Load-Based Tire Inflation via Mechanical Suspension Feedback
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Solution Overview
Problem
Existing tire inflation systems for heavy-duty vehicles are impractical and unreliable due to their reliance on electronic components and inability to automatically adjust tire pressure based on varying loads, leading to under-inflation, which can cause tire failure, increased fuel consumption, and compliance issues.
Innovation Solution
A load-based tire inflation system that continuously monitors and adjusts tire pressure using mechanical and pneumatic components, such as air springs and ride-height control valves, to maintain optimal pressure without electronic processors, ensuring automatic and continuous adjustment based on the vehicle's load.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If electronic tire inflation systems are used, then tire pressure can be monitored and adjusted, but the system becomes complex and unreliable due to electronic components
Solution Approach 1:
The patent replaces electronic sensors, processors, and actuators with a purely mechanical system. A diaphragm chamber responds to tire pressure changes mechanically, actuating valves through mechanical linkages to inflate or deflate tires automatically, eliminating all electronic components while maintaining automated functionality
Solution Approach 2:
The mechanical system operates autonomously by sensing tire pressure changes and automatically actuating the appropriate valves without human intervention or electronic control. The diaphragm chamber self-actuates based on pressure differential, creating a self-regulating system that maintains optimal tire pressure
2Adaptability or versatility
If manual tire pressure checking is performed, then system complexity is reduced, but tire pressure cannot be continuously adjusted based on varying loads
Solution Approach 1:
The system continuously monitors tire pressure through the diaphragm chamber, which responds to pressure changes and automatically actuates valves to maintain optimal pressure. This closed-loop feedback mechanism adapts to varying vehicle loads without requiring electronic sensors or processors
Solution Approach 2:
The system dynamically adjusts tire pressure in real-time based on actual tire pressure conditions and vehicle load variations. The mechanical components respond continuously to pressure changes, enabling adaptive pressure regulation rather than static pre-set pressure levels
3Reliability
If tire pressure is not continuously monitored, then operational costs are reduced, but under-inflation causes tire failure and increased fuel consumption
Solution Approach 1:
The system continuously maintains optimal tire pressure through automatic mechanical actuation, ensuring tires remain properly inflated at all times during vehicle operation. This continuous pressure regulation prevents under-inflation conditions that would increase fuel consumption and tire failure risk
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
This solution improves fuel economy, extends tire life, reduces downtime and operational costs, and ensures compliance with tire pressure regulations by maintaining optimal tire pressure without the need for electronic components.
Implementation Method 1
an air spring positioned between a frame member and an axle of the heavy-duty vehicle and having a fluid pressure that varies in response to a load of the heavy-duty vehicle
Data Source
AI summary
A load-based tire inflation system for a heavy-duty vehicle comprises at least one source of fluid pressure, suspension structure of the heavy-duty vehicle, a tire and wheel assembly and a system to control fluid pressure in the tire and wheel assembly. The suspension structure is located between a frame member and an axle and has a condition indicative of a weight of the heavy-duty vehicle. The tire and wheel assembly is operatively mounted to the axle and is in fluid communication with the source of fluid pressure. The control system controls fluid pressure in the tire and wheel assembly in response to the condition of the suspension structure.