Vehicle Intake Speaker Assembly With Filtered Side Mounting
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Solution Overview
Problem
Conventional active noise control systems for vehicle intake systems face issues with speaker interference and contamination due to their installation at the inlet portion of the intake duct, leading to performance degradation and potential breakdowns.
Innovation Solution
A detachable speaker assembly with a filter is designed to be installed at a specific location on the intake system, using an adapter to accommodate various speaker sizes and prevent foreign material penetration, maintaining the intake duct's inner diameter and ensuring a clean air cleaner environment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the speaker is installed at the inlet portion of the intake duct, then the noise attenuation function can be achieved, but the structure becomes large and causes interference with neighboring components
Solution Approach 1:
The speaker is relocated from the inlet portion to the side surface of the intake duct, changing the spatial dimension of installation. This allows the speaker to be positioned in a different spatial plane that does not interfere with neighboring components while still achieving effective noise attenuation through the duct walls.
Solution Approach 2:
A speaker mounting bracket is introduced as an intermediary component to attach the speaker to the intake duct side surface. This bracket serves as a mediator that connects the speaker assembly to the duct structure without requiring modification of the inlet portion, thus avoiding interference with neighboring components.
2Reliability
If the speaker is installed at the inlet portion of the intake duct, then the noise attenuation function can be achieved, but dust, water, snow or other foreign materials are introduced into the inlet portion, leading to contamination and corrosion of the speaker
Solution Approach 1:
The speaker is extracted from the inlet portion environment and relocated to the side surface of the intake duct. This removes the speaker from the harmful environment where dust, water, and snow are introduced, thereby preventing contamination and corrosion while maintaining the noise attenuation function through acoustic transmission through the duct walls.
Solution Approach 2:
The intake duct walls serve as an intermediary barrier between the external environment (dust, water, snow) and the speaker. By positioning the speaker on the side surface rather than at the inlet, the duct structure itself becomes a protective mediator that prevents foreign materials from reaching the speaker while still allowing acoustic waves to pass through for noise attenuation.
3Object-affected harmful factors
If a filter is installed to block foreign materials, then the speaker is protected from contamination, but the filter may affect the intake air flow
Solution Approach 1:
The filter is extracted from the main intake air path and relocated to the speaker assembly area. This positioning allows the filter to protect the speaker from contamination through acoustic holes without blocking the main intake air flow, as the filtered air is only needed for the speaker's acoustic function rather than engine intake.
Solution Approach 2:
The intake system is segmented into two separate functions: the main intake duct for engine air supply and the speaker assembly with its own filter for acoustic purposes. This segmentation allows each component to be optimized independently - the main duct maintains high flow capacity while the speaker filter provides protection without significantly impacting overall intake performance.
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 solution allows for effective noise attenuation and tuning while preventing contamination and corrosion, enabling the use of different speaker sizes and specifications, and improving engine output by maintaining the intake pressure.
Implementation Method 1
a filter for blocking the foreign materials is mounted before installation of the speaker assembly
Implementation Method 2
the controlled sound-source is transferred from the amplifier to the speaker and at the same time the controlled sound-source is outputted from the speaker into the intake system
Implementation Method 3
controls attenuation of the noises outputted from the engine and simultaneously embodies a sound quality having particular characteristics using an anti-noise with a reverse phase
Implementation Method 4
a detachable speaker assembly with a filter is designed to be installed at a specific location on the intake system, using an adapter to accommodate various speaker sizes
Data Source
AI summary
An active noise control apparatus for an intake system of a vehicle may include a filter mounted on a portion of the intake system for blocking foreign materials; and a speaker assembly detachably installed at the portion to which the filter is mounted.