Self-locking Internal Damper for Fuel Rail Pressure Stabilization
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Solution Overview
Problem
Existing fuel rail dampers require significant space, have complex structures, and are costly, leading to pressure fluctuations and noise issues in fuel injection systems.
Innovation Solution
A self-locking internal damper with a simple structure, featuring a closed chamber with straight plate sections and bent connecting portions for stable installation, which maintains fuel pressure effectively and reduces costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing dampers are used in fuel rail assemblies, then pressure stabilization function is achieved, but the space required for installation increases
Solution Approach 1:
The damper is integrated within the fuel rail assembly structure itself, with the damping chamber formed as part of the fuel rail body. The straight plate sections are embedded within the fuel rail, allowing the damper functionality to be nested within the existing structural space rather than requiring separate external mounting space.
Solution Approach 2:
The damper structure is merged with the fuel rail assembly, where the straight plate sections serve dual purposes as both structural components of the fuel rail and damping elements. The connecting portions are integrated into the fuel rail body, combining the fuel distribution function with the pressure damping function in a single unified structure.
2Reliability
If existing dampers are used in fuel rail assemblies, then pressure stabilization function is achieved, but the structural complexity increases
Solution Approach 1:
The damper structure is merged with the fuel rail assembly, where the straight plate sections serve dual purposes as both structural components of the fuel rail and damping elements. The connecting portions are integrated into the fuel rail body, combining the fuel distribution function with the pressure damping function in a single unified structure.
Solution Approach 2:
The straight plate sections perform multiple functions: they provide structural support for the fuel rail, create the damping chamber volume, and serve as the damping elements themselves. The connecting portions simultaneously connect the straight plate sections to the fuel rail body and provide sealing surfaces, eliminating the need for separate sealing components.
3Reliability
If existing dampers are used in fuel rail assemblies, then pressure stabilization function is achieved, but the manufacturing cost increases
Solution Approach 1:
The damper structure is merged with the fuel rail assembly, where the straight plate sections serve dual purposes as both structural components of the fuel rail and damping elements. The connecting portions are integrated into the fuel rail body, combining the fuel distribution function with the pressure damping function in a single unified structure.
Solution Approach 2:
The straight plate sections perform multiple functions: they provide structural support for the fuel rail, create the damping chamber volume, and serve as the damping elements themselves. The connecting portions simultaneously connect the straight plate sections to the fuel rail body and provide sealing surfaces, eliminating the need for separate sealing components.
4Reliability
If pressure fluctuation occurs in fuel rail, then fuel injection effect is improved, but vibration and noise increase
Solution Approach 1:
The closed chamber with straight plate sections acts as a pre-configured cushioning volume that absorbs pressure fluctuations before they propagate through the fuel rail system. The bending connecting portions provide elastic compliance that cushions pressure changes, reducing the transmission of vibration and noise while maintaining stable fuel pressure for injection.
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 self-locking internal damper provides a stable fuel pressure stabilizing effect while reducing space requirements and manufacturing complexity, resulting in a cost-effective solution for fuel rail assemblies.
Implementation Method 1
The integral self-locking type stabilizer provided by the utility model utilizes the elastic deformation of the self leaf springs of the stabilizer to realize self locking in the fuel oil distribution pipe of the stabilizer.
Data Source
Figure 1~5
Figure 6~10
Figure 11~15
AI summary
The present application provides a self-locking internal damper and a fuel rail assembly having the same. The self-locking internal damper comprises: a damper body (10) having a closed chamber, each of two ends of the chamber in the length direction thereof having a straight plate section (20) projecting therefrom, with a center line of the straight plate section (20) passing through a center point of the chamber; two connecting portions (30) located at ends of the two straight plate sections (20), respectively, at least one of the two connecting portions (30) being a bent structure formed by extending and bending the straight plate section (20). The self-locking internal damper of the present application has a simple structure and a good fuel pressure stabilizing effect.