Compressed Air Supply System Dual Vent Line Design
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Solution Overview
Problem
Existing compressed air supply systems for vehicle air spring systems are inefficient in venting processes, leading to slow vehicle lowering and potential noise during venting, with a need for improved speed and noise reduction while allowing for quick ground clearance adjustments.
Innovation Solution
A compressed air supply system with a main pneumatic line and additional vent lines, featuring a 4/2-way vent valve and a 2/2-way valve, allowing for adjustable venting modes and larger flow cross-sections to enhance venting speed and minimize noise, including a two-stage compressor for rapid refilling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a conventional single vent line with a vent valve is used, then the system structure is simple, but the venting process is slow and vehicle lowering takes too long
Solution Approach 1:
The venting function is divided into two separate vent lines: a first vent line for normal venting operations and a second vent line for rapid venting. This segmentation allows the system to achieve fast venting when needed while maintaining structural simplicity during normal operations, resolving the contradiction between venting speed and device complexity.
Solution Approach 2:
The system dynamically switches between different venting modes by controlling the opening/closing of vent valves. The control unit can activate the second vent line with a larger flow cross-section for rapid vehicle lowering, and use the first vent line for normal operations, providing adaptive venting speed based on operational requirements.
2Speed
If a vent line with large flow cross-section is used for fast venting, then venting speed increases, but noise development becomes disturbing
Solution Approach 1:
The venting function is divided into two separate vent lines: a first vent line for normal venting operations and a second vent line for rapid venting. This segmentation allows the system to achieve fast venting when needed while maintaining structural simplicity during normal operations, resolving the contradiction between venting speed and device complexity.
Solution Approach 2:
The system dynamically switches between different venting modes by controlling the opening/closing of vent valves. The control unit can activate the second vent line with a larger flow cross-section for rapid vehicle lowering, and use the first vent line for normal operations, providing adaptive venting speed based on operational requirements.
3Loss of time
If the vent valve is opened quickly for rapid vehicle lowering, then ground clearance adjustment speed increases, but air pressure regulation precision decreases
Solution Approach 1:
The venting function is divided into two separate vent lines: a first vent line for normal venting operations and a second vent line for rapid venting. This segmentation allows the system to achieve fast venting when needed while maintaining structural simplicity during normal operations, resolving the contradiction between venting speed and device complexity.
Solution Approach 2:
The system dynamically switches between different venting modes by controlling the opening/closing of vent valves. The control unit can activate the second vent line with a larger flow cross-section for rapid vehicle lowering, and use the first vent line for normal operations, providing adaptive venting speed based on operational requirements.
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
Enables faster and quieter venting, allowing for quick ground clearance adjustments and rapid vehicle lowering, with the ability to regulate air pressure effectively, reducing the need for additional components and space.
Implementation Method 1
a first pneumatic line 60 between the compressed air supply 1 and the compressed air connection 2, which has an air dryer 61
Implementation Method 2
a first vent line 70 between the main pneumatic line 60 and a vent connection 3, which has a first, pneumatic 4/2-Way vent valve 73
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The invention relates to a compressed air supply system (10) for operating a pneumatics system (90), in particular an air suspension system of a motor vehicle, having: a compressed air supply line (1), a compressed air connection (2) to the pneumatics system (90), and at least one ventilation connection (3) to the environment, and a pneumatics main line (60) between the compressed air supply line (1) and the compressed air connection (2), which has an air dryer (61) and a main line valve (63) and a regeneration throttle (62); a first ventilation line (70) between the pneumatics main line (60) and a ventilation connection (3), which has a first ventilation valve (73) and a ventilation throttle (72); a second ventilation line (70') between the compressed air connection (2) and a ventilation connection (3), which has an additional second ventilation valve (73'), which is designed as a 2/2-way valve and wherein the compressed air supply system (10) is designed to provide at least one operating mode in which the second ventilation valve (73') is opened over a predetermined time period of a ventilation process.