车用IVT设计与仿真研究  

IVT design and simulation research on automotive applications

作　　者：王振[1,2] 崔亚辉[1] 刘凯[1] 徐琳[1] 

机构地区：[1]西安理工大学机械与精密仪器工程学院,陕西西安710048 [2]榆林学院能源工程学院,陕西榆林719000

出　　处：《西安理工大学学报》2017年第1期53-59,73,共8页Journal of Xi'an University of Technology

基　　金：国家自然科学基金资助项目(51175419);陕西省教育厅专项科研计划项目(16JK1898);榆林学院高层次人才科研启动基金项目(11GK48)

摘　　要：提出IVT的一种设计方案,确保传动效率大于40%和调速范围大于6。给出单环路系统过零调速条件、IVT的功率流和效率特性,通过IVT效率特性图确定设计方案。根据IVT功率流类型,建立装备IVT的整车键合图模型,并推导出该系统的状态方程。以MATLAB/Simulink为平台,建立整车仿真模型。仿真结果表明:在UDDS循环工况下,发动机始终工作于最优经济性转速;IVT顺时针环流效率小于逆时针环流效率;IVT顺时针环流循环功率大于逆时针环流循环功率。A design scheme of IVT is proposed to ensure that the transmission efficiency is greater than 40%and that the speed range is greater than 6.The condition of zero-crossing speed regulation of the single-loop system is given.with the power flow and efficiency characteristics of the IVT given.The design scheme is determined by the IVT efficiency map.According to the IVT power flow model,the bond graph model of the vehicle equipped with IVT is established and the state equation of the system is deduced.Taking MATLAB/Simulink as a platform to establish the simulation model of the vehicle.The simulation results show that throughout the UDDS driving cycle,the engine always works at the optimum economy speed,the efficiency of the IVT with clockwise power circulation is less than that of anticlockwise power circulation,the circulation power of the IVT with clockwise power circulation is greater than that of anticlockwise power circulation.

关 键 词：IVT 传动效率 调速范围 循环功率 

分 类 号：TH132[机械工程—机械制造及自动化]