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1.The construction is different 2Serious Statement:
The braking force of disc brakes is less than that of hub brakes!! The braking power of the hub type is large! You can go and see all the big trucks and construction vehicles!
Why do most cars use disc type? Mainly because the heat dissipation performance of the disc type is good, and the thermal decay performance of the braking force is good!! That is, his braking force must be stable!
In the case of floating in a small range even if it is very hot! The disadvantage of hub brake is that the thermal decay is not good! As soon as the braking force is heated, it changes greatly, and there is almost no subsiding!!
Therefore, for the sake of high stability, most high-speed cars use disc !!
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The brakes of the car are divided into disc killing and drum brakes, which are relatively better on the disc and have better heat dissipation.
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Now most models use four-wheel disc brakes, and low-end models are front wheel disc brakes and rear wheel drum brakes, and the disc brakes have better heat dissipation. Hope mine can help you.
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Drum brake is to "rise" the brake pad from the inside to the outside "resist" the brake drum to form friction, the drum brake has a shape like a tambourine cast iron, called the brake drum, it is fixed with the tire and rotates at the same speed. The braking force generated by using the brake shoe to squeeze the brake drum to brake is mostly used for small trucks and low-grade cars, because of its weak braking force, it is easy to cause instantaneous brake failure after wet water, and the thermal decay is fast, etc., it is on the verge of obsolescence and belongs to backward technology.
Disc brakes, on the other hand, use brake pads to "clamp" the brake disc from the outside to the inside to create friction.
Theoretically, the larger the area of friction, the better the braking, so it is best not to slot or open the hole, but the overall quality of the brake, in addition to considering the effect of friction, students should consider the heat dissipation of the braking system and remove the dust generated by the brake as soon as possible. So. Slotting is mainly to remove dust, and the opening can not only remove dust to help heat dissipation, although the area of friction of a fin is reduced by slotting or opening, but the area can be increased by other ways.
The current mainstream braking system is disc brakes. Disc brake systems are further divided into solid disc brakes and ventilated disc brakes. The principle is the same, they all use the pressure generated by the brake oil pump to drive the brake caliper to squeeze the brake disc to generate braking force.
The main features are small thermal attenuation, sensitive braking, and the ABS system can effectively prevent the wheels from locking, and the braking force is strong.
It's just that the brake disc ruler of the solid disc brake system has less rain, and there are no ventilation holes, and the braking force is not as large as the ventilated disc, but the solid disc brake system is cheaper to manufacture.
Disc brakes can be divided into disc brakes and ventilated disc brakes. Discs, discs, and platoons can all be classified as disc brakes.
Disc brake is a disc that is fixed with the tire and rotates at the same speed, and the brake pad is clamped by hydraulic pressure when braking, and the friction generated by the contact is used to brake.
Disc brakes have better responsiveness and stability, good heat dissipation, and easy to replace. However, its wear rate is higher and the cost is higher.
In addition, disc brakes work in much the same way as our average bicycle braking——— a rubber brake disc connected to the wheel hoop interacts with each other during braking until the wheel stops turning.
The most important thing is that the disc brake can be easily coordinated with the ABS system and is more used on mid-to-high-end cars; Drum brakes, on the other hand, have a lower cost and higher absolute braking power, making it easier to brake with one kick. Now it is more used in the rear wheels of general small cars, which is generally said to be the front disc and rear drum.
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Disc brake is used to hold the brake disc like a disc, and the drum brake is held by two brake pads, and the disc brake is easier to brake the car than the drum brake.
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The disc is better than the hub, the ventilation is good, and the cooling is fast.
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The braking performance of the disc kill is much better than that of the drum kill, and the car will not deviate.
The ventilated discs are better now, and the ceramic and carbon discs on the rest of the premium sports cars are the best, and the heat dissipation is relatively fast.
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Disc brakes (disc brakes) have large and stable braking force under the help of fluids, and have good braking performance on various road surfaces, and their braking effect is much higher than that of drum brakes. Moreover, since the air passes directly through the disc brakes, it dissipates heat very well. However, the disc brake structure is more complex than the drum brake, and the requirements for the paper tongs and pipeline system are also higher, and the cost is higher than that of the drum brake.
Drum brakes (drum brakes) are significantly inferior in braking performance and heat dissipation performance compared to disc brakes. Moreover, its dynamic stability is poor, and the braking force performance on different road surfaces changes greatly, which is difficult to control. Due to poor heat dissipation, the drum brake also has thermal decay.
However, drum brakes are cheap and simple in structure.
At present, most domestic sedans still use front disc rear drums. However, the wholesale replacement of drum brakes with disc brakes is still the main trend.
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Disc brakes and disc brakes are one meaning. Disc brakes and drum brakes are two different things. Drum brake has low cost, low maintenance cost and low technical requirements, so some low-cost rear brakes are drum brakes, disc brakes have good heat dissipation, low noise, strong braking effect, and good disc brakes.
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Now high-end cars are disc brakes both front and rear.
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Front disc and rear drum,
Disc brakes are disc brakes, also known as disc brakes, as the name suggests, they are named after their shape. It is controlled by hydraulic pressure, and the main components are brake discs, cylinders, brake calipers, oil pipes, etc. The brake disc is made of alloy steel and fixed to the wheel, which rotates with the wheel.
The sub-cylinder is fixed on the bottom plate of the brake. The two friction pads on the caliper are mounted on each side of the brake disc. The piston of the sub-cylinder is driven by the hydraulic action from the oil pipe, and the friction plate is pressed against the brake disc to cause friction braking, and the action is as if the rotating disc is clamped with pliers to force it to stop.
Advantages: Because the brake system is not sealed, the impurities of brake wear will not remain on the brake, and the centrifugal force of the disc brake can throw all water, dust and other pollution outward to maintain a certain cleanliness. In addition, disc brake parts are easier to service than drum brakes because they are separated.
Disadvantages: the cost of disc brakes is higher, such as the manufacturing requirements of brakes and brake pipelines are higher, the consumption of friction plates is larger, the cost is expensive, and because the area of friction plates is small, the working surface of relative friction is also small, the brake hydraulic pressure required is high, and the vehicle with a booster device must be used, so it can only be applied to light vehicles.
Drum brakes have an iron cast shaped like a tambourine, called a brake drum, which is fixed with the tire and rotates at the same speed. When braking, the brake shoes are pushed by oil pressure to contact the inner edge of the brake drum, and the friction force generated by the contact is used to inhibit the rotation of the tire to achieve the purpose of braking. The drum brake is composed of brake floor, brake cylinder, brake shoe and other related connecting rods, springs, pins and brake drums.
At present, it is only commonly used on the rear wheels. Drum brakes are less expensive and have higher absolute braking power, and are more commonly used in the rear wheels of small cars. However, its abrasion rate is high.
Advantages: drum brake has a good self-braking effect, due to the brake to make the piece outward, the wheel rotation with the outer brake drum twisted by an angle (of course, not so large that you can easily see) brake to make the piece outside the tension (braking force) The greater the situation, the more obvious the situation, therefore, the general large vehicle or the use of drum brake, in addition to the lower cost, the drum brake of large cars and small cars, the difference may only be large pneumatic assistance, and small cars use vacuum assistance to help brake. Lower cost; Drum brakes are manufactured at a lower level of technology and are first used in the braking system, so the manufacturing cost is lower than that of disc brakes.
Disadvantages: Because the drum brake pad is sealed in the brake drum, the fragmentation of the brake pad after wear cannot be dispersed, which affects the contact surface between the brake drum and the pad and affects the brake performance.
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Butterfly brakes are good. Drum killing is easy to die violently, resulting in slippage and causing accidents. The average car is a front butterfly and a rear drum. The better ones are all butterflies.
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Disc brakes are good, drum brakes are not good.
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The disc is good. You've seen a good car that was killed with a drum.
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Drum brake is a brake in the traditional sense has been used for n years, using brake drums and brake shoes Disc brake appeared later, using brake discs and brake pads. Differences: Drum brakes are a little less sensitive, but they are suitable for carrying large loads, and the cost is low, disc brakes first appeared in sedans, and they are more suitable for braking at high speeds.
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The brake is easy to maintain and repair, and the braking distance is shorter than the drum brake This is the benefit of the disc brake Disc brake and drum brake have their own benefits Like a big car, the disc brake cannot be braked.
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There's a car with a hole in the car, and that's for safety reasons.
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There is a car with a hole in the car killing disc This is best to upload a **.
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There's a car with a hole in the car, and it's a good idea to look at the vehicle's configuration table.
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The main benefit of having holes is good heat dissipation and coolness.
Do not drill holes in the disc of the original car, as this will affect the strength of the original brake disc, and it is dangerous in case the brake disc cracks during driving.
Personally, I feel that there is no need to modify the brake disc with holes, and buying bad modifications will also cause potential safety hazards.
For the average vehicle, the braking effect does not change much.
There's no need to waste this money.
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1.The brake disc with holes is used for heat dissipation and special environments, and generally the brake discs with holes are used in racing cars such as road or off-road, etc., 2The brake disc with holes is dedicated, not drilled in the disc of the original car, which will affect the strength of the original brake disc, 3
There is no difference between brake discs with and without holes in normal driving, and only when frequent high-speed pedaling will show superiority, but it does not mean that the brake pads will not be mushy.
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The holes in the brake disc are used to dissipate heat.
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It is best not to change the car, and if you change it yourself, you will have to bear it yourself, and the car manufacturer will not care