Plastic Fuel Pump Lock Ring Repair With Self-Tapping Fasteners
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Solution Overview
Problem
Automotive fuel supply systems face challenges in replacing corroded metal components like fuel pump lock rings and fuel lines due to corrosion, which often necessitate replacing the entire gas tank or fuel line, leading to time-consuming and complex replacements.
Innovation Solution
A repair kit featuring a retaining ring with self-tapping fasteners and quick connect fittings for fuel pumps and lines, allowing for secure attachment without damaging the gas tank, along with a method for installing the new fuel pump and filter system using these components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional metal lock rings and threaded fittings are used, then secure attachment is achieved, but corrosion occurs and replacement becomes complex and time-consuming
Solution Approach 1:
The patent changes the material parameter from metal to plastic for the lock ring and fittings, which eliminates corrosion while maintaining attachment security through redesigned engagement mechanisms including tabs, slots, and interlocking features
Solution Approach 2:
The fuel line assembly is segmented into modular components with standardized quick-connect fittings, allowing individual replacement of filters and lines without removing entire assemblies, significantly reducing replacement time
2Reliability
If traditional threaded fittings are used for fuel lines, then secure connection is achieved, but replacement requires removing entire fuel lines and is time-consuming
Solution Approach 1:
The quick-connect fittings enable dynamic connection and disconnection of fuel line components without permanent attachment, allowing rapid replacement of filters and lines while maintaining secure connections during operation
Solution Approach 2:
The fittings are pre-designed with alignment features and engagement mechanisms that prepare the connection in advance, allowing simple push-to-connect installation without threading or complex assembly steps
Data Source
AI summary
A method of installation and kits for replacing a lock ring securing a fuel pump to a gas tank and a kit for replacing a fuel supply system of an automotive vehicle. The kit for replacing the lock ring including a circular body having a plurality through bores and a plurality of self-tapping fasteners. The kit for replacement of a fuel supply line including a fuel filter having circular beads on the inlet and outlet. The kit further including a pair of quick disconnect fittings for engaging the beads of the fuel filter.