Hydraulically Damping Mount Plate-Shaped Decoupling Device
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Solution Overview
Problem
Hydraulically damping mounts with non-spherically shaped decoupling members are prone to tilting or tipping during operation, limiting operational safety and effectiveness in damping low-amplitude vibrations, and their design restricts the utilization of available space, leading to suboptimal resonance frequency tuning.
Innovation Solution
A hydraulically damping mount design featuring a plate-shaped decoupling device that always faces fluid flows during movement, maximizing the cross-sectional area utilization and minimizing the vibrating mass in the decoupling channel, thereby enhancing operational safety and tuning dynamic rigidity to higher frequencies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If non-spherically shaped decoupling members are used, then the mount can be manufactured with simpler geometry, but the decoupling device is prone to tilting or tipping during operation, reducing operational safety
Solution Approach 1:
The patent applies spherical geometry to the decoupling member, which eliminates tilting and tipping during operation due to its isotropic shape. This spherical design maintains operational safety while still allowing for practical manufacturing through precision machining or molding techniques.
2Reliability
If spherical decoupling members are used, then operational safety is improved, but the available construction space is not optimally utilized, limiting cross-sectional area maximization
Solution Approach 1:
The patent introduces an asymmetric plate-shaped decoupling device with a specific orientation (inflow sides facing fluid flows) that maximizes cross-sectional area utilization in the available construction space between the outer sleeve and cage, while the decoupling cage provides guidance to maintain operational reliability.
3Manufacturing precision
If the decoupling channel cross section is maximized and length minimized, then resonance frequency is improved, but the construction space is constrained by the guide cage and outer pipe geometry
Solution Approach 1:
The patent optimizes the decoupling channel by utilizing the longitudinal dimension between the outer sleeve and cage, creating a flat, extended channel geometry that maximizes cross-sectional area while minimizing effective length in the fluid flow direction, thereby achieving optimal resonance frequency characteristics within the constrained construction space.
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 solution ensures high operational safety and effective damping of vibrations up to 200 Hz, with the decoupling device being insensitive to tilting and allowing for adjustable resonance frequencies, improving the mount's dynamic behavior and space utilization.
Implementation Method 1
at least one torsion-resistant and plate-shaped decoupling device movable back and forth by fluid flows is disposed in the decoupling channel
Implementation Method 2
The mount core is supported by the outer tube via a mount spring of an elastomeric material
Implementation Method 3
Hydraulically damping mounts are used in engine vehicles to damp and to cancel occurring vibrations
Data Source
AI summary
A hydraulically damping mount includes amount core and an outer tube. In an embodiment, the mount core is supported on the outer tube via a mount spring of an elastomeric material, and the mount spring divides the space formed between the mount core and the outer tube into at least two fluid-filled chambers that are in fluid communication with each other via at least one damping channel and at least one decoupling channel. In an embodiment, at least one torsion-resistant decoupling device is movable back and forth by fluid flows and is arranged in the at least one decoupling channel. In an embodiment, the decoupling device is formed so that during a fluid induced movement of the decoupling device its inflow sides always face the fluid flows.