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Air-intake noise-reduction air filter for vehicle

An air filter and noise reduction technology, applied in the field of air filter, achieves obvious noise reduction effect and improved acoustic characteristics

Inactive Publication Date: 2009-07-29
CHONGQING LONCIN MOTOR
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

However, with the further stringent noise regulations, the original noise reduction measures can no longer meet the requirements, and the intake noise must be further reduced.

Method used

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  • Air-intake noise-reduction air filter for vehicle

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Embodiment Construction

[0010] Below in conjunction with accompanying drawing and embodiment the present invention will be further described:

[0011] As shown in Fig. 1 and Fig. 2, the vehicle intake noise reduction air filter according to the present invention has an air filter housing 1, a filter element 2, an intake pipe 3 and an air outlet pipe 4, and the filter element 2 is assembled in the air filter housing 1 The inner chamber of the air filter is divided into the first chamber 5 and the second chamber 6, the air inlet pipe 3 communicates with the first chamber 5, the air outlet pipe 4 communicates with the second chamber 6, and the air inlet pipe 3 extends into the inner chamber of the air filter A resonant chamber 8 is connected to that section through the branch pipe 7, and an expansion chamber 9 for connecting with the carburetor is also connected on the outlet pipe 4.

[0012] After the resonant cavity 8 is added on the air intake pipe 3 in the inner cavity of the air filter, the resonan...

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PUM

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Abstract

An air inlet noise reduction air filter for a vehicle comprises an air filter shell (1), a filter core (2), an air inlet tube (3) and an air outlet tube (4), wherein the filter core (2) is assembled inside the air filter shell (1) to divide the inner cavity of the air filter into a first cavity and a second cavity, the air inlet tube (3) is communicated with the first cavity, the air outlet tube (4) is communicated with the second cavity, and a resonant chamber (8) is connected with the section of the air inlet tube (3) stretching into the inner cavity of the air filter by a branch tube (7). In the invention a resonant chamber is added on the section of the air inlet tube stretching into the inner cavity of the air filter, so that the acoustic characteristic of the air filter is improved, and the noise reduction effect is obvious with other conditions unchanged.

Description

technical field [0001] The present invention relates to an air filter, and in particular to an air filter capable of reducing intake noise of a vehicle. Background technique [0002] With the enhancement of people's awareness of environmental protection and the continuous increase of vehicle ownership, more and more attention has been paid to the impact of vehicle noise on life. Pass-through noise is an important indicator for evaluating vehicle noise. Noise limits are more strictly regulated. The noise source of the pass-by noise is more complicated, and the intake noise is an important sound source of the vehicle pass-by noise, especially the intake system as the channel of the intake noise has an important influence on the characteristics of the intake noise. [0003] At present, in order to reduce the noise of the engine intake system, the method adopted is mainly to install a single resonant cavity on the intake pipe of the engine or the air filter. However, with the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M35/08F02M35/14
Inventor 韩秋刁来春
Owner CHONGQING LONCIN MOTOR
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