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Air filter with acoustic insulation

An air filter, sound insulation technology, applied in the direction of fuel air filter, intake muffler, fuel air intake, etc.

Active Publication Date: 2022-06-07
RENAULT SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] (2) Above a certain range of frequencies, when the thickness of the existing "sound absorber" increases, there is no longer any gain
[0021] The downside of this approach is that it means that the acoustic complex absorbs little of the external noise that reaches the air filter

Method used

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  • Air filter with acoustic insulation
  • Air filter with acoustic insulation

Examples

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Embodiment Construction

[0048] In the following description, the same reference numerals refer to parts with the same or similar functions.

[0049] In a known manner, a motor vehicle having a combustion engine assembly includes an air filter for removing unwanted particles from the intake air flow before it enters the engine. The air filter is usually arranged in the engine compartment of the vehicle in which the powertrain is arranged, which includes a combustion engine with the elements required for its operation, eg with a water pump. Typically, the undesired particles can be dust or insects, but in some cases it can also be grit that can seriously damage the engine.

[0050] like figure 1 As shown, the air filter 10 is generally a housing 11, preferably of plastics material, in which a filter cartridge (not shown) is housed, the housing including an upstream opening 12 connected to the air supply duct and a connection to the engine facing Downstream opening 13 of the intake circuit duct. The ...

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PUM

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Abstract

An air filter (10) for an engine assembly comprising a combustion engine arranged in an engine compartment, in particular for a power train of a motor vehicle, is disclosed, the filter (10) being fixed with the engine in the engine compartment , and the filter comprises a housing (11) having a vertical side wall (14) between an upper planar wall (15) and a lower planar wall (16), characterized in that the filter (10) An external acoustic insulating cover (30) is included, positioned around the casing (11) and facing the engine.

Description

technical field [0001] The invention relates to a combustion engine which is arranged in an engine compartment of a motor vehicle and is equipped with an air filter. [0002] The present invention more particularly relates to acoustic insulation of engines and air filters. Background technique [0003] In a known manner, a combustion engine for a motor vehicle comprises an intake circuit for directing fresh air at least towards the engine, more specifically into the combustion chamber, where the fresh air will be mixed and compression in order to be able to cause combustion. [0004] Fresh air is typically recovered from the front of the vehicle to be directed into an air filter that removes any impurities, such as dust, from the fresh air before it enters the engine. [0005] The intake circuit forms part of the powertrain or PWT with the engine, which is placed in the engine compartment, usually located at the front of the motor vehicle. The operation of the PWT generat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02M35/12F02M35/02F02M35/024F02M35/16F02M35/10
CPCF02M35/0202F02M35/0205F02M35/024F02M35/10334F02M35/1272F02M35/1277F02M35/161
Inventor J-Y·德马修桑
Owner RENAULT SA