Low-Profile LPG Fuel Pump Module with Rotating Reservoir Cup
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Solution Overview
Problem
Existing LPG fuel pump modules are difficult to assemble and mount in vehicles with low underbody designs, such as SUVs and RVs, due to their cylindrical or donut shape, which limits space and increases costs, and reduces the commercial value by decreasing load space and fuel efficiency.
Innovation Solution
A low-profile fuel pump module with a horizontal configuration, including a reservoir cup and jet pump, supported by rotatable support bars and springs, allowing easy assembly and mounting in a flat bombe with noise and vibration reduction features.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If existing LPG bombes with cylindrical or donut shape are used, then fuel storage capacity is maintained, but mounting difficulty increases and vehicle underbody clearance is reduced
Solution Approach 1:
The bombe is divided into a flat main body portion and a separate fuel pump module. The fuel pump module is detachably coupled to the flat bombe, allowing independent assembly and mounting. This segmentation enables the bombe to be mounted in vehicles with low underbody clearance while maintaining fuel storage capacity.
Solution Approach 2:
The invention transitions from traditional cylindrical/three-dimensional bombe shapes to a flat, planar configuration. The flat bombe is mounted horizontally in the vehicle underbody, utilizing horizontal space rather than vertical clearance, thereby solving the mounting difficulty in low-clearance vehicles.
2Ease of operation
If existing LPG bombes are modified to accommodate low underbody designs, then mounting feasibility improves, but manufacturing cost increases
Solution Approach 1:
The fuel pump module is designed as a separate, detachable component from the flat bombe. This allows standardization of the bombe body while accommodating different vehicle requirements through modular pump module attachment, reducing customization costs and simplifying manufacturing.
3Stability of the object's composition
If fuel pump module is rigidly fixed to plate, then structural stability improves, but assembly difficulty and mounting complexity increase
Solution Approach 1:
The support bars are designed with rotational joints connecting the reservoir cup to the plate, replacing rigid fixed connections. This dynamic connection allows the reservoir cup to rotate relative to the plate, simplifying assembly and mounting while maintaining structural stability during operation.
4Stability of the object's composition
If reservoir cup is firmly fixed to plate, then positional stability improves, but assembly ease and mounting flexibility decrease
Solution Approach 1:
The rotational support bars enable the reservoir cup to be easily rotated into position during assembly, then stabilized in the operational position. This dynamic mechanism provides both assembly ease and positional stability, resolving the contradiction between firm fixation and easy assembly.
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 stable and efficient fuel supply with reduced noise and vibration, accommodating the low-profile design of modern vehicles while maintaining fuel efficiency and commercial value.
Implementation Method 1
a jet pump supplied with the fuel from the fuel pump as working fluid to suction the fuel outside the reservoir cup and discharge the fuel into the reservoir cup
Implementation Method 2
since a reservoir cup may be rotated and restored with respect to a plate by support bars and springs
Data Source
AI summary
A fuel pump module which may be easily assembled and mounted in a flat bombe having a small height in an LPG vehicle, may have a structure in which a reservoir cup may be rotated and restored with respect to a plate by support bars and springs, so that the fuel pump module may be easily assembled and mounted even in a flat bombe having a small height. Furthermore, members for blocking noise and absorbing vibration are combined with a fuel pump, so noise and vibration may be reduced when the pump is operated.