A Study of the Possibility of Application of the Advanced Hypertrochoid Curve in the Inner Surface of the Stator of the Hydraulic Balance Vane Pump

2 Abstract: In the latest our works, Performance of a fixed displacement-hydraulic balance vane pump, theoretically and practically was studied by application of the basic hypertrochoid curve in the inner surface of its stator. Also the effect of the inertial force of the vanes on the performance of the pump with this curve, a theoretical analysis of the internal pressure distribution in the pump and of the resulting forces and torques applied to its components were studied. This study presents the possibility of application of the advanced hypertrochoid curve in the inner surface of its stator. By using this curve in the inner surface of the stator, we are desirous of improving a sealing action between pressure and suction sides of the pump, in addition to improving of the inertial reaction of the vanes in each position where these vanes have a radial movement because, it causes a smooth sliding motion of the vanes and hence, a higher performance of the pump while attaining a longer life of it because of decreasing vane- tip and inner surface of stator wear and decreasing of vibration, noise and high stresses.