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Experimental Study on the Influence of the Rotating Cylinder Block and Pistons on Churning Losses in Axial Piston Pumps

Author

Listed:
  • Junhui Zhang

    (State Key Laboratory of Fluid Power and Mechatronic Systems, Zhejiang University, Zheda Road 38, Hangzhou 310027, China)

  • Ying Li

    (State Key Laboratory of Fluid Power and Mechatronic Systems, Zhejiang University, Zheda Road 38, Hangzhou 310027, China)

  • Bing Xu

    (State Key Laboratory of Fluid Power and Mechatronic Systems, Zhejiang University, Zheda Road 38, Hangzhou 310027, China)

  • Min Pan

    (Department of Mechanical Engineering, University of Bath, Bath BA2 7AY, UK)

  • Fei Lv

    (State Key Laboratory of Fluid Power and Mechatronic Systems, Zhejiang University, Zheda Road 38, Hangzhou 310027, China)

Abstract

Pressure and performance requirements of axial piston pumps and the proportion of churning losses in axial piston pumps increase significantly with increasing speed. To investigate the primary distribution of churning losses in axial piston pumps at various ranges of speed, a test rig was set up in which other friction losses can be eliminated, thus making it possible to investigate the net churning losses in an axial piston pump. The influence of the rotating cylinder block and pistons on churning losses is analyzed based on a qualitative evaluation of the various fluid flow regimes at different test speeds in an axial piston pump. The analytical results indicate that pistons have less influence on churning losses than the rotating cylinder block beyond the critical speed in axial piston pumps, because the total energy dissipation transforms laminar viscous friction losses into turbulent shear stress losses. It is concluded that more attention should be given to the effect of the rotating cylinder block on churning losses in axial piston pumps at high rotation speed.

Suggested Citation

  • Junhui Zhang & Ying Li & Bing Xu & Min Pan & Fei Lv, 2017. "Experimental Study on the Influence of the Rotating Cylinder Block and Pistons on Churning Losses in Axial Piston Pumps," Energies, MDPI, vol. 10(5), pages 1-15, May.
    • Handle: RePEc:gam:jeners:v:10:y:2017:i:5:p:662-:d:98120
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    References listed on IDEAS

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    1. Divya Thiagarajan & Andrea Vacca, 2017. "Mixed Lubrication Effects in the Lateral Lubricating Interfaces of External Gear Machines: Modelling and Experimental Validation," Energies, MDPI, vol. 10(1), pages 1-20, January.
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    Cited by:

    1. Andrea Vacca, 2018. "Energy Efficiency and Controllability of Fluid Power Systems," Energies, MDPI, vol. 11(5), pages 1-6, May.
    2. Qun Chao & Junhui Zhang & Bing Xu & Yaoxing Shang & Zongxia Jiao & Zhihui Li, 2018. "Load-Sensing Pump Design to Reduce Heat Generation of Electro-Hydrostatic Actuator Systems," Energies, MDPI, vol. 11(9), pages 1-13, August.
    3. Jihai Jiang & Zebo Wang, 2021. "Optimization and Influence of Micro-Chamfering on Oil Film Lubrication Characteristics of Slipper/Swashplate Interface within Axial Piston Pump," Energies, MDPI, vol. 14(7), pages 1-19, April.
    4. Ruizhe Li & Yuhuan Du & Yang Yu, 2022. "Research on Refined Modeling and Fuzzy Control of Electro-Hydrostatic Actuator with Co-Simulation Method," Energies, MDPI, vol. 15(23), pages 1-25, December.
    5. Yu Huang & Jian Ruan & Yong Chen & Chuan Ding & Sheng Li, 2020. "Research on the Volumetric Efficiency of 2D Piston Pumps with a Balanced Force," Energies, MDPI, vol. 13(18), pages 1-16, September.
    6. Chuan Ding & Yu Huang & Lichao Zhang & Jian Ruan, 2021. "Investigation of the Churning Loss Reduction in 2D Motion-Converting Mechanisms," Energies, MDPI, vol. 14(5), pages 1-14, March.

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