): 2194-2199.
XU Yong-gang, WANG Qiang. Relationship of failure of fuel nozzle seal spring and engine smoking failure[J]. Journal of Aerospace Power, 2012, 27(10): 2194-2199.
Citation: XU Yong-gang, WANG Qiang. Relationship of failure of fuel nozzle seal spring and engine smoking failure[J]. Journal of Aerospace Power, 2012, 27(10): 2194-2199.

燃油喷嘴封严弹簧失效与发动机冒烟的关系

Relationship of failure of fuel nozzle seal spring and engine smoking failure

  • 摘要: 通过流量试验对比分析、燃油喷嘴结构分析以及弹簧失效机理分析对某发动机长期存在的冒烟故障的根本原因进行了探索性研究.对冒烟发动机和无冒烟发动机燃油喷嘴及总管流量试验的实证分析表明:发动机冒烟故障的根本原因在于外场服役期间慢车工况某些燃油喷嘴反压降低导致的总管流量不均.对冒烟发动机14个燃油喷嘴的结构实证分析表明:发动机服役中燃油喷嘴及燃油总管流量特性发生漂移的根本原因在于封严弹簧顶紧机制的丧失,而造成顶紧机制丧失的根本原因是弹簧端过度不平导致螺母旋合过程中弹簧在不平端受力不均以致不规则歪倒塑性变形.

     

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出版历程
  • 收稿日期:  2012-05-18
  • 刊出日期:  2012-10-28

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