Pressure-Sensitive Damper Modulating Compression Damping
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Solution Overview
Problem
Existing vehicle dampers lack the ability to automatically adjust damping forces in response to varying terrain and operational conditions, leading to suboptimal suspension performance, especially for lightweight vehicles where rider weight and style significantly influence suspension dynamics.
Innovation Solution
A damper system that automatically modulates compression damping rates based on internally-generated or externally-generated pressures, using valving structures within a fixed partition member to restrict fluid flow and adjust damping forces, allowing for real-time tuning via external knobs or computer-regulated pressure control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional fixed-damping dampers are used, then the structure is simple and reliable, but the damping forces cannot be adjusted to match varying terrain and operational conditions
Solution Approach 1:
The patent implements dynamic damping adjustment by making the damping characteristics variable rather than fixed. The valving structures are designed to automatically modulate damping forces in response to changing operating conditions, allowing the damper to adapt its behavior dynamically during vehicle operation.
Solution Approach 2:
The invention changes the damping parameter from a fixed value to a variable one that responds to pressure changes. By incorporating pressure-sensitive valving structures, the damping force becomes a function of the instantaneous pressure in the damper, enabling continuous adjustment of damping characteristics without requiring complex external control systems.
2Adaptability or versatility
If pressure-sensitive valving structures are added to enable automatic damping modulation, then adaptability improves, but the device complexity increases
Solution Approach 1:
The valving structures are designed to automatically respond to pressure changes within the damper system without requiring external control inputs. The damping modulation is self-regulating, where the valve openings and closings are driven directly by the pressure differential across them, eliminating the need for separate sensors, actuators, or control electronics.
Solution Approach 2:
The invention utilizes the hydraulic fluid already present in the damper system to provide the pressure-sensitive actuation mechanism. The damping forces are modulated through hydraulic pressure changes that directly influence the valving structures, leveraging the existing hydraulic medium rather than requiring additional pneumatic or electronic control systems.
3Adaptability or versatility
If external pressure control systems are implemented for tuning, then damping characteristics can be optimized for different conditions, but the ease of operation decreases
Solution Approach 1:
The patent replaces complex mechanical tuning mechanisms with a simpler pressure-based control approach. Instead of requiring physical adjustment of multiple valves or mechanical components, the system uses pressure regulation to achieve damping modulation, which can be controlled more easily through external pressure sources or simpler mechanical means.
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 continuous adjustment of damping characteristics to match changing terrain conditions, improving suspension performance by optimizing damping forces in real-time, enhancing ride quality and handling for both the rider and vehicle.
Implementation Method 1
a compression damping rate that is modulated in accordance with an internally-generated pressure
Implementation Method 2
valving structures directly adjoining, or within, a fixed partition member... restrict fluid flow in one direction through the fixed partition member
Data Source
AI summary
A damper includes a piston rod, a damping piston, at least one cylinder containing a damping liquid, a fixed partition member for partitioning the interior of the damper into two liquid chambers, a pressure source, and a valve in communication with the pressure source which reacts as a function of the pressure. The valve can also be in communication with additional forces, such as mechanical spring forces, which can be adjustable. The valve can include a pressure intensifier. The valve generates fluid flow resistance during flow of liquid in a first direction through the partition member. The fluid flow resistance in the first direction varies according to the amount of force communicated to the valve by the pressure source and any additional forces. The partition member can include means for providing low-resistance return flow of liquid in a second direction.