Noise reduction device of exhaust pipe

A technology of muffler device and exhaust pipe, applied in muffler device, exhaust device, engine components, etc., can solve the problems of large power loss of muffler, limited application range, poor low-frequency noise effect, etc. The effect of the possibility of small airflow remaining

Active Publication Date: 2014-11-26
平邑经济开发区投资发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the production and processing of general mufflers, the resistive mufflers and resistive mufflers mainly used on the market can only deal with high-frequency or low-frequency noise separately, and the scope of application is not wide. In terms

Method used

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  • Noise reduction device of exhaust pipe

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Effect test

Embodiment 1

[0023] Such as figure 1 As shown, the silencer device of the exhaust pipe of the present invention includes a cylinder body 1, a silencer chamber 2 is arranged in the cylinder body 1, and an air inlet 3 and an air outlet port 4 are respectively arranged at both ends of the cylinder body 1. Two partitions 5 and baffles 6 are sequentially installed in the muffler chamber 2 along the direction of the air outlet 4, the connecting pipe 7 runs through the upper parts of the two partitions 5, and the connecting pipe 7 runs through the lower parts of the two baffles 6, respectively. The bottom of the dividing plate 5 is provided with a plurality of through holes 8, the top of the baffle plate 6 is provided with a plurality of air holes 9, and a vent pipe 10 is also connected between the air outlet 4 and the air inlet 3, and the vent pipe 10 Through the partition plate 5 and the baffle plate 6, a pneumatic control valve 11 is provided at the connection between the vent pipe 10 and the ...

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PUM

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Abstract

The invention discloses a noise reduction device of an exhaust pipe. The noise reduction device of the exhaust pipe comprises a barrel. A noise reduction cavity is formed in the barrel. The two ends of the barrel are provided with an air inlet and an air outlet respectively. Two partition plates and two baffles are installed in the noise reduction cavity sequentially in the direction of the air outlet. A connection pipe penetrates through the upper portions of the two partition plates and penetrates through the lower portions of the two baffles. The lower portion of each partition plate is provided with a plurality of through holes. A plurality of air holes are formed in the upper portion of each baffle. A ventilation pipe is connected between the air outlet and the air inlet and penetrates through the partition plates and the baffles. A pneumatic control valve is arranged at the connecting position between the ventilation pipe and the air inlet. When the flow of air flowing in from the air inlet is small, noise generated by air flow correspondingly is low, the pneumatic control valve is closed directly, the air flow is directly exhausted from the ventilation pipe via the air outlet, the possibility of residual air flow in the noise reduction cavity is decreased, and the service life of the noise reduction device can be prolonged.

Description

technical field [0001] The invention relates to a muffler, in particular to a muffler for an exhaust pipe. Background technique [0002] Traffic noise is the pollution source with the strongest radiation and the widest influence in the urban environment. In the noise of motor vehicles, exhaust noise is one of the main noise sources. Its reduction is mainly through the installation of exhaust mufflers. After the muffler is installed, it will inevitably have a great impact on the engine; the power loss of the general muffler is 3% to 8%. Larger power loss is allowed when the muffler is larger; lower power loss is required for the muffler matching the low-power engine. [0003] The number of automobiles in our country is increasing, and people's requirements for automobiles are no longer just means of transportation, but also energy-saving, environmental protection, aesthetics and comfort. Traffic noise from motor vehicles is the main source of noise on urban roads, and noise...

Claims

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Application Information

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IPC IPC(8): F01N13/00F01N1/00
Inventor 朱文远周尚燕胡建中
Owner 平邑经济开发区投资发展有限公司
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