Fuel Pump Module Column Filter and Resin Guide Rod
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Solution Overview
Problem
Current fuel pump modules face limitations in filtering efficiency, lifespan, and cost due to the use of multiple filters, material constraints, and the need for custom guide rods, leading to increased economic burdens and complexity in maintenance and replacement.
Innovation Solution
A fuel pump module design featuring a single column-shaped filter with a hollow space, integrated into the reservoir body assembly, and a guide rod made of synthetic resin that can be cut to specific lengths, using strength reinforcing materials and a deformation prevention structure to enhance filtering efficiency and ease of replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If both primary filter and secondary filter are used, then filtering efficiency is improved, but device complexity increases
Solution Approach 1:
The patent combines the primary filter and secondary filter into a single integrated filter assembly. The filter element includes a coarse filtration layer and a fine filtration layer integrated in one component, eliminating the need for separate primary and secondary filters while maintaining both filtration functions.
Solution Approach 2:
The single filter assembly performs multiple filtration functions simultaneously - it acts as both the primary filter (coarse filtration) and secondary filter (fine filtration). The filter element is designed to handle both large particles and fine particles in one unified structure.
2Strength
If guide rod is made of metal, then strength is improved, but material cost and labor cost increase
Solution Approach 1:
The patent changes the material parameter of the guide rod from metal to synthetic resin. This material substitution reduces manufacturing costs and labor costs while the guide rod design incorporates structural features (such as hollow sections and reinforcement ribs) to maintain sufficient strength for the application.
Solution Approach 2:
The guide rod uses synthetic resin material that may incorporate composite structures or reinforcement elements to achieve the necessary mechanical properties. The hollow design with reinforcement ribs creates a composite-like structure that provides strength while reducing material usage and cost.
3Adaptability or versatility
If guide rod length is customized for each specification, then adaptability is improved, but inventory cost increases
Solution Approach 1:
The guide rod is designed with a hollow structure that can be segmented or divided. This allows the guide rod to be configured in different lengths or sections to fit various fuel pump module specifications without requiring complete custom manufacturing for each application.
Solution Approach 2:
The guide rod design incorporates flexibility in its configuration, allowing it to be adjusted or reconfigured to different lengths as needed. This dynamic adaptability enables a single standard design to serve multiple specifications, reducing the need for extensive inventory of different lengths.
4Reliability
If secondary filter is embedded in case, then filtering efficiency is improved, but ease of repair deteriorates
Solution Approach 1:
The filter assembly is segmented into removable components. The filter element can be separated from the housing case, allowing easy removal and replacement of the filter without damaging the embedded structure. This modular design maintains filtration efficiency while enabling convenient repair and replacement.
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 achieves improved filtering efficiency, reduces the load on the fuel pump, extends the module's lifespan, and simplifies filter replacement while minimizing inventory costs and maintenance burdens.
Implementation Method 1
a filter (a primary filter 5a and a secondary filter 5b) filtering foreign materials included in the fuel tank
Implementation Method 2
the spring is positioned at the outer side of the guide rod, and is positioned between the flange assembly and the reservoir body assembly to allow the reservoir body assembly to be always positioned on the bottom of the fuel tank
Data Source
AI summary
Provided is a fuel pump module for a vehicle includes: a flange assembly positioned at a top portion of a fuel tank; a reservoir body assembly positioned at an inner bottom portion of the fuel tank; and a guide rod connecting the flange assembly and the reservoir body assembly to each other, wherein the reservoir body assembly includes: a fuel pump forcibly supplying fuel in the fuel tank to an engine; and a filter having a column shape in which it includes a hollow having the fuel pump positioned therein, installed in a form in which it is inserted into a case forming an appearance of the reservoir body assembly and having the fuel pump installed therein, and installed to allow the fuel before passing through the fuel pump to pass therethrough, thereby filtering foreign materials included in the fuel.