Multi-piece Muffler Housing with Locking Ring Seal
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Solution Overview
Problem
Motorcycle exhaust assemblies face challenges in maintaining a gas-tight system to comply with stringent emissions laws, as leaks can occur before exhaust gases pass through catalytic elements, and existing designs complicate access for catalyst replacement.
Innovation Solution
A multi-piece muffler housing system with a detachable baffle casing and catalytic element, where the baffle casing is releaseably coupled to the exhaust system using a locking ring, ensuring all exhaust gases pass through the catalytic element and allowing for simplified catalyst replacement without compromising the gas-tight integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of repair
If a multi-piece muffler housing with detachable baffle casing is used, then ease of catalyst replacement is improved, but gas-tight integrity may be compromised
Solution Approach 1:
The muffler housing is divided into separate components: a first casing containing the catalytic element and a second casing (baffle casing) containing baffles. These casings are detachably coupled together, allowing the baffle casing to be removed for catalyst access while maintaining gas-tight integrity through sealed joints with sealing surfaces and locking mechanisms.
2Strength
If a locking ring mechanism is used to secure casings, then sealing strength is improved, but device complexity increases
Solution Approach 1:
The locking ring is designed to be manually installed and removed by the user without requiring special tools or complex mechanisms. The locking ring features a simple circumferential groove that engages with protrusions on the casings, allowing users to secure or release the baffle casing through basic hand operations, thus maintaining ease of repair while providing strong sealing.
Data Source
AI summary
The present invention provides an exhaust system for use on a motorcycle having an internal combustion engine with at least one exhaust port, the exhaust system including a first tubular member having a first end removeably coupled to the exhaust port of the internal combustion engine, and a second end, opposite the first end, forming a first connector. Where the first tubular member also includes a catalytic element positioned within the first tubular member between the first end and the second end, and where the first tubular member is gas-tight such that all exhaust gas entering the first end must pass through the catalytic element before exiting the second end. The exhaust system also includes a second member removeably coupled to the first connector of the first member, the second member having one or more baffles positioned therein.