Automobile silencer

A technology of automobile mufflers and chambers, applied in the direction of mufflers, machines/engines, engine components, etc., can solve the problems of poor muffler effect and short service life, reduce pulsation performance, attenuate high-frequency noise, and improve low-frequency muffler The effect of sound performance

Inactive Publication Date: 2015-09-30
柳州利和排气控制系统有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a car muffler with good noise reduction effect to solve the problems of poor noise reduction effect and short service life of existing car mufflers

Method used

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  • Automobile silencer
  • Automobile silencer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Such as figure 1 and figure 2 The automobile muffler shown includes a shell provided with an air inlet pipe 5 and an air outlet pipe 3. The shell is formed by connecting a front end cover 1, a rear end cover 6 and a cylinder body 2. The cylinder body 2 is surrounded by two layers of overlapping steel plate lock seams. The two layers of steel plates have the same thickness and are 0.6 mm. The connections between the cylinder body 2 and the front end cover 1 and the rear end cover 6 are end cover crimping connections, and a drainage through hole is provided on the edge of the rear end cover 6; The inner space is divided into the first chamber a and the second chamber b by a partition plate 4 with holes along the air intake direction, the end of the intake pipe 5 is blocked and extends into the second chamber b through the partition plate 4, The inlet pipe 5 has a plurality of through holes distributed on the pipe walls of the first chamber a and the second chamber b, an...

Embodiment 2

[0015] The number of through holes on the wall of the second chamber b of the inlet pipe 5 is 3 times the number of through holes on the wall of the first chamber a; in this embodiment, the holes on the partition plate 4 are multiple and evenly distributed, and the holes The diameter is 3 millimeters; Present embodiment also has a diameter on the spacer 4 and is the large hole of 20 millimeters, and other characteristics are identical with embodiment 1.

[0016] During work, the airflow enters from the air inlet pipe 5, and the airflow that enters flows out from the through holes on the pipe wall of the first chamber a and the second chamber b respectively from the air inlet pipe 5, because the air inlet pipe 5 is on the pipe wall of the second chamber The number of upper through holes is 2 to 3 times the number of through holes on the wall of the first chamber, and the sum of the equivalent areas of the through holes separated by the two parts of the intake pipe is 1.8 to 2.1 ...

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PUM

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Abstract

The invention discloses an automobile silencer, and relates to the technical field of automobile silencer production. The automobile silencer comprises a shell provided with an air inlet pipe and an air outlet pipe. The inner space in the shell is divided into a first cavity and a second cavity by a separating disk with holes in the air inflow direction. The tail end of the air inlet pipe is blocked. The air inlet pipe penetrates through the separating disk and stretches into the second cavity. Multiple through holes of the air inlet pipe are uniformly distributed on the pipe wall of the first cavity and the pipe wall of the second cavity. Multiple through holes are formed in the separating disk. Compared with the prior art, the automobile silencer can solve the problems that the silencing effect of an existing automobile silencer is bad, and the service life is short.

Description

technical field [0001] The invention relates to the technical field of automobile muffler manufacture, in particular to a muffler for motor vehicles with small displacement engines. Background technique [0002] For motor vehicles with smaller displacement engines, due to the limitation of the installation position of the motor vehicle chassis, the volume of the muffler housing is relatively small; in order to achieve a good noise reduction effect, at present, there is a The car muffler, the car muffler includes a housing with inlet and outlet pipes, the inner space of the housing is divided into the first chamber, the second chamber and the third chamber by two partitions along the air intake direction. There are three chambers, the second chamber is provided with sound-absorbing cotton; the housing is provided with an intermediate pipe connecting the first chamber and the third chamber. This kind of automobile muffler has the following problems during use: for a muffler w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01N1/08
Inventor 周锦佳郑忠夏
Owner 柳州利和排气控制系统有限公司
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