Tank internal pipe line, in particular in fuel tanks of motor vehicles

Abstract

An internal tube for tanks, particularly fuel tanks of automobiles, wherein the tube has a fluid channel and a tube wall that encloses the fluid channel, wherein the tube wall has a multilayer designand is composed of at least three layers, with one inner layer based on at least one polyolefin being provided, with at least one central layer based on at least one polyamide being present, and withone outer layer based on at least one polyolefin being provided.

Description

technical field [0001] The invention relates to an internal conduit for a tank, in particular a motor vehicle fuel tank, wherein the conduit has a fluid channel and a tube wall surrounding the fluid channel. The invention also relates to a tank having at least one such internal duct for the tank inside the tank. Background technique [0002] Internal lines for tanks and for vehicle fuel tanks of the type mentioned at the outset are known from practice in various designs. It is also known to implement these internal ducts for tanks in a multi-layer design. However, the internal pipes for tanks known in practice often have the disadvantage that components are washed out of the walls of the internal pipes for tanks due to contact with fluids, for example with fuel. This problem arises, on the one hand, due to the fluid flowing in the pipes, and, on the other hand, due to the fluid located inside the tank coming into contact with the internal pipes for the tank. These flushes...

AI Technical Summary

Problems solved by technology

These flushes impair the functionality of the fuel system in a detrimental manner and in the long run can lead to damage and / or failure of the fuel system

Furthermore, the internal pipes known from practice for tanks often have a delicate structure and are therefore expensive to manufacture

Furthermore, the durability of internal piping for tanks known in practice under mechanical and chemical loads is generally far from ideal

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