Sealed Measuring Rim for Comparable Brake Abrasion Sampling
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Solution Overview
Problem
Current methods for measuring brake abrasion on vehicles are inefficient and unreliable, as they require separate housings for each vehicle and wheel, leading to high costs and difficulty in accessing the wheel case, and fail to accurately separate brake abrasion particles from tire or road abrasion, making reliable quantification and classification challenging.
Innovation Solution
A measuring rim with a sealed inner space and rotary feed-through allows for controlled gaseous medium flow, optimizing particle extraction and transport efficiency, and facilitating comparisons across different vehicles and brake systems by maintaining consistent flow conditions, while eliminating the need for special attachments and improving accessibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a separate housing is produced for each vehicle and wheel to enclose the brake, then the brake abrasion can be measured, but the cost increases and the wheel case becomes difficult to access
Solution Approach 1:
The measuring rim is designed as a universal component that can be attached to any wheel rim regardless of vehicle type or brake configuration. The standardized interface and modular design allow the same measuring rim to serve multiple vehicles and wheels, eliminating the need for vehicle-specific housings while maintaining measurement reliability
Solution Approach 2:
The measuring device is nested within the existing wheel rim structure rather than requiring a separate external housing. The measuring rim attaches to the outer rim and creates a measurement chamber that utilizes the wheel's existing geometry, making the wheel case accessible and eliminating complex external housings
2Ease of manufacture
If the wheel rim is not sealed on the inside, then the structure is simpler, but it is not possible to separate brake abrasion from tire or road abrasion
Solution Approach 1:
The measurement space is segmented and isolated using a sealed measuring rim that creates a distinct measurement chamber. This chamber is separated from the external environment through sealing elements, allowing brake abrasion particles to be captured independently from tire or road abrasion while maintaining a simple rim structure
Solution Approach 2:
Sealing elements act as intermediaries between the measuring rim's inner space and the external environment. These seals enable the rim to remain structurally simple while creating an isolated measurement zone that prevents contamination from external particle sources
3Adaptability or versatility
If the flow conditions change with the geometric shape of the measured wheel rim, then different rim geometries can be measured, but comparison of brake abrasion between different vehicles or wheel rims becomes hardly possible
Solution Approach 1:
The measuring rim standardizes the measurement parameters by creating a uniform measurement chamber geometry and flow path regardless of the underlying wheel rim shape. By controlling the internal geometry of the measuring rim and using sealed isolation, the system maintains consistent flow conditions and particle extraction efficiency across different vehicle types and rim geometries, enabling comparable measurements
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 enhances the reliability and reproducibility of brake abrasion measurements, reduces particle loss, and allows for comparable measurements on both test stands and real vehicles, supporting the development of brake systems by providing accurate and efficient particle collection and classification.
Implementation Method 1
via which rotary feed-through a gaseous medium can be supplied into and removed from the inner space of the measuring rim
Data Source
AI summary
Various embodiments of the present disclosure are directed to measuring rims and methods for measuring a brake abrasion of a wheel brake having a measuring rim. In one embodiment, consistent with the present disclosure, a measuring rim is disclosed including a circumferential tire support surface connected on one side to an end wall and on an opposite side to a seal to form an outwardly closed inner space, and a rotary feed-through provided on a central region of the end wall, the rotary feed-through configured to supply a gaseous medium to the inner space of the measuring rim and remove it therefrom.