Air Suspension Compressor Tank Pressure Recovery
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Solution Overview
Problem
In closed type air suspension systems, compressed air leaks over time when a vehicle is parked, leading to a lower vehicle height, which requires additional time to adjust back to the reference height due to the compressor's inability to intake air from a low-pressure tank.
Innovation Solution
An air suspension system with a compressor, tank, and air dryer that maintains pressure by increasing the tank pressure when it falls below a predetermined level, using the compressor to supply air from the tank and intake outside air as needed to adjust the vehicle height quickly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the vehicle is parked for a long time, then compressed air leaks from the air suspension or seal parts, but the tank pressure remains insufficient for quick height adjustment
Solution Approach 1:
The system performs preliminary compression of air into the tank before the vehicle is actually used. The control unit activates the compressor to fill the tank with compressed air when the vehicle is first started, ensuring that sufficient compressed air is available in advance for quick height adjustments, even after long parking periods
Solution Approach 2:
The system uses itself to solve the problem by utilizing the compressor and tank as part of the air suspension system to generate and store the compressed air needed for height adjustment, rather than relying entirely on external atmospheric air compression during the adjustment process
2Ease of operation
If the compressor takes in atmospheric air for height adjustment, then the vehicle height can be adjusted, but it takes extra time to compress the air
Solution Approach 1:
The compressor pre-compresses air into the tank before height adjustment is needed. The control unit monitors tank pressure and activates the compressor to fill the tank when pressure drops below a threshold, ensuring compressed air is ready in advance rather than compressing atmospheric air during the adjustment moment
Solution Approach 2:
The tank acts as an intermediary storage device between the compressor and the air suspension system. It stores compressed air that can be quickly supplied to the air suspension without requiring real-time compression of atmospheric air, thus mediating the time delay between compression and adjustment needs
3Productivity
If the tank pressure is low after air supply, then the system can maintain operation, but the compressor cannot intake air from the low-pressure tank efficiently
Solution Approach 1:
The control unit continuously monitors the tank pressure and uses this feedback to determine when to activate the compressor. When pressure drops below a predetermined threshold, the control unit activates the compressor to replenish the tank, creating a feedback-based pressure maintenance system
Solution Approach 2:
The compressor operates periodically rather than continuously, activating only when the control unit detects that tank pressure has dropped below the threshold. This periodic operation maintains pressure within acceptable ranges while minimizing unnecessary compressor runtime
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
This solution shortens the time required to adjust the vehicle height and stabilizes the system by maintaining the necessary pressure, ensuring the vehicle can quickly return to the reference height even with changes in load weight.
Implementation Method 1
a compressor configured to compress air; a tank configured to store the air compressed by the compressor
Implementation Method 2
an air dryer provided on an ejection side of the compressor
Data Source
AI summary
An air suspension system includes: an air suspension interposed between a vehicle body and an axle to adjust a vehicle height according to supply and exhaust of air; a compressor that compresses air; a tank that stores the air compressed by the compressor; and an air dryer provided on an ejection side of the compressor. When the tank has a predetermined pressure or less after air is supplied from the tank to the air suspension, a pressure of the tank is increased by the compressor.