Detailed braking system run faster also need to brake is maintained－生活點滴

Detailed braking system run faster also need to brake is maintained

Car because the rotation of the wheels can be driven on the road when the car to stop, how to do it? The driver can not be like the cartoon, like the Stick 'em to the ground to stop the car forward, this time to have to rely on the car brakes, to make the car slow down and stop.

Brakes by the brake pads and wheel drum or disc to create friction and friction during the process of vehicle driving kinetic energy into heat energy consumed. The common brake drum brake and disc brake "two kinds of type, and their basic characteristics are as follows:

First, the drum brakes:

Installation of two semi-circular brake pads, wheel hub which the use of "leverage" to promote the brake pads brake pads and wheel drum surface contact and friction.

Second, the disc brake:

To control the two brake calipers brake pads to grip the wheel on the brake racing disc. The brake pads grip the disc, the friction between the two.

The car when driving on wet or icy low-friction road, the event of over-braking situation, then the wheels are brakes lock up and lose their grip, causing the vehicle to lose the ability to control the direction of. To enable the vehicle to be able to effectively control the forward direction, so the ABS antilock braking system developed in this dangerous road.

Increasing performance of the ABS "anti-lock brake system, ease the occasion allows the TCS-TractionControlSystem" traction control "and the VSC-VehicleStabilityControl" vehicle stability control system (equivalent to ESP) to control the vehicle tracking performance when driving, as well as control the vehicle when cornering stability.

Simply put, the drum brakes is still in the brake drum brakes, to the friction with the rotation of the wheels, brake drums, to produce the friction wheel rotation speed-reduction brake.

Depresses the brake pedal, the foot force causes the brake master cylinder piston brake fluid to push forward and to generate pressure in the circuit. Pressure transmitted through the brake fluid to each wheel brake wheel cylinder pistons, brake wheel cylinder piston and then push the brake pads out of the inner surface of the brake pads and brake drum friction, and generate enough friction to reduce the speed of the wheels. to brakes purposes.

The advantages of drum brakes:

(1) the role of automatic brake tight, the brake system can use a low oil pressure, or use the brake drum brake disc is much smaller in diameter.

The installation of the parking brake is easy. Some models of disc brake rear wheel devices, install drum brakes, parking brake in the brake disc the center of institutions.

Three parts of the process and composition are relatively simple, and relatively low manufacturing costs.

The disadvantage of drum brakes:

Drum brakes, brake drum diameter in the heat increases, caused by the stroke of the brake pedal is depressed to increase, prone to brake response, as expected. Therefore, when driving vehicles with drum brakes, to avoid continuous brakes resulting in brake pads due to high temperature heat recession.

(2) braking system slow response, the the stampede force braking more difficult to control, braking action is not conducive to high frequency.

Construct complex parts and more brake clearance to be done to adjust, making the repair is not easy.

Increasing performance and speed of the vehicle, in order to increase the braking stability of the vehicle at high speeds, disc brakes have become the mainstream of the brake system. Disc brakes, brake discs exposed to the air, disc brakes have excellent heat dissipation, when the vehicle brakes at high speed or brake several times in a short period of time, brake performance is more difficult recession, allowing the vehicle to obtain better brake effect to enhance the safety of the vehicle.

And disc brakes, quick response, the ability to do high-frequency braking action, so many cars with disc brakes and ABS system and VSC, TCS and other systems with in order to meet the demand for such systems need to quickly move.

As the name suggests, the disc brake stationary brake discs clamped with the tire rotation, brake disc to produce friction, wheel rotation speed will be low brake.

When the brakes, the brake master cylinder piston is being pushed to establish the pressure in the brake oil. Pressure transmitted through the brake fluid to the brake wheel cylinder piston brake calipers, brake wheel cylinder piston under pressure, will move outward and promote the brake pads clamping the brake disc, brake pads and brake disc friction to reduce the wheel speed, so that vehicles slow down or stop.

The advantages of disc brakes:

A disc brake heat dissipation compared to drum brakes good, continuous stampede braking does not cause the brake recession leaving brake failure.

2 brakes in the heat after the change of size is not to step on the brake pedal travel to increase.

Rapid response of the disc brake system, do the high-frequency braking action, and thus more in line with the needs of the ABS system.

4 disc brakes drum brakes of automatic brake tight around the wheel brake forces are relatively average.

Better drainage. Brakes, brake bad the situation can be reduced because of water or sediment.

With drum brakes, the brake simple structure and easy maintenance.

Disc brakes Disadvantages:

A. Braking force is lower than the drum brakes disc brakes drum brakes, automatic brake tight.

Small area of friction between the brake pads and brake discs brake drum brakes, the brake force is relatively small.

To improve the shortcomings of the brake, and therefore required a larger the stampede force or hydraulic. And therefore must use a larger diameter brake discs, or to improve the hydraulic brake system, in order to improve the braking force.

The parking brake device is not easy to install, and some rear wheel disc brake models for this addition of a set of drum brakes, hand brake institutions.

(5) brake pads wear and tear, caused by the replacement frequency may be higher.