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Hedging type exhaust silencer

An exhaust muffler and hedging technology, which is applied in the direction of mufflers, machines/engines, engine components, etc., can solve problems such as unsatisfactory muffler effects, achieve smooth and gentle airflow, reduce exhaust noise, and maintain airflow

Inactive Publication Date: 2012-11-14
安徽金力机械制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, practice has also proved that the actual noise reduction effect of the current muffler is not ideal in the process of automobile acceleration, etc., and needs to be continuously improved.

Method used

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  • Hedging type exhaust silencer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] figure 1 Shown is embodiment one of the present invention, and in this embodiment, this opposite type exhaust muffler comprises a main intake pipe 1 that joins with engine exhaust pipe, and its end is provided with matching flange 10; Three hedges 2, 2', 2" are connected in series behind the main air intake pipe 1; each of the hedges has an air inlet 20 and an exhaust port 22, and two sections of elbows 21, the two sections of elbows 21 are respectively drawn from the air inlet 20, and meet at the air outlet 22; the two sections of elbows 21 are symmetrical about the center line of the air inlet 20 and the air outlet 22; The direction of the airflow path in the two sections of the elbow is 180° in front of the exhaust port 22; the air inlet 20 of the first said hedge 2 is connected to the main air intake pipe 1, and the last said hedge 2" The exhaust port of the exhaust port communicates with a trumpet-shaped diffuser pipe 4.

[0024] Above-mentioned hedging type exha...

Embodiment 2

[0027] figure 2 Shown is Embodiment 2 of the present invention. In Embodiment 2, the difference from Embodiment 1 is that: the outside of the hedge group formed by each of the hedges 2, 2', 2" also surrounds a sealed Silencer chamber 3; Silencer material 31 is provided between the silencer chamber 3 and the hedge group; completely consistent silencer holes 210 are provided on the pipe walls of the two sections of elbows of each of the hedges, and the air intake of each hedge The pipe wall of the port 20 and the pipe wall of the exhaust port 22 are also provided with sound-absorbing holes, and the sound-absorbing holes allow a part of the noise airflow flowing through the flusher group to flow into the sound-absorbing chamber 3 and be absorbed by the sound-absorbing chamber. Absorbed by the sound-absorbing material 31 in the sound-absorbing chamber 3.

Embodiment 3

[0029] image 3 Shown is Embodiment 3 of the present invention, and its difference with Embodiment 2 is: the sound-absorbing holes 210 are only distributed on the pipe wall of the air inlet 20 and the pipe wall of the exhaust port 22 of each flusher; Thereby, the noise air flow can only flow into the muffler chamber 3 through the pipe wall of the air inlet 20 or the air outlet 22, and ensure that the air flow state in the two sections of the elbow 21 of each hedge is completely symmetrical, so as to ensure the hedging effect .

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Abstract

The invention provides a hedging type exhaust silencer. The hedging type exhaust silencer is connected to an engine exhaust pipe and comprises a main air inlet pipe which is connected with the engine exhaust pipe, wherein the rear part of the main air inlet pipe is connected with one or more than one hedging device in series, each hedging device is provided with an air inlet, an air outlet and two sections of elbow pipes, the two sections of the elbow pipes are respectively led out from the air inlet and are interacted at the air outlet, the two sections of the elbow pipes are symmetrical corresponding to a central connecting line of the air inlet and the air outlet, a 180-degree angle is formed between airflow path directions in the two sections of the elbow pipes in front of the air outlet, the air inlet of a first hedging device is connected with the main air inlet pipe, and the air outlet of a last hedging device is communicated with a horn-shaped diffusing pipe. According to the hedging type exhaust silencer provided by the invention, the continuous pulse air pressure during an engine exhaust process can be restrained to a large extent, thus the airflow exhausted from the tail end of the hedging type exhaust silencer can be stable and temperate, and the exhaust noise can be reduced to a large extent.

Description

[0001] technical field [0002] The present invention relates to a mechanical silencer, in particular to a silencer for an engine exhaust pipe. [0003] Background technique [0004] During the exhaust process of the automobile engine, continuous pulse air pressure will be generated, and the pulse gas rushes out of the exhaust port at high speed. A silencer is installed on the air pipe to reduce noise. [0005] The current muffler mainly includes a closed muffler chamber, which is provided with a muffler pipe full of through holes, the muffler pipe runs through the muffler chamber, one end of which is connected to the exhaust pipe, and the other end leads to the outside world; Moreover, a sound-absorbing material is filled between the sound-absorbing cavity and the sound-absorbing pipe to promote sound-absorbing effect. [0006] In fact, since the muffler pipe is continuous, the exhaust resistance is the least along the path extending along the axis of the muffler pi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01N1/06F01N1/24
Inventor 马根昌
Owner 安徽金力机械制造有限公司
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