高压共轨柴油机喷油器电磁阀故障诊断系统设计  

Diagnose System Design of the Solenoid Valve for High Pressure Common Rail Diesel Engine

作　　者：徐权奎[1] 祝轲卿[1] 陈自强[1] 杨林[1] 

机构地区：[1]上海交通大学汽车电子技术研究所,上海200030

出　　处：《内燃机工程》2007年第4期69-72,共4页Chinese Internal Combustion Engine Engineering

摘　　要：根据电磁阀驱动回路仿真及试验,得出了高压共轨柴油机喷油器电磁阀在正常工作时以及短路、断路等各种故障状态时的驱动电流特性。根据对这些情况下驱动电流特征的对比,采用软件与硬件相结合的方法,设计了高压共轨柴油机喷油器电磁阀实时故障检测系统。该系统能够检测电磁阀的不同故障并且能在电磁阀故障时实现ECU的自保护功能。试验证明,该方法是一种实用而且快速的电磁阀故障检测方法。According to the simulation results and experiments, the characteristics of driving current for solenoid valve, both on normal state and various fault states, were induced in this paper. A fault detecting and driving circuit for the solenoid valve were designed based on these studies. At the same time, the way to diagnose the various fault state in real time was also given out. Experiments show that this method is an easy and quick way to diagnose the faults of solenoid valve.

关 键 词：内燃机 故障诊断 高压共轨 柴油机 电磁阀 仿真 

分 类 号：TK421[动力工程及工程热物理—动力机械及工程]