抄録
The purpose of this research is to get pressure-flow characteristics of V-notch machined on the valve plate of hydraulic pumps and motors. The changes of discharge coefficient are investigated with a basic test device by using the shape of the notch, the openings, the direction of flow, the pressure difference, the back pressure and the like as a parameter. The occurrence of cavitation is observed by means of a transparent apparatus to consider the relation with the discharge coefficient.
