Modular Engine Mount With Exchangeable Throttle Element

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Solution Overview

Problem

Existing mounting devices for internal combustion engines on motor vehicles fail to optimally damp vibrations across different engines, leading to suboptimal damping characteristics, especially for high-frequency oscillations, and often result in noise due to pressure buildup in fluid damping chambers.

Innovation Solution

A modular mounting device with a fluid working chamber, fluid equalization chamber, and fluid damping chamber, where the throttling channel is formed by a separate, exchangeable throttle element that connects the fluid damping chamber to the external environment, allowing for adjustable damping characteristics and noise reduction through pressure equalization.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a fixed throttle is integrated into the housing, then the damping characteristics are stable, but the adaptability to different vibration behaviors is poor

Engineering Contradiction:

Improvedamping characteristics stabilityVSAvoidadaptability to different vibration behaviors

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The throttle is segmented from the housing and made as a separate, exchangeable component. This allows the throttle to be replaced depending on the specific vibration characteristics of different engines, providing adaptability while maintaining stable damping characteristics when a specific throttle is installed

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The system transitions from a static, fixed throttle configuration to a dynamic, adjustable configuration where the throttle can be exchanged to match different vibration behaviors of various engines

Inventive Principle:

Principle #15Dynamics

2Device complexity

If the throttling channel is integrated into the housing, then the device structure is simple, but the ease of adjustment is poor

Engineering Contradiction:

Improvedevice structure simplicityVSAvoidease of adjustment

Core Design Contradiction:

Device complexityVSEase of operation

Solution Approach 1:

The throttling channel is segmented from the housing structure and implemented as a separate throttle component that can be easily exchanged, maintaining overall structural simplicity while enabling easy adjustment of damping characteristics

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The throttle is designed as a replaceable component that can be discarded and replaced with a different throttle when adjustment is needed, rather than modifying the integrated housing structure

Inventive Principle:

Principle #34Discarding and recovering

3Reliability

If the fluid damping chamber is completely sealed, then the pressure control is stable, but the noise from pressure buildup increases

Engineering Contradiction:

Improvepressure control stabilityVSAvoidnoise from pressure buildup

Core Design Contradiction:

ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The excess pressure is extracted from the fluid damping chamber through the throttling channel that connects to the external environment, allowing pressure equalization while maintaining stable pressure control through the throttle's flow resistance

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The pressure buildup that causes noise is converted into a controlled flow through the throttling channel, where the throttling action dissipates the pressure energy quietly and equalizes pressure between the damping chamber and external environment

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

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 modular system effectively dampens both low-frequency and high-frequency vibrations, ensuring optimal damping for various internal combustion engines while minimizing noise, and allows for easy adaptation to different vibration behaviors by using interchangeable throttling elements.

Implementation Method 1

a fluid damping chamber (13) which is separated from the fluid working chamber (2) by means of an elastic membrane (12)

Methodology Applied

Scientific EffectElastic deformation: Elasticity

Implementation Method 2

The throttling channel (23) is formed by a throttle element (25) which is separate from the housing (5) and which is exchangeable

Methodology Applied

Scientific EffectViscous damping: Viscous Damping

Implementation Method 3

the fluid working chamber (2) which is in fluidic communication via at least one fluid channel with a fluid equalization chamber (3)

Methodology Applied

Scientific EffectPressure equalization: Pascal's Law

Data Source

PatentUS10451140B2Damping support device

Publication Date: 2019.10.22 AUDI AG

AI summary

A mounting device, in particular to the mounting of an internal combustion engine on a chassis of a motor vehicle, which is provided with a fluid working chamber that is fluidically connected via at least one fluid channel to a fluid equalization chamber via at least one fluid channel in a housing. At the same time, a fluid damping chamber is provided, which is separated by an elastic membrane from the fluid working chamber and which is connected with fluidic connection via a throttling channel to an outer environment of the mounting device. The throttling channel is formed by a replaceable throttling element separately from the housing.