摘要
针对D4114B型柴油机排放尾气中的CO2气体开展测量研究,计算分析气体的体积分数以及温度。文中以可调谐半导体激光器吸收光谱(Tunable Diode Laser Absorption Spectroscopy,TDLAS)技术原理为基础,利用MATLAB中SIMULINK库中的各个模块,模拟尾气测量的实际过程。仿真结果显示,在模拟柴油机排放环境下,待测量气体CO2的温度仿真相对误差为0.03%。利用船用D4114B型柴油机进行验证实验,在其排气管上增添可视化窗口并安装相应测试系统,利用以半导体为工作介质的可调谐激光器作为激光光源,开展尾气排放中CO2气体温度的在线测试研究,测试相对误差小于4%。由上述研究结果可知,本文中利用SIMULINK搭建的模型所测得的温度值与实际柴油机尾气排放过程中的温度相差较小,因此,其仿真结果能够对柴油机排气测温提供一定的参考。
To measure CO2 gas in the exhaust of the D4114B diesel engine,the volume fraction and temperature of the gas were studied and analyzed.Based on the principles of Tunable Diode Laser Absorption Spectroscopy(TDLAS),the process of exhaust gas measurement was simulated using various modules in the SIMULINK library of MATLAB.Through simulation,the relative temperature error of the CO2 was 0.03%.The simulation results were verified with a D4114B marine diesel engine.A visualization window was added to its exhaust pipe and a corresponding test system was installed.A tunable laser with a semiconductor as a working medium was used as the laser light source to carry out on-line tests of the CO2 temperature in the gas emissions.In this study,the relative error of the test was less than 4.0%.It can be seen from the results that the different between the temperature measured by the model built with a SIMULINK and that of the actual diesel exhaust emission is slight.Therefore,the simulation result can be used as a reference for the diesel engine exhaust temperature measurement.
作者
袁志国
马修真
刘晓楠
穆彦龙
杨晓涛
YUAN Zhi-guo;MA Xiu-zhen;LIU Xiao-nan;MU Yan-long;YANG Xiao-tao(College of Power and Energy Engineering, Harbin Engineering University, Harbin 150001, China)
出处
《中国光学》
EI
CAS
CSCD
北大核心
2020年第2期281-289,共9页
Chinese Optics
基金
国家自然科学基金资助项目(No.61405046,No.51709059)
黑龙江自然科学基金资助项目(No.51305089)
船用低速发动机项目Ⅰ期(No.CDGC01-KT03-BG-011)。
关键词
SIMULINK仿真
可调谐激光吸收光谱
柴油机尾气
排气测量
SIMULINK simulation
tunable laser absorption spectroscopy
diesel engine emission
exhaust temperature measurement
