What is the effect of sound insulation and noise reduction in this car?

Car sound insulation is a system engineering, first of all, to understand the origin of car noise. Generally speaking, when a car is in the driving state, it will produce three types of noise: engine noise (engine noise), wind noise, and road noise (noise caused by tires coming into contact with the ground during driving). What we usually refer to is generally road noise and machine noise insulation.

Road noise and machine noise insulation is mainly to use sound insulation materials to wrap the compartment to achieve the purpose of noise reduction, this project mainly includes the laying of sound insulation cotton on the floor of the compartment (including four wheel shells) to achieve the purpose of reducing road noise, the front of the car is to carry out four-sided sound insulation (left, right, rear, up) to achieve the purpose of reducing machine noise, if you want to have a better sound insulation effect, then the chassis is armored spraying (that is, chassis armor), from the perspective of reducing resonance to reduce noise. Generally speaking, there is no effective way to reduce wind noise, but if the wind winding plate (also called the wind wing) is installed, the body surround and other ways to change the drag coefficient of the front of the car body, so as to achieve the purpose of reducing noise to a certain extent.

Unless you have the tools and know a lot about the structure of the car, it is not advisable to do your own sound insulation. Generally, sound insulation is carried out for the cabin sound insulation package, as well as the upper sand board of the engine room is laid with sound insulation cotton, plus the chassis armor spraying, to achieve the purpose of noise reduction. If you want to insulate the left, right and rear sides of the cabin, you have to use special tools to lift the engine before laying soundproof cotton.

The sound insulation material must be good, you can consider the United States solid shield, especially the cabin sound insulation, but also make the cabin more difficult to dissipate heat, if in the process of sound insulation wiring (due to the laying of sound insulation cotton, will inevitably make part of the cabin and compartment wires re-laying) problems, the summer heat is easy to lead to spontaneous combustion of the car. Therefore, the choice of service providers must also be service providers with excellent technical capabilities. What is the chassis armor.

Chassis armor", that is, spraying a layer of protective glue on the chassis of the car, as if adding armor to the steel plate of the car chassis, armor is just a figurative title. The main function is to prevent rust, and secondly, it can also reduce the noise transmitted from the chassis to the cab.

Now the factory cars, it may be that the manufacturer has done very little to protect the chassis for cost considerations, most of them are only coated with a thin layer of anti-rust materials, and some even do not take any measures. These cars feel that the chassis is very fragile, the bumps on the road, flying stones and other noises are very clear, this kind of chassis, how can it not be corroded and deformed for a long time? Therefore, most cars need to do chassis armor, and it is best to do it as soon as possible when a new car is in order to prolong the life of the car.

Old cars can't be ignored, and prevention is the best policy.

1. If in order to reduce noise, the effect of making a door is not very large, and there is no need to make a door if you don't change the horn.

2. However, the sound insulation of the whole car generally includes the door, which is more preferential, and the later modified horn does not need to be a separate door. 3. The sound insulation of the whole car includes: hood, fender, chassis, tail box, tailgate, 4 doors, ceiling, firewall, U-shaped slot, and the sound insulation of the whole car does not include the roof, firewall and U-shaped slot.

4. The fender is mainly tire irritability, the chassis is road noise, the firewall is the engine, and the 4 doors are wind noise.

5. Because every car will have windows, even if the 4-door sound insulation is done, the wind will not weaken much, because the sound insulation of the window is impossible to do. Therefore, even if you do 4 doors, the effect will not be too obvious. If you want to change the horn, it is a must; If you want to have a noticeable effect, we recommend:

Do the fender, chassis, and tail box, so that the effect is more obvious. If the effect of making a door is not too great for noise reduction, there is no need to make a door if you don't change the horn.

However, the sound insulation of the whole car generally includes the door, which is more preferential, and the later modified horn does not need to be a separate door.

The sound insulation of the whole car includes: hood, fenders, chassis, tail box, tailgate, 4 doors, roof, firewall, and U-shaped slot.

Generally, the whole car soundproofing mentioned by the store does not include the roof, firewall and U-shaped slot.

The fenders are mainly tires, the chassis is road noise, the firewall is the engine, and the 4-door is windy.

Because every car will have windows, even if you do 4-door sound insulation, the wind will not weaken much, because the sound insulation of the windows is impossible to do.

Therefore, even if you do 4 doors, the effect will not be too obvious. If you want to change the horn, it is a must;

If you want the effect to be obvious, it is recommended to do it on the fenders, chassis, and tail box, so that the effect is more obvious.

The effect is not ideal. It is useful for those who pay attention to car audio, and the words of other car owners feel that it is not very practical and a waste of money. 1. If the car is fully soundproofed, it is very necessary for those who pay attention to car audio, especially those who pay attention to the auditory effect, because car sound insulation can not only improve the sound quality of the speaker, but also play a role in preventing tire noise, road noise, and wind noise, which can be reduced by about 3 to 5 decibels.

It can also reduce noise, improve sound quality, and keep warm, which can save fuel consumption. 2. But for those who do not pay attention to the sound effect, it is not much necessary to do sound insulation, because it does not help to improve the driving and engine noise, and the phone bill is about 4,000 yuan, and the weight of the body will increase by about 40 kg after the complete car sound insulation, which may have a little impact on the power system and increase the weight.

It is effective for the car to do the sound insulation of the whole car. The reason why some good cars have good sound insulation effect is because they have thick skins, and the principle of sound insulation is to increase the thickness of the skins. The hood, fender, chassis, tail box, tailgate, 4 doors, roof, firewall and U-shaped groove should be made, and each part is made of two layers, a shock absorber plate and a sound absorbing cotton.

The soundproofing of the whole car includes:

1. Door sound insulation: four-door sound insulation usually adopts three layers of sound insulation, one layer is the inner cavity of the car sound insulation, the second layer is the outer layer of car sound insulation, the third layer is generally in the car interior panel for sound insulation cotton treatment, the effect of the vibration stop plate is to strengthen the thickness of the sheet metal and reduce the resonance.

2. Chassis sound insulation: the chassis is generally low-frequency noise, and the vibration absorbing plate is used to stop vibration, and the sound-absorbing cotton is used to absorb medium and high frequency noise.

3. Trunk sound insulation: In the process of driving the body, the buffer of soundproof cotton will also reduce the impact on the bottom sheet metal when the trunk vibrates. Since the trunk lid is also a part that is easy to conduct noise, soundproof cotton is added to it to absorb high-frequency noise.

4. Hood sound insulation: It is active noise in the whole car, and it is also the only active noise in the whole car. In the process of working the engine, it will make mechanical noise due to the ignition of the engine, as well as the blasting sound of gas combustion during ignition.

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The effect must be there, generally before and after doing the noise in the car with a special decibel meter test to compare, specifically to do sound insulation has the following functions and functions: 1 strengthen the vehicle sheet metal to suppress body vibration, 2 to isolate the noise outside the car is more comfortable and quiet, 3 strengthen the door panel box to enhance the sound effect in the car, 4 and the perfect combination of solar film to achieve the ideal effect of heat insulation, 5 and the perfect combination of chassis armor to reduce tire and road noise.

Is it effective to do car sound insulation, the whole car? If these 3 places are done well, it will be much quieter! There are also a lot of car owners when driving, they also feel a lot of headache for the noise of the car, they will feel that the noise in their car is poor sound insulation, they like to listen to songs when driving, and the noisy style can not be enjoyed at all, so does the car need to do the whole car sound insulation?

So let me tell you, it is best to do the whole car sound insulation, but it still depends on the needs of the individual, if the noise is very large, it is recommended to do the whole car sound insulation, if the noise of the car is not big, do 4 door sound insulation and sealing strip sound insulation effect is also particularly good, the sound insulation analysis of different parts of the car, as far as the general car is concerned, the source of annoying noise is nothing more than the engine, chassis, wind cut sound, body resonance, etc., let's take a look at how to solve these problems.

The first engine is soundproofed. For a new car that has just started, it feels that the noise of the engine is very large, but it looks very normal after checking the parts of the engine, then this noise is mainly transmitted to the cab through the vibration of the hood front fender and other vibrations to the sound sensitivity, you will also feel very irritable and abnormal, in view of this situation, there is no way to deal with this noise in the later stage, so it is said that you need to do sound insulation modification in the engine cover. Quality-assured soundproofing suppresses vibrations and absorbs a lot of noise.

The second door is soundproofed. In our lives, we often see that there will be some gaps between the windows and the body of the car, forming a high and the like, and there is a certain gap with the car, in fact, these analyses will produce friction in the process of driving the car, and friction collision will produce noise, so in this case, we can install these sound insulation strips, not only to play a sound insulation. And it also allows us to minimize the loss of our cars.

The third chassis is soundproofed. In addition to the engine itself, there is also the noise of friction between the road surface and the tires under the car, which can be transmitted to the chassis inside the car through the chassis and can also be used to eliminate and block the noise from the outside of the car. Chassis armor is a layer of elastic sealing material, which can play the role of sound insulation and noise reduction on the outside, which is also a project that most vehicles will do to protect the chassis from the outside.

Therefore, in this case, the use of some sound insulation strips can still be very effective to help us solve the problem of high noise in the car, and it can also effectively make our car become more of the day, and the damage to the windows and body will become very small.

There is no effect after the sound insulation of the whole car, which is related to the sound insulation material and the construction process.

To make the sound insulation effect of the car good, it is necessary to ensure that the sound insulation material under construction has the function of "damping and vibration stopping, sound absorption, and sound insulation", and it must be properly constructed, so that the three functions can play a role in order, so that there will be a good noise reduction effect. In addition, the premise is to ensure that the door is tightly sealed and there are no gaps.

1.Soundproofing. The automobile sound insulation project can effectively eliminate and block the engine noise, vibration, resonance of the body door, and the friction sound generated by the road surface and air resistance when driving, giving you a quiet driving space and greatly improving the comfort of driving.

2.Strengthen the body. The non-key parts of the body hood, doors, trunk compartment, roof, and fenders are relatively weak, and after the installation of automobile sound insulation materials, the body is stronger, and in the event of a collision, it is passive.

3.Optimize acoustics. The audio, especially the subwoofer mounted at the rear, causes the trunk to vibrate and the sound effect is reduced, which is because it is not done. Look

Sound insulation Automobile sound insulation engineering can effectively eliminate and block engine noise, vibration, resonance of body doors, friction sound generated by driving and road surface and air resistance, etc., giving you a quiet driving space and greatly improving the comfort of driving.

Hope it helps, thank you.

The sound insulation effect of the Civic is notoriously poor mainly because 1 of the thin skin of the car has poor sound insulation and strong resonance 2, the tires are wide, the tire noise is high, and the Yokohama tires are slightly harder. 3. The engine is loud, whether it is idle or high-speed. 4. The sound insulation cotton of the whole vehicle is relatively thin.

5. The shock suspension is stiff and the sports suspension has advantages and disadvantages. 6. The chassis material is thin, and the chassis glue can be sprayed to improve the sound insulation effect. 7. The cover is abnormally thin and light, the engine sound is very obvious, and the sound insulation cotton of the hood is also very thin.