Function and classification of brake disc
The brake disc is definitely used for braking, and its braking force comes from the brake caliper. Generally speaking, the general brake caliper is the part where the inner brake piston pump is fixed, and the outer side is a caliper type structure. The inner brake pad is fixed on the piston pump and the outer brake pad is fixed on the outside of the caliper. The piston pushes the inner brake pad through the pressure coming from the brake oil pipe, and at the same time pulls the caliper through the reaction force to make the outer brake pad inward. Both press the brake disc at the same time, and the braking force is generated by the friction between the brake disc and the inner and outer brake pads. In this process, the piston is driven by brake fluid, which is hydraulic oil. This is the engine boost.
For hand brakes, the cable is pulled through a lever mechanism, forcibly pulling the brake pads and pressing them against the brake disc to generate braking force.
Disc brakes classification
The brake disc is divided into a solid brake disc and a ventilated disc according to the structure. The solid brake disc is a metal disc used for braking and has no special construction. Ventilation discs are divided into two types, namely, a scribing disc and an opening disc. The two treatment methods are used to improve the cooling performance of the brake disc, reduce the thermal attenuation and provide better braking capability.
Brake discs are classified into carbon fiber ceramic brake discs and metal brake discs according to different materials. However, due to the high manufacturing cost of carbon fiber ceramic brake discs and the poor braking force at low temperatures, although they have excellent heat decay resistance, they still have excellent heat resistance. Not used by most vehicles. In order to increase the resistance to heat decay, some manufacturers also use carbon fiber brake discs for carbon fiber treatment to improve their ability in this area, while avoiding the problem of poor low temperature performance of carbon fiber ceramic materials.
Disc brake advantage
1. The heat dissipation of the disc brake is better than that of the drum brake. When the brake is continuously stepped on, the brake will not be degraded and the brake will be out of order.
2. The change in size of the brake disc after it is heated does not increase the stroke of the brake pedal.
3, the disc brake system has a fast response, can do high-frequency brake action, and thus more in line with the needs of the ABS system.
4. The disc brakes do not have the automatic tightening action of the drum brakes, so the braking force of the left and right wheels is relatively average.
5. Because the brake disc has better drainage, it can reduce the brakes caused by water or sediment.
6. Compared with the drum brake, the disc brake has a simple structure and is easy to maintain.
