Volume 30 Issue 10
Oct.  2015
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Article Navigation >  Journal of Aerospace Power  > 2015  >  30(10): 2368-2375
HU Chun-ming, GU Jun, ZHOU Hao. Combustion characteristics for direct injection piston aviation engine[J]. Journal of Aerospace Power, 2015, 30(10): 2368-2375. doi: 10.13224/j.cnki.jasp.2015.10.010
Citation: HU Chun-ming, GU Jun, ZHOU Hao. Combustion characteristics for direct injection piston aviation engine[J]. Journal of Aerospace Power, 2015, 30(10): 2368-2375. doi: 10.13224/j.cnki.jasp.2015.10.010
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Combustion characteristics for direct injection piston aviation engine

doi: 10.13224/j.cnki.jasp.2015.10.010

  • 1. Internal Combustion Engine Research Institute, Tianjin University, Tianjin 300072;

  • 2. Stake Key Laboratory of Engines, Tianjin University, Tianjin 300072, China

  • Received Date: 2014-04-09
  • Publish Date: 2015-10-28
    Abstract
  • Based on the structure characteristics of the ROTAX914 carburetor piston aviation engine, a single-cylinder low pressure air-assisted direct injection aviation testing engine was developed. The influences of different controlling parameters, including injection timing, injection duration, injection pressure, ignition advance angles, on the combustion characteristics of the engine were investigated. The results show that: the engine combustion efficiency gets higher and the combustion cyclic variations get lower at the optimal start injection. With the increase of engine speed and load, the optimal start of injection is advanced accordingly. With the decrease of the direct injection duration and the injection pressure, the peak cylinder pressure and the rate of pressure rise are reduced, the rapid combustion period is extended and the combustion cyclic variations get higher. With the advancing of the ignition time, the peak cylinder pressure and the rate of pressure rise are increased, the combustion phase gets earlier and the combustion cyclic variations are reduced.

     

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