Re: hydralic systems

Posted by JMS/MN on April 19, 2004 at 22:03:51 from (4.143.8.191):

In Reply to: hydralic systems posted by PhilCaseinPA on April 19, 2004 at 09:06:22:

kyhayman has it right. Open center systems, as in older tractors, were simpler, but with today's mondern tractors and increased usage, excessive heat and power loss would develop. Closed center systems deliver power on demand, and only when needed. With hydraulics, you do not have pressure without flow. You cannot have one without the other. A closed center system develops pressure upon demand when you activate the valve. An open center system is always pressurized, but if not being used by a cylinder, hydraulic motor, etc., just goes through the bypass, back to the resevoir- so the pump is always pushing oil through the system.

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