Computational Analysis of Pressure Control Characteristics in a VFS Solenoid Valve

A solenoid valve is a mechanical part used to generate spatial movement by an electrical signal. A number of solenoid valves have already been used in the electronic control systems of automobile parts. A solenoid valve used in an automobile is divided into the amplitude-modularity solenoid valve and the VFS solenoid valve according to the operational method. A VFS solenoid valve has a short opening delay time and has advantages of a simple structure, compact size, and little fluctuation pressure compared with the amplitude-modularity solenoid valves. In the present paper, the pressure control characteristics have been performed numerically in the VFS solenoid valve. Dynamics analyses of the pressure control characteristics have been evalvated by the Finite Different Method, which show the pressure distribution in the VFS solenoid valve. The results of numerical analyses show the dependence of pressure distribution on the displacement of the spool in the VFS solenoid valve, and then, are compared with the experimental results.