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Article Navigation> JOURNAL OF BEIJING INSTITUTE OF TECHNOLOGY> 2015> 24(3): 321-327
ZUO Zheng-xing, XU Da-tao, FENG Hui-hua. Experimental study on compression stroke characteristics of free-piston engine generator[J]. JOURNAL OF BEIJING INSTITUTE OF TECHNOLOGY, 2015, 24(3): 321-327. doi: 10.15918/j.jbit1004-0579.201524.0306
Citation: ZUO Zheng-xing, XU Da-tao, FENG Hui-hua. Experimental study on compression stroke characteristics of free-piston engine generator[J].JOURNAL OF BEIJING INSTITUTE OF TECHNOLOGY, 2015, 24(3): 321-327.doi:10.15918/j.jbit1004-0579.201524.0306
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Experimental study on compression stroke characteristics of free-piston engine generator

doi:10.15918/j.jbit1004-0579.201524.0306

  • School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China

  • Received Date:2013-12-27
    Abstract
  • The compression stroke characteristics of free-piston engine generator were studied. The numerical model of the compression stroke was established based on thermodynamics and dynamics equation, and the leak loss, heat loss and friction loss were considered. Through solving numerical equations, the in-cylinder pressure of compression stroke under different compression ratios was calculated, energy transfer and conversion process was analyzed, and the calculated results were experimentally verified. The results showed that the actual effective output of electronic energy and the compression energy stored in the compressed gas accounted for about 70%. The compression energy gradually increased with the increasing compression ratio. When the compression ratio was more than 7.5, the actual compression energy increased slowly and the energy error between simulation and test decreased.
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