The following describes the braking system
run faster should stop living - brake systems
car because of the rotation of the wheel to be able to travel on the road, when the car to stop, how to do it? The driver is not like a cartoon like Stick 'em to the ground to stop the car forward. This time you have to rely on the car's braking system to reduce the speed of the car and stopped.
By braking device "to the film" to create friction between the wheels and drum or disc, and convert the kinetic energy of the car when traveling in the course of friction into heat energy consumed. Brake means has common "drum brakes" and "brake disc" The two types, their basic features are as follows:
First, the brake drum:
mounting two semi-circular inside the wheel hub "to the film" by "lever principle" push "to the film" so "to the film" contact with the inner surface of the drum and friction.
Second, the disk brake:
to control the brake calipers two "to the film" to grip the brake disc on the wheel. In "to the film" When the clamp disc, between both of which cause friction.
Vehicles running on a low friction road surface slippery or icy, if excessively braking occurs, the wheel brake means is locked and lose traction, the ability to control the direction of the vehicle lost cause. In order to make this dangerous vehicles on the road can effectively control the way forward, then developed ABS "anti-lock braking system."
Increasing performance of ABS "anti-lock braking system", in occasion of its capability also allows TCS-Traction Control System "Traction Control System" and VSC-Vehicle Stability Control "vehicle stability control system" to borrow to control the vehicle in tracking performance when traveling, and a control vehicle stability during cornering.
Drum brakes
Drum brakes in the automotive above has been nearly a century of history, but because of its reliability, and powerful braking, making the brake drum today still configured (multi-use in rear) on many models. The drum brake device is by the hydraulic push it to a brake shoe drum brake within the brake shoes to the film surface and the inner surface of the wheel with the rotating brake drum of the friction occurs, the braking effect is generated.
Drum braking surface of the brake drum is in the braking position of the braking torque generating means. In the case of obtaining the same braking torque, the diameter of the drum brake drum braking device may be much better than the brake disc on the brake disc many small. So large vehicle truck used to obtain a powerful braking force can only be a drum brake device in the limited space of the rim.
Drum brake mode of action:
Briefly, brake pad drum brake is the use of a stationary internal drum brake, a friction brake drum to rotate with the wheel, a frictional force to brake the wheel rotational speed reduction means.
When the brake pedal, the piston in the brake master cylinder will force the pin to push forward and brake oil pressure generated in the oil passage. Brake fluid pressure is transmitted via the brake wheel cylinder of each piston, the piston brake cylinder brake shoes outwardly and then push the brake shoe to make the surface of the inner sheet and the drum brake friction occurs, and generate sufficient friction force to reduce the speed of the wheel, to achieve the purpose of braking.
The advantages of the brake drum:
1. automatic tight evil effect, so that the system can use a lower brake hydraulic pressure, or a brake disc having a diameter much smaller than the brake drum.
2. Easy to install hand brake mechanism. Hand rear wheel brake mechanism some device models disc brakes, brake discs will be installed in the center of the drum brake of.
3. The part of the process and composition of relatively simple, but have relatively low manufacturing costs.
The disadvantage of drum brake:
1. brake drum diameter of the drum braking increases when heated, causing the brake pedal to increase the stroke, where the reaction is likely to occur as expected braking. Therefore, the use of the vehicle while driving drum brakes, to avoid causing continuous brake to the film due to high temperature recession.
2. The brake system response is slow, the depression force of the brake more difficult to control, is not conducive to a high frequency of braking action to do.
3. The multi-part structure is complicated, brake clearance adjustment to be done, so that maintenance is not easy.
Disc brakes
due to the performance and the speed of travel of the vehicle with the dramatic increase in Japan, to increase the stability of the vehicle braking at high speeds, disc brakes have become the mainstream of the current brake system. Since the disk brake of the brake disc exposed to air, so that the disk brake has excellent heat resistance, when the vehicle brakes do emergency brake at high speed in a short time or more, the performance of braking is less likely to decline, so that the vehicle can be obtained better braking effect, to enhance the safety of the vehicle.
And because of the rapid reaction disc brakes, have the ability to do the braking action of high frequency, many car models with disc brakes with ABS systems and VSC, TCS with other systems, such systems need to meet the demand for rapid action to do.
Disc brake mode of action:
As the name suggests, a stationary disk brake brake disc, with the rotation of the tire sandwiching the brake disc to generate a frictional force, the rotational speed of the wheel braking device is low.
When the brake pedal, the piston is pushed in the brake master cylinder, the brake pressure is established in the oil passage. Pressure is transmitted via the brake fluid to the brake cylinder of the brake caliper pistons, brake cylinder after the piston under pressure moves outwardly and to the film to promote the clamping brake disc, so that the brake disc to the film with the friction occurring to reduce wheel speed, so the car slow down or stop.
The advantages of disc brakes:
1. disk brake good heat dissipation properties than a drum brake, when the continuous braking comparison depression does not cause the brake failure recession braking phenomenon.
2. After the brake disc does not make changing the size of the heated brakes pedal stroke increases.
3. The disk brake system of the reaction quickly, a high frequency of braking action to do, and thus meet the needs of more ABS system.
4. The disk brake evil-tightening effect is not automatically brake drum, and therefore more evenly around the wheel braking force.
The drainage performance due to the preferred brake disc, the case can be reduced because water or of sediment adversely brake.
6. The drum brake and the comparison, the disk brake is configured simple and easy to maintain.
The disk brake disadvantages:
1. Because there is no automatic brake drum evil-tightening effect of the braking force of the disk brake of the drum brake is relatively low.
To make the area of the friction plate and the brake disc between the brake drum is smaller than 2. The disk brake of the braking force is relatively small.
3. In order to improve the disadvantage of the brake disc, therefore required a large force or a hydraulic stepping. Necessitating a large diameter brake disc or increase the hydraulic braking system, the braking power to increase.
4. Hand brake apparatus easy to install, use and some rear disk brake models provided for this purpose plus a set of the hand brake of the drum brake mechanism.
The wear to make the sheet large, causing the frequency of replacement may be higher.
run faster should stop living - brake systems
car because of the rotation of the wheel to be able to travel on the road, when the car to stop, how to do it? The driver is not like a cartoon like Stick 'em to the ground to stop the car forward. This time you have to rely on the car's braking system to reduce the speed of the car and stopped.
By braking device "to the film" to create friction between the wheels and drum or disc, and convert the kinetic energy of the car when traveling in the course of friction into heat energy consumed. Brake means has common "drum brakes" and "brake disc" The two types, their basic features are as follows:
First, the brake drum:
mounting two semi-circular inside the wheel hub "to the film" by "lever principle" push "to the film" so "to the film" contact with the inner surface of the drum and friction.
Second, the disk brake:
to control the brake calipers two "to the film" to grip the brake disc on the wheel. In "to the film" When the clamp disc, between both of which cause friction.
Vehicles running on a low friction road surface slippery or icy, if excessively braking occurs, the wheel brake means is locked and lose traction, the ability to control the direction of the vehicle lost cause. In order to make this dangerous vehicles on the road can effectively control the way forward, then developed ABS "anti-lock braking system."
Increasing performance of ABS "anti-lock braking system", in occasion of its capability also allows TCS-Traction Control System "Traction Control System" and VSC-Vehicle Stability Control "vehicle stability control system" to borrow to control the vehicle in tracking performance when traveling, and a control vehicle stability during cornering.
Drum brakes
Drum brakes in the automotive above has been nearly a century of history, but because of its reliability, and powerful braking, making the brake drum today still configured (multi-use in rear) on many models. The drum brake device is by the hydraulic push it to a brake shoe drum brake within the brake shoes to the film surface and the inner surface of the wheel with the rotating brake drum of the friction occurs, the braking effect is generated.
Drum braking surface of the brake drum is in the braking position of the braking torque generating means. In the case of obtaining the same braking torque, the diameter of the drum brake drum braking device may be much better than the brake disc on the brake disc many small. So large vehicle truck used to obtain a powerful braking force can only be a drum brake device in the limited space of the rim.
Drum brake mode of action:
Briefly, brake pad drum brake is the use of a stationary internal drum brake, a friction brake drum to rotate with the wheel, a frictional force to brake the wheel rotational speed reduction means.
When the brake pedal, the piston in the brake master cylinder will force the pin to push forward and brake oil pressure generated in the oil passage. Brake fluid pressure is transmitted via the brake wheel cylinder of each piston, the piston brake cylinder brake shoes outwardly and then push the brake shoe to make the surface of the inner sheet and the drum brake friction occurs, and generate sufficient friction force to reduce the speed of the wheel, to achieve the purpose of braking.
The advantages of the brake drum:
1. automatic tight evil effect, so that the system can use a lower brake hydraulic pressure, or a brake disc having a diameter much smaller than the brake drum.
2. Easy to install hand brake mechanism. Hand rear wheel brake mechanism some device models disc brakes, brake discs will be installed in the center of the drum brake of.
3. The part of the process and composition of relatively simple, but have relatively low manufacturing costs.
The disadvantage of drum brake:
1. brake drum diameter of the drum braking increases when heated, causing the brake pedal to increase the stroke, where the reaction is likely to occur as expected braking. Therefore, the use of the vehicle while driving drum brakes, to avoid causing continuous brake to the film due to high temperature recession.
2. The brake system response is slow, the depression force of the brake more difficult to control, is not conducive to a high frequency of braking action to do.
3. The multi-part structure is complicated, brake clearance adjustment to be done, so that maintenance is not easy.
Disc brakes
due to the performance and the speed of travel of the vehicle with the dramatic increase in Japan, to increase the stability of the vehicle braking at high speeds, disc brakes have become the mainstream of the current brake system. Since the disk brake of the brake disc exposed to air, so that the disk brake has excellent heat resistance, when the vehicle brakes do emergency brake at high speed in a short time or more, the performance of braking is less likely to decline, so that the vehicle can be obtained better braking effect, to enhance the safety of the vehicle.
And because of the rapid reaction disc brakes, have the ability to do the braking action of high frequency, many car models with disc brakes with ABS systems and VSC, TCS with other systems, such systems need to meet the demand for rapid action to do.
Disc brake mode of action:
As the name suggests, a stationary disk brake brake disc, with the rotation of the tire sandwiching the brake disc to generate a frictional force, the rotational speed of the wheel braking device is low.
When the brake pedal, the piston is pushed in the brake master cylinder, the brake pressure is established in the oil passage. Pressure is transmitted via the brake fluid to the brake cylinder of the brake caliper pistons, brake cylinder after the piston under pressure moves outwardly and to the film to promote the clamping brake disc, so that the brake disc to the film with the friction occurring to reduce wheel speed, so the car slow down or stop.
The advantages of disc brakes:
1. disk brake good heat dissipation properties than a drum brake, when the continuous braking comparison depression does not cause the brake failure recession braking phenomenon.
2. After the brake disc does not make changing the size of the heated brakes pedal stroke increases.
3. The disk brake system of the reaction quickly, a high frequency of braking action to do, and thus meet the needs of more ABS system.
4. The disk brake evil-tightening effect is not automatically brake drum, and therefore more evenly around the wheel braking force.
The drainage performance due to the preferred brake disc, the case can be reduced because water or of sediment adversely brake.
6. The drum brake and the comparison, the disk brake is configured simple and easy to maintain.
The disk brake disadvantages:
1. Because there is no automatic brake drum evil-tightening effect of the braking force of the disk brake of the drum brake is relatively low.
To make the area of the friction plate and the brake disc between the brake drum is smaller than 2. The disk brake of the braking force is relatively small.
3. In order to improve the disadvantage of the brake disc, therefore required a large force or a hydraulic stepping. Necessitating a large diameter brake disc or increase the hydraulic braking system, the braking power to increase.
4. Hand brake apparatus easy to install, use and some rear disk brake models provided for this purpose plus a set of the hand brake of the drum brake mechanism.
The wear to make the sheet large, causing the frequency of replacement may be higher.
Reproduced in: https: //www.cnblogs.com/licheng/archive/2008/09/29/1302305.html