Aircraft Engine Control Unit Diagnosis with Single Cable
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Solution Overview
Problem
Current aircraft engine control unit diagnosis methods are cumbersome, requiring disassembly and complex testing procedures, which lead to increased maintenance time, cost, and the risk of diagnosis errors.
Innovation Solution
A portable, autonomous diagnosis device with a single connection cable that allows for automatic continuity and electrical insulation tests of connectors, and internal electrical integrity verification of the control unit without simulating flight conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a test bench is used to carry out diagnosis, then comprehensive testing functions are available, but the device becomes heavy and not easily transportable
Solution Approach 1:
The patent segments the diagnosis system into a portable diagnosis device that can be easily transported and a fixed test bench that remains in the workshop. The portable device handles specific diagnostic tasks while more comprehensive testing can be performed on the test bench, allowing the system to be divided into mobile and stationary components based on functional requirements.
2Adaptability or versatility
If a diagnosis device with multiple connecting ports is used, then comprehensive testing capability is achieved, but the device becomes oversized and connecting means become intertwined
Solution Approach 1:
The patent implements a universal connector that can interface with multiple different types of connectors (such as circular connectors, rectangular connectors, and other aircraft-specific connectors) through a single standardized interface. This multi-functional connector eliminates the need for multiple specialized connecting ports and cables, reducing device complexity while maintaining comprehensive testing capability.
3Measurement precision
If manual measurements and multiple tests are performed to identify fault sources, then accurate diagnosis is achieved, but maintenance time and cost increase significantly
Solution Approach 1:
The patent performs preliminary automated diagnostic tests that quickly identify potential fault locations and characteristics before more detailed manual measurements are conducted. The system pre-screens components using automated continuity, resistance, and functional tests, so that when manual intervention is needed, the scope is already narrowed down, reducing the overall time and effort required for accurate fault identification.
Solution Approach 2:
The diagnosis device provides immediate feedback through automated measurement and analysis systems that continuously monitor test results and guide the diagnostic process. The system automatically compares measured values against reference data, identifies anomalies, and directs attention to specific fault locations, eliminating the need for technicians to perform numerous manual tests to achieve the same level of diagnostic accuracy.
Data Source
AI summary
A device and a method for diagnosing an engine control unit of an aircraft, the device including an autonomous and mobile electronic diagnostic unit and connecting means for connecting the unit to an engine control unit of an aircraft, the connecting means advantageously including a single connection cable.