Digital Tire Pressure Control System for Motorsports
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Solution Overview
Problem
Current tire pressure control systems for motorsports vehicles are inaccurate, time-consuming, and prone to mechanical issues, such as diaphragm sticking or overuse, leading to suboptimal performance and frequent maintenance needs, especially during rapid pressure changes or competitions.
Innovation Solution
A digital tire pressure control system with a digital pressure switch and electronic solenoid valve, powered by a battery assembly, that uses pneumatic lines to communicate with the tire, allowing for precise regulation of air pressure to hundredths of a psi, maintaining optimal pressure through heat-induced changes, and is designed for easy setup, installation, and removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a manual pop-off bleeder valve with a diaphragm seat is used to control tire pressure, then the system can bleed off excess pressure, but the bleed-off rate becomes slower as pressure approaches the preferred setting, requiring the valve to be set at a lower than desired pressure to compensate
Solution Approach 1:
The patent replaces the mechanical diaphragm-based pop-off valve with an electronic pressure control system that uses a pressure sensor, microprocessor, and electronically controlled valve. This substitution eliminates the inherent mechanical limitations of the diaphragm system, where the bleed rate naturally decreases as pressure approaches the set point. The electronic system can maintain a consistent bleed rate by actively modulating the valve opening based on real-time pressure feedback, thereby achieving both accurate pressure regulation and fast response times.
Solution Approach 2:
The electronic pressure control system continuously monitors tire pressure via a pressure sensor and uses this feedback to dynamically adjust the electronically controlled valve. This closed-loop feedback mechanism allows the system to maintain precise pressure control by adjusting the valve opening in real-time based on the difference between actual and target pressure, eliminating the need to set the valve at a lower than desired pressure as a compensation strategy.
2Reliability
If the diaphragm pop-off valve is set to a lower pressure to maintain preferred operating pressure during race conditions, then pressure buildup is compensated, but the tire pressure drops during caution periods when the vehicle is idle
Solution Approach 1:
The electronic pressure control system dynamically adjusts the target pressure and bleed rate based on real-time racing conditions detected by the microprocessor. During race conditions, the system maintains the preferred operating pressure by adjusting the valve to compensate for heat-induced pressure buildup. During caution periods when the vehicle is idle, the system detects the changed conditions and adjusts the bleed rate accordingly to prevent unnecessary pressure drops. This dynamic adaptability eliminates the need to set the valve at a lower fixed pressure setting.
Solution Approach 2:
The system changes operational parameters (valve opening duration, bleed rate, target pressure) based on detected racing conditions. The microprocessor monitors vehicle status and modifies the pressure control parameters in real-time, allowing the system to optimize performance for different racing scenarios rather than relying on a fixed pressure setting.
3Measurement precision
If a digital pressure control system with electronic solenoid valve is used, then precise pressure regulation to hundredths of a psi is achieved, but the system requires additional electronic components and power supply
Solution Approach 1:
The patent replaces the simple mechanical diaphragm valve with an electronic pressure control system comprising a pressure sensor, microprocessor, and electronically controlled solenoid valve. While this increases component count, it provides precise digital pressure regulation to hundredths of a psi and enables adaptive control based on racing conditions. The electronic system's intelligence and precision compensate for the added complexity by eliminating the need for manual adjustment and providing consistent, repeatable pressure control.
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 system provides accurate and repeatable pressure regulation, minimizing pressure fluctuations, maintaining optimal tire performance, and reducing maintenance time, while ensuring the apparatus remains balanced and lightweight for efficient vehicle operation.
Implementation Method 1
An electronic solenoid valve communicates with the digital pressure switch by electrical connection so that the electronic solenoid valve can also communicate with the interior of the tire. The electronic solenoid valve operates in a corresponding relationship to the interior of the tire so gas above a set pressure can pass to atmosphere.
Data Source
AI summary
A tire pressure control system includes a tire mounted on a wheel that is connected to an axle, with pneumatic fittings communicating with an interior of this tire. A digital pressure switch has a pair of pneumatic lines that extend from it. These pneumatic lines connect to the pneumatic fittings so that the digital pressure switch communicates with the tire. An electronic solenoid valve communicates with the digital pressure switch by electrical connection to communicate with the interior of the tire. The electronic solenoid valve operates in a corresponding relationship to the interior of the tire so gas above a set pressure can pass to atmosphere. A battery assembly powers and activates the digital pressure switch, and further powers the electronic solenoid valve through the digital pressure switch. A housing houses the digital pressure switch, the electronic solenoid valve, and the battery assembly.