Fuel Supply Bubble Removal with Foreign Matter Regulation
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Solution Overview
Problem
In fuel supply devices, foreign matters can flow into the filter device through the valve device during the valve opening operation, contaminating the fuel supply.
Innovation Solution
A bubble removing device with a foreign matter regulator is integrated into the filter device and suction pipe, which discharges bubbles back into the fuel tank while preventing foreign matters from entering the fuel supply device by using a second filter to capture contaminants.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a valve device is used to discharge bubbles from the filter device, then bubble removal efficiency is improved, but foreign matters can flow into the fuel supply device through the valve device
Solution Approach 1:
A foreign matter regulator is introduced as an intermediary component between the valve device and the fuel supply path. The regulator includes a cage structure with mesh portions that act as a filter, allowing bubbles to pass through while intercepting foreign matters. This mediator resolves the contradiction by enabling bubble discharge functionality while simultaneously preventing foreign matter contamination.
Solution Approach 2:
The valve device and foreign matter regulator are positioned at specific locations within the bubble removing device. The mesh structure of the regulator is strategically placed to intercept foreign matters while allowing bubble passage. This localized quality differentiation enables the system to perform both bubble removal and foreign matter prevention functions at different spatial zones.
2Volume of moving object
If the bubble removing device is integrated into the fuel supply device, then space utilization is improved, but maintenance and replacement become more difficult
Solution Approach 1:
The bubble removing device is designed as a separable module that can be independently removed from the fuel supply device. The device includes distinct components (valve device, foreign matter regulator, housing) that can be assembled and disassembled as a unit. This segmentation allows the compact integrated design while enabling easy removal and replacement of the entire bubble removing device for maintenance purposes.
Solution Approach 2:
The bubble removing device is designed to be extractable from the fuel supply system. The housing includes engagement features that allow the device to be securely mounted during operation but also enable straightforward removal when maintenance is needed. This extraction capability resolves the contradiction between integrated compact design and maintainability.
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 configuration effectively inhibits unfiltered foreign matters from entering the fuel supply device while efficiently discharging bubbles, ensuring cleaner fuel supply and compact, easily replaceable components.
Implementation Method 1
a first filter that filters a fuel
Implementation Method 2
a second filter that captures foreign matters in the discharged fuel
Implementation Method 3
a pump that draws the fuel from the filter chamber
Data Source
AI summary
A fuel supply device includes a filter device, a pump, a suction pipe, and a bubble removing device. The filter device includes a first filter that filters a fuel, a filter chamber surrounded by the first filter, and a filter opening that is in fluid communication with the filter chamber. The pump has a pump suction port for drawing the fuel from the filter chamber. The suction pipe fluidly connects the filter opening to the pump suction port. The bubble removing device is disposed in at least one of the filter device and the suction pipe. The bubble removing device includes a valve device that is configured to discharge a bubble contained in the fuel to the internal space of the fuel tank, and a foreign matter regulator that is disposed between the valve device and the internal space and that regulates or prevents a foreign matter contained in the fuel from flowing into the fuel supply device.