摘要：Because the car must be in the process of braking, including deceleration and parking and including downhill to maintain the speed of stability, in addition to the above driving brake should also include parking brake which is to maintain the stop of the vehicle that continues to maintain static, according to the law of Conservation of Energy. The kinetic energy of the brake drum of the rotating part of the friction pair is converted into the internal energy of the friction plate on the friction surface, which is very dangerous due to the thermal decay performance of the existing brakes. It is urgent to implement the cooling system of brake in the above conditions. This paper mainly aimed at the braking performance of the thermal decline of the design of automatic control cooling device, first of all by the sensor to collect the car brake signal, with the opening of the cooling system work that will be normal temperature air cooling into cold air and drum to the cooling parts, complete drum brake cooling, improve the active safety performance of automobiles. In this paper, we select the devices used in the cooling system through the actual working condition of the automobile, and finally design a practical solution.
