Piston Displacement (Vd)
If piston is neglected
Vd= LAN Na
Where: Na = if 2 (double action)
A = π/4(D^2)
N = rpm
L = length of stroke
Piston Displacement (Vd)
If Piston rod is considered
Vd = (2LANNa)cyl - (LAN)piston rod
Actual Discharge (V.)
V. = A V
Where: the same as V heheh sa pump
Slip (S)
S = Vd - V.
Vd = displacement
V. Actual Discharge
Percent Slip (%S)
%S = S / Vd
= Vd - V /Vd
Volumetric Efficiency (ev)
ev = V. / Vd