Engine Mount Elastomeric Element V-Configuration
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Solution Overview
Problem
Existing engine mounts for vehicles lack an economical and efficient means to provide robust isolation and snubbing in all three orthogonal directions, leading to potential power train disconnection and increased vibration due to elastomer failure, which affects ride quality and performance.
Innovation Solution
The design incorporates an isolation mount with inner and outer members connected by individual elastomeric elements, each slidably mounted between metal plates, forming a V-configuration that compresses the elastomeric elements to provide improved stiffness and reduce vibration, allowing for modular configurations and simplified manufacturing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional engine mounts are used, then the structure is simple, but the isolation and snubbing performance in all three orthogonal directions is insufficient
Solution Approach 1:
The elastomeric member is divided into multiple independent elastomeric elements (first, second, third elements) positioned at different locations within the mount structure. Each element provides independent isolation and snubbing in specific directions, collectively achieving comprehensive three-dimensional protection while maintaining a modular, manageable structure.
Solution Approach 2:
Different elastomeric elements are positioned at specific locations within the mount to provide targeted isolation and snubbing properties in different directions. The first element provides snubbing in one direction, the second in another direction, and the third in a third direction, creating locally optimized performance throughout the structure.
2Reliability
If robust isolation mounts are designed to prevent power train disconnection, then the reliability improves, but the manufacturing complexity and cost increase
Solution Approach 1:
The mount is constructed from discrete, pre-manufactured elastomeric elements that can be independently produced and then assembled into the final mount structure. This segmentation allows each element to be optimized for its specific function while simplifying the overall manufacturing process through modular assembly.
Solution Approach 2:
Multiple elastomeric elements with different orientations and properties are combined within a single mount structure to achieve comprehensive isolation and snubbing performance. This merging of multiple functional elements into one integrated component provides robust protection against power train disconnection while maintaining manufacturing efficiency through standardized assembly procedures.
3Strength
If elastomeric elements are compressed between metal plates, then the stiffness and vibration reduction improve, but the manufacturing precision requirements increase
Solution Approach 1:
The compression mechanism is divided into multiple discrete elastomeric elements positioned between metal plates at specific locations. This segmentation allows for localized compression zones that can be independently controlled, reducing the overall precision requirements compared to a fully constrained system while still achieving the necessary stiffness and vibration reduction.
Solution Approach 2:
The elastomeric elements are designed with specific geometric parameters and material properties that allow them to provide the required stiffness and vibration resistance through controlled compression. By optimizing the parameters of individual elements (size, shape, material composition), the system achieves high performance with relaxed assembly tolerances.
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 solution enhances vehicle performance by providing effective isolation and snubbing in all directions, reducing the risk of power train disconnection and vibration, while allowing for various engine mount configurations with minimal rework and increased production efficiency.
Implementation Method 1
a first and a second individual elastomeric element compressed between and respective inner and outer plates
Implementation Method 2
elastomeric member sandwiched between an inner and an outer member of an isolation mount
Implementation Method 3
each individual elastomeric element is slidably mounted to its respective inner plate
Data Source
AI summary
An isolation mount for supporting and isolating one part from another includes an inner member formed to be connected to one of the parts and an outer member formed to be connected to one of the parts. The inner member has a first and a second inner plates being connected at one end and extending at a first angle with respect to each other; the outer member also has a first and a second outer plates being connected at one end and extending at a second angle with respect to each other. The isolation mount further includes a first and a second individual elastomeric element compressed between respective inner and outer plates.