Modular Fuel Pump Hanger Assembly for Small Tank Openings
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Solution Overview
Problem
Existing fuel pump systems struggle to accommodate two fuel pumps within the small opening of a fuel tank, especially when the combined diameter of the pumps exceeds the opening size.
Innovation Solution
A modular fuel pump hanger assembly with a self-locating design that allows two fuel pumps to be inserted and assembled within the fuel tank, using a combination of brackets, dowel pins, and bolts to secure the pumps in place.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If two fuel pumps are installed to increase fuel supply, then fuel delivery capacity is improved, but the combined diameter of the pumps exceeds the fuel tank opening size making installation impossible
Solution Approach 1:
The hanger assembly is divided into separate modular components including a first hanger portion and a second hanger portion that can be assembled independently and then connected together within the fuel tank through the opening, allowing installation of two pumps without requiring simultaneous insertion of the complete assembly
Solution Approach 2:
The hanger portions are designed to nest within each other or connect through the fuel tank opening in a telescoping manner, where one hanger portion can be inserted first and the second portion is then connected through the same opening, effectively allowing the assembly to pass through the opening in a compressed state
2Ease of operation
If a modular design is used to facilitate assembly through the small opening, then ease of installation is improved, but device complexity increases
Solution Approach 1:
The hanger portions incorporate self-aligning and self-locating features including locating protrusions and recesses, guide surfaces, and automatic positioning mechanisms that enable the components to automatically find their correct relative positions during assembly through the opening, reducing the need for complex alignment procedures or specialized tools
Data Source
AI summary
A fuel pump hanger assembly configured to fit two fuel pumps into the small opening of a fuel tank, even if the diameter of both fuel pumps combined is larger than the opening of the fuel tank. The fuel pumps may be inserted into the fuel tank one at a time, then assembled together through the small opening of the fuel tank. The parts self-locate inside the fuel tank and the assembly held together with bolts. This self-locating feature facilitates the assembly of all parts inside the small opening of the fuel tank. The hanger holds two common fuel pumps and comes with fittings for interfacing to the car's fuel and vapor lines.