混联式HEV发动机输出转矩实时测算方法  

Engine Output Torque Real-time Calculation for Parallel-serial HEV

作　　者：郭海龙[1,2] 李礼夫[1,3] 

机构地区：[1]华南理工大学机械与汽车工程学院,广州510640 [2]广东交通职业技术学院汽车学院,广州510650 [3]重庆大学机械传动国家重点实验室,重庆400030

出　　处：《农业机械学报》2011年第10期30-34,共5页Transactions of the Chinese Society for Agricultural Machinery

基　　金：机械传动国家重点实验室开放基金资助项目(L2008011);汽车动态模拟国家重点实验室开放基金资助项目(20071107)

摘　　要：针对混联式混合动力电动汽车(HEV)发动机输出转矩估计存在误差,进而导致HEV能量控制策略无法得以准确实现的问题,以行星齿轮混联式HEV为研究对象,分析了动力耦合机构的参数,并应用行星齿轮传动动力学模型及效率模型,推导得出了行星齿轮混联式HEV发动机输出转矩的估计算法。理论计算及实车测试结果表明,模型计算值与实车测试值之间的最大相对误差由5%～8%减小为3.94%。Aiming at the problem of error between the actual value and estimated value of engine＇s dynamic torque,as well as HEV＇s energy control strategy cannot be executed accurately.Taken parallel-serial HEV as an example,the parameters of power coupling mechanism were analyzed.Planet gear power coupling mechanism＇s dynamics characteristic and efficiency characteristic were applied to deduce the algorithm of engine output torque calculation method for parallel-serial HEV.The experiment results showed that the maximum relative error of engine dynamic torque between theory calculating and experiment testing was decreased from 5%~8% to 3.94%.

关 键 词：混联式 混合动力电动汽车 行星齿轮 发动机转矩 

分 类 号：U469.7[机械工程—车辆工程]