汽车发动机尾气排放污染分析方法设计与模拟  

Design and simulation of analysis methods for exhaust gas emission parameters of automobile engine

作　　者：李强[1] LI Qiang(School of Intelligent Manufacturing,Jianghan University,Wuhan 430056,Hubei,China)

机构地区：[1]江汉大学智能制造学院,湖北武汉430056

出　　处：《沈阳工业大学学报》2024年第4期416-421,共6页Journal of Shenyang University of Technology

基　　金：国家重点研发计划项目(2019YFB1600800)。

摘　　要：为提高汽车发动机尾气排放污染参数控制的准确性,采用跟车尾气测试系统对汽车发动机尾气排放因子进行计算及扩散模拟分析。利用路试直接采样法测试尾气排放污染参数,并对其进行精准计算,再利用点源高斯扩散模型进行模拟分析,并采用CALINE4模式对点源高斯模型进行修正,以获得精准的分析结果。分析结果表明,所提方法对排放因子的计算结果与实际结果误差较小,维持在0.5 g/km以内,且对排放因子扩散分析符合实际情况,具有较高的准确性,有利于城市交通污染控制及大气环境质量的提升。In order to improve the accuracy of vehicle engine exhaust emission pollution parameter control,the car-following exhaust gas test system was used to calculate the vehicle engine exhaust emission factor and simulate the diffusion process.According to the road test direct sampling method,the exhaust emission pollution parameters were tested and calculated accurately,then the point source Gaussian diffusion model was used for simulation analysis,and the CALINE4 mode was adopted to modify the point source Gaussian model for accurate analysis results.The analysis results show that the error between the calculated results of as-proposed method and the actual results of the emission factors is small and kept lower than 0.5 g/km,and the diffusion analysis of the emission factors conforms to the actual situation with high accuracy,indicating that it is conducive to the control of urban traffic pollution and the improvement of atmospheric environment quality.

关 键 词：汽车发动机 尾气排放 扩散分析 跟车尾气测试 尾气排放因子 点源高斯扩散模型 CALINE4模式 

分 类 号：TP399[自动化与计算机技术—计算机应用技术]