摘要
摩擦片沟槽面积和润滑油温度的变化都会影响摩擦副的接触状态,从而对离合器的摩擦磨损特性产生显著影响。本文中建立了摩擦副微凸体接触数值模型,研究了润滑油温度对摩擦副局部接触压力和接触面积的影响;应用离合器台架实验,揭示了摩擦片沟槽面积在不同润滑油温度下对湿式离合器摩擦磨损性能的影响。结果表明:润滑油温度的增加促进了局部接触面积和最高接触压力的增加;随着润滑油温度的升高,不同沟槽面积工况下的摩擦转矩和摩擦因数差异越来越显著;沟槽面积越大,摩擦元件磨损越严重,吸附的炭黑越少。
The changes of groove area of friction disc and the lubricating oil temperature can affect the contact status of friction pair,which has a significant impact on the frictionwear properties of the clutch.A micro-contact numerical model of asperity summits is proposed to investigate the influence of lubricating oil temperature on the local contact pressure and contact area of the friction pair.Meanwhile,the clutch bench test is conducted to reveal the influence of the groove area of the friction disc on the clutch frictionwear properties under different lubricating oil temperatures.The results show that the increase of lubricating oil temperature leads to the rise of the local contact area and the maximum contact pressure.With the increase of the lubricating oil temperature,the differences of the friction torque and friction coefficient are more and more significant under different groove area conditions.With the increase of the groove area,the wear of friction disc becomes more serious and the carbon black absorbed is reduced.
作者
于亮
马彪
郑长松
刘宇键
魏福华
阳仁奇
Yu Liang;Ma Biao;Zheng Changsong;Liu Yujian;Wei Fuhua;Yang Renqi(School of Mechanical Engineering,Beijing Institute of Technology,Beijing 100081;Military Representative Office of the Army Equipment Department in Beijing,Beijing 100072;Military Representative Office of the Army Equipment Department in Xiangtan,Xiangtan 411100)
出处
《汽车工程》
EI
CSCD
北大核心
2021年第10期1536-1542,1564,共8页
Automotive Engineering
基金
国家自然科学基金(51775045,51975047)
工信部基础产品创新科研项目(JCCPCX201705)资助。
关键词
湿式离合器
沟槽面积
润滑油温度
摩擦磨损特性
wet clutch
groove area
lubricating oil temperature
frictionwear properties
作者简介
通信作者:郑长松,副教授,博士,E-mail:zhengchangsong@bit.edu.cn。
