High speed vibration problems? 50. High speed vibration problem?

What is the fault that causes the body to shake at high speeds?

1. The surface of the brake disc is uneven and the radial runout is large, which is caused by the uneven braking force or the position of the brake pad.

2. The tire pressure of the vehicle is too high, and the shaking of the vehicle is particularly large when passing through the uneven road at high speed, so the owner is easy to feel that the body is shaking and running off.

3. The tire is seriously worn, and the dynamic balance is too different, due to uneven wear or large dynamic balance, the tire will jump at high speed, resulting in the body shaking.

4. Engine problems, generally caused by oil or ignition, vehicles at high speed and high load, oil and ignition determine the power, if one of them travel abnormally, it will lead to the engine weakness and shaking.

What to do:

1. Check the tire pressure before high-speed driving, it is recommended that the tire pressure in summer should not be too high, it can be appropriately reduced, and the tire pressure in winter can be appropriately increased, but it is best not to exceed.

2. For the situation of deviation or abnormal tire wear, the four-wheel alignment can be used to solve the problem, and the four-wheel alignment can be carried out regularly to check whether the vehicle mechanism is normal.

3. Go to a regular gas station to refuel, do not use inferior engine oil or fuel, which will damage the engine fuel system and lubrication system, and you can also add clean fuel additives to the fuel tank to achieve the effect of removing carbon deposits.

High-speed vibration focuses on checking the transmission parts, and the dynamic balance is done, just look at the half-shaft transmission shaft or something.

Body vibration is indeed common when driving at high speeds, and the following is an inventory of the causes of vibration, I hope you will understand.

Method steps.

The surface of the brake disc is uneven.

In this way, when braking, the contact between the brake pads and the brake disc is loose and tight, and the braking force is sometimes large and sometimes small, resulting in body vibration, which is generally obvious when the brakes are lightly stepped on.

The wheel alignment data has a large deviation.

In particular, the positioning angle of the front wheels is out of alignment, and the toe is too large. In this case, it feels that the vehicle is difficult to control when accelerating, and the shaking is generally not large, but it is awkward.

Tire pressure is too high or too low.

The higher the tire pressure is too high, the higher the speed, the more the body will vibrate. If the tire pressure is too low, the body will feel flickering and deviate.

Abnormal tire wear.

Due to wheel alignment or rim deformation, the tire surface is worn inconsistently, causing the body to vibrate while driving.

Rim deformation. The tires are mounted on the rims, and the rims are deformed even if the tires are deformed, resulting in uneven surfaces and inaccurate wheel dynamic balance, and vibrations when running.

The shock absorber failed.

If the shock absorption fails, the impact on the tires when running at high speed will be transmitted to the car body without attenuation, causing the vibration of the entire body.

Tire dynamic balance problems.

For example, after tire repair, wheel rim deformation, abnormal tire wear, tire piercing big nails or entrainment of large stones, etc., will destroy the dynamic balance of the tire.

Automatic transmission lock-up clutch issues.

After the torque converter is locked, the engine power output and the gearbox input become a rigid connection, if it cannot be released in time when the brake is pressed, the gearbox will drag the engine back, causing vibration.

High-speed resonance is generally a propeller shaft problem.

The reasons for the vibration of high-speed vehicles are: 1. The surface of the brake disc is uneven; 2. The deviation of wheel alignment data is large, especially the front wheel alignment angle is inaccurate, and the toe is too large; 3. If the tire pressure is too high or too low, the higher the speed of the vehicle if the tire pressure is too high, the more severe the body will vibrate, and the tire pressure will be too low, and the body will feel flickering and deviating; 4. Abnormal tire wear; 5. The rim is deformed, the tire is installed on the rim, and the rim is deformed so that the tire is also deformed, resulting in uneven surface and inaccurate dynamic balance of the wheel, and vibration when running; Xunhu stove 6, shock absorber failure, running at high speed in the face of the impact of the tire will be transmitted to the body without attenuation, causing the vibration of the entire body.

1. The positioning angle of the front wheel is inaccurate, and the toe is too large;

2. The air pressure of the front forum is too low or the tire is unbalanced due to repair and other reasons;

3. The front spokes are deformed or the number of tire screws is different;

4. The installation of transmission system parts is loose;

5. The transmission shaft is bent, the dynamic is unbalanced, and the front shaft is deformed;

6. The shock absorber fails, the stiffness of the front leaf spring is inconsistent, and the frame is deformed.

Diagnosis and elimination of high-speed vibrations:

1. There are two situations of Gaoling banquet speed vibration, one is that the vibration is strong with the increase of vehicle speed, and the other is that the vibration occurs in the ruler section at a higher speed, and causes the steering wheel to shake. When judging, the drive axle is erected first, the front wheel is plugged with safety plug blocks, the engine is started and the high-speed gear is gradually shifted, so that the drive wheel reaches the final test vibration speed. If both the body and steering wheel shake at this time, it is caused by vibrations caused by the drivetrain.

Because the front axle is in a stationary state, if the final vibration speed is reached, the car does not shake, the cause of the vibration is the fault of the front axle part of the car;

2. Check whether the positioning angle of the front wheel and the front wheel meet the requirements, and if it is inaccurate, it should be adjusted;

3. Set up the front axle to test the wheels, check the static balance of the wheels and whether the tires are too deformed. If necessary, a good wheel can be changed for comparative experiments.

1. The tire pressure of the car tire is too high: if the tire pressure of the car tire is too high, the degree of the vehicle's jump will be relatively large when passing through the bumpy road, and it will be easy to make the body tremble at high speed, increasing the probability of puncture. Generally speaking, it is advisable to have a tire pressure on the left and right of a car tire.

2. Serious wear of automobile tires: If the tire of the car is seriously worn, the tread pit is uneven, and the body shakes when the car runs at high speed, and the tire should be repaired or replaced in time.

3. Deviation of tire dynamic balance: If the dynamic balance weight of the vehicle is displaced or falls off, the tire will be out of balance, resulting in the symptoms of shaking when the car is driving at high speed, and the dynamic balance weight of the car should be checked and replaced.

4. Inaccurate four-wheel alignment: If Zhentongguo car does not carry out four-wheel alignment after replacing the tires, then the car will have problems such as shaking, increased fuel consumption, and serious tire wear, which should be re-aligned with the four wheels of the car.

Common causes of divergent wild shake in the body of the car at high speed:

1. The positioning angle of the front wheel is inaccurate, and the toe is too large;

2. The air pressure of the front forum is too low or the tire is unbalanced due to repair and other reasons;

3. The front spokes are deformed or the number of tire screws is different;

4. The installation of transmission system parts is loose;

The reasons for the vibration of high-speed vehicles are: 1. The surface of the brake disc is uneven; 2. The deviation of wheel alignment data is large, especially the front wheel alignment angle is inaccurate, and the toe is too large; 3. If the tire pressure is too high or too low, the higher the speed of the vehicle if the tire pressure is too high, the more severe the body will vibrate, and the tire pressure will be too low, and the body will feel flickering and deviating; 4. Abnormal tire wear; 5. The rim is deformed, the tire is installed on the rim, and the rim is deformed so that the tire is also deformed, resulting in uneven surface and inaccurate dynamic balance of the wheel, and vibration when running; Xunhu stove 6, shock absorber failure, running at high speed in the face of the impact of the tire will be transmitted to the body without attenuation, causing the vibration of the entire body.

Causes of body vibration at high speed: 1. The surface of the brake disc is uneven; 2. The deviation of wheel alignment data is large, especially the front wheel alignment angle is inaccurate, and the toe is too large; 3. The tire pressure is too high or too low, the higher the speed of the car is too high, the more severe the car is sleepy and the body is shocked, and the tire pressure is too low, and the body will feel flickering and deviating; 4. Abnormal tire wear; 5. The rim is deformed, the tire is mounted on the rim, and the rim is deformed so that the tire is also deformed, resulting in uneven surface and inaccurate wheel dynamic balance, and vibration when running; 6. The shock absorber fails, and the impact of the tire on the ground running at high speed will be transmitted to the car body without attenuation, creating the world's dust into the vibration of the entire body.

4 years ago - After running 58,000 kilometers at high speed to 120, the steering wheel is a little shaky, stepping on 160 shakes even more, and when you get to 120, it doesn't shake all the time after 160 is more serious! a. Check the dynamic balance of the tire first, and then check whether the transmission shaft has been checked.

Answer: First, there are two situations of high-speed oscillation, one is that with the increase of vehicle speed, the oscillation is gradually strong; The second is oscillation at a certain higher speed. And cause the steering wheel to shake, first set up the drive axle, the front wheel plus the safety plug block, start the engine and chase.

Erect the drive axle, add safety plug blocks to the front wheels, start the engine and gradually shift into the high-speed gear, so that the driving wheels reach the oscillation speed. If the body and steering wheel are shaking at this time.

Check whether the positioning angles and toe of the front wheel meet the requirements, and adjust them if they are out of alignment.

Set up the front axle and test the wheels to check the static balance of the wheels and whether the tires have been deformed.

In the process of high-speed operation of EMUs, the locomotive will inevitably produce mechanical vibration. On the one hand, vibration has a large loss to the strength of the parts and components of the track and locomotive itself that are walked, and is easy to cause fatigue damage, on the other hand, it is necessary for vehicle transportation.

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Answer: Hello, the fault cause of the shaking of the vehicle at high speed is the damage of the locking piece of the torque converter, which causes the locking combination to be unstable, causing the locking shake and breaking into the car during driving. The repair plan can be refurbished or replaced according to the degree of damage to the torque.

There are many reasons for the original caution involved in high-speed body shaking. The more common reasons are as follows: 1. Tire problems:

The main problem with tires is abnormal tire pressure or severe tire wear. If the tire pressure is too high or too low, the difference in tire pressure between the four tires will cause the body to shake at high speeds. Here's an example:

Under normal circumstances, the front tire pressure is usually the rear tire pressure is about the same. If the tire pressure of the right front wheel is the pressure of the left rear tire, due to the difference in air pressure, the energy absorption and shock absorption ability of the wheel search Xiao tire is inconsistent, and the body shakes when driving at high speed. 2. The car needs to be dynamically balanced or four-wheel alignment

It is important to note that dynamic balancing and wheel alignment are two different things.

The following are the reasons for the shaking of the high-speed driving body: 1. The positioning angle of the front wheel is inaccurate, and the toe is too large. 2. The air pressure of the front tire is too low or the tire is unbalanced due to repair and other reasons.

3. The front spokes are deformed or the number of tire screws does not match. 4. The installation of transmission system parts is loose, the transmission shaft is bent, the power is unbalanced, and the shaft is deformed. 5. The shock absorber failed, and the stiffness of the front leaf spring was inconsistent.

At higher speeds, there is oscillation, and cause the steering wheel to shake, you can first set up the drive axle, the front wheel plug safety plug block, start the engine and gradually change into the high-speed gear, so that the drive wheel reaches the final test oscillation speed, if the body and the steering wheel are shaking at this time, it is the oscillation caused by the transmission system.