油冷电机转子润滑油路流场研究分析

Study and Analysis of Lubricating Oil Flow Field inRotor of Oil-Cooled Motor

以新能源汽车油冷电机某减速器油路为例,通过Workbench抽取了减速器管道油路并命名了边界条件,利用Fluent-meshing对油路进行了网格离散化,利用Fluent软件中realizable k-ε湍流模型对油路进行了数值计算,得出的转子出口流量结果与实验结果对比误差为1.3%;研究油路流场得出了产生能量损失的原因,并设计了3种直角转弯管道,实验分析了未改进及改进后共4种类型管道流场的压降及流线变化,为以后减速器润滑管道油路结构设计提供了理论依据。

Taking a reducer oil circuit of an oil-cooled motor of new energy vehicles as an example,this paper extracted the reducer pipeline oil circuit by Workbench and named the boundary conditions,carried out grid discretization of the oil circuit by using Fluent meshing,and carried out numerical calculation of the oil circuit by using realizable k-εturbulence model in Fluent software.The comparison error between the rotor outlet flow results and the experimental results is 1.3%.The causes of energy loss are obtained by studying the oil flow field,and the pressure drop and flow line changes of the 4 types of pipeline flow fields without improvement and after improvement are designed in three kinds of right-angle turning pipeline experiments,which provides a theoretical basis for the future design of the lubricating pipeline oil path of the reducer.