Braking Force/Braking Slip: Measurements over a Range of Conditions Between 0 and 100 Per Cent Slip

摘要

The relationship between braking force coefficient (BFC) and braking slip for various tires and wed road surfaces was investigated with particular reference to the development of non-locking braking systems. Variables investigated include tread patterns, tread material, road surface texture, speed, and tire construction. Results show that the BFC/braking slip curve rapidly reaches a peak between 7 and 25 per cent braking slip and then remains fairly constant or slowly decreasing until at about 85 per cent braking slip there is a sharp decrease as the locked wheel condition is approached. In both peak and locked wheel conditions, measurements confirmed previous findings relating to effectiveness of tread patterns in relation to smooth tires, effectiveness of lower resilience tread materials, and differences in tire construction. Tests were also conducted under conditions combining braking and cornering. (Author)