商用车AMT换挡过程发动机控制策略  

Engine Control Strategy for AMT Shifting of Commercial Vehicle

作　　者：刘振杰[1] 李志伟[1] 王叶[1] 衣超[1] 韩宇石[1] LIU Zhen-jie LI Zhi-wei WANG Ye YI Chao HAN Yu-shi(Science and Technology on Vehicle Transmission Laboratory, China North Vehicle Research Institute, Beijing 100072, China)

机构地区：[1]中国北方车辆研究所车辆传动重点实验室,北京100072

出　　处：《车辆与动力技术》2017年第1期25-28,共4页Vehicle & Power Technology

摘　　要：为了提高商用车AMT换挡舒适性,根据离合器工作特性,将换挡过程分为5个阶段,制定了每个阶段发动机目标转速和发动机控制模式.基于SAEJ1939通信协议,通过发送控制模式指令实现了AMT升挡过程发动机限速限扭控制策略和降挡过程发动机调速控制策略,并在南京依维柯AMT样车上进行了试验验证,结果表明:所提出的发动机控制策略能够很好地控制换挡过程发动机转速,达到发动机转速与输入轴转速同步的目的,提高了换挡舒适性.In order to improve the shift quality of the automatic mechanical transmission （AMT） , the shifting process was divided into five stages and the engine target speed and control strategy of each stage were formulated based on the characteristics of clutch work. Based on SAEJ1939 protocol, engine speed and speed limit torque control by sending engine control mode were implemented. The results of test on NJ2046 vehicle showed that the engine control strategy realized effectively the engine control process, and the AMT shifting comfort was improved.

关 键 词：商用车 发动机控制 AMT 换挡 

分 类 号：U270.11[机械工程—车辆工程]