不同挡位下中型自卸车对实际道路污染物排放影响研究  

Research on impact of medium-sized dump truck on actual road pollutant emissions in different gears

作　　者：黄金秋 赵朕 孙城 HUANG Jinqiu;ZHAO Zhen;SUN Cheng(CATARC Automotive Test Center(Changzhou)Co.,Ltd.,Changzhou 213000,Jiangsu,China)

机构地区：[1]中汽研汽车检验中心(常州)有限公司,江苏常州213000

出　　处：《农业装备与车辆工程》2024年第3期81-83,106,共4页Agricultural Equipment & Vehicle Engineering

摘　　要：为评估自卸车在不同挡位行驶时的污染物排放,采用便携式排放测试设备(PEMS)对一台国Ⅵ重型柴油车进行了2次实际道路排放测试,参考GB 17691-2018《重型柴油车污染物排放限值及测量方法(中国第六阶段)》进行了综合排放测试。结果表明,车辆行驶挡位影响发动机排温,进而影响NO_(X)排放,转速高的情况下NO_(X)排放更低。高挡位低转速情况下NO_(X)比排放为225.6 mg/(kW·h),低挡位高转速情况下NO_(X)比排放为73.2 mg//(kW·h),降低了67.6%;高挡位低转速情况下PN比排放为9.74×10^(10)个/(kW·h),低挡位高转速情况下PN比排放为8.57×10^(10)个/(kW·h),降低了12%。In order to evaluate the pollutant emission level of the dump truck under different gear driving conditions,two actual road emission tests were carried out on a China VI heavy-duty diesel vehicle using portable emission testing equipment(PEMS),and the comprehensive emission test was determined with reference to GB 17691-2018 Pollutant Emission Limits and Measurement Methods for Heavy-duty Diesel Vehicles(China Stage VI).The results showed that the gear level affected the exhaust temperature of the engine,thereby affecting the NO_(X) emissions,and the NO_(X) pollutants were lower at high speeds.The NO_(X) specific emission was 225.6 mg/(kW·h)at high gear and low speed,and 73.2 mg/(kW·h)at low gear and high speed,which was reduced by 67.6%.The PN ratio emission was 9.74×10^(10)#/(kW·h)at high gear and low speed and 8.57×10^(10)#/(kW·h)at low gear and high speed,which was reduced by 12%.

关 键 词：自卸车 综合排放测试 PEMS 

分 类 号：U467[机械工程—车辆工程]