Suitable for excavator accessories J05E SK350-8 solenoid valve 94200-1221

Electrohydraulic proportional multiway valve load sensing and pressure compensation technology

          Save energy, reduce oil temperature and improve control accuracy, but also make synchronous action several actuator movement do not interfere with each other, now more advanced construction machinery are using load sensing and pressure compensation technology. Load sensing and pressure compensation are a very similar concept, both of which use load changes to cause pressure changes to adjust pump or valve pressure and flow to adapt to the needs of the system. Load sensing for quantitative pumps
In terms of the system, the load pressure load sensing oil circuit is led to the remote pressure regulating relief valve, when the load is small, the relief valve setting pressure is also small; The load is large, the setting pressure is also large, but there is always a certain overflow loss. Variable pump system is the load sensing oil circuit is introduced into the pump variable mechanism, so that the pump output pressure increases with the load pressure (always a small fixed pressure difference), so that the pump output flow and The actual needs of the system are equal, no overflow loss, and energy saving is realized.
 

           Pressure compensation is a guarantee measure to improve valve control performance. The load pressure behind the valve port is introduced into the pressure compensation valve, and the pressure compensation valve adjusts the pressure in front of the valve port so that the pressure difference between the front and back of the valve port is constant, so that the flow regulation characteristic of the throttle port has a large flow through the valve port
Small is only related to the opening of the valve port, and is not affected by the load pressure.