Air Brake Filter with Bypass Pathway and Clog Indicator
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Solution Overview
Problem
Air brake systems in heavy vehicles, such as semi-trailer trucks, face frequent clogging of filters due to dirt and debris, requiring daily maintenance to ensure proper brake function, which is inefficient and unreliable.
Innovation Solution
An air brake filter assembly with a clogged filter indicator and a bypass pathway that automatically activates when the filter becomes clogged, ensuring continuous brake function while alerting the user to replace the filter, preventing multiple false reset attempts and maintaining air tightness through o-rings and sealing components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a filter is used to protect air brake systems from dirt and debris, then the reliability of the brake system is improved, but the filter becomes clogged frequently requiring daily maintenance
Solution Approach 1:
The bypass pathway is pre-configured and automatically activates when the filter becomes clogged, allowing the system to maintain functionality without immediate manual intervention. The clogged filter indicator provides advance warning before complete system failure occurs.
Solution Approach 2:
The system automatically detects when the filter is clogged through the indicator mechanism and activates the bypass pathway without requiring user diagnosis or decision-making, enabling self-monitoring and self-protection capabilities.
2Reliability
If the filter is cleaned daily to ensure proper brake function, then the brake system reliability is maintained, but the operational efficiency decreases
Solution Approach 1:
The clogged filter indicator provides visual feedback about the filter's condition, allowing operators to monitor system status and perform maintenance only when necessary rather than on a fixed daily schedule, optimizing the balance between reliability and productivity.
Solution Approach 2:
The maintenance schedule transitions from a static daily requirement to a dynamic condition-based approach where maintenance frequency adapts to actual filter clogging rates, allowing operations to continue at full efficiency until the indicator signals the need for maintenance.
3Duration of action of moving object
If a clogged filter is reset without replacement to maintain operation, then continuous operation is achieved, but false reset attempts occur and system safety is compromised
Solution Approach 1:
The lockable indicator mechanism prevents premature or false resetting by requiring deliberate user action to reset the system after a clog alert, ensuring that operators acknowledge and address the underlying issue before resuming normal operation.
Solution Approach 2:
The mechanical lockable indicator system replaces simple resettable indicators with a more sophisticated mechanism that incorporates locking and unlocking features, preventing inadvertent resets while maintaining the ability to reset after proper maintenance is performed.
4Reliability
If a bypass pathway is added to allow air to bypass the clogged filter, then continuous brake function is ensured, but the device complexity increases
Solution Approach 1:
The bypass pathway is integrated into the existing filter housing structure, combining the filtration system and bypass capability into a single unified assembly rather than adding separate independent components, thereby minimizing the increase in overall system complexity.
Solution Approach 2:
The filter assembly is designed to serve multiple functions: normal filtration mode, automatic bypass mode when clogged, and indicator/alert function. This multi-functionality is achieved within a single integrated structure rather than requiring separate systems for each function.
Data Source
AI summary
An air brake filter assembly and methods are shown. Example configurations include a filter lock that holds an indicator in an actuated position after a filter has become clogged. Example configurations may also include a bypass pathway to allow air to bypass the filter when the filter is clogged.