Fuel Rail Nozzle Retention Bracket Impact Stability
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Solution Overview
Problem
Conventional fuel rail assemblies face issues with relative displacement between the fuel line and the engine/fuel rail during high-speed impact events, leading to potential fuel leaks, and existing solutions that mount the fuel line directly to the engine increase costs and service time.
Innovation Solution
A structural fuel rail retention bracket is designed with a main body and connecting ends made from rigid materials, featuring semi-circular arms for interference fits with the fuel rail and fuel line, preventing relative displacement and maintaining coupling between the components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the fuel line is mounted directly to the engine block to prevent relative displacement, then the reliability of the fuel rail assembly is improved, but the device complexity and manufacturing cost increase
Solution Approach 1:
A retention bracket is introduced as an intermediary component between the fuel rail and fuel line. The bracket includes a first connecting end that couples to the fuel rail and a second connecting end that couples to the fuel line, preventing relative displacement without requiring direct engine block mounting. This intermediary structure resolves the contradiction by maintaining reliability while reducing overall system complexity.
2Reliability
If the fuel line is mounted directly to the engine block, then the reliability is improved, but the assembly time and serviceability time increase
Solution Approach 1:
The retention bracket is designed as a segmented, modular component with distinct connecting ends for the fuel rail and fuel line. This segmentation allows the bracket to be independently installed and removed without affecting the engine block or other components, significantly reducing assembly and service time while maintaining the reliability needed to prevent fuel leaks during impact events.
3Stability of the object's composition
If a rigid retention bracket is used to prevent relative displacement, then the stability of the fuel rail assembly is improved, but the device complexity increases
Solution Approach 1:
The retention bracket employs local quality by concentrating structural reinforcement only where needed - specifically in the main body connecting the fuel rail and fuel line attachments. The connecting ends themselves remain relatively simple clip-like structures. This localized approach to rigidity provides the necessary stability to prevent relative displacement during impacts while keeping the overall device complexity low.
Data Source
AI summary
A fuel rail retention bracket for a fuel rail assembly having a fuel rail fluidly coupled to a fuel line includes a main body, a first connecting end configured to couple to the fuel rail, and a second connecting end configured to couple to the fuel line. The main body and first and second connecting ends are configured to prevent relative displacement between the fuel line and the fuel rail to maintain the coupling between the fuel rail and the fuel line.