Pressure Variation in Sealed Cavity and Force Analysis on Vanes in Variable Displacement Vane Pumps

ZHANG Guo-tao; YIN Yan-guo

doi:10.3879/j.issn.1000-0887.2014.04.006

Volume 35 Issue 4

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ZHANG Guo-tao, YIN Yan-guo. Pressure Variation in Sealed Cavity and Force Analysis on Vanes in Variable Displacement Vane Pumps[J]. Applied Mathematics and Mechanics, 2014, 35(4): 401-411. doi: 10.3879/j.issn.1000-0887.2014.04.006

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Pressure Variation in Sealed Cavity and Force Analysis on Vanes in Variable Displacement Vane Pumps

doi: 10.3879/j.issn.1000-0887.2014.04.006

School of Mechanical and Automotive Engineering, Hefei University of Technology, Hefei 230009, P.R.China

Funds: The National Natural Science Foundation of China(50975072)

Received Date: 2013-08-14
Rev Recd Date: 2014-02-27
Publish Date: 2014-04-15

Abstract

Abstract

Aimed at the characteristics of large pressure variation in sealed cavity of transition zones and difficulty in vanes’protraction from the rotor slot of the variable displacement vane pump, the pressure distribution around the damping groove and its kinetic effects on the vane tip were investigated through MATLAB simulation. The results show that introduction of the damping grooves can effectively reduce the hydraulic shock and pressure jump caused by large pressure difference in the pump; it also can lower the peak of pressure gradient. Consideration of the leakage at friction pairs does not reduce the efficiency of pre-pressurizing and pre-depressurizing processes, but lowers the peak of pressure gradient and smooths the pressure distribution in transition zones. Compared with the traditional spired vane, the round vane has no difficulty in protraction in the transition zones under high working pressure, and has smoother contact force change at the vane tip.
- variable displacement vane pump,
- sealed cavity,
- leakage,
- pressure distribution,
- force analysis

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References(13)

References

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