The Dynamic Characteristics of Oil Hydraulic Control Valve

Abstract

This paper presents a new method for the calculation of the fluid flow forces acting on a valve. Its theory is based on the momentum theory and can explain the inertial force of fluid which was not considered in the former momentum theory. As an example, the dynamics of a single stage relief valve was studied analytically and experimentally. The transient response of the valve was calculated with the original nonlinear form and with a linearized form. Numerical results show the linearization does not carry much error and the linearized equations show that which are useful to explain experimental results.