CVT轿车液力变矩器的整车匹配优化设计  

Vehicle matching and optimization of hydraulic torque converter in CVT car

作　　者：罗虹[1] 孙新龙[1] 李兴泉[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

出　　处：《重庆大学学报（自然科学版）》2011年第11期20-24,共5页Journal of Chongqing University

基　　金：重庆市科技攻关重大项目(CSTC;2009AC6002)

摘　　要：针对CVT(无级变速器)轿车,提出了一种通过整车匹配优化液力变矩器的方法,即将发动机、液力变矩器和传动系作为一个系统,以整车动力性、经济性为目标进行匹配来优化液力变矩器的参数。这种匹配方法以液力变矩器的循环圆直径为设计变量,选择汽车0～100km/h加速时间和GB 18352.3—2005循环工况油耗作为整车匹配的评价指标。优化得到了液力变矩器最优的循环圆直径。对某轿车的液力变矩器的循环圆直径优化后,仿真结果表明整车的加速时间和循环工况油耗均有所降低。表明了这种匹配方法对液力变矩器的匹配工作有一定的指导意义。A new method is proposed to optimize the hydraulic torque converter of CVT（continously variable transmission） cars by matching the whole vehicle,i.e.,regarding engine,hydraulic torque converter and transmission system as a system and taking the whole vehicle＇s dynamic property and economical efficiency as the target to optimize and improve the parameters of hydraulic torque converter.The designing variable is the circulatory diameter of hydraulic torque converter.Choosing 0~100 km/h accelerate time of full throttle and GB18352.3—2005 cycle fuel consumption as the evaluation indicators of vehicle matching.The best circulatory diameter is obtained by optimizing.The simulation results indicate that optimized accelerating time and fuel consumption reduce,which means this method is helpful for the matching of hydraulic torque converter.

关 键 词：液力变矩器 无级变速器 控制策略 优化 

分 类 号：TH137.5[机械工程—机械制造及自动化]