Cross-Flow Air Suspension Pressure Equalization for Vehicle Leveling
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Solution Overview
Problem
Air suspension systems in vehicles experience persistent pressure imbalances due to dynamic weight shifts, leading to uneven leveling and ride quality issues, as existing mechanical and electronic leveling valves fail to account for pressure differentials after adjustments.
Innovation Solution
An enhanced pneumatic suspension system with two independent pneumatic circuits and a cross-flow mechanism that connects the circuits when both leveling valves are in a neutral mode, allowing for equalization of air pressure between sides of the vehicle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If leveling valves independently adjust air pressure to each side of the vehicle, then vehicle height control is improved, but pressure imbalance between sides persists
Solution Approach 1:
The patent merges the previously independent pneumatic circuits by introducing a cross-flow passage that connects both sides of the suspension system. This allows air to flow between left and right circuits, enabling pressure equalization while preserving the independent height control capability of each leveling valve.
Solution Approach 2:
The cross-flow passage acts as an intermediary element between the two independent pneumatic circuits. It mediates the pressure imbalance by allowing controlled air flow between sides, thereby eliminating pressure differentials without interfering with the primary height control function of the leveling valves.
2Reliability
If pneumatic communication is established between circuits to equalize pressure, then pressure balance is improved, but independent height adjustment capability is reduced
Solution Approach 1:
The system dynamically switches between two operational states: independent height adjustment mode (when leveling valves are active) and pressure equalization mode (when cross-flow is enabled). This dynamic behavior allows the system to adapt to different operational requirements without compromising either function.
Solution Approach 2:
The pneumatic system is segmented into independent circuits for height control and a separate cross-flow pathway for pressure equalization. This segmentation allows each function to operate independently when needed, while still enabling coordination between circuits through the cross-flow mechanism.
3Device complexity
If common air lines are used to connect air springs, then system complexity is reduced, but pressure differential control is lost
Solution Approach 1:
The system segments the pneumatic network into separate left and right circuits that connect to the air supply tank independently, rather than using common air lines. This segmentation preserves pressure differential control capability while maintaining relatively simple system architecture.
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 effectively mitigates pressure imbalances and maintains vehicle equilibrium, enhancing ride stability and comfort by ensuring equal air pressure across both sides of the vehicle.
Implementation Method 1
a cross-flow mechanism connecting the first pneumatic circuit to the second pneumatic circuit when both leveling valves are in a neutral mode
Data Source
AI summary
An air management system for a vehicle having a first pneumatic circuit and a second pneumatic circuit, in which the first and second pneumatic circuits are pneumatically connected in a neutral position via a cross-flow mechanism. The first pneumatic circuit is configured to independently adjust air pressure of a first side of the vehicle. The second pneumatic circuit is configured to independently adjust air pressure of a second side of the vehicle. The system is configured to establish pneumatic communication between the first and second pneumatic circuits when the air management system is not independently adjusting the adjust air pressure of the first side of the vehicle and the air pressure of the second side of the vehicle in the cross-flow mode.