Heavy-Duty Tire Buttress Recess Cooling Under High Load
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Solution Overview
Problem
Heavy duty tires experience increased warping and heat generation in buttress portions due to high load-bearing capacity, which limits the effectiveness of existing cooling methods.
Innovation Solution
The design incorporates a recess portion in the buttress portion with a diameter-direction air entry and exit promotion portion and an air-catching wall portion, optimized with specific slope angles to enhance airflow and turbulence, facilitating improved cooling by directing air flow effectively into and out of the recess portion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If recess portions are formed in the buttress portion to enable cooling, then cooling effect is improved to some extent, but cooling performance is insufficient when carried load is large and warping increases
Solution Approach 1:
The invention creates localized airflow channels within the buttress portion by forming recesses with specific geometric features (inclined surfaces and vertical walls). These local structural modifications guide air flow directly to high-temperature regions, providing targeted cooling where warping and heat generation are most severe under high load conditions.
Solution Approach 2:
The invention transitions from simple surface recesses to three-dimensional airflow paths by incorporating inclined surfaces that direct air toward the rear and vertical walls that trap and concentrate airflow at the floor portion. This multi-dimensional air channel design enhances cooling efficiency by creating complex airflow patterns that penetrate deeper into the buttress portion structure.
2Productivity
If air flows shallowly along the recess portion surface without reaching the floor portion, then air trapping is reduced, but cooling effect at the floor portion is insufficient
Solution Approach 1:
The inclined surface is positioned at the front of the recess portion to preliminarily direct incoming air toward the floor portion before the air can escape. This preliminary directional guidance ensures that air is channeled into the recess and forced toward the floor, maximizing contact time and cooling effect at the target region.
Solution Approach 2:
The combination of inclined surfaces and vertical walls creates a curved, funnel-like airflow path that naturally guides air toward the floor portion. The geometric configuration uses surface curvature and angular transitions to redirect air flow, preventing shallow passage and ensuring deep penetration into the recess 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 configuration enhances the cooling performance of the buttress portion, effectively managing heat generation and reducing temperature rises, particularly in areas prone to warping.
Implementation Method 1
When this heavy duty tire rotates, a speed difference occurs between the tire surface and the surrounding air, and air flows into the recess portion formed in the buttress portion
Implementation Method 2
The diameter direction air entry and exit promotion portion includes the slope that gradually decreases in depth from the tire surface, and facilitates access of air toward the floor portion
Implementation Method 3
Because the air-catching wall portion is at a greater angle relative to the tire surface than the slope, turbulence may be formed in air flowing thereto from the tire diameter-direction air entry and exit promotion portion
Implementation Method 4
an effect of cooling the floor portion of the recess portion may be improved. Thus, because this recess portion is provided in the buttress portion, the buttress portion may be effectively cooled while the heavy duty tire is rotating
Data Source
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AI summary
A heavy duty tire 10 includes a recess portion 34, a diameter-direction air entry and exit promotion portion 38 and an air-catching wall portion 44. The recess portion 34 is formed in a buttress portion 26 and opens to a tire outer side. The diameter-direction air entry and exit promotion portion 38 is disposed at one side of a floor portion 40 in a tire diameter direction and includes a slope 52 that, from the floor portion 40 toward a tire surface, gradually decreases in depth from the tire surface. The diameter-direction air entry and exit promotion portion 38 facilitates access of air toward the floor portion. The air-catching wall portion 44 is disposed at the opposite side of the floor portion 40 from the diameter-direction air entry and exit promotion portion 38. The air-catching wall portion 44 has a greater angle relative to the tire surface than the slope.