高速多片湿式离合器低带排转矩参数优化设计*

doi:10.19562/j.chinasae.qcgc.2020.08.011

摘要/Abstract

摘要： 试验发现高速湿式离合器在分离状态下易出现摩擦片与钢片之间的碰撞摩擦,由此引起离合器带排转矩的急剧增大,影响传动装置的工作效率和可靠性。因此,本文中以多片湿式离合器为研究对象,建立了湿式离合器油槽结构与工作参数优化设计模型,以离合器最高工作转速时的带排转矩最小为优化目标,采用基于带排转矩近似模型的优化设计方法,利用最优拉丁超立方试验设计法、椭圆基神经网络模型和多岛遗传算法分别对摩擦片油槽结构参数和离合器工作参数进行了优化设计,并对优化结果进行仿真和试验验证。研究结果表明:摩擦片油槽结构参数中油槽深度和油槽数量对带排转矩的负效应比较明显;离合器工作参数中摩擦副间隙对带排转矩的负效应较明显。

关键词: 湿式离合器, 流固耦合, 碰摩, 带排转矩, 优化设计

Abstract: 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.

Key words: wet clutch, fluid-solid coupling, rub-impact, drag torque, optimization design

张琳, 魏超, 胡纪滨. 高速多片湿式离合器低带排转矩参数优化设计^*[J]. 汽车工程, 2020, 42(8): 1074-1081.

Zhang Lin, Wei Chao, Hu Jibin. Optimization Design of Low Drag Torque Parameters of High-Speed Multi-Plate Wet Clutch[J]. Automotive Engineering, 2020, 42(8): 1074-1081.

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高速多片湿式离合器低带排转矩参数优化设计^*

Optimization Design of Low Drag Torque Parameters of High-Speed Multi-Plate Wet Clutch

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