What should I do if there is noise in the vehicle? What to do if there is noise in the car?

Automobile noise is divided into three types according to the noise source: tire noise, engine noise and road noise, among which the specific manifestations of engine noise are: thick mechanical sound and air intake system noise transmitted into the cockpit through the car's eye fender, hood and fire barrier. Wind noise is manifested in the following ways:

The sound generated by the air passing through the gaps in the body of the vehicle when the vehicle is moving, the faster the driving speed, the more noticeable the sound. As the name suggests, tire noise is the noise caused by tire tread and air flow, and the factors that cause it are not only the quality of the tires, but also have a lot to do with road conditions.

The door is the top priority to improve the overall sound insulation quality of the car, and the sound insulation effect of many vehicles is not good, a big reason is that the sound insulation treatment of the door is not in place. And we want to improve the sound insulation effect of the door is not impossible to achieve, as long as we go to the repair factory to install some door panel sound insulation cotton can have a good effect.

Although the hood has little effect on the sound insulation of the car, it is not completely without effect. If the hood sound insulation pad of your car itself is thick enough, there is no need to install it again, and if your car does not have a hood sound insulation pad, then it is not impossible to consider installing one.

Many people don't expect that the trunk will also be associated with the noise in the car, because of the structural design of the car, the noise will resonate again in the trunk when the body vibrates, so if the trunk sound insulation is not good, the sound insulation of the whole vehicle will not be good. And the way to improve the sound insulation of the trunk is not difficult, just stick the prepared sound insulation cotton and shock absorber plate to the bottom of the trunk.

The impact of tire noise on the sound insulation of the car is self-evident, especially when the vehicle is driving at high speed, so it is also necessary to successfully reduce noise and improve the sound insulation of the wheels. The most effective way to improve the sound insulation of the wheels is naturally to replace the tires with a quieter effect, or to install shock absorbers or soundproof four-wheel sound attenuation kits at the sheet metal around the wheels.

Hello! Vehicle noise is divided into the following types:

1. Engine noise.

At the top of the list is naturally the abnormal engine noise, which is also the most obvious one in the car noise. Engine noise is divided into cold car squeak and hot car squeak. The abnormal sound of cold car refers to the abnormal sound from the engine compartment when the car is on, and it disappears automatically after the car is warmed.

This abnormal sound is likely to be because the car is parked for a long time, the lubricating oil basically flows back to the oil pan, the oil pump can not establish the oil pressure in the first time during the cold start, and the oil film is formed between the components, especially the valve inside the cylinder head (upper), which is not lubricated during the cold start, whether it is a hydraulic tappet or a mechanical rocker arm, there will be a certain valve clearance or due to the oil pressure is not enough to time the chain (with intelligent variable valve or valve lift system) fails to work normally to cause a clicking sound.

There are many reasons for the abnormal noise of the hot car, excluding its own factors, then the abnormal noise is likely to have some kind of fault, such as high oil viscosity, carbon deposits in the engine cylinder, valve leakage, etc. Therefore, if you notice that the engine noise is getting louder and louder, you should go to the repair shop for maintenance in time.

2. Tire noise.

Tire noise is present in every car, but the difference in sound magnitude is generally due to the air flow between the tire treads. Because tires are rubber products, they are easy to age and harden after a long time, and the noise can be imagined; The elasticity of the new tires is good, and it has better performance in terms of noise and comfort. If the tire noise is too high, you can check whether the tire is aging, and if necessary, you can replace it, and choose a tire with better comfort.

3. Wind noise. Wind noise, like tire noise, is present in every car, but there are several types of wind noise, one is the noise caused by the pressure change caused by the separation of the air flow around the body; The second is air leakage, or suction sound, which is the noise generated by the interaction between the inhalation of the cab and the body gap and the airflow around the body; The third is other noises, including cavity resonance. The faster you travel, the more wind noise will be.

Wind noise can be reduced by adding a seal.

4. Chassis noise.

Generally speaking, chassis noise is caused by a problem with the shock absorber, and the car as a whole will produce a loud noise when passing over uneven roads. At this time, it is necessary to check whether there is any abnormality in the shock absorber of the car, because the cause of the abnormal noise is likely to be a serious oil leak.

At this point, we have also introduced the basic noise of the car and how to deal with it, but if it is not the problem of wind noise and engine noise, then we can also try to make the whole car sound insulation work.

The best solution for automobile sound insulation materials to solve automobile noise: 1: sound insulation and shock absorption glue:

Metal and plastic sheets are used in the manufacture of every car, which resonates during driving and causes a lot of low-frequency noise. The original car factory will also deal with some vibration sound sources, but it is far from enough, so whether it is a high-end car or a low-end car, there are no installation and shock absorption materials. Two:

Sound-dampening and heat-insulating cotton: steam.

Solution: Some high-grade sound-absorbing foam can be added to the engine cover, which can not only suppress the vibration caused by the hood, but also absorb a lot of noise, and the effect is obvious. 2. Tire noise:

Tire noise is the vehicle at high speed, the tire and the road friction generated, depending on the road conditions to determine the size of the tire noise, the worse the road conditions, the greater the tire noise, in addition to the asphalt road and the concrete road surface caused by the tire irritability is very different. Solution: Tire noise is structure-borne noise, and its main source is vibration, and the most reasonable solution is to control vibration.

Adding a damping plate and a sound-absorbing pad can solve road noise and tire noise well. 3. Wind noise: Wind noise refers to the pressure of the oncoming wind in the process of high-speed driving of the car has exceeded the sealing resistance of the door and entered the car, the faster the driving speed, the greater the wind noise.

Solution: Install or replace the door seal, because the seal is a rubber product, which will deteriorate after a long time, and the sound insulation and sealing effect will deteriorate. 4. Body structure-borne noise:

It is mainly affected by two aspects, one is the vibration transmission mode of the body structure, and the other is the noise generated by the metal components on the body due to the action of inside and outside. Solution: This situation rarely appears in new cars, pay attention to check whether the screws of the body parts are loose, and generally can be solved after tightening the screws or replacing the parts.

Hello, glad for your question.

Causes of vehicle noise: engine noise, wind noise, body resonance, suspension noise and tire sound.

During the vehicle, due to the high-speed operation of the engine, the carbon deposits were not cleaned in time, and the oil stickiness was too high, the noise was transmitted into the car through the firewall and the bottom wall.

Car Noise Elimination Method:

1. Engine noise: some high-grade sound-absorbing foam materials can be installed at the engine cover;

2. Tire noise: Shock-absorbing plate can be added with sound-absorbing pads, which can solve road noise and tire noise very roughly;

3. Wind noise: install or replace the door seal, because the seal is a rubber product, it will age after a long time, and the sound insulation and sealing effect will deteriorate.

Whether it is a high-end car, a low-end car, an imported car, a domestic car, a new car, or an old car, there are different degrees of noise problems. Interior noise mainly comes from five aspects: engine noise, wind noise, body resonance, suspension noise and tire sound. When the vehicle is moving, the engine runs at high speed, and its noise is transmitted into the vehicle through the firewall, bottom wall, etc.; The resonance of the car body when driving on bumpy roads, or the failure to resonate when the windows are opened at high speeds, can become noise.

Due to the narrow space in the car, noise cannot be effectively absorbed, and collisions with each other sometimes resonate in the car. During driving, the noise generated by the suspension system of the car and the noise generated by the tires are transmitted to the vehicle through the chassis. The noise generated by different suspension methods, different tire brands, different tire patterns, and different tire pressure is also different; Depending on the shape of the body and the speed at which it travels, the amount of wind noise generated varies from one to the other.

In general, the higher the driving speed, the greater the wind noise.

Cause analysis: Cars will have different degrees of noise problems. Interior noise is mainly caused by engine noise. Wind noise. Body resonance. Suspension grip noise and tire sound and other five aspects.

Fault Judgment: False Fault.

Cause analysis: Cars will have different degrees of noise problems. Interior noise is mainly caused by engine noise. Wind noise. Body resonance. Suspension noise and tire sound.

Whether it is high-gear, low-gear, imported cars, domestic cars, new cars, or old cars, there are basically different degrees of noise problems. Noise in the car mainly comes from five aspects:1

Engine NoiseWhen the engine rotates at high speed, the noise is transmitted into the vehicle through the firewall and bottom wall. 2.Wind noise: The magnitude of wind noise is not necessarily the same depending on the body shape and driving speed.

Normally, the higher the driving speed, the greater the wind noise. 3.Body resonance: The body resonance caused by driving on bumpy ground, or the resonance caused by opening the activated window at high speeds, will basically become noise.

Due to the small space in the car, it is not possible to absorb noise effectively, and sometimes collisions can cause resonances in the car. 4.Suspension noiseDuring driving, the noise generated by the suspension system of the car will basically be transmitted to the car through the chassis.

Different suspension methods are different for the maintenance and repair of wheels and vehicles. 5.Tire soundDifferent brands of tires, different tire patterns and different tire pressure will affect the noise caused by tire destruction.

Tire noise is also transmitted to the interior of the car through the chassis. Therefore, in order to reduce the vertical noise next to the vehicle, we need to start from the engine, body, suspension, tires and other aspects to improve the experience of drivers and passengers.

1. Engine noise: the sound of friction metal collision and so on when the engine is running normally. 2. Tire noise.

When the car is driving, it relies on the friction between the tires and the ground to maintain the stability of the vehicle, and the condition of the road directly affects the noise level, and the worse the road condition, the louder the noise. 3. Wind noise: When the car is driving at high speed, the wind speed is too large, resulting in small air pressure around the body, and the sealing situation of the car is not very good, and the wind enters the car through the weak point.

<>1. Add soundproof cotton between the hood of the car: the car generally comes with soundproof cotton, but the effect is not ideal, you can try to change to a slightly more expensive soundproof cotton, according to the type of your car to choose, which can greatly reduce the noise caused by the engine. 2. Replace with relatively economical tires

It will make your tires less noisy during driving. 3. Add sound-absorbing materials at the door of the car to reduce the noise of the wind: If the soundproofing material is added, the soundproofing effect of the car is completely improved by a grade.

Car noise has always been a big problem for the environment and individuals, if you encounter the above problems, you might as well try it, maybe you will understand after reading it.

Causes and solutions to excessive noise in car engines:

1. The vehicle engine is one of the most noisy vehicles, and its noise generation is different with the different engine speeds.

Solution: Some high-grade sound-absorbing foam materials can be added to the engine cover, which can not only suppress the vibration caused by the hood, but also absorb a lot of noise, and the effect is obvious.

2. When there is a leak in the intake and exhaust pipe, when the engine is started, the gas will leak from the leakage when the intake and exhaust are intake, resulting in vibration and noise.

Solution: In the face of such a situation, you need to check the intake and exhaust pipes, and replace the intake and exhaust pipes to avoid noise.

3. Tire noise is generated by the friction between the tire and the road surface when the vehicle is driving at high speed, depending on the road conditions to determine the size of the tire noise, the worse the road conditions, the greater the tire noise, and the tire irritability generated by the asphalt road and the concrete road surface is very different.

Solution: Tire noise is structure-borne noise, and its main source is vibration, and the most reasonable solution is to control vibration. Adding a damping plate and a sound-absorbing pad can solve road noise and tire noise well.

4. Wind noise refers to the pressure of the oncoming wind in the process of high-speed driving of the car has exceeded the sealing resistance of the door and entered the car, the faster the driving speed, the greater the wind noise.

Solution: Install or replace the door seal, because the seal is a rubber product, which will age after a long time, and the sound insulation and sealing effect will deteriorate.

Engine noise is mainly transmitted to the cab by vibrations such as the hood and front fenders. Therefore, some high-grade sound-absorbing foam can be added to the engine cover, which can not only suppress the vibration caused by the hood.

Tire noise is usually caused by the frictional impact of the tread and the ground, and is transmitted to the car at the same time as the vibrations of the fenders and fenders. Then, at this time, it is necessary to install sound insulation materials from the doors, doors, fenders, fenders and other parts to play a role in noise reduction.

Wind noise is mainly generated by the friction between the car body and the air during driving, and is transmitted to the cab through the gap in the door. Therefore, in addition to the previous step of adding sound insulation to the doors, there is also the option of adding or replacing door seals.

If there is noise when opening the sunroof, it may be that the sunroof sealing strip is aging or the sliding track is deformed, so you can ask someone to adjust it during the next maintenance. If you have strong hands-on ability, you can also replace or adjust it yourself.

Sometimes there is noise when braking, and most often there is a problem with the brake pads. If the brake pads are fine, it may be a problem with other parts such as calipers, and they should be repaired in time to prevent safety accidents.