AT电控系统电磁阀组状态实时监测方案设计  

Design on the Real-time Monitor System of the Electromagnetic Valve Group of the Automatic Transmission Electric Control System

作　　者：王景霞[1] 韩宇石[1] 李志伟[1] 衣超[1] 

机构地区：[1]中国北方车辆研究所,北京100072

出　　处：《车辆与动力技术》2015年第3期51-54,共4页Vehicle & Power Technology

摘　　要：为了解决AT自动变速箱挂双挡或多挡的故障问题,设计了AT电控系统电磁阀组工作状态的监测方案.该方案通过对电磁阀工作电流的采集、处理,实现了电磁阀组状态的实时监测.当AT电控系统TCU检测到不应导通的电磁阀电流大于209 m A时,即保护点电压为418 m V时,AT电控系统立即切断所有输出驱动信号,使自动变速箱处于空挡状态.通过台架试验表明该方案能够对自动变速箱进行挡位保护,防止多个电磁阀同时导通,解决了由于电缆短路或电磁阀故障等原因引起的变速箱挂双挡的问题.In order to solve the fault problems of the Automatic Transmission gearbox with double gear state, a method employing realtime monitor system for the electromagnetic valve group is proposed. The monitor function is realized by the current collection and regulation of the electromagnetic valve group. When the current value of the electromagnetic valve group is more than 209mA and the protection point voltage is 418mV, the electric control system of the Automatic Transmission will cut the circuit of all drive signals off, and transit the method can effectively protect the and solve the problem of the electromagnetic valve faults. gearbox to the neutral gear state. The bench experiment shows that the gearbox from multiple electromagnetic valves working at the same time, double gear state resulted from the cable short-circuit and the

关 键 词：自动变速箱 AT电控系统 电磁阀组 

分 类 号：U463.212.33[机械工程—车辆工程]