CN209704673U - A kind of double loop exhaust silencer for internal-combustion engine - Google Patents

A kind of double loop exhaust silencer for internal-combustion engine Download PDF

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Publication number
CN209704673U
CN209704673U CN201920285182.XU CN201920285182U CN209704673U CN 209704673 U CN209704673 U CN 209704673U CN 201920285182 U CN201920285182 U CN 201920285182U CN 209704673 U CN209704673 U CN 209704673U
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CN
China
Prior art keywords
cavity
hush pipe
silencer
pipe passes
combustion engine
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201920285182.XU
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Chinese (zh)
Inventor
司英群
于邦海
王滨滨
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhengzhou Jingyida Auto Parts Co Ltd
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Zhengzhou Lean Environmental Protection Technology Co Ltd
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Priority to CN201920285182.XU priority Critical patent/CN209704673U/en
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Abstract

The utility model discloses a kind of double loop exhaust silencer for internal-combustion engine, including setting in silencer, there are four the cavitys being arranged successively, wherein the first hush pipe passes through the first cavity, second hush pipe passes through the second cavity, third hush pipe passes through the second cavity and third cavity, 4th hush pipe passes through third cavity, and the 5th hush pipe passes through the third and fourth cavity, is enclosed with silencing cotton on the outside of the 5th hush pipe;The hush pipe is equipped with damping hole.The utility model makes exhaust airstream realize two 360 ° of circuit altogether inside silencer, and air-flow stroke is longer, so as to clear up exhaust energy, reduces low-frequency noise.

Description

A kind of double loop exhaust silencer for internal-combustion engine
Technical field
The utility model belongs to vehicular engine exhaust system technical field, arranges more particularly to a kind of double loop internal combustion engine Gas silencer.
Background technique
For engine in idling or the slow-speed of revolution, for exhaust components based on low frequency, it is similar that exhaust sound has " rub-a-dub rub-a-dub " The sound beaten a drum, subjective feeling is poor, influences vehicle riding comfort.The silencer of general structure is for exhaust high-frequency noises Effect is preferable, and low-frequency range erasure effect is poor, designs a broadband, particularly reduces the good silencer change of low-frequency noise effect It is more more and more urgent.
Utility model content
For existing demand, the utility model possesses preferable low frequency noise elimination energy by design air-flow double back line structure Power can solve engine under idling or low speed state, and exhaust components low frequency height causes " rub-a-dub rub-a-dub " sound of beating a drum, it is possible to provide Higher insertion loss, and lower exhaust back pressure can be kept.
The technical solution adopted in the utility model are as follows: a kind of double loop exhaust silencer for internal-combustion engine, in the silencer If the first hush pipe passes through the first cavity there are four the cavity being arranged successively, the second hush pipe passes through the second cavity, third noise reduction For pipe across the second cavity and third cavity, the 4th hush pipe passes through third cavity, and the 5th hush pipe passes through the third and fourth cavity, Silencing cotton is enclosed on the outside of 5th hush pipe;The hush pipe is equipped with damping hole.
Further, separated between the neighboring chambers by partition, be provided with damping hole on the partition.
The beneficial effect that the utility model generates is:
1, gasoline engine and diesel engine exhaust system, silencer insertion loss >=26dB (A) be can be applied to;
2, there is wider noise reduction frequency spectrum, it is preferable particular for 200Hz low-frequency noise erasure effect below.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Specific embodiment
In order to which the purpose of this utility model, technical solution and beneficial effect is more clearly understood, below in conjunction with attached drawing and Embodiment is described in further detail the utility model.It should be understood as that specific embodiment described herein is only used to It explains the utility model, is not restricted to the protection scope of the utility model.
As shown in Figure 1, the silencer in the utility model includes four cavitys being arranged successively, five pieces points are equipped in cavity Not Chuan Guo different cavitys hush pipe, wherein the first hush pipe 106 is connected with air inlet 101 and passes through the first cavity 102, second Hush pipe 108 passes through the second cavity 103, and third hush pipe 107 passes through the second cavity 103 and third cavity 104, the 4th hush pipe 109 pass through third cavity 104, and the 5th hush pipe 110 passes through third cavity 104 and the 4th cavity 105, the 5th hush pipe 110 End connects exhaust outlet 114.Silencing cotton 113 is enclosed on the outside of the 5th hush pipe in the 4th cavity 105.Above-mentioned four Damping hole is equipped on a hush pipe.Meanwhile it can be increased according to gas actual flow on the partition between neighboring chambers corresponding Damping hole, to reduce exhaust back pressure.
Air-flow enters silencer by silencer air inlet 101, passes through damping hole on the first hush pipe 106 and outlet side With the first cavity 102 and the second cavity 103 is entered, the air-flow in the second cavity 103 enters the first chamber by the second hush pipe 108 Body 102, then air-flow is guided to by third hush pipe 107 by the 4th cavity 105, realize one 360 ° of circuit, the 4th cavity 105 In air-flow third cavity 104 is entered by the 4th hush pipe 109, then guide air-flow by having by the 5th hush pipe 110 The part of silencing cotton 113 handles high band noise, realizes one 360 ° of circuit again, and last air-flow passes through 114 row of exhaust outlet Silencer out.In the present invention, air-flow realizes two 360 ° of circuit altogether inside silencer, and air-flow stroke is longer, real The noise elimination pipeline that border is worked is longer, so as to clear up exhaust energy, reduces low-frequency noise.

Claims (2)

1. a kind of double loop exhaust silencer for internal-combustion engine, it is characterised in that: it is set in silencer there are four the cavity being arranged successively, the One hush pipe passes through the first cavity, and the second hush pipe passes through the second cavity, and third hush pipe passes through the second cavity and third cavity, 4th hush pipe passes through third cavity, and the 5th hush pipe passes through the third and fourth cavity, package on the outside of the 5th hush pipe There is silencing cotton;The hush pipe is equipped with damping hole.
2. a kind of double loop exhaust silencer for internal-combustion engine according to claim 1, it is characterised in that: the neighboring chambers it Between separated by partition, be provided with damping hole on the partition.
CN201920285182.XU 2019-03-07 2019-03-07 A kind of double loop exhaust silencer for internal-combustion engine Active CN209704673U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201920285182.XU CN209704673U (en) 2019-03-07 2019-03-07 A kind of double loop exhaust silencer for internal-combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201920285182.XU CN209704673U (en) 2019-03-07 2019-03-07 A kind of double loop exhaust silencer for internal-combustion engine

Publications (1)

Publication Number Publication Date
CN209704673U true CN209704673U (en) 2019-11-29

Family

ID=68643356

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201920285182.XU Active CN209704673U (en) 2019-03-07 2019-03-07 A kind of double loop exhaust silencer for internal-combustion engine

Country Status (1)

Country Link
CN (1) CN209704673U (en)

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Legal Events

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GR01 Patent grant
GR01 Patent grant
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TR01 Transfer of patent right

Effective date of registration: 20220830

Address after: 450000 No. 69, 8th Street, economic and Technological Development Zone, Zhengzhou City, Henan Province

Patentee after: ZHENGZHOU JINGYIDA AUTO PARTS Co.,Ltd.

Address before: No.366, Jingnan 5th Road, 25th Street, Zhengzhou Economic and Technological Development Zone, Henan Province, 450000

Patentee before: ZHENGZHOU JINGYIDA ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd.