Locomotive Engine Harness Segment Testing for Injector Circuit Faults
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Solution Overview
Problem
Current methods for testing the integrity of locomotive engine harnesses are inadequate, leading to unnecessary replacements or reinstallations of non-defective harnesses, which can result in costly failures and complications due to the lack of ability to identify defective segments within the harness.
Innovation Solution
A portable engine harness tester that includes a power source, voltage regulator, and a display with status indicators to assess the condition of each individual segment of the engine harness, providing a simple and efficient method to determine the integrity of the wiring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the engine harness is replaced regardless of integrity, then reliability is improved, but loss of substance increases due to unnecessary replacement
Solution Approach 1:
The engine harness is divided into multiple individual segments, each tested independently. The testing device applies voltage to each segment separately and provides individual status indicators, allowing identification of only the defective segment rather than replacing the entire harness.
2Loss of time
If the engine harness is reinstalled without testing, then loss of time is reduced, but reliability deteriorates due to potential defective harness
Solution Approach 1:
The engine harness is tested before reinstallation during the overhaul process. The testing device quickly identifies defective segments, allowing the harness to be verified as functional before the engine is fully reassembled, preventing future failures.
3Measurement precision
If manual inspection of each harness segment is performed, then measurement precision is improved, but loss of time increases significantly
Solution Approach 1:
The manual mechanical inspection process is replaced with an electrical testing system. The device automatically applies voltage to each segment and provides electronic status indicators, eliminating the need for manual unwrapping and visual inspection while quickly identifying defective segments.
4Reliability
If the entire engine harness is replaced, then reliability is improved, but loss of money increases due to unnecessary replacement
Solution Approach 1:
The engine harness is divided into multiple individual segments, each tested independently. The testing device applies voltage to each segment separately and provides individual status indicators, allowing identification of only the defective segment rather than replacing the entire harness.
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
Enables quick identification of defective segments in the engine harness, reducing unnecessary replacements and potential failures by ensuring only faulty components are replaced, thus minimizing downtime and costs.
Implementation Method 1
a voltage regulator configured to convert an input voltage to an operating voltage, which may be applied to individual circuits that include the individual segments of the engine harness
Implementation Method 2
a display including a plurality of status indicators for displaying a condition of each individual segment of the harness based on the application of the operating voltage to the individual circuits corresponding to the individual segments
Data Source
AI summary
Methods, systems, and devices for determining the integrity of an engine harness are provided. In embodiments, an engine harness tester may include a power source providing an input voltage, a voltage regulator configured to convert an input voltage to an operating voltage, which may be applied to individual circuits that include segments of the engine harness routed through corresponding injectors, and a display for displaying the condition of each segment of the engine harness. In embodiments, the condition of a respective segment may include the condition of the electrical continuity of the individual circuit including the respective individual segment. The display of the engine harness tester may include a plurality of status indicators, each status indicator configured to display the condition of a respective individual segment of the engine harness.