CN203035309U - Gasoline engine muffler - Google Patents

Gasoline engine muffler Download PDF

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Publication number
CN203035309U
CN203035309U CN 201320055792 CN201320055792U CN203035309U CN 203035309 U CN203035309 U CN 203035309U CN 201320055792 CN201320055792 CN 201320055792 CN 201320055792 U CN201320055792 U CN 201320055792U CN 203035309 U CN203035309 U CN 203035309U
Authority
CN
China
Prior art keywords
expansion chamber
layer
metal thin
outlet pipe
muffler
Prior art date
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.)
Expired - Fee Related
Application number
CN 201320055792
Other languages
Chinese (zh)
Inventor
林金松
桑华东
方明
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.)
Zhejiang Jin Fei Vehicle Body Fittings Manufacturing Co Ltd
Original Assignee
Zhejiang Jin Fei Vehicle Body Fittings Manufacturing Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Zhejiang Jin Fei Vehicle Body Fittings Manufacturing Co Ltd filed Critical Zhejiang Jin Fei Vehicle Body Fittings Manufacturing Co Ltd
Priority to CN 201320055792 priority Critical patent/CN203035309U/en
Application granted granted Critical
Publication of CN203035309U publication Critical patent/CN203035309U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model relates to exhaust gas emission muffling equipment, in particular to a gasoline engine muffler. The gasoline engine muffler comprises a gas inlet pipe, a gas exhaust pipe and a muffler barrel body, wherein an inner cavity of the muffler barrel body is separated by two separation plates with holes into three mutually communicated expansion chambers, the gas inlet pipe and the gas exhaust pipe are respectively arranged in the expansion chambers at two sides in an inserting mode, straight pipe parts, located in the expansion chambers, of the gas inlet pipe and the gas exhaust pipe are muffling pipe portions with holes, the side wall of the muffler barrel body comprises an inner layer of metal thin wall and an outer layer of metal thin wall, and a discrete type glass fiber layer is clamped between the inner layer of metal thin wall and the outer layer of metal thin wall. The gasoline engine muffler has the advantage of reducing noise and vibration.

Description

The petrol engine silencing apparatus
Technical field
The utility model relates to a kind of exhaust emissions silencing equipment, is specifically related to a kind of petrol engine silencing apparatus.
Background technique
Silencing apparatus is to stop sound transmission and a kind of device of allowing air-flow to pass through, is the important measures of eliminating air power noise.On the existing general gasoline engines silencing apparatus is installed, it generally is the housing structure of being made by sheet metal, silencer cylinder is provided with suction tude and outlet pipe, suction tude and outlet pipe are communicated with the silencing apparatus inner chamber, the waste gas that motor is discharged is discharged from outlet pipe after suction tude enters the silencing apparatus inner chamber again; The conventional muffler tube structure is mainly single layer structure or double-layer thin wall structure, single layer structure satisfies rigidity and life requirement in order to make it, wall thickness is very big, thereby the weight of whole vent systems is increased greatly, also increase greatly on the cost, traditional double-layer thin wall structure is because the defective of producer's manufacturing process, make between the two-layer thin-walled and have the gap, two-layerly be not bonded together fully, because the thin barrel of gas shock causes vibration, thereby produce extra radiated noise, make the noise of car load become big.
Summary of the invention
At the deficiency that prior art exists, the purpose of this utility model is to provide a kind of noise low, the effective petrol engine silencing apparatus of eliminating the noise.
For achieving the above object, the utility model provides following technological scheme: a kind of petrol engine silencing apparatus, include suction tude, outlet pipe and silencer cylinder, described silencer cylinder inner chamber is separated to form three expansion chamber that communicate through two demarcation strips with holes, described suction tude and outlet pipe are plugged in respectively in the expansion chamber of both sides, the straight-tube portion that described suction tude and outlet pipe are positioned at expansion chamber is hush tube portion with holes, it is characterized in that: in described silencer cylinder sidewall includes, the outer layer metal thin-walled, described in, be folded with the discrete type glass fibre layer between the outer layer metal thin-walled.
Described discrete type glass fibre layer thickness is 2-4mm.
Hush tube portion on the described suction tude is positioned at the neutral position of its place expansion chamber, and the hush tube portion on the described outlet pipe is positioned at the marginal position of its place expansion chamber.
By adopting technique scheme, eliminated gap between the two-layer thin-walled of conventional muffler cylindrical shell, effectively play the effect of sound insulation and vibration damping, improve noise reduction; The hush tube portion of suction tude is positioned at the neutral position simultaneously, is convenient to gas and diffuses in the expansion chamber of place, and the hush tube portion of outlet pipe is positioned at side, makes the gas flow pass lengthen, and it is more thorough to be convenient to the gas responance noise elimination, improves the noise reduction effectiveness in vibration suppression.
Below in conjunction with accompanying drawing the utility model is further described.
Description of drawings
Fig. 1 is the petrol engine acoustic wave filter structure schematic representation of the utility model specific embodiment.
The 1-suction tude, 2-outlet pipe, 3-silencer cylinder, 30-inner layer metal thin-walled, 31-outer layer metal thin-walled, 32-discrete type glass fibre layer, 4-first demarcation strip, 5-second demarcation strip, 6-first expansion chamber, 7-second expansion chamber, 8-the 3rd expansion chamber
Embodiment
Referring to accompanying drawing 1, the disclosed a kind of petrol engine silencing apparatus of the utility model includes suction tude 1, outlet pipe 2 and silencer cylinder 3; Be provided with first demarcation strip 4 with holes and second demarcation strip 5 in described silencer cylinder 3 inner chambers, first demarcation strip 4 and second demarcation strip, 5 axial also column distributions are arranged in silencer cylinder 3 inner chambers, silencer cylinder 3 inner chambers are separated to form first expansion chamber 6, second expansion chamber 7 and the 3rd expansion chamber 8 that communicates; Described suction tude 1 is plugged in first expansion chamber 6, outlet pipe 2 is plugged in the 3rd expansion chamber 8, described suction tude 1 and outlet pipe 2 constitute by bent tube section and straight-tube portion, the straight-tube portion of suction tude 1 and outlet pipe 2 lays respectively in first expansion chamber 6 and the 3rd expansion chamber 8, the straight-tube portion that suction tude 1 is positioned at first expansion chamber 6 is hush tube portion with holes, and the hush tube portion of suction tude 1 is positioned at the neutral position of first expansion chamber 6; The straight-tube portion that outlet pipe 2 is positioned at the 3rd expansion chamber 8 is hush tube portion with holes, and the hush tube portion of outlet pipe 2 is positioned at the marginal position of the 3rd expansion chamber 8; Arrange like this, be convenient in three expansion chamber that gas enters silencing apparatus, resonant silencing improves the noise reduction effectiveness in vibration suppression fully.
In this specific embodiment, described silencer cylinder 3 sidewalls include inside and outside layer metal thin-wall 30,31, are folded with discrete type glass fibre layer 32 between the described inside and outside layer metal thin-wall 30,31; Discrete type glass fibre layer 32 thickness are 2-4mm, and discrete type glass fibre layer 32 thickness the best is 3mm.

Claims (3)

1. petrol engine silencing apparatus, include suction tude, outlet pipe and silencer cylinder, described silencer cylinder inner chamber is separated to form three expansion chamber that communicate through two demarcation strips with holes, described suction tude and outlet pipe are plugged in respectively in the expansion chamber of both sides, the straight-tube portion that described suction tude and outlet pipe are positioned at expansion chamber is hush tube portion with holes, it is characterized in that: described silencer cylinder sidewall includes inside and outside layer metal thin-wall, is folded with the discrete type glass fibre layer between the described inside and outside layer metal thin-wall.
2. petrol engine silencing apparatus according to claim 1, it is characterized in that: described discrete type glass fibre layer thickness is 2-4mm.
3. petrol engine silencing apparatus according to claim 1 and 2, it is characterized in that: the hush tube portion on the described suction tude is positioned at the neutral position of its place expansion chamber, and the hush tube portion on the described outlet pipe is positioned at the marginal position of its place expansion chamber.
CN 201320055792 2013-01-07 2013-01-07 Gasoline engine muffler Expired - Fee Related CN203035309U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201320055792 CN203035309U (en) 2013-01-07 2013-01-07 Gasoline engine muffler

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201320055792 CN203035309U (en) 2013-01-07 2013-01-07 Gasoline engine muffler

Publications (1)

Publication Number Publication Date
CN203035309U true CN203035309U (en) 2013-07-03

Family

ID=48687442

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201320055792 Expired - Fee Related CN203035309U (en) 2013-01-07 2013-01-07 Gasoline engine muffler

Country Status (1)

Country Link
CN (1) CN203035309U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106150602A (en) * 2015-03-25 2016-11-23 常州科普动力机械有限公司 Silencer for automobile and method of work thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106150602A (en) * 2015-03-25 2016-11-23 常州科普动力机械有限公司 Silencer for automobile and method of work thereof

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Legal Events

Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130703

Termination date: 20160107