Mechanical Pneumatic Pressure Control for Rapid Tire Deflation
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Solution Overview
Problem
Existing pneumatic pressure control devices for tires are often complex, expensive, and prone to failure due to exposure to harsh environments, and they do not facilitate rapid inflation and deflation, especially in agricultural and off-road conditions.
Innovation Solution
A mechanical pneumatic pressure controller with a biased inflation plunger and variably biased deflation diaphragm or piston, allowing for controlled inflation and rapid deflation without electronic components, using adjustable biasing members and vents to manage pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If electronic pressure control devices are used, then pressure control functionality is achieved, but device complexity and cost increase
Solution Approach 1:
The patent replaces electronic pressure control systems with a purely mechanical pressure control device. The mechanical device uses a diaphragm, spring mechanism, and valve assembly to sense and regulate pressure without any electronic sensors, controllers, or power sources. This substitution eliminates complexity associated with electronics while maintaining pressure control functionality through mechanical equilibrium between spring force and diaphragm pressure response
Solution Approach 2:
The mechanical pressure control device is self-regulating through the natural equilibrium between the spring bias force and the diaphragm response to pressure differential. The system automatically adjusts the valve position based on pressure conditions without requiring external electronic control signals, power supply, or complex sensing systems. The spring-diaphragm mechanism provides inherent feedback and control
2Measurement precision
If electronic sensors and complex components are used, then pressure sensing and control is achieved, but failure risk increases in harsh environments
Solution Approach 1:
The patent eliminates electronic pressure sensors by using a mechanical diaphragm-based pressure sensing mechanism. The diaphragm responds directly to pressure differential between atmospheric pressure and container pressure, translating pressure changes into mechanical displacement that actuates the valve. This mechanical sensing approach is inherently more reliable in harsh environments as it has no electronic components susceptible to moisture, vibration, or extreme temperatures
Solution Approach 2:
The mechanical pressure control device uses simple, robust components that can be easily replaced if needed. The diaphragm, spring, and valve assembly are basic mechanical parts that are inexpensive and can withstand harsh conditions without the fragility of electronic sensors. The simplicity of the mechanical components makes the system more reliable in agricultural and off-road applications
3Productivity
If standard pressure control devices are used, then pressure regulation is achieved, but rapid deflation capability is insufficient
Solution Approach 1:
The patent employs a dynamic valve mechanism where the valve position is continuously adjusted by the balance between spring force and diaphragm pressure response. During deflation, the valve can open fully to allow rapid air discharge, and during inflation, it modulates to control fill rate. This dynamic response enables both rapid deflation and controlled inflation without requiring complex multi-valve systems
Solution Approach 2:
The single valve assembly in the mechanical pressure control device performs multiple functions: it controls both inflation and deflation operations, responds to both pressure increase and decrease conditions, and adjusts flow rate dynamically. This multi-functionality achieves rapid deflation capability without requiring separate valves for inflation and deflation, thereby avoiding increased complexity
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
Enables reliable, rapid, and cost-effective inflation and deflation of tires, eliminating the need for electronic sensors and complex components, suitable for harsh environments.
Implementation Method 1
an inflation plunger which is biased towards a closed condition wherein it inhibits fluid flow from the input chamber to the output chamber
Implementation Method 2
the deflation diaphragm or piston being configured to move away from the vent to an open condition under the influence of fluid pressure in the output diaphragm or piston is sufficiently reduced
Data Source
AI summary
A pneumatic pressure controller includes a body, an inflation plunger, a vent and a deflation diaphragm or piston. The body defines an input chamber and an output chamber for connection of a pneumatic pressure source and pneumatic container respectively. The plunger is biased towards a closed condition wherein it inhibits fluid flow from the input chamber to the output chamber and is movable against the bias to allow such fluid flow for inflation of the pneumatic container. The diaphragm or piston is variably biased towards a closed condition wherein it closes the vent. The diaphragm or piston is configured to move away from the vent to an open condition under the influence of fluid pressure in the output chamber when the inflation plunger is in the closed condition and the variable bias is sufficiently reduced, enabling fluid from the pneumatic container to egress to the atmosphere via the vent.