Title: Speed dependent rolling resistance evaluation of a twin roller chassis dynamometer for heavy-duty vehicles

Authors: Mohamed I. Salem, Victor H. Mucino, Mridul Gautam

Addresses: Department of Mechanical and Aerospace Engineering, College of Engineering and Mineral Resources, West Virginia University, USA. Department of Mechanical and Aerospace Engineering, College of Engineering and Mineral Resources, West Virginia University, USA. Department of Mechanical and Aerospace Engineering, College of Engineering and Mineral Resources, West Virginia University, USA

Abstract: The current interest in quantifying real-world emissions from heavy-duty vehicles has led to a far more extensive use of chassis dynamometers than ever before. Depending upon the objectives of chassis dynamometer testing, a range of different driving schedules could be employed to operate vehicles on the dynamometer. This paper addresses the losses associated with tyre-roller interaction on a chassis dynamometer. In this paper, a theoretical analysis has been conducted to evaluate the rolling resistance, as a function of vehicle speed, experienced by heavy-duty vehicle tyres on a twin-roller chassis dynamometer. This study focuses on the constant torque method to more accurately evaluate the parasitic losses of the dynamometer. Thus, a more accurate dynamometer control scheme could be implemented to simulate the road load for better assessment of a vehicles performance and exhaust gas emissions measurements.

Keywords: chassis dynamometer; rolling resistance; twin rollers; tyre impact; parasitic losses.

DOI: 10.1504/IJCAT.1999.000218

International Journal of Computer Applications in Technology, 1999 Vol.12 No.6, pp.349-357

Published online: 13 Jul 2003 *

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