摘要
通过对5辆测试车辆的车载排放测试、145万余条台架检测数据采集佛山市轻型汽油车动态运行与尾气排放数据,基于多种动态运行表征参数构建运行-排放关系,建立随行驶里程变化的排放劣化规律,探究动态运行与劣化水平对轻型汽油车气态污染物CO、HC、NO_X排放的影响。结果表明,相对于单一参数如平均速度V、瞬时速度v、加速度a及组合参数v-a,基于运行工况的运行-排放相关性较高,各污染物排放速率均随机动车比功率及瞬时速度的增大而升高;国零排放标准车辆的CO、HC、NO_X排放速率分别是国Ⅳ的284、20、641倍,且不同使用水平的排放情况均较高;轻型客车、货车CO、HC、NO_X排放浓度随累积行驶里程呈现"缓慢上升-快速增长-缓慢趋平"的劣化趋势。
The dynamic emission characteristics of CO,HC,NO_X,and the deterioration rules are analyzed from collected data of light-duty gasoline vehicles in Foshan,China by portable emission measurement and inspection and maintenance program（I/M）,to satisfactorily reflect the operating conditions and emission characteristics of dynamic traffic flow.Results show that the parameter＂operation mode＂is more reasonable to simulate dynamic vehicle emissions,with a clearly increasing trend of emission rates as vehicle specific power and instantaneous speed increase,comparing to other single-variable containing average speed,instantaneous speed,accelerate speed,and combination-variable.The emission rates of CO,HC,NOX of gasoline No.0 are 284,20,641 times of gasoline No.Ⅳ,respectively.Obvious deterioration of in-use light-duty gasoline vehicles emissions has shown accompanied by mileages.
作者
刘永红
林晓芳
黄玉婷
廖文苑
陈泳钊
LIU Yonghong1,2,3, LIN Xiaofang1,2,3, HUANG Yuting1,2,3, LIAO Wenyuan1,2,3, CHEN Yongzhao1,2,3(1. School of Engineering, Sun Yat-sen University, Guangzhou 510275, China; 2. Guangdong Provincial Key Laboratory of Intelligent Transportation System, Guangzhou 510006, China; 3. Guangdong Provincial Engineering Research Center for Traffic Environmental Monitoring and Control, Guangzhou 510275, Chin)
出处
《环境科学与技术》
CAS
CSCD
北大核心
2018年第2期83-90,共8页
Environmental Science & Technology
基金
国家重点研发计划(2016YFC0202005)
广东省自然科学基金(2016A030313297)
广州市科技计划项目(201704020053)
关键词
轻型汽油车
排放特征
排放速率
动态运行
劣化规律
运行模式
light-duty gasoline vehicle
emission characteristics
emission rate
dynamic operation
deterioration rate
operation mode
