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IJEMS Vol.11(5) [October 2004] >


Title: Effect of tyre overload and inflation pressure on rolling loss (resistance) and fuel consumption of automobile and truck/bus tyres
Authors: Pillai, Padmanabha S
Issue Date: Oct-2004
Publisher: CSIR
IPC CodeInt. Cl.7 B60C 17/00, G01L 17/00
Abstract: The effect of rolling resistance R on fuel consumption of radial passenger and truck tires is discussed in this paper. The model equation for the rolling loss R was directly proportional to tire load W (R W) and inversely proportional to inflation pressure p (R 1/px). These relationships were experimentally quantified. Using manufacturer’s recommended values for load W and pressure p as reference points the R values for different overload conditions (from +10 to +100%) at constant p were estimated. Similarly, the required p values to support 10 to 50% additional load to maintain original R were also estimated. Then the estimated R values for different overload/inflation pressure conditions were combined with the fuel saving factor F (obtained from published literature results). Then the relative change in fuel consumption of truck/bus tires for different load/pressure combinations vis-a-vis the fuel use for the manufacturer’s recommended W and p values was evaluated. The present analysis showed that for the same amount of fuel use a truck carrying a 100% overload and making one round trip would correspond to slightly more than two round trips by a truck of same size carrying the recommended load. Finally, a possible method of optimizing fuel use by adjusting the tire load/pressure conditions was suggested. All these estimates were obtained for radial tires. The author feels that the same methodology is applicable for bias tires also.
Page(s): 406-412
ISSN: 0975-1017 (Online); 0971-4588 (Print)
Source:IJEMS Vol.11(5) [October 2004]

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