Chapter 3 Hydraulic Pumps 3.1.3 Performance curves Fig.3-2 shows a performance curve of a hydraulic pump,in which the abscissa represents working pressure p of the hydraulic pump and the ordinate the volumetric efficiencyn(or the practical flow rate g),overall efficiencyn and input power P 100% n(q) Fig.3-2 Performance curves of hydraulic pumps Homepage List Upwards Downwards Retumn Exit Chapter 3 Hydraulic Pumps 9 3.1.3 Performance curves Fig.3-2 shows a performance curve of a hydraulic pump, in which the abscissa represents working pressure p of the hydraulic pump and the ordinate the volumetric efficiencyηv (or the practical flow rate q), overall efficiencyη and input powerＰr . Fig. 3-2 Performance curves of hydraulic pumps