Mixture Formation Apparatus With Aluminium Oxide Deposit Protection
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Solution Overview
Problem
Existing mixture formation apparatuses in internal combustion engines are prone to corrosion and deposition of nonvolatile organic compounds, which disrupt fuel flow and reduce the operational lifespan.
Innovation Solution
A mixture formation apparatus with a surface layer structure, preferably made of aluminium oxide, having a minimum thickness of 10 μm, optionally combined with pore-sealing layers, is applied to protect against corrosion and deposits, enhancing the apparatus' durability and longevity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the mixture formation apparatus housing is made of aluminium or aluminium alloy, then weight is reduced and corrosion resistance is improved, but deposits of nonvolatile organic compounds still occur on the surface
Solution Approach 1:
The patent applies a composite material solution by combining aluminium or aluminium alloy base material with an anodized aluminium oxide layer. This composite structure provides both the lightweight properties of aluminium and the deposit-resistant properties of the porous aluminium oxide surface, resolving the contradiction between weight reduction and deposit prevention.
Solution Approach 2:
The patent utilizes porous aluminium oxide material created through anodization. The porous structure with specific pore sizes and surface characteristics prevents adhesion of nonvolatile organic compounds while maintaining the lightweight aluminium base, thereby preventing deposits without sacrificing the weight advantage.
2Reliability
If conventional protective coatings are applied to prevent corrosion, then corrosion resistance is improved, but the coatings require complex manufacturing processes and may not prevent deposits
Solution Approach 1:
The anodization process is a self-service solution where the aluminium housing itself serves as both the substrate and the source of the protective layer. The electrochemical process converts the aluminium surface into porous aluminium oxide, eliminating the need for separate coating materials and simplifying the manufacturing process while providing both corrosion and deposit protection.
Solution Approach 2:
The patent changes the physical and chemical parameters of the surface through anodization, creating a porous structure with specific pore diameters (1-10 μm) and layer thicknesses (10-40 μm). This parameter transformation provides protective functionality without requiring additional coating materials or complex manufacturing steps.
3Productivity
If the apparatus operates for extended periods, then productivity is improved, but corrosion and deposits accumulate, reducing lifespan
Solution Approach 1:
The anodized aluminium oxide layer serves as a pre-established protective barrier that cushions the aluminium housing against future corrosion and deposit accumulation. This beforehand protection allows the apparatus to operate for extended periods without degradation, simultaneously improving productivity and lifespan.
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 prevents corrosion and deposition, ensuring longer storage times and uninterrupted operation of the mixture formation apparatus, thereby extending its lifespan and maintaining fuel flow efficiency.
Implementation Method 1
The layer structure has at least one aluminium oxide layer having a layer thickness of at least 10 μm
Data Source
AI summary
A mixture formation apparatus, especially for an internal combustion engine of a working device, has a mixture formation apparatus housing, where a surface of the mixture formation apparatus housing is provided at least partly with a layer structure for protection from corrosion and/or deposits. The layer structure has at least one aluminium oxide layer having a layer thickness of at least 10 μm. A method of manufacturing the mixture formation apparatus, and a working device or an internal combustion engine having the mixture formation apparatus, are disclosed.