Radial tire with ultralow passing noise
A radial tire and noise technology, applied in tire parts, reinforcement layers of pneumatic tires, transportation and packaging, etc., can solve the problems of low pass-through noise, stricter pass-through noise in labeling method, and inability to meet the requirements of pass-through noise, etc. The effect of reducing pass-through noise
Pending Publication Date: 2021-09-24
GITI RADIAL TIRE (ANHUI) CO LTD
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Problems solved by technology
According to the draft of the new labeling law, the analysis found that no less than 60% of the existing products will not be able to meet the pass-by noise requirements of the third stage of the draft, and what is even worse is that the existing products can meet the pass-by noise requirements of the fourth stage of the draft almost less than 10% of the products
[0003] Looking at the changes in the European labeling law, it is not difficult to find that the labeling law has a tendency to tighten the pass-through noise, which will lead to more and more existing products that cannot meet the requirements of the European labeling law, and more and more traditional Gasoline vehicles are replaced by electric vehicles. After the engine noise is not covered, people will pay more and more attention to the noise generated by tires.
[0004] The pass-through noise of tires in the prior art cannot reach such a low level; some tires use sound-absorbing cotton in the tire to reduce the pass-through noise. The sound-absorbing cotton is also easy to fall off during use, and the sound-absorbing cotton after falling off will not be able to reduce the pass-through noise very well; in addition, there are some technologies that often reduce other performances of the tire while obtaining lower pass-through noise
Method used
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[0016] A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings.
[0017] A radial tire with ultra-low passing noise, including carcass ply, belt ply, cap ply and tread. Under the condition of not adding additional processes, a radial tire with the lowest possible passing noise can be obtained.
[0018] In the previous tire design process, two adjacent parts of the tire sometimes used different wire harness materials, and sometimes used the same wire harness material. The only factor that determined the wire harness material was the structural role played by the part; The same rubber will be used, because the adhesion between the same rubber is better; but when the sound wave passes through the interface of different media, it will be greatly attenuated, and the degree of attenuation is proportional to the difference between the media, that is to say, the two The greater the difference in the physical and ch...
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The invention relates to the technical field of radial tires, and discloses a radial tire with ultralow passing noise, the radial tire comprises a cord fabric layer, a belted layer, a cap ply and a tread which are sequentially arranged from inside to outside, and at least two adjacent components in the cord fabric layer, the belted layer, the cap ply and the tread are made of different materials; the wire harness angle of the belted layer is 27-35 degrees, and the torsional elastic coefficient of the tire under the maximum load of 70%-80% is 65 N.m / deg to 75 N.m / deg; at least two adjacent parts are made of different materials, so that the noise of the internal cavity is weakened when being transmitted outwards; the wire harness angle of the belted layer is controlled to enable the torsional elastic coefficient to be 65 N.m / deg to 75 N.m / deg, so that the tire can meet the requirement of the first grade of the fourth stage of the European Tagon Method Grade.
Description
technical field [0001] The invention relates to the technical field of radial tires, in particular to a radial tire with ultra-low passing noise. Background technique [0002] The currently implemented European labeling law is in the second stage, but this stage is currently in an advanced stage. As the second phase ends, a new phase will take its place. According to the draft of the new labeling law, the analysis found that no less than 60% of the existing products will not be able to meet the pass-by noise requirements of the third stage of the draft, and what is even worse is that the existing products can meet the pass-by noise requirements of the fourth stage of the draft The products of almost less than 10%. Once the new labeling law is implemented, a large number of products that do not meet the regulatory requirements will have to choose to withdraw from the European market or find other ways. [0003] Looking at the changes in the European labeling law, it is not...
Claims
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IPC IPC(8): B60C9/18
CPCB60C9/18
Inventor 王喜陈云查磊
Owner GITI RADIAL TIRE (ANHUI) CO LTD