NEWS
Quietness，The Most Needed Technology
People have never stopped pursuing the quietness of tires.In the past,due to the loud engine noise,the noise of tires was difficult to detect.But now with the increasing quietness of vehicles and the emergence of electric vehicles,the noise of the vehicle itself has been greatly reduced.This is where the problem of tire noise comes into focus.This is especially true for some electric vehicles without engines.This forces tire companies to develop quieter tires.
At present,many tire brands on the market claim that they have quiet tire products,but the actual use effects are very different,and there are even fewer brands that are truly recognized by consumers in terms of word of mouth.However,Michelin,Continental,Goodyear,and Dunlop can perfectly interpret the quiet technology,and their products are very popular in the market.
When the vehicle is driving,the internal pressure changes of the rolling tires will squeeze the air inside the tires to produce so-called"cavity noise".These noises are transmitted from the body(steering wheel,seats,chassis)to the interior of the vehicle through resonance.The Acoustic tire silent technology uses a specially designed polyurethane sponge on the inside of the tire to muffle the noise resonance caused by the road surface,which can effectively reduce the amount of noise entering the cockpit.The polyurethane foam partition isolates the noise layer,effectively absorbs noise,and the partition structure will remain intact under high temperatures.
The sound-absorbing sponge used in Pirelli tires can reduce the noise filtering frequency,so it is more comfortable than ordinary tires.The inner side of the tire has a special sound-absorbing polyurethane foam inlay,which is firmly adhered with a layer of sealing protective material.Hankook Tire's patented noise reduction technology"sound absorber"significantly improves the vehicle's driving comfort.
As an iterative upgrade,Continental ComfortContact CC7 uses multiple sound insulation and noise reduction technologies to bring a multi-dimensional noise reduction technical solution.ComfortContact CC7 tires are equipped with variable frequency noise reducers,which reduce noise peaks by disrupting the frequency of sound waves in the grooves and blocking noise from reaching the human ear.The optimized and upgraded second-generation resonance silencing cabin innovatively uses the Helmholtz resonator principle to effectively absorb the high-frequency sound waves generated when airflow passes through the tread,improving the silencing effect and reducing the noise level in the car.Pirelli Noise Canceling System is installed in the tires.This technology is designed to reduce the noise generated by the interaction between the road surface and the tires and transmitted into the car.The PNCS Noise Canceling System can reduce road noise by 25%."Pirelli Noise Cancellation System"can reduce noise by 2-3 decibels,or an average of 2.5 decibels.Special sound-absorbing devices placed in the tires can absorb vibrations in the air,so that the sound energy tends to be evenly dispersed over a wider frequency range,which can It avoids energy accumulation in frequency bands that are easily detectable by the human ear and improves the quiet comfort of driving.
Chaoyang No.1 EV Silent Cotton Tire adopts Zuper-Silent super silent technology,polyurethane silent cotton effectively absorbs cavity tire noise,and Soundbolt Array technology reduces tire noise.EV nano space structure reduces heat generation and energy consumption.
Quoted from the official account of"Tire Business"