Cross-Flow Air Suspension Pressure Equalization
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Solution Overview
Problem
Existing air suspension systems in vehicles experience persistent pressure imbalances between air springs on opposite sides due to overcompensation by leveling valves, leading to an unlevel vehicle ride even after adjustments, and electronic-actuated valves fail to address these persistent differentials.
Innovation Solution
An air management system with independent pneumatic circuits and a cross-flow mechanism that establishes communication between the circuits only when both leveling valves are in a neutral mode, using mechanical or electronic actuators to adjust air pressure and equalize pressure differentials across 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 persistent pressure differentials occur between opposite sides
Solution Approach 1:
The patent combines the independent pneumatic circuits for each side of the vehicle into a unified system through cross-flow air lines that connect opposite sides. This allows the leveling valves to independently control each side while maintaining pressure equilibrium through the interconnected cross-flow pathways, resolving the contradiction between independent height control and pressure balance.
Solution Approach 2:
The system implements feedback control where leveling valves continuously monitor and adjust air pressure in response to vehicle height deviations. The cross-flow mechanism provides pressure equalization feedback between opposite sides, allowing the system to detect and correct pressure differentials that would otherwise persist after leveling adjustments.
2Reliability
If cross-flow mechanism establishes pneumatic communication between circuits, then pressure equalization is improved, but independent height adjustment capability is reduced
Solution Approach 1:
The cross-flow mechanism dynamically adjusts its pneumatic communication state based on system needs. During active leveling operations, the cross-flow paths remain closed to maintain independent circuit operation. When leveling is complete and pressure equalization is needed, the cross-flow paths open to equalize pressures, providing adaptive functionality that resolves the contradiction between equalization and independent adjustment.
Solution Approach 2:
The system employs periodic switching between independent operation mode and cross-flow equalization mode. The leveling valves operate independently during height adjustment phases, then periodically establish cross-flow communication to equalize pressures, creating a cyclical operation pattern that achieves both independent adjustment and pressure equalization.
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 system effectively mitigates pressure differentials between air springs, maintaining vehicle equilibrium and stability by equalizing air pressure across both sides, enhancing ride comfort and safety.
Implementation Method 1
a cross-flow mechanism connecting the first pneumatic circuit with the second pneumatic circuit... establish pneumatic communication between the first and second pneumatic circuits... equalize pressure differentials across the vehicle
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.