EMISSIONS FROM IN-USE MOTOR VEHICLES IN LOS-ANGELES - A PILOT-STUDY OF REMOTE-SENSING AND THE INSPECTION AND MAINTENANCE PROGRAM
EMISSIONS FROM IN-USE MOTOR VEHICLES IN LOS-ANGELES - A PILOT-STUDY OF REMOTE-SENSING AND THE INSPECTION AND MAINTENANCE PROGRAM
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DOI：
10.1080/10473289.1990.10466754
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发表时间：
1990-08-01
影响因子：
2.7
通讯作者：
GUENTHER, PL
中科院分区：
文献类型：
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作者：
LAWSON, DR;GROBLICKI, PJ;GUENTHER, PL
作为旨在了解洛杉矶一氧化碳污染持续升高的原因的重大实地研究的一部分，我们开展了一个项目来了解使用中车辆的排放情况。在本实验中，我们评估了遥感仪器的准确性，该遥感仪器旨在测量道路上行驶的车辆的二氧化碳浓度。结果表明，远程传感器的准确度在直接测量的尾气管值的百分之十以内。我们对 60 辆车辆进行了路边检查，并证明远程传感器可以用作识别高共排放车辆的有效监控工具。我们还将路边数据集与同一车辆每两年一次的烟雾检查（I/M）测试进行比较，发现高排放源的一氧化碳和废气碳氢化合物含量远高于车辆接受例行检查时的水平。此外，对于该数据集中的高排放车辆，距离两年一次的烟雾检查的时间长短对车辆在路边检查中的排放影响不大。
As part of a major field study to understand the causes of persistent, elevated carbon monoxide pollution episodes in Los Angeles, we performed a project to understand the emissions of vehicles in use. In this experiment, we assessed the accuracy of a remote sensing instrument designed to measure CO concentrations from vehicles as they were driven on the road. The remote sensor was shown to be accurate within ten percent of the directly measured tailpipe value. We performed a roadside inspection on 60 vehicles and demonstrated that the remote sensor could be used as an effective surveillance tool to identify high Co-emitting vehicles. We also compared the roadside data set to the biennial Smog Check (I/M) tests for the same vehicles, and observed that carbon monoxide and exhaust hydrocarbons from high emitters were much higher than when the vehicles received their routine inspection. Furthermore, for the high-emitting vehicles in this data set, the length of time since the biennial Smog Check had little influence on the cars'' emissions in the roadside inspection.