天然气发动机燃气喷射部件总成自动测试平台设计

宋君花，宋元，杨萍

上海东海职业技术学院机电学院，上海  200241

摘要：为自动检测天然气发动机燃气喷射部件总成的气密性，开发燃气喷射部件总成自动测试平台。确定测试平台的主要功能和测试参数；完成包括电源电路、喷嘴驱动电路、通信电路、信号采集电路在内的硬件采集板电路模块设计；基于LabVIEW，开发平台的软件系统，采用多线程、C＋＋混合编程的方法设计监测界面，并在某燃气喷射部件生产车间进行实际应用验证。实际应用结果表明：自动测试平台能够有效测试多个不同喷嘴数的燃气喷射部件总成的气密性，可以快速、直观地显示测试过程，实时采集喷嘴测试中的信息，准确判断各个喷嘴及传感器的工作状态，具有良好的实用性及可靠性，可提高燃气部件总成的生产效率，降低生产成本。

关键词：自动测试平台；燃气喷射部件；LabVIEW；多线程

Design of an automatic testing platform for natural gas engine fuel injection component assembly

SONG Junhua, SONG Yuan, YANG Ping

School of Mechanical and Electrical Engineering，Shanghai Donghai Vocational & Technical College, Shanghai 200241, China

Abstract: To automatically detect the sealing performance of gas injection component assembly in natural gas engine, an automatic testing platform for gas injection component assembly has been developed. The main functions and testing parameters of the testing platform are clarified, the hardware acquisition board circuit modules, including power supply circuit, nozzle drive circuit, communication circuit, and signal acquisition circuit is designed, the software system of the testing platform is developed based on LabVIEW，the monitoring interface is designed using a multi-threading and C++ mixed programming methods, and practical application verification is carried out in a gas injection component production workshop. The actual application results show that the automatic testing platform can effectively test the sealing performance of multiple gas injection components with different numbers of nozzles, quickly and intuitively display the testing process, real-time collect information during nozzle testing, and judge the working status of each nozzle and sensor. The automatic testing platform has excellent practicality and reliability, improves the production efficiency of gas component assemblies, and reduces the product costs.

Keywords: automatic testing platform; gas injection component; LabVIEW; multithread