详情

原文传递 “On-Road Remote Sensing of Automobile Emissions in the Chicago Area: Year 3”

题名：	“On-Road Remote Sensing of Automobile Emissions in the Chicago Area: Year 3”
作者：	Sajal S. Pokharel, Gary A. Bishop and Donald II. Stedman
关键词：	Motor Vehicle Emissions Remote Sensor Carbon Monoxide Nitrogen Oxides National Emissions Inventory Environmental Protection Agency Remote Sensing Study Hydrocarbons Ozone Atmospheric Pollutants Air Quality Standards
摘要：	The University of Denver has completed the first 3 years of a 5-year remote sensing study in the Chicago area. 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 (C02) in motor vehicle exhaust. From these ratios, we calculate the percent concentrations of CO, CO2, HC and NO in the exhaust that would be observed by 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. The mean CO, HC and NO emissions for the fleet measured in the third year of this study were 0.35%, 179 ppm and 378 ppm, respectively. These values were amongst the lowest we have observed for a statistically significant fleet, and are considerably lower than those for fleets previously measured in the Chicago area. Vehicle emissions as a function of vehicle specific power revealed that NO emissions show a positive dependence on specific power, while HC emissions show a negative dependence on specific power - the expected trends. Carbon monoxide emissions show a slight negative dependence on specific powers in the range from -5 to 30 kW/tonne.
报告类型：	科技报告