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10 STRUCTURE AND FUNCTION
SURFACE AREA RATIO OF PRESSURE COMPENSATION VALVE OF CONTROL
VALVE
FUNCTION OF SURFACE AREA RATIO OF PRESSURE COMPENSATION VALVE
OF CONTROL VALVE
•
The dividing condition varies with the surface area ratio of (A1) and (A2) for the pressure compensation.
Surface area ratio = (A2)/(A1)
•
When the surface area ratio is 1, the spool meter-in downstream pressure is equal to the maximum load
pressure, and oil flows corresponding with the opening area ratio.
•
When the surface area ratio is larger than 1, the spool meter-in downstream pressure is higher than the
maximum load pressure, and the oil flow is divided less than the surface area ratio.
•
When the surface area ratio is smaller than 1, the spool meter-in downstream pressure is lower than the
maximum load pressure, and the oil flow is divided more than the surface area ratio.
PC500LC-10R
COMPONENT PARTS OF HYDRAULIC SYSTEM
10-149
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