Based on the frictional mechanism of a wet clutch, frictional models of wet clutch engagement were established using the modified Reynolds equation and the elastic contact model between frictional pairs. Then, the heat flux models for the viscous shear and asperity friction were built, and the two-dimensional transient thermal models for the separator plate, friction disk, and ATF heat convection model were deduced based on the heat transfer theory and conservation law of energy. Finally, the Runge–Kutta numerical method was used to solve the frictional and thermal models. The average temperature of the separator plate, friction disk, and ATF were calculated. The effects of operating and material parameters, such as applied pressure, initial angular velocity, friction lining permeability, surface combined roughness RMS, equivalent elastic modulus, and ATF flow, on the thermal characteristics of friction pairs and ATF during engagement, were studied. The simulation results show that the temperature characteristics of the separator plate, friction disk, and ATF depend mainly on the viscous shear and asperity friction heat flux, and that the operating and material parameters of the wet clutch also have significant impacts on the overall variation trend of the thermal characteristics of the separator plate, friction disk, and ATF.

基于湿式离合器的摩擦机理，利用改进的雷诺方程和摩擦副之间的弹性接触模型建立了湿式离合器啮合的摩擦模型。然后，建立了粘性剪切和粗糙摩擦的热通量模型，基于传热理论和能量守恒定律推导出了隔板、摩擦盘和ATF热对流模型的二维瞬态热模型。 . 最后，使用 Runge-Kutta 数值方法求解摩擦和热模型。计算隔板、摩擦盘和ATF的平均温度。操作和材料参数的影响，例如施加的压力、初始角速度、摩擦片渗透率、表面组合粗糙度 RMS、等效弹性模量、和 ATF 流动，研究了啮合过程中摩擦副和 ATF 的热特性。仿真结果表明，隔板、摩擦盘和ATF的温度特性主要取决于粘性剪切和粗糙摩擦热通量，湿式离合器的运行和材料参数也对整体变化趋势有显着影响隔板、摩擦盘和 ATF 的热特性。