AMBIENT-TEMPERATURE EFFECTS ON TIRE ROLLING LOSS

This paper is concerned with tire rolling loss which is defined as the amount of heat generated by the rolling tire per unit distance. Part of this heat is conducted and stored within the tire body, part is dissipated at the tire surface. The dissipated heat is directly affected by the temperature of the ambient air. Since all heat modes are interactive, the ambient air temperature must therefore influence the heat generated by the tire and hence, its rolling loss. Presently, relations between ambient air temperature and rolling loss can be established only through measurements. This paper presents mathematical techniques which can be used for the calculation of the rolling loss in functions of ambient temperature. Use of equations developed is illustrated by examples.