Vehicle Air Filter Element With Nested Resonator
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Solution Overview
Problem
Existing air filter systems in vehicles, particularly in heavy-duty trucks, face challenges in reducing noise propagation from intake valves without increasing bulkiness or compromising air cleaning efficiency, as traditional resonator designs either add bulk or require a reduction in filtering area.
Innovation Solution
A filter element design that encircles a resonator with a circumferential filtering wall, allowing air to pass around it, maintaining size and efficiency while providing sound attenuation, with the resonator either formed in one piece with the filter element or detachable for reuse, and featuring a wave-shaped top edge for improved aerodynamics and noise reduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a resonator is added to the air filter system to reduce noise propagation, then sound attenuation is improved, but the device becomes more bulky
Solution Approach 1:
The resonator is positioned inside the air filter housing, nested within the existing filter element structure. This allows the resonator to be accommodated without increasing the external dimensions of the filter assembly, effectively placing one functional component inside another to resolve the space conflict between noise reduction and compactness
2Object-affected harmful factors
If the resonator is positioned to reduce noise, then sound attenuation is improved, but the effective filter area is reduced
Solution Approach 1:
The resonator is positioned specifically in the central region of the filter element, leaving the peripheral filtering areas intact and functional. This localized placement allows different regions of the filter to serve different purposes - the central resonator for noise attenuation and the surrounding areas for air filtration - thereby maintaining overall filtering effectiveness while achieving sound reduction
3Object-affected harmful factors
If a traditional resonator design is used for noise reduction, then sound attenuation is improved, but the device complexity increases
Solution Approach 1:
The resonator is integrated into the existing filter element structure rather than being added as a separate external component. The resonator shares the same housing and mounting infrastructure as the filter, combining noise reduction functionality with the existing filtration system and thereby reducing overall device complexity compared to separate resonator assemblies
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 design effectively attenuates noise without adding bulk or reducing air cleaning efficiency, allowing for seamless replacement of existing filters and providing enhanced sound attenuation across a broader bandwidth.
Implementation Method 1
a resonator, wherein the entire resonator is encircled by the circumferential filtering wall such that air entering through the circumferential filtering wall passes on the outside of the resonator to and through the open second end
Data Source
AI summary
The invention relates to a filter element for mounting in an air cleaner housing of a vehicle. The filter element comprises a circumferential filtering wall through which air is allowed to enter. The filter element also comprises a first end and an open second end for fluidly connecting the filter element to a turbo. The open second end is located opposite the first end. The circumferential filtering wall extends from the first end towards the open second end. The filter element further comprises a resonator. The entire resonator is encircled by the circumferential filtering wall such that air entering through the circumferential filtering wall passes on the outside of the resonator to and through the open second end.