Single-Layer Textile Tyre Carcass for Weight Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional tires for light trucks are heavy and have complex manufacturing processes due to multiple layers of reinforcement, which affects their endurance and weight efficiency.
Innovation Solution
A tire design featuring a single layer of textile reinforcement elements around the bead wire, with specific rubber compounds and filler elements to enhance breaking force and endurance, eliminating the need for aromatic polyamide layers and simplifying the manufacturing process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If multiple layers of reinforcement elements are used in the carcass, then the tire strength and endurance are improved, but the tire weight and manufacturing complexity increase
Solution Approach 1:
The patent extracts and eliminates the aromatic polyamide layer from the traditional multi-layer carcass structure, retaining only the necessary textile reinforcement layer. This removal reduces tire weight while maintaining sufficient strength through optimized textile reinforcement configuration and rubber compound formulation.
Solution Approach 2:
The patent employs composite materials by combining textile reinforcement elements with specifically formulated rubber compounds containing fillers and reinforcing agents. This composite approach compensates for the reduced layer count, maintaining carcass strength with a simplified single-layer structure that is lighter than traditional multi-layer designs.
2Stability of the object's composition
If multiple layers of reinforcement elements are used in the carcass, then the tire structural integrity is improved, but the manufacturing process complexity increases
Solution Approach 1:
The patent removes the aromatic polyamide layer and simplifies the carcass to a single textile reinforcement layer, directly reducing the number of manufacturing steps required for layer assembly, alignment, and bonding. This extraction simplifies the manufacturing process while maintaining structural integrity through optimized single-layer design.
Solution Approach 2:
The patent merges the functions of multiple traditional layers into a single integrated textile reinforcement layer. This consolidation combines the structural support and endurance functions that were previously distributed across multiple layers, simplifying both the manufacturing process and the final structure while maintaining integrity.
3Weight of moving object
If a single layer of textile reinforcement is used, then the tire weight is reduced, but the risk of crack propagation increases
Solution Approach 1:
The patent uses composite materials with specifically selected fillers and reinforcing agents in the rubber compound to compensate for the reduced layer count. This composite formulation enhances crack resistance and structural durability in the single-layer design, preventing the weight reduction from compromising reliability.
Solution Approach 2:
The patent changes the chemical and physical parameters of the rubber compound, including filler content, reinforcing agent types and concentrations, and curing characteristics. These parameter adjustments optimize the rubber matrix properties to prevent crack initiation and propagation in the simplified single-layer structure, maintaining reliability despite reduced material quantity.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The invention relates to a tyre made up of a single layer of textile reinforcing elements. According to the invention, the carcass reinforcement layer has a breaking force per unit width greater than 3000 daN/dm, the carcass reinforcement layer is the only layer of reinforcing elements present radially inside the bead wire, the secant elastic moduli under tension at 10% elongation MC, MB1 satisfy the relationship MC/MB1<2 and the secant elastic moduli under tension at 10% elongation MC, MB2 satisfy the relationship MC/MB2<2.