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Section I

Aerodynamic Drag and Rolling Resistance of Three-Wheelers

Authors:

J. A. K. S. Jayasinghe ,

University of Moratuwa, LK
About J. A. K. S.

Senior Lecturer up to 2001 and thereafter as Professor in Electronic & Telecommunication Engineering up to date.

Eng. Prof., BSc (Eng.), MEE, PhD, MIE (Sri Lanka) graduated from the University of Moratuwa(UOM) Sri Lanka in 1984. He obtained his MEE in Electronics Engineering in 1987 from Netherland University Foundation for International Corporation and PhD from University of Twente in 1991.

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B. S. Samarasiri,

University of Moratuwa, LK
About B. S.

Director of the Engineering Design Centre (EDC)

Eng., BSc (Eng.), CEng, MIE (Sri Lanka) graduated from the University of Sri Lanka Katubedda Campus in 1977 with a first class honours in the field of Electronic and Telecommunication engineering. He commenced his academic career in 1978 at the department of Electronic and Telecommunication engineering of the University of Moratuwa. He persued his postgraduate training in the field of Bio-Medical and Systems Engineering at the University of New South Wales - Australia,

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G. M. A. I. Rajakaruna

University of Moratuwa, LK
About G. M. A. I.

Presently Design Engineer, Engineering Design Centre,

B.Sc (Eng.), Hons,

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Abstract

Three-wheelers are popular in Sri Lankan roads as a convenient mode of transportation. Presently there are about 500,000 registered three-wheelers. The range of commercially available electric vehicles are limited due to their battery weight and hence used mostly as neighbourhood vehicles. Three-wheelers are used mostly as neighbourhood vehicles and hence ideal for electrification. But no successful commercial electrically powered three-wheeler is available yet. Aerodynamic drag coefficient and rolling resistance coefficient are two basic parameters needed to determine the motor capacity of an electric vehicle. Accurate values of aerodynamic drag coefficient and rolling resistant coefficient are important to calculate accurate power estimate in electric vehicle design. In this paper we present an accurate method to determine the aerodynamic drag coefficient and rolling resistance coefficient of commonly available three-wheelers in Sri Lanka.
How to Cite: Jayasinghe, J.A.K.S., Samarasiri, B.S. & Rajakaruna, G.M.A.I., (2009). Aerodynamic Drag and Rolling Resistance of Three-Wheelers. Engineer: Journal of the Institution of Engineers, Sri Lanka. 42(4), pp.21–29. DOI: http://doi.org/10.4038/engineer.v42i4.7030
Published on 29 Oct 2009.
Peer Reviewed

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