重型汽车离合器的散热改进措施  

Heat Dissipation Improvement of the Clutch for Heavy-duty Vehicle

作　　者：赵轩 刘欢 李庚璋 ZHAO Xuan;LIU Huan;LI Gengzhang(Automotive Engineering R&D Institute,Shaanxi Heavy Duty Automobile Company Limited,Xi’an 710200,China)

机构地区：[1]陕西重型汽车有限公司汽车工程研究院,陕西西安710200

出　　处：《汽车实用技术》2022年第21期108-111,共4页Automobile Applied Technology

摘　　要：重型汽车在起步时,离合器中的飞轮和从动盘由分离状态变为完全接合。分离状态时,离合器中的飞轮由发动机驱动旋转,从动盘无动力来源;而接合时,从动盘转速不断增加,主从动件间产生相对滑动,会造成压盘、飞轮等零部件温度升高。如果摩擦表面温度过高,会加剧摩擦片磨损,并将严重影响离合器正常工作和使用寿命。文章从优化离合器通风散热的角度,对三种不同结构的离台器进行热平衡分析,根据各结构离合器平衡后的温度分布,得到一种较优的离合器散热改进方案。During the start of the heavy-duty vehicle,the flywheel and driven plate of the clutch change from a separated state to a fully engaged state.In the separated state,the flywheel of the clutch is driven to rotate by the engine,and the driven plate has no power source.And in the engaged state,as the speed of the driven plate continues to increase,the relative sliding occurs between the driving and the driven part,which will cause the temperature of the pressure plate and the flywheels to rise.If the temperature of the friction surface is too high,it will aggravate the friction lining wear,and will seriously affect the normal operation and service life of the clutch.In this paper,the thermal balance of three clutches with different structures was analyzed,and a better solution to improve the heat dissipation of the clutch was obtained according to the temperature distribution of the thermal balance for the clutch with different structures.

关 键 词：重型汽车 离合器 通风散热 热平衡分析 散热优化 

分 类 号：U463.2[机械工程—车辆工程]