External Fuel Tank Fairing Mounting Preserves Volume

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Solution Overview

Problem

The existing methods for securing a fairing to a fuel tank in vehicles require creating hollows in the tank, which reduces its available volume, compromising its capacity.

Innovation Solution

The fairing is secured to the tank using external fixing means that do not modify the tank's structure, allowing the tank to maintain its maximum capacity, with these means being offset from the reservoir in a horizontal plane and not overlapping it vertically, and utilizing extensions or inserts that are integral or attached to the tank for secure attachment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If fixing means are integrated into the tank wall, then the fairing can be securely attached, but the tank volume is reduced due to hollows

Engineering Contradiction:
Improveattachment strengthVSAvoidtank volume
Core Design Contradiction:
StrengthVSVolume of stationary object

Solution Approach 1:

The fixing means are relocated from the interior of the tank wall to the exterior surface of the tank. By moving the attachment points to another dimension (outside the tank), the patent eliminates the need for hollows that would reduce tank volume, while still providing secure attachment for the fairing through external mounting structures

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Volume of stationary object

If external fixing means are used, then the tank volume is preserved, but the attachment structure becomes more complex

Engineering Contradiction:
Improvetank volumeVSAvoidfixing structure complexity
Core Design Contradiction:
Volume of stationary objectVSDevice complexity

Solution Approach 1:

The fixing means are segmented into separate components: mounting plates attached to the tank exterior, and corresponding attachment elements on the fairing. This segmentation allows the tank to maintain its full volume while the attachment function is distributed across multiple simple external components rather than requiring complex internal modifications

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

External mounting plates serve as intermediary elements between the tank and the fairing. These plates are attached to the tank's exterior surface and provide attachment points for the fairing, acting as a mediator that enables secure fastening without penetrating or modifying the tank's internal structure

Inventive Principle:
Principle #24Intermediary (Mediator)

Data Source

PatentEP3960544A1Vehicle provided with a fairing under the fuel tank
Publication Date: 2022.03.02 RENAULT SA
  • EP3960544A1 patent drawingFigure 1~2
  • EP3960544A1 patent drawingFigure 3~5
  • EP3960544A1 patent drawing

AI summary

The invention relates to a vehicle (1, 100) having a fuel tank (2, 102) delimited by a wall (3, 4, 5, 103, 104, 105), and a fairing (8, 108) attached to said tank (2, 102) by fastening means (11, 12, 111, 112). According to the invention, at least one of said fastening means (111, 112) is external to the wall (103, 104, 105) delimiting the tank (102).