The invention discloses a method for improving NVH (Noise Vibration and Harshness) of a tire and the tire, and belongs to the field of tires. The thickness B of the base rubber of the central part is equal to C * alpha, the value of alpha is greater than 0.3, and the thickness A of the crown rubber is greater than GD-TWI; the thickness D of the longitudinal groove part base glue is equal to C * beta, the value of beta is greater than 0.1, and the thickness d of the groove bottom crown glue is greater than or equal to C-GD-D; the thickness E of the base rubber of the tire shoulder part is equal to B * gamma, and the value of gamma is 0.4-0.6; the rubber width L of the base part of the central part is equal to TW * delta, and the value of the delta is 0.6-0.7; the ratio of the height BFH of the apex to the height SH of the section of the tire meets the condition that BFH/SH is equal to 20% +/-5%; the cap ply is wound in an S-shaped spaced mode, the distance Q between the tail end of the spaced cap ply and the tail end of the shoulder cap ply is not smaller than 5 mm, and the distance P between the tail end of the spaced cap ply and the center is larger than the distance P between the tail end of the shoulder cap ply and the center. The method is applied to the tire aspect, the technical problem that the requirements of an existing vehicle factory for low noise and the testing period of the tire are higher and higher is solved, and on the basis of guaranteeing the development period of 30 days and under the condition that the budget cost is not greatly increased, the NVH overall improvement of the rough asphalt road and the cement grooving road can be rapidly achieved.
本发明公开了一种提高轮胎NVH的方法及轮胎,属于轮胎领域。包括中心部基部胶厚度B=C*α,α的取值大于0.3,且胎冠胶厚度A>GD‑TWI;纵沟部基部胶厚度D=C*β,β的取值大于0.1,且沟底冠胶厚度d≥C‑GD‑D;胎肩部基部胶厚度E=B*γ,γ的取值为0.4‑0.6;中心部基部胶宽度L=TW*δ,δ的取值为0.6‑0.7;三角胶高度BFH与轮胎断面高度SH的比率满足:BFH/SH=20%±5%;冠带层采用S型间隔式缠绕,间隔式冠带尾端与肩部冠带尾端距离Q不小于5mm,且间隔式冠带尾端与中心距离P要超过肩部第二纵沟。本发明应用于轮胎方面,解决现有车厂对轮胎低噪音及测试周期要求越来越高的技术问题,在保证开发周期30天的基础上,不大幅增加预算成本的情况下,能够快速实现粗糙沥青路和水泥刻槽路NVH整体提升。
Method for improving NVH of tire and tire
一种提高轮胎NVH的方法及轮胎
2022-07-12
Patent
Elektronische Ressource
Chinesisch
IPC: | B60C VEHICLE TYRES , Fahrzeugreifen |
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