Tire Wear Evaluation Using Running Distance and Wear State
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Solution Overview
Problem
Conventional systems fail to consider tire wear when evaluating driving efficiency, which can affect the lifespan of vehicle tires due to factors like roaring starts and heavy braking.
Innovation Solution
A tire management apparatus that acquires data on vehicle running distance and tire wear, calculates a wear state value, and evaluates tire condition by comparing it to a reference value, providing users with actionable insights on tire management and potential replacements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional driving evaluation systems are used, then fuel-saving driving can be evaluated, but tire wear cannot be considered
Solution Approach 1:
The evaluation value calculation unit is designed to perform multiple evaluation functions simultaneously - it calculates both fuel-saving driving evaluation values and tire wear evaluation values using the same basic data acquisition infrastructure. This allows the system to evaluate multiple aspects of driving behavior (fuel efficiency and tire wear) without requiring separate systems, thereby resolving the contradiction by making the evaluation system universal.
2Duration of action of moving object
If driving behavior affecting tire wear is not monitored, then evaluation complexity is reduced, but tire lifespan cannot be extended
Solution Approach 1:
The existing data acquisition unit that collects data for fuel-saving evaluation is extended to also collect data necessary for tire wear evaluation (such as acceleration, braking, and steering data). By making the data acquisition system multi-functional, the patent avoids significant increases in system complexity while enabling tire lifespan extension through comprehensive monitoring of wear-affecting driving behaviors.
Solution Approach 2:
The system provides feedback to drivers about their tire wear evaluation values and compares them with reference values, enabling drivers to adjust their behavior to reduce tire wear. This feedback mechanism allows the system to extend tire lifespan by guiding driver behavior without requiring complex direct control systems, thus resolving the contradiction between extending tire life and maintaining system simplicity.
3Ease of operation
If tire wear data is not collected and analyzed, then data processing load is reduced, but appropriate tire management cannot be achieved
Solution Approach 1:
The data acquisition unit is designed to collect data that serves dual purposes - both fuel-saving evaluation and tire wear evaluation. By acquiring comprehensive driving data once and utilizing it for multiple evaluation purposes, the system avoids the need for separate data collection and processing operations, thereby achieving effective tire management without proportionally increasing data processing time.
Solution Approach 2:
The system pre-calculates and stores evaluation values based on collected data, and maintains reference values for comparison. This preliminary processing allows for quick tire management decisions to be made later without requiring intensive real-time data processing, thus resolving the contradiction between achieving effective tire management and minimizing data processing time.
Data Source
AI summary
A tire management apparatus (10) configured to manage a tire mounted on a vehicle, comprises: a data acquisition section (131) configured to acquire data related to a running distance of the vehicle and a wear amount of the tire in a first period; a wear state calculator (132) configured to calculate a wear state value that is a wear rate of the tire or a runnable distance until an end of a wear life of the tire, based on the acquired data; and an evaluation value calculator (133) configured to calculate an evaluation value for the tire, based on comparison between the calculated wear state value and a reference value of the wear state value.