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重型柴油车NOx排放检测现状及方法

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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.
Detection status and detection methods of NOxemission for heavy-duty diesel vehicles
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.

heavy-duty diesel vehicleNOxemissiondetection method

刘宗昊、刘树成、刘加昂、苗壮

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山东省机动车排气污染监控中心,山东 济南 250102

青岛无车承运服务中心有限公司,山东 青岛 266000

重型柴油车 NOx排放 检测方法

山东省重点研发计划项目

2019GGX103036

2024

内燃机与动力装置
山东省内燃机研究所 潍柴控股集团有限公司

内燃机与动力装置

影响因子:0.192
ISSN:1673-6397
年,卷(期):2024.41(1)
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