Measurement of dynamic pressure around the vane in an oil hydraulic vane pump

Measurements of the dynamic internal pressures near the vane of a pressure balance type of an oil hydraulic vane pump with intravanes have been made to provide essential information for the study of the pump dynamics and control, the pump design and the analysis of tribological problems in the sliding components. The influences of the discharge pressure and rotating speed of the vane on the dynamic pressure in four chambers surrounding a vane have been investigated. The results indicate that the surge pressures of the chambers at the instant of the start of discharge and closure are affected by the rotating speed, and the pressure in the intravane chamber maintains approximately constant values with marked effect of pulsating discharge pressure.