Suction Filter Dividing Wall for Fuel Intake Stability
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Solution Overview
Problem
Conventional suction filters in fuel supply devices experience a decrease in fuel intake efficiency due to fuel leakage when the vehicle tilts, leading to air being drawn into the intake port, which disrupts the discharge performance of the fuel pump.
Innovation Solution
A suction filter design that includes a filter element and a dividing wall element within the fuel tank, dividing the inner space into two areas: one for filtered fuel and another for the intake port, with a passage element allowing filtered fuel to flow from the first space to the second space, maintaining a liquid film and preventing air from entering the intake port.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If an inflow hole is formed on the storage member to allow fuel to flow in between the filter element and the storage member, then fuel can be supplied to the filter element during vehicle turning, but the liquid film formation is disrupted and air is drawn into the intake port
Solution Approach 1:
The inner space is divided into a first space (for liquid film formation) and a second space (for fuel storage), separated by a dividing wall element. This segmentation allows the liquid film to form stably in the first space while the second space stores fuel, preventing air intake during vehicle turning without disrupting liquid film formation.
Solution Approach 2:
A passage element is introduced as an intermediary component to supply fuel from the second space to the first space. This passage element has an inflow port and outflow port that control fuel flow, ensuring the liquid film is maintained while allowing fuel supplementation during vehicle turning operations.
2Reliability
If the liquid film is maintained to prevent air intake, then fuel pump discharge performance is stabilized, but fuel leakage occurs through the inflow hole during vehicle turning
Solution Approach 1:
By segmenting the inner space into first and second spaces with a dividing wall, the liquid film is confined to the first space where it can maintain stability for preventing air intake. The second space serves as a fuel reservoir, and the passage element controls fuel transfer between spaces, preventing leakage through the inflow hole while maintaining liquid film integrity.
3Reliability
If the inner space is divided into first space for liquid film and second space for fuel storage, then air intake is prevented, but the device structure becomes more complex
Solution Approach 1:
The dividing wall element segments the inner space into functional zones (first space for liquid film, second space for fuel storage), preventing air intake while maintaining a relatively simple overall structure. The segmentation is achieved through a straightforward partition rather than complex mechanisms.
Solution Approach 2:
The passage element serves multiple functions: it supplies fuel from the second space to the first space, maintains liquid film formation, and prevents air intake. This multi-functionality reduces the need for additional separate components, offsetting the structural complexity introduced by the space division.
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 design stabilizes the discharge performance of the fuel pump by ensuring filtered fuel is effectively drawn into the intake port, even when the vehicle tilts, preventing air from entering and maintaining fuel flow efficiency.
Implementation Method 1
a filter element (310) disposed in the fuel tank (2) and filtering stored fuel, which is the fuel stored in the fuel tank (2), by allowing the stored fuel passing the filter element (310) into an inner space (312)
Implementation Method 2
The liquid film remains while the outer surface of the filter element is in contact with the stored fuel
Data Source
AI summary
A suction filter includes a filter element disposed in a fuel tank and filtering a stored fuel that is a fuel stored in the fuel tank by allowing the stored fuel passing the filter element into an inner space, a dividing wall element disposed to divide the inner space into a first space, into which a filtered fuel that is the fuel filtered by the filter element flows, and a second space, to which an intake port drawing in the filtered fuel is opened, and enclosing the first space together with the filter element and enclosing the second space together with the filter element, and a passage element including an inflow port opened to the second space and an outflow port to which an intake pressure is applied by the intake port and defining a flow passage through which filtered fuel flows from the inflow port toward the outflow port.