When the car is driving at high speed, the car arches, and the car arches one by one while the car i

I don't know what the arch means, if it is said that it is trembling at high speed, it is generally a problem of dynamic balance, first look at whether the aluminum profile of the tire is stained with a lot of mud, if there is a single place, it will also cause the tire to be unbalanced at high speed. If not, just go to a four-wheel dynamic balance, if not, you can only drive to the repair shop to check.

I've been driving for 16 years, so I'll give you an analysis, and I don't know what you mean by this arch. If the car is very old, it is difficult to say, if it is a new car, a good car, there are several reasons, the tires should be balanced, the steering wheel will tremble at a certain speed, and the speed will be reduced or disappeared when the speed is high or low. If you deviate and eat tires, it is recommended to do a four-wheel alignment.

When the spark plug reaches a certain degree of aging, there will also be snorting, or idling and shivering. It is recommended to replace the spark plugs. If the throttle is dirty, there will also be one for one arch.

The gasoline filter is very dirty, it is not easy to overoil, it is okay at low speed, it can't be oiled at high speed, or it will also snort. It is recommended to replace a good gasoline filter. The gasoline pump is about to break, and sometimes it will not be easy to ignite, or there will be no oil supply.

The aging and leakage of the steel wire sometimes occurs, and the fire will go out when it rains and splashes water, which is also the cause of the aging of the steel wire. Since you are not clear, it is recommended that you find an old driver and ask. It should be easy to find faults.

Give points, my hands are tired.

Carbon deposits, no.

This fault phenomenon has a lot to do with carbon deposition, focusing on checking the carbon deposition of the electronic throttle body, and excessive carbon volume of the electronic throttle will lead to unstable engine idling, not easy to start, and such fault phenomena as the car or stalling during driving. If there is carbon deposit, clean the carbon deposit first and then observe it during the test run.

Under normal circumstances, the opening of the throttle body of the vehicle should be 1 2 degrees, if the opening of 3 degrees or greater is reached, it will affect the normal use of the vehicle. For vehicles that drive in urban areas for a long time, it is recommended to clean the electronic throttle body every 15,000 kilometers, and run at high speed every month, and many vehicle failures are caused by carbon deposits.

If it is the lack of cylinder when the speed is increased, the situation you said may be that the oil supply is not good, please check the oil circuit.

Hello, it should be a lack of cylinders [There is a problem with the car, ask the car master. 4S shop professional technician, 10 minutes to solve. 】

Spark plug and ignition coil inspection [If you have a problem with the car, ask the car master. 4S shop professional technician, 10 minutes to solve. 】

Hello, it is recommended to check whether the ignition coil, spark plug and high-voltage wire are faulty, and then check the oil pressure. I hope I can help you, [If you have a problem with the car, ask the car master.] 4S shop professional technician, 10 minutes to solve. 】

First of all, let's explain the meaning of high-speed stability of the car: when the car is driving at a certain speed, it can ensure the stability of the body, the reverse is accurate, and the driver and passengers feel unsafe and uncomfortable when encountering crosswinds, uneven roads, merging lanes, and turning corners. This performance is directly related to the safety of the car and can be regarded as an important part of active safety.

There are many factors that affect the driving stability of the car, and the main factors are body shape, steering mechanism, suspension mechanism and body weight. Relatively speaking, the heavier and wider the body, the better the driving stability performance may be, because the lift has a relatively small impact on the heavier body, but it does not mean that the heavy model is necessarily more stable than the small weight, some European brands of mini cars, high-speed driving performance is very good, the key factor is still the shape and structural design. Due to the shape of the car body, the car will produce a certain lift force in the tail, which will reduce the grip of the rear tires, which will make the tail flutter and affect the stability of the car.

It is for this reason that a spoiler is added to the tail cloth of racing cars and sports cars, which is used to increase the rear downforce of the car when driving. Generally speaking, the smaller the drag coefficient, the better the driving stability performance, but not absolutely, mainly depending on the turbulence generated by the rear of the car. If the body design is not very aerodynamic, especially in sedans, it will generate a large lift at the rear, and when the speed exceeds a certain speed, the rear will feel fluttering.

There are many reasons for the so-called "fluttering": suspension problems. Although there is a certain reason for the suspension structure, a good suspension adjustment can completely make up for the lack of structure.

The suspension of the 206 is excellent, it absorbs small bumps well and smooths the body. Specifically, it absorbs vibrations, supports the car body, and keeps the car body balanced. Important reasons:

The aerodynamic design is flawed. According to a good design, the speed of the air flow under the car should be greater than the speed of the air flow above the body, so that the difference in air pressure will cause the air to press the car firmly to the ground (the so-called air downforce), and the faster the speed, the more obvious the effect. To achieve this effect, you can add a spoiler above the car and an air diffuser under the car.

In addition, crosswinds can also cause instability when driving. Other causes: Tire problems.

Tire pressure and tire quality will also affect the stability of driving to a certain extent. Whether the tires are balanced or not is also related to whether the vehicle is "fluttering", but for new cars or high-quality cars, such problems rarely occur.

There are several reasons why high-speed cars will drift: 1. The design of vehicle weight distribution is unreasonable, such as the early Beetle, the engine is rear-mounted, and it is easy to have wind drift. 2. The dynamic design of the vehicle airflow is unreasonable, and it cannot form a beneficial turbulence, or even a harmful turbulence.

3. In the case of high-speed driving from the vehicle itself, the car will flutter due to centrifugal force and wind resistance, and its impact is that the direction of the car is fluctuating during driving, the friction between the tire and the ground is reduced, and the braking distance is increased. 4. In fact, there is a large change in direction with a small steering wheel action when driving at high speed, which also requires the driver to have a good grasp of the direction at high speed.

The car will be worn out after a period of time, such as the suspension system, the ball joint of the steering system, etc., the tires, the toe, the slightest wear performance will decrease, and the dynamic balance of the tire will also be destroyed. It is recommended to check the adjustment, wheel alignment, toe-in, tire dynamic balance.

It should have something to do with your speed and weight.

The most direct relationship is the weight of the car, the heavier the car, the more stable.

Why do I feel like my vehicle is "floating" when driving on the highway?

The air-fuel ratio is poor or the supply is insufficient. Poor ignition performance and lead attack. The electronic control fuel injection engine is well beaten, and the electronic control system is abnormal. The engine is not properly tuned or assembled, or the engine itself is not in good mechanical condition. The injector is clogged or poorly atomized.

Hello, this is the result of poor oil supply, it is recommended to check the gasoline filter, oil pump, and oil pipe.

Reasons: 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 high-speed vibration, one is that the vibration is strong with the increase of vehicle speed, and the other is that the vibration occurs during a certain higher speed period, which 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 at this time, if the final test vibration speed is reached, the car does not shake, the cause of 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.

There is a high probability that this fault is four cars.

If the dynamic balance data of the wheel is incorrect, the dynamic balance of the next four wheels can be redone. It's best to do 00Generally, it is enough to do less than 10.

If the dynamic balance of the four wheels is still shaking, it is necessary to check whether the bearings of the lower four wheels are loose. Whether the ball end of the suspension system is loose.

All of the above are possible, I will say that you can see it directly, check the pressure shaft and oil ladle of the front wheel.

The crosswind effect also has to do with the weight of the body, and then there is the road condition.

The airflow means that the weight of your car's chassis is not suitable for acceleration, and if you don't slow down, you'll have to lie in the emergency room and shake all the time.

It's the airflow, which means that the weight of your car's chassis is not suitable for acceleration, and as long as you slow down, it won't shake back.

If you can feel whether the sound is from the chassis tires or the engine, or whether it is from the front or rear of the car, it is best to drive to the repair shop to check it.

Because the chassis of the car is too light, it is not recommended to drive at high speeds, because the car fluttering will increase the difficulty of handling and cause adverse consequences.

Hello, it is recommended that you pay attention to the driving speed to ensure driving safety, it is not recommended to speed, the problem you said may be related to the tire pressure. It may also be due to the overall weight of your car being too light. It is advisable to check the tire pressure.

When the wheels run up and run fast, you will feel that the wheels are turning backwards, because the speed of the car has reached a value, so that the distance between the temporary image of the previous moment and the next moment is obviously less than the distance between the two spokes, creating a visual illusion. This involves a problem of optical concepts – visual dwellings.

1. Definition of visual stay.

The phenomenon of visual persistence is the phenomenon that the vision produced by light on the retina remains for a period of time after the light stops working, and its specific application is the shooting and projection of movies. The reason is caused by the speed of reaction of the optic nerve. It is the basis for the formation and dissemination of animation, film and other visual **.

Vision is actually imaged by the lens of the eye, and photoreceptor cells sense light, and convert light signals into nerve currents, which are transmitted back to the brain to cause human vision. The photoreceptor cells rely on some photoreceptor pigments, and the formation of photoreceptor pigments takes a certain amount of time, which forms the mechanism of visual suspension.

Second, the principle of wheel reversal.

For example, if you use the valve of the tire as a marker, suppose the first picture you see is that the valve is at 12 o'clock, and if it is rotated to 1 o'clock after a second, then the second picture that the brain receives is the valve at 1 o'clock, and then at 2 o'clock. 3 points. So when you connect it, it feels like it's going backwards.

3. If you still don't understand, let's take cameras and clocks as inappropriate examples. One has only an hour hand and can display 12 different moments. Every 12 hours, we will find that time stops; If you shoot every 6 hours, you won't know if the clock is rotating clockwise or counterclockwise; I shoot every 3 hours, and I still don't know if it's 3 hours or 15 hours after 1 shot.

When the human eye sees an object, it is reflected that there is a pause in the retina, and the wheel is spinning at high speed, and the human eye cannot see clearly. When the rate of rotation coincides with the visual frequency of the human eye, the wheel we see seems to be stationary; When the rotational speed is higher than the visual frequency, the wheel turns forward; When the rotational speed is lower than the visual frequency, the wheel is spinning backwards.

The phenomenon of visual persistence, the retina of the human eye also takes time from imaging to the brain to respond, probably the object image stay time is about seconds, so if the round-trip period of the object is slightly greater than this time, it will look reversed. Another example is that the frequency of daily AC is 50Hz, periodic, so you can't see the incandescent lamp flashing.

In natural light, the spinning wheels can be observed directly with the naked eye without creating an illusion.

Only in a flickering light like a fluorescent lamp will there be a phenomenon that the landlord says.

When the light flashes for the first time (the camera starts to take the first picture, the same below), assume that the point A on the tire is on the top;

When the light flashed for the second time, the tire almost turned around, i.e., A almost returned to the original position, A was a little to the right of the position seen for the first time, and it looked as if A had moved a little to the right;

The lights continue to shine, and each A forms a continuous picture (like an animation), and to the naked eye it looks like the tires are turning to the right.

If the tires are spinning relatively fast, and the light flashes for the second time, A turns a little to the left of the original position, and it looks like A has moved a little to the left;

The result of the continuous flashing of lights is actually a tire that spins very quickly, and it looks like it is spinning very slowly.

The above example should not only be limited to a little more than one revolution, or almost one circle, no matter how many rotations, as long as the position of a at two adjacent flashes is in line with the above situation, the human eye will have an illusion.

The camera shows a computer screen flashing, sometimes even a black band moving up and down, similar to the one above. It doesn't matter if point A is just a scan line. The black belt we see is actually a gap between the two images.