Tire Inflation Seal Health Monitoring Using Pressure Feedback
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Solution Overview
Problem
Tire inflation systems face degradation issues with rotary air seals, leading to inefficiencies and shortened component life, as existing methods lack effective monitoring and maintenance strategies for seal health.
Innovation Solution
A method involving pressure measurements taken by a pressure transducer and communicated to an electronic control unit and telematics device, which assesses seal health through pressure thresholds and degradation patterns, enabling timely repair or replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If rotary air seals are used to transfer pressurized air in a tire inflation system, then the system can measure and adjust tire pressure automatically, but the seals degrade over time leading to system failure and reduced component life
Solution Approach 1:
The system performs preliminary monitoring of seal health by continuously measuring pressure differential across the seal and comparing it to threshold values. This early detection allows the system to identify seal degradation before complete failure occurs, enabling proactive maintenance and preventing system breakdown.
Solution Approach 2:
The system establishes a feedback loop where pressure measurements from transducers on both sides of the seal are continuously monitored. The pressure differential feedback signal is processed by the control unit to detect changes in seal performance, allowing real-time assessment of seal health and automatic adjustment of maintenance requirements.
2Device complexity
If seal degradation is not monitored, then the system structure remains simple, but other components wear unnecessarily shortening their effective life
Solution Approach 1:
The existing pressure transducers and control unit, originally designed for tire pressure measurement and adjustment, are repurposed to also monitor seal health. The same sensors and processing electronics serve dual functions: maintaining tire pressure and detecting seal degradation, thereby avoiding additional monitoring hardware while extending component life.
3Measurement precision
If manual seal inspection methods are used, then the system requires less sophisticated sensors, but the seal cannot be monitored continuously for early degradation detection
Solution Approach 1:
The seal effectively monitors its own health condition by allowing pressure measurements to be taken across its interface. The seal's degradation state is revealed through its own pressure differential performance, eliminating the need for separate inspection mechanisms or additional sensing hardware beyond what is already required for system operation.
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 approach allows for early identification and replacement of degraded seals, prolonging system life and maintaining operational vehicle performance.
Implementation Method 1
obtaining a first pressure of the tire channel with the pressure sensor; obtaining a second pressure of the tire channel with the pressure sensor
Data Source
AI summary
Systems and methods for determining the health of a seal in a tire inflation system are provided. In one example, a method of determining the health of a seal of a tire inflation system on a vehicle includes obtaining one or more pressure measurements of a tire of the vehicle with a pressure transducer in communication with an electronic control unit and sending the one or more pressure measurements to a computer network via a communication network that receives signals from the electronic control unit, the communication network including a telematics device in communication with the computer network, wherein the computer network is configured to determine the health of the seal based on the one or more pressure measurements communicated by the telematics device.