Pressure-Balanced Poppet Valve for Hydro Lock and Damping Stability
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Solution Overview
Problem
Conventional damping components in vehicles and bicycles suffer from issues such as overshoot, oscillation, and complexity, leading to harsh riding experiences due to uncontrolled fluid flow and premature valve closures.
Innovation Solution
The implementation of a two-stage hydraulic boost valve, sliding spool valve, and pressure balanced poppet valve designs that control fluid flow by varying damping rates and preventing hydro locking, using shims, springs, and pressure feedback mechanisms to stabilize valve positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional damping components are used, then the structure is simple, but the damping rate cannot be varied and causes harsh riding experiences
Solution Approach 1:
The valve system transitions from static to dynamic operation through the poppet's movement between closed and open states. The poppet responds dynamically to pressure differential changes, automatically adjusting the damping rate based on real-time fluid flow conditions without requiring complex external control mechanisms.
Solution Approach 2:
The system incorporates inherent feedback through the pressure differential across the poppet. The pressure difference between the first and second chambers directly influences poppet position, which in turn controls fluid flow and damping rate, creating a self-regulating feedback loop that adapts to varying ride conditions.
2Reliability
If conventional poppet valves are used, then the structure is simple, but they suffer from overshoot and oscillation due to uncontrolled fluid flow
Solution Approach 1:
The pressure differential feedback mechanism continuously monitors the pressure difference between chambers and automatically adjusts poppet position. When pressure differential increases, the poppet opens to release pressure; when it decreases, the poppet closes to build pressure, creating a self-correcting system that prevents overshoot and oscillation.
Solution Approach 2:
The valve system is self-regulating through the inherent pressure differential across the poppet. The system uses its own operating conditions (pressure difference) to control its state (poppet position), eliminating the need for external control mechanisms and reducing overall system complexity while improving reliability.
3Reliability
If conventional poppet valves are used, then manufacturing is simple, but they experience premature closure due to hydro locking
Solution Approach 1:
The pressure balancing mechanism acts as a counterforce to the hydro locking effect. By equalizing pressures on both sides of the poppet through controlled fluid pathways, the system counteracts the pressure differential that causes premature closure, ensuring the poppet remains open until the appropriate closure condition is met.
Solution Approach 2:
The pressure balancing mechanism serves as an intermediary between the fluid pressure system and the poppet valve. It mediates the pressure forces acting on the poppet, preventing direct hydro locking effects from causing premature closure while maintaining smooth and accurate valve response.
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
These designs provide a smoother ride by filtering high-frequency vibrations and reducing unexpected responses, simplifying manufacturing, and reducing costs by eliminating complex components like O-rings and tolerancing.
Implementation Method 1
a biasing spring configured to bias the poppet to a closed position
Implementation Method 2
a pressure differential across the poppet is generated that overcomes the force of the biasing spring
Data Source
AI summary
Described herein is a pressure balanced valve comprising: an armature, wherein the armature has an inlet channel, at least one aperture, and a pressure feedback pin disposed within a hollow interior of the armature, a poppet slidably disposed within the hollow interior and around the pressure feedback pin to enable fluid communication between the pressure feedback pin and the poppet, the poppet and the pressure feedback pin cooperatively comprising the pressure balanced valve, wherein the poppet has at least one channel therethrough, and a biasing spring fit to bias the poppet towards closing the inlet channel.