多油槽滑动轴承中油槽泄油量变化规律研究  

Study on the Variation Law of Oil Groove Leakage in Multi-groove Sliding Bearings

作　　者：董朵 李超 朱纪宾 刘泉 张金芳 DONG Duo;LI Chao;ZHU Jibin;LIU Quan;ZHANG Jinfang(State Key Laboratory of Engine and Powertrain System,Weichai Power Co.,Ltd.,Weifang Shandong 261061,China)

机构地区：[1]内燃机与动力系统全国重点实验室,潍柴动力股份有限公司,山东潍坊261061

出　　处：《润滑与密封》2024年第9期142-147,共6页Lubrication Engineering

摘　　要：多油槽滑动轴承的油槽泄油量偏大,可能导致润滑系统压力低。为优化多油槽结构滑动轴承结构设计,针对某柴油机中间齿轮使用的多油槽滑动轴承展开研究,分析工况参数及油槽结构设计变化对油槽泄油量的影响。采用STAR-CCM+软件进行瞬态CFD计算,通过调整滑动轴承转速、供油压力、油槽油道数量以及轴向油槽深度,探究油槽泄油量的变化规律。结果表明:滑动轴承转速对油槽泄油量平均值影响很小;油槽泄油量平均值随着供油压力降低而降低,且降速逐步加快;减少油槽或油道数量都可以降低油槽泄油量,其中前者影响大,后者影响小;随轴向油槽深度减小,油槽泄油量的平均值先是近似于线性降低,到达一定深度值后降速逐步减缓。仅保留1个轴向油槽且将其深度减小到0.4 mm,是较好的设计方案。研究结果为多油槽滑动轴承的低泄油量设计提供了参考。The excessive oil leakage in the oil groove of multi-groove sliding bearings may lead to low lubrication system pressure.To optimize the structural design of multi-groove sliding bearings,the influence of working conditions and oil groove structural design changes on the oil groove leakage was analyzed.STAR-CCM+software was used for transient CFD calculation,and by adjusting the speed of the sliding bearing,the oil supply pressure,the number of oil grooves and galleries,and the depth of the axial oil groove,the variation law of oil groove leakage was studied.The results show that the rotating speed of the sliding bearing has little effect on the average oil groove leakage.The average oil groove leakage decreases with the decrease of oil supply pressure,and the decreasing rate gradually accelerates.Reducing the number of oil grooves or galleries can both reduce the average oil groove leakage,and the former has a large impact and the latter has a small impact.As the axial groove depth decreases,the average oil groove leakage decreases approximately linearly at first,and then slows down gradually after reaching a certain depth value.It is a better design scheme to retain only one axial oil groove and reducing its depth to 0.4 mm.The research results provide reference for the low oil leakage design of multi-groove sliding bearing.

关 键 词：滑动轴承 多油槽 泄油量 润滑性能 

分 类 号：TH117.2[机械工程—机械设计及理论] TK422[动力工程及工程热物理—动力机械及工程]