i.e., disc brake disc brakes, also known as disc brakes, whichever shape suggests that it is named. It is controlled by a hydraulic pressure, the main components include a brake disc, cylinder, brake caliper, tubing and the like.
1. The disc brake of noun
i.e., disc brake disc brakes, also known as disc brakes, whichever shape suggests that it is named. It is controlled by a hydraulic pressure, the main components include a brake disc, cylinder, brake caliper, tubing and the like.
2. The disc brake disadvantages
●-tightening effect because there is no automatic brake drum brake of the braking force of the disc brake drum brake is relatively low;
● friction area between the brake pads and the brake disc brakes smaller drum brake of the braking force is relatively small;
● to improve the drawback of the above disc brakes, and therefore needs more pedaling force or hydraulic pressure. Necessitating a larger diameter brake discs or increase the hydraulic braking system, in order to improve braking power;
● parking brake apparatus easy to install, and some models rear disc brake used for this purpose set the parking brake mechanism is provided plus a drum brake.
● large to make the wear of the sheet, causing the frequency of replacement may be higher;
● higher maintenance costs.
3. The operation of the brake disc
for producing an alloy steel and the brake disc fixed to a wheel, rotating with the wheel. Cylinder fixed immovably on the bottom plate of the brake. Two friction plates respectively mounted on the caliper on both sides of the brake disc. Hydraulically acting piston cylinder tubing conveyed, pushing friction plate friction brake pressure to the brake disc occurs, the operation as if it clamped with pliers rotating plate, forcing it to stop the same.
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4 advantages of the disc brake
● disc brake drum brake good heat dissipation properties than in continuous pedaling brake the brake does not cause attenuation of the phenomenon of brake failure;
[123 ] ● brakes in the thermal expansion amount in the thickness direction is very small, change in size after heating step does not make the brake pedal stroke is increased;
● rapid reaction disc brake system, the brake can do high frequency operation, and thus meet the needs of more ABS system;
● no disc brake drum brake friction to help potential effect, and therefore the braking force more evenly left and right wheels;
● due to the brake disc preferably, drainage, water or sediment can be reduced because of adverse circumstances brake;
● lower compared with drum brakes, disc brake structure is simple, relatively easy to achieve automatic adjustment of the gap, and is easy to maintain .
● output at the same braking torque, the relatively small size and mass of the drum brake.
5. The disc brake free
● vent disk
ventilated brake disc name implies is hollow inside, cold air can be cooled through the middle, generally used for civilian vehicle wheel brakes. From the outside, it has many holes leading to the center in the circumferential space, which is generated in use of the car the exercise of centrifugal force which enables the air convection cooling purposes, many
better heat dissipation than conventional disc [123 ]
● perforation ventilated discs
ventilated disc is perforated disk to puncture the vent disk, based on the maximum degree of air circulation, reducing thermal decay.
Punch vent disk than a ventilated disc for a grade level.
● ceramic brake discs
is not common porcelain ceramic brakes, but the carbon fibers to silicon carbide at a high temperature of 1700 synthetic reinforced composite ceramics. Only half the normal weight of the cast iron plate ceramic plate less than, and effective and stable resistance to thermal decay, the heat effect is many times higher than normal brakes.