Fuel Tank Valve Detectivity Stabilization
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Solution Overview
Problem
Traditional fuel tank valves experience issues with detectivity stabilization and preset full setting point accuracy due to surface tension effects, causing the float valve to close prematurely and not corresponding to the actual liquid level of stored fuel.
Innovation Solution
A fuel tank valve design with a projecting part separated by a predetermined distance from the opening part, increasing the contact area with fuel and setting the detection surface higher, allowing for stable detectivity and accurate liquid level correspondence to a preset full setting point.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the projecting part is provided to increase contact area with fuel, then detectivity is stabilized, but the liquid level of stored fuel does not correspond to the preset full setting point due to surface tension effects
Solution Approach 1:
The detection surface is divided into two separate parts: the opening part and the projecting part. By separating these parts by a predetermined distance, the patent segments the fuel contact area, allowing the liquid level detection to be adjusted independently while maintaining stable detectivity through the combined contact area of both segments.
2Reliability
If the projecting part is provided to increase contact area with fuel, then detectivity is stabilized, but the opening part closes prematurely before the average liquid level reaches the detection surface
Solution Approach 1:
The projecting part is positioned above the opening part at a predetermined distance, creating a preliminary detection zone. This preliminary action allows the liquid to contact the projecting part first, stabilizing detectivity before the liquid level reaches the opening part, thereby preventing premature closure and ensuring accurate timing.
3Measurement precision
If the projecting part is provided to increase contact area with fuel, then detectivity is stabilized, but surface tension causes the liquid surface to upsurge and close the opening part before the average liquid level reaches the detection surface
Solution Approach 1:
The projecting part acts as an intermediary element between the fuel liquid and the opening part. By separating the projecting part from the opening part by a predetermined distance, the patent introduces this intermediary zone that reduces the direct surface tension effect on the opening part, allowing stable detection without harmful upsurge effects.
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
The design stabilizes detectivity and ensures the liquid level of stored fuel corresponds to the preset full setting point, preventing premature closure and improving the accuracy of fuel level detection.
Implementation Method 1
since the fuel tends to attach on the detection surface by surface tension, the opening part is closed without delay
Data Source
AI summary
A fuel tank valve having: a housing that is arranged in a fuel tank and has a communication port communicating with an outside of the fuel tank; and a float valve body that is installed in the housing and closes the communication port when fuel in the housing increases, where a wall part of the housing has an opening part through which the fuel flows in and out, and a projecting part that is formed to correspond to the opening part and projects outwardly from the wall part, and the projecting part is separated above from the opening part by a predetermined distance, is provided.