Two-Layer Carcass Tire Structure for High-Load Sidewall Control

The tyre structure is divided into two distinct carcass layers (first and second carcass layers) with different functions. The first carcass layer provides structural support and load-bearing capacity, while the second carcass layer specifically addresses energy dissipation and temperature control. This segmentation allows each layer to be optimized for its specific function, enabling high load capacity without increasing overall tyre size.

The harmful function of energy dissipation and heat generation is extracted and addressed by the second carcass layer, which is specifically designed to reduce energy dissipation in the sidewalls. This allows the first carcass layer to focus on load-bearing while the second layer compensates for energy losses, maintaining low rolling resistance even at high loads.

Instead of changing the inflation pressure parameter, the invention changes the structural parameters of the tyre by introducing a two-layer carcass system. The first carcass layer with higher tensile strength allows the tyre to maintain structural integrity at lower pressures, while the second carcass layer provides additional support. This parameter change in structure rather than pressure enables high load capacity while maintaining comfort.

The tyre uses a composite carcass reinforcement system with two different layers. The first carcass layer uses materials and construction optimized for high tensile strength to handle the primary load-bearing requirement. The second carcass layer uses materials and construction optimized for reducing energy dissipation and controlling tension distribution. This composite approach allows the tyre to bear high loads while distributing and managing the reinforcement tensioning effectively.