Tire Inflation Assistance with Temperature Compensation
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Solution Overview
Problem
Current tire inflation technologies fail to accurately account for temperature variations, leading to under-inflation and imbalance issues, which can affect vehicle performance and driver confidence due to frequent and often misunderstood alarms.
Innovation Solution
A method and device using tire pressure and temperature sensors, along with computing means, to detect non-critical under-inflation conditions and notify the driver of optimal inflation times when the tires are not heated and not exposed to temperature differences, thereby reducing the frequency of inflation and improving tire performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If tire inflation is performed using standard pressure values without temperature compensation, then the inflation process is simple and quick, but the tires become under-inflated when cooled, leading to pressure imbalance and reduced vehicle performance
Solution Approach 1:
The system performs preliminary detection of tire temperature and pressure conditions before inflation is initiated. By assessing whether tires are in a heated state and calculating compensated pressure values in advance, the system ensures accurate inflation targets are established before the inflation process begins, preventing under-inflation issues.
Solution Approach 2:
The system continuously monitors tire temperature and pressure, providing feedback to both the inflation process and the driver. Temperature and pressure data are used to dynamically adjust recommended pressure values, and the system provides visual feedback through indicators showing when optimal inflation conditions are present, enabling precise pressure management.
2Loss of time
If tire inflation is performed while tires are in a heated state, then inflation can be carried out immediately without waiting for cooling, but the pressure readings are inaccurate due to thermal expansion, resulting in under-inflation after cooling
Solution Approach 1:
The system changes the pressure parameter by calculating a compensated pressure value that accounts for temperature effects. Instead of using the raw pressure reading from heated tires, the system adjusts the target pressure based on temperature data, allowing accurate inflation targets to be set regardless of tire temperature conditions.
Solution Approach 2:
The system performs preliminary assessment of tire temperature and calculates the appropriate compensated pressure value before inflation begins. This advance calculation ensures that even if tires are heated, the inflation target is accurately determined to account for thermal expansion, eliminating the need to wait for cooling.
3Reliability
If the system provides frequent alarms for under-inflation conditions, then driver awareness of tire issues is increased, but driver confidence decreases due to misunderstood and unnecessary alarms
Solution Approach 1:
The system performs preliminary analysis of multiple conditions (temperature, pressure, rate of pressure loss) before generating an alarm. By assessing whether the under-inflation is critical or non-critical and whether optimal inflation conditions are present, the system provides timely and accurate information, reducing unnecessary alarms and improving driver confidence.
Solution Approach 2:
The system provides differentiated feedback through distinct visual indicators for critical versus non-critical conditions, and for optimal versus non-optimal inflation timing. This nuanced feedback system gives drivers accurate information about the actual tire state and appropriate actions, reducing confusion and improving confidence in the monitoring system.
4Measurement precision
If temperature compensation is implemented using multiple temperature sensors, then measurement accuracy is improved, but device complexity and cost increase
Solution Approach 1:
The system uses existing multi-functional temperature sensors that serve both tire temperature monitoring and ambient temperature detection functions. By making the temperature measurement system multi-functional, the patent avoids adding dedicated sensors while still obtaining both temperature data needed for accurate pressure compensation calculations.
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 optimizes tire inflation conditions, enhancing vehicle comfort, road holding, and fuel efficiency by providing clear and actionable signals to the driver, reducing unnecessary alarms and improving confidence in tire management systems.
Implementation Method 1
a means for detecting the inflation pressure of the tire
Implementation Method 2
a means for detecting the temperature of the tire
Implementation Method 3
The computing means are supplied with data relating to the temperature of the said tires and compensate for temperature variations on an indicated pressure value
Data Source
AI summary
A device and a method for aiding inflation for a vehicle involves obtaining access to vehicle tire pressure and temperature data, and utilizing an under-inflation detection module and an inflation condition testing module, thus making it possible to carry out a test for detecting a possible optimal inflation condition if the following criteria are met:—there is a non-critical under-inflation state for at least one of the vehicle tires;—the tires are not in an overheated state;—and the tire state is unchanged by sunlight. When the test module determines the optimal inflation condition, a signal is outputted. Such a method causes tire inflation to be carried out under favorable conditions actually corresponding to the reference value provided by the manufacturers.