干式离合器摩擦片温度分布

王阳阳; 刘茜

doi:10.19818/j.cnki.1671-1637.2015.04.011

干式离合器摩擦片温度分布

doi: 10.19818/j.cnki.1671-1637.2015.04.011

王阳阳^{1, 2,},
刘茜²

1.
同济大学新能源汽车工程中心, 上海 201804
2.
同济大学汽车学院, 上海 201804

基金项目:

国家自然科学基金项目 51305302

中央高校基本科研业务费专项资金项目 20140440

汽车仿真与控制国家重点实验室开放基金项目 20121104

详细信息

作者简介:
王阳阳(1980-), 女, 安徽肥东人, 同济大学副教授, 工学博士, 从事汽车系统动力学与控制研究

中图分类号: U463.51
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出版历程
- 收稿日期: 2015-03-12
- 刊出日期: 2015-08-25

Temperature distribution of friction plate for dry clutch

WANG Yang-yang^{1, 2
,},
LIU Qian²

1.
Clean Energy Automotive Engineering Center, Tongji University, Shanghai 201804, China
2.
School of Automotive Studies, Tongji University, Shanghai 201804, China

More Information

Author Bio:
WANG Yang-yang(1980-), female, associate professor, PhD, +86-21-69588660, wyangyang@tongji.edu.cn

Article Text (Baidu Translation)

摘要

摘要: 针对干式离合器在汽车传动过程中产生的热失效问题, 研究了摩擦片的温度分布。基于干式离合器的工作原理, 建立了包括主从动部分、摩擦片压力和摩擦因数在内的离合器接合模型。结合轴向弹性作用元件特性和分离轴承与膜片弹簧接触面旋转而与分离拨叉接触面不旋转的结构特点, 将环状压力传感器布置在与分离拨叉的接触面, 估计了实时离合器摩擦片压力。通过干式离合器试验台和摩擦因数模型, 求解了在连续工作400s的摩擦传递转矩和滑摩功, 计算了环境吸热、摩擦生热与对流散热3种边界的摩擦片热负荷, 分析了瞬时冲击接合与频繁接合2种工况下的摩擦片热变形。分析结果表明: 在离合器瞬时冲击2s的接合工况下, 摩擦片热变形最大, 可达0.188mm, 变形后摩擦片的温度显著升高; 在频繁接合工况下, 边界2滑摩热负荷对离合器接合前200s的摩擦片温度分布起主要作用, 边界2、3对流热同时对200s后的温度分布起重要作用。
- 汽车工程 /
- 干式离合器 /
- 温度分布 /
- 热变形 /
- 摩擦传递转矩 /
- 滑摩功 /
- 瞬时冲击接合 /
- 频繁接合
Abstract: In view of the thermal failure of dry clutch in automobile transmission process, the temperature distribution of friction plate was studied.Based on the working principle of dry clutch, the clutch engagement model including its active and driven parts, friction surface pressure and friction coefficient was established. Combined with axial elastic element characteristics and release bearing structure characteristics that the contact surface of diaphragm spring rotates and the contact surface of separated forked plectrum does not rotate, an annular pressure sensor was fixed on the contact surface of separated forked plectrum, and the real-time friction pressure of clutch was estimated.Based on the dry clutch test bench and the friction coefficient model of dry clutch, the friction transfer torque and slipping friction power on the continuous operation of 400 swere estimated.The heat load of friction surface of dry clutch was calculated based on three kinds of boundaries including heat absorption from environment, heat producing by friction, and heat dissipation in convection.The thermal distortions of friction plate in 2 conditions were analyzed, including instantaneous impact engagement and frequent engagement.Analysis result shows that in the condition that the time instantaneous impact engagement is 2s, the maximum heat distortion of friction plate can reach 0.188 mm, and thetemperature of friction plate rises obviously.In frequent engagement condition, the temperature distribution of friction plate mainly depends on the second boundary of slipping friction heat load before 200 sof clutch engagement, and it depends on the second and the third boundary of convective heat after 200 sof clutch engagement.
- automotive engineering /
- dry clutch /
- temperature distribution /
- thermal distortion /
- friction transfer torque /
- slipping friction power /
- instantaneous impact engagement /
- frequent engagement

HTML全文

图 1 离合器接合过程

Figure 1. Engagement process of clutch

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图 2 传动片受力分析

Figure 2. Force analysis of link strip

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图 3 分离轴承压力监测

Figure 3. Pressure monitoring of release bearing

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图 4 压盘受力分析

Figure 4. Force analysis of pressure plate

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图 5 离合器试验台

Figure 5. Test bench of clutch

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图 6 摩擦传递转矩

Figure 6. Friction transfer torques

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图 7 滑摩功

Figure 7. Slipping friction power

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图 8 瞬时冲击接合后的摩擦片变形

Figure 8. Distortion of friction plate after instantaneous impact engagement

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图 9 变形前摩擦片的温度分布

Figure 9. Temperature distribution of friction plate before distortion

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图 10 变形后摩擦片温度分布

Figure 10. Temperature distribution of friction plate after distortion

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图 11 频繁接合过程摩擦片的温度分布

Figure 11. Temperture distribution of friction plate during frequent engagement process

下载: 全尺寸图片幻灯片

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