Tire Pressure Control Circuit Using Spool Valve
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Solution Overview
Problem
Existing tire wheel pressure control systems are complex, difficult to manage, and require multiple air lines and complex rotating joints, making them unsuitable for existing machines not specifically designed for them, and they lack a simple and effective method for managing tire pressure.
Innovation Solution
A control circuit that uses a single feeding line connected to a compressor, featuring spool valves and check valves to manage the inflation and deflation of both the inner tube and external tire volume without electrical or electronic control, allowing for efficient pressure management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If multiple separate lines are used for inflating/deflating the inner tube and tire volume, then the tire pressure control is more precise, but the device complexity increases significantly
Solution Approach 1:
The patent merges the control of inner tube and tire volume inflation/deflation into a single integrated circuit with one feeding line. The spool valve selectively directs compressed air from this single line to either the inner tube or the tire volume, eliminating the need for multiple separate lines and complex rotating joints while maintaining precise pressure control capability.
Solution Approach 2:
The single feeding line is designed to serve multiple functions: it can inflate the inner tube, inflate the tire volume, and work in combination with the spool valve to enable deflation operations. This multi-functional design reduces the number of components needed while maintaining full pressure control capability.
2Ease of operation
If complex rotating joints are used to feed multiple air lines, then both inner tube and tire volume can be controlled, but the ease of operation and adaptability to existing machines decreases
Solution Approach 1:
The patent combines multiple air line functions into a single feeding line that connects to the rim through a simple joint. This eliminates the need for complex rotating joints that would be required to manage multiple separate lines, thereby improving ease of operation and making the system adaptable to existing machines without specialized components.
Solution Approach 2:
The spool valve automatically directs air flow to the appropriate component (inner tube or tire volume) based on pressure differential, eliminating the need for complex electronic control systems or manual operation. This self-regulating mechanism simplifies operation and enhances adaptability to various machine types.
3Device complexity
If a single feeding line is used with spool valves, then the device complexity is reduced, but the inflation/deflation time may increase
Solution Approach 1:
The spool valve dynamically switches between connecting the feeding line to the inner tube or to the tire volume based on real-time pressure conditions. This dynamic switching capability allows the system to efficiently manage air flow distribution, maintaining fast inflation/deflation response times despite using a single feeding line, by optimizing the sequence and routing of air delivery.
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 enables efficient and simplified tire pressure management, reducing inflation/deflation time and allowing adaptation to various machines without additional electrical components, improving operational efficiency and compatibility.
Implementation Method 1
The first spool valve (V2) is switchable in the second position if the pressure in the first volume (A) overcomes a predetermined pressure
Implementation Method 2
The control circuit may be provided with at least a first check valve (C1), placed along the controlled pressure line (C) for preventing backflow from the first spool valve (V1)
Data Source
AI summary
A control circuit for controlling the pressure of a wheel enclosing a first volume and a second volume includes a controlled pressure line, a first line, connectable to the controlled pressure line and connected to the first volume for introducing air inside the first volume, and a second line, connectable to the controlled pressure line and connected to the second volume for introducing air inside the second volume. The control circuit further includes a first spool valve, which is a three way-two positions valve, having a first position in which the controlled pressure line is connected to the first line, and a second position, in which the controlled pressure line is connected to the second line. The first spool valve switches from the first position to the second position if the pressure in the first volume exceeds a predetermined pressure.