摘要
针对重型车依据DB11/965-2013标准在车载排放试验(PEMS)中的NO_x污染物排放.根据测量原理、测量方法和试验程序对NO_x建立了数学计算模型,并通过理论方法对模型中各种参数进行了相对不确定度分析,最终得出了NO_x排放不确定度评定结果.从不确定度的评定过程中可以看出,在试验时,应尽量保证车辆状况稳定,在日常保养中,应加强对排放分析系统的标定和维护,对流量计进行维护工作等.
Based on the experimental data of NOxpollutant emission in portable emission measurement test for heavy vehicle according to DB11/965-2013 standard,measuring principle,measuring method and test procedure of NOx,math calculating model was established. Analysis of relative uncertainty of various parameters in the model were conducted with theoretical methods. The results of NOxemission uncertainty evaluation is obtained. To improve the uncertainty evaluation,testing vehicle should be in stable work condition,calibration and maintenance of emission analysis system and flowmeter should be well done regularly.
作者
张岳秋
李梁
刘子建
于津涛
张凡
ZHANG Yue-qiu;LI Liang;LIE Zi-jian;YU Jin-tao;ZHANG Fan(The Motor Vehicle Emissions Management Center of Beijing,Beijing 100176,China;China Automotive Technology＆Research Center,Tianjin 300162,China)
出处
《车辆与动力技术》
2018年第2期36-40,共5页
Vehicle & Power Technology
关键词
重型车
车载排放试验(PEMS)
NOX排放
不确定度评定
heavy duty vehicle
portable emission measurement system （PEMS）
NOx emission
uncertainty evaluation
作者简介
张岳秋（1981-）,硕士,工程师
