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原文传递 “ On-Road Remote Sensing of Automobile Emissions in the Phoenix Area: Year 2 ”

题名：	“ On-Road Remote Sensing of Automobile Emissions in the Phoenix Area: Year 2 ”
作者：	Sajal S. Pokharel, Gary A. Bishop and Donald H. Stedman
关键词：	Environmental Protection Agency Motor Vehicle Emissions Remote Sensing Study Remote Sensor Hydrocarbons Carbon Monoxide Ozone Nitrogen Oxides Atmospheric Pollutants National Emissions Inventory Air Quality Standards
摘要：	The University of Denver conducted a five-day remote sensing study in the Phoenix, AZ area in the fall of 1999. The remote sensor used in this study is capable of measuring the ratios of carbon monoxide (CO), hydrocarbons (HC) and nitrogen oxides (NO) to carbon dioxide (CO2) in motor vehicle exhaust. From these ratios, we calculate mass emissions per kg (or gallon) of fuel and the percent concentrations of CO, CO2, HC and NO in motor vehicle exhaust that would be observed by a tailpipe probe, corrected for water and any excess oxygen not involved in combustion. The system used in this study was also configured to determine the speed and acceleration of the vehicle, and was accompanied by a video system to record the license plate of the vehicle. Five days of fieldwork (November 15-19, 1999) were conducted on the uphill exit ramp from Hwy 202/Sky Harbor Blvd. Westbound to Hwy 143 Southbound in Phoenix, AZ. A database was compiled containing 18,894 records for which the State of Arizona provided make and model year information. All of these records contained valid measurements for at least CO and CO2 and 18,520 contained measurements for HC and NO. The mean CO, HC and NO were determined to be 0.31%, 0.014%, and 0.057%, respectively. The fleet emissions measured in this study exhibit a gamma distribution, with the dirtiest 10% of the fleet responsible for 78%, 79%, and 49% of the CO, HC, and NO emissions, respectively.
报告类型：	科技报告