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Motion characteristic of a free piston linear engine

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  • Xiao, Jin
  • Li, Qingfeng
  • Huang, Zhen

Abstract

A mathematical model of a free piston linear engine is established. The motion characteristics as well as the natural frequency map of the free piston are established. Then, its motion characteristics are successfully explained from the oscillation point. The full simulation model is built up in Matlab/Simulink for a better understanding of its motion features. The results show that the free piston system is a forced vibration system with variable damping coefficient and stiffness. Its steady-state response of periodical excitation is convergent which means that the system is stable under the periodical combustion. Furthermore, it has some unique features which are different from those of traditional Internal Combustion (IC) engines.

Suggested Citation

  • Xiao, Jin & Li, Qingfeng & Huang, Zhen, 2010. "Motion characteristic of a free piston linear engine," Applied Energy, Elsevier, vol. 87(4), pages 1288-1294, April.
    • Handle: RePEc:eee:appene:v:87:y:2010:i:4:p:1288-1294
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    References listed on IDEAS

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    1. Mikalsen, R. & Roskilly, A.P., 2009. "Coupled dynamic-multidimensional modelling of free-piston engine combustion," Applied Energy, Elsevier, vol. 86(1), pages 89-95, January.
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