Horizontal Fuel Pump Module for Low-Floor Tanks
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Solution Overview
Problem
Existing fuel pump modules are not compatible with low-floor type fuel tanks due to their vertical structure, which limits their installation in vehicles with reduced underbody height, and they also generate vibrations and noise that can be transmitted to passengers.
Innovation Solution
A fuel pump module with a horizontal structure, featuring a reservoir cup and a jet pump, where the fuel pump is laid down and the retainer body is connected through vibration absorbers to minimize noise and vibration transmission, allowing easy installation in low-floor type fuel tanks and reducing the module's vertical height.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the fuel pump is disposed in a vertically erected structure, then the fuel pump can be easily mounted, but the module height cannot be reduced for low-floor type fuel tanks
Solution Approach 1:
The fuel pump module inverts the conventional vertical arrangement by disposing the fuel pump in a horizontal orientation within the reservoir cup. This inversion allows the module to achieve reduced height for low-floor type fuel tanks while maintaining mounting capability through the horizontal configuration of the pump assembly.
Solution Approach 2:
The invention transitions from a vertical dimensional arrangement to a horizontal dimensional arrangement. By changing the orientation of the fuel pump from vertical to horizontal, the module height is reduced while the length in the horizontal direction accommodates the pump, effectively redistributing the spatial requirements across different dimensions.
2Productivity
If the fuel pump operates, then fuel can be delivered, but vibrations and noise are generated that transmit to passengers
Solution Approach 1:
The retainer body serves as an intermediary element between the fuel pump and the reservoir cup. It horizontally disposes the fuel pump within the reservoir cup, creating a buffer structure that reduces the direct transmission of vibrations and noise to the fuel tank and subsequently to passengers, while maintaining the fuel delivery function.
Solution Approach 2:
The invention extracts the fuel pump from its conventional vertical mounting position and relocates it to a horizontal disposition within the reservoir cup. This extraction from the traditional mounting structure isolates the pump's vibration and noise sources from direct transmission paths to the vehicle body and passengers.
3Adaptability or versatility
If different vehicle models require different fuel tank structures, then vehicle-specific performance can be optimized, but investment cost increases
Solution Approach 1:
The fuel pump module is designed with universal adaptability through its horizontal configuration and standardized retainer body structure that can be mounted in the reservoir cup of various fuel tank types. This universal design allows the same module to serve multiple vehicle models and fuel tank configurations, reducing the need for model-specific variations and thereby lowering investment and manufacturing costs.
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
Enables the installation of the fuel pump module in low-floor type fuel tanks, reduces noise and vibration transmission to passengers, and allows for common use across various vehicle types by adjusting the connecting bar lengths.
Implementation Method 1
a first vibration absorber to integrally connect the retainer body to the first fixing part and absorb a vibration of the fuel pump through elastic deformation, and a second vibration absorber to integrally connect the retainer body to the second fixing part and absorb the vibration of the fuel pump through elastic deformation
Implementation Method 2
a jet pump installed in the reservoir cup and to suction fuel outside the reservoir cup and discharge the fuel into the reservoir cup by receiving a portion of the fuel delivered from the fuel pump as a working fluid
Data Source
AI summary
A fuel pump module for a vehicle, which is formed in a low-floor type fuel pump module capable of being easily installed in a fuel tank with a reduced vertical height. The fuel pump module includes a head plate to be mounted in an opening of a fuel tank, a reservoir cup to which the head plate is pivotably coupled through a pair of connecting bars and which is to be installed in the fuel tank in a state of being coupled to the head plate, a fuel pump disposed in the reservoir cup in a state of being laid and to deliver fuel in the reservoir cup to an outside of the fuel tank, and a jet pump installed in the reservoir cup and to suction fuel outside the reservoir cup and discharge the fuel into the reservoir cup.