汽车无级变速器功耗特性与节能潜力研究  

Study on the Power Consumption Characteristic and Energy Conservation Potential of Continuously Variable Transmission

作　　者：张鹏飞[1] 张伯俊[1] 董小伟[2] 郝允志[3] 

机构地区：[1]天津职业技术师范大学汽车与交通学院,天津300222 [2]天津职业技术师范学院机械工程学院,天津300222 [3]西南大学智能交通传动与控制工程实验室,重庆400715

出　　处：《机械传动》2016年第7期47-52,共6页Journal of Mechanical Transmission

摘　　要：根据无级变速器功耗与效率的影响因素,对比分析发动机和电机的工作特性,提出利用小功率电封闭实验台测量无级变速器功耗和效率的方法。试验结果表明,转矩损失主要取决于速比和系统压力,传动效率主要取决于速比和主动轮转矩,主动轮转速对转矩损失和传动效率的影响可以忽略;速比小于1时,转矩损失显著增大,传动效率快速下降;速比大于1时,转矩损失和传动效率基本不变。分析传动系统整体效率最优控制、夹紧力滑移率控制和采用电动油泵等3种方法的节能潜力,仿真结果表明,3种方法分别使经济性提高3.2%、5.8%和2.4%,同时采用3种方法可使经济性提高9.8%,为选择节能途径和评价节能效果提供参考。The influencing factors on continuously variable transmission（ CVT） power consumption and efficiency are studied. The external characteristic compare of engine and motor is analyzed. A method of measuring CVT power consumption and efficiency is presented by using a low power electric closed test bed. The experiments results show that,the torque loss mainly depended on speed ratio and system pressure,and the efficiency mainly depended on speed ratio and primary input torque. When the ratio is less than 1,the torque loss increased significantly and the efficiency declined rapidly. When the ratio is larger than 1,the torque loss and efficiency are almost constants. Overall efficiency optimization control strategy,clamping force slip rate control algorithm and new electric oil pump are studied to determine the energy conservation potentials. The simulation results show that the three methods could improve economical efficiency by 3. 2%,5. 8% and 2. 4% individually. By adopting all the three methods,the economical efficiency improved 9. 8%. So the references for selecting and evaluating power conservation methods are provided.

关 键 词：汽车 无级变速器 功耗 效率 

分 类 号：U463.212[机械工程—车辆工程]