插装式流量放大阀反馈槽预开量对其性能的影响

Valvistor valve which used the flow feedback principle have many benefits including low leakage and big flow capacities and an economical design, has been widely used in hydraulic systems. The underlap in the poppet valve has a significant effect on the flow capacity and static performance. In this paper, The hydraulic system model of the valve is established by using the simulation software-SimulationX. Measurements on the valve were made to validate the valve model.. Compares the effects of different underlap in the poppet on performance of the spool. The results show that the the main poppet always has to maintain an opening to guarantee stability, but the underlap reducing the flow capacity of the valve. The results provides a theoretical basis for the performance improvement of the valve.