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Don't know don't say they know about cars! Drum brakes, disc brakes which work?
May 12, 2016

Xinjiang motor online: while small cars are now equipped with disc brakes, but that does not mean the drum brake is eliminated, they can be said to have their own advantages, but is more suitable for the different types of models. Is the time to extend the knowledge of these brakes to avoid like a well-known specialist, please, dedicated Board hanging as a farmer's tractor was ridiculous.


Drum brakes, disc brakes have any advantages and disadvantages?


And drum brakes


Drum brakes can be regarded as the earliest application on the vehicle's brake system, the so-called "drums" is the brake drum, mounted on wheels and turns with the wheel. Installed brake drum brakes, brake, brake piston will push outward friction brake pad and brake drum, achieve a braking effect.

Drum brake is simple in structure, low manufacturing cost, advantages of strong braking power, so weight such as truck bigger vehicles generally use drum brakes. But the big disadvantage is the heat sink is poor due to braking mechanism is enclosed inside the brake drum, brake heat quickly melted away in a row (so often we see the brakes of the truck to use water spray to cool down). Due to the drum brakes the brakes, check out the "top", brake drum thermal expansion and the brake pad contact surface becomes smaller, thus affecting braking efficiency.

For small cars, drum brakes are applied to the rear wheel of the vehicle, is what we call the front disc rear drum design, this design is more durable, for speed is not high, but like Van heavy duty vehicles, better front disc rear drum. Of course, front and rear disc brakes are more advanced, but most urban driving situations, the effect is the same, so open front disc rear drum models also need not worry about safety.

Second, disc brake


Disc brakes are now widely used on the vehicle's braking system. Brake discs with wheels, brakes, brake caliper Pistons push the brake pads squeeze the brake discs create friction for the brake effect. Advantages of good heat dissipation, the braking average, good drainage, and so on.

Of course, increasing demand for the vehicle brake performance, particularly high-end models, disc brakes have evolved many different types.

1. ventilated disc brakes

Now, most cars come with front ventilated rear disc brakes. Because most of the weight of these vehicles was accelerating quickly, better braking and shorter braking distances better drainage and heat dissipation.

Ventilated disc brakes, brake discs have a lot of holes, driving air through the holes in the process, cooling and draining effect. Meanwhile, relative to the solid disk, disc by removal of the part of the disk, thus lighter weight, reduce rotating inertia, improves acceleration and braking performance of the vehicle.

2. disc brake

Rear wheel disc brake applications in vehicles, brakes for braking, brake for vehicle parking, the advantage is to reduce brake callipers pressure, double brake in an emergency, this structure is more complicated, more expensive.

3. ceramic brake discs

Thermal degradation is brake's nemesis, resulting in decreased braking forces and ceramic material of the brake disc (made of ceramic fiber, iron-free packing material, adhesive and small amounts of metal composition) has a thermal decay, effectively guarantee the braking force. Of course, such a brake disc's cost is quite high, it is mainly used on high end cars and sports cars.