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Investigation of Rover's Capabilities to Accurately Measure the In-Use Activity and Emissions of Late-Model Diesel and Gasoline Trucks.
| 题名： | Investigation of Rover's Capabilities to Accurately Measure the In-Use Activity and Emissions of Late-Model Diesel and Gasoline Trucks. |
| 作者： | Whitney, K. A. |
| 关键词： | Gasoline Truck, Late-Model Diesel, Rover projects, Investigation, Emissions, Analytical methods, Vehicle evaluations |
| 摘要： | Current in-use emissions are typically estimated based on laboratory testing because on-road test methods are cumbersome and costly. However, EPA has developed an on-board emissions measurement system, called "ROVER", in an attempt to provide a relatively simple and inexpensive means of determining in-use vehicle exhaust emissions on the road. The objective of the project was to provide EPA with an independent determination of how well ROVER measures in-use vehicle exhaust emissions, and how those emissions relate to current exhaust emissions standards. ROVER evaluations utilized four diesel and four gasoline light heavy-duty trucks, and included: (1) Collecting simultaneous exhaust emission and vehicle activity data from in-use vehicles on a chassis dynamometer following CFR procedures. ROVER emission measurements were compared to those using CFR-specified analytical methods for correlation purposes; (2) Simulating two specified driving cycles on a test track to correlate ROVER data collected on the road and in the laboratory; (3) Field testing ROVER on metropolitan San Antonio roadways over a sufficient period of time and range of driving conditions to judge ROVER durability and data quality. In addition, the project evaluated the level of effort necessary to install, calibrate, and maintain ROVER during vehicle evaluations, and identified areas where ROVER could be improved. |
| 报告类型： | 科技报告 |
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