U-Shaped Holding Component for Fuel Injector Angular Positioning
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Solution Overview
Problem
Existing fuel injection systems for internal combustion engines face challenges in reducing noise transmission and ensuring precise angular positioning of fuel injectors relative to injector cups during assembly.
Innovation Solution
A U-shaped holding component with parallel supporting arms engaging an annular groove and resilient arms for secure positioning of the fuel injector within the injector cup, which also includes a depending leg for accurate angular alignment, replacing the need for multiple components and simplifying assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a holding element is used to suspend the fuel injector in an injector cup, then noise transmission is reduced, but the angular positioning precision of the fuel injector relative to the injector cup deteriorates
Solution Approach 1:
The holding element serves as an intermediary component between the fuel injector and the injector cup. It provides mechanical isolation to reduce noise transmission while incorporating specific geometric features (protrusions and recesses) that act as precision positioning mechanisms, thereby resolving the contradiction between noise reduction and angular positioning accuracy.
Solution Approach 2:
The holding element exhibits local quality by having different functional zones: some regions provide resilient suspension for noise isolation, while other regions (protrusions and recesses) provide rigid geometric constraints for precise angular positioning. This localized functional differentiation allows simultaneous achievement of noise reduction and positioning precision.
2Manufacturing precision
If multiple separate components are used to secure and position the fuel injector, then the angular positioning precision is improved, but the device complexity and assembly process increase
Solution Approach 1:
The invention merges multiple separate components (holding element for suspension and positioning elements for angular alignment) into a single integrated holding element. This unified component incorporates both noise isolation functionality and precise angular positioning features, thereby reducing device complexity and assembly steps while maintaining positioning precision.
Solution Approach 2:
The holding element is designed as a multi-functional component that simultaneously performs suspension, noise isolation, and angular positioning functions. This universality eliminates the need for multiple separate components, simplifying the overall device structure and assembly process while maintaining precise angular positioning capability.
3Reliability
If multiple separate components are used for securing the fuel injector, then the securing reliability is improved, but the production costs and inventory requirements increase
Solution Approach 1:
Multiple separate securing and positioning components are merged into a single integrated holding element, reducing the quantity of components from two or more to one. This consolidation maintains securing reliability through the integrated design while reducing production costs and inventory requirements.
Solution Approach 2:
The holding element is designed as a universal component that performs multiple functions (securing, positioning, and isolating) that previously required separate components. This multi-functionality reduces the total number of parts needed, lowering production and inventory costs while maintaining or improving securing reliability.
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 reduces noise transmission, lowers production costs, and streamlines the assembly process by using a single component to secure the fuel injector, ensuring precise alignment and reducing potential errors and inventory costs.
Implementation Method 1
two resilient arms extending from a base part of the holding component for engaging the outer surface of the injector cup
Data Source
Figure 1~2
Figure 3
AI summary
A holding component (14) for securing a fuel injector (4) to an injector cup (2) is disclosed. It comprises a generally U-shaped holding element having two generally parallel supporting arms (18) for engaging opposite sides of an annular groove (11) in the fuel injector to secure the fuel injector (4) in the injector cup (2). The holding component (14) further includes two resilient arms (28) extending from a base part (16) of the holding component (14) for engaging the outer surface of the injector cup (2) and at least one dependingleg (22) engageable in a corresponding receiving part on the fuel injector (4) to accurately position the fuel injector (4) angularly relative to the injector cup (2). A fuel injection assembly for an internal combustion engine having a holding component (14) is also disclosed.