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
CN106401699AInactive Publication Date: 2017-02-15湖南长丰汽车零部件有限责任公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
湖南长丰汽车零部件有限责任公司
Publication Date
2017-02-15
Estimated Expiration
Not applicable · inactive patent

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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%.
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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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