Brake Hydraulic Circuit Isolation for Minute Oil Leak Detection
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Solution Overview
Problem
Conventional methods struggle to detect minute oil leaks in brake systems, leading to potential accidents due to the difficulty in identifying and addressing such leaks, especially when pressure values based on piston position are used.
Innovation Solution
A method involving closing and monitoring hydraulic circuits to detect brake oil leaks by comparing leak amounts and flow rates between two separate hydraulic circuits, using inlet valves and leak detectors to determine the location of leaks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If pressure values based on piston position are used to detect oil leaks, then the detection method is simple, but minute oil leaks cannot be detected
Solution Approach 1:
The hydraulic circuit is divided into multiple segments (first hydraulic circuit and second hydraulic circuit), each monitored independently. This segmentation allows precise identification of leak locations by comparing pressure changes in different segments, thereby detecting minute leaks that would be indistinguishable in a unified system.
Solution Approach 2:
Different monitoring strategies are applied to different parts of the hydraulic system. The first and second hydraulic circuits have separate pressure sensors and independent monitoring, allowing localized detection of leaks with high precision while maintaining overall system simplicity.
2Device complexity
If conventional pressure-based detection is used, then the system structure is simple, but leak location cannot be identified
Solution Approach 1:
The hydraulic system is segmented into first and second hydraulic circuits with independent pressure monitoring. By comparing pressure changes in each segment, the system can identify which specific circuit is leaking while maintaining a relatively simple overall structure.
Solution Approach 2:
Pressure sensors act as intermediaries between the hydraulic circuits and the controller. These sensors provide localized pressure information that helps the controller determine leak locations without requiring complex direct observation systems.
3Ease of operation
If a single hydraulic circuit is monitored, then the monitoring is simple, but minute leaks are not detected until all brake oil leaks out
Solution Approach 1:
The monitoring system is divided into independent monitors for the first and second hydraulic circuits. Each circuit is monitored separately, allowing early detection of minute leaks in either circuit before they compromise the entire brake system, thereby improving reliability while keeping each monitoring operation simple.
Solution Approach 2:
The system performs preliminary monitoring of pressure changes in both hydraulic circuits to detect early signs of leakage. By continuously monitoring pressure differentials before significant oil loss occurs, the system can alert operators to potential issues before they become critical safety problems.
Data Source
AI summary
Disclosed is an oil leak detecting method of a brake system and an oil leak detecting system thereof. The method includes: closing a first hydraulic circuit and monitoring an amount of a leak of brake oil in a second hydraulic circuit; closing the second hydraulic circuit and monitoring an amount of a leak of brake oil in the first hydraulic circuit; and determining where brake oil leaks from among the first hydraulic circuit and the second hydraulic circuit. The first hydraulic circuit controls a flow of hydraulic pressure transmitted to two wheel cylinders. The second hydraulic circuit controls a flow of hydraulic pressure transmitted to other two wheel cylinders.