Hydraulic Closed Center System

{0 Comments}

Hydraulic close center system
Hydraulic close center system

In closed center system the hydraulic pump can rest when the oil is not required to operate a function. This circuit uses a control valve which is closed in the center to stop the oil flow from the pump. The figure above shows a hydraulic closed-center system.

On closed-center system, the quantity of oil to each function can be controlled by line size or valve size or by orificing. The other advantages of a closed-center system are as follows:

• The system does not require relief valves because the pump automatically shuts off when standby pressure is reached.
• The size of the lines, valves, and cylinders can be designed to fit the flow requirements of each function.
• Reserve flow can be maintained to ensure full hydraulic speed at low engine revolutions per minute (rpm).
• The closed-center system is more efficient on functions such as brakes, which require high force on a very little piston movement. By holding the valve open, standby pressure is constantly applied to the brake piston with no efficiency loss because the pump has returned to standby.

None found.

Leave a Comment

Your email address will not be published.

You might also likeclose