AMT换挡过程的协调控制策略研究  

Research of Coordinated Control Strategy for AMT Gearshift Process

作　　者：范珊珊 孙文军 聂幸福 FAN Shanshan;SUN Wenjun;NIE Xingfu(Shaanxi FAST Auto Drive Engineering Research Institute,Shaanxi Xi'an 710119)

机构地区：[1]陕西法士特汽车传动研究院,陕西西安710119

出　　处：《汽车实用技术》2021年第14期65-68,共4页Automobile Applied Technology

摘　　要：为了改善电控机械式自动变速器(AMT)的换挡品质,换挡时变速器通过CAN总线暂时接管发动机控制功能,根据发动机控制方式将换挡过程分为三个阶段,分别为降扭、同步和还扭,以此实现换挡过程AMT与发动机、离合器的协调控制。该方法在装有WP12.375E4发动机,16速AMT,SACHSSAE1#离合器的车辆上进行试验验证,结果表明,该方法有利于缩短换挡时间,提高换挡舒适性和动力性,为AMT换挡过程控制提供参考。In order to improve the shift quality of automatic mechanical transmission,the transmission control unit controls the engine instead of the ECU when shifting.According to engine control mode,gearshift process is split into 3 steps,ramp down control,speed control and ramp up control.In this way,the transmission,engine and clutch are coordinately controlled.The test result on a truck with WP12.375 E4 engine,16 speed AMT and SACHS SAE1#clutch shows that,this control method is conducive to shorten shift time,improve shift comfort and performance,providing references for ATM control system.

关 键 词：电控机械式自动变速器 发动机 超越控制 转速控制 扭矩限制 

分 类 号：U464[机械工程—车辆工程]