Damper Fluid Chamber Valve Layout for Adaptive Damping Control
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Solution Overview
Problem
Current vehicle dampers lack efficient mechanisms to continuously adjust damping levels based on road conditions and vehicle dynamics, limiting their ability to provide optimal vibration control across varying scenarios.
Innovation Solution
The damper design incorporates an inner and outer tube with a piston, featuring a passive intake valve and external active control valves that allow selective fluid flow between rebound and compression working chambers, controlled by an Electronic Control Unit (ECU) for dynamic damping adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If passive intake valve and external active control valves are added to enable continuous damping adjustment, then adaptability and vibration control performance are improved, but device complexity increases
Solution Approach 1:
The valve system is divided into a passive intake valve assembly and separate external active control valves. The passive intake valve handles basic fluid communication between chambers, while external active valves provide adjustable damping control. This segmentation allows each component to perform its specific function efficiently, reducing overall system complexity while maintaining adaptability.
Solution Approach 2:
The fluid chamber acts as an intermediary space between the rebound and compression working chambers, containing the passive intake valve. This intermediary structure enables controlled fluid exchange without requiring direct complex valve mechanisms in both chambers, simplifying the overall valve architecture while maintaining damping adjustability.
2Reliability
If multiple valve assemblies are positioned within the fluid chamber for selective fluid flow control, then vibration control performance is improved, but manufacturing complexity increases
Solution Approach 1:
The valve system is divided into a passive intake valve assembly and separate external active control valves. The passive intake valve handles basic fluid communication between chambers, while external active valves provide adjustable damping control. This segmentation allows each component to perform its specific function efficiently, reducing overall system complexity while maintaining adaptability.
Solution Approach 2:
The valve assemblies are designed with movable valve discs that can dynamically open and close passageways based on pressure differentials and control signals. This dynamic operation allows the valves to adapt to varying road conditions and vehicle dynamics, improving vibration control performance while maintaining a relatively simple structural design that is easier to manufacture.
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 design enables continuous adjustment of damping levels according to road conditions and vehicle dynamics, enhancing vibration control and ride comfort by allowing for greater flexibility in fluid flow management between the chambers.
Implementation Method 1
The first valve disc covers a first passageway to restrict flow therethrough in a first direction and allow flow in an opposite second direction
Implementation Method 2
The second valve disc covers a second passageway through the second valve ring to restrict flow therethrough in the second direction and allow flow in the first direction
Implementation Method 3
As the damper is compressed or extended, fluid flows between rebound and compression working chambers within the damper to counteract vibrations
Data Source
AI summary
A damper comprises an inner tube having a longitudinal axis with a piston slidably disposed in the inner tube. An outer tube surrounds the inner tube and defines a fluid chamber therebetween. A first valve assembly includes a first valve ring and a first valve disc fixed to the first valve ring. The first valve disc covers a first passageway to restrict flow therethrough in a first direction and allow flow in an opposite second direction. A second valve assembly includes a second valve ring and a second valve disc fixed to the second valve ring. The second valve disc covers a second passageway through the second valve ring to restrict flow therethrough in the second direction and allow flow in the first direction. The first valve assembly is axially spaced apart from the second valve assembly.