Title: Characterising emissions from private passenger vehicles using engine operating patterns

Authors: Philip H. Goyns, Enver Doruk Ozdemir

Addresses: Department of Geography, Environmental Management and Energy Studies, University of Johannesburg, P.O. Box 524, Auckland Park 2006, Johannesburg, Republic of South Africa. ' Institute of Energy Economics and the Rational Use of Energy, University of Stuttgart, Hessbruehlstrasse 49a 70565 Stuttgart, Germany

Abstract: A method to simulate emissions factors using frequency distribution plots of engine speed and engine load is proposed. The distribution plots and corresponding emissions factors were developed from speed time series| of real-world driving cycles and physical properties of a range of private passenger vehicles tested at the EMPA. Emissions factors were estimated for a set of simultaneously measured frequency distribution plots and driving cycles using the proposed method and a method developed by De Haan and Keller (2004b) respectively. CO₂ was between 16% and 68% higher for the proposed method however there was no significant difference for other emissions.

Keywords: emissions modelling; real-world emissions; driving cycles; engine operation; frequency distribution; passenger vehicles; private vehicles; simulation; vehicle emissions; air pollution; engine speed; engine load; CO2 emissions; carbon emissions; carbon dioxide.

DOI: 10.1504/IJEE.2011.037875

International Journal of Environmental Engineering, 2011 Vol.3 No.1, pp.83 - 99

Published online: 25 Apr 2015 *

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