Abstract: Aiming at the problem that the pressure loss of the electronic water valve of new energy vehicle was too large in the process of coolant regulation, a comprehensive study of channel structure optimization, flow characteristics simulation analysis and experiment analysis was carried out on the existing electronic water valve. Firstly, the orthogonal experiment with four factors and three levels was designed by using DesignExpert software. Then, CFD software was used to simulate the pressure drop of the structure before and after optimization and analyze the flow characteristics under different valve opening. Finally, a pressure drop test platform was built, and the simulation results with the experiment results was verified. The results show that, after the simulation analysis, the maximum through valve pressure drop of the optimized electronic water valve can be reduced by 63%, the maximum bypass valve pressure drop can be reduced by 54.3%, and the pressure distribution and velocity change of the flow field is significantly improved. Through the test, the through valve pressure drop of the electronic water valve is reduced by 57.5%, and the bypass valve pressure drop is reduced by 49.9%. The relative error between the test value and the simulation value is less than 15%, which verifies the correctness of the simulation.

Key words:  electronic water valve;flow regulation;channel structure optimization;flow characteristics;pressure drop test;experimental research

ZHANG Bo, ZHANG Li, WANG Hong-wei, et al. Structural optimization simulation and experimental research of electronic water valve［J］.Journal of Mechanical & Electrical Engineering, 2021,38(11):1410-1416.