Fuel Cap Assembly With Elastomer Coupler for Mixed Tank Flange Sizes
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Solution Overview
Problem
Existing mobile fuel distribution systems face challenges in securely and interchangeably mounting fuel cap assemblies to fuel tanks with varying inlet flange sizes, which affects the efficiency and flexibility of fuel refueling operations.
Innovation Solution
The use of a cylindrical coupler made of elastomer, which defines a second internal passage with varying inner diameters between an inlet port and an outlet port, allows for interchangeable connection of fuel cap assemblies to different fuel tank flange sizes, facilitated by adjustable hose clamps and annular grooves.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple fuel cap sizes are used to accommodate different fuel tank flange sizes, then compatibility with various fuel tanks is improved, but device complexity and inventory requirements increase
Solution Approach 1:
The fuel cap assembly is designed with a universal coupling mechanism that can accommodate multiple fuel tank flange sizes through a single standardized interface. The coupling member includes adjustable components that adapt to different flange diameters, allowing one fuel cap design to serve multiple fuel tank types rather than requiring separate caps for each size.
Solution Approach 2:
The coupling member incorporates adjustable parameters such as variable clamp positions and resizable sealing surfaces that can be modified to match different fuel tank flange dimensions. This adjustability allows the same fuel cap assembly to maintain proper sealing and connection across a range of flange sizes without changing the fundamental cap design.
2Adaptability or versatility
If adjustable hose clamps are used to secure the cylindrical coupler, then adaptability to different flange sizes is improved, but device complexity increases
Solution Approach 1:
The hose clamps are designed with adjustable positioning capabilities that allow them to be moved along the coupling member to accommodate different flange sizes. This dynamic adjustment feature enables a single clamp design to work with multiple configurations rather than requiring fixed-position clamps for each specific size.
Solution Approach 2:
The coupling member is divided into distinct functional zones including clamp positioning areas, sealing surfaces, and connection points. This segmentation allows each component to perform its specific function independently while working together as a unified system, reducing the need for additional complex components.
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 solution enables secure and flexible mounting of fuel cap assemblies to fuel tanks with different inlet flange sizes, ensuring reliable fuel refueling operations and reducing the need for multiple fuel cap sizes.
Implementation Method 1
A cylindrical coupler composed of an elastomer defines a second internal passage that extends between an inlet port and an outlet port
Data Source
AI summary
A fuel cap assembly according to an example of the present disclosure includes a fuel cap and a pipe stub that extends from the fuel cap and defines a first internal passage. A sensor element and a fuel tube are adjacent to each other and both extend from the fuel cap through the first internal passage. A cylindrical coupler is composed of an elastomer and defines a second internal passage that extends between an inlet port and an outlet port. The inlet port has a first inner diameter and the pipe stub is receivable into the inlet port. The outlet port has a second inner diameter that differs from the first inner diameter.