The invention provides a low-rolling-resistance and high-wet-grabbing pneumatic radial tire, which belongs to the technical field of tires, and comprises a tread and a circumferential groove extending along the circumferential direction of the tread, the contour between the highest point of the tread and the end point of one side of the tread is sequentially divided into a first arc section, a second arc section, a third arc section and a fourth arc section, the radius TR1 of the first section of arc, the radius TR2 of the second section of arc, the radius TR3 of the third section of arc and the radius TR4 of the fourth section of arc meet the following relation: TR1: TR2: TR3: TR4 = 2.3: 1.9: 1.6: 1; the number of the circumferential grooves is five, the five circumferential grooves sequentially comprise a central water-drop-shaped pattern groove, two pattern grooves close to the center and two shoulder water-drop-shaped pattern grooves from the center to the two sides of the tread, and the central water-drop-shaped pattern groove and the shoulder water-drop-shaped pattern grooves are grooves which are self-closed in a loading state; according to the invention, the tire structure design, the pattern design and the formula design are optimized, so that the tire has the ultimate durability, low rolling resistance and full-life-cycle high-wet-grip performance at the same time.
本发明提供一种低滚阻高湿抓的充气子午线轮胎,属于轮胎技术领域,包括胎面以及沿胎面圆周方向延伸的周向沟槽,胎面最高点至胎面一侧的端点之间的轮廓依次分为第一段弧、第二段弧、第三段弧以及第四段弧,第一段弧半径TR1、第二段弧半径TR2、第三段弧半径TR3、第四段弧半径TR4满足如下关系:TR1:TR2:TR3:TR4=2.3:1.9:1.6:1;周向沟槽设置有五条,五条周向沟槽沿所述胎面中央向两侧依次包括中央水滴型花纹沟、两条靠近中央花纹沟以及两条肩部水滴型花纹沟,中央水滴型花纹沟和肩部水滴型花纹沟为加载状态自闭合的沟槽;本发明通过从轮胎结构设计、花纹设计和配方设计进行优化,实现轮胎具有极限耐久能力,同时具备低滚阻和全生命周期的高湿抓性能。
Pneumatic radial tire with low rolling resistance and high wet grip
一种低滚阻高湿抓的充气子午线轮胎
2025-02-18
Patent
Electronic Resource
Chinese
IPC: | B60C VEHICLE TYRES , Fahrzeugreifen |
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