Pneumatic Tire Tread Pattern for Wear and Drainage Balance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Pneumatic tires face issues with heel-and-toe wear and deteriorated drainage performance due to existing tread designs that either suppress leading side wear or compromise drainage.
Innovation Solution
The tire features a tread surface sectioned by circumferential grooves with inclined grooves extending from the mediate area to the shoulder area, where the leading side wall has a greater angle of inclination than the trailing side, and dimples are formed on the leading side of blocks in the mediate area to balance wear and maintain drainage performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If a concave portion is formed along the inclined groove in the entire side wall of the block to reduce compression rigidity and prevent pattern noise deterioration, then pattern noise is improved, but heel-and-toe wear deteriorates and drainage performance is compromised
Solution Approach 1:
Instead of forming a concave portion along the entire side wall, the patent applies local quality by creating the concave portion only in specific regions. The concave portion is formed in the side wall but limited in extent, allowing rigidity to be reduced locally for noise control while maintaining sufficient rigidity in other areas to prevent heel-and-toe wear and preserve drainage performance.
Solution Approach 2:
The patent applies partial action by forming the concave portion only in part of the side wall rather than along the entire length. This partial modification is sufficient to reduce pattern noise while avoiding excessive rigidity reduction that would cause heel-and-toe wear and compromise drainage.
Data Source
AI summary
A pneumatic tire includes a tread surface which is sectioned into a center area, a mediate area arranged in an outer side of the center area, and a shoulder area arranged in an outer side of the mediate area, wherein inclined grooves are formed spaced apart in a tire circumferential direction, the inclined grooves continuously extending from the mediate area to the shoulder area, in blocks in the mediate area and the shoulder area sectioned by the inclined grooves, an angle of inclination of a side wall on a leading side with respect to a normal direction of the tread surface is greater than an angle of inclination of a side wall on a trailing side with respect to a normal direction of the tread surface, and a plurality of dimples are formed in the side wall on the leading side of the block in the mediate area.