How to judge the quality of automobile shock absorbers, how to judge the quality of automobile shock

The shock absorber is a vulnerable part in the process of car use, and the work of the shock absorber will directly affect the stability of the car and the life of other parts, so the shock absorber should always be in good working condition. The following methods can be used to verify that the shock absorber is working well:

1. Make the car stop after driving 10 kilometers on the road surface with poor road conditions, touch the shock absorber shell with your hands, if it is not hot enough, it means that there is no resistance inside the shock absorber, and the shock absorber does not work.

2 Press the bumper firmly and then release, if the car has 2 3 jumps, then the shock absorber is working well.

3 When the car is driving slowly and braking urgently, if the car vibrates violently, it means that there is a problem with the shock absorber.

4 remove the shock absorber to stand upright, and clamp the lower end connecting ring on the vice, pull and press the shock absorber rod several times, there should be stable resistance at this time, the resistance of pulling up and recovering should be greater than the resistance when pressing down, if the resistance is unstable or there is no resistance, it may be that the shock absorber is lacking oil inside or the valve parts are damaged, and the parts should be repaired or replaced.

As a car owner, do you know how to distinguish between good and bad car shock absorbers? Check it out.

If there is too much, there are problems, such as shock absorption scars, tilting, that is, the distance between the shock absorption and the tire on both sides is not the same, twisting, etc.

1. Check the leakage. The shock absorber is to work in the way of hydraulic pressure, and the hydraulic oil is naturally very important for the shock absorber, only under the action of hydraulic oil, the shock absorber can play its due effect, but under normal circumstances, the surface of the shock absorber should be dry and clean, if we check the shock absorber when we find that its appearance is wet, and the upper part of the piston rod even has oil leakage, it proves that the shock absorber has a problem.

2. Listen to the sound of the wheels. To detect the quality of the shock absorber, the best way is to drive the car to the bumpy road to test, the shock absorber is normal, although the car has bumps but can also clearly feel a cushioning force, and the shock absorber is broken, people sitting on the car bumps will be brighter and more visible, and the wheels will make a "pop" sound when they are bumping up and down, which indicates that the shock absorber has not worked and needs to be replaced.

3. Steering detection. Sometimes the shock absorber is only broken one, and the car will not feel too obvious when going straight, but once it is turned, we can feel that the inclination of the car body will obviously increase, and in some slightly faster turning processes, there will even be side slip, in this case, the shock absorber may not be completely damaged, but its damping force is also significantly reduced, and it can no longer suppress the compressive force generated by the car suspension spring.

4. Measure the temperature by hand. Drive the car to a bumpy road for a period of about 10 kilometers, then stop the car, touch the temperature of the shock absorber shell with your hands, under normal circumstances, the shock absorber because of the friction, you should guess that there will be a little warm feeling, if we touch it and find that the shell is cold, then it proves that the shock absorber on this road is not working, at this time it is necessary to see whether the shock absorber is broken or there are other reasons!

1. Check the leakage. The shock absorber is to work in the way of hydraulic pressure, and the hydraulic oil is naturally very important for the shock absorber, only under the action of hydraulic oil, the shock absorber can play its due effect, but under normal circumstances, the surface of the shock absorber should be dry and clean, if we check the shock absorber when we find that its appearance is wet, and the upper part of the piston rod even has oil leakage, it proves that the shock absorber has a problem.

2. Listen to the sound of the wheels. To detect the quality of the shock absorber, the best way is to drive the car to the bumpy road to test, the shock absorber is normal, although the car has bumps but can also clearly feel a cushioning force, and the shock absorber is broken, the bumpy feeling will be more obvious when people sit on the car, and the wheels will make a "bang" sound when they are bumping up and down, this situation indicates that the shock absorber has not worked, and needs to be replaced.

3. Steering detection. Sometimes the shock absorber is only broken one, and the feeling will not be too obvious when the car goes straight, but once the steering, we can feel that the inclination of the car body will obviously increase, and in some slightly faster turning processes, there will even be side slip, in this case, the shock absorber may not be completely damaged, but its damping force is also significantly reduced, and it can no longer suppress the compressive force generated by the car suspension spring.

4. Measure the temperature by hand. Drive the car to a bumpy road for a period of about 10 kilometers, and then stop the car as follows, touch the temperature of the shock absorber shell with your hands, under normal circumstances, the shock absorber because of the friction, there should be a little warm feeling, if we touch it and find that the shell is cold, then it proves that the shock absorber on this road is not working, at this time it is necessary to see whether the shock absorber is broken or there are other reasons!

The car shock absorber is first visually inspected to see if there is an oil leak.

The most direct way to judge the quality of the shock absorber is to stop the shock absorber and check whether the shock absorber is leaking. The undamaged segment dust shock absorber is clean and free of oil stains, and if the shock absorber is damaged, there will be oil stains.

The performance of the shock absorber can be judged according to four aspects: temperature inspection, oil leakage observation, ride feeling, and monomer test. The shock absorber is a vulnerable part in the process of car use, and the quality of the shock absorber will directly affect the smoothness of the car and the life of other parts, so the shock absorber should always be in good working condition. The following is a detailed introduction to the judgment method:

1. Temperature check: make the car stop after driving 10 kilometers on the road surface with poor road conditions, touch the shock absorber shell with your hands, if it is not hot enough, it means that there is no resistance inside the shock absorber, and the shock absorber does not work. 2. Oil leakage observation

When the shock absorber is working, the oil mist evaporated by the high-temperature oil is often attached to the cylinder wall, and the dust on the road adheres to it to form a layer of oil sludge, which is a normal situation and is not caused by oil leakage. If there is not only oil sludge, but also oil bursts or oil droplets on the cylinder wall and lower ring of the shock absorber, it means that the shock absorber is leaking. 3. Ride feeling:

Under normal circumstances, after the vehicle drives through the bulge or pit at a moderate speed, the body will inevitably produce bump vibration, when the shock absorber fails or the shock absorber is normal and the spring is soft, the vibration of the bright cherry body is large, if the vibration does not exceed for a long time, it can be considered that the shock absorber damping efficiency decreases or fails, and vice versa. 4. Monomer test: remove the shock absorber under the pin bush from the car to stand upright, and clamp the lower end of the connecting ring on the vice to pull and compress the shock absorber rod several times, at this time there should be stable resistance, the resistance to pull up and restore should be greater than the resistance when pressing down, if the resistance is unstable or there is no resistance, it may be that the shock absorber is lacking oil inside or the valve parts are damaged, and the parts should be repaired or replaced.

The way to distinguish the good and bad shock absorber is as follows: 1. Check the leakage, the shock absorber is to use hydraulic pressure to work, and the hydraulic oil is naturally very important for the shock absorber, only under the action of hydraulic oil, the shock absorber can play its due effect, under normal circumstances, the surface of the shock absorber should be dry and clean, if the shock absorber is found to be wet when inspecting the shock absorber, and there is even oil leakage on the upper part of the piston rod, it proves that the shock absorber has a problem. 2. Guess the best way to listen to the sound of the wheels, the best way to detect the quality of the shock absorber is to drive the car to the bumpy road to test, the shock absorber is normal, although the car has bumps but can also clearly feel a cushioning force, if the shock absorber is broken, the bumpy feeling of people sitting on the car will be more obvious, and the wheels will make a "bang" sound when they are bumping up and down, which indicates that the shock absorber has not worked and needs to be replaced.

3. Steering detection, sometimes the shock absorber is only broken one, and the car will not feel too obvious when going straight, but once you can feel the side inclination of the car body when you turn it will obviously increase, and in some slightly faster turning processes, there will even be side slip, in this case, the shock absorber may not be completely damaged, but its damping force has also been significantly reduced, and it has been unable to suppress the compressive force generated by the automobile suspension spring. 4. Measure the temperature by hand, drive the car to a bumpy road for a period of about 10 kilometers, and then stop the car, touch the temperature of the shock absorber shell with your hands, under normal circumstances, the shock absorber should have a little warm feeling because of the friction, if you touch the shell and find that the shell is cold, it proves that the shock absorber on this road has not played a role in Qingqiao, at this time you have to see if the shock absorber is broken or there are other reasons. 5. You can also directly observe the appearance of the shock absorber, and there are dust cylinders, rubber pads and other things on the shock absorber, although these damage will not affect the normal use of the shock absorber, but in the process of driving the car, there will be some abnormal noises, which are also easy to affect the judgment of other faults of the vehicle, and it is best to repair it immediately if it is broken.

The way to distinguish the quality of the shock absorber is: 1. Make the car stop after driving 10 kilometers on the road surface with poor road conditions, touch the shock absorber shell with your hands, if it is not hot enough, there is no resistance inside the shock absorber, and the shock absorber does not work; 2. Press hard to stare down the bumper and then release, if the car has 2 to 3 jumps, it means that the shock absorber is working well; 3 When the car is driving slowly and braking urgently, if the car vibrates violently, it means that there is a problem with the shock absorber. How the shock absorber works:

The piston in the shock absorber moves up and down, the oil in the shock absorber cavity repeatedly flows from one cavity through different pores into another cavity, the friction between the hole wall and the oil and the internal friction between the oil molecules form a damping force on the vibration, and the automobile vibration energy is converted into oil heat energy, which is absorbed and dissipated into the air by the shock absorber.

Shock absorbers"The term is a common term within the automotive chassis industry, and an automotive shock absorber is actually a vibration damper. Shock absorbers are used not only in suspension but also in other locations in automobiles. For example, it is used in cabs, seats, steering wheels, etc., and can also be used as a buffer on vehicle bumpers.

In the suspension system, due to the vibration of the elastic element by the impact, in order to improve the smoothness of the car, the shock absorber is installed in parallel with the elastic element in the suspension, and the shock absorber is mostly a hydraulic shock absorber in the automobile suspension system, and its working principle is that when the frame (or body) and the axle are vibrated and there is a relative movement, the piston in the shock absorber moves up and down, and the oil in the shock absorber cavity flows into another cavity repeatedly from one cavity through different pores. At this time, the friction between the hole wall and the oil and the internal friction between the oil molecules form a damping force on the vibration, so that the vibration energy of the automobile is converted into oil heat energy, and then absorbed and dissipated into the atmosphere by the shock absorber. When the cross-section of the oil channel and other factors remain unchanged, the damping spring force increases and decreases with the relative motion speed between the frame and the axle (or wheel), and is related to the oil viscosity.

Shock absorbers and elastic elements are responsible for the task of slowing impact and damping vibration, and excessive damping force will deteriorate the elasticity of the suspension and even damage the shock absorber connections. Due to the contradiction between the elastic element and the shock absorber, it is necessary to adjust the surface.

Detection method. 1.Make the car stop after driving 10km on the road surface with poor road conditions, touch the shock absorber shell with your hands, if it is not hot enough, it means that there is no resistance inside the shock absorber, and the shock absorber does not work.

At this time, you can add appropriate lubricating oil, and then test, if the shell is hot, it is a lack of oil inside the shock absorber, and sufficient oil should be added; Otherwise, the shock absorber has failed.

2.Press the bumper firmly and then release, if the car has 2 or 3 jumps, the shock absorber is working well.

3.When the car is driving slowly and braking urgently, if the car vibrates violently, it means that there is a problem with the shock absorber.

4.Dismantle the shock absorber to stand upright, and clamp the lower end of the connecting ring on the vice, pull and press the damping rod several times, at this time there should be stable resistance, pull up (recovery) resistance should be greater than the resistance when pressing down, if the resistance is unstable or no resistance, it may be that the shock absorber is lacking oil inside or the valve parts are damaged, and the parts should be repaired or replaced.