摘要
选取某厦门港口码头54辆重型半挂牵引车(集装箱车)作为研究对象,使用车载NO_(x)分析仪,研究了不同排放标准车辆NO_(x)的排放情况及行驶工况、行驶车速、排气温度等对车辆行驶过程中NO_(x)排放浓度的影响。结果表明:国Ⅵ车辆排放的NO_(x)浓度明显低于国Ⅳ和国Ⅴ车辆。在不同行驶工况下,NO_(x)排放平均浓度从大到小依次为加速工况、减速工况、匀速工况、怠速工况。对车速而言,在车速小于35 m/s时,国Ⅳ和国Ⅵ标准车辆NO_(x)排放浓度随着车速增大而增大,在车速大于35 m/s以后,NO_(x)排放浓度呈现下降趋势,国Ⅴ标准车辆NO_(x)排放浓度随车速增大而增大,在研究范围内未出现拐点。
Fifty-four heavy-duty diesel vehicles from Xiamen port were selected for studying the emission of NO_(x)with different emission standards,as well as vehicle driving conditions,driving speeds and exhausts,using the on-line NO_(x)analyzer.The results showed that the NO_(x)emission concentration of nationalⅥstandards of China were significantly lower than that of nationalⅣandⅤstandards.Under different driving conditions,the average concentrations of NO_(x)emission followed the order:acceleration,deceleration,uniform speed,and idling conditions.When the vehicle speeds of vehicles was less than 35 m/s,the NO_(x)emission concentration from nationalⅣandⅥstandards increased with the increase of vehicle speeds.When it was greater than 35 m/s,the NO_(x)emission concentration showed a decreasing trend.Meanwhile the NO_(x)emission concentration from nationalⅤstandards increased with the increase of the vehicle speeds,and there is no turning point within the current range.
作者
黄厔
刘艳英
陈森阳
林宜玲
庄马展
Huang Zhi;Liu Yanying;Chen Senyang;Lin Yiling;Zhuang Mazhan(Xiamen Institue of Environmental Science,Xiamen 361021,China;Institute of Urban Environment,Chinese Academy of Sciences,Xiamen 361021,China)
出处
《环境科学与管理》
2025年第4期35-40,共6页
Environmental Science and Management
基金
厦门科技计划(3502Z20244ZD4011)。
