Passenger Radial Tire Tread Layout for Durable RF Communication
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Solution Overview
Problem
Existing pneumatic tires face challenges in achieving both durability and communication performance of communication devices due to tire deformation affecting RF tags and other communication devices, with protective materials increasing weight and reducing performance.
Innovation Solution
A pneumatic radial tire design with a narrow cross-sectional width, large outer diameter, and non-metallic belt cords, incorporating a communication device in the tread, and specific groove configurations to enhance durability and communication performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a protective material is used to cover the communication device, then the durability of the communication device is improved, but the weight of the tire increases and communication performance may be reduced
Solution Approach 1:
The patent uses the tread rubber itself as an intermediary protective layer for the communication device. The communication device is embedded within the tread structure, where the tread rubber provides natural protection without requiring additional protective materials. This resolves the contradiction by using the existing tire structure (tread) to protect the communication device while avoiding extra weight from separate protective coverings.
2Reliability
If a protective material is used to cover the communication device, then the durability of the communication device is improved, but the communication performance may be reduced
Solution Approach 1:
The tread rubber serves as a natural intermediary that provides protection while maintaining communication performance. By embedding the communication device within the tread structure rather than covering it with separate protective materials, the patent ensures that the rubber's natural properties provide adequate protection without interfering with radio frequency signals, thus maintaining communication effectiveness.
3Loss of energy
If the cross-sectional width is reduced to improve fuel efficiency, then rolling resistance is reduced, but the tire structure must be optimized to maintain durability and communication performance
Solution Approach 1:
The patent applies parameter changes by optimizing the cross-sectional width to outer diameter ratio (SW/OD ≤ 0.26) and specifying groove width parameters (≥2mm). These parameter optimizations allow the tire to achieve reduced rolling resistance and improved fuel efficiency while maintaining the structural integrity needed to protect the communication device and ensure its durability.
Data Source
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AI summary
The pneumatic radial tire for passenger vehicles of this disclosure comprises a belt consisting of one or more belt layers, a tread, and a communication device. A cross-sectional width SW and an outer diameter OD of the tire satisfy a predetermined relationship, belt cords constituting the belt layer are non-metallic cords, and the communication device is installed in the tread.