Komatsu PC200-8M0 Shop Manual page 167

402 Hydraulic system, Part 2
Functions and operation by valve
Area ratio of pressure compensation valve
Function
The state of division changes according to the area ratio of pressure compensation portions (A1) and
q
(A2). Area ratio = (A2)/(A1)
q When the area ratio is equal to 1: As the spool meter-in downstream pressure is equal to the maximum
load pressure, the oil flow is divided in the ratio as same as the opening area ratio.
When the area ratio is more than 1: As the spool meter-in downstream pressure is higher than the max-
q
imum load pressure, the oil flow to the compensated side is divided in a ratio lower than the opening
area ratio.
When the area ratio is below 1: As the spool meter-in downstream pressure is lower than the maximum
q
load pressure, the oil flow to the compensated side is divided in a ratio higher than the opening area
ratio.
PC200, 200LC, 220, 220LC-8M0
SEN06120-00
25
10-402