基于DOE的液力变矩器进出口角对性能的影响分析
Analysis of the Influence of the Inlet and Outlet Angles of the Torque Converter on Performance Based on DOE

基于某款液力变矩器参数化模型，研究叶栅系统内外环进出口角共12个设计参数对液力变矩器性能影响，并构建近似模型代替原始模型进行性能分析和多目标优化，利用优化拉丁超立方试验设计方法生成150组数据组，进行CFD仿真计算每组性能，对这150组样本点进行敏感性分析，结果表明：涡轮外环出口角对最高效率和失速泵轮扭矩系数的影响最大，泵轮外环进口角对失速变矩比影响最大；同时，涡轮外环进口角和出口角之间有明显的交互效应，在参数调整时应重点考虑；优化后各项性能均有提升。
Based on the parametric model of a hydraulic torque converter, the influence of 12 design param-eters on the performance of the hydraulic torque converter was studied, and an approximate model was constructed to replace the original model for performance analysis and multi-objective optimization. 150 groups of data were generated by using the optimized Latin hypercube experi-mental design method, and the performance of each group was calculated by CFD simulation. Sen-sitivity analysis shows that the outlet angle of turbine outer ring has the greatest influence on the maximum efficiency and stall torque coefficient, and the inlet angle of impeller outer ring has the greatest influence on stall torque ratio; meanwhile, there is obvious interaction between the inlet angle and outlet angle of turbine outer ring, which should be considered in parameter adjustment; after optimization, all performances are improved.