Speed dependent rolling resistance evaluation of a twin roller chassis dynamometer for heavy-duty vehicles
by Mohamed I. Salem, Victor H. Mucino, Mridul Gautam
International Journal of Computer Applications in Technology (IJCAT), Vol. 12, No. 6, 1999

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.

Online publication date: Sun, 13-Jul-2003

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