电控喷油器流量特性及动态响应测试系统研究  

Flow characteristics and dynamic response measuring system for electronic controlled injectors

作　　者：唐超 张振东[1] 丁力 尹丛勃[1] 

机构地区：[1]上海理工大学机械工程学院,上海200093 [2]上汽大众汽车有限公司,上海201805

出　　处：《机电工程》2018年第3期274-277,共4页Journal of Mechanical & Electrical Engineering

基　　金：国家自然科学基金资助项目(51275309)

摘　　要：针对当前喷油器检测的过程繁琐及人工读取结果参数误差大、精度低的问题,对高阻电控喷油器的工作原理进行了研究,分析了其流量特性及动态响应的检测意义,提出了一种基于ARM Cortex-M4内核单片机以及LabVIEW软件的电控喷油器流量特性及动态响应检测系统;系统以ARM单片机为控制核心,控制喷油器运作并采集相关信号,使用LabVIEW作为上位机显示结果曲线,后台结合Matlab script脚本对结果曲线数据进行了滤波及计算,帮助测试人员得出了精确结果。试验结果表明:该测试系统可以对电控喷油器的流量特性及动态响应进行高效率的自动检测,流量特性的测量误差小于0.02 mg,动态特性的测量误差小于7.1 us。Aiming at measuring the flow characteristics and dynamic response for electronic controlled injectors with high accuracy and efficiency,a new kind of measuring system was designed based on the working principle of high resistance electronic controlled injectors. A microchip was used to control the operation of injector and get signal. LabVIEW was used as the upper computer to display curves. Combined with the Matlab script,the data was fileted and calculated to help testers obtain accurate results. The results indicate that the measurement error of the flow characteristics is less than 0. 02 mg and measurement error of dynamic response is less than 7. 1 us. The system can test the flow characteristic and dynamic response of the injector automatically with high accuracy.

关 键 词：电控喷油器 流量特性 动态响应 测试系统 LABVIEW 单片机 

分 类 号：TH814[机械工程—仪器科学与技术] U464.236[机械工程—精密仪器及机械]