Fuel Pump Module Anti-Rotation Coupling
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Solution Overview
Problem
Conventional fuel pump modules face issues where the fuel delivery pipe may rotate and interfere with the guide rod, leading to damage, breakage, and potential fires, particularly when applied to fuel tanks of various shapes and sizes, resulting in reduced common use rates and increased R&D and manufacturing costs.
Innovation Solution
The fuel pump module incorporates a fuel delivery pipe with anti-rotation features, including protrusions and grooves, to prevent axial rotation and interference with the guide rod, ensuring secure coupling and preventing damage or fires, while allowing for versatility across different tank sizes and shapes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the fuel delivery pipe is coupled to the reservoir module without anti-rotation features, then the coupling process is simple, but the fuel delivery pipe may rotate and interfere with the guide rod causing damage or fire
Solution Approach 1:
The coupling structure employs asymmetric features including a protrusion on the fuel delivery pipe and a corresponding groove on the reservoir module, combined with an anti-rotation rib and groove arrangement. This asymmetric design prevents rotational movement of the fuel delivery pipe during coupling, eliminating interference with the guide rod while maintaining a relatively simple overall structure.
2Reliability
If the fuel delivery pipe is constrained to prevent rotation, then interference with the guide rod is prevented, but the coupling process becomes more complex
Solution Approach 1:
The anti-rotation rib and groove are pre-formed on the fuel delivery pipe and reservoir module respectively during manufacturing. When coupling occurs, these pre-existing features automatically engage to prevent rotation, eliminating the need for additional constraining mechanisms or complex coupling procedures during assembly.
3Adaptability or versatility
If separate fuel pump modules are designed for different fuel tank shapes and sizes, then each configuration is optimized, but the common use rate decreases and R&D and manufacturing costs increase
Solution Approach 1:
The fuel pump module incorporates a universal coupling structure with the anti-rotation rib and groove features that can accommodate various fuel tank shapes and sizes. The protrusion-groove coupling mechanism provides consistent anti-rotation functionality across different applications, allowing a single module design to serve multiple purposes and increasing the common use rate while reducing R&D and manufacturing costs.
Data Source
AI summary
The present disclosure relates to a fuel pump module, and more particularly, to a fuel pump module including a flange module and a reservoir module, in which when a fuel delivery pipe for supplying filtered fuel from the reservoir module to the flange module is coupled to the reservoir module, since the fuel deliver pipe may be coupled to the reservoir module to a desired position in an axial direction and to be prevented from rotating in an axial direction, the fuel delivery pipe may be prevented from interfering with a guide rod connecting the flange module and the reservoir module in a vertical direction, thereby not only preventing the occurrence of fire, but also increasing a common use rate of the reservoir module.