Pressure and Flow Ripples of a Variable Displacement Vane Pump : 1st Report, Experiments

Abstract

Pressure and flow ripples of a variable displacement vane pump with a pressure compensator were experimentally studied. Experiments were carried out under a lock condition where a cam ring was fixed and an unlock condition where the ring was supported with a spring of a compensator. The effect of rotating speed, averaged eccentricity of the cam ring and averaged discharge pressure on the pressure ripple were examined, based on the results of Fourier analysis of pressure data, and we measured the pressure variation of a pumping chamber. eccentricity, reaction force on a cam ring and discharge flow rates, using a hot-wire anemometer.