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Research on the Pressure Ratio Characteristics of a Swash Plate-Rotating Hydraulic Transformer

Author

Listed:
  • Chongbo Jing

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

  • Junjie Zhou

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

  • Shihua Yuan

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

  • Siyuan Zhao

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

Abstract

This paper presents a theoretical model and its experimental validation for the pressure ratio of a swash plate-rotating hydraulic transformer. The structure and principle of the new type of transformer are described. The swash plate-rotating type can reduce the throttling loss caused by the valve plate in traditional hydraulic transformers. The theoretical model of the pressure ratio was derived based on the displacements functioning as the pump and motor in the transformer, accounting for the friction losses. A specific experimental setup including the prototype was established to validate the principle and pressure ratio of the machine. The results show that the transformer has a wider pressure range. The increase in pressure at port A and the rotating speed of the cylinder can reduce the pressure ratio slightly due to the torque loss. The present work indicates the useful potential of the swash plate-rotating hydraulic transformer.

Suggested Citation

  • Chongbo Jing & Junjie Zhou & Shihua Yuan & Siyuan Zhao, 2018. "Research on the Pressure Ratio Characteristics of a Swash Plate-Rotating Hydraulic Transformer," Energies, MDPI, vol. 11(6), pages 1-11, June.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:6:p:1612-:d:153501
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    References listed on IDEAS

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    1. Gaspar, José F. & Calvário, Miguel & Kamarlouei, Mojtaba & Guedes Soares, C., 2016. "Power take-off concept for wave energy converters based on oil-hydraulic transformer units," Renewable Energy, Elsevier, vol. 86(C), pages 1232-1246.
    2. Andrea Vacca, 2018. "Energy Efficiency and Controllability of Fluid Power Systems," Energies, MDPI, vol. 11(5), pages 1-6, May.
    3. Milos Vukovic & Roland Leifeld & Hubertus Murrenhoff, 2017. "Reducing Fuel Consumption in Hydraulic Excavators—A Comprehensive Analysis," Energies, MDPI, vol. 10(5), pages 1-25, May.
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    Cited by:

    1. Zhou, Junjie & Jing, Chongbo & Wu, Wei, 2020. "Energy efficiency modeling and validation of a novel swash plate-rotating type hydraulic transformer," Energy, Elsevier, vol. 193(C).
    2. Bao, Qianqian & Zhou, Junjie & Jing, Chongbo & Zhao, Huipeng & Wu, Yi & Zhang, Zhu, 2022. "Nonlinear dynamic model for the free rotor of the swash plate-rotating hydraulic transformer," Energy, Elsevier, vol. 261(PB).

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