Multilayer Vehicle Pipeline for Barrier and Mechanical Stability
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Solution Overview
Problem
Existing motor vehicle pipelines for temperature control and cooling systems face challenges in achieving adequate barrier properties and mechanical stability while maintaining low manufacturing costs and flexibility across different applications.
Innovation Solution
A multi-layer pipeline design featuring an outer layer of polyamide, an adhesion promoter layer, an inner layer of thermoplastic elastomer, and an optional barrier layer of polypropylene, optimized for a total layer thickness of 0.3 to 3.0 mm, ensuring robust barrier properties and mechanical stability with minimal manufacturing effort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multi-layer pipelines are used to improve barrier properties and mechanical stability, then reliability is improved, but manufacturing complexity increases
Solution Approach 1:
The pipeline uses a composite multi-layer structure consisting of an outer layer (1-3 mm) made of polyamide or polyolefin, an intermediate adhesion promoter layer, and an inner layer made of thermoplastic elastomer. This composite structure provides enhanced barrier properties against fluid permeation and improved mechanical stability through the synergistic combination of different material properties, while the layers are bonded together to form a unified component that can be manufactured in one process.
Solution Approach 2:
The pipeline wall is segmented into multiple functional layers, each with specific thickness and material composition. The outer layer provides mechanical strength and environmental resistance, the adhesion promoter layer ensures strong bonding between layers, and the inner layer provides chemical resistance and low permeability to the conveyed fluid. This segmentation allows each layer to be optimized for its specific function while maintaining overall system performance.
2Adaptability or versatility
If different pipelines are used for different applications to meet specific requirements, then adaptability is improved, but device complexity increases
Solution Approach 1:
The multi-layer pipeline design provides a universal solution that can be adapted to various automotive applications including cooling circuits, heating circuits, air conditioning systems, and fuel systems. By adjusting the material composition, layer thicknesses, and specific material selections within the defined ranges, the same basic pipeline structure can serve multiple functions and meet different application requirements without needing entirely different pipeline designs.
Data Source
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AI summary
A multi-layered automotive pipeline for conveying at least one fluid medium, wherein the pipeline has a fluid channel and a pipe wall surrounding the fluid channel. The pipe wall is multi-layered and has at least three layers with the following layer structure: an outer layer of at least one polyamide, in particular at least one aliphatic polyamide, is provided; an adhesion promoter layer and an inner layer of at least one thermoplastic elastomer are provided. The total layer thickness d of the pipe wall is 0.3 to 3.0 mm.