基于远程监测的典型重型车活动与排放特征研究

Research on Activity and Emission Characteristics of Typical Heavy Vehicles Based on Remote Monitoring

重型柴油车已成为影响大气环境污染物排放的重要来源。选择市区、市郊和高速运行的车辆作为研究目标,利用远程监测技术获取车辆实际道路条件下的活动特征,建立车辆实际道路排放测试的速度区间比例库并开展实车排放测试。统计结果显示,运行于不同环境的车辆活动特征差别较大,且各类污染物在中速及以下区间,随着车速升高污染物排放水平呈下降趋势;高速段NOx和PM排放水平略有回升。

Heavy-duty diesel vehicles have become an important source of air pollutants.Selected urban,suburban and high-speed vehicles as targets,obtained the characteristics of vehicle activities under actual road conditions by remote monitoring technology,established the speed range proportion library of vehicle actual road emission test and carried out emission test.The result shows that the activity characteristics of vehicles operating in different environments are quite different,and the emission level of various pollutants shows a downward trend with the increase of vehicle speed in the range of medium speed and below.In addition,the level of NOx and PM emissions in the high-speed section rose slightly.