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Fuel hose and injection hose

A technology for fuel pipelines and hoses, which is applied in the direction of hoses, pipes/pipe joints/fittings, pipes, etc., and can solve problems such as damage to sealing performance

Inactive Publication Date: 2008-09-24
SUMITOMO RIKO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is believed to impair sealing performance

Method used

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  • Fuel hose and injection hose
  • Fuel hose and injection hose
  • Fuel hose and injection hose

Examples

Experimental program
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Embodiment Construction

[0076] exist figure 1 2, reference numeral 10 denotes an injection hose (hereinafter simply referred to as a hose) for delivering fuel to be injected from a fuel inlet into a fuel tank in an automobile or motor vehicle. The hose 10 can also be used as other hoses, such as a ventilation pipe, an extraction pipe, a ventilation pipe or a purge pipe. The hose 10 includes a multilayer structure including a resin barrier layer 12 having low fuel permeability, an outer rubber layer 14 laminated outside the resin barrier layer 12, and a defined soft rubber layer laminated inside the resin barrier layer 12. The inner rubber layer 16 of the inner surface layer of the tube 10 . The multi-layer structure is formed through the hose 10 from one end to the other.

[0077] In this case, the entire hose 10 has a curved or curved shape.

[0078] Specifically, the hose 10 has curved portions 10 - 1 , 10 - 2 and 10 - 3 at predetermined axial or longitudinal positions of the hose 10 . Also, t...

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Abstract

A fuel hose and an infusing hose are provided. A fuel hose includes a hard resin barrier layer located in middle of the radial direction of the fuel hose and penetrating an axial end of the fuel hose, therefore enough sealing performance obtained when clamping the hose on the tubing by a hose clamp. A fuel hose (10) for a fuel pipeline in an motor vehicle has a multilayer structure including a resin barrier layer (12) having low permeability to fuel, an outer rubber layer (14) laminated on an outer side of the barrier layer (12) and an inner rubber layer (16) laminated on an inner side of the barrier layer (12) and defining an inner surface layer of the fuel hose (10). The multilayer structure is formed throughout an entire length of the fuel hose (10). A rubber hardness of the inner rubber layer (16) is higher than a rubber hardness of the outer rubber layer (14).

Description

technical field [0001] The present invention relates to a fuel hose comprising a resin barrier layer having low fuel permeability in the radial direction or in its section and conveying fuel, such as a resin-rubber compound for conveying fuel to a fuel tank Filler hose made of material. Background technique [0002] In the injection hose suitable for delivering the fuel injected into the fuel inlet to the fuel tank in the car, a mixture of acrylonitrile butadiene rubber and polyvinyl chloride (NBR / PVC mixture, NBR+PVC) is traditionally used A typical rubber hose made of or similar. This NBR+PVC rubber hose has high vibration absorption, is easy to assemble, and has relatively excellent low fuel (gasoline) permeability. [0003] However, such typical rubber hoses have been unable to adequately meet recent increasing demands for low fuel permeability. [0004] As a countermeasure against this situation, an injection hose as a rubber resin compound hose was developed and use...

Claims

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Application Information

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IPC IPC(8): F16L11/04B32B25/08B32B1/08
Inventor 坂崎一茂杉田健太郎
Owner SUMITOMO RIKO CO LTD