Many drivers have such a problem: when driving at high speed, the noise in the car is often unbearable. These noises may come from tires, wind resistance, mechanical vibration and other factors. This is a long-standing problem for many motorists, but is there an easy way to fix it?

Sources of noise in cars
First of all, we need to understand the source of noise in the car. Noise in the car usually comes from the following aspects:

Engine Noise: This is the most obvious of the car noises, mainly due to engine squeaking.

Tire Noise: This is air noise caused by the movement of air in the gaps between the tire treads. The new tires have good elasticity and have better performance in terms of noise and comfort. However, if the tire noise is too loud, it may be that the tire is aging or the depth of the tread groove is too shallow. It can be replaced if necessary.

Wind noise: This includes the noise caused by the pressure change caused by the separation of airflow around the car body, as well as the noise caused by wind leakage (or suction sound), which is caused by the air sucked in from the gaps in the cab and car body and interacts with the airflow around the car body. When the driving speed is faster, the wind noise will be greater, and the door sealing strip can be added or replaced.

Chassis noise: This is usually due to a problem with the shock absorbers, and the entire car will make a loud noise when passing over uneven roads. At this time, the car's shock absorbers should be checked. There may be serious oil leakage. Sound insulation pads and damping rubber can be installed.

Other noise: In addition to the main noise sources mentioned above, there are also other noise sources, such as resonance noise and noise from other mechanical components.

How to solve the noise inside the car?
Once we know the source of the noise in the car, we can take steps to solve the problem. Here are some simple ways:

1.Paste melamine foam under the engine cover to reduce engine noise. SINOYQX melamine resin foam is compounded with non-woven fiber, aluminum foil, PVC and other materials, and is widely used in automobile engine heat insulation and sound insulation covers (by compounding with non-woven fiber, it improves the low-frequency sound absorption performance, thereby achieving full-frequency noise reduction), firewall (up to 240 degrees Celsius), vanity mirror visor (melamine resin foam has excellent resistance to UV radiation), large vehicle body noise reduction and heat insulation filling, etc. It is the first choice material for the best solution for automobile lightweighting, and it also takes into account design requirements such as heat insulation and noise reduction.

2. Install sound-absorbing cotton materials on the trunk, the bottom of the trunk and the wheel eyebrows on both sides of the trunk.

3. Install sealing strips in the car door to reduce noise inside the car.

4. Replace car tires, because new tires have good elasticity and have better performance in terms of noise and comfort. However, if the tire noise is too loud, it may be that the tire is aging or the tread groove depth is too shallow.

5. Pay attention to check whether the screws of body parts are loose. Generally, the problem can be solved by tightening the screws or replacing parts.

6. Clean the door lining, and install melamine sound-absorbing materials, mute materials, vibration-absorbing materials, etc. on the lining board. In addition, sealing materials should be applied around the fixed plate and speakers, so that the sound insulation effect is very good.

7.Tire noise belongs to structure noise, and its main cause is vibration. The most reasonable solution is to control vibration. In response to the high standards of quietness and safety required by new energy vehicles, SINOYQX developed special melamine foam for new energy tire noise reduction, which can reduce tire noise from 9 dB to 15 dB.

8.Check the air conditioning system: A malfunction in the air conditioning system may cause excessive noise. Various components of the air conditioning system, such as fans, compressors, etc., can be inspected and damaged components cleaned or replaced.

9.Use noise reduction products: There are some noise reduction products on the market, such as ice silk car seat cushions, car elastic floor mats, car mobile phone holders, tire clearing stone hooks, etc. These products can effectively reduce the noise inside the car and improve driving comfort.

For more information about SINOYQX Melamine Foam, please reach us at [email protected] or voice to us: +86-28-8411-1861.