Brake Testing System Torque Workload Dust Quantification
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Solution Overview
Problem
Current brake testing systems do not quantify brake dust generation, despite growing environmental concerns, as they lack methods to calculate brake work load and its correlation with dust generation.
Innovation Solution
A brake testing system that uses a chassis dynamometer to calculate brake work load by measuring torque and operational time, correlating it with brake dust generation, and includes a sampling unit for elemental analysis to quantify brake dust amounts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional exhaust gas analysis is performed on a chassis dynamometer, then exhaust gas regulation compliance can be confirmed, but brake dust generation cannot be quantified
Solution Approach 1:
The chassis dynamometer testing system is enhanced to perform multiple functions: both exhaust gas analysis and brake dust quantification. By adding the torque acquiring unit, time period acquiring unit, and braking work load calculating unit to the existing exhaust gas analysis capability, the system can simultaneously evaluate both emission types using a single integrated platform, eliminating the need for separate testing systems.
Solution Approach 2:
The braking work load calculating unit serves as an intermediary that processes raw measurement data (torque and time period) to generate meaningful brake dust quantification metrics. This intermediary component bridges the gap between basic sensor measurements and the final quantified brake dust generation, enabling accurate assessment without direct physical collection of brake dust particles.
2Measurement precision
If brake dust amount is to be quantitatively estimated by measuring actual dust generation, then accurate brake dust quantification is achieved, but the measurement process becomes complex and time-consuming
Solution Approach 1:
The patent replaces complex physical measurement methods (such as direct brake dust collection, filtration, and weighing) with a calculated approach based on mechanical parameters. The braking work load calculating unit computes brake dust generation equivalent values using torque and time period measurements, which are already available during normal chassis dynamometer operation, thus avoiding additional time-consuming measurement steps.
Solution Approach 2:
The system utilizes measurements that are already being taken during the test (torque and time period data from the dynamometer operation) to simultaneously determine brake dust generation. Rather than requiring separate dedicated measurements for brake dust, the system makes the brake dust quantification data available as a byproduct of the routine exhaust gas testing process.
3Productivity
If brake work load is calculated using torque and time period measurements, then brake dust generation can be quantified, but additional measurement equipment and processing units are required
Solution Approach 1:
The torque acquiring unit and time period acquiring unit are designed to serve multiple purposes: they provide data for both exhaust gas analysis and brake dust quantification. This multi-functional design allows the system to extract maximum value from existing measurements, enabling brake dust testing without requiring completely separate measurement infrastructure.
Solution Approach 2:
The patent merges the brake dust quantification functionality with the existing exhaust gas analysis system. By combining the torque and time period measurement capabilities with the braking work load calculation, the system integrates multiple testing functions into a unified process, reducing the need for separate dedicated equipment for each type of analysis.
Data Source
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AI summary
A brake testing system of testing a brake of a vehicle driven on a bench having a rotating body, comprises a rotation control unit that controls to make the rotating body rotate at a predetermined rotational speed, a torque acquiring unit that acquires a torque value generated on the rotating body by the brake of the vehicle being operated, a time period acquiring unit that acquires a time period during which the brake of the vehicle is operated, and a braking work load calculating unit that calculates a work load of the brake based on the rotational speed of the rotating body controlled by the rotation control unit, the torque value acquired by the torque acquiring unit, and the time period acquired by the time period acquiring unit.