Air-Damped Engine Mount Filter Module Flow Resistance
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Solution Overview
Problem
Conventional air-damped engine mounts have insufficient vibration damping due to low flow resistance through the air hole, which limits their effectiveness in reducing engine vibrations.
Innovation Solution
An air-damped engine mount with a filter module installed between the main rubber and main pipe, featuring a filter body with an air channel, porous members, and filter blocks that increase flow resistance, regulating air pressure to enhance vibration damping.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a direct air hole is used for communication between the damping chamber and outside, then the structure is simple, but the flow resistance is insufficient leading to poor vibration damping
Solution Approach 1:
The patent introduces a filter module as an intermediary component between the damping chamber and the outside environment. This filter module includes a filter body with an air channel and porous members that mediate the air flow, providing both the necessary flow resistance for vibration damping and filtration functionality, while maintaining relative structural simplicity.
Solution Approach 2:
The patent employs porous members within the filter module to create controlled flow resistance. The porous structure allows air to pass through while generating sufficient resistance to dampen vibrations effectively, resolving the contradiction between simple structure and effective damping.
2Reliability
If a filter module with winding air passage is installed, then the flow resistance increases improving vibration damping, but the device complexity increases
Solution Approach 1:
The filter module is segmented into distinct functional components: a filter body containing the air channel, porous members for flow resistance, and filter blocks. This segmentation allows each component to perform its specific function efficiently while keeping the overall design manageable and not excessively complex.
Solution Approach 2:
The filter module serves multiple functions simultaneously: it provides flow resistance for vibration damping, filters impurities from the air, and maintains structural integrity. This multi-functionality justifies the added complexity by delivering multiple benefits from a single integrated component.
3Reliability
If porous members are added to increase flow resistance, then vibration damping improves, but manufacturing complexity increases
Solution Approach 1:
The patent incorporates porous members as a key element to achieve the desired flow resistance and damping efficiency. These porous materials can be manufactured using established techniques, balancing the need for effective damping with manufacturing feasibility.
Solution Approach 2:
The filter module combines different materials and structures (filter body, porous members, filter blocks) into a composite assembly. This composite approach allows each material to be optimized for its specific function while being manufactured using relatively simple processes, mitigating the increase in manufacturing complexity.
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 increased flow resistance through the filter module effectively reduces engine vibrations by gradually changing pressure inside the damping chamber, improving damping efficiency and preventing impurities from entering the chamber.
Implementation Method 1
the filter module designed to increase flow resistance against air entering and exiting the damping chamber therethrough
Implementation Method 2
the main rubber 20 increases the pressure inside the damping chamber 50 when deformed downwards by vibration in the engine, so that the air exits through the air hole 41
Implementation Method 3
the filter module includes a filter body (61) having at least an air channel (61a) to fluid-communicate with the damping chamber (50), and a filter housing (62) having one open side to receive the filter body (61) therein
Data Source
AI summary
An air-damped engine mount has a filter module installed in a damping chamber formed by coupling between a main rubber and a main pipe. The air-damped engine mount may include a bolt, a main rubber into which the bolt is fitted and coupled, a hollow main pipe coupled with the main rubber and supporting the main rubber, a cover plate coupled with the main pipe to form a damping chamber between the cover plate and the main rubber, and a filter module coupled with the cover plate and configured to permit air to communicate through the filter module against flow resistance with the damping chamber and the outside, wherein the flow resistance against the air passing through the filter module regulates air pressure inside the damping chamber to reduce vibration in the main rubber.