Engine Mount Damper Integration for Vibration Control
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Solution Overview
Problem
Inverse type engine mounts suffer from resonance-induced vibration and noise due to low first natural frequency, leading to increased manufacturing costs and weight when separate dynamic dampers are used, which also limits expandability and versatility.
Innovation Solution
An engine mount configuration where a damper is integrated at the lower side of the core or installed at the ends of the lower support bracket, eliminating the need for a separate dynamic damper, thereby reducing weight and manufacturing costs while enhancing vibration attenuation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a separate dynamic damper is attached to the inverse type engine mount to reduce vibration and noise, then vibration attenuation performance is improved, but manufacturing cost increases
Solution Approach 1:
The patent combines the damper function with the engine mount structure by integrating a damper chamber within the mount body that contains a damper fluid. This merging eliminates the need for a separate dynamic damper component, thereby reducing manufacturing cost while maintaining vibration attenuation performance through the integrated damper system.
Solution Approach 2:
The engine mount structure is designed to serve multiple functions: it provides mechanical mounting support and simultaneously incorporates a damper chamber that delivers vibration attenuation. This multi-functionality eliminates the need for separate dedicated damping components, reducing overall manufacturing cost while achieving the required vibration control.
2Reliability
If a separate dynamic damper is attached to the inverse type engine mount to reduce vibration and noise, then vibration attenuation performance is improved, but the weight of the engine mount increases
Solution Approach 1:
The damper function is merged into the existing engine mount structure through an integrated damper chamber, eliminating the need for a separate dynamic damper. This integration avoids the additional weight that would result from attaching a separate damper component, while still achieving effective vibration attenuation through the damper fluid within the integrated chamber.
3Reliability
If a separate dynamic damper is attached to the inverse type engine mount to reduce vibration and noise, then vibration attenuation performance is improved, but device complexity increases
Solution Approach 1:
The patent merges the damper functionality into the engine mount structure by creating an integrated damper chamber within the mount body. This integration reduces device complexity by eliminating the need for separate dynamic damper components, mounting hardware, and associated packaging, while maintaining vibration attenuation performance through the unified structure.
Solution Approach 2:
The engine mount is designed as a multi-functional component that simultaneously provides mechanical support and vibration attenuation through an integrated damper chamber. This universality reduces overall system complexity by combining functions that would otherwise require separate components, simplifying the overall device structure.
4Reliability
If a separate dynamic damper is attached to the inverse type engine mount to reduce vibration and noise, then vibration attenuation performance is improved, but adaptability to different vehicle bodies deteriorates
Solution Approach 1:
The integrated damper chamber is incorporated directly into the engine mount structure, creating a universal design that can be adapted to different vehicle bodies and engine configurations. This integration eliminates the need for separate dynamic damper components and their associated packaging, thereby improving adaptability and versatility while maintaining vibration attenuation performance.
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
This configuration effectively reduces vibration and noise at the first natural frequency, improves fuel economy by minimizing weight, and enhances adaptability to various vehicle bodies and engine structures without the need for additional packaging.
Implementation Method 1
a damper for attenuating vibration may be installed at a lower side of a core of the engine mount
Data Source
AI summary
An engine mount which connects an engine to a vehicle body is provided. The engine mount includes a housing which defines a body of the engine mount and a main rubber body that is installed within the housing and defines a space portion that accommodates a fluid that flows through a nozzle plate. A core is inserted into and fixed to the main rubber body and an a fixing bolt is coupled to the core. A lower support bracket is coupled to the vehicle body and the fixing bolt is inserted therein. A damper that attenuates vibration is disposed at a lower side of the core or at first and second ends of the lower support bracket of the of the engine mount.