In recent years, the speed of automobiles has continued to increase, and the total weight of trucks and buses has continued to increase. In addition, the general reduction of the center of gravity of cars and the widespread use of small-diameter and wide-section tires restrict the installation position of brakes. Therefore, the use of disc brakes with better braking thermal stability on heavy trucks and cars is increasing. Disc brakes can be divided into caliper disc brakes and full disc brakes.
Disc brake is also called disc brake. Its working principle can be described by a disc. When you pinch the rotating disc with your thumb and index finger, the disc will stop rotating. The disc brake on a car is composed of a brake oil pump, a brake disc connected to the wheel and a brake caliper on the disc. When braking, the high-pressure brake fluid pushes the piston in the caliper, pressing the brake shoe against the brake disc to produce a braking effect.
Disc brakes Disc brakes are sometimes called disc brakes. They are divided into ordinary disc brakes and ventilated disc brakes.
Ventilated disc brakes leave a gap between two brake discs to allow airflow to pass through the gap. Some ventilation discs also drill many circular vents on the disc surface, or cut out ventilation slots on the disc surface Or prefabricated rectangular ventilation holes. Ventilated disc brakes use the effect of air flow, and their cooling and heating effects are better than ordinary disc brakes. The main advantage of disc brakes is that they can brake quickly when braking at high speeds. The heat dissipation effect is better than drum brakes. The braking efficiency is good and it is easy to install advanced electronic equipment like ABS. The main advantages of drum brakes are that the brake shoes are less worn, lower in cost, and easy to repair.Because the absolute braking force of drum brakes is much higher than that of disc brakes, they are commonly used on rear-wheel drive trucks.