Reactive Device for Diesel Exhaust Fluid Contamination Detection
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Solution Overview
Problem
Existing methods for detecting contamination in Diesel Exhaust Fluid (DEF) storage systems are inefficient, particularly due to the need for remote testing and the difficulty in accessing long fill pipes, leading to costly and complex remediation processes.
Innovation Solution
A contamination indicator system is integrated near the DEF storage tank opening, using a reactive device that changes appearance upon exposure to hydrocarbons, allowing for immediate and on-site detection of contamination without reacting to DEF, facilitating easy identification and prevention of further damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If test strips or wearable detectors are used to detect hydrocarbon contamination in DEF, then contamination detection capability is provided, but the detection location is remote from the storage tank and requires system disassembly for effective testing
Solution Approach 1:
The reactive device is pre-installed at the fill pipe opening before any contamination can occur. This preliminary placement ensures that the detection mechanism is already in position to immediately detect contamination upon contact with hydrocarbons, eliminating the need for later system disassembly or sampling operations
Solution Approach 2:
A reactive device containing hydrocarbon-sensitive material serves as an intermediary element positioned between the external environment and the DEF storage system. This mediator provides direct visual indication of contamination at the fill pipe opening, making detection simple and accessible without requiring remote testing or system disassembly
2Reliability
If the reactive device is placed inside the storage tank, then direct contact with DEF is achieved, but the device becomes difficult to access and replace
Solution Approach 1:
The reactive device is pre-positioned at the fill pipe opening where it can immediately detect contamination as it enters the system. This preliminary placement maintains reliable detection capability while keeping the device easily accessible for replacement without requiring tank disassembly
Solution Approach 2:
The reactive device is extracted from the interior of the storage tank and repositioned at the fill pipe opening. This extraction maintains the detection function while dramatically improving accessibility, allowing the device to be monitored and replaced without interfering with normal tank operations or requiring complex disassembly procedures
3Reliability
If contamination is detected late in the system, then extensive damage may have already occurred, but early detection requires complex testing procedures
Solution Approach 1:
The reactive device is positioned at the fill pipe opening to provide preliminary detection of contamination at the moment of entry. This early detection capability prevents contamination from spreading through the system, avoiding extensive damage while maintaining a simple visual indication mechanism that requires no complex testing procedures
Solution Approach 2:
The reactive device utilizes hydrocarbon-sensitive material that undergoes visible color change upon contact with contaminants. This simple visual indicator provides immediate contamination detection at the fill pipe opening, enabling early system protection without requiring complex testing equipment or procedures
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 rapid and proximal detection of contamination, reducing the need for extensive system disassembly and repair, thereby minimizing costs and ensuring the DEF system's effectiveness and warranty compliance.
Implementation Method 1
A reactive device may be located near the opening and reactive upon exposure to one or more predetermined components potentially present in a fluid pourable into the container through the opening
Data Source
AI summary
A system, method and apparatus for making evident, diesel exhaust fuel (DEF) contamination is provided. The system, for use with a diesel exhaust fluid system, includes a container having an opening to receive a diesel exhaust fluid. A reactive device is located near the opening and reactive upon exposure to one or more predetermined components potentially present in a fluid pourable into the container through the opening. The reactive device is not reactive to the diesel exhaust fluid.