Investigation Method and Mathematical Model of Pressure Losses in Hydraulic Rotary Motor

This paper presents a way of determining the coefficient k₈ of the pressure losses Δp_Mp (flow drag) in internal ducts of SWSB-63 hydraulic motor. The coefficient is determined at a flow rate equal to the theoretical capacity Q_Pt of the pump feeding the motor, the losses are related to the nominal pressure p_n in the hydraulic system. The investigations followed a model of energy performance of hydraulic rotary motor, proposed by Z. Paszota.