from the Fig. I guess.... P: ^! N: k5 D! B7 ]/ m: ?% m
. ~7 [( x2 ?- R
variable displacement and fixed displacement pumps ! L3 R3 d3 _6 b% t3 _" _ 3 m. O; `& k2 Z( x1 m3 i; }6 _you can change the swash of one pump to vary the displacement and then change the flow$ E' o: `' m( P9 v4 y3 z( Z
4 x! x' v" [, { R5 F! f
actually the first Fig tells you the relationship of Load pressure and flow . - @6 ^0 [5 `# X
based on it . you can determine the horsepower loss and suitable operating pressure.! q5 {0 m% p; d, M y p
3 R. L0 a& N x, n- H4 J
I guess all above.. not 100% sure