| 摘要 |
<p>The invention concerns a tyre (41) with radial carcass reinforcement comprising a crown reinforcement (44) consisting of at least two working crown plies (441, 442) of inextensible reinforcing elements, crossed from one ply to the other forming with the circumferential direction angles ranging between 10° and 45°, itself capped with a running tread (45), the axially widest working crown ply being radially inside the other working crown plies. The tyre further comprises in each shoulder at least one layer (443) of radially oriented reinforcing elements, the axially inner end of said additional layer (443) being radially adjacent to the edge of the radially outer working crown ply (442), and at least part of said additional layer being adjacent the edge of the axially widest working crown ply (441), the ratio of the modulus of elasticity of one layer P over the module of elasticity of the liner layer of the working ply adjacent the additional layer ranging between 0.5 and 1, the axially outer end of said layer P being located axially between the ends of the axially narrowest and widest working crown plies</p> |
