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Nonlinear dynamic model for the free rotor of the swash plate-rotating hydraulic transformer

Author

Listed:
  • Bao, Qianqian
  • Zhou, Junjie
  • Jing, Chongbo
  • Zhao, Huipeng
  • Wu, Yi
  • Zhang, Zhu

Abstract

Hydraulic transformer (HT) is an energy conservation component used in the common pressure rail system and achieves an excellent energy-saving effect in construction machinery and vehicle transmission. This paper reports a complete nonlinear dynamic model and validation for the free rotor in a swash plate-rotating hydraulic transformer (SPRHT), accounting for various time-varying effects. A parameter characterization model for the oil properties considering gas-liquid phase and pressure is described. Based on the lumped element method, the fluid dynamic model for the working chambers is established, taking account of the variation of the control volume/flow area in the working chambers and leakage. The dynamic model for the free rotor is constructed, accounting for the piston distribution and nonlinear friction. Combining the above models, the speed of the free rotor is solved by the Runge-Kutta method. The SPRHT is simulated in the AMESim. Particularly, a prototype is developed, and the dynamic test is carried out. Then the potential of the nonlinear model for the free rotor is verified. The proposed nonlinear dynamic model of the free rotor can be used for the dynamic behavior analysis and energy efficiency optimization of the HT.

Suggested Citation

  • 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).
    • Handle: RePEc:eee:energy:v:261:y:2022:i:pb:s036054422202237x
    DOI: 10.1016/j.energy.2022.125355
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    References listed on IDEAS

    as
    1. 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.
    2. 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).
    3. Wu, Wei & Hu, Jibin & Jing, Chongbo & Jiang, Zhonglin & Yuan, Shihua, 2014. "Investigation of energy efficient hydraulic hybrid propulsion system for automobiles," Energy, Elsevier, vol. 73(C), pages 497-505.
    4. Zhou, Junjie & Wei, Chao & Hu, Jibin, 2015. "A novel approach for predicting thermal effects of gas cavitation in hydraulic circuits," Energy, Elsevier, vol. 83(C), pages 576-582.
    5. Wu, Wei & Hu, Jibin & Yuan, Shihua & Di, Chongfeng, 2016. "A hydraulic hybrid propulsion method for automobiles with self-adaptive system," Energy, Elsevier, vol. 114(C), pages 683-692.
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