汽车变速箱换挡比例电磁阀的磁场仿真研究

Simulation Research of Magnetic Field on Gear-Shifting Proportional Solenoid Valve of Transmission

双离合(DCT)变速箱换挡比例电磁阀通电磁化铁芯,使其在电磁吸力的作用下推动阀芯使阀口实现不同开度,以此来对应不同的换挡油路进而实现换挡。通过理论分析了静态电磁力特性曲线、动态电流特性曲线与电磁阀换挡精度和开启时间的关系。采用有限元法对电磁阀建立磁场分析的静态和动态数值模型,并利用Ansoft Maxwell软件进行仿真,研究电磁阀的线圈匝数、隔磁槽位置以及动铁芯厚度等结构参数分别对静态电磁力特性和动态电流特性的影响,为此类电磁阀的设计与研究提供参考。

Double Clutch Transmission （DCT） Solenoid Valve contributes to shift gear using magnetized Core to push plug to open the valve port and connect the gear-shifting circuit. Analysis has been taken to explore the relationship between static electromagnetic force property curve and gear-shifting accuracy, dynamic current property curve and opening velocity. Static and dynamic magnetic numerical models of the solenoid valve has been established by using finite-element method. Utilizing Ansofi Maxwell to do a simulation research on the solenoid valve can get the two kinds of curves mentioned above with different number of turns, positions of isolation groove and thicknesses of core, which could bring some refererwes to designs and studies on solenoid valves.