Fuel Injection Valve Mounting System With Spherical Decoupling Element
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Solution Overview
Problem
Existing fuel injection systems experience noise issues due to metallic transitions in the mounting system, which become more pronounced as fuel injection pressure increases, making them undesirable, especially when the engine is idling.
Innovation Solution
A mounting system for fuel injection valves that uses a decoupling element with a spherical abutment surface and a support part, allowing for improved geometric alignment and bracing, reducing mechanical loads and noise transmission, and potentially omitting the need for additional fastening means like welding or retaining rings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a conventional mounting system with metallic transitions is used to connect the fuel injection valve to the fuel-conveying component, then the mechanical connection and structural stability are improved, but noise transmission and vibrations increase
Solution Approach 1:
The patent introduces a decoupling element as an intermediary component between the support part and the fastening body. This decoupling element acts as a mediator that mechanically connects the fuel injection valve to the fuel-conveying component while simultaneously reducing noise transmission and vibrations. The decoupling element absorbs mechanical transitions and prevents direct sound wave propagation through the mounting system, thus resolving the contradiction between structural stability and noise reduction.
Solution Approach 2:
The decoupling element is configured as a composite structure with a hollow sphere geometry that combines different material properties. The hollow sphere design provides both mechanical strength for structural stability and acoustic damping properties for noise reduction. This composite approach allows the single component to simultaneously achieve the functions of structural support and noise isolation, addressing the technical contradiction effectively.
2Reliability
If additional fastening means like welding or retaining rings are used to secure the fuel injection valve, then the connection reliability is improved, but the device complexity and manufacturing difficulty increase
Solution Approach 1:
The patent merges multiple functions into the decoupling element by integrating the support part and fastening body into a single component. This unified structure combines the functions of mechanical support, noise reduction, and secure fastening without requiring separate retaining rings or welding operations. The hollow sphere geometry inherently provides both structural support and connection reliability, simplifying the mounting system while maintaining high connection reliability.
Solution Approach 2:
The decoupling element is designed to self-secure the fuel injection valve through its inherent hollow sphere structure. The spherical geometry with appropriate clearance allows the component to self-align and self-lock into position without requiring additional fastening means. The elastic deformable elements within the decoupling element provide automatic adjustment and secure retention, making the system self-sufficient and eliminating the need for complex external fastening mechanisms.
3Manufacturing precision
If a rigid mounting system is used to ensure precise positioning of the fuel injection valve, then the positioning precision is improved, but noise and vibrations are transmitted more effectively
Solution Approach 1:
The patent changes the physical parameters of the mounting system by introducing elastic deformable elements within the decoupling element. These elements provide controlled flexibility that allows precise positioning through elastic deformation while simultaneously dampening vibrations and noise. The elastic properties enable the system to maintain geometric alignment precision while reducing the transmission of mechanical transitions and vibrations, thus resolving the contradiction between positioning precision and vibration reduction.
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
The solution effectively reduces noise transmission and improves the installation and positioning of fuel injection valves, providing a more robust and quiet operation by decoupling the fuel injection valve from the cylinder head, thus minimizing vibrations and solid-borne sound.
Implementation Method 1
The solution effectively reduces noise transmission and improves the installation and positioning of fuel injection valves, providing a more robust and quiet operation by decoupling the fuel injection valve from the cylinder head, thus minimizing vibrations and solid-borne sound.
Implementation Method 2
The solution effectively reduces noise transmission and improves the installation and positioning of fuel injection valves, providing a more robust and quiet operation by decoupling the fuel injection valve from the cylinder head, thus minimizing vibrations and solid-borne sound.
Data Source
AI summary
A fuel injection valve of a fuel injection system includes a connector piece that is insertable at least partly into a receiving space of a connector body of a fluid-conveying component. In the installed state a support part is disposed on the connector piece, and the connector piece is mounted via the support part on the connector body. The support part has a spherical support surface with which the support part braces at least indirectly against the connector body in order to implement the mounting of the connector piece directly or indirectly on the connector body.