Liquid Cooled Brake Rim with Integrated Heat Conductive Members

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Solution Overview

Problem

Existing liquid cooled brake technologies do not effectively manage heat dissipation and wear reduction in vehicle brake systems, leading to suboptimal braking performance and increased wear.

Innovation Solution

A liquid cooled vehicle brake design featuring a brake shoe with an annular rim and a fluid flow passage formed by a water jacket and webs, incorporating heat conductive members and a heat radiator for enhanced heat transfer and cooling, along with fluid connections for efficient coolant circulation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Temperature

If liquid cooling is applied to brake systems, then heat dissipation is improved, but brake wear is not sufficiently reduced

Engineering Contradiction:

Improveheat dissipationVSAvoidbrake wear

Core Design Contradiction:

TemperatureVSReliability

Solution Approach 1:

Heat conductive members are introduced as intermediary elements between the brake friction material and the coolant flow passage. These members act as thermal mediators that efficiently transfer heat from the friction material to the coolant, resolving the insufficient heat dissipation while preventing brake wear through effective temperature control

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent replaces conventional direct cooling mechanisms with a sophisticated thermal management system using heat conductive members and optimized coolant flow passages. This substitution creates a more efficient thermal transfer pathway that addresses both heat dissipation and wear reduction simultaneously

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Ease of manufacture

If conventional cooling structures are used, then manufacturing is simpler, but heat transfer efficiency is insufficient

Engineering Contradiction:

Improvestructural simplicityVSAvoidheat transfer efficiency

Core Design Contradiction:

Ease of manufactureVSLoss of energy

Solution Approach 1:

The patent employs composite construction combining the brake friction material layer with integrated heat conductive members and coolant flow passages. This composite structure achieves superior heat transfer efficiency by creating direct thermal pathways while maintaining manufacturability through integrated design

Inventive Principle:

Principle #40Composite materials

Solution Approach 2:

The heat conductive members are nested within the brake friction material layer, with coolant flow passages positioned adjacent to them. This nested arrangement maximizes heat transfer efficiency by creating concentric thermal pathways from the friction surface through the conductive members to the coolant, while keeping the overall structure compact and manufacturable

Inventive Principle:

Principle #7Nested doll (Nesting)

3Loss of energy

If heat conductive members are added to improve heat transfer, then thermal conductivity is improved, but device complexity increases

Engineering Contradiction:

Improvethermal conductivityVSAvoidcomponent quantity

Core Design Contradiction:

Loss of energyVSDevice complexity

Solution Approach 1:

The heat conductive members serve multiple functions simultaneously: they conduct heat from the friction material, structurally support the friction material layer, and provide thermal pathways to the coolant flow passages. This multi-functionality reduces the need for separate components, thereby limiting the increase in device complexity while achieving improved thermal conductivity

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

The solution effectively reduces brake wear and maintains maximum braking power by efficiently transferring heat from the brake friction material to the coolant, thereby improving braking performance and extending the life of brake components.

Implementation Method 1

a heat conductive member is disposed within the layer of brake friction material and coupled in heat transfer relationship with the rim

Methodology Applied

Scientific EffectThermal conduction: Conduction (thermal)

Implementation Method 2

A fluid flow passage is carried on a radially inner surface of the rim for circulating fluid past the rim to remove heat from the rim and the layer of brake friction material

Methodology Applied

Scientific EffectConvection cooling: Convection

Implementation Method 3

A heat radiator member can be coupled in heat transfer relationship with the rim, and disposed in the fluid flow passageway

Methodology Applied

Scientific EffectThermal conduction: Conduction (thermal)

Data Source

PatentUS9657795B2Stand alone liquid cooled brake system

Publication Date: 2017.05.23 ANNIS RICHARD

AI summary

A fluid cooled vehicle brake includes a fluid flow passage disposed in fluid communication with a brake shoe rim carrying a layer of friction material. A pair of spaced support webs are coupled to an inner surface of an annular inner surface of the rib. A water jacket is sealingly joined to the pair of webs and the inner surface of the rim to form a fluid flow passage between an inlet port formed in one of the support webs along the inner surface of the rim and out through an outlet port formed in one of the support webs. High thermal conductive members may be disposed within the layer of friction material to conduct heat to the rim. Heat radiator members are mounted within the coolant passageway.