Engine-Driven Air Compressor Pressure Clutch Control for Constant Idle
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Solution Overview
Problem
Conventional engine-driven air compressor systems consume excessive fuel, require frequent maintenance, and generate environmental noise and exhaust due to continuous operation and high idle speed variability, which affects engine responsiveness and electrical power stability.
Innovation Solution
A system that controls an air compressor and engine based on sensed air pressure, using a clutch to disengage the compressor when pressure thresholds are met, reducing energy consumption and allowing the engine to idle at a constant speed, thereby reducing fuel usage and noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the air compressor is continuously driven by the engine, then the compressor is always ready to operate, but fuel consumption increases and maintenance requirements increase
Solution Approach 1:
The system dynamically adjusts the clutch engagement state based on real-time pressure sensor feedback. When the air tank reaches the upper pressure threshold, the clutch disengages to stop compressor operation. When pressure drops below the lower threshold, the clutch re-engages to resume compression. This dynamic on-demand control eliminates continuous operation while ensuring compressor readiness when needed.
Solution Approach 2:
The system employs pressure sensors that continuously monitor air tank pressure and provide feedback to the control system. This feedback loop enables the controller to make real-time decisions about clutch engagement, optimizing the balance between compressor availability and fuel consumption by operating only when pressure thresholds indicate demand.
2Use of energy by moving object
If the engine operates at variable idle speed to match compressor demand, then energy consumption is reduced, but engine responsiveness and electrical power stability deteriorate
Solution Approach 1:
The system segments the control of compressor and generator operations from engine speed control. The clutch engages or disengages the compressor based on pressure thresholds, while the engine maintains a constant idle speed to ensure stable electrical power generation. This segmentation allows independent optimization of each subsystem without compromising overall system performance.
Solution Approach 2:
The clutch acts as an intermediary component that decouples the compressor's operational demands from the engine's rotational speed. By controlling clutch engagement rather than engine speed, the system enables the compressor to operate on-demand while the engine maintains stable idle speed for reliable electrical power output and responsive operation.
3Productivity
If the compressor operates at high idle speed, then compression demand is met, but noise and exhaust emissions increase
Solution Approach 1:
The system employs periodic action by operating the compressor only when needed, based on pressure threshold thresholds. The clutch engages to meet compression demand, then disengages when the upper threshold is reached, creating an on-demand operational pattern. This periodic operation eliminates continuous high-speed running, thereby reducing noise and exhaust emissions while maintaining productivity when required.
Data Source
AI summary
Power systems and methods of controlling an engine driven air compressor include an air compressor driven by an engine via a clutch. A first pressure sensor configured to sense a pressure level at an outlet of the air compressor. An inlet valve configured to close in response to the first pressure sensor sensing a pressure level above a first pressure level. In addition, a second pressure sensor to sense a pressure level below a second pressure level at a housing of the air compressor, wherein the clutch is configured to disengage in response to the second pressure level, wherein the first pressure level is higher than the second pressure level.