Muffler Unit Radial Exhaust Pipe Support
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Solution Overview
Problem
Vehicles with mufflers and exhaust pipes experience stress-induced distortion due to vibrations when traveling over rough terrain, particularly at the connection points between the muffler and exhaust pipe, requiring a robust structure to mitigate this issue.
Innovation Solution
A muffler unit design that supports the exhaust pipe at two radial positions using tubular main bodies with specific openings and supports, ensuring secure attachment and reducing distortion through balanced support and potential welding for reinforcement, while also optimizing exhaust gas flow and noise reduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the exhaust pipe is connected to the muffler at a single position, then the device complexity is reduced, but the connection experiences stress-induced distortion due to vibrations when traveling over rough terrain
Solution Approach 1:
The exhaust pipe is divided into multiple sections with the first exhaust pipe connected to the engine and the second exhaust pipe connected to the muffler. This segmentation allows for flexible arrangement and reduces stress concentration at any single connection point, resolving the contradiction between simple structure and connection stability.
Solution Approach 2:
The second exhaust pipe is inserted into the muffler body, creating a nested structure where the exhaust pipe is housed within the muffler. This nesting arrangement provides stable support and reduces vibration-induced distortion while maintaining a compact and simple overall structure.
2Volume of moving object
If the exhaust pipe is connected to the muffler in the radial direction, then the installation space is reduced, but the connection experiences stronger vibrations when traveling over rough terrain
Solution Approach 1:
The second exhaust pipe is inserted into the muffler body in the radial direction, creating a nested structure that minimizes installation space while providing stable support. The exhaust pipe extends into the muffler's internal chamber, reducing the overall footprint of the exhaust system.
Solution Approach 2:
The exhaust pipe connection utilizes the internal three-dimensional space of the muffler by extending radially inward and inserting into the muffler body. This dimensional utilization allows for compact arrangement while distributing vibration stresses through the three-dimensional nested structure.
3Reliability
If a robust structure is used to reduce distortion at the connection, then the connection stability is improved, but the device complexity increases
Solution Approach 1:
The nested structure of the second exhaust pipe inserted into the muffler body provides inherent stability and vibration resistance without requiring additional complex support structures. The nesting itself creates a robust connection through the interference fit and structural integration.
Solution Approach 2:
The connection structure merges the exhaust pipe and muffler into an integrated assembly where the second exhaust pipe becomes part of the muffler's internal structure. This merging eliminates the need for separate complex mounting brackets or reinforcement structures.
Data Source
AI summary
A muffler unit configured to be attached to a vehicle includes a first exhaust pipe. The muffler unit includes a muffler and a second exhaust pipe. The muffler includes a first main body preferably having a tubular shape and including a first support with a first opening and a second support with a second opening, and a first lid. The first and second openings are oriented in a radial direction of the first main body. The second exhaust pipe includes a second main body, a second lid covering a right end of the second main body, and an exhaust inlet disposed in a left end of the second main body. The second exhaust pipe extends into the first and second openings and is supported by the first and second supports. The second main body includes a communication port in communication with an inner space of the first main body.