Brake Dust Measurement with Dilution Airflow to Prevent Clumping
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Solution Overview
Problem
Existing brake dust measurement technologies fail to capture and measure all brake dust particles effectively, leading to inaccurate and non-reproducible results due to clumping and lack of integration with real-world load profiles.
Innovation Solution
A device integrated with a brake test bench that uses an exhaust air duct for dilution and measurement of brake dust particles, featuring a sampling device, particle measuring device, and conveying device, with specific duct dimensions and airflow management to prevent clumping and ensure accurate, real-time measurement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If brake dust particles are captured and transported directly to the measuring device, then measurement can be performed, but particle clumping occurs leading to inaccurate results
Solution Approach 1:
A dilution channel is introduced as an intermediary component between the sampling device and the particle measuring device. This channel mixes brake dust particles with ambient air, preventing particle clumping while maintaining measurement accuracy. The dilution channel acts as a mediator that transforms concentrated particle streams into uniformly distributed particle-laden air flows.
Solution Approach 2:
The particle concentration is changed by introducing ambient air into the dilution channel, transforming highly concentrated brake dust particles into a diluted, uniformly distributed particle mixture. This parameter change from concentrated to diluted state prevents clumping while preserving the ability to measure particle characteristics accurately.
2Measurement precision
If multiple measurement methods are used to capture all brake dust particles, then measurement quality improves, but device complexity increases
Solution Approach 1:
The particle measuring device is designed to perform multiple measurement functions using a single integrated system. The device can count particles, determine their size distribution, and analyze particle characteristics all through one multi-functional measuring apparatus, eliminating the need for multiple separate measurement systems.
Solution Approach 2:
Multiple measurement capabilities are merged into a single particle measuring device. The sampling device, dilution channel, and particle measuring device with multiple measurement functions are combined into one integrated system, reducing overall device complexity while maintaining high measurement quality.
3Productivity
If brake dust particles are measured in real-time during braking, then dynamic load correlation is achieved, but particle clumping occurs due to high concentration
Solution Approach 1:
The dilution channel serves as a mediator that processes high-concentration brake dust particles in real-time during braking operations. By continuously mixing particles with ambient air in the dilution channel, the system maintains real-time measurement capability while preventing particle clumping that would otherwise occur at high concentrations.
Solution Approach 2:
The particle concentration parameter is dynamically adjusted in real-time through the dilution channel during braking measurements. The system transforms concentrated particle emissions into diluted, measurable concentrations while maintaining the temporal correlation with dynamic brake loads, enabling both real-time measurement and measurement accuracy.
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
Enables precise, reproducible measurement of brake dust particles in real-world load conditions, correlating measurement results with brake load parameters, improving measurement accuracy and reliability.
Implementation Method 1
By transporting the brake emissions, especially the brake particles, with the cooling air flow of the exhaust duct, they are diluted, simultaneously creating a homogeneous mixture.
Implementation Method 2
The brake dust particles are then transported by the air flow through the exhaust air duct of the blower system to the actual measuring point.
Implementation Method 3
The brake dust particles are then transported by the air flow through the exhaust air duct of the blower system to the actual measuring point.
Data Source
Figure 1
AI summary
The invention relates to a device for measuring and detecting brake dust particles that have been removed from the brake (3). Said device can comprise a particle measuring device (8) for measuring the number of brake dust particles. The particle measuring device (8) can measure the size of the brake dust particles. A removal device (6) for removing or receiving brake dust particles is mounted in an exhaust air duct (10) which conducts an air stream away from a housing (11) surrounding the brake (3). A device (7) is used to guide the brake dust particles from the removal device to the particle measuring device (8). A fan system with a fresh air channel (9) and the exhaust air channel (10) is used to guide an air stream over the brake (3). The device can be an integral component of a brake test level.