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The control of an opposed hydraulic free piston engine

Author

Listed:
  • Zhu, Yongsheng
  • Wang, Yang
  • Zhen, Xudong
  • Guan, Shuai
  • Wang, Jiancai
  • Wu, Yining
  • Chen, Yujin
  • Yin, Shujun

Abstract

An opposed hydraulic free piston engine is under design at the Tianjin University in China because of the advantages of this engine compared to the conventional engine. The main challenges presented by such engines are the control of the piston motion and synchronization. This study investigates the fundamental control context and control method of the opposed hydraulic free piston engine using an AMESim simulation model. The responses of the engine to force disturbance and setpoint change are studied using proportional–integral–derivative (PID) controller, simplified energy equation feedforward and grey model-modified energy equation feedforward. Grey model-modified energy equation feedforward, along with PID, is found to provide satisfactory response performances in piston position control. Synchronization is also discussed, and an acceptable synchronization performance is found to be achievable. The results of hardware-in-the-loop testing show that the control strategy works and that the controller is stable.

Suggested Citation

  • Zhu, Yongsheng & Wang, Yang & Zhen, Xudong & Guan, Shuai & Wang, Jiancai & Wu, Yining & Chen, Yujin & Yin, Shujun, 2014. "The control of an opposed hydraulic free piston engine," Applied Energy, Elsevier, vol. 126(C), pages 213-220.
    • Handle: RePEc:eee:appene:v:126:y:2014:i:c:p:213-220
    DOI: 10.1016/j.apenergy.2014.04.007
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    References listed on IDEAS

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    1. Mikalsen, R. & Roskilly, A.P., 2010. "The control of a free-piston engine generator. Part 1: Fundamental analyses," Applied Energy, Elsevier, vol. 87(4), pages 1273-1280, April.
    2. Mikalsen, R. & Jones, E. & Roskilly, A.P., 2010. "Predictive piston motion control in a free-piston internal combustion engine," Applied Energy, Elsevier, vol. 87(5), pages 1722-1728, May.
    3. Zhao, Zhenfeng & Zhang, Fujun & Huang, Ying & Zhao, Changlu & Guo, Feng, 2012. "An experimental study of the hydraulic free piston engine," Applied Energy, Elsevier, vol. 99(C), pages 226-233.
    4. Mikalsen, R. & Roskilly, A.P., 2010. "The control of a free-piston engine generator. Part 2: Engine dynamics and piston motion control," Applied Energy, Elsevier, vol. 87(4), pages 1281-1287, April.
    5. Xu, Shuaiqing & Wang, Yang & Zhu, Tao & Xu, Tao & Tao, Chengjun, 2011. "Numerical analysis of two-stroke free piston engine operating on HCCI combustion," Applied Energy, Elsevier, vol. 88(11), pages 3712-3725.
    Full references (including those not matched with items on IDEAS)

    Citations

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    Cited by:

    1. Xuezhen Wang & Feixue Chen & Renfeng Zhu & Guilin Yang & Chi Zhang, 2018. "A Review of the Design and Control of Free-Piston Linear Generator," Energies, MDPI, vol. 11(8), pages 1-21, August.
    2. Fukang Ma & Shuanlu Zhang & Zhenfeng Zhao & Yifang Wang, 2021. "Research on the Operating Characteristics of Hydraulic Free-Piston Engines: A Systematic Review and Meta-Analysis," Energies, MDPI, vol. 14(12), pages 1-23, June.
    3. Huihua Feng & Yu Song & Zhengxing Zuo & Jiao Shang & Yaodong Wang & Anthony Paul Roskilly, 2015. "Stable Operation and Electricity Generating Characteristics of a Single-Cylinder Free Piston Engine Linear Generator: Simulation and Experiments," Energies, MDPI, vol. 8(2), pages 1-21, January.
    4. E, Jiaqiang & Liu, Guanlin & Zhang, Zhiqing & Han, Dandan & Chen, Jingwei & Wei, Kexiang & Gong, Jinke & Yin, Zibin, 2019. "Effect analysis on cold starting performance enhancement of a diesel engine fueled with biodiesel fuel based on an improved thermodynamic model," Applied Energy, Elsevier, vol. 243(C), pages 321-335.
    5. Zhang, Shuanlu & Zhao, Zhenfeng & Zhao, Changlu & Zhang, Fujun & Wang, Shan, 2017. "Cold starting characteristics analysis of hydraulic free piston engine," Energy, Elsevier, vol. 119(C), pages 879-886.
    6. Zhang, Shuanlu & Zhao, Zhenfeng & Zhao, Changlu & Zhang, Fujun & Wang, Shan, 2016. "Experimental study of hydraulic electronic unit injector in a hydraulic free piston engine," Applied Energy, Elsevier, vol. 179(C), pages 888-898.

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