There are two types of brake systems: discs and drum types. The disc brakes can be divided into discs and ventilation discs. Disc, discs, and friction types can be attributed to disc brakes.
The method of disk brakes is similar to that of ordinary bicycles. The brake pads on the caliper and the brake disc of the wheel link to the wheels are interacted until the wheel stops rotating. The ventilation disk is perforated on the brake disc, using the natural wind brought by driving to help heat dissipation. The way of drum brakes is with the bicycle\'s \\u0026 ldquo; rising gates \\u0026 rdquo; similar \\u0026 mdash; \\u0026 mdash; \\u0026 mdash; pot -shaped brake drum connected to the wheels, and the half -moon brake pads are upward, causing the wheels to stop rotating. Essence
The disc brakes can be easily cooperated with the ABS system to use more on the mid -to -high -end cars; while the drum brakes have lower costs and absolute brakes. Essence
Advantages of Drum -type brakes
1. Self -braking effect: Drum -type brakes have a good self -braking effect. Due to the brakes to make the film outside, the wheels rotate with the outside brake drum distortions distorted One angle (of course it won\'t be so big that it makes you easy to see) to brake to make the outside tension (brake power) larger, the more obvious the situation. Therefore, generally large vehicles still use drum brakes, except for the cost compared to the cost, the cost is more than the cost is more than the cost. In addition, the difference between the drum brakes of large and small cars may only be a large -scale use of pneumatic auxiliary, while the small car uses a vacuum assistance to help the brake.
2. Low cost: The technical level of drum -type brake manufacturing is low, and it is also the first for the brake system. Therefore, the manufacturing cost is lower than the disc brakes.
Drimpse brakes
Due to the drum brakes and brakes to seal the film in the brake drum, causing the brake to make the debris after the chip worn out The contact surface of the film affects the brake performance.
Advantages of disc brakes
Since the brake system is not sealed, the fine dandruff worn by the brakes will not be deposited on the brakes. Throw it out to maintain certain cleaning. In addition, because the disc brake parts are independent, it is easier to repair than the drum brakes
Disadvantages of disc brakes
Disk brakes, in addition to high costs, are basically better than drum -type brakes , But just this point has become a fatal injury. Everyone loves money. Unless you are very rich, you can basically take the money first to consider the money first. Do you say it? The disc brakes are also called disc brakes, as the name suggests, the shape is named. It is controlled by hydraulic pressure. The main parts include brake discs, split pumps, brake mi, oil pipes, etc. The brake disc is made of alloy steel and fixed on the wheels, rotating with the wheels. The split pump is fixed on the bottom plate of the brake. The two friction tablets on the brake pliers are installed on the brake disk respectivelyBoth sides. The hydraulic effect of the pistol of the pump was transported by the oil pipe, which pushed the friction plate to press the brake disk and properly manipulated. It was as if to use a pliers to clamp the plate in the rotating, forcing it to stop. Such brakes are fast, light weight, simple structure, and easy to adjust. Especially when high -loading, high temperature resistance is good, the braking effect is stable, and it is not afraid of mud water invasion. Driving in winter and harsh road conditions, disc braking is easier to stop the car in a short time than drum braking. There are also many small holes on the brake discs of some disc brakes to accelerate ventilation and heat dissipation to improve braking efficiency. On the other hand, due to poor heat dissipation performance, a large amount of heat will gather during the braking process. Under the impact of high temperature, brake hoofs and drums are more likely to have extremely complicated deformation, which is prone to braking decline and shake, causing decreased braking efficiency. Of course, disc brakes also have their own flaws. For example, the manufacturing requirements for brakes and brake pipe roads are high, the consumption of friction pieces is large, and the cost is expensive. Moreover, due to the small area of \\u200b\\u200bthe friction tablet, the relatively friction working surface is also small. It is necessary to help the vehicle of the device to use it, so it can only be applied to light vehicles. The cost of drum brakes is relatively low and more economical.
Therefore, from the perspective of economic and practical perspectives, car designers generally use mixed forms, front wheel disk braking, and rear wheel drum braking. During the braking process of the four -wheel car, due to the effect of inertia, the load of the front wheels usually accounts for 70%-80%of the total load of the car. Therefore, the front wheel power is larger than the rear wheel. In order to save costs, car manufacturers use front -wheel disk braking and rear wheel drum braking. The four -wheel disk braking mid -to -high -end sedan uses front -wheel ventilation disc braking is to better dissipate heat. As for the rear wheels, non -windows are also costly. After all, the ventilation disk manufacturing process is much more complicated, and the price is relatively expensive. With the development of materials science and the decrease in costs, in the field of cars, disc braking has gradually replaced the trend of drum braking.
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