可实现高扭矩传递的车用功率分流式无级变速器的设计研究  

High torque application research on power split continuously variable transmission

作　　者：韩冬[1] 黄宏成[1] 褚旭阳[2] Hanni Lei-Reuter 

机构地区：[1]上海交通大学汽车工程研究院,上海200240 [2]哈尔滨工业大学机电工程学院,哈尔滨150001 [3]德国汽车技术与项目合作中心

出　　处：《机械设计与制造》2008年第10期109-110,共2页Machinery Design & Manufacture

基　　金：国家自然科学基金资助(59935110)

摘　　要：无级变速元件的承载能力一直是限制其应用领域的主要瓶颈,利用重新设计的功率分流机构和液压系统,减少无级变速元件载荷,速比变化范围大幅拓宽,提高低速扭矩表现,以实现500Nm以上的高扭矩传递能力,仿真结果表明改进的定速比传动机构、行星齿轮机构及其控制策略实现了操控性和平顺性要求。Power split CVT is a promising concept for automotive application in the future. Theoretically,it can offer a torque limit up to 500 Nm as well as total ratio spread between 6 and 7. The limitation for torque transfer capability can be raised,as the power flow through variator decreased. The system included variator and planetary gear set,which featured a power flow as following, the imput shaft transfer the power to sun gear and driving pulley. Thus a power split formed and Can realize variable possibilities.On the hydraulic concept,a double piston principle was applied for an advanced clamping system,which can provide sound privilege in fuel consumption. Control strategy was developed forthe CVT structure to achieve a more comfortable drivability and smoothness. Then computer simulation was carried out to show the result of optimization.

关 键 词：无级变速器 功率分流 高扭矩传递 

分 类 号：TH132[机械工程—机械制造及自动化] U463[机械工程—车辆工程]