Fuel Injector Holding Device with Conical Enveloping Pot
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing devices for fixing fuel injection nozzles in internal combustion engines are complex, difficult to assemble, and lack ease of disassembly, with existing solutions not meeting standards for simplicity and functionality.
Innovation Solution
A holding device with a fastening flange, enveloping pot, and retaining bush, featuring a rotationally symmetrical enveloping pot with defined resilient properties, and a converging conical jacket design, allows for axial and radial securing of fuel injectors using commercially available keys, with evenly distributed fastening screws and a central fastening screw for secure attachment to the valve cover.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing devices for fixing fuel injection nozzles are used, then the fuel injection nozzle can be secured in the cylinder head, but the assembly and disassembly processes become complex and difficult
Solution Approach 1:
The holding device is divided into distinct modular components: a holding body with a bore for receiving the fuel injection nozzle, a separate clamping element that can be attached to the nozzle, and a fastening screw. This segmentation allows each component to perform its specific function independently, simplifying both assembly and disassembly operations while ensuring reliable securing of the nozzle.
2Reliability
If existing fixing devices are used, then the fuel injection nozzle can be held in position, but the device structure becomes complex
Solution Approach 1:
The clamping function is extracted as a separate clamping element that can be attached to the fuel injection nozzle, rather than integrating it into the holding body. This extraction simplifies the overall structure by allowing the holding body to focus on positioning while the clamping element provides the securing mechanism, reducing structural complexity while maintaining reliable holding.
Solution Approach 2:
The clamping element is designed to be attached to the fuel injection nozzle and then received within the holding body, creating a nested arrangement. The fastening screw passes through the holding body to clamp the nozzle with the clamping element. This nesting approach consolidates multiple functions into a compact integrated assembly, reducing structural complexity.
3Reliability
If existing fixing devices are used, then the fuel injection nozzle can be secured, but disassembly becomes difficult
Solution Approach 1:
The clamping element is pre-attached to the fuel injection nozzle before insertion into the holding body. This preliminary action ensures proper positioning and alignment during assembly, and facilitates easier disassembly since the clamping element remains attached to the nozzle as a unit, allowing the entire assembly to be removed together or the nozzle to be accessed more easily for maintenance.
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 provides a simple, efficient, and easy-to-assemble method for securing fuel injection nozzles, ensuring a secure and functional connection while allowing for easy disassembly, and is suitable for accommodating multiple injectors with enhanced structural integrity and sealing.
Implementation Method 1
the enveloping pot, which is made of resilient steel, for example, has defined resilient properties in the axial direction
Data Source
Figure 1
Figure 2
Figure 3
AI summary
This device is designed for fixing at least one fuel injector nozzle for an internal combustion engine, the fuel injector nozzle being inserted into a bore of a cylinder head and supplying fuel with a nozzle tip to a combustion chamber between a cylinder head and a reciprocating piston, wherein the fuel injector nozzle is held in position by means of a holding device and one or more fastening screws attached to a housing section of the internal combustion engine, such that the holding device clamps the fuel injector nozzle against a stop in the bore of the cylinder head.To optimize the design, the holding device for the fuel injector includes a housing pot that at least partially surrounds the latter, which has a mounting flange on the one hand and a retaining bushing on the other, at least for axial securing of the fuel injector, and in that the holding device is held in position on the housing section via the mounting flange and the mounting screws.