Abstract: This article proposes an equivalent calculation method for the equivalent liquid flow length and equivalent liquid flow diameter of different shapes of lubricating oil passages in the transmission during the forward development and design process of transmission products, taking into account the heat dissipation requirements of some components such as bearings and clutches in the mechanical body of the transmission. This is used as the basis for setting parameters in the simulation model, the cooling lubrication flow rate in the hydraulic lubrication system of the transmission is simulated using AMESim simulation software, and the flow distribution status under the maximum power, maximum speed, and maximum torque conditions of the transmission is calculated. The final flow distribution plan is determined through continuous iterative calculations.

Key words: Flow distribution; Overflow cross-section; Equivalent liquid flow length; Equivalent liquid flow diameter; Lubrication requirements

摘要： 文章在变速器产品正向开发设计过程中，考虑变速器机械本体中轴承和离合器等部分 组件的散热需求的情况，提出了变速器内不同形状润滑油道过流截面当量液流长度和当量液 流直径的等效计算方法，并以此作为仿真模型的参数设定基础，通过 AMESim 仿真软件对变 速器液压润滑系统中的冷却润滑流量进行仿真，分别计算了变速器最大功率、最大转速、最 大扭矩工况下的流量分配状态，通过不断的迭代计算确定了最终的流量分配方案。

关键词: 流量分配；过流截面；当量液流长度；当量液流直径；润滑需求