Gasoline exhaust silencer

An exhaust muffler, gasoline technology, applied in the direction of exhaust device, muffler device, machine/engine, etc., can solve the problem of inability to reduce noise, and achieve the effect of power loss reduction, noise reduction, and smooth airflow

Inactive Publication Date: 2017-02-15
湖南长丰汽车零部件有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such a muffler can have a certain noise reduction effect, but it cannot further reduce the noise.

Method used

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  • Gasoline exhaust silencer
  • Gasoline exhaust silencer
  • Gasoline exhaust silencer

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Experimental program
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Embodiment Construction

[0022] Attached below Figure 1 to Figure 4 The present invention is described in further detail.

[0023] refer to Figure 1 to Figure 4 , a gasoline exhaust muffler of the present invention, which includes a housing 1 and a front outer baffle 2 and a rear outer baffle 3 that are located at the front end and rear end of the housing 1 to close the housing 1, and the middle part of the housing 1 is provided There is an air inlet 4, and the outer layer of the air inlet 4 in the middle of the housing 1 is provided with a reinforcing plate 15 outer layer, and the outer layer of the reinforcing plate 15 is used to enhance the strength of the exhaust pipe so that the exhaust pipe is not easy to break; The two ends of the housing 1 are inserted with an air outlet inner pipe 5; the middle wall of the air outlet inner pipe 5 is provided with a sound-absorbing layer; the sound-absorbing layer can effectively absorb sound waves and reduce noise.

[0024] There is no intubation tube on ...

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PUM

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Abstract

The invention discloses a gasoline exhaust silencer. The silencer comprises a casing as well as a front outer baffle and a back outer baffle which are located at the front end and the back end of the casing to seal the casing; four inner baffles are arranged inside the casing; an inner cavity of the casing is divided by each inner baffle into five chambers; at least 60 air holes are formed in each inner baffle; an air inlet is formed in the middle of the casing; the outer layer of the air inlet in the middle of the casing is sleeved with a reinforcing plate outer layer; air outlet inner pipes are inserted in two ends of the casing; at least 250 air holes are formed in the middle of each air outlet inner pipe; and sound absorbing layers are arranged on outer walls of the air holes in the middles of the air outlet inner pipes. The silencer is reasonable in structure, has the relatively good silencing effect at the temperature and under the pressure of a working air flow in the required frequency range, the sound is reduced by 1-2 db at the rated rotating speed, and the power loss is reduced by 0.3%.

Description

technical field [0001] The invention relates to an automobile accessory, in particular to a gasoline exhaust muffler. Background technique [0002] With the rapid development of my country's economy, the number of cars is increasing rapidly, especially in some big cities. Car noise has become the main cause of harm to the urban environment. Car noise accounts for about 75% of environmental noise. In order to limit the noise of automobiles, the country has formulated increasingly strict mandatory noise standards, and the automobile industry policy also stipulates that uncertified products must not be sold, imported and used. Therefore, reducing automobile noise has become a challenge faced by automobile manufacturers. An important topic; and the automobile exhaust system accounts for 36% of the noise emitted by the vehicle, which is usually 10-15 decibels higher than other noises, so reducing exhaust noise is the main way to reduce automobile noise. Existing mufflers include...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01N1/10F01N13/08
CPCF01N1/10F01N13/082
Inventor 刘三娥
Owner 湖南长丰汽车零部件有限责任公司
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