First, what is Disc brake
Disc brake is a disc brake that is fixed to the tire and rotates at the same speed. When braking, oil pressure is used to push the brake pads to clamp the circular disc, and friction is generated by contact to brake. The brake pads on the caliper and the brake discs connected to the wheels interact with each other until the wheels stop rotating. Disc brake is divided into disc type, ventilated disc type, disc type and friction plate type.
Disc brakes have better responsiveness and stability, good heat dissipation, and are easy to replace. But its wear rate is relatively high and its cost is also relatively high.
Below we will talk about disc brakes (solid discs) and ventilated disc brakes.
Difference between solid Disc brake and ventilated Disc brake
Solid disc brake The solid disc (brake disc) is mostly made of gray iron, which dissipates heat quickly. It is mostly used for the rear wheels of cars or the front wheels of minicars, and the price is relatively cheap.
It belongs to the most common type of disc brake, also known as disc brake. The components he consists of include brake discs, wheel cylinders, brake calipers, and oil pipes. By hydraulic pressure, the friction plate contacts the brake disc, thereby achieving the goal of parking through the effect of friction. It is made of solid materials, without any gaps or other elements, which is the original disc brake. This type of brake has fast heat dissipation, light weight, simple structure, and convenient adjustment. Especially in high load, it has good heat resistance performance, stable braking effect, and is not afraid of mud and water invasion. When driving in winter and bad road conditions, Disc brake is easier to stop the car in a shorter time than drum brake.
Ventilated disc brake Ventilated disc (brake disc) is mostly used for the front wheel, which is expensive. Ventilated Disc brake brake has a ventilation hole in the middle of the brake disc; It belongs to the air-cooled type of disc brake, which can reduce the generation of heat during braking and increase its service life. According to the data, it can reduce the temperature increase by 20% to 30%, and the structure is very simple and the quality is also very lightweight. The selection of materials is also diversified, including carbon fiber reinforced materials, aluminum matrix composites, ceramics, and other friction materials, which have gained more practicality. Some disc brakes also have many small holes on the brake disc to accelerate ventilation and heat dissipation to improve braking efficiency. Ventilation discs can also be simple or complex, some of which are paired with mechanical mechanisms that guide wind to the brake discs. Changing the direction of the wind from horizontal to vertical is not very simple.
The difference between ventilated brake discs and solid brake discs
1. Position difference: The main position of the solid disc is on the rear wheel, while the position of the ventilation disc can be on all four wheels. 2. Structural difference: The selection of friction materials for ventilation discs is very extensive, but there are many more process holes than solid discs. The quality is lighter than solid discs, but the manufacturing process and price are more expensive than solid discs. 3. Effect difference: The heat dissipation performance of a ventilation plate is stronger than that of a solid plate, and the ventilation plate can improve the heat dissipation effect through the holes on the plate. The service life of the ventilation disc is also longer than that of the solid disc, which can be said to be an improvement of the solid disc. 4. Usage difference: Due to the fact that the ventilation disc can quickly dissipate heat during the braking process, the braking effect is also very good. A solid disc will affect its braking effect due to the heat brought by braking, and due to its larger weight, it will increase fuel consumption and maintenance costs. The solid type cannot be used for a long time, but the cost of maintenance and repair is much lower. The Mode of action of disc brake is similar to that of ordinary bicycles - a rubber brake disc connected with wheel hoops interacts when braking until the wheels stop rotating. Disc brakes can be easily combined with the ABS system, making them more suitable for use on mid to high-end sedans;
Nowadays, the rear wheels of ordinary small cars are equipped with disc brakes, commonly known as front discs and rear drums!
Overall, the ventilated disc is an advanced version of the solid disc, with better braking efficiency but also higher cost. Based on everyone's needs for installation, the standard configuration for manufacturers is usually solid disc brake discs, which are usually modified.