Non-Coaxial Fuel Pump Connection Fitting for Leak-Safe Alignment
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Solution Overview
Problem
Conventional high-pressure fuel pumps face challenges in flexible spatial arrangement and alignment with high-pressure regions, leading to potential leaks and strain on connection fittings due to coaxial alignment requirements.
Innovation Solution
A connection fitting with non-coaxial first and second opening axes allows for flexible spatial arrangement, featuring connecting devices like screw threads and a widening cross-section to prevent transverse forces and ensure fluid-tight connections, either in a single piece or separate elements for complex alignments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If coaxial alignment is used for connection openings, then manufacturing and assembly are simplified, but spatial flexibility and adaptability are reduced
Solution Approach 1:
The connection fitting employs non-coaxial opening axes where the first opening axis and second opening axis are deliberately positioned at different locations and orientations. This asymmetric configuration enables the fitting to bridge misaligned connections between the high-pressure fuel pump outlet and the high-pressure region, providing spatial flexibility without requiring complex adjustment mechanisms
Solution Approach 2:
The connection fitting resolves spatial misalignment by utilizing multiple dimensions for the opening axes. The first and second opening axes can be arranged in different spatial orientations (offset, crosswise, above one another, or skewed), allowing the fitting to accommodate three-dimensional positioning variations between connected components
2Adaptability or versatility
If non-coaxial opening axes are used, then spatial flexibility is improved, but transverse forces and strain on connections increase
Solution Approach 1:
The connection fitting incorporates preventive design features that counteract transverse forces before they can cause damage. The internal geometry and wall thickness distribution are optimized to resist bending moments and shear forces generated by non-coaxial connections, preventing leaks and thread deformation during operation
Solution Approach 2:
The connection fitting exhibits non-uniform wall thickness and cross-sectional geometry tailored to specific regions. Areas subjected to higher transverse forces have increased material strength and structural support, while other regions maintain optimized flow characteristics. This localized quality distribution ensures reliable connection under non-coaxial loading conditions
3Adaptability or versatility
If connection openings are positioned for flexible alignment, then adaptability is improved, but manufacturing precision requirements increase
Solution Approach 1:
The connection fitting is designed as a separate intermediary component that decouples the positioning requirements between the fuel pump outlet and the high-pressure region connection. Each connection opening can be manufactured with standard precision relative to the fitting body, while the fitting itself handles the spatial transformation, reducing cumulative precision requirements
Data Source
AI summary
A connection fitting for connecting an outlet of a high-pressure fuel pump to a high-pressure region of a fuel system of an internal combustion engine includes a first connection opening and a second connection opening. The first connection opening has a first opening axis and is configured to connect to the outlet of the high-pressure fuel pump. The second connection opening has a second opening axis and is configured to connect to the high-pressure region. The second opening axis is arranged non-coaxially to the first opening axis.