高速工况下湿式离合器带排转矩特性的仿真与试验研究  

Simulation and Experimental Study on the Drag Torque Characteristics of Wet Clutches in High Speed Condition

作　　者：周晓军[1] 吴鹏辉[1] 杨辰龙[1] 许晋[2] 商晓波 王赵帅 Zhou Xiaojun;Wu Penghui;Yang Chenlong;Xu Jin;Shang Xiaobo;Wang Zhaoshuai(College of Mechanical Engineering,Zhejiang University,Key Laboratory of Advanced Manufacturing Technology of Zhejiang Province,Hangzhou 310027;China North Vehicle Research Institute,National Key Laboratory of Vehicle Transmission,Beijing 100072)

机构地区：[1]浙江大学机械工程学院,浙江省先进制造技术重点实验室,杭州310027 [2]中国北方车辆研究所车辆传动重点实验室,北京100072

出　　处：《汽车工程》2019年第9期1056-1064,共9页Automotive Engineering

基　　金：工信部基础产品创新科研项目(VTDP3203);中央高校基本科研业务费专项资金(2018QNA4001)资助

摘　　要：为研究传统带排转矩模型无法预测的湿式离合器高转速工况下带排转矩回升的特性规律,建立了考虑沟槽和温度效应并包含气液两相的带排转矩数学模型,对模型的分析结果表明,高速工况下,摩擦片与钢片间隙润滑油膜厚度减小造成带排转矩回升的趋势。同时,建立VOF两相流模型,以仿真分析气液两相体积分数的分布规律。最后,针对不同工况进行了相关试验,分析了转速、带排间隙、润滑油流量、润滑油温度、摩擦材料和沟槽等因素对湿式离合器带排转矩的影响规律。In order to study the characteristic rule of wet clutch,i.e.the drag torque rises again in high speed range,which traditional model cannot predicts,a mathematical model with gaseous and liquid two phases is established with consideration of the effects of grooves and temperature,and the analyses on the model reveal that the drag torque shows a certain rise trend again when the speed reaches specific value due to the reduction of oil film thickness in the gap between frictional linings and steel disks.Meanwhile two-phase volume of fluid model is also set up to simulate the distribution rule of the volume fraction of air and oil two phases.Finally,tests on different conditions are conducted to analyze the effects of factors such as speed,drag gap,oil flow rate,oil temperature,frictional material and grooves on drag torque.

关 键 词：湿式离合器 带排转矩特性 仿真 试验 

分 类 号：U46[机械工程—车辆工程]