基于响应面的液力变矩器叶片优化设计  

Optimized Design of Blade of Hydraulic Torque Converter Based on Response Surface Method

作　　者：李兴泉[1] 邓兆祥[1,2] 章竟成[1] 李英强[1] 王腾腾[1] 

机构地区：[1]重庆大学机械传动国家重点实验室,重庆400030 [2]汽车噪声振动和安全技术国家重点实验室,重庆400039

出　　处：《华南理工大学学报（自然科学版）》2011年第11期149-154,共6页Journal of South China University of Technology(Natural Science Edition)

基　　金：重庆市科技攻关重大项目(CSTC;2009AC6002)

摘　　要：针对现有变矩器性能分析方法的不足,在液力变矩器三维流场数值模拟的基础上,采用响应面法对叶片进行优化.首先根据变矩器流场模拟结果,并考虑机械损失的影响,计算变矩器效率、变矩比等输出特性;然后以最高效率为优化目标、起动变矩比为约束条件、二阶多项式为响应面函数,采用正交试验法设计试验样本,建立叶片优化模型并进行优化计算.计算结果表明,优化后变矩器的最高效率提高了3个百分点,起动变矩比提高了4.5%,证明该液力变矩器叶片优化方法可行.In order to overcome the disadvantages of the existing performance analysis methods of torque converters,the response surface method is adopted to optimize the blade parameters of hydraulic torque converter based on the three-dimension flow simulation.In the investigation,first,the efficiency and torque ratio of the torque converter are calculated according to the simulated results and considering mechanical loss.Then,an optimal model of the blade is established based on the results of orthogonal test,with the highest efficiency as the target function,the starting torque ratio as the constraint and with a second-order polynomial as the response surface function.Finally,a optimization calculation is performed based on the proposed model.The results indicate that,after the optimization,the top efficiency increases by 3 points of percentage and the starting torque ratio increases by 4.5%,which means that the proposed method is feasible.

关 键 词：液力变矩器 优化设计 响应面法 正交试验 变矩器效率 起动变矩比 

分 类 号：U270.2[机械工程—车辆工程]