液力变矩器叶片设计变量空间大，轮系间强流固耦合，使得优化解析时间冗长， 难以实现基于变矩器叶片角变量空间的工程设计． 为此，以双涡轮液力变矩器为研究对 象，实现了基于液力变矩器叶片角主效应分析的设计变量空间优化． 在通过台架实验数据 确认变矩器流固耦合仿真结果正确的基础上，以其轮系8 个叶片角为设计变量空间，采用 最优拉丁超立方设计仿真试验，实现双涡轮液力变矩器性能仿真;以提高变矩器综合性能 ( 效率、变矩比及启动力矩) 为目的，以双涡轮液力变矩器性能与设计变量空间的主效应 图为基础，构造其响应面函数并优化，获得 8 个叶片角对变矩器性能的影响水平． 优化结 果表明:以低速比区最高效率为主要评价指标，泵轮入口角、第 1 涡轮出口角、导轮入口 角、导轮出口角4 个叶片角变量对变矩器性能的影响显著，其他叶片角影响较小或基本无 影响． 文中提出的方法对于同类产品的定制化及其快速化工程设计具有参考价值． 

 As torque converter ( TC) 's blade variable space is large and the fluidsolid coupling is strong， it takes plenty of time to optimize and it's difficult to realize TC's engineering design． Taking dual turbine torque converter ( TTC) as research object， the paper simplifies the variable space of TC based on main effect analysis of blade angles． On the basis of confirming the fluidsolid coupling simulation model's correctness with the data of bench test， the optimal Latin hypercube experiments are designed to realize the performance simulation of TTC with 8 blade angles． Using TC's comprehensive performance ( efficiency，torque ratio and starting torque) as evaluation indexes， the response surface function is built and optimized to get the influence levels of 8 blade angles on the comprehensive performance of TTC． Consequently， for example，using TTC's efficiency at low speed ratio as main evaluation index， it is found that pump's inlet angle，first turbine's outlet angle，stator's inlet angle and outlet angle significantly affect the performance of TTC while other blade angles do not． The research method that the paper proposes has a certain reference value for rapid and customized design of congeneric products．