Brake Disc Shielding Device Tilted Ribs Airflow

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Solution Overview

Problem

Conventional brake disk shielding devices compromise between cooling performance and protection, as they either hinder heat dissipation or allow dirt ingress through openings, leading to reduced brake durability and wear.

Innovation Solution

The brake disk shielding device features tilted, slit-shaped air outlet openings with protruding ribs that deflect air flows perpendicular to the airflow direction, enhancing heat convection while preventing dirt ingress by directing air outward and creating a negative pressure area for effective cooling.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Temperature

If the shielding plate is provided with straight opening slots to improve heat dissipation, then cooling performance is improved, but protection against dirt ingress deteriorates

Engineering Contradiction:
Improvebrake disc temperatureVSAvoiddirt ingress into brake system
Core Design Contradiction:
TemperatureVSObject-affected harmful factors

Solution Approach 1:

The opening slots are segmented into multiple individual slots arranged in a circular pattern, with each slot being narrow and radially oriented. This segmentation allows sufficient total opening area for heat dissipation while maintaining narrow individual openings that prevent dirt ingress into the brake system

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The opening slots are arranged in a circular pattern around the brake disc, utilizing the circumferential dimension. This circular arrangement maximizes the total cooling area while keeping each individual slot narrow and radially oriented, thereby preventing dirt ingress while maintaining effective heat dissipation

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

2Object-affected harmful factors

If the shielding plate covers the brake disc completely to protect against contamination, then protection level is improved, but heat dissipation capability deteriorates

Engineering Contradiction:
Improveprotection against contaminationVSAvoidbrake disc temperature
Core Design Contradiction:
Object-affected harmful factorsVSTemperature

Solution Approach 1:

The shielding plate features localized openings distributed around its circumference, creating different local properties: most areas provide protection while the opening slots provide heat dissipation. The narrow radial orientation of each slot provides protection against tangential dirt ingress while allowing radial heat dissipation

Inventive Principle:
Principle #3Local quality

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

This design optimizes cooling performance while maintaining high protection against contamination, reducing brake operating temperatures and extending brake durability by effectively managing airflow and heat dissipation.

Implementation Method 1

mit Hilfe einer zentrifugal wirkenden Strömung

Methodology Applied
Scientific EffectCentrifugal force: Centrifugal Force

Implementation Method 2

This heat is first stored in the brake discs and then given off to the environment through heat conduction and radiation

Methodology Applied
Scientific EffectHeat conduction: Conduction (thermal)

Implementation Method 3

This heat is first stored in the brake discs and then given off to the environment through heat conduction and radiation

Methodology Applied
Scientific EffectThermal radiation: Thermal Radiation

Implementation Method 4

In addition, heat is dissipated from the brake discs by free and forced convection

Methodology Applied
Scientific EffectConvection: Convection

Data Source

PatentEP2833016B1Cover device for a brake disc
Publication Date: 2017.08.02 MAN TRUCK & BUS SE
  • EP2833016B1 patent drawingFigure 1
  • EP2833016B1 patent drawingFigure 2A~2B
  • EP2833016B1 patent drawingFigure 3

AI summary

A brake disc shielding device comprises at least two air outlet openings (11) in a side surface (13) of the brake disc shielding device (10), wherein the air outlet openings (11) each have a rib (12) projecting from the side surface (13), wherein the ribs are arranged tilted to a radial direction of the side surface (13) such that the ribs (12) are arranged substantially perpendicular to an airflow direction (L) of an airflow deflected by a rotational movement of the brake disc during driving operation.