Automobile exhaust emission device with noise reduction device

Abstract

The invention discloses an automobile exhaust emission device with a noise reduction device, which comprises a spiral curving main exhaust pipe, wherein an inlet pipe is arranged at the front part of the main exhaust pipe; a pair of outlet pipes is arranged at the tail of the main exhaust pipe; a detachable pulsation connecting pipe is arranged at the front end of the inlet pipe; a first noise reduction part and a second noise reduction part are arranged in the main exhaust pipe; the second noise reduction part is sleeved with the inner part of the first noise reduction part in a detachable manner. According to the automobile exhaust emission device with the noise reduction device, as the pulsation connecting pipe on the inlet pipe of the main exhaust pipe is adopted and a plurality of acoustic absorption cavities are arranged, the pulsation exhaust noise of a motor is reduced greatly; moreover, as the two noise reduction parts in the spiral curving main exhaust pipe are adopted, the exhaust noise of the motor can be further reduced. The automobile exhaust emission device is compact in structure, convenient for transformation and low in cost.

Description

technical field [0001] The present invention relates to an automobile device, more precisely, an automobile exhaust device with a noise reduction device. Background technique [0002] In order to reduce the exhaust noise of automobiles, especially heavy-duty vehicles, various methods have been used in automobile engineering, such as the use of new materials, etc., but these methods are either ineffective or costly and cannot be widely promoted. Especially the pulsating exhaust noise of the engine has been unable to be resolved. Contents of the invention [0003] The invention mainly solves the technical problems existing in the prior art, thereby providing an automobile exhaust device with a noise reduction device. [0004] Above-mentioned technical problem of the present invention is mainly solved by following technical scheme: [0005] An automobile exhaust device with a noise reduction device, the automobile exhaust device with a noise reduction device includes a spir...

AI Technical Summary

Problems solved by technology

[0002] In order to reduce the exhaust noise of automobiles, especially heavy vehicles, various methods have been used in automobile engineering, such as the use of new materials, etc., but these methods are either ineffective or costly and cannot be widely used

Especially the pulsating exhaust noise of the engine has been unable to solve

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