CN102562223B - The automobile exhaust muffler of a kind of modified node method - Google Patents
The automobile exhaust muffler of a kind of modified node method Download PDFInfo
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- CN102562223B CN102562223B CN201110456245.1A CN201110456245A CN102562223B CN 102562223 B CN102562223 B CN 102562223B CN 201110456245 A CN201110456245 A CN 201110456245A CN 102562223 B CN102562223 B CN 102562223B
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Abstract
The present invention relates to the automobile exhaust muffler of a kind of modified node method, comprising cylinder (1), inlet pipe (2) and vapor pipe (3), cylinder (1) is sealed by front end end cover (1-1) and rear end cap (1-2), it is provided with in cylinder (1) and cylinder (1) first dividing plate (4) and second partition (5), by the first dividing plate (4) and second partition (5), housing (1) is separated into the first cavity (6), 2nd cavity (7) and the 3rd cavity (8), it is characterized in that: described inlet pipe (2) is W type bend pipe structure, this inlet pipe (2) directly manages (2-1) by first, first transition perforation bend pipe (2-2), transition is directly managed (2-3), inlet throat (2-4), 2nd transition perforation bend pipe (2-5) and the 2nd is directly managed (2-6) and is formed, the end face that vapor pipe (3) is positioned at the first cavity (1) is provided with enlarging. the invention solves gas velocity to increase and problem that exhaust back pressure is increased after causing gas constantly to be expanded and compress due to inlet pipe, escape pipe and transition conduit structure, engine power moment of torsion can be increased, effectively eliminate low-frequency noise.
Description
Technical field
The present invention relates to a kind of sourdine, especially a kind of automobile exhaust muffler, particularly relates to the automobile exhaust muffler of a kind of modified node method. Belong to auto parts machinery and manufacturing technology field.
Background technology
Exhaust noise is the most important noisemaker of automobile, therefore, exhaust snubber need to be installed on automobile, by the noise reduction measure that the exhaust noise of exhaust snubber control automobile is effective, the noise quality index of automobile is had a significant impact by the design level of sourdine, studies and design that soundproof effect is good, power loss is low, the rational exhaust snubber of structural manufacturing process is necessary. The structure of the most of sourdines used on current automobile is as follows: in closed housing, first, second dividing plate and housing axially arrangement vertical, spaced, and enclosure interior is isolated into first, second expansion chamber and room, three chambeies, room, resistance noise reduction chamber. Inlet pipe, escape pipe are axially parallel with housing with transition conduit, spaced arrangement. Inlet pipe is once worn in the 2nd expansion chamber by outside housing after housing front end end cover and first, second dividing plate. Escape pipe passes housing successively from left chamber after first, second dividing plate and rear end cap.Transition conduit is worn in the 2nd expansion chamber after first, second dividing plate from the first expansion chamber. Inlet pipe, escape pipe and transition conduit are straight pipe, and it is distributed with aperture.
Above-mentioned prior art construction exhaust snubber, owing to inlet pipe, escape pipe and transition conduit are straight pipe, exhaust airstream enters from inlet pipe, through transition conduit, from the process that escape pipe is discharged, gas, by constantly expanding and compress, causes air-flow velocity to increase, the increase of exhaust airstream speed causes exhaust back pressure to increase, and engine power moment of torsion declines.
Summary of the invention
It is an object of the invention to the problem increased and exhaust back pressure is increased after causing gas constantly to be expanded and compress to solve prior art gas velocity due to inlet pipe, escape pipe and transition conduit structure, thering is provided the automobile exhaust muffler of a kind of modified node method, the automobile exhaust muffler of this modified node method can increase engine power moment of torsion, effectively eliminate low-frequency noise.
The object of the present invention can reach by the following technical programs:
An automobile exhaust muffler for modified node method, comprises cylinder, inlet pipe and vapor pipe, and cylinder is by front end end cover and rear end cap seal; The first dividing plate and second partition that are connected with cylinder inner side-wall it is provided with in cylinder, by the first dividing plate and second partition, cylinder is separated into the first cavity, the 2nd cavity and the 3rd cavity, its constructional feature is: described inlet pipe is W type bend pipe structure, and this inlet pipe is directly managed by first, the first transition perforation bend pipe, transition is directly managed, inlet throat, the 2nd transition perforation bend pipe and the 2nd straight pipe are formed; First straight pipe is connected with the first transition perforation bend pipe in the 3rd cavity through the first cavity, the 2nd cavity successively from an outer end of cylinder, first transition perforation bend pipe is connected by transition straight Guan Yu bis-transition perforation bend pipe, inlet throat is arranged in the vertical direction of the straight pipe of transition, and the 2nd straight Guan Yu bis-transition perforation bend pipe connects and passes in the 2nd cavity to the first cavity through the 3rd cavity; The end face that vapor pipe is positioned at the first cavity is provided with loudspeaker enlarging, vapor pipe by the first cavity through the 2nd cavity and the 3rd cavity to another outer end of cylinder.
The object of the present invention can also reach by the following technical programs:
Further technical solution is: described front end end cover, the first dividing plate, second partition and rear end cap can all oval in shape.
Further technical solution is: the part that described vapor pipe is positioned at the 3rd cavity can offer some apertures, is coated with reed at the aperture place offered and not manages, and described reed is filled with sound-absorbing material in not managing.
Further technical solution is: the described first straight pipe one end outside cylinder is the air inlet end of inlet pipe; One end in the 2nd cavity of described inlet throat and the 2nd straight pipe one end in the first cavity are two outlet sides of inlet pipe.
Further technical solution is: can be respectively equipped with three row's perforation on described first transition perforation bend pipe and the 2nd transition perforation bend pipe, make the 3rd cavity form a resonator by perforation.
Further technical solution is: described inlet throat pipe straight with transition is connected makes the 2nd cavity can form a resonator cavity.
The present invention has following outstanding useful effect:
1, the present invention is owing to boring a hole bend pipe transition with transition between the air inlet end of inlet pipe and two outlet sides, make air-flow can smoothly flow through transition directly to manage, perforated section on transition perforation bend pipe makes the 3rd cavity at place define a resonator, therefore, have reduce resistance to flow, reduce exhaust back pressure and eliminate band segment noise outstanding effect; And inlet pipe is in the outlet side of the 2nd cavity, forming a resonator cavity by trunnion, this resonator cavity makes low-frequency noise be reduced.
2, the end face that the present invention is positioned at the first cavity due to vapor pipe is provided with enlarging, flaring structure is connected smoothly by fillet and its pipe body, therefore can ensure that exhaust airstream can not occur that with pipeline wall face is separated, exhaust airstream speed can be reduced, after the smoothed enlargement and contraction of exhaust airstream can be made, speed reduces greatly, and exhaust back pressure reduces, and engine power moment of torsion is improved.
3, present configuration is reasonable, it may also be useful to convenient, practical, it may also be useful to the life-span is long, it is possible to reduces the sound pollution of environment, meets vast civic demand.
Accompanying drawing explanation
Fig. 1 is the structural representation of the specific embodiment of the invention 1.
Fig. 2 is the A-A sectional view of Fig. 1.
Fig. 3 is the B-B sectional view of Fig. 1.
Wherein, 1-cylinder, 2-inlet pipe, 3-vapor pipe, 4-first dividing plate, 5-second partition, 6-first cavity, 7-the 2nd cavity, 8-the 3rd cavity, 9-reed is not managed.
Embodiment
Specific embodiment 1:
Fig. 1, Fig. 2 and Fig. 3 form specific embodiments of the invention 1.
With reference to Fig. 1, Fig. 2 and Fig. 3, the present embodiment comprises cylinder 1, inlet pipe 2 and vapor pipe 3, and cylinder 1 is sealed by front end end cover 1-1 and rear end cap 1-2; The first dividing plate 4 and second partition 5 that are connected with cylinder 1 inner side-wall it is provided with in cylinder 1, by the first dividing plate 4 and second partition 5, cylinder 1 is separated into the first cavity 6, the 2nd cavity 7 and the 3rd cavity 8, described inlet pipe 2 is W type bend pipe structure, and this inlet pipe 2 is made up of the first straight pipe 2-1, the first transition perforation bend pipe 2-2, the straight pipe 2-3 of transition, inlet throat 2-4, the 2nd transition perforation straight pipe 2-6 of bend pipe 2-5 and the 2nd; First straight pipe 2-1 is connected with the first transition perforation bend pipe 2-2 in the 3rd cavity 8 through the first cavity 6, the 2nd cavity 7 successively from an outer end of cylinder 1, first transition perforation bend pipe 2-2 is connected with the 2nd transition perforation bend pipe 2-5 by the straight pipe 2-3 of transition, inlet throat 2-4 is arranged in the vertical direction of the straight pipe 2-3 of transition, and the 2nd straight pipe 2-6 is connected with the 2nd transition perforation bend pipe 2-5 and passes in the 2nd cavity 7 to the first cavity 6 through the 3rd cavity 8; The end face that vapor pipe 3 is positioned at the first cavity 6 is provided with loudspeaker enlarging 3-1, and vapor pipe 3 passes another outer end of the 2nd cavity 7 and the 3rd cavity 8 to cylinder 1 by the first cavity 6.
In the present embodiment, described front end end cover 1-1, the first dividing plate 4, second partition 5 and rear end cap 1-2 all oval in shape. The part that described vapor pipe 3 is positioned at the 3rd cavity 8 has offered some apertures, is coated with reed not pipe 9 at the aperture place offered, and described reed is not filled with sound-absorbing material in pipe 9. Described first straight pipe 2-1 one end outside cylinder 1 is the air inlet end of inlet pipe 2; One end in the 2nd cavity 7 of described inlet throat 2-4 and the 2nd straight pipe 2-6 one end in the first cavity 6 are two outlet sides of inlet pipe 1. Described first transition perforation bend pipe 2-2 and the 2nd transition perforation bend pipe 2-5 is respectively equipped with three row's perforation.
The principle of work of the present embodiment is:
Engine expellant gas flows to from the first of inlet pipe 2 the straight pipe 2-1, the transition of the bend pipe 2-2 that bores a hole through transition, and a part for gas flows into the 3rd cavity 8 by the perforation on transition perforation bend pipe 2-2, forms resonance; A part flows into the straight pipe 2-3 of transition in addition. The gas part inflow inlet throat 2-4 flowing into the straight pipe 2-3 of transition enters the 2nd cavity 7, produces resonance, and low-frequency noise obtains very big reduction; Remaining a part of gas stream is through transition perforation bend pipe 2-5, and portion gas is formed by perforation inflow the 3rd cavity 8 and resonates, and remaining gas flows into the first cavity 6 through the 2nd straight pipe 2-6. The enlarging 3-1 that gas enters vapor pipe 3 after the first cavity 6 intramedullary expansion shrinks, and after smoothed transition, gas-flow resistance reduces greatly, thus reduces exhaust back pressure, then flows into the pipe body of vapor pipe 3; The pipe body of vapor pipe 3 spreading and the elimination of sound-absorbing material in reed not pipe 9 through the 3rd cavity 8 place aperture, high frequency noise is reduced.
It should be noted that; above-described embodiment is the preferred forms of the present invention; but the claimed technical scheme of the present invention is not limited to this specific embodiment, any technical scheme according to the present invention and design thereof be equal to replaces or change, all belongs to protection scope of the present invention.
Claims (6)
1. an automobile exhaust muffler for modified node method, comprises cylinder (1), inlet pipe (2) and vapor pipe (3), and cylinder (1) is sealed by front end end cover (1-1) and rear end cap (1-2); The first dividing plate (4) and second partition (5) that are connected with cylinder (1) inner side-wall it is provided with in cylinder (1), by the first dividing plate (4) and second partition (5), cylinder (1) is separated into the first cavity (6), the 2nd cavity (7) and the 3rd cavity (8), it is characterized in that: described inlet pipe (2) is W type bend pipe structure, this inlet pipe (2) by first directly manage (2-1), first transition perforation bend pipe (2-2), transition directly manage (2-3), inlet throat (2-4), the 2nd transition perforation bend pipe (2-5) and the 2nd directly pipe (2-6) form; First directly manages (2-1) is connected with the first transition perforation bend pipe (2-2) in the 3rd cavity (8) through the first cavity (6), the 2nd cavity (7) successively from an outer end of cylinder (1), first transition perforation bend pipe (2-2) is directly managed (2-3) by transition and is connected with the 2nd transition perforation bend pipe (2-5), inlet throat (2-4) is arranged on transition and directly manages in the vertical direction of (2-3), the 2nd directly manage (2-6) with the 2nd transition bore a hole bend pipe (2-5) be connected and through the 3rd cavity (8) through the 2nd cavity (7) in the first cavity (6); The end face that vapor pipe (3) is positioned at the first cavity (6) is provided with loudspeaker enlarging (3-1), vapor pipe (3) by the first cavity (6) through the 2nd cavity (7) and the 3rd cavity (8) to another outer end of cylinder (1).
2. the automobile exhaust muffler of a kind of modified node method according to claim 1, it is characterised in that: described front end end cover (1-1), the first dividing plate (4), second partition (5) and rear end cap (1-2) each oval in shape.
3. the automobile exhaust muffler of a kind of modified node method according to claim 1, it is characterized in that: the part that described vapor pipe (3) is positioned at the 3rd cavity (8) is provided with some apertures, it is coated with reed at described aperture place not to manage (9), not manages in (9) in reed and be filled with sound-absorbing material.
4. the automobile exhaust muffler of a kind of modified node method according to claim 1, it is characterised in that: described first directly manages the air inlet end that (2-1) is inlet pipe (2) in the outer one end of cylinder (1); Two outlet sides that (2-6) one end in the first cavity (6) is inlet pipe (2) are directly managed in described inlet throat (2-4) one end and the 2nd in the 2nd cavity (7).
5. the automobile exhaust muffler of a kind of modified node method according to claim 1, it is characterized in that: described first transition perforation bend pipe (2-2) and the 2nd transition perforation bend pipe (2-5) are respectively equipped with three row's perforation, make the 3rd cavity (8) form a resonator by perforation.
6. the automobile exhaust muffler of a kind of modified node method according to claim 1, it is characterised in that: described inlet throat (2-4) directly manage with transition (2-3) be connected make the 2nd cavity (7) formed a resonator cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110456245.1A CN102562223B (en) | 2011-12-29 | 2011-12-29 | The automobile exhaust muffler of a kind of modified node method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110456245.1A CN102562223B (en) | 2011-12-29 | 2011-12-29 | The automobile exhaust muffler of a kind of modified node method |
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| Publication Number | Publication Date |
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| CN102562223A CN102562223A (en) | 2012-07-11 |
| CN102562223B true CN102562223B (en) | 2016-06-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110456245.1A Active CN102562223B (en) | 2011-12-29 | 2011-12-29 | The automobile exhaust muffler of a kind of modified node method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113482754A (en) * | 2021-07-30 | 2021-10-08 | 重庆长安汽车股份有限公司 | Noise eliminator and vehicle |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114135364B (en) * | 2021-12-07 | 2023-09-15 | 杭叉集团股份有限公司 | Three-channel parallel double-resonant-cavity industrial vehicle exhaust muffler |
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| CN2921306Y (en) * | 2006-06-28 | 2007-07-11 | 力帆实业(集团)有限公司 | Impedance composite noise silencer |
| CN101694172A (en) * | 2009-09-30 | 2010-04-14 | 重庆长安汽车股份有限公司 | Automobile muffler for reducing exhaust back pressure |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58148215A (en) * | 1982-02-25 | 1983-09-03 | Nissan Motor Co Ltd | Muffler of automobile engine |
| US20090000863A1 (en) * | 2007-06-28 | 2009-01-01 | Share Win Industry Co., Ltd. | Exhaust pipe |
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2011
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2921306Y (en) * | 2006-06-28 | 2007-07-11 | 力帆实业(集团)有限公司 | Impedance composite noise silencer |
| CN101694172A (en) * | 2009-09-30 | 2010-04-14 | 重庆长安汽车股份有限公司 | Automobile muffler for reducing exhaust back pressure |
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| 摩托车***的性能分析及改进设计;刘文礼;《中北大学学位论文》;20070531;第28-33页 * |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113482754A (en) * | 2021-07-30 | 2021-10-08 | 重庆长安汽车股份有限公司 | Noise eliminator and vehicle |
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| CN102562223A (en) | 2012-07-11 |
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