Vehicle Exhauster Silencer Mounting Assembly Noise Reduction
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Solution Overview
Problem
The existing exhauster assemblies in vehicles allow noise from the rear wheel and exhaust system to enter the vehicle interior through the exhauster, increasing ambient noise levels due to their location and design.
Innovation Solution
A mounting assembly for an exhauster silencer that includes a mounting plate with exhauster and silencer mounting features, allowing the silencer to be coupled directly to the vehicle interior panel without modifying it, thereby reducing noise entry by using sound-absorbing materials and strategic mounting configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the exhauster is positioned proximate to the rear bumper and rear wheel to enable effective air exhaust, then the air exhaust function is improved, but noise from the rear wheel and exhaust system enters the vehicle interior through the exhauster, increasing ambient noise levels
Solution Approach 1:
A silencer is introduced as an intermediary component between the exhauster outlet and the vehicle interior. The silencer includes a housing with sound-absorbing material that blocks noise from the rear wheel and exhaust system while allowing the exhauster to maintain its effective position for air exhaust. The mounting assembly couples the silencer to the exhauster, creating a noise-blocking barrier without compromising the exhaust function.
Solution Approach 2:
The silencer housing is designed to enclose or surround the exhauster outlet, with the sound-absorbing material nested within the silencer housing. This nested configuration allows the silencer to effectively block noise from multiple directions (rear wheel and exhaust system) while maintaining a compact assembly that does not interfere with the air exhaust function.
2Object-affected harmful factors
If a silencer is added to block noise from entering the vehicle interior, then noise levels are reduced, but the device complexity and manufacturing cost increase
Solution Approach 1:
The mounting assembly serves multiple functions: it couples the exhauster to the vehicle interior panel, provides structural support for the silencer, and facilitates the connection between the silencer and exhauster. By integrating these functions into a single assembly, the overall device complexity is reduced despite adding the silencer component.
Solution Approach 2:
The mounting assembly merges the exhauster mounting function with the silencer mounting function into a single integrated component. This consolidation reduces the number of separate parts and assembly steps, offsetting the complexity increase from adding the silencer. The mounting assembly includes features that simultaneously secure both the exhauster and silencer to the vehicle interior panel.
3Object-affected harmful factors
If the silencer is coupled directly to the vehicle interior panel, then noise blocking is improved, but modifications to the vehicle panel are required, increasing installation complexity and cost
Solution Approach 1:
The silencer and exhauster assembly is extracted from the vehicle interior panel, meaning it is not permanently attached to or modified into the panel itself. Instead, the mounting assembly provides a separate mounting structure that couples to the panel, preserving the panel's integrity and allowing for easier installation and removal without panel modifications.
Solution Approach 2:
The noise control system is segmented into separate components: the exhauster, the silencer, and the mounting assembly. This segmentation allows each component to be manufactured independently and assembled together, eliminating the need to modify the vehicle interior panel. The mounting assembly acts as an independent structure that bridges the gap between the panel and the noise control components.
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
The solution effectively reduces noise levels within the vehicle by blocking external soundwaves and redirecting airflow, minimizing the impact of rear wheel and exhaust system noise without requiring modifications to the vehicle panel, thus lowering costs.
Implementation Method 1
a silencer that partially encloses an outlet of the respective exhauster. The silencer is configured to block a substantial portion of soundwaves originating from a source external to the vehicle interior
Data Source
AI summary
A mounting assembly for a silencer of an exhauster assembly includes a mounting plate. The mounting plate has an opening configured to receive an exhauster of the exhauster assembly while the exhauster is coupled to a structure of a vehicle at least partially separately from the mounting plate. In addition, the mounting plate has a first side configured to face the structure of the vehicle and a second side configured to face the silencer. The mounting assembly also includes at least one exhauster mounting feature configured to couple the mounting plate to the exhauster. Furthermore, the mounting assembly includes a silencer mounting feature configured to couple the silencer to the mounting plate.