Engine Component Damage Estimation via Fuel Rate Temperature
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Solution Overview
Problem
Existing systems for determining when internal combustion engine components require replacement fail to accurately account for temperature-induced changes, particularly in high-performance engines operating at elevated temperatures, leading to inaccurate damage estimation.
Innovation Solution
A method and system that estimates component damage in internal combustion engines by receiving a fuel rate signal, estimating temperature, calculating incremental damage based on temperature, and updating a cumulative damage value, with a control unit configured to output notifications for maintenance or replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If engine components operate at elevated temperatures for extended periods, then engine performance is improved, but temperature-induced changes cause inaccurate damage estimation
Solution Approach 1:
The patent applies parameter changes by using temperature values as a key parameter to adjust damage estimation. The system estimates temperature of engine components based on fuel rate signals and other operating parameters, then uses these temperature values to calculate incremental damage amounts. This resolves the contradiction by dynamically adjusting damage estimation according to temperature conditions, ensuring accuracy even when components operate at elevated temperatures for extended periods.
2Ease of operation
If existing systems use engine hours for component replacement timing, then replacement scheduling is simplified, but temperature-induced changes are not accounted for leading to inaccurate estimates
Solution Approach 1:
The patent applies dynamics by transitioning from static engine-hour-based replacement scheduling to a dynamic damage accumulation model. The system continuously estimates temperature values during operation and calculates incremental damage amounts based on these temperature variations. This dynamic approach maintains ease of operation through automated control unit calculations while significantly improving damage estimation accuracy by accounting for temperature-induced changes throughout the component's service life.
3Device complexity
If damage estimation systems do not account for temperature, then system complexity is reduced, but accuracy deteriorates for high-performance engines
Solution Approach 1:
The patent applies universality by integrating temperature-based damage estimation into existing engine control units that already perform multiple functions including fuel management and emission control. The control unit utilizes available fuel rate signals and operating parameters to estimate component temperatures and calculate damage accumulation, making the damage estimation system a multi-functional capability of the existing control unit rather than a separate complex system. This approach maintains relatively low system complexity while improving accuracy for high-performance engines.
Data Source
AI summary
A method for estimating damage of a component of an internal combustion engine includes receiving a fuel rate signal indicative of a fuel rate of the internal combustion engine and estimating a temperature value of the component of the internal combustion engine based on at least the received fuel rate signal. The method also includes estimating an incremental amount of damage of the component of the internal combustion engine based on the estimated temperature value of the component of the internal combustion engine, updating a cumulative amount of damage of the component of the internal combustion engine based on the estimated incremental amount of damage, and outputting a notification based on at least the cumulative amount of damage of the component of the internal combustion engine.