Statistical Evaluation of Driving Cycle with Slope Variability


Abstract


Recently, the scientific community has assessed evidence that exposure to outdoor air pollution causes lung cancer and increases the risk of bladder cancer. Because air pollution in urban areas is mainly caused by transportation, it is necessary to evaluate pollutant exhaust emissions from vehicles during their real-world use. Nevertheless, their evaluation and reduction is a key problem, especially in the cities, that account for more than 50% of world population.

A correct evaluation of pollutant emissions and fuel consumption by vehicles in real use and precisely geolocated in a road is an important activity and it is still open in the international scientific contexts. Several experimental campaigns were carried out with some cars instrumented for both the acquisition of kinematic data, polluting emissions in continuous, and GPS latitude, longitude and altitude data for the correct geolocalization and slope variation during a path.

In the context of qualitative and quantitative study of correlation between kinematic sequences/emission/geographical position, the aim of this paper is a statistical evaluation of the slope variability along streets during each journey performed by the instrumented vehicle. Therefore, through a multivariate statistical approach, this type of gradient analysis permits the correlation study of the emission profiles and consumption for a specific road position and the evaluation of  the influence on their behavior.

DOI Code: 10.1285/i20705948v9n4p610

Keywords: Driving cycle; emissions; fuel consumption; slope; urban environment

References


André, M., Joumard, R., Vidon, R., Tassel, P., Perret, P., “Real-world European driving cycles, for measuring pollutant emissions from high- and low-powered cars”, Atmos-pheric Environment 40(31): 5944–5953, 2006.

Carrese, S., Gemma, A., La Spada, S., “Impacts of Driving Behaviours, Slope and Vehi-cle Load Factor on Bus Fuel Consumption and Emissions: A Real Case Study in the City of Rome”, Procedia - Social and Behavioral Sciences Volume 87, 10 October 2013, Pages 211–221, SIDT Scientific Seminar 2012doi:10.1016/j.sbspro.2013.10.605.

Della Ragione L., Meccariello G. and Prati M. V., “Statistical Investigation of In Use Emissions and Fuel Consumption Measured by PEM on Different Gasoline Cars”, SAE Technical Paper 2013-01-1511, 2013, doi:10.4271/2013-01-1511.

Franco, V., Posada Sánchez, F., German, J., Mock, P., “Real-world exhaust emissions from modern diesel cars. A meta-analysis of PEMS emissions data from EU (Euro 6) and US (Tier 2 Bin 5/ULEV II) diesel passenger cars”, ICCT WHITE PAPER, 2014, http://www.theicct.org/sites/default/files/publications/ICCT_PEMS-study_diesel-cars_20141010.pdf.

May, J., Favre, C., Bosteels, D., “Emissions from Euro 3 to Euro 6 light-duty vehicles equipped with a range of emissions control technologies”, Internal Combustion En-gines: Performance, Fuel Economy and Emissions: IMechE, London, 2013.

Meccariello G., Della Ragione L., “Slope Effect in Emission Evaluation to Assess Real Pollutant Factors”, World Academy of Science, Engineering and Technology Interna-tional Journal of Chemical, Nuclear, Metallurgical and Materials Engineering Vol:8 No:10, 2014.

Prati, M.V., Costagliola, M.A., Tommasino, C., Della Ragione, L., Meccariello, G., “Road Grade Influence on the Exhaust Emissions of a Scooter Fuelled with Bioetha-nol/Gasoline Blends”, Transportation Research Procedia 3:790-799, 2014.

Sentoff, K., Aultman-Hall, L., Holmén, B., “Implications of driving style and road grade for accurate vehicle activity data and emissions estimates”, Transportation Research Part D: Transport and Environment 35:175-188, 2015.

Watson J.G., Chow J.C., X.L. Wang, S.D. Kohl, L.-W.A. Chen, V. Etyemezian (2012). Chapter 7 - Overview of Real-World Emission Characterization Methods, In: Kevin E. Percy, Editor(s), Developments in Environmental Science, Elsevier, 2012, Volume 11, Pages 145-170, ISSN 1474-8177, ISBN 9780080977607

Weiss, M., Bonnel, P., Hummel, R., Urbano, M., Colombo, R., Lanappe, G., Le Lijour, P., Sculati, M. (2011). Analyzing on-road emissions of light-duty vehicles with Porta-ble Emission Measurement Systems (PEMS). JRS scientific and Tecnical Reports, EUR 24697 EN - 2011, ISBN 978-92-79-19072-8.

Wood Eric, Evan Burton, Adam Duran, and Jeff Gonder, “Contribution of Road Grade to the Energy Use of Modern Automobiles Across Large Datasets of Real-World Drive Cycles”, NREL, SAE World Congress 2014, Detroit, Michigan April 8-10, 2014. (http://www.nrel.gov/publications/).

Wyatt, D., Li,H., Tate, J., “The impact of road grade on carbon dioxide (CO2) emission of a passenger vehicle in real-world driving”, Transportation Research Part D: Transport and Environment 32:160-170, 2014.


Full Text: pdf
کاغذ a4

Creative Commons License
This work is licensed under a Creative Commons Attribuzione - Non commerciale - Non opere derivate 3.0 Italia License.