Colorimetric Brake Fluid Iron Corrosion Test Kit

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Solution Overview

Problem

Conventional brake fluid tests cannot determine active corrosion of iron components in brake systems, are costly, and require lengthy laboratory analysis, lacking a practical method to assess corrosion risk and determine necessary service levels.

Innovation Solution

A colorimetric test kit using a reagent that changes color with iron concentration, allowing for quick, in-field assessment of brake fluid iron levels and corrosion risk, including FE+2 and FE+3 ions, with optional electronic detection for automated results.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If conventional copper-detecting brake fluid test strips are used, then copper levels can be accurately predicted, but active corrosion of iron components cannot be directly measured

Engineering Contradiction:

Improvecopper level detection accuracyVSAvoidiron corrosion information

Core Design Contradiction:

Measurement precisionVSLoss of information

Solution Approach 1:

The patent applies colorimetric reagents that undergo color changes when exposed to iron ions in brake fluid. Different reagents produce distinct color responses for Fe+2 and Fe+3 ions, enabling visual detection and quantification of iron corrosion levels directly in the brake system, thereby recovering the lost iron corrosion information while maintaining measurement precision.

Inventive Principle:

Principle #32Color changes

2Measurement precision

If inductively coupled plasma spectroscopy (ICP) testing is used to determine dissolved iron, then accurate iron levels can be determined, but the testing process is expensive and time-consuming requiring at least two weeks

Engineering Contradiction:

Improvedissolved iron detection accuracyVSAvoidtesting time

Core Design Contradiction:

Measurement precisionVSLoss of time

Solution Approach 1:

The patent replaces complex mechanical and laboratory-based ICP spectroscopy systems with simple colorimetric chemical reactions. The colorimetric test strips or reagents react chemically with iron ions in brake fluid, producing visible color changes that can be assessed immediately or with minimal waiting time, reducing testing time from two weeks to minutes or hours while maintaining sufficient measurement precision for brake system diagnostics.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The invention uses colorimetric reagents that produce immediate or rapid color changes upon contact with iron ions in brake fluid. This visual indication method eliminates the need for lengthy laboratory analysis, enabling quick assessment of iron corrosion levels in field conditions while preserving accurate detection capability through calibrated color responses.

Inventive Principle:

Principle #32Color changes

3Reliability

If conventional brake fluid testing methods are used, then corrosion prediction can be made, but the testing cost is high and results are not available for immediate service decisions

Engineering Contradiction:

Improvecorrosion prediction accuracyVSAvoidtesting cost and accessibility

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The patent employs disposable colorimetric test strips or reagents that are inexpensive to manufacture and use. These single-use items eliminate the need for expensive laboratory equipment and specialized facilities, making brake fluid corrosion testing accessible to regular service centers and even DIY enthusiasts, thereby significantly reducing testing costs while maintaining reliable corrosion prediction through validated colorimetric reactions.

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

4Ease of operation

If no iron detection capability is provided, then conventional testing procedures can be used, but corrosion risk assessment and service level determination are impossible

Engineering Contradiction:

Improvetesting procedure simplicityVSAvoidcorrosion risk information

Core Design Contradiction:

Ease of operationVSLoss of information

Solution Approach 1:

The patent creates a multi-functional testing system where colorimetric reagents simultaneously detect multiple parameters: Fe+2 ions, Fe+3 ions, copper levels, and overall corrosion risk. This universal approach consolidates multiple testing functions into a single integrated system, enabling comprehensive corrosion risk assessment and service level determination without complicating the operating procedure, as all measurements are obtained through visual color comparison.

Inventive Principle:

Principle #6Universality (Multi-functionality)

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

Enables rapid, cost-effective identification of iron levels and corrosion risk, guiding necessary brake system service and compliance with replacement guidelines, reducing the likelihood of component failure and improving inspection efficiency.

Implementation Method 1

a colorimetric reagent that contacts a brake fluid, resulting in a color that varies with the concentration of iron in the brake fluid

Methodology Applied

Scientific EffectColorimetric reaction: Absorption Spectroscopy

Data Source

PatentUS8216849B2Colorimetric test for brake system corrosion

Publication Date: 2012.07.10 PETTY JON A

AI summary

A method and kit for determining a concentration of iron in brake fluid when contacting a colorimetric reagent such that a color results. The level of iron can be used to determine the amount of active corrosion within a brake system and determine if special service procedures are required.