Vehicle Muffler Bracket Design for Rubber Damper Heat Reduction
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Solution Overview
Problem
The existing vehicle designs face challenges in suppressing the increase in temperature of the rubber damper due to heat from the muffler, which limits the material selection options for the damper.
Innovation Solution
A supporting unit with a first and second bracket configuration that expands the heat transfer path from the muffler to the rubber damper, utilizing multiple sub-attachments arranged to maximize the distance and direction of heat transfer, thereby reducing heat conduction to the rubber damper.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a direct supporting unit connects the muffler to the vehicle frame, then the structure is simple and easy to manufacture, but the heat from the muffler directly transfers to the rubber damper causing temperature increase
Solution Approach 1:
The supporting unit is divided into multiple segments: first bracket, second bracket, first attachment, and second attachment. This segmentation creates a longer heat transfer path between the muffler and rubber damper, reducing thermal conduction while maintaining structural integrity and ease of assembly.
Solution Approach 2:
The first and second brackets act as intermediary elements between the muffler and the rubber damper. These metal brackets extend the heat transfer path, serving as thermal mediators that reduce the direct thermal coupling between the hot muffler and the temperature-sensitive rubber damper.
2Loss of energy
If the heat transfer path from muffler to rubber damper is short, then heat transfer efficiency is high, but the rubber damper temperature increases excessively
Solution Approach 1:
The support structure is segmented into multiple components (first bracket, second bracket, attachments) that collectively form an extended heat transfer path. This segmentation increases the distance heat must travel from the muffler to the rubber damper, reducing thermal energy transfer while maintaining structural support functionality.
3Device complexity
If a single bracket supports the muffler, then the device complexity is low, but the heat transfer path is insufficiently expanded
Solution Approach 1:
The supporting unit is segmented into a first bracket with a first attachment and a second bracket with a second attachment. This segmentation creates multiple thermal pathways and extends the heat transfer distance, effectively reducing heat transfer to the rubber damper while adding only moderate structural complexity.
Solution Approach 2:
The first and second attachments are arranged in different spatial positions and orientations. This dimensional arrangement further extends the heat transfer path in multiple directions, maximizing thermal isolation of the rubber damper from the muffler heat source.
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 attenuates heat from the muffler to the rubber damper, allowing for the use of various types of materials and reducing the temperature increase, thus enhancing the freedom in material selection.
Implementation Method 1
The heat reaches the rubber damper via the supporting unit
Data Source
AI summary
The vehicle of the present application includes a vehicle frame; a muffler supported by the vehicle frame; and a supporting unit comprising a rubber damper, located between the muffler and the vehicle frame and, connected to the vehicle frame such that the muffler is suspended from the vehicle frame and supported by the vehicle frame. The supporting unit comprises a first bracket and a second bracket on the first bracket.