A Study on the Combustion Stabilization and Performance Improvement in the Free-piston Hydrogen Fueled Engine

프리피스톤 수소기관의 연소안정화 및 성능향상에 관한 연구

  • Noh, K.C. (School of Mechanical Engineering, Sungkyunkwan Univ.) ;
  • Yoon, J.S. (Graduate School of Sungkyunkwan Univ.) ;
  • Kim, K.M. (Graduate School of Sungkyunkwan Univ.) ;
  • Park, S.W. (Graduate School of Sungkyunkwan Univ.) ;
  • Lee, J.T. (School of Mechanical Engineering, Sungkyunkwan Univ.)
  • 노기철 (성균관대학교 기계공학부) ;
  • 윤재성 (성균관대학교 대학원) ;
  • 김강문 (성균관대학교 대학원) ;
  • 박상욱 (성균관대학교 대학원) ;
  • 이종태 (성균관대학교 기계공학부)
  • Published : 2006.06.15

Abstract

A free-piston hydrogen fueled engine is considered as one of the next power systems which is able to obtain high efficiency and low emission, simultaneously. In this study, in order to ensure the possibility as the next generation power system, the combustion characteristics and the performance of the free-piston hydrogen fueled engine are analyzed by using the linear RICEM for the change of injection pressure and equivalence ratio. As the results, in-cylinder maximum pressure is shown at injection pressure $P_{inj}$=6bar. Backfire phenomenon is not observed under experimental condition and knock occurs over ${\Phi}=0.8$. The thermal efficiency is the highest at injection pressure, $P_{inj}$=6bar and equivalence ratio, ${\Phi}=0.7$, respectively.

Keywords

Free-piston hydrogen fueled engine;Linear RICEM;Backfire;Knocking;Piston crevice volume

References

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