Numerical Investigation of Solenoid Valve Flow Field in Decoupled Brake-by-Wire System

The decoupling brake-by-wire system controls the key components of the flow path and liquid flow of the whole brake system through the solenoid valve of the bottom control unit. The reference cross-sectional area value at the valve inlet is obtained by calculation, and the valve body structure model is established. The flow channel structure is extracted, and the porous media model is used to replace the fluid area of the filter screen at the entrance of the solenoid valve. The Fluent software is used to analyze the influence on the flow characteristics of the solenoid valve with or without a filter. The accuracy of the model is verified by the experimental results, which also show that the porous medium can effectively and accurately reflect the characteristics of the solenoid valve end filter. Based on the simulation model, the influences of parameters such as the diameter of the solenoid valve inlet, cone angle and spool stroke on the internal flow field characteristics of the solenoid valve are analyzed, and the methods to improve the internal flow field characteristics of the solenoid valve are put forward.