Self-Reinflating Tire Hollow Channel Peristaltic Air Pumping
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing tire pressure maintenance solutions are complex and costly, and self-reinflating tires face challenges in efficient air transport and pressure regulation.
Innovation Solution
A device featuring a hollow compressible channel along the tire perimeter with a ring attached to the inner side, allowing for secure and long-lasting air transport with a control element and valve system, including a shape memory chamber and power generator, to manage tire pressure effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a tire is provided with air feed connected to an external pressure source, then tire pressure can be maintained, but the device complexity and purchase costs increase
Solution Approach 1:
The patent implements a self-reinflating tire system where the tire automatically maintains its own pressure without external intervention. The hollow compressible channel acts as a self-contained air transport mechanism that utilizes the tire's own deformation during operation to pump air from the atmosphere into the tire interior, eliminating the need for external pressure sources or complex control systems.
Solution Approach 2:
The patent employs pneumatic principles by using a hollow compressible channel that functions as a peristaltic pump. The channel's cross-section is compressed by the tire wall deformation during rolling, creating pressure gradients that drive atmospheric air through the channel and into the tire. This pneumatic mechanism replaces complex mechanical or electronic pressure maintenance systems.
2Productivity
If self-reinflating tires use peristaltic chambers in the tire wall, then air transport is achieved, but the chamber compression to zero cross-section is inefficient and complex
Solution Approach 1:
Instead of compressing the chamber cross-section to zero as in traditional peristaltic pumps, the patent inverts the approach by having the chamber maintain its structural integrity while the surrounding tire wall deforms. The hollow compressible channel is positioned such that the tire wall compression indirectly compresses the channel, eliminating the need for the channel itself to be reduced to zero cross-section while maintaining effective air pumping action.
Solution Approach 2:
The hollow compressible channel is nested within the tire structure, specifically positioned in the tire wall or adjacent to it. The channel is embedded such that the tire wall deformation naturally compresses the channel during operation, creating a nested arrangement where the outer tire structure provides the compression mechanism for the inner air transport channel, simplifying the overall system.
3Productivity
If the chamber is periodically completely pressed down or broken crosswise, then air is pushed ahead, but this creates vacuum and reduces pumping efficiency
Solution Approach 1:
The hollow compressible channel is designed with sufficient initial volume and structural characteristics that provide a cushioning effect during compression. The channel maintains enough compressibility to accommodate the tire wall deformation without being completely collapsed, preventing the formation of harmful vacuum conditions while still effectively pumping air forward during the compression cycle.
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
The solution simplifies tire pressure maintenance, reduces complexity and costs, and ensures secure and efficient air transport and regulation, maintaining optimal tire pressure across various operational conditions.
Implementation Method 1
The air feed chamber is located in the tire wall or next to it. With the tire deformation advancing by rolling, the chamber is periodically completely pressed down or broken crosswise; advancing chamber compression down to zero cross-section pushes the medium contained within the chamber ahead, leaving a vacuum behind. A hose-shaped chamber placed in the tire wall or next to it, along the tire perimeter, works as a peristaltic pump.
Implementation Method 2
the chamber is periodically completely pressed down or broken crosswise; advancing chamber compression down to zero cross-section pushes the medium contained within the chamber ahead
Data Source
Figure 1a~3a
Figure 4a~5a
Figure 6a~7c
AI summary
A device for transport of air in the tire P or close to it consisting of a chamber K in the shape of a hollow compressible channel, placed along at least a part of the tire perimeter, characterized by the fact that a ring OK is placed at the inner side of the chamber K with the distance of its outer side from the tire axis of rotation equal to 1 to 1.1 multiple of the distance of the bottom side of the chamber K from the axis of rotation of the tire P.