Tyre Baffle Liner Venting for Shockwave and Pressure Control
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Solution Overview
Problem
Pneumatic tyres face issues with shockwave mitigation and pressure regulation, leading to reduced controllability, increased rolling resistance, and decreased energy efficiency, particularly in vehicles with mechanical and computerized suspension systems.
Innovation Solution
A baffle liner is integrated into the inner liner of a tyre, featuring vents and blisters to dissipate shockwaves and modulate air pressure, maintaining pneumatic suspension effectiveness and reducing pressure differentials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If mechanical or computerised suspension systems are used to reduce vibration, then ride comfort is improved, but device complexity and cost increase
Solution Approach 1:
The patent replaces complex mechanical or computerised suspension systems with a simpler pneumatic shock absorption system. The inner liner incorporates porous material and pressure equalisation channels that passively dissipate shockwaves through air pressure equalisation, eliminating the need for active mechanical suspension components while maintaining vibration reduction benefits
Solution Approach 2:
The shock absorption system is self-regulating through the inherent properties of the porous material and air pressure dynamics. The pressure equalisation channels automatically regulate shockwave propagation without requiring external control systems, sensors, or power sources, making the system self-service and eliminating complex control mechanisms
2Device complexity
If inner tubes are used to provide rigidity, then tyre structure is simplified, but energy efficiency decreases due to higher rolling resistance
Solution Approach 1:
The inner liner incorporates porous material that allows controlled air flow through the tyre structure. This porous design enables pressure equalisation and shockwave dissipation while maintaining the simplicity of a tubeless tyre structure, reducing rolling resistance compared to traditional inner tube designs without compromising structural integrity
Solution Approach 2:
The patent uses pneumatic principles by incorporating pressure equalisation channels and shockwave dissipation pathways within the inner liner. The air pressure dynamics within the tyre are actively managed through these channels, allowing the tyre to maintain optimal pressure distribution and reduce rolling resistance while eliminating the need for separate inner tubes
3Loss of energy
If harder and narrower tyres are used to reduce drag, then energy efficiency is improved, but grip and handling characteristics worsen
Solution Approach 1:
The patent changes the internal pressure distribution parameters within the tyre using the porous inner liner and pressure equalisation channels. By dynamically regulating air pressure and dissipating shockwaves, the tyre can maintain higher pressures for reduced drag while ensuring even pressure distribution across the contact patch, preserving grip and handling characteristics despite the harder, narrower tyre design
4Temperature
If larger wheel diameter is used to reduce vibration, then ride comfort is improved, but tyre sidewall size is reduced decreasing air volume and suspension effectiveness
Solution Approach 1:
The porous inner liner material provides shock absorption and vibration reduction functionality without requiring increased air volume. The porous structure itself acts as a vibration dampener, allowing the tyre to maintain smaller sidewalls and reduced air volume while still effectively reducing vibration through the material's inherent shock absorption properties
Solution Approach 2:
The patent substitutes the mechanical function of large air volume suspension with the pneumatic shockwave dissipation mechanism in the porous inner liner. The pressure equalisation channels and porous material structure replace the need for large air cushions, providing vibration reduction through a more compact design that doesn't require reduced sidewall height
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enhances tyre controllability, reduces rolling resistance, and improves energy efficiency by diffusing shockwaves and regulating air pressure, allowing higher tyre pressures for better grip and handling.
Implementation Method 1
The at least one surface formation is configured to reduce the effects of a shock event external to the tyre by dissipating shockwaves produced by the shock event
Implementation Method 2
by modulating air pressure spikes at the point of impact
Data Source
Figure 1
Figure 2a
Figure 2b
AI summary
A baffle liner for attachment to an inner liner of a tyre, the baffle liner comprising at least one sheet of material, and at least one surface formation. The surface formation reduces the effects of a shock event external to the tyre by dissipating shockwaves produced by the shock event and by modulating air pressure spikes at the point of impact.