Journal of Mechanical Science and Technology

The Korean Society of Mechanical Engineers (대한기계학회)
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The Lubrication Characteristics of the Vane Tip Under Pressure Boundary Condition of Oil Hydraulic Vane Pump

  • Cho Ihn-Sung (Division of Mechanical & Aerospace System Engineering, Chonbuk National University) ;
  • Oh Seok-Hyung (Faculty of Mechanical Engineering, Kunsan National University) ;
  • Song Kyu-Keun (Division of Mechanical & Aerospace System Engineering and RCIT, Chonbuk National University) ;
  • Jung Jae-Youn (Division of Mechanical & Aerospace System Engineering and RCIT, Chonbuk National University)
  • Published : 2006.10.01
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Abstract

The Lubrication Mode of line contacts between the vane and the camring in an oil hydraulic vane pump has been investigated. First, the variations of the radial force of a vane were calculated from previous measurements of dynamic internal pressure in four chambers surrounding a vane. Next, the lubrication modes were distinguished with Hooke's chart, which is an improvement over Johnson's chart. Finally, the influence of the boundary conditions in the lubrication region on the fluid film lubrication was examined by calculating the film pressure distributions. The results showed that the lubrication mode of the vane tip exists in the rigid-variable-viscosity region, and that discharge pressure higher than 7 MPa greatly affects the oil film pressure in the small and the large arc section because of the Piezo-viscous effect.

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References

  1. Cho, I. S., Oh, S. H. and Jung, J. Y., 2005, 'The Lubrication Characteristics of the Vane Tip Under the Inlet Pressure Boundary Conditions for an Oil Hydraulic Vane Pump,' Journal of Mechanical Science and Technology, Vol. 19, No. 12, pp.2179-2186.(Korea) https://doi.org/10.1007/BF02916457
  2. Hooke, C. J., 1977, J. Mech. Eng. Sci., Vol. 19, No.4, pp. 149 https://doi.org/10.1243/JMES_JOUR_1977_019_034_02
  3. Johnson, K. L., 1970, 'Regimes of E1asto Hydrodynamic Lubrication,' J. Mech. Eng. Sci., Vol. 12, No.1, pp. 9 https://doi.org/10.1243/JMES_JOUR_1970_012_004_02
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