Family Cars Information

Car brake system

Car because of wheel rotation can be driven on roads, when the vehicle to stop in time, how can we do? The driver is not like animated films like Ba Jiaoshen to the ground to stop the car move forward at this time would have to rely on the vehicle brakes, to make the car speed reduced and stopped.

『Hidden in the wheel inside the brake system, is playing to make cars on the roads to stop the important device』

Brake by brake pads and wheel drum or disc to create friction between the plate and in the process of friction will be the kinetic energy of a moving car into heat energy consumed. Common brake the “drum brakes” and “disc brake” two kinds of patterns, their basic features are as follows:

1, drum brake:

Installed inside the wheel hub in the two semi-circular-type brakes, use of “leverage” to promote the brake and the wheel brake drum friction contact inside.

2, disc brake:

In order to control the brake caliper to clamp two brake wheels, brake discs on the disc. In the brake pads grip the dish, its produce friction between the two.

『High-performance sports car used mostly perforated ventilated disc brakes with a good cooling effect』

 『Cold air through the wheel, the brakes to cool』

Car in slippery or icy driving on low friction surface when the situation in the event of over-braking, then the wheel will be locked brakes lose their grip, resulting in loss of control over the direction of vehicle capabilities. To make this dangerous road vehicles able to effectively control the way forward, so developed ABS “Anti-lock braking system.”

Increasingly strong performance of ABS “antilock braking systems”, in the occasion of its capability can also allow the TCS-Traction Control System “Traction Control System” and the VSC-Vehicle Stability Control “Vehicle Stability Control System” (equivalent to ESP) to control the vehicles in the tracking performance and control of vehicle stability when cornering performance.

● The role of drum brakes by:
 
    Drum brakes have been applied in the car above nearly a century, but because of its reliability and powerful braking force, making drum brakes it is still configured in a number of models (mostly used in rear). Drum brake is provided by a hydraulic brake drums will be installed in the brake pads within the deliberately alienate, so that the wheels turning as the brake pads and drum brake friction within the surface, while the resulting braking effect.

Brake drum brake drum brake inside is the brake torque generated position. Obtain the same braking torque in the circumstances, the drum brakes of the brake drum diameter disc brake rotors can be more than many even smaller. Therefore, a large heavy-duty vehicles used in order to obtain a powerful braking force can only be among the limited space in the rim of the drum brake device.

Simply put, is the use of brake drum brake drum brake inside the static to friction with the rotating wheels, brake drums, to produce the rotation speed of the wheels to reduce friction so that the braking device.

 Depresses the brake pedal, the foot will dictate the piston within the brake master cylinder pushes brake fluid will go to generate pressure in the oil line. Transmitted through the brake oil pressure to each wheel brake Cylinder piston brake Cylinder piston brake and then push outwards, so that brake pads and brake drum inner surface friction, and generate enough friction to reduce the wheel speed, in order to achieve the purpose of the brakes.

Brake advantages:

1. The role of the automatic brake tight, so that you can use a lower brake system hydraulic, or the use of much smaller diameter than the brake discs brake drums.

2. Handbrake body easy to install. Some rear disc brake device models will be installed at the center of drum brakes brakes handbrake body.

3. Parts of the processing and the composition of relatively simple, while relatively low manufacturing costs.

Drum brakes Disadvantages:

1. Drum brake after the brake drum diameter of the heat will increase, causing depresses the brake pedal travel increased, as expected prone to brake reaction situation. Therefore, driving vehicles with drum brakes, to avoid causing a continuous brake pads generate heat due to heat recession.

2. Brake system response slower, braking harder to control than the stampede strength is not conducive to doing high-frequency braking action.

3. Construct more complex parts, brake gap adjustment to be done, making repairs difficult.

● The role of disc brake method:

As the vehicle performance and speed with Japan rose dramatically, in order to increase the traffic moving at high speed braking stability of the brake disc brake system has now become mainstream. As the disc brake rotors exposed to the air, making disc brakes have good heat dissipation at high speed when the vehicle is braking or in a short time doing repeated brakes, brake performance, less likely to decline, allowing vehicle access to better braking effect, to enhance vehicle safety.

And because the reaction disc brake quickly and are able to do high-frequency braking action, so many cars with disc brakes and ABS systems, and VSC, TCS and other systems with, in order to meet such a system needs to move quickly to do the needs.

As the name suggests, disc brake disc brakes with a static, grip with the tires rotating disc to produce friction brake discs, so that the low rate of wheel rotation braking device. When the pedal to brake pedal, the brake master cylinder piston will be promoted within, and in the brake oil line to create pressure. Transmitted through the brake oil pressure to the brake caliper piston on the Wheel Cylinder, Wheel Cylinder of the piston under pressure, they will move out and promote the brake disc brake pads to the clamp, making friction brake pads and brake disc to reduce the wheel speed, so that cars slow down or stop.

Disc brake advantages:

1. Disc brakes over drum brakes excellent heat dissipation, in a continuous stampede when the brakes are less likely to cause recession Ershi brake brake failure phenomenon.

2. Brake disc size after the change in the heat does not make the brake pedal travel increases.

3. Disc brake system response to fast, to do high-frequency braking action, and thus more in line with ABS systems.

4. Disc brake drum brake automatically evil is not tight and, accordingly, left wheel braking forces are relatively average.

5. Because the drainage of a better brake disc can be reduced because of water or sediment caused by brake bad situation.

6. A comparison with drum brakes, disc brake construction of simple and easy to repair.

Disc brakes Disadvantages:

1. Because there is no tight drum brakes automatically evil role, so that the brake disc brake drum brake force than the lower.

2. Disc brake pads and brake disc brake friction between the brake drum smaller than the small, so that braking force is relatively small.

3. In order to improve the shortcomings of the above-mentioned disc brakes, therefore, need a larger force, or hydraulic stampede. Therefore you must use a larger diameter rotors, or improving the hydraulic braking system to increase braking power.

4. Handbrake device is not easy to install, and some rear disc brake models used for this purpose an additional set of drum brakes handbrake body.

5. Brake pads wear and tear of the larger, caused by the replacement frequency may be higher.