Pneumatic Tire Tread Groove Layout for Snow Grip and Rigidity
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing vehicle tire strip designs face challenges in optimizing snow performance while maintaining good dry performance and drainage properties, as modifications often lead to deterioration in these areas.
Innovation Solution
The introduction of sack grooves with a width of 1.0 mm to 6.0 mm on the tire strip periphery, angled between 15° to 20°, and forming a y-like groove combination with the cross-ribs, enhances snow accumulation and compression without compromising dry performance or drainage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If blind grooves are made wider to improve snow accumulation, then snow performance improves, but tread rigidity decreases
Solution Approach 1:
The blind groove design is segmented with the first groove section having a wider bottom (4-8 mm) specifically for snow accumulation, while the groove gradually narrows toward the tread block interior. This segmentation allows snow accumulation in the wider section while maintaining tread rigidity through the narrower sections.
Solution Approach 2:
The groove geometry is optimized in multiple dimensions: the width varies along the groove length (wider at the opening, narrower deeper in), and the opening angle is specifically controlled (60°-90°). This multi-dimensional geometric optimization allows snow accumulation capability while preserving structural rigidity.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The invention relates to a pneumatic vehicle tyre having a tread with at least one profile block row (3) which is delimited at each side by a respective circumferential channel (4, 5) and which is divided into profile blocks (3a) by a multiplicity of transverse channels (6) which open into both circumferential channels (4, 5) and which run parallel to one another as seen in plan view, wherein each transverse channel (6), as seen in plan view, is made up of two channel sections (6a, 6b) which adjoin one another at an obtuse angle (γ) of 100° to 160°. In each profile block (3a), there is formed a blind channel (7) which opens into both channel sections (6a, 6b) of a transverse channel (6) and which is elongate as seen in plan view and which, with the transverse channel (6), forms a channel combination running in a Y shape as seen in plan view, which blind channel (7) has a width (bR), measured at the tread periphery, of 1.0 mm to 6.0 mm and runs at an angle (δ) of 0° to 60° with respect to the circumferential direction.