What can be done to completely eliminate noise in the car?

As long as you wear headphones, there is no noise.

Wuling Hongguang S don't buy this car, the sound of the new car is louder than **.

Spend a little more money and buy a car with better noise resistance.

Check that the windows are fully closed, check that there are no mechanical faults in the car, and if you do both, you can completely eliminate the noise.

When the ignition is turned off, there will be no noise.

If you want to completely eliminate the noise in the car, you should drive the car slowly, not too fast.

Shut everyone up? Rather than working on yourself, wear headphones or earplugs to isolate yourself from the noise in the car.

You can go and change the window and change it to a window that is particularly noise-bearing. This may completely eliminate the noise in the car.

I think it's hard to completely eliminate it unless you don't drive, but we can weaken. The speed of the car slows down, so go to the maintenance in time.

Stick a sound-absorbing sponge in the car to reduce the noise in the car.

First of all, check the condition in the car, find out the noise, and then eliminate the noise according to the elimination situation.

You can change a way of thinking, for example, to make the ** in the carriage louder. **Sound over noise.

You can put ** in the car, and then you can listen quietly, which can not only reduce the noise, but also relax yourself.

You can send the car to a regular specialized car repair shop for repair, or you can find some way to install a sound insulator in the car and replace the machine.

The hazards of car noise

Car noise will first cause psychological symptoms such as inability to concentrate and memory loss, and then lead to mood upset, emotional instability, and even reduced patience and temper tantrums, which has a great impact on safety during driving. Noise hazards are especially evident in infants and toddlers who are in the growing and developing stages. Babies who are constantly exposed to noisy environments not only suffer hearing damage, but also affect their mental development.

So if there is a lot of noise in the car, it will not only affect the driver, but also the people in the car.

The location where car noise is generated

Engine noise: Noise in the vehicle is mainly generated by mechanical components such as the engine.

Road noise: The sound of tires rubbing against the ground.

Wind noise: The sound of collision and friction caused by a car breaking through an air curtain.

Vibration noise: Interior noise caused by vibration of components such as cockpit interior panels.

The sound of the outside environment coming into the car: such as the sound of a large container truck whistling by.

Control of car noise

Surveys show that motor vehicle noise accounts for urban traffic noise. The propagation of vehicle noise is closely related to the number of roads and the size of traffic measurements. In a city with narrow pathways and high-rise buildings lined with them, the noise reflects back and forth, making it even more noisy.

The same noise source is 5-10 decibels louder on the open ground on the street, and the guardrails on both sides can also reflect the noise when driving on the highway, so the noise from the outside is isolated, and the car is quiet. Important part.

The first is the noise of the engine

The partition between the engine compartment and the cockpit requires it to be both sound insulation and fire prevention, and the engine cover will add sound insulation cotton, sound insulation cotton is a common sound insulation means, generally more than 15w cars, there should be sound insulation cotton everywhere, but it is not excluded that some darker manufacturers will cut corners to save some.

Automotive tightness

Automobile sealing strip has the function of filling various gaps between the components of the body, with shock absorption, waterproof, dustproof, sound insulation, decoration and other functions, improve the comfort of the driving experience and protect the car body, mainly used in the door leaf, door frame, front and rear windshield, engine cover and trunk cover. In the process of driving the vehicle, if the sealing strip hardens, deteriorates, breaks, etc., the air and the vehicle gaps, corners of friction will produce sound, if the seal is not good, there is this sound in the middle of the night, it is really scary.

3. Tire noise

It is generally composed of three parts: one is the air flow of the tire pattern gap and the air noise caused by the air disturbance around the tire, and the other is the tire vibration noise caused by the vibration of the carcass and the tread part, especially the hard material of some tires, which is especially easy for car owners to feel the road noise; The third is the road noise caused by uneven road surface. If you don't want to make such a lot of tire noise, silent tires are a good choice.

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.

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.

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.

1. For engine noise, some high-grade sound-absorbing foam materials can be installed on the engine cover.

2. For tire noise, add a damping plate to cooperate with the sound-absorbing pad.

3. Wind noise, install or replace door seals.

4. For body structure noise, pay attention to check whether the screws of the body parts are loose.

The following standard methods can be adopted for noise control:

1) Sound absorption and noise reduction is a method to control the intensity of noise in the propagation pathway. The sound-absorbing effect of an object is universal, and the sound-absorbing effect is related not only to the sound-absorbing material, but also to the sound-absorbing structure chosen. This technique is mainly used in interior spaces.

2) Noise attenuation muffler is a device that can not only make the air flow pass through but also effectively reduce noise. Mufflers are often used to reduce the noise transmitted at the inlet and outlet of various aerodynamic equipment or along pipes. For example, in internal combustion engines, generator sets, cooling towers, etc.

3) Develop better noise control, use the most advanced sound insulation panels, noise barriers, sound absorbing board materials to block, insulate, absorb sound and build to absorb the sound energy in transmission, or set up barriers to reflect all or part of the sound.

The most effective way to solve the noise of the car is to use the sound insulation material of the car to dampen and seal the sheet metal of the car, improve the defects of the horn installation environment, restore the sound pressure and sound quality effect of the car audio, reduce the noise transmitted by the car sheet metal structure, improve driving comfort, and the car sound insulation project is not only sound insulation, but also can effectively block the high temperature generated by the engine work, improve the air conditioning effect, and make you feel cool. The non-critical parts of the body cover, doors, trunk compartment, roof, and fenders are relatively weak, and after the installation of sound insulation materials, the body is stronger, and the passive safety factor is improved in the event of a collision. In particular, the subwoofer installed in the rear causes the trunk to vibrate and reduce the sound effect, because the structure of the car cannot withstand the impact of the super bass and make a "squeak" sound without proper shock absorption.

After the sound insulation construction, the resonance of the body metal is eliminated, and at the same time, it has a good sound absorption effect, and the sound can be felt more clear, rich and surging.

There are four "sources" of car noise: engine noise, tire noise, noise in the air, and noise caused by the body structure.

1.Engine noise. In addition to the mechanical sound emitted by the engine block, it also includes the air intake system noise, that is, the high-speed gas enters the cylinder through the air filter, intake pipe, and valve, and during the flow process, a strong aerodynamic noise is generated.

Engine noise is mainly transmitted into the cockpit from the fire barrier and the front floor of the cab.

2.Tire noise. The general tire noise is mainly composed of three parts: one is the air flow between the tire pattern and the air disturbance around the tire; the second is the tire vibration noise caused by the vibration of the carcass and the tread part; The third is the road noise caused by uneven road surface.

3.Airborne noise. One is wind noise, which 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.

4.Structure-borne noise. It is mainly affected by two factors, 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 vibration generated by the inside and outside.