Tunable Exhaust Insert Assembly for Adjustable Sound Pressure
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Solution Overview
Problem
Existing exhaust systems are inflexible and costly, requiring multiple components and fixed acoustic attenuation devices to achieve desired sound levels, which can be disruptive and are not easily customizable to user preferences or environmental considerations.
Innovation Solution
A tunable exhaust system with a tunable insert assembly that allows for adjustable parameters such as diameter and length of inserts, combined with orifice plates and register rings, to produce a range of sound pressure levels and frequencies without additional components or tools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If multiple resonators and complicated valves are utilized to achieve desired sound levels, then the acoustic attenuation performance is improved, but the device complexity and cost are substantially increased
Solution Approach 1:
The exhaust system is divided into modular components: a base exhaust system and a separate tunable insert assembly that can be independently configured and installed. The insert assembly itself is segmented into adjustable elements (baffles, resonators, restrictors) that can be individually positioned or removed to achieve different tuning characteristics without requiring multiple complete exhaust systems.
Solution Approach 2:
The tunable insert assembly serves multiple functions within a single device: it provides acoustic attenuation, flow restriction, and resonant frequency tuning capabilities all in one component that can be installed in various exhaust configurations. This universal design eliminates the need for multiple specialized components (multiple resonators, complicated valves) to achieve the same effects.
2Object-affected harmful factors
If mufflers with fixed baffles are installed during manufacturing, then the acoustic attenuation is achieved, but the adaptability for different sound preferences and locations is lost
Solution Approach 1:
The insert assembly transitions from static fixed baffles to dynamic adjustable elements. Users can modify the insert configuration by adding, removing, or repositioning components like baffles and resonators to change acoustic characteristics. This dynamic capability allows the same exhaust system to adapt to different sound preferences, environmental zones, and operational conditions throughout its lifecycle.
Solution Approach 2:
The system enables parameter changes in acoustic performance by allowing users to modify physical dimensions and configurations of the insert assembly. By changing parameters such as baffle positioning, resonator inclusion, and restrictor placement, users can tune the exhaust system to produce different sound pressure levels and frequency characteristics while maintaining acoustic attenuation functionality.
3Object-affected harmful factors
If aftermarket exhaust systems are installed to change sound characteristics, then the desired sound is achieved, but the cost and complexity of modifications increase
Solution Approach 1:
The invention extracts the tuning functionality from the entire exhaust system and isolates it into a separate, removable insert assembly. This allows users to obtain desired sound characteristics by simply installing or modifying the insert component rather than replacing entire exhaust sections or installing complicated valve systems, thereby reducing both cost and modification complexity.
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
Enables customizable sound tuning for vehicles, reducing noise disruption and cost by allowing easy adjustment of sound levels and frequencies without complex modifications to the exhaust system.
Implementation Method 1
tunable exhaust system with a tunable insert assembly which may be used to couple an inlet tube to an outlet tube, and which may be tuned to produce one or more desired sound levels
Data Source
AI summary
A tunable insert assembly for a tunable exhaust system is disclosed for use with an air intake engine of a vehicle. The tunable exhaust system may include an intake tube having first and second ends with a first flange, an exhaust tube having third and fourth ends with a second flange, and a clamp to securely affix the first flange of intake tube to the second flange of exhaust tube. The tunable insert assembly may comprise a register ring, insert, and orifice plate with an opening. The insert may be perpendicularly disposed through the opening of orifice plate, while the register ring may be disposed over and circumferentially surrounds an outermost surface of orifice plate. Lastly, the exhaust system may be configured to produce a desired range of tunable sound pressure levels and a desired tunable sound frequency range based on various predetermined diameters and lengths related to the insert(s).