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Optimization and Influence of Micro-Chamfering on Oil Film Lubrication Characteristics of Slipper/Swashplate Interface within Axial Piston Pump

Author

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  • Jihai Jiang

    (Harbin Institute of Technology, Harbin 150001, China)

  • Zebo Wang

    (Harbin Institute of Technology, Harbin 150001, China)

Abstract

The overturning and eccentric abrasion of the slipper worsens the lubrication characteristics and increases the friction power loss and kinetic energy consumption of the slipper/swashplate interface to reduce the axial piston pump efficiency. A coupling lubrication numerical model and algorithm and a micro-chamfering structure are developed and proposed to predict more precisely and improve the lubrication characteristics of the slipper/swashplate interface. The simulation results reveal that the slipper without micro-chamfering overturns and contacts with the swashplate, while the one with micro-chamfering forms a certain oil film thickness to prevent this contact effectively. The minimum total power loss of the slipper/swashplate interface has to be effectively ensured under the worst working conditions, such as the high pressure, the low speed, the maximum swashplate inclination angle and the minimum house pressure. The optimal micro-chamfering width and depth are 1.2 mm and 3.5 μm or C1.2-3.5, the simulation average oil film thickness of which is approximately equal to the optimal analytical value. The experimental friction power loss of the slipper/swashplate interface is basically consistent with the simulation one, confirming the correctness and effectiveness of the coupling lubrication numerical model, and the optimization method and providing the further design direction of axial piston pumps.

Suggested Citation

  • 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.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:7:p:1961-:d:528839
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    References listed on IDEAS

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    1. Lizhi Shang & Monika Ivantysynova, 2018. "Scaling Criteria for Axial Piston Machines Based on Thermo-Elastohydrodynamic Effects in the Tribological Interfaces," Energies, MDPI, vol. 11(11), pages 1-25, November.
    2. 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.
    3. Yueheng Song & Jiming Ma & Shengkui Zeng, 2018. "A Numerical Study on Influence of Temperature on Lubricant Film Characteristics of the Piston/Cylinder Interface in Axial Piston Pumps," Energies, MDPI, vol. 11(7), pages 1-16, July.
    4. Shaoping Xiong & Gabriel Wilfong & John Lumkes, 2019. "Components Sizing and Performance Analysis of Hydro-Mechanical Power Split Transmission Applied to a Wheel Loader," Energies, MDPI, vol. 12(9), pages 1-19, April.
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