Volume 34 Issue 12
Dec.  2019
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Article Navigation >  Journal of Aerospace Power  > 2019  >  34(12): 2635-2641
HU Chunming, ZHAO Yingbo, LIU Na. Effect of ignition on detonation combustion of kerosene engine based on time-frequency analysis[J]. Journal of Aerospace Power, 2019, 34(12): 2635-2641. doi: 10.13224/j.cnki.jasp.2019.12.012
Citation: HU Chunming, ZHAO Yingbo, LIU Na. Effect of ignition on detonation combustion of kerosene engine based on time-frequency analysis[J]. Journal of Aerospace Power, 2019, 34(12): 2635-2641. doi: 10.13224/j.cnki.jasp.2019.12.012
shu

Effect of ignition on detonation combustion of kerosene engine based on time-frequency analysis

doi: 10.13224/j.cnki.jasp.2019.12.012
  • 1.

    Internal Combustion Engine Research Institute,Tianjin University,Tianjin 300072,China

  • 2.

    School of Mechanical Engineering,Tianjin University,Tianjin 300072,China

  • Received Date: 2019-06-28
  • Publish Date: 2019-12-28
    Abstract
  • Based on the instantaneous heat release rate, the time-frequency analysis of knock combustion was carried out on a self-developed piston-type aviation kerosene engine. The influence of the dual-spark ignition strategy on knock combustion was investigated. The result showed that the excessive heat release rate of the engine in 8.2-14.8 kHz frequency band led to knock combustion. Delaying synchronous phase ignition advance angle reduced the heat release rate in the major frequency band and inhibited knock. With the increase of the asynchronous ignition phase difference of the dual-spark ignition, the knock factor (KF) and the heat release rate in the major frequency band decreased gradually. Increasing ignition energy led to a slight increase in the knock tendency, but it can improve the power performance of the engine to some extent.

     

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