Analisys of the Efficiency of a Conventional Ventilated Brake Disc Compared to a Hyperventilated Disc Obtained by Machining

Abstract

The objective of this study is to redesign a ventilated brake disc as a hyperventilated disc to compare the differences in temperature and brake distances; for this purpose, a monitoring system was installed in the vehicle which consisted of the implementation of two temperature sensors located near each disk and a data acquisition card. With the implementation of hyperventilated discs, the temperature generated by the braking friction could be reduced. The temperature values that occur between the discs when braking was monitored. To obtain the temperature values of the brake discs, road tests were conducted with different types of discs: ventilated discs on the two front wheels, hyperventilated discs on the two front wheels and mixed discs. In the mixed discs there is a ventilated disc on the right front wheel and a hyperventilated disc on the left front wheel. By displaying time data of the brake discs, it was possible to conclude that hyperventilated discs have better heat dissipation, since they have better ventilation. From all the results obtained on the route tests, it was possible to visualize the temperature behavior in the discs at the moment of braking and it was evidenced that hyperventilated discs tend to heat up less than normal discs, thus leading to a decrease in time and stopping distance.