When the brakes are about to fail, what are the typical abnormalities in the car?

When the brakes are about to fail, what are the typical abnormalities in the car? What is the most important thing about driving? Of course, in addition to a safe journey, obeying traffic rules, and driving safely, the mechanical parts of the car itself also deserve special attention, such as the car's braking system.

As we all know, the brake is the most important safety component of the car, and it is difficult to imagine how dangerous it is without the protection of the brake. If the following three abnormalities occur while driving, it may be a precursor to brake failure.

On the way to drive, the car has these three abnormalities, which may be due to the failure of the brakes.

1. When the brakes are applied, there is an abnormal bump in the brakes, so this situation must be highly vigilant. If possible, pull over immediately, find the nearest repair shop, and check whether the brake disc is faulty. Don't be shabby, continuing to drive at high speeds can be very dangerous.

Second, when the car is driving normally, step on the brakes and find that the brakes are weak or hard, and the braking distance is much longer than before. You should be vigilant. You can clearly feel the weakening of the braking force, so the pressure of the sub-pump, master cylinder may not be enough, or there may be oil leakage. Please go and repair it immediately.

3. When the brakes are pressed, the car makes a metallic sound. This voice is absolutely audible. Piercing and sharp. The reason for this is basically that the brake pads become thinner, and the back plate rubs the brake disc hard, which affects the braking effect. This situation also warrants the driver's vigilance.

The above three situations must be paid special attention to before the brakes are about to fail, and brake failure is much more dangerous than a car puncture. Especially in a car driving at high speed, if you don't do anything, the moment the brakes really fail, this result is unimaginable. In addition, many people do not have the experience of brake failure, and there are often uncontrollable scenes.

There is no regret medicine in the world, and you can only completely avoid the accident of brake failure by looking at the brakes of the car.

In the process of applying the brakes, these cars will be insensitive, and the braking effect is relatively poor, and the noise is relatively large.

The car will generally lose control, and it will also cause the speed of the car to increase, and when the brakes are applied, the car will also cause abnormal shaking, or there is no reaction when the brakes are pressed, or there is a metallic sound when the brakes are pressed.

The brakes will make abnormal noises, they will harden when the brakes are pressed, there will be oil leaks, the body will deviate, and the brakes will not respond.

Cars generally have inexplicable acceleration, because the brake failure causes some very bad phenomena in the car, and at the same time, it will also make people panic.

1. Lack of necessary maintenance of the brake system, too many impurities in the brake master cylinder, poor sealing, failure of the vacuum booster pump, excessive dirt of brake oil or air resistance after mixing and heating of several brake oils, oil leakage of the brake master cylinder or sub-cylinder, air leakage of the gas tank or pipeline interface;

2. Due to serious overload, under the action of gravitational acceleration, the inertia of vehicle movement is increased, which directly leads to brake failure.

3. Due to improper operation, the parts fail, such as long-term downhill will cause the brake pads to rub and generate heat, the brake hub to carbonize, and the brake function to completely fail.

Precautions in the event of brake failure:

When a brake failure occurs, the driver should first remain calm and not panic. The right thing to do is to quickly downshift while controlling the direction according to the road conditions and speed.

The high-speed gear grabs people directly and then quickly grabs people in the medium-speed gear, at this time the engine will have a great traction resistance to reduce the speed rapidly, at this time, you can use the hand brake to quickly rush into the low-speed gear and the lowest gear, and then use the hand brake to control the vehicle to stop.

If the hand brake effect is not good, you can also use the hillside to force the vehicle to stop, or control the vehicle at low speed to gradually stop on a flat road. When the uphill braking fails, it should be reduced to medium and low gears in time. Maintain enough momentum to drive up to the top of the hill to stop.

If you need to park on a half-slope, you should keep the forward low gear, tighten the hand brake, and the personnel with the car should use stones, skids and other items to jam the wheels in time, if there is a backward slip phenomenon, the rear of the car should be towards the hillside or the safety side, and turn on the headlights and emergency signals to attract the attention and avoidance of the front and rear vehicles.

There are many reasons for brake failure, one is the lack of necessary maintenance of the brake system, too many impurities in the brake master cylinder, poor sealing, vacuum booster pump failure, excessive dirt of brake oil or air resistance after the mixed use of several brake fluids, oil leakage of the brake master cylinder or sub-cylinder, air leakage of the gas tank or pipeline interface; The second is the failure of the parts due to improper operation, such as long-term downhill will cause the brake pads to rub and heat, the brake hub to carbonize, and the brake function to completely fail; Third, due to serious overload, under the action of gravitational acceleration, the inertia of vehicle movement is increased, which directly leads to brake failure. What should a novice do if the brakes fail while driving? 1.

Control the direction according to the road conditions and vehicle speed, disengage the high-speed gear, and at the same time quickly empty the fuel and shift the high-speed gear into the low-speed gear. In this way, the engine will have a lot of traction resistance and the speed of the vehicle will be reduced rapidly. In addition, the handbrake should be used in conjunction with the low-speed gear shift, but it should be noted that the handbrake should not be tightened or pulled too slowly.

If it is pulled too tightly, it is easy to make the brake disc "lock", and it is likely to damage the transmission parts and lose the braking ability; If it is pulled too slowly, the brake disc will wear and ablate and lose its braking effect. 2.Use the bumper, carriage and other rigid parts of the car to rub and collide with natural obstacles (rocks, trees or soil slopes) on the side of the road to achieve the purpose of forcibly stopping and getting out of danger, and reduce the accident loss as much as possible.

3.If the brakes fail when going uphill, you should reduce to the middle and low gear in time to maintain enough power to drive up to the top of the hill and stop. If you need to park on a half-slope, you should keep the forward low gear, tighten the hand brake, and the personnel with the vehicle should use stones, skids and other objects to jam the wheels in time.

If there is a backward slippage, the rear of the car should face the hillside or the safety side, and the headlights and emergency lights should be turned on to attract the attention of the vehicles in front and behind. 4.When the downhill brake fails and the speed of the vehicle cannot be controlled by the mechanism of the vehicle itself, the driver should decisively use natural obstacles, such as rocks and trees on the side of the road, to cause resistance to the car.

If you can't find a suitable terrain or object to use for a while, in an emergency, you can move one side of the car closer to the side of the mountain, and gradually reduce the speed of the vehicle by rubbing to increase the resistance. 5.When the vehicle is descending a long slope or a steep slope, the vehicle should apply the brakes regardless of whether there is a situation or not.

It can not only test the performance of the brakes, but also buy time to control the speed of the vehicle when the brakes are found to be out of order, also known as predictive braking.

The braking effect is significantly reduced, often the brakes are stepped on and can not be stopped immediately, and continue to walk far forward to stop, this may be the car's braking system failure, this is the most terrible fault in driving, often easy to form traffic accidents, to do emergency treatment, generally to see whether the brake pads are aging, whether the brake fluid is deteriorated, whether the tires are seriously worn.

The brake is a very important part of the car, controlling the speed of the car and whether it is moving or stopping. If there is a problem with the brakes of the car, it is a very terrible thing and can lead to serious consequences. Therefore, before every drive, checking the brakes is a very necessary thing to say.

So, what happens when checking the brakes to indicate that there is a problem with the brakes of the car? <>

First of all, if you feel weak when you step on the brakes, then there must be some problems in this situation, and the most likely situation is that the brake pads are very badly damaged, and the service life has been reached. It may also be due to insufficient brake fluid, or some water mixed in the brake fluid or air in the brake pipeline, etc., which may lead to a feeling of softness and weakness during braking. At this time, car owners must check the symptoms one by one, and only drive after ensuring that the brakes are correct.

The second situation is that there is an abnormal sound when the brakes are applied, and many car owners may not pay much attention to the sound when they step on the brakes, thinking that this may be a very normal phenomenon. However, the abnormal sound of stepping on the brakes may be caused by the very serious wear of the brake disc and brake pads, or it may be due to the poor quality of the brake pads. At this time, you must not be careless, you must go to the car's maintenance key shop for a comprehensive and systematic inspection, so that the brake system can be prevented only after all the mistakes have been made.

Finally, when the brakes are stepped on, the body of the car will be accompanied by shaking or deviation, which is often caused by the deformation of the brake disc or too much wear, and it is generally recommended to replace the brake disc. If the car deviates when the brakes are pressed, it may be because different specifications or different brands of brake discs are used on both sides of the wheel, resulting in different friction effects, and it may be because of oil leakage from the cylinder of one side of the brake. In this case, if you can't determine or solve it, you have to go to the 4S shop to ask a professional maintenance personnel to overhaul it.

The first point is that if there is a seepage of the sound of repentance, the bureau will say that Cong Zhengming has a problem with the brakes, the second point of the brakes, the value is not good, there may be a problem at this time, and the third point If there is, the phenomenon of jamming may also be a problem with the brakes.

There is a shaking phenomenon when the brake is pressed, the brake becomes soft, the feedback strength of the brake pedal is not clear, the position of the brake pedal changes, and there is an abnormal sound when braking.

If the car is not sensitive when stepping on the brakes or when stepping on the brakes makes a peculiar sound, it means that Tongwei has a certain stupid problem when the car rolls on, and we need to go to the repair shop immediately for repair.

1. The phenomenon of brake deflection is that when the brake is stepped on while driving, the steering wheel will deflect like one side.

The main reason for this phenomenon is that the force of the brake cylinder on the brake pad is unevenly distributed, resulting in serious eccentricity of the brake pad.

2. The brake pedal travel becomes longer, and when the car is used before, the brake response is very fast when the brake pedal is pressed. And now you need to step deeper to get braking power, which means that the brake pedal travel has become longer, which is what we often call soft brakes.

The reason for this is that the oil pressure of the main pump or sub-pump is insufficient, and there may be oil leakage.

The braking power comes from hydraulics.

The braking system of a car is simply a simple set"Hydraulic lines"To put it simply, every time you press the brake pedal, the force you exert is transmitted through the brake fluid to the piston of the caliper, and the piston then pushes the brake pads to squeeze the brake disc, creating friction to slow the car down.

So how to maintain the brake system?

1. Replace the brake pads according to the mileage.

2. Brake fluid should be replaced regularly.

3. New cars should pay attention to the running-in of the brake system.

4. The deviation of the car must be adjusted immediately when braking.

5. Don't step on the brakes frequently.

6. Try not to disassemble the brake system without permission.

Under what circumstances will the car's braking system fail?

There are many reasons why this braking system fails, such as:

1) Insufficient brake oil pressure. (lack of oil in the brake master cylinder, rupture of the brake line, leakage of oil pipe joints, and blockage of the oil circuit).

2) There is air in the braking system.

3) The free stroke of the brake pedal or the brake clearance is too large, and the brake shoe friction pad is not in good contact, and the wear is serious or there is oil stain.

4) The brake master cylinder, wheel cylinder piston and cylinder tube are worn or strained, and the leather bowl is aged and damaged.

If you brake, it will fail if you are too fast or if you have a steep terrain.

The braking effect is significantly reduced, often the brakes are stepped on and can not be stopped immediately, and continue to walk far forward to stop, this may be the car's braking system failure, this is the most terrible fault in driving, often easy to form traffic accidents, to do emergency treatment, generally to see whether the brake pads are aging, whether the brake fluid is deteriorated, whether the tires are seriously worn.

It may be that the car is very fast for a long time, and it may just fail.

If it is downhill or in a corner, the brakes will fail, or the speed of the car will be relatively fast.

It will fail when the brake pads are worn and when the temperature of the brake pads is too high.

In the case of car brake failure, it is generally caused by improper maintenance.

Brakes can fail if they are too frequent, and they can also fail if they are too fast.

The brakes of the car will not fail in the case of a handful of conditions, because he is very safe.

In the process of safe driving, normal braking will not fail.

Generally, when someone does something on your car's brakes, it will fail.

I think it's a special situation, don't you think so?

Many brakes are emergency brakes as a last resort, so you must pay attention to the braking skills. There are two situations discussed here, one is the vehicle without the ABS anti-lock braking system, and the old vehicles are basically like this. Xiangshu this kind of vehicle in the encounter with emergency braking, if the braking force is too large, it may make the car tires lock (the tires do not rotate at all), we can often see two long black brake marks on the road, this is the car without ABS when the tire and the ground friction traces, the tire due to emergency braking causes the tire to lock up and no longer rotate, but the huge inertia will make the car's tire rub against the ground and continue to slide forward, The violent friction between the tire and the ground caused a black mark on the rubber particles that had been rubbed off on the tire.

At this time, if you force the direction, it will often have serious consequences such as deviation, side slippage, tail flicking, or even rollover out of control.

The braking system is generally composed of two main parts: the brake control mechanism and the brake. The brake control mechanism produces the braking action, controls the braking effect, and transmits the braking energy to the various parts of the braking system, and the brake is the part that generates the force that hinders the movement or movement trend of the vehicle.

1. The brake pads are seriously worn, the brake pads are divided into two kinds of induction wires and without induction line, and the induction line will automatically turn on the circuit when the brake pads are worn to the limit position, and the fault light will be lit at this time. Brake pads need to be replaced;

2. The brake fluid level is too low, and the lack of brake fluid will be accompanied by an obvious lack of braking force, and even the loss of braking force will occur in serious cases. In this case, the warning light will turn on. As long as the brake fluid is replenished in time;

3. Oil leakage and false alarm of the brake system. It directly affects the technical performance of the car, resulting in the waste of lubricating oil and fuel, consuming power, affecting the cleanliness of the car, and causing environmental pollution. The fault light will be lit and the gasket or oil seal needs to be replaced.

If the braking system fails, it will affect the driving safety, and it is necessary to check and repair it in time. The braking system of the automobile is composed of a vacuum booster pump, a brake master cylinder, a brake cylinder, a brake pad, and a brake vertical disc. In order to ensure the safe driving of automobiles, increase the average driving speed of automobiles, and improve transportation productivity, special braking mechanisms are provided on various automobiles, and such a series of specialized devices are called braking systems.

The main function of the braking system is to slow down or even stop the moving car, to stabilize the speed of the car driving downhill, and to keep the stopped car still.