When braking the car, if the front wheel brake on one side is working, it will cause the car and it

The meaning of choosing question B is that only one wheel has an effect, so when braking, the other side will run forward due to inertia, and it will deviate.

Depending on the topic, you should choose A. Brake bias is called side slip, and exercise bias is called deviation.

When braking, the rear wheel may be locked and the tail may slip and flick, and the front wheel may be locked and the steering ability may be lost.

During the driving of the car, the brakes may have the wheels locked, which is due to the effect of the braking torque, stop turning and drag on the road surface, that is, the tires do not turn, and the car is like a brick sliding on the road. Wheel locking causes the wheels to be completely sliding friction with the ground, the front wheel locking causes steering failure, and there is no way to drive in the desired direction, but in the direction of low force, while the rear wheel locking is the so-called drift.

Wheel locking due to the loss of the ability to resist the action of lateral forces, there is a possibility of sideslip and the consequences of the car out of control, when the wheels are locked to release the brake pedal, or the car with ABS system can effectively prevent this from happening.

Work process. In the ABS, a speed sensor is placed on each wheel, and a signal about the speed of each wheel is fed into the electronic control device. The electronic control device monitors and judges the motion status of each wheel according to the signal input from each wheel rotation sensor, and forms the corresponding control instructions.

The hydraulic solenoid valve everywhere is not energized and is in a closed state, the electric pump is also not energized to operate, the brake pipeline of the brake master cylinder to the brake wheel cylinder is in the state of communication, and the brake pipeline of each brake wheel cylinder to the liquid reservoir is in a closed state, the braking pressure of each brake wheel cylinder will change with the output pressure of the brake master cylinder, and the braking process at this time is exactly the same as the braking process of the conventional braking system.

During the braking process, when the electronic control device determines that the wheel tends to lock according to the wheel speed signal input by the wheel speed sensor, ABS enters the anti-lock braking pressure adjustment process.

For example, when the electronic control device judges that the right front wheel tends to lock, the electronic control device makes the liquid inlet solenoid valve that controls the braking pressure of the right front wheel energized, the right forward fluid solenoid valve turns into a closed state, the brake fluid output of the brake master cylinder no longer enters the right front brake wheel cylinder, and the electronic control device makes the right forward solenoid valve and the outlet solenoid valve all power off, and the liquid inlet solenoid valve turns into an open state.

Make the liquid solenoid valve turn into a closed state, also make the electric pump energized operation, send brake fluid to the brake wheel cylinder, the brake fluid output by the brake master cylinder and the brake fluid pumped by the electric pump all enter the right front brake wheel cylinder through the right forward fluid solenoid valve in the open state, make the braking pressure of the right front brake wheel cylinder increase rapidly, and the right front wheel begins to decelerate and rotate again.

ABS by making the braking pressure of the wheel that tends to lock cycle through the process of holding-decreasing-increasing, and the sliding rate of the wheel that tends to lock is controlled in the vicinity of the slip rate of the peak adhesion coefficient, in this ABS, there is a pair of inlet and outlet solenoid valves corresponding to each brake wheel cylinder, which can be controlled separately by the electronic control device, therefore, the braking pressure of each brake wheel cylinder can be adjusted independently, so that the brake locking phenomenon does not occur in the four wheels.

The front wheels are locked first, the rear wheels are locked first, and the front and rear wheels are locked at the same time. The third case is only a critical state, which only occurs at a certain point, and in fact there are only the first two states.

Skidding, brakes can't be braked, severe rollover.

Most cars are equipped with two independent braking systems: a foot-controlled service brake (foot brake) system and a hand-controlled parking brake system.

1. Yiche braking systemThe wheel brakes used in various types of automobiles can basically be divided into two categories, namely drum and disc. The difference between them is: in the friction pair of the former, the rotating element is the brake drum, and the working surface is a cylindrical surface; In the friction pair of the latter, the rotating element is a disc-shaped brake disc, and the working surface is a two-end face.

The fixed element in the friction pair of the drum brake is mostly a brake shoe with a friction pad. According to the different forms of brake shoe opening devices, drum brakes can be divided into two types: hydraulic drive wheel cylinder opening type and pneumatic drive cam opening type.

Disc brakes, the transmission mechanism is mostly hydraulic. According to the different structures of its fixed friction elements, it can be divided into caliper disc type, which is suitable for front wheel brakes, and some automobile front and rear wheel brakes are disc brakes. The car's braking system is a disc type for the front wheels and a drum type for the rear wheels.

2. Parking brake systemThe parking brake is generally installed at the rear end of the transmission output shaft, so it is also called the first braking system. There are also a few models where the parking brake is not located at the rear of the transmission, but is linked to the rear brake. The parking brake is mainly used when the car is parked, and can also be used as auxiliary braking in an emergency.

In addition, some cars (mainly diesel vehicles) are equipped with exhaust brakes. This kind of brake is to increase the exhaust resistance of the engine to increase the rotational resistance of the engine crankshaft, and hinder the rotation of the driving wheel through the transmission mechanism, so as to achieve the purpose of deceleration. It is mainly used as an auxiliary brake when the car is going down a long slope to reduce the burden on the wheel brakes.

First, the brakes are not working. It may be that the transmission pipe that provides the pressure is out of pressure, and the Sakura mold is unable to provide braking force in time due to the inability to slow down the spine. Second, the brakes are continuously stepped on, and the pedal position rises, and there is a sense of sinking. This is an oil spill. 3. Tremble when you apply the brakes.

These common faults are brake failure, braking failure, braking distance extension, tire grip reduction, tire friction reduction, these are possible changes to the bright dynamic core width failure.

Common faults include the failure of the car's braking function, the car's braking is slippery, the car's braking function is blind and can slowly rot limbs, the car's brake parts are damaged, and the car's brake deviation.

When the braking force of the disc brake is insufficient, the following methods can be used to solve it:

1. Change the brake pad material.

It can be replaced with a slightly softer brake pad material, so that the friction coefficient is relatively improved, and the braking force is increased.

2. Remove foreign objects in the chip removal groove of the brake pad.

If the chip groove of the brake pad is covered by foreign matter, the key will lose the effect of discharging dust and scraping water during braking, and the braking force will be reduced.

There is noise during braking.

When braking, if there is a "squeak, squeak" noise, the following methods can be used to eliminate it:

1. Between the piston of the brake body and the brake lining, add an anti-noise sheet to form an inclination on the piston. So as to ensure the flexible contact between the brake pad and the brake disc during braking, so that the brake pad can be violently coincidental without abnormal noise under normal wear and tear.

2. Choose a brake pad material with softer material and less density.

3. When braking, the brake pad moves to one side, and there may be an impact sound. This is due to the large gap between the brake pad and the clamp body, which can be eliminated by soldering plating. However, it should be noted that the solder should be plated on the side opposite to the direction of travel to prevent failure under the action of braking force.

The braking device is a major factor affecting the safety of the car. () BTG.

a.That's right. b.Mistake.

Correct Answer: a

a.If the braking force exceeds the adhesion, the wheels will lock the brakes and the wheels will lose control and a traffic accident will occur.

b.There is a risk of a traffic accident when the front brake is locked.

c.There is a risk of traffic accidents when the vehicle is out of control when the rear wheel brakes and holds the shirt and dies.

It can effectively prevent wheel brake locking during braking, and can improve the safety of the vehicle during braking.

Correct answer: There is a risk of a traffic accident due to loss of control of the vehicle in the state of rear collapse only in the locked-up state of wheel brakes. ABS can effectively prevent wheel brake locking during braking and improve the safety of the vehicle during braking.

The braking system usually has too little clearance, resulting in the brake disc and the brake disc rubbing all the time, resulting in noise or overheating of the brake disc.

There will be many serious fault problems, such as the pedal does not rise when pedaling, there is no resistance, it may be caused by the lack of brake fluid, there may be oil leakage at the joint, or it may be damage to the parts.

Usually, these faults occur: when the brake plate is pressed, the pedal does not rise and there is no resistance, the brake is easy to deviate, and the brake is easy to lock.