Journal of Hydrogen and New Energy (한국수소및신에너지학회논문집)

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
권호 표지

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.)
  • Published : 2006.06.15
Download PDF
⟨ Previous Next ⟩

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

References

  1. Norman H. Beachley and Frank J. Fronczak, 'Design of a Free-Piston Engine-Pump', SAE paper 921740, 1992
  2. Peter A. J. Achten, 'A Review of Free Piston Engine Concepts', SAE paper 941776, 1994
  3. P. V. Blarigan, N. Pradiso and S. Goldborough, 'Homogeneous Charge Compression Ignition with Free Piston: A New Approach to Ideal 000 Cycle Performance', SAE paper 980204, 1998
  4. K. C. Noh, K. M Kim, S. W. Park and J. T. Lee, 'An Investigation on Backfire Phenomenon of Free-Piston Hydrogen-Fueled Engine', Proceedings of the KHNES Annual Autumn Meeting 2005, Vol. 1, 2005, pp. 161-166
  5. Y. Y. Kim, T. H. Ryu, and J. T. Lee, 'Backfire Occurrence by Abnormal Electric Discharge in Hydrogen Fueled Engine', Trans of the KHES, Vol. 13, No. 1, 2002, pp. 65-73
  6. K. M. Kim, J. H. Lee, and J. T. Lee, 'A Basic Study on the Combustion Characteristics of Linear Hydrogen Power System', Proceedings of the KHNES Annual Spring Meeting 2005, Vol. 1, 2005, pp. 88-94