Brake Particle Filter Housing With Air-Cooled Disc Encapsulation

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Solution Overview

Problem

Brake devices release harmful particles into the air, which are inhaled by people and contribute significantly to air pollution, and existing solutions fail to effectively filter these particles due to the need for air-cooling of brake discs, leading to inadequate protection of the environment and human health.

Innovation Solution

A filter for brake devices that encapsulates the brake device within an inner space, using a cylindrical tubular filtering element and a dismantlable axial fastening system to retain particles, allowing easy replacement or washing of the filtering element, and includes soundproofing and protection against external agents.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Temperature

If the brake disc is air-cooled by exposing it to external air flow, then the brake disc can dissipate heat effectively, but harmful particles are released into the air causing pollution

Engineering Contradiction:
Improvebrake disc temperatureVSAvoidbrake particles pollution
Core Design Contradiction:
TemperatureVSObject-generated harmful factors

Solution Approach 1:

The brake assembly is segmented into an enclosed brake housing and a separate filtering system. The brake disc remains enclosed within the housing while a dedicated filter element handles particle separation, allowing the cooling function to be maintained through controlled air flow paths that separate particle generation from particle release.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

A filter element is introduced as an intermediary component between the brake disc and the external environment. This filter mediates the air flow, allowing heat dissipation while trapping harmful particles. The filter acts as a barrier that separates the cooling function from the pollution problem.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Object-generated harmful factors

If the brake disc is fully encapsulated to prevent particle release, then harmful particles are contained, but the brake disc cannot be air-cooled effectively

Engineering Contradiction:
Improvebrake particles containmentVSAvoidbrake disc cooling efficiency
Core Design Contradiction:
Object-generated harmful factorsVSTemperature

Solution Approach 1:

The encapsulation is segmented with dedicated air flow paths and a separate filtering section. The brake housing encloses the disc but includes controlled openings for air intake and exhaust, with the filter positioned to intercept particles in the exhaust flow, thus maintaining both containment and cooling.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The solution moves from a simple enclosed/open dichotomy to a multi-dimensional approach by adding a filtering dimension. The brake assembly is enclosed in one dimension (housing), while air flow is maintained in another dimension (through controlled paths), and particle separation is achieved in a third dimension (via filter media).

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

3Object-generated harmful factors

If a filter system is added to capture brake particles, then particle pollution is reduced, but the device complexity increases

Engineering Contradiction:
Improveparticle filtration efficiencyVSAvoidbrake system complexity
Core Design Contradiction:
Object-generated harmful factorsVSDevice complexity

Solution Approach 1:

The filter element is merged with the existing brake housing structure rather than being a completely separate component. The filter is integrated into the housing walls or end caps, combining the particle filtration function with the structural enclosure, thus reducing overall system complexity.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The brake housing serves multiple functions: it provides structural support, encloses the brake components, directs air flow for cooling, and houses the filtering element. This multi-functionality reduces the need for additional separate components, thereby limiting the increase in device complexity.

Inventive Principle:
Principle #6Universality (Multi-functionality)

4Reliability

If the filtering element is made permanent and integrated, then particle retention is improved, but maintenance and replacement become difficult

Engineering Contradiction:
Improveparticle retention reliabilityVSAvoidfilter element replacement
Core Design Contradiction:
ReliabilityVSEase of repair

Solution Approach 1:

The filtering system is segmented into a removable filter element and a permanent housing structure. The filter element is designed as a separate, extractable component that can be easily removed and replaced without disassembling the entire brake assembly, maintaining both retention reliability and ease of maintenance.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The filter element is designed with dynamic accessibility - while permanently integrated for reliable particle retention during operation, it can be dynamically removed and replaced when needed. This is achieved through removable fastening mechanisms or snap-fit connections that allow easy access during maintenance.

Inventive Principle:
Principle #15Dynamics

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 filter effectively captures and contains brake particles, reducing air pollution and protecting human health, while ensuring the brake device remains air-cooled and maintaining operational efficiency.

Implementation Method 1

a cylindrical tubular filtering element and a dismantlable axial fastening system to retain particles

Methodology Applied
Scientific EffectFiltration: Filter (physical)

Implementation Method 2

a brake disc cannot be fully encapsulated because it needs to be air-cooled

Methodology Applied
Scientific EffectConvection cooling: Convection

Data Source

PatentEP4075007B1Filter for a brake device
Publication Date: 2026.03.11 BRL BRAKE SOLUTIONS SL
  • EP4075007B1 patent drawingFigure 1
  • EP4075007B1 patent drawingFigure 2
  • EP4075007B1 patent drawingFigure 3

AI summary

The invention relates to a filter for a brake device, comprising a case (1, 1'), a cylindrical tubular filtering element (2) and a dismantlable axial fastening system. The filtering element (2) is located inside the case (1, 1') and the case (1, 1') includes a cylindrical tubular lateral wall (3) having two opposite end edges, a first and a second. The filtering element (2) sits on an internal surface of the lateral wall (3) of the case (1, 1'). The dismantlable axial fastening system provides axial fastening of the filter when same is assembled in the brake device (F), axial fastening of the filtering element (2) inside the case (1,1'), and means for assembling and dismantling the filter. The purpose of the filter is to collect all the particles harmful to health that are released each time the brake device brakes, preventing said particles from being transferred to the air that is breathed.