The Effect of Valve Core Diameter on the Performance of Hydraulic Poppet Valve

The computational fluid dynamics method was adopted to analyze the different inner flow fields of hydraulic poppet valve.With different valve core diameters,the discharge coefficient and steady flow force of hydraulic poppet valve in different uncork were compared and analyzed.The results show that: corresponding to the same uncork,the change of valve core diameter do not cause changes of the flow and discharge coefficient is nearly 0.85;the effects of valve core diameter on the valve core force and steady flow force are small.They provide reference for structure design of hydraulic poppet valve.