In terms of tire formula, reducing wind noise should be handled from two levels. First, the direction of vulcanized rubber, the softer the material, the better the tire shock absorption and the lower the noise.
The second is to use different pattern design schemes. At present, most tire manufacturers have relatively perfect products to reduce wind noise according to the change of patterns. In order to better separate the natural frequencies between knuckles, we can choose the design scheme of the wild pitch, or we can release gas from the ravine with the help of the design scheme of the groove developed by the outer shoulder, which can also achieve the actual effect of reducing noise.
Although the denser the pattern is, the higher it is theoretically, it is also related to the content and relative density of vulcanized rubber. If the direction of the groove is small, the noise is small. For example, the noise of a groove of 90 degrees needs to be much greater than that of a groove of 45 degrees. Or the application of closed trench can reduce the lateral mobility of gas on the platform surface, so that there will be less cyclone fitness exercise and less noise.
In other words, if you don't want the tires to make noise, then you can choose mute tires. For example, Michelin tires PrimacyLC, Primacy3ST and PrimacyHP all have good mute characteristics. The quieter models and specifications of German horse brands are CC5, MC5 and CPC2 series; The specifications of domestic tires in Chaoyang District are RP76 and SA37.
Naturally, because most of the noise comes from the outside to the inside of the car, we can also start from the root cause and reduce the noise according to the sound insulation on the motor vehicle. According to different factors causing noise, automobile sound insulation can be divided into automobile door sound insulation, automobile chassis sound insulation, automobile trunk sound insulation and hood sound insulation.
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