Vehicle Wheel Thermal Function Structure for Brake Heat Dissipation
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Solution Overview
Problem
Vehicle wheels with fiber-reinforced plastic components face thermal stress issues during braking, leading to mechanical property degradation and potential damage due to high thermal loads, and existing heat protection structures can cause uneven mass distribution and adverse thermal effects.
Innovation Solution
A thermal function structure with higher thermal conductivity than the supporting structure is applied to the wheel rim and disc, extending over the surface to dissipate thermal energy from high-stress areas to less-stress areas, utilizing materials like copper foil or carbon fibers for efficient heat dissipation and radiation management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a heat protection structure with heat-reflecting layer and insulating layer is used, then thermal protection of the supporting structure is improved, but mass distribution becomes uneven and thermal energy dissipation is adversely affected
Solution Approach 1:
The patent changes the thermal conductivity parameter of the heat protection structure by introducing a thermally conductive layer with metal fibers or foil, transforming it from an insulating structure to a heat-dissipating structure that actively conducts thermal energy away from the supporting structure
Solution Approach 2:
The patent creates a composite heat protection structure combining organic fibers (glass, basalt, carbon) with metal fibers or foil, achieving both thermal protection and improved heat dissipation through the synergistic combination of insulating and conductive materials
2Reliability
If a heat-reflecting layer is used to reduce thermal energy input, then thermal protection is improved, but heat emissivity is reduced and local heating occurs
Solution Approach 1:
Instead of reflecting heat away from the supporting structure, the patent inverts the approach by using a thermally conductive layer that actively conducts and dissipates heat from the supporting structure to surrounding areas, transforming the heat protection mechanism from passive reflection to active heat distribution
Solution Approach 2:
The patent converts the harmful thermal energy that would otherwise cause local heating and damage into a beneficial heat distribution process, where the thermally conductive layer channels heat away from critical areas to less sensitive regions of the wheel
3Weight of moving object
If fiber-reinforced plastic is used for wheel rim and disc, then weight is reduced, but thermal stress resistance is insufficient under high thermal loads
Solution Approach 1:
The patent creates a composite heat protection structure combining organic fibers (glass, basalt, carbon) with metal fibers or foil, achieving both thermal protection and improved heat dissipation through the synergistic combination of insulating and conductive materials
Solution Approach 2:
The patent changes the thermal conductivity parameter of the heat protection structure by introducing a thermally conductive layer with metal fibers or foil, transforming it from an insulating structure to a heat-dissipating structure that actively conducts thermal energy away from the supporting structure
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
This design effectively reduces thermal stress on the supporting structure, enhancing operational reliability by efficiently dissipating heat and minimizing material damage, while maintaining lightweight and mechanical integrity.
Implementation Method 1
A thermal function structure, which is thermally more conductive than the supporting structure, is applied to the wheel rim and/or wheel disc, at least on one side of the supporting structure facing the brake system
Implementation Method 2
The thermal energy generated by the brake system is essentially dissipated from an area of the wheel rim and/or the wheel disc that is subject to high thermal stress as a result to at least one area of the wheel rim and/or the wheel disc that is subject to less thermal stress
Data Source
Figure 1
Figure 1a
Figure 1b
AI summary
The invention relates to a vehicle wheel which is connectable to a brake system, wherein the wheel rim and/or wheel disc of said vehicle wheel has a supporting structure made from fibre-reinforced plastic. It is proposed that the wheel rim (2) and/or the wheel disc (3) at least on a side of the supporting structure (11) that faces the brake system (6) has a thermal function structure (7) which is thermally more conductive than the supporting structure (11) and is arranged extended in such a manner that thermal energy generated by the brake system (6) is substantially removed from a region of the wheel rim (2) and/or of the wheel disc (3) that is thereby thermally highly loaded into at least one thermally less loaded region of the wheel rim (2) and/of the wheel disc (3).