Forged Fuel Distributor Rail Holding Elements
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Solution Overview
Problem
Existing fuel distributor rails for spark ignition internal combustion engines face challenges in withstanding high loads and maintaining seal integrity under hydraulic pressure, often requiring multiple fastening elements that can lead to overloading and material inefficiency.
Innovation Solution
A fluid distributor design featuring three forged holding elements attached to a tubular base body made of high-quality stainless steel, which are strategically positioned to counteract reaction forces and reduce valve deflection, allowing for a direct connection of high-pressure outputs and minimizing seal wear, while optimizing material use and reducing the number of fastening elements needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple fastening elements are used to attach the fuel distributor rail, then the attachment reliability is improved, but the device complexity and material usage increase
Solution Approach 1:
The patent integrates the holding elements directly into the forged base body structure, combining the mounting function with the structural body. This merging eliminates the need for separate fastening elements while maintaining secure attachment, thereby reducing device complexity without compromising attachment reliability
Solution Approach 2:
The holding elements serve multiple functions: they provide structural support for the distributor rail, enable secure attachment to the cylinder head, and counteract reaction forces from fuel injection. This multi-functionality reduces the need for additional specialized fastening components
2Reliability
If multiple fastening elements are used to distribute loading, then the seal integrity is improved, but the material usage and manufacturing complexity increase
Solution Approach 1:
The patent strategically positions three holding elements at specific locations on the base body to optimize load distribution. This localized quality approach ensures that seals are protected from overload at critical positions while using minimal material, avoiding the need for uniform distribution through multiple fastening elements
Solution Approach 2:
The holding elements are positioned to counteract the reaction forces generated during fuel injection. This counterbalancing arrangement protects seal integrity by preventing excessive loading while using only three elements instead of multiple fasteners
3Strength
If forged holding elements are used, then the strength and load-bearing capacity are improved, but the material usage and manufacturing complexity increase
Solution Approach 1:
The holding elements are forged as an integrated part of the base body in a single forging process. This merging of the holding elements with the base body structure achieves high strength through forging while simplifying manufacturing by eliminating separate forging and assembly steps for the holding elements
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 design enhances the loading capacity and reduces material usage, preventing seal overload and wear, while maintaining reliable attachment to the cylinder head, thus improving the overall efficiency and durability of the fuel injection system.
Implementation Method 1
withstand high loads and maintaining seal integrity under hydraulic pressure
Implementation Method 2
counteract reaction forces and reduce valve deflection
Implementation Method 3
the fastening elements configured at the base body by the forging process have a high strength
Data Source
AI summary
A fluid distributor for an injection system, in particular a fuel distributor rail for a fuel injection system for mixture-compressing, spark ignition internal combustion engines. The fuel distributor includes a tubular base body, which is preferably processed by a one-stage or multi-stage forging process, a first high-pressure output, a second high-pressure output, a third high-pressure output, and a fourth high-pressure output being provided at the base body. The second high-pressure output is situated offset by a predefined distance compared to the first high-pressure output in a first direction along a longitudinal axis of the tubular base body. The third high-pressure output is situated offset by the predefined distance compared to the second high-pressure output along the longitudinal axis in the first direction, the fourth high-pressure output being situated offset by the predefined distance compared to the third high-pressure output along the longitudinal axis in the first direction.