分动器用湿式单离合器钢片轴向温度场分布研究  

Research on Axial Temperature Field Distribution of Transfer Case Wet Single Clutch

作　　者：徐占 屠有余 刘振宇 倪家傲 刘伟东 Xu Zhan;Tu Youyu;Liu Zhenyu;Ni Jia’ao;Liu Weidong(Global R&D Center,China FAW Corporation Limited,Changchun 130013)

机构地区：[1]中国第一汽车股份有限公司研发总院,长春130013

出　　处：《汽车文摘》2024年第6期45-51,共7页Automotive Digest

摘　　要：以适时分动器用湿式离合器为研究对象,搭建离合器传递扭矩热力学模型,估算离合器传递扭矩及对流换热因数,提取影响钢片温度的关键因素,并对关键因素开发钢片温度动态测试物理模型。基于实测结果,分析不同钢片轴向温度场分布规律,优化离合器冷却油道,实现了不同钢片最大温度差降幅达74.6%,有效提升离合器传递扭矩能力,同时进行不同油温、扭矩、转速差下的离合器温度模型深度标定,实现分动器实车精准传递扭矩能力的同时,仍具备可靠的热保护功能。Taking wet clutch as the research object,through theoretical calculation of coupling steel temperature of clutch,the clutch torsional and convective heat transfer coefficients are estimated by establishing the clutch torsional thermodynamic model.The main factors affecting the accuracy of calculation are extracted,and a physical model for dynamic measurement of steel sheet temperature is developed for key factors.Based on the measured results,the distribution law of axial temperature field of different steel plates is analyzed,the cooling oil passage of the clutch is optimized,the maximum temperature difference of different steel plates is reduced by 74.6%,which effectively improves the transmission torque of the clutch.At the same time,the clutch temperature model in-depth calibration under different oil temperature,torque and speed difference is carried out,which realizes the precise torque transfer ability of the transfer case while still secures the function of reliable thermal protection function.

关 键 词：湿式单离合器 钢片温度 温度模型 动态测试 

分 类 号：U463.215[机械工程—车辆工程]