Valve Assembly Piston Area Ratio for Tire Pressure Regulation
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Solution Overview
Problem
Conventional wheel valves for tire inflation systems face performance issues due to temperature and pressure variations, limiting their operational range and efficiency.
Innovation Solution
The assembly includes a valve system with a housing, base, and cap portions, featuring specific perforations and a piston design that allows for efficient air flow management, enabling operation at higher pressures and wider temperature ranges, and can be integrated with existing wheel valves.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional wheel valves are used, then the valve can perform basic tire inflation function, but the valve suffers from performance issues due to temperature and pressure variations
Solution Approach 1:
The patent modifies the physical parameters of the valve system by introducing a piston with specific area relationships (A1, A2, A3) and a biasing member with calibrated spring rate. These parameter changes enable the valve to maintain reliable performance across expanded temperature and pressure ranges by balancing forces differently than conventional valves.
Solution Approach 2:
The valve assembly is segmented into distinct functional components: a piston divided into multiple surfaces (first surface with area A1, second surface with area A2), a biasing member, and a valve member. This segmentation allows each component to be optimized independently for its specific function while working together to achieve broader operational adaptability.
2Adaptability or versatility
If the piston area ratio is configured with A2 greater than A1 and A3, then the valve can operate at higher pressures and wider temperature ranges, but the device complexity increases
Solution Approach 1:
The piston serves multiple functions simultaneously: it acts as a sealing element, a force transmission component, and a pressure-sensing element. The specific area ratio configuration (A2 > A1 and A2 > A3) allows the same piston structure to handle both normal operation and extended temperature/pressure conditions without requiring entirely separate mechanisms.
Solution Approach 2:
The valve assembly uses the existing pressure differential and thermal expansion forces present in the system to automatically adjust piston position and valve opening. The biasing member provides self-regulating force that compensates for environmental variations without external control, reducing the need for additional complex control systems.
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 provides efficient tire pressure regulation across a broader pressure and temperature range, ensuring reliable operation and quick adjustment of tire pressure without performance diminishment.
Implementation Method 1
The valve is biased towards the lower wall portion by a biasing member to open the valve assembly
Implementation Method 2
A first area is defined by a base perforation, a second area is defined by a space between a piston and a cap portion when the piston is in an open position and corresponds to an area of a side of a right cylinder, and a third area is defined by a cap perforation, wherein the second area is greater than the first area and the third area
Data Source
Figure 1
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Figure 3~4
AI summary
An assembly for a tire inflation system includes a valve assembly. The valve assembly includes a housing. The housing includes a base portion (56) and a cap portion (58). The base portion has a base perforation (90). The base perforation (90) is in fluid communication with a base cavity. The cap portion (58) is attached to the base portion (56). The cap portion (58) has a cap perforation (54) formed therein. The cap perforation (54) is in selective fluid communication with the base cavity. A piston (62) is disposed in the base cavity. A first area (A1) is defined by the base perforation (90), a second area (A2) is defined by the lateral area of a cylindrical space between the piston (62) and the cap portion (58), and a third area (A3) is defined by the cap perforation (54). The second area (A2) is greater than the first area (A1) and the third area (A3).