Engine Diagnosis via Generator Torque Frequency Analysis
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Solution Overview
Problem
Current engine diagnostic methods, such as monitoring engine speed, are inadequate for thoroughly diagnosing engine degradation issues, as they fail to distinguish between different types of degradation and identify specific component problems effectively.
Innovation Solution
A method and system that measure and analyze generator parameters to determine a torque profile, identify frequency content, and diagnose engine conditions, allowing for the differentiation between various engine degradation types based on the frequency content of the torque profile.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If engine speed monitoring is used for diagnostic purposes, then the diagnostic system is simple to implement, but the diagnostic precision and ability to distinguish different degradation types is insufficient
Solution Approach 1:
The patent introduces generator parameters (current, voltage, power, torque) as intermediary measurements to indirectly assess engine condition. Instead of directly measuring engine degradation, the system measures electrical parameters from the generator that are influenced by engine torque variations, providing more precise diagnostic information while using existing generator components.
Solution Approach 2:
The patent transitions from single-parameter engine speed monitoring to multi-dimensional analysis by incorporating generator electrical parameters (current, voltage, power) and their frequency content. This dimensional expansion enables differentiation between various degradation types that cannot be distinguished by speed alone.
2Loss of information
If generator parameters are measured and analyzed to determine torque profile and frequency content, then the diagnostic precision and ability to distinguish degradation types is improved, but the device complexity and measurement requirements increase
Solution Approach 1:
The patent makes the generator serve multiple functions: it continues to generate electrical power while simultaneously acting as a diagnostic sensor. The generator's electrical parameters are used both for their primary purpose (power generation) and for diagnostic purposes (torque profile analysis), eliminating the need for separate diagnostic hardware.
Solution Approach 2:
The generator performs self-diagnostic contribution by providing electrical parameter data that reflects engine condition. The system uses the generator's own operational parameters (current, voltage, power) to diagnose engine degradation, allowing the generator to effectively monitor the engine that drives it without requiring external diagnostic equipment.
Data Source
AI summary
Methods and systems are provided for an engine. A condition of the engine may be diagnosed based on information provided by signals from a generator operationally connected to the engine and/or other signals associated with the engine. Different types of degradation may be distinguished based on discerning characteristics within the information. Thus, a degraded engine component may be identified in a manner that reduces service induced delay.