Fuel Property Determination via Flame Imaging Comparison
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional methods for determining fuel physical properties, such as octane number, are complex and time-consuming due to the need for preliminary experiments to account for combustion chamber conditions and require measuring temperature gradients, increasing work burden and operational complexity.
Innovation Solution
A fuel physical property determination method and device that compares imaging data of flames formed using a test fuel to those formed with a standard-mixed fuel, allowing for the determination of physical properties without measuring the temperature gradient of the test tube, thereby simplifying the process and reducing work burden.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional methods are used to determine fuel physical properties, then measurement accuracy is maintained, but the determination process becomes complex and time-consuming due to preliminary experiments and temperature gradient measurements
Solution Approach 1:
The invention extracts and removes the temperature gradient measurement step from the conventional octane number determination process. By using imaging data comparison between test fuel and standard-mixed fuel flames, the method eliminates the need for separate temperature gradient measurements and preliminary experiments, thereby simplifying the overall process while maintaining measurement accuracy through direct visual comparison of combustion characteristics
Solution Approach 2:
The invention creates a visual copy of the flame combustion process through imaging. By capturing and comparing images of flames formed by test fuel and standard-mixed fuel under identical conditions, the method replaces complex physical measurements with optical copying and analysis, simplifying the determination process while preserving the essential combustion characteristics needed for accurate octane number assessment
2Reliability
If preliminary experiments are performed to account for combustion chamber conditions, then measurement reliability is improved, but the determination time increases
Solution Approach 1:
The invention merges the flame imaging process with the octane number determination process. By simultaneously capturing flame images of test fuel and standard-mixed fuel and comparing them directly, the method combines what were previously separate steps (condition assessment and measurement) into a single integrated process, maintaining reliability through comparison while eliminating the time loss associated with sequential preliminary experiments
Solution Approach 2:
The invention performs preliminary action by pre-establishing the imaging and comparison framework before actual fuel testing. The system is prepared with the capability to capture and compare flame images, so when determination is needed, the process can proceed directly without requiring preliminary experiments to set up measurement conditions, thus reducing determination time while maintaining reliability
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
This approach enables the rapid and accurate determination of fuel physical properties by eliminating the need for temperature gradient measurement, thus shortening the time required for analysis and reducing operational complexity.
Implementation Method 1
a test fuel N1 and air A are supplied to form a pre-mixed gas, the pre-mixed gas is supplied to a test tube (2), a temperature gradient is applied to the test tube (2), flames are formed by burning the pre-mixed gas
Implementation Method 2
imaging data obtained by imaging the flames formed using the test fuel N1
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The fuel physical property determination method relating to the first aspect of the present invention includes: a test fuel flame-imaging step of obtaining imaging data by imaging flames formed by supplying a pre-mixed gas containing a test fuel and an oxidant agent, to a test tube in which an internal flow path thereof has a diameter set smaller than a flame-quenching distance at normal temperature; and a physical property determination step of determining a physical property of the test fuel by comparing the imaging data obtained in the test fuel flame-imaging step and imaging data obtained by imaging flames ignited by supplying a pre-mixed gas containing a standard-mixed fuel and an oxidant agent, to the test tube, the standard-mixed fuel having a known physical property.