Fluid-Enclosed Engine Mount Orifice Module Vertical Movement
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Solution Overview
Problem
Conventional fluid-enclosed engine mounts generate noise due to membrane vibration and pressure fluctuations, limiting their insulation performance in the high-frequency band.
Innovation Solution
A dual insulation structure is implemented, featuring a support member and pipe member that allow the orifice module to be vertically movable, reducing noise by attenuating pressure fluctuations and enhancing vibration insulation across various frequency bands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If the membrane is constrained to the orifice module to prevent noise, then noise generation is reduced, but the insulation rate in the high-frequency band cannot be increased
Solution Approach 1:
The patent removes the membrane component from the orifice module, extracting the source of noise generation. By eliminating the membrane that caused vibration and collision noise, the system achieves noise reduction while maintaining insulation performance through the fluid-filled chambers and orifice structure alone
Solution Approach 2:
The patent introduces a fluid medium as an intermediary between the upper and lower chambers, replacing the membrane's function of separating chambers while allowing controlled fluid flow through the orifice. This fluid intermediary enables vibration insulation without the noise-generating membrane vibrations
2Ease of operation
If the membrane moves smoothly to allow fluid flow, then fluid passage is improved, but vibration of the membrane generates noise
Solution Approach 1:
The patent extracts the membrane component that caused the contradiction between smooth fluid passage and noise generation. By removing the membrane, fluid can flow freely through the orifice without causing membrane vibrations, eliminating the noise source while maintaining fluid passage functionality
Solution Approach 2:
The patent uses hydraulic principles by filling the chambers with fluid that flows through the orifice module. The fluid pressure and flow dynamics provide the necessary insulation and movement control without mechanical membranes, resolving the contradiction between smooth operation and noise generation
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 dual insulation structure effectively reduces operational noise and improves vibration insulation across a wide frequency range by allowing smooth vertical movement of the orifice module, thereby enhancing the engine mount's noise reduction capabilities.
Implementation Method 1
a support member mounted between an external surface of the orifice module and the lower side portion of the insulator to elastically support the orifice module to be vertically movable
Implementation Method 2
Fluid absorbs a vibration of the engine while passing through a flow path between an upper chamber 72 and a lower chamber 73 disposed below the insulator 7
Implementation Method 3
an orifice module mounted at the inside of a lower side portion of the insulator to divide the internal space into an upper chamber and a lower chamber
Data Source
AI summary
A fluid-enclosed engine mount may include an insulator mounted between a core configured to be connected to an engine and an external pipe configured to be connected to a vehicle body, the insulator being provided with an internal space enclosing fluid; an orifice module disposed at the inside of a lower side portion of the insulator to divide the internal space into an upper chamber and a lower chamber, the orifice module being provided with a fluid passage for allowing fluid to fluidically-communicate between the upper chamber and the lower chamber; a support member disposed between an external surface of the orifice module and the lower side portion of the insulator to elastically support the orifice module to be vertically movable; and a pipe member disposed between the lower side portion of the insulator and the support member to support an external surface of the support member.