Silencing element

A technology of muffler element and shell, applied in the field of auto parts, can solve the problems of impossible to adjust the volume of muffler element, NVH performance influence, frequency band limitation of noise reduction effect, etc.

Active Publication Date: 2019-09-13
ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] An important factor affecting the NVH performance of the above components is the volume. However, the layout space of the air intake system will be determined at the beginning of the design, and even the mold has been opened, which makes it difficult or even impossible to adjust the elimination structure in the later stage of design. The volume of the acoustic element will limit the frequency band of its noise reduction effect, and the NVH performance will also be affected

Method used

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Embodiment Construction

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0032] It should be noted that if there is a directional indication (such as up, down, left, right, front, back...) in the embodiment of the present invention, the directional indication is only used to explain the position in a certain posture (as shown in the accompanying drawing). If the specific posture changes, the directional indication will also change accordingly.

[0033] In addition, if there are descriptions involving "first", "second" and ...

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Abstract

The invention discloses a silencing element. The element comprises a hollow shell, the shell is provided with an inlet, an inlet channel is formed on the inlet of the shell, a flow guide piece is arranged in the shell, at least part of the flow guide piece is located in the inlet channel, and arranged in the extension direction of the inlet channel, and therefore the inlet channel is spaced into multiple air inlet channels; a clamping piece opposite to the inlet is arranged in the inlet channel, and is connected with the flow guide piece, the clamping piece is provided with at least one opening, the opening corresponds to one air inlet channel, and therefore the air inlet channel and the interior of the shell communicate; and according to the technical scheme, the appearance size of the shell can be given according to the periphery arranging space, through the flow guide piece and the clamping piece with the opening, the interior of the shell is isolated into multiple resonant cavitiesand expansion cavities, in the design process, according to actual needs, the sizes of the flow guide piece and the clamping piece can be adjusted, and the needs of multi-frequency-segment noise reduction in the fixed-volume space can be met.

Description

technical field [0001] The invention relates to the technical field of auto parts, in particular to a sound-absorbing element. Background technique [0002] With the continuous improvement of living standards, people have higher and higher requirements for car sound quality, and more and more attention is paid to car NVH (Noise, Vibration, Harshness) performance. Intake noise is one of the main noise sources of cars, so the design Reasonable muffler element structure will effectively reduce the intake noise and improve the sound quality of the vehicle. The noise reduction components of the intake system are mainly expansion cavity, resonant cavity, quarter-wavelength tube, and high-frequency muffler. Single or multiple mufflers will be installed in the air intake system. In engineering applications, the design structure of the muffler will be adjusted according to the NVH test results later in the design stage. [0003] An important factor affecting the NVH performance of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M35/12F02M35/14
CPCF02M35/1211F02M35/1227F02M35/1233F02M35/1266F02M35/14
Inventor 汤海娟许志宝杨静刘东峰温敏杨德银吴全军张建伟
Owner ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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