The invention relates to the technical field of tires, and discloses a low-rolling-resistance low-flatness wide-base radial tire which comprises a tread and a plurality of circumferential pattern grooves formed in the tread in the circumferential direction, the two circumferential pattern grooves close to the shoulder of the tire are conventional open type pattern grooves, and the other circumferential pattern grooves are self-closing grooves in the loading state; the groove depth GD1 of the conventional open type pattern groove, the width W1 of the upper edge, the thickness M of the central position of the tire, the total width TDW of the tread, W2 and W3 have the following relations: GD1 is smaller than or equal to 40% M, W1 is equal to 3.3%-3.5% TDW, W2 is equal to 1.2%-1.4% TDW, and W3 is equal to 1.0-1.5 mm. The longitudinal pattern grooves in the middle adopt self-closing design in a loading state, the rigidity of the pattern blocks in the middle of the tread can be effectively increased, the influence of the pattern rigidity in the middle of the tire tread on rolling resistance is obviously higher than that of a shoulder, and the larger the rigidity of the middle is, the lower the rolling resistance is.

    本发明涉及轮胎技术领域,公开了一种低滚动阻力低扁平宽基子午线轮胎,包括胎面,以及沿周向设置在胎面上的多个周向花纹沟,靠近轮胎肩部的两条周向花纹沟为常规开放式花纹沟,其他周向花纹沟为加载状态自闭合沟;常规开放式花纹沟的沟深GD1、上边缘宽度W1,轮胎中心位置厚度M,胎面全宽TDW,W2以及W3之间具有如下关系:GD1≤40%M,W1=3.3%~3.5%TDW,W2=1.2%~1.4%TDW,W3=1.0~1.5mm。本发明中部的纵向花纹沟采用加载状态自闭合设计,可以有效地增加胎面中部花纹块的刚性,轮胎胎面中部的花纹刚性对滚阻的影响明显高于肩部,中部刚性越大,滚阻越低。


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    Title :

    Low-rolling-resistance low-flatness wide-base radial tire


    Additional title:

    一种低滚动阻力低扁平宽基子午线轮胎


    Contributors:
    GU YU (author) / HUANG XUEHAI (author) / LI XIAOPING (author) / ZHANG JINCHUAN (author) / SUN XIAOMING (author)

    Publication date :

    2023-11-24


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60C VEHICLE TYRES , Fahrzeugreifen



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