湿式双离合器式自动变速器降挡控制  

Down-shift Control Technology for Wet Dual Clutch Transmission

作　　者：徐春华[1] 王印束[2] 

机构地区：[1]郑州华信学院,郑州451150 [2]吉林大学汽车动态模拟国家重点实验室,长春130022

出　　处：《机械设计与制造》2012年第8期167-169,共3页Machinery Design & Manufacture

基　　金："863"国家高技术研究发展计划项目(2006AA110109)

摘　　要：针对湿式双离合器式自动变速器的换挡控制问题,在分析了自动变速器换挡品质评价指标的基础上,提出了双离合器式自动变速器的降挡控制策略,开发了双离合器式自动变速器的电控系统,编写了控制程序。以2挡降1挡为例,并分别在不同油门开度下进行了正扭矩降挡和负扭矩降挡实车试验,取得了良好换挡品质。通过试验验证了控制策略的有效性。试验结果表明,车辆在换挡过程中车速变化平稳,油温变化较小,该控制策略能够满足汽车降挡过程的平顺性和快捷性要求,使车辆具有良好的换挡品质。In order to solve the problems existed in gearshift with wet dual clutch transmission,the down-shift control strategy was proposed on the basis of analyzing on gear shift quality evaluation.And then the transmission control system is developed,as well as the control program is compiled.Taking down-shift from 2 to 1 for an example,positive torque and negative torque down-shifting control tests were carried out under different throttle positions and ideal shifting quality was achieved.it verified the validity of the control strategy.The result indicated that the speed of vehicle changed gentlely without distinct impact,and the oil temperature hardly changed,which can meet the requirement of the vehicle for ride and speed in shifting control and better shifting quality is obtained with the vehicle.

关 键 词：双离合器式自动变速器 湿式离合器 换挡 换挡品质 降挡控制 

分 类 号：TH16[机械工程—机械制造及自动化]