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Analysis and Revision of Torque Formula for Hydro-viscous Clutch

Author

Listed:
  • Xiangping Liao

    (College of Mechanical Engineering, Hunan University of Humanities, Science and Technology, Loudi 417000, China
    State Key Laboratory of High Performance Complex Manufacturing, Central South University, Changsha 410083, China)

  • Shuai Yang

    (College of Mechanical Engineering, Hunan University of Humanities, Science and Technology, Loudi 417000, China)

  • Dong Hu

    (College of Mechanical Engineering, Hunan University of Humanities, Science and Technology, Loudi 417000, China)

  • Guofang Gong

    (State Key Laboratory of Fluid Power Transmission and Control, Zhejiang University, Hangzhou 310027, China)

Abstract

Hydro-viscous clutch is a speed-regulating device for heavy fans and water pumps. It has important engineering significance in the fields of soft-start for rotating machinery. More and more attention has been paid to its torque and control characteristics. This paper is focused on the torque formula for hydro-viscous clutch (HVC), assuming that multi-friction plates distribute ununiformly with different oil film thickness. A mathematical model of friction plates was constructed, then the distribution formula of the oil film thickness was obtained. A new expression was presented using a modified factor. Parameters such as pressure, viscous torque, and oil film thickness were obtained. The results show that each clearance of friction plates is not the same and the distribution of oil film thickness is influenced by pressing force, groove depth, angular ratio of groove/non-groove, and static friction force. To verify the proposed expression, relevant experiments were carried out on an HVC with multi-friction plates, and the experimental results indicate that the new expression is more accurate compared to the original one.

Suggested Citation

  • Xiangping Liao & Shuai Yang & Dong Hu & Guofang Gong, 2021. "Analysis and Revision of Torque Formula for Hydro-viscous Clutch," Energies, MDPI, vol. 14(23), pages 1-14, November.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:23:p:7884-:d:687128
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