Silencer drainage structure

A technology of drainage structure and muffler, applied in muffler device, exhaust device, machine/engine, etc., can solve problems such as engine failure to start, pipeline corrosion, pipeline water accumulation, etc., and achieve the effect of simple and reliable structure and simple molding.

Inactive Publication Date: 2014-10-01
CHONGQING CHANGAN AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the design process of the muffler, due to layout design problems, the pipeline design of the muffler itself must also take into account the drainage problem, otherwise, there will be a series of problems such as water accumulation in the pipeline, engine failure to start, and pipeline corrosion

Method used

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  • Silencer drainage structure

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Embodiment Construction

[0011] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0012] see figure 1 The shown drainage structure of a muffler for an engine exhaust system includes a muffler pipe body 1, and its prominent substantive features are: multiple rows of internal drainage holes 5 are arranged on the muffler pipe body along the circumference of the pipe wall; a resonant cylinder 3 There are a plurality of outer drain holes 4 in the middle of the tube, the resonant tube is set on the muffler tube body 1 and covers multiple rows of inner drain holes 5, the two ends of the resonant tube are fixedly connected with the muffler tube body 1, A resonant cavity is formed between the outer wall of the muffler pipe body 1 and the inner wall of the resonant tube 3 , and the resonant cavity is filled with sound-absorbing cotton 2 .

[0013] The sound-absorbing cotton filled in the resonant cavity promotes drainage. When the sound-absorbi...

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PUM

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Abstract

The invention relates to a silencer drainage structure of an engine exhaust system. The silencer drainage structure comprises a silencer tube body and is characterized in that multiple rows of inner drainage holes are formed in the silencer tube body in the tube wall circumferential direction. Multiple outer drainage holes are formed in the middle of a resonant cylinder, the resonant cylinder sleeves the silencer tube body and wraps multiple rows of inner drainage holes, two ends of the vibrating cylinder are fixedly connected with the silencer tube body, a resonant cavity is formed between the outer wall of the silencer tube body and the inner wall of the resonant cylinder, and silencing cotton is filled in the resonant cavity. The silencer drainage structure is simple and reliable, can timely drain water accumulated in a silencer pipeline, prevent pipeline corrosion and can further reduce noise.

Description

technical field [0001] The invention relates to the structure of an automobile engine exhaust system, in particular to a muffler drainage structure of the engine exhaust system. Background technique [0002] The principle of the automobile muffler is that the automobile exhaust pipe is composed of two pipes with different lengths, and the two pipes are separated and then merged. Since the length difference between the two pipes is equal to half of the wavelength of the sound waves emitted by the car, the two columns of sound waves interfere and cancel each other out when they are superimposed to weaken the sound intensity and reduce the sound, thus achieving the effect of noise reduction. As a large part of the car, the muffler has become more and more important. Since the working environment of the muffler is a high-temperature acid-etching environment, the industry uses stainless steel with high acid-corrosion resistance in the manufacturing process of the muffler. The m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01N13/00F01N1/04
Inventor 蹇昱扬李新兴
Owner CHONGQING CHANGAN AUTOMOBILE CO LTD
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