高速多片湿式离合器低带排转矩参数优化设计

It is found in experiments that the rub-impact between the friction plate and steel plate is easy to appear in the separation state of the high speed wet clutch, which results in sharp increase of drag torque of the clutch and affects the efficiency and reliability of transmissions negatively. Therefore, in this paper, taking the multi-plate wet clutch as the research object, an optimization design model of groove structure parameters and working parameters of the wet clutch is established, in which the minimum drag torque at the highest working speed is set as the optimization goal. The optimal design method based on the approximate model of drag torque is adopted. The structural parameters of the friction plate oil grooves and the working parameters of the wet clutch are optimized by using the optimized Latin hypercube experimental design method, the elliptical basis neural network model and the multi-island genetic algorithm. The optimization results are verified by simulation and experiments. The results show that the depth and the number of oil grooves among the structure parameters of the friction plate have obvious negative effects on drag torque; the clearance of friction pair in the working parameters of the clutch has a significant negative effect on drag torque.