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Diesel Ultrafine/Fine Particle Emissions in Numbers:Statistical Modeling and Evaluation of Engine Operating Variables.
| 题名： | Diesel Ultrafine/Fine Particle Emissions in Numbers:Statistical Modeling and Evaluation of Engine Operating Variables. |
| 作者： | Y. Kamaria-Nakis; O. Gao; |
| 关键词： | diesel engines,exhaust emissions;vehicle air pollution, ultrafine emissions, statistical model, emissions, particulate matter, heavy duty vehicles, buses, diesel fuels, linear model; |
| 摘要： | This work aims to develop statistical models for ultrafine/fine particle number emission rates from a diesel bus, to evaluate the explanatory power of engine operating variables. Emissions were recorded by using on-board instrumentation in two types of real-world driving conditions: a freeway commuting route and a within-city-limits bus route, with stop and go due to intersections and bus stops. To reduce the risk of drawing spurious conclusions, three replications of the experiment were performed and linear models were estimated using the robust-to-outliers quantile regression method. The set of explanatory covariates examined includes engine speed, engine load percentage, fuel to air ratio, injection pressure, boost pressure and exhaust temperature; statistical models were corrected for variations in ambient temperature. / Title Note: Final rept. 01 Jan. 2009 - 31 Dec. 2009. / Supplementary Notes: Sponsored by University Transportation Research Center, Region 2, City College of New York, NY. and Department of Transportation, Washington, DC. Research & Innovative Technology Administration (RITA). / Availability Note: Order this product from NTIS by: phone at 1-800-553-NTIS (U.S. customers); (703)605-6000 (other countries); fax at (703)605-6900; and email at orders@ntis.gov. NTIS is located at 5301 Shawnee Road, Alexandria, VA, 22312, USA. / NTIS Prices: PC A05 / NTIS In-house Control Codes: dotfha;12091,1101 |
| 报告类型： | 科技报告 |
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