Cross-Linked Shock Absorber Roll Control With Shared Hydraulic Fluid
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Solution Overview
Problem
Existing roll control systems in vehicles lack efficiency and functionality due to separate damping fluids and lack of integration in cross-linked systems.
Innovation Solution
An integrated roll control system is introduced, where shock absorbers are coupled in a cross-linked configuration, allowing equal hydraulic fluid volume exchange between compression and rebound chambers to manage roll control pressure effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional cross-linked systems with separate damping fluids are used, then roll control functionality is provided, but system complexity increases and functionality is limited
Solution Approach 1:
The patent combines the damping fluid and roll control fluid into a single integrated hydraulic system. The shock absorber uses the same hydraulic fluid for both damping operations and roll control circuit operations, eliminating the need for separate fluid systems and reducing overall system complexity while maintaining full functionality
Solution Approach 2:
The hydraulic fluid serves multiple functions simultaneously: it provides damping control in the compression and rebound chambers while also serving as the roll control circuit fluid in the cross-linked system. This multi-functional approach eliminates the need for separate systems and reduces component count
2Reliability
If compression of first shock absorber and rebound of second shock absorber occur simultaneously, then pressure builds in roll circuit to prevent roll, but unnecessary pressure buildup occurs when roll control is not required
Solution Approach 1:
The cross-linked hydraulic configuration creates a natural feedback mechanism where the system automatically responds to actual roll conditions. When both shock absorbers compress or rebound equally (no roll), fluid volumes balance and no pressure builds. When roll occurs, imbalance in fluid volumes creates pressure only in the direction needed to counteract the roll, providing conditional pressure control
Solution Approach 2:
The system dynamically adjusts pressure based on actual roll conditions through the cross-linked hydraulic configuration. The pressure in the roll control circuit is not static but varies automatically with the relative positions and movements of the shock absorbers, providing pressure only when and where needed
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 provides enhanced roll control by equalizing hydraulic fluid volume exchange, improving stability and reducing unnecessary pressure buildup, thereby enhancing vehicle handling and safety.
Implementation Method 1
compression of the first shock absorber pushes a volume of hydraulic fluid into the second accumulator coupled to the second rebound chamber of the second shock absorber increasing pressure in the second accumulator
Implementation Method 2
a roll control circuit comprising a first accumulator and a second accumulator, wherein: the first shock absorber and the second shock absorber are coupled to the roll control circuit in a cross-linked configuration with the first accumulator coupled between a compression side of the second shock absorber and the first rebound chamber of the first shock absorber
Implementation Method 3
An integrated roll control system is introduced, where shock absorbers are coupled in a cross-linked configuration, allowing equal hydraulic fluid volume exchange between compression and rebound chambers to manage roll control pressure effectively
Data Source
AI summary
A shock absorber used with an integrated roll control system is provided. Embodiments include a first shock absorber having a first main piston and a first rebound chamber. Embodiments include a second shock absorber having a second main piston; and a second rebound chamber. Embodiments further include a roll control circuit, wherein the first shock absorber and the second shock absorber are coupled to the roll control circuit in a cross-linked configuration. Compression of the first main piston of the first shock absorber pushes a volume of hydraulic fluid into the roll control circuit and increasing pressure in the roll control circuit. Rebound movement of the second main piston is damped in response to the increased pressure provided by the hydraulic fluid entering the roll circuit and coupled to the second rebound chamber.