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On-Road Remote Sensing of Automobile Emissions in the Denver Area: Year 5, January 2005.
| 题名： | On-Road Remote Sensing of Automobile Emissions in the Denver Area: Year 5, January 2005. |
| 作者： | BISHOP, G. A.; BURGARD, D. A.; STEDMAN, D. H. |
| 关键词： | AUTOMOBILES; EXHAUST EMISSIONS; REMOTE SENSING |
| 摘要： | The University of Denver conducted a three-day remote sensing study in the Denver, CO area in the winter of 2005. The remote sensor used in this study is capable of measuring the ratios of CO, HC, and NO to 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 which 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. This was the fifth year of a multi-year continuing study to characterize motor vehicle emissions and deterioration in the Denver. The 2005 data show the least dependence on VSP of any of the previous data sets. CO, HC and NO emissions are at low levels across the entire VSP range. Using VSP, the emissions of the vehicle fleet measured in 2005 were adjusted to match the vehicle driving patterns of the fleet measured in 1999. All of the emissions continue to trend downward even at higher loads. This trend is more difficult to discern in the model year adjustments since the fleet has aged 7 years in the process. The increases observed in this analysis are just slightly larger than the estimated errors and point out that emission deterioration in the fleet is slowing considerably. |
| 报告类型： | 科技报告 |
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