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Study of the Injection Control Strategies of a Compression Ignition Free Piston Engine Linear Generator in a One-Stroke Starting Process

Author

Listed:
  • Huihua Feng

    (School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China)

  • Yuyao Guo

    (School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China)

  • Yu Song

    (School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China)

  • Chendong Guo

    (School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China)

  • Zhengxing Zuo

    (School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China)

Abstract

For a compression ignition (CI) free piston engine linear generator (FPLG), injection timing is one of the most important parameters that affect its performance, especially for the one-stroke starting operation mode. In this paper, two injection control strategies are proposed using piston position and velocity signals. It was found experimentally that the injection timing’s influence on the compression ratio, the peak in-cylinder gas pressure and the indicated work (IW) is different from that of traditional reciprocating CI engines. The maximum IW of the ignition starting cylinder, say left cylinder (LC) and the right cylinder (RC) are 132.7 J and 138.1 J, respectively. The thermal-dynamic model for simulating the working processes of the FPLG are built and verified by experimental results. The numerical simulation results show that the running instability and imbalance between LC and RC are the obvious characters when adopting the injection strategy of the velocity feedback. These could be solved by setting different triggering velocity thresholds for the two cylinders. The IW output from the FPLG under this strategy is higher than that of adopting the position feedback strategy, and the maximum IW of the RC could reach 162.3 J. Under this strategy, the prototype is able to achieve better starting conditions and could operate continuously for dozens of cycles.

Suggested Citation

  • Huihua Feng & Yuyao Guo & Yu Song & Chendong Guo & Zhengxing Zuo, 2016. "Study of the Injection Control Strategies of a Compression Ignition Free Piston Engine Linear Generator in a One-Stroke Starting Process," Energies, MDPI, vol. 9(6), pages 1-19, June.
    • Handle: RePEc:gam:jeners:v:9:y:2016:i:6:p:453-:d:71924
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    References listed on IDEAS

    as
    1. Jia, Boru & Tian, Guohong & Feng, Huihua & Zuo, Zhengxing & Roskilly, A.P., 2015. "An experimental investigation into the starting process of free-piston engine generator," Applied Energy, Elsevier, vol. 157(C), pages 798-804.
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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. Peng Sun & Chi Zhang & Jinhua Chen & Fei Zhao & Youyong Liao & Guilin Yang & Chinyin Chen, 2016. "Decoupling Design and Verification of a Free-Piston Linear Generator," Energies, MDPI, vol. 9(12), pages 1-23, December.
    3. Yuan, Chenheng & Peng, Shizhuo & Zhou, Lifu, 2023. "Multi-field coupling effect of injection on dynamics and thermodynamics of a linear combustion engine generator with slow compression and fast expansion," Energy, Elsevier, vol. 270(C).
    4. Chi Zhang & Feixue Chen & Long Li & Zhaoping Xu & Liang Liu & Guilin Yang & Hongyuan Lian & Yingzhong Tian, 2018. "A Free-Piston Linear Generator Control Strategy for Improving Output Power," Energies, MDPI, vol. 11(1), pages 1-21, January.

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