Disc Brake Braking Band Ventilation Channels for Better Cooling
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Solution Overview
Problem
Existing disc brake systems face inefficiencies in cooling, leading to reduced braking performance and premature deterioration due to high temperatures, with known ventilation channel designs causing load losses and limiting cooling fluid flow rates while maintaining the same dimensions and weight.
Innovation Solution
The design features a braking band with a unique arrangement of connecting fins forming a "double-S" profile, creating tortuous ventilation channels that enhance turbulence and heat exchange, optimizing heat extraction and fluid flow without increasing overall dimensions or weight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional ventilation channel designs are used, then the structural simplicity is maintained, but the cooling efficiency and fluid flow rate are limited
Solution Approach 1:
The patent applies curvature by designing the connecting fins with a double-S profile instead of straight lines. This curved geometry creates tortuous ventilation channels that enhance turbulence and heat exchange efficiency without significantly increasing structural complexity
Solution Approach 2:
The patent introduces complexity in the circumferential direction by offsetting fins between radial ranges. This dimensional arrangement creates variable section ventilation channels that improve cooling efficiency by optimizing fluid flow paths through the braking band
2Productivity
If the dimensions of the brake disc are increased to improve cooling, then the cooling efficiency increases, but the overall dimensions and weight increase
Solution Approach 1:
The patent changes the geometric parameters of the ventilation channels by implementing variable sections with expanded and bottleneck portions. This optimizes the fluid flow rate and heat extraction efficiency within the existing dimensional constraints, improving cooling without increasing weight
3Productivity
If the fluid flow rate is increased to improve cooling, then the heat extraction increases, but the load losses increase
Solution Approach 1:
The tortuous path created by the curved double-S profile fins increases the effective flow path length and enhances turbulence, improving heat exchange efficiency. This allows for effective cooling at lower flow rates, reducing the energy losses associated with high-speed fluid flow
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 solution increases the ventilation fluid flow rate by 25% and heat exchange by 20%, reducing maximum and minimum working temperatures by 60°C and 65°C respectively, while maintaining the same dimensions and weight as existing systems.
Implementation Method 1
it is important for the air current to flow inside the gap in turbulent conditions
Implementation Method 2
the geometry of the ventilation channels defined by the arrangement and shape of the connecting fins is of primary importance for the cooling performance of the braking band of the disc brake
Implementation Method 3
creating tortuous ventilation channels that enhance turbulence and heat exchange, optimizing heat extraction and fluid flow
Data Source
AI summary
A braking band of a disc for disc brake has a first plate and a second plate, a group of connecting fins connecting the first plate and the second plate, defining a module (M) repeated according to a circumferential direction (C-C). The first fin extends along a first longitudinal direction between a radially inner edge and a radially outer edge forming a circumferentially arched first stretch of first fin having a first concavity (R13) kept in the same sense along the entire extension of the first stretch of first fin in the first longitudinal direction, a circumferentially arched second stretch of first fin having a second concavity (R14), a circumferentially arched third stretch of first fin, and a circumferentially arched fourth stretch of first fin. The second fin develops along a second longitudinal direction between the radially inner edge and the radially outer edge. The first fin is shorter than the second fin.