Compressor Exhaust Valve Leak Detection via Pressure Monitoring
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Solution Overview
Problem
Compressors face challenges in detecting leak conditions, particularly in exhaust valves, which can lead to performance reductions and eventual failures, resulting in costly maintenance and downtime, especially in vehicle applications where compressor failures can cause road failures.
Innovation Solution
A system and method that involves monitoring the pressure of compressed air within a reservoir and actuating a piston to detect changes, allowing a controller to identify leak conditions through pressure fluctuations, enabling proactive maintenance and reducing the risk of compressor failure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional compressor operation without monitoring is used, then device complexity is reduced, but reliability deteriorates due to undetected leak conditions leading to failures
Solution Approach 1:
The compressor system performs self-diagnosis by monitoring its own pressure fluctuations during piston actuation to detect exhaust valve leak conditions, eliminating the need for external diagnostic equipment or complex additional monitoring systems
Solution Approach 2:
The system uses pressure sensors to continuously monitor compressed air pressure in the reservoir and provides feedback to the controller, which analyzes pressure changes during piston cycles to detect valve leaks, enabling closed-loop self-monitoring
2Measurement precision
If pressure monitoring during piston actuation is implemented, then detection precision of leak conditions is improved, but use of energy increases due to continuous monitoring and actuation
Solution Approach 1:
The system performs leak detection by monitoring pressure fluctuations during periodic piston actuation cycles rather than continuous monitoring, reducing energy consumption while maintaining detection precision through rhythmic sampling at compressor operating cycles
Solution Approach 2:
The system uses the existing piston actuation motion (excessive action already present for compression) to simultaneously perform leak detection, avoiding the need for separate dedicated detection actuation and reducing additional energy requirements
3Loss of time
If early detection of leak conditions is implemented, then loss of time for maintenance is reduced, but device complexity increases due to detection and control systems
Solution Approach 1:
The controller automatically detects leak conditions and can initiate corrective actions without external intervention, enabling the system to self-monitor and self-report issues that would otherwise require manual inspection and diagnosis
Solution Approach 2:
The system detects exhaust valve leak conditions before they lead to complete compressor failure, allowing preliminary maintenance actions to be taken while the compressor is still operational or can be scheduled for service during planned downtime
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
The solution effectively detects leak conditions in compressor exhaust valves, enabling early intervention and reducing maintenance costs by allowing for preventative actions, thus minimizing downtime and secondary damage to compressor components.
Implementation Method 1
monitoring a pressure of compressed air within a reservoir... detecting a leak condition of an exhaust valve through recognition of a change in the monitored pressure
Data Source
AI summary
Systems and methods of the invention relate to diagnosing a compressor. A method may include monitoring a pressure of compressed air within a reservoir, actuating a piston within a cylinder of the compressor, and detecting a leak condition of an exhaust valve of the cylinder through recognition of a change in the monitored pressure of the compressed air within the reservoir during a time period in which the piston is actuated. A system is also disclosed including an engine, a compressor operatively connected to the engine, and a controller that is operable to determine a condition of the compressor.