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    • 3. 发明申请
    • HEAVY TRUCK TIRE
    • 重型卡车轮胎
    • WO2017116834A1
    • 2017-07-06
    • PCT/US2016/067707
    • 2016-12-20
    • COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELINMICHELIN RECHERCHE ET TECHNIQUE S.A.TROWBRIDGE, JeremyCRESS, RonaldMAHESHA, Chaitra
    • TROWBRIDGE, JeremyCRESS, RonaldMAHESHA, Chaitra
    • B60C11/00
    • B60C11/0075B60C11/0058B60C2011/0016B60C2011/0025B60C2011/0033B60C2200/06
    • The invention provides for a heavy truck tire (1) having a sub-casing, a belt package (19) and a rubber tread(2), the tread extending axially form a first tread edge (N) to a second tread edge (Ν') over a rolling tread width (RTW), the tread comprising a shoulder zone (21) adjacent to each of said first and second edges and a center zone (25) separating the two shoulder zones, each shoulder zone comprising a radially lower shoulder layer (24) and a radially upper shoulder layer (22), the upper shoulder layer being intended to come into contact with the ground and the lower shoulder layer being interposed between the belt package and the upper shoulder layer, the upper shoulder layer consisting of an upper shoulder rubber compound, the lower shoulder layer consisting of a lower shoulder rubber compound being different from the upper shoulder rubber compound, wherein: - the upper shoulder layer extends a distance LI from a tread edge (N, N') axially inward, the distance LI being greater than 15% and less than 40% of the rolling tread width (RTW); - the upper shoulder layer has a thickness (T22) of between 70% and 130% of the tread depth over at least 80% of the distance LI; - the lower shoulder layer extends a distance L2 from a tread edge (N, N') axially inward, the distance L2 being greater than 15% of the rolling tread width (RTW); - the lower shoulder layer has a thickness of at least 4 mm over the portion of the shoulder zone which covers the belt package; - the upper shoulder rubber compound has a G* 50 of at least 1.3 Mpa and a max tan(5) of at least 0.12; - the lower shoulder rubber compound has a max tan(5) not greater than the max tan(5) of a center rubber compound in the center zone being intended to come into contact with the ground; and - the center rubber compound has a max tan(5) of at most 0.09.
    • 本发明提供了一种重型卡车轮胎(1),其具有子壳体,带束包装(19)和橡胶胎面(2),所述胎面轴向地延伸形成第一胎面边缘(N )在轧制胎面宽度(RTW)上延伸到第二胎面边缘(N'),所述胎面包括与所述第一和第二边缘中的每一个相邻的肩部区域(21)和分隔所述两个肩部区域的中心区域(25) 每个肩部区域包括径向下肩层(24)和径向上肩层(22),上肩层旨在与地面接触,并且下肩层插入在带包装和上肩部 所述上肩部层由上肩部橡胶化合物组成,所述下肩部层由与所述上肩部橡胶化合物不同的下肩部橡胶化合物组成,其中: - 所述上肩部层从胎面边缘延伸距离L1( N,N')轴向向内,距离为L1 大于轧制胎面宽度(RTW)的15%且小于40%; - 上肩层在距离L1的至少80%上具有胎面深度的70%和130%之间的厚度(T22) - 下胎肩层从胎面边缘(N,N')轴向向内延伸距离L2,该距离L2大于轧制胎面宽度(RTW)的15%; - 下部肩部层在覆盖带束包装的肩部区域的部分上具有至少4mm的厚度; - 上肩部橡胶化合物具有至少1.3MPa的G * 50和至少0.12的最大tan(5); - - 下部胎肩橡胶复合物的最大tan(5)不大于中心区域中的中心橡胶混合物的最大tan(5),以用于与地面接触; 并且 - 中心橡胶化合物的最大tan(5)最大为0.09。