汽车动力耦合系统止推片润滑流场仿真研究  

Simulation Research on Lubrication Flow Field of Thrust Plate in Automobile Dynamic Coupling System

作　　者：李健 赵舟 王小美 王焱 喜冠南 LI Jian;ZHAO Zhou;WANG Xiaomei;WANG Yan;XI Guannan(School of Automotive Engineering,Nantong Institute of Technology,Nantong Jiangsu 226002,China;FAW Wuxi Fuel Injection Equipment Research Institute,Wuxi Jiangsu 214063,China)

机构地区：[1]南通理工学院汽车工程学院,江苏南通226002 [2]中国第一汽车股份有限公司无锡油泵油嘴研究所,江苏无锡214063

出　　处：《机床与液压》2023年第20期205-209,共5页Machine Tool & Hydraulics

基　　金：国家重点研发计划项目(2017YFE0116100);南通市基础科学研究项目(JC2021112,JC2021065);南通市社会民生科技计划项目(MSZ2022186)。

摘　　要：为解决混合动力汽车中动力耦合系统止推片经常损坏的问题,对差速式耦合装置内部齿轮与止推片摩擦面间润滑油膜的流场特性进行研究。通过改变齿轮与止推片之间的间隙,研究两者间的润滑油膜变化趋势。采用Creo三维软件对齿轮与止推片进行建模,使用Fluent软件对模型内部的齿轮、止推片和油、气混合物流场进行网格划分,并对油、气混合物流场进行模拟和分析。结果表明:齿轮与止推片摩擦面存在最佳间隙为0.1 mm,此时止推片半径区域内的润滑油膜流场形成较好,油、气混合物速度场变化波动均较小,有利于延长止推片的使用寿命。In order to solve the problem of the recurrent damage of the thrust plate of the hybrid electric vehicle dynamic coupling system,the characteristics of lubricating oil film flow field between the friction surface of gear and the thrust plate in differential coupling system were studied.The variation trend of lubricating oil film of thrust mechanism was studied by changing the clearance between the gear and thrust plate.3D models of the gear and thrust plate were built by Creo software.Then Fluent was used to grid the gear,thrust plate and oil-gas mixed field inside the model,and the oil-gas mixed field was simulated and analyzed.The analysis shows that:the optimum clearance between gear and thrust plate friction surface is 0.1 mm,the flow field of lubricating oil film within the radius of thrust plate is better,and the fluctuation of the velocity field of oil-gas mixture is smaller.It is beneficial to prolong the service life of thrust plate.

关 键 词：动力耦合系统 止推片 数值模拟 润滑油膜 流场 

分 类 号：U469.7[机械工程—车辆工程]