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Automobile muffler

A technology of automobile mufflers and partitions, which is applied in the direction of mufflers, machines/engines, engine components, etc., can solve the problems of poor muffler effect and high-frequency muffler effect, and is beneficial to reduce and exhaust, prevent corrosion, and facilitate installation and fixation Effect

Inactive Publication Date: 2012-04-11
宁波神丰汽车部件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a car muffler with good noise reduction effect at low frequency, intermediate frequency and high frequency in order to overcome the disadvantages of current automobile muffler, especially the poor noise reduction effect at high frequency.

Method used

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  • Automobile muffler
  • Automobile muffler
  • Automobile muffler

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] as attached figure 1 , attached figure 2 Shown: an automobile muffler, including an air inlet pipe 1, an air outlet pipe 2, a cylinder body 3, a partition 4, an air inlet pipe fixing frame 8 and a connecting frame 9.

[0025] Described dividing plate 4 comprises left dividing plate 41 and supporting dividing plate 42; See attached image 3 , attached Figure 4 : the left partition 41 and the support partition 42 all have air passage holes 43;

[0026] The left partition 41 and the support partition 42 are welded to the cylinder 3 and the cylinder 3 is divided from left to right into the left expansion chamber 5, the resonance chamber 6 and the right expansion chamber 7; the left expansion chamber 5 and the right expansion chamber The volumes of 7 are not equal, and the volume of the left expansion chamber 5 in this embodiment is smaller than that of the right expansion chamber 7.

[0027] There are two intake pipes 1; one end of one intake pipe 1 extends into the l...

Embodiment 2

[0033] as attached Figure 5 , attached Figure 6 As shown: a further improvement on Embodiment 1, the bottoms of the left expansion chamber 5 , the resonance chamber 6 and the right expansion chamber 7 all have drainage holes 31 . The inner side of the cylinder body 3 is provided with a sound-absorbing pad 10 , the material of the noise-absorbing pad 10 is glass fiber sound-absorbing cotton, and the sound-absorbing pad 10 is bonded to the cylinder body 3 .

[0034] The bottoms of the left expansion chamber, the resonance chamber and the right expansion chamber of the automobile muffler are all provided with drainage holes to discharge accumulated water to prevent corrosion and prolong the service life of the automobile muffler. The inner side of the cylinder is equipped with a sound-absorbing liner, and the impedance compound further improves the sound-absorbing effect.

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Abstract

The invention relates to the field of engine exhaust gas mufflers and in particular relates to an automobile muffler which has a better effect of eliminating noise at low frequency, medium frequency and high frequency. The automobile muffler comprises a cylinder body, baffle plates, two air inlet pipes and an air outlet pipe, wherein the baffle plates comprise a left baffle plate and a supportingbaffle plate which are provided with airflow through holes; the left baffle plate, the supporting baffle plate and the cylinder body are connected fixedly, and the cylinder body is divided into a left expanding chamber, a resonant chamber and a right expanding chamber from left to right; one end of one air inlet pipe extends into the left expanding chamber, and one end of the other air inlet pipeextends into the right expanding chamber; and one end of the air outlet pipe is positioned in the resonant chamber, and the other end of the air outlet pipe penetrates through the supporting baffle plate and then extends out of the cylinder body through the right expanding chamber. The automobile muffler has a better effect of eliminating the noise at low frequency, medium frequency and high frequency.

Description

technical field [0001] The invention relates to the field of engine exhaust mufflers, in particular to an automobile muffler which has better muffler effects at low frequency, middle frequency and high frequency. Background technique [0002] In order to eliminate the huge sound produced when the engine discharges the high-temperature and high-pressure gas after combustion, the car needs to be equipped with a muffler at the exhaust pipe; the muffler can be divided into three types: resistive muffler, resistive car muffler and impedance compound muffler according to the principle of muffler; The resistive muffler absorbs the sound energy by filling the exhaust pipe with sound-absorbing material to achieve the purpose of muffler; the resistive muffler sharply increases or reduces the cross-sectional area of ​​the pipe at a certain length inside the muffler, so that the sound wave Generate reflection and destructive interference to achieve the purpose of noise reduction; the re...

Claims

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Application Information

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IPC IPC(8): F01N1/06F01N1/10
Inventor 翁国畅杨念振
Owner 宁波神丰汽车部件有限公司
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