Title: Fleet-averaged engine matrices for Australian vehicles and their use in fuel economy modelling

Authors: T.J. Gibson, R.W. Bilger

Addresses: Department of Mechanical Engineering, The University of Sydney, NSW 2006, Australia. ' Department of Mechanical Engineering, The University of Sydney, NSW 2006, Australia

Abstract: Data obtained during standard chassis dynamometer testing at the University of Sydney is used to produce an engine fuel consumption matrix for the test vehicle. The matrix includes the effect of engine operational transients and is presented in a generalised engine parameter form which allows comparisons between dissimilar vehicles. A sufficient number of tests have been carried out to construct a fleet-averaged engine matrix for in-use Australian vehicles. A model is described which uses this matrix to predict the effect of variations in vehicle parameters and traffic flow patterns on the fuel consumption of a motor vehicle on the road or on the dynamometer.

Keywords: dynamometer testing; engine operational transients; fleet-averaged engine matrix; fuel consumption matrix; fuel economy modelling; Austalia; vehicle design.

DOI: 10.1504/IJVD.1987.061195

International Journal of Vehicle Design, 1987 Vol.8 No.1, pp.115 - 144

Published online: 25 May 2014 *

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