Resin Fuel Inlet Integrating Fluid Introduction Portion

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Solution Overview

Problem

Existing fuel inlets for vehicles are heavy and costly due to the use of metal materials and welding processes, which fail to effectively prevent foamed fluid from scattering during fuel supply, leading to increased weight and assembly costs.

Innovation Solution

A fuel inlet body made of resin, featuring a reception pipe, filler pipe connection, breather pipe connection, and a fluid introduction portion that causes foamed fluid to flow along the inner wall surface for liquefaction, preventing scattering and reducing weight and assembly costs.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a metal restrictor is used to prevent foamed fluid from scattering, then the foamed fluid scattering prevention is improved, but the weight increases

Engineering Contradiction:
Improvefoamed fluid scattering preventionVSAvoidfuel inlet weight
Core Design Contradiction:
ReliabilityVSWeight of moving object

Solution Approach 1:

The patent replaces the durable metal restrictor with a resin-made fluid introduction portion that is integrated into the fuel inlet body. This resin component is designed to be sufficient for the application's lifespan while being lighter and more cost-effective than metal alternatives.

Inventive Principle:
Principle #27Cheap short-living objects (Disposable)

Solution Approach 2:

The fluid introduction portion is integrally molded with the fuel inlet body as a single resin component, eliminating the need for separate metal restrictor parts and their associated welding fixtures. This merging reduces both weight and assembly complexity.

Inventive Principle:
Principle #5Merging (Combining)

2Reliability

If welding is used to fix the restrictor to the filler pipe, then the foamed fluid scattering prevention is improved, but the assembly cost increases

Engineering Contradiction:
Improvefoamed fluid scattering preventionVSAvoidassembly cost
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The fluid introduction portion is integrally molded with the fuel inlet body in a single resin manufacturing process, eliminating the need for separate welding operations to attach a metal restrictor to the filler pipe, thereby reducing assembly cost and complexity.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The patent replaces the mechanical welding system with a resin molding system where the fluid introduction portion is formed as an integral part of the fuel inlet body through injection molding or similar resin forming processes.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

3Reliability

If a metal restrictor is used to prevent foamed fluid from scattering, then the foamed fluid scattering prevention is improved, but the assembly complexity increases

Engineering Contradiction:
Improvefoamed fluid scattering preventionVSAvoidassembly complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The fluid introduction portion is integrally molded with the fuel inlet body as a single resin component, eliminating the need for separate metal restrictor parts and their associated welding fixtures, thereby reducing assembly complexity.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The resin-made fluid introduction portion is designed with an optimized shape that integrates multiple functions (fluid guidance, structural support, and scattering prevention) into a single segmented component that simplifies the overall assembly.

Inventive Principle:
Principle #1Segmentation

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 resin-based fuel inlet effectively prevents foamed fluid from scattering during fuel supply, achieving weight reduction and cost savings while ensuring reliable operation.

Implementation Method 1

The fluid introduction portion causes foamed fluid to flow along an inner wall surface of the reception pipe portion while liquefying the foamed fluid

Methodology Applied
Scientific EffectLiquefaction: Phase Change

Data Source

PatentUS10017052B2Fuel inlet
Publication Date: 2018.07.10 YACHIYO IND CO LTD
  • US10017052B2 patent drawing
  • US10017052B2 patent drawing
  • US10017052B2 patent drawing

AI summary

A fuel inlet 10 includes a fuel inlet body 11 that is formed of resin including a reception pipe portion 20, a filler pipe connection pipe portion 30, a breather pipe connection pipe portion 40, and a fluid introduction portion 60. The reception pipe portion 60 receives a fuel nozzle 3. The filler pipe connection pipe portion 30 is located on a lower side of the reception pipe portion 20 and is connected to a filler pipe 31. The breather pipe connection pipe portion 40 is located on an upper side of the reception pipe portion 20 and is connected to a breather pipe 41. The fluid introduction portion 20 causes foamed fluid to flow along an inner wall surface of the reception pipe portion 20 while liquefying the foamed fluid, the foamed fluid flowing from the breather pipe connection pipe portion 40 to the reception pipe portion 20. The fuel inlet body 11that is formed of resin is formed by integrally molding the reception pipe portion 20, the filler pipe connection pipe portion 30, the breather pipe connection pipe portion 40, and the fluid introduction portion 60.