重型柴油车NOx排放检测现状及方法
Detection status and detection methods of NOxemission for heavy-duty diesel vehicles
刘宗昊 1刘树成 1刘加昂 1苗壮2
作者信息
- 1. 山东省机动车排气污染监控中心,山东 济南 250102
- 2. 青岛无车承运服务中心有限公司,山东 青岛 266000
- 折叠
摘要
以山东省在用重型柴油车为研究对象,调研定期排放检验、遥感监测和远程监控在重型柴油车 NOx 排放监管中的应用现状,采用恒定转速法和自由加速法试验研究重型柴油车的 NOx 排放规律.调研结果表明:定期排放检验和遥感检测 2 种方法测得的车辆 NOx 排放与重型柴油车实际 NOx 排放情况不符,远程监控形式测得的 NOx 排放与实际情况相符.试验结果表明:恒定转速法和自由加速法测得的重型柴油车 NOx 体积分数能够真实反映重型柴油车 NOx 的排放规律,都可用于重型柴油车 NOx 排放的快速检测.
Abstract
Taking heavy-duty diesel vehicles in use in Shandong Province as the research object,this study investigated the application status of regular emission inspection,remote sensing monitoring,and remote monitoring in the regulation of NOxemissions from heavy-duty diesel vehicles.The constant speed method and free acceleration method are used to experimentally study the NOxemission characteristics of heavy-duty diesel vehicles.The results show that the NOxemissions measured by two methods,regular emission inspection and remote sensing detection,do not match the actual NOxemissions of heavy-duty diesel vehicles.The NOx emissions measured by remote monitoring are consistent with the actual situation.It is also show that the volume fraction of NOxmeasured by the constant speed method and the free acceleration method can truly get the emission characteristics of NOxfrom heavy-duty diesel vehicles,and both can be used for rapid detection of NOx emissions from heavy-duty diesel vehicles.
关键词
重型柴油车/NOx排放/检测方法Key words
heavy-duty diesel vehicle/NOxemission/detection method引用本文复制引用
基金项目
山东省重点研发计划项目(2019GGX103036)
出版年
2024
NETL
NSTL
万方数据