双模式机电复合无级传动功率分流特性分析  

Power-Split Characteristic Analysis of the Two-mode Electro-mechanical Variable Transmission System

作　　者：吉雅太 王伟达 项昌乐 韩立金 

机构地区：[1]京理工大学机械与车辆学院,北京100081 [2]车辆传动国家重点实验室,北京100081

出　　处：《机械传动》2014年第4期94-98,103,共6页Journal of Mechanical Transmission

基　　金：国家自然科学基金项目(51005017)

摘　　要：机电复合无级传动既可调节发动机工作点提高发动机燃油经济性,又可充分利用机械传动效率高的优点,是重型车辆实现电力混合驱动的良好解决方案。利用多个行星排进行功率分流和汇流的双模式机电复合无级传动可进一步拓宽传动机构的变速范围,减小匹配电机的功率和行星排的尺寸。以转速与转矩分流为基本出发点划分了机电复合传动形式,据此提出了一种不依赖具体的行星排连接方案与行星排参数的机电复合无级传动功率分流特性的表述公式,根据该公式针对包括两种功率分流拓扑形式的某双模式机电复合传动方案进行了功率分流特性计算与分析。分析结果表明,该功率分流特性表述方式更能直观的反应某种功率分流拓扑结构的共性特征,对于机电复合传动行星排连接方案优选与方案参数匹配具有一定的指导意义。Electro--mechanical variable transmission （EVT） system can enhance the fuel economy by adjusting the engine operating points, and take full advantage of high efficiency of the mechanical transmission. So it is a good solution for applying the hybrid electrical driving to the heavy vehicle. The two--mode EVT which extends the speed variable range by using multi planetary gears can de- crease the power requirement of the motors and the dimension of the planetary gear row. The scheme of the EVT is divided based on the speed split and the torque split. Then the description equations of the power split characteristics are proposed which don＇t depend on the planetary combining diagram and the parameters. A two--mode EVT which includes two topology structure of power split is calculated and analyzed by these equations. The analysis results indicate that the description equations of the power split can reflect the common features of a special topology structure, and it is significant for the planetary combining diagram and the parameter configuration of the EVT.

关 键 词：机电复合无级传动 功率分流特性 双模式 

分 类 号：TH132[机械工程—机械制造及自动化]