Brake Lining Recesses for Uniform Heat Distribution
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Solution Overview
Problem
Existing brake pads for disc brakes experience uneven heat distribution leading to temperature peaks and cracks in brake discs, resulting in increased wear and frequent maintenance needs.
Innovation Solution
The brake pad features a friction lining with depressions that increase in distance from the radially inner to outer side, and varying widths, ensuring even temperature distribution and enhanced heat dissipation, minimizing the risk of cracks and wear.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the friction lining is made more compressible to reduce temperature peaks and cracks, then the risk of cracks in the brake disc is reduced, but the braking performance deteriorates due to loss of performance during braking
Solution Approach 1:
The friction lining is designed with non-uniform thickness, creating locally different compressibility characteristics. The thinner regions provide higher compressibility to reduce temperature peaks and prevent cracks, while thicker regions maintain structural integrity and braking performance. This local variation in quality allows simultaneous optimization of both reliability and power.
2Reliability
If uniform indentations are provided in the friction lining to prevent surface cracks, then surface crack prevention is improved, but uneven heat distribution persists leading to temperature peaks in brake discs
Solution Approach 1:
The indentations are designed with non-uniform characteristics - varying in size, shape, and distribution density across the friction lining surface. This asymmetric arrangement creates non-uniform compression zones that promote even heat distribution across the brake disc surface, preventing temperature peaks while still maintaining surface crack prevention.
3Temperature
If the friction lining surface area is increased to improve heat dissipation, then heat dissipation is improved, but the braking force is reduced due to lower contact pressure
Solution Approach 1:
Instead of increasing surface area in the traditional planar dimension, the invention utilizes the third dimension by creating indentations that extend into the friction lining thickness. This volumetric approach increases the effective heat dissipation surface area without significantly reducing the contact pressure on the brake disc, thereby maintaining braking force while improving heat dissipation.
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 configuration achieves uniform temperature distribution across the brake disc, reducing the likelihood of cracks and wear, thereby extending maintenance intervals and maintaining brake performance.
Implementation Method 1
This measure increases the surface of the friction lining in the area where the greatest frictional forces occur, which in turn leads to significantly better heat dissipation and thus cooling of the friction lining and the brake disc.
Implementation Method 2
Due to this uniform introduction of temperature into the friction lining, only very small temperature gradients occur inside the brake disc.
Implementation Method 3
The friction linings and the brake discs expand most in their friction center, so that there is an increase in pressure and temperature in this area
Data Source
Figure 1
AI summary
The lining (1) has a brake lining carrier (2) and friction lining (3) arranged on the brake lining carrier. The friction lining has four recesses (6, 7, 8, 9) that run in a longitudinal extension of the friction lining and parallel to each other. Spaces (11-13) formed between the adjacent recesses reduce from a radially inner lying side (14) of the friction lining to a radially outer lying side (15) of the friction lining in relation to a brake disk (4). The recesses run in straight lines or in the form of circular segments. The recesses are symmetrically aligned to a radial line (20).