CN105569772B - A kind of silencer of exhaust system for motorcycle - Google Patents

A kind of silencer of exhaust system for motorcycle Download PDF

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Publication number
CN105569772B
CN105569772B CN201610090654.7A CN201610090654A CN105569772B CN 105569772 B CN105569772 B CN 105569772B CN 201610090654 A CN201610090654 A CN 201610090654A CN 105569772 B CN105569772 B CN 105569772B
Authority
CN
China
Prior art keywords
chamber
silencer
air inlet
straight tube
snorkel
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
CN201610090654.7A
Other languages
Chinese (zh)
Other versions
CN105569772A (en
Inventor
邓玲
伯勇
谭淮旭
李川
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.)
Lifan Technology Group Co Ltd
Original Assignee
Lifan Industry Group 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 Lifan Industry Group Co Ltd filed Critical Lifan Industry Group Co Ltd
Priority to CN201610090654.7A priority Critical patent/CN105569772B/en
Publication of CN105569772A publication Critical patent/CN105569772A/en
Application granted granted Critical
Publication of CN105569772B publication Critical patent/CN105569772B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N1/00Silencing apparatus characterised by method of silencing
    • F01N1/02Silencing apparatus characterised by method of silencing by using resonance
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N1/00Silencing apparatus characterised by method of silencing
    • F01N1/06Silencing apparatus characterised by method of silencing by using interference effect
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N1/00Silencing apparatus characterised by method of silencing
    • F01N1/08Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
    • F01N1/089Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling using two or more expansion chambers in series
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2210/00Combination of methods of silencing
    • F01N2210/02Resonance and interference
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2210/00Combination of methods of silencing
    • F01N2210/04Throttling-expansion and resonance
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2210/00Combination of methods of silencing
    • F01N2210/06Throttling-expansion and interference
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2230/00Combination of silencers and other devices
    • F01N2230/04Catalytic converters

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Silencers (AREA)

Abstract

The inner cavity of the silencer of exhaust system for motorcycle provided by the invention, shell is divided into first chamber, second chamber, third chamber and the 4th chamber successively;The outlet side of the straight tube pipeline section of air inlet pipe extends to first chamber setting from silencer air inlet, and three-way catalyst is provided in the inner cavity of straight tube pipeline section, and U-tube section passes through second chamber from first chamber, then wears back first chamber setting;Further include the first snorkel and the second snorkel, the first snorkel is stretched into across third chamber in the 4th chamber from second chamber to be arranged;Second snorkel is arranged from third chamber across the 4th chamber;The escape pipe extends outer casing back end face across the 4th chamber from third chamber and forms silencer exhaust outlet.The silencer passes through the abrupt change of cross-section and section plug-in type so that exhaust gas, which enters in these chambers, to be occurred reflection, interferes(Friction)And reach noise elimination effect, also by increasing air-flow flow, reduces stream pressure and flow velocity carrys out noise reduction.

Description

A kind of silencer of exhaust system for motorcycle
Technical field
The present invention relates to motorcycle fields, and in particular to the silencer of exhaust system for motorcycle.
Background technology
Motorcycle air inlet system and exhaust system include air inlet system and exhaust system.On the engine, the portion of gaseous mixture inspiration engine Divide and cry air inlet system, the part for the exhaust gas that burning is over being discharged engine is called exhaust system.Air inlet system includes air cleaner, changes Oily device and air inlet pipe etc..Air flows through carburetor and is mixed with gasoline after air cleaner filters, and enters air inlet discrimination through air inlet pipe Pipe, logical inlet valve enter ignition in engine, generate power.
Exhaust system for motorcycle includes engine and silencer, and the exhaust end of engine is connected with silencer.Silencer is A kind of permission air-flow by by the device of noise attenuation, therefore the quality of Muffler Performance influences the size of motorcycle noise.It is existing There is motorcycle to cause motorcycle idle speed noise big due to vibrations such as engine, vehicle bodies.In order to solve the noise problem of motorcycle, Shen It asks someone to propose a kind of low noise exhaust system for motorcycle, reduces the idling noise of motorcycle, but rub in realization low noise While motorcycle exhaust system, applicant also needs to consider how to design a kind of silencer so that the row of the exhaust end of engine Gas noise reduces.
Invention content
Aiming at the above shortcomings existing in the prior art, patent of the present invention provides a kind of noise elimination of exhaust system for motorcycle Device, for reducing the exhaust noise of the exhaust end of engine.
In order to solve the above technical problems, realizing goal of the invention, the technical solution adopted by the present invention is as follows:
A kind of silencer of exhaust system for motorcycle, including shell, and setting the air inlet pipe in chamber and go out inside the shell Tracheae;Two first partitions being mutually parallel and a second partition are equipped in the inner cavity of the shell successively, inner cavity is divided At first chamber, second chamber, third chamber and the 4th chamber, the first partition is equipped with for being connected to two neighboring chamber Venthole;The air inlet pipe includes straight tube pipeline section and U-tube section, and the inlet end of straight tube pipeline section is pierced by case nose end face and is formed Silencer air inlet;The outlet side of straight tube pipeline section extends to first chamber setting, the inner cavity of straight tube pipeline section from silencer air inlet In be coaxially arranged at least one three-way catalyst, U-tube section one end is connect with the outlet side of straight tube pipeline section, and the other end is from first Chamber passes through second chamber, then is bent and wears back first chamber setting;Further include the first snorkel and the second snorkel, the first ventilation Pipe is stretched into across third chamber in the 4th chamber from second chamber to be arranged;Second snorkel is set from third chamber across the 4th chamber It sets;The escape pipe extends outer casing back end face across the 4th chamber from third chamber and forms silencer exhaust outlet.
As advanced optimizing for said program, the air inlet pipe is located at the straight tube pipeline section in first chamber equipped with logical Hole.
As advanced optimizing for said program, the straight tube pipeline section of the air inlet pipe is inclined in the inner cavity of shell, And the one end being connect with U-tube section in straight tube pipeline section is tilted to the direction far from housing axis.
Further include being fixed in first chamber and second chamber as advanced optimizing for said program, with first chamber With the sound-absorbing cylinder of second chamber coaxial arrangement, staggeredly sound-absorption hole is furnished in the circumferential direction of sound-absorbing cylinder along its length;Sound-absorbing cylinder with It is equipped with acoustical cotton in gap between first chamber inner wall and second chamber inner wall.
As advanced optimizing for said program, the silencer exhaust outlet is bent downwardly extension.
Compared with the prior art, the invention has the advantages that:
Silencer provided by the invention passes through the abrupt change of cross-section and section plug-in type so that exhaust gas enters in these chambers Reflection occurs, interferes(Friction)And reach noise elimination effect, also by increasing air-flow flow, reduce stream pressure and flow velocity Carry out noise reduction.
Description of the drawings
Fig. 1 is the sectional view of the silencer of exhaust system for motorcycle provided by the invention.
Fig. 2 is A-A sectional views in Fig. 1.
Fig. 3 is B-B sectional views in Fig. 1.
Fig. 4 is C-C sectional views in Fig. 1.
Specific implementation mode
With reference to embodiment, the present invention is described in further detail, and embodiments of the present invention are not limited thereto.
Embodiment:
The silencer of exhaust system for motorcycle, as shown in Figs 1-4.Including shell 29, and it is arranged in chamber inside the shell Air inlet pipe 25 and escape pipe 30 are equipped with two first partitions being mutually parallel and one second in the inner cavity of the shell 29 successively Inner cavity is divided into first chamber 21, second chamber 22, third chamber 23 and the 4th chamber 24, in the first partition by partition board Equipped with the venthole 31 for being connected to two neighboring chamber;The air inlet pipe includes straight tube pipeline section and U-tube section, straight tube pipeline section Inlet end is pierced by 29 front end surface of shell and forms silencer air inlet;The outlet side of straight tube pipeline section is extended to from silencer air inlet First chamber 21 is arranged, and at least one three-way catalyst, U-tube section one end and straight tube are coaxially arranged in the inner cavity of straight tube pipeline section The outlet side of pipeline section connects, and the other end passes through second chamber 22 from first chamber 21, then is bent and wears back the setting of first chamber 21;Also Including the first snorkel 27 and the second snorkel 28, the first snorkel 27 stretches into the 4th from second chamber 22 across third chamber 23 Setting in chamber 24;Second snorkel 28 is arranged from third chamber 23 across the 4th chamber 24;The escape pipe 30 is from third chamber Extend outer casing back end face across the 4th chamber 24 and form silencer exhaust outlet in room 23.
Silencer internal structure as shown in Figure 1 is made of two three-way catalysts, three partition boards etc..Off-gas flows from Silencer air inlet enters, and two three-way catalysts are successively passed through after, and the exhaust gas of engine, which has been carried out catalysis reaction, to be reached To discharge standard, trend of the air-flow inside silencer is:
A, the straight tube pipeline section and U-tube section first passed through in air inlet pipe reaches first chamber, and U-tube section increases air-flow stream Journey reduces stream pressure and flow velocity, meanwhile, gas, which is turned, makes gas form harmonic wave in venting channels, significantly reduces Noise.Exhaust gas is expanded in first chamber, and the section of mutation generates reflection or the interference phenomenon of sound wave, reduces the sound to external radiation Can, inhibition is played to the propagation of sound, plays the role of noise reduction.The air inlet pipe 25 is located at the straight tube in first chamber Pipeline section is equipped with through-hole, preferably reduces the back pressure of exhaust system.The straight tube pipeline section of the air inlet pipe 25 is inclined at shell In 29 inner cavity, and the one end being connect with U-tube section in straight tube pipeline section is tilted to the direction far from housing axis.Inclined straight tube Pipeline section larger increases air-flow flow.
B, venthole of the air-flow through first partition shown in Fig. 2 enters second chamber.Venthole in first partition, makes Exhaust gas can be entered in adjacent chamber by these through-holes, can thus reduce the back pressure of exhaust system, reduce exhaust gas By resistance, while improving noise elimination effect.In this step, gas has occurred from section section greatly(First chamber)To small bore (Venthole)Big section is arrived again(Second chamber)The abrupt change of cross-section twice, effectively reduce exhaust noise.When it is implemented, partition board The upper Kong Jun for being passed through for each snorkel extends along the direction that its circumferential direction is pierced by snorkel is equipped with guiding wall, i.e., so that ventilation Pipe is more firmly mounted, while also functioning to guiding snorkel installation, effect easy for installation.
C, by the first snorkel, air-flow is imported into the 4th chamber, during which also occurring can the abrupt change of cross-section twice(Second chamber Into the first snorkel pipe, then to the 4th chamber)And plug in duct(First snorkel)It eliminates the noise, reduces exhaust noise.Together When second chamber air-flow can also pass through the venthole of first partition shown in Fig. 3 import third chamber.
D, by the second snorkel, air-flow is imported into third chamber, during which also occurring can the abrupt change of cross-section twice(4th chamber Into the second snorkel pipe, then arrive third chamber)And plug in duct(Second snorkel)It eliminates the noise, reduces exhaust noise.
E, gas is discharged by escape pipe, in step c-e, air-flow returns third from second chamber to the 4th chamber After chamber, finally it is discharged from the 4th chamber and directly passes through third chamber to be compared from the discharge of the 4th chamber from second chamber with air-flow, Gas has carried out multiple turning in step c-e, and the flow of air-flow is longer, and noise reduction is more preferable.Silencer as shown in Figure 1 is logical Repeatedly cycle is crossed, is finally reached and improves silencer sound quality purpose.
Further include being fixed in first chamber 21 and second chamber 22 in this hush pipe, with first chamber 21 and second chamber The sound-absorbing cylinders of 22 coaxial arrangements, are staggeredly furnished with sound-absorption hole in the circumferential direction of sound-absorbing cylinder along its length;Sound-absorbing cylinder and first chamber Acoustical cotton 26 is equipped in gap between inner wall and second chamber inner wall.Noise elimination hole section, cylinder-like shell and partition board composition are anti- Property acoustic wave filter structure, eliminate exhaust system in mid-frequency noise.Acoustical cotton plays the effect of noise reduction for sound-absorbing.Acoustical cotton can be adopted It is fixed on outer casing inner wall with viscous glutinous or welding mode.
The silencer exhaust outlet is bent downwardly extension.Silencer tail down reduces the contact surface of tail gas and air, It effectively reduces burning again and generates the probability for blowing out abnormal sound, reduce exhaust noise, and escape pipe tail down is conducive to arrange Moisture discharge during putting contributes to the antirust inside silencer cylinder.
Finally illustrate, the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although with reference to compared with Good embodiment describes the invention in detail, it will be understood by those of ordinary skill in the art that, it can be to the skill of the present invention Art scheme is modified or replaced equivalently, and without departing from the objective and range of technical solution of the present invention, should all be covered at this In the right of invention.

Claims (4)

1. a kind of silencer of exhaust system for motorcycle, including shell(29), and the setting air inlet pipe in chamber inside the shell (25)And escape pipe(30);It is characterized in that, the shell(29)Inner cavity in be equipped with successively be mutually parallel two first every Plate and a second partition, first chamber is divided by inner cavity(21), second chamber(22), third chamber(23)With the 4th chamber (24), i.e. first chamber(21)With second chamber(22)Between setting there are one first partition, second chamber(22)With third chamber Room(23)Between be provided with another first partition, third chamber(23)With the 4th chamber(24)Between setting there are one second every Plate is designed with the venthole for being connected to two neighboring chamber in two first partitions(31);The air inlet pipe includes straight Spool piece and U-tube section, the inlet end of straight tube pipeline section are pierced by shell(29)Front end surface forms silencer air inlet;Straight tube pipeline section Outlet side extend to first chamber from silencer air inlet(21)It is arranged, at least one is coaxially arranged in the inner cavity of straight tube pipeline section A three-way catalyst, U-tube section one end are connect with the outlet side of straight tube pipeline section, and the other end is from first chamber(21)Across the second chamber Room(22), then be bent and wear back first chamber(21)Setting;It further include the first snorkel(27)With the second snorkel(28), first is logical Tracheae(27)From second chamber(22)Across third chamber(23)Stretch into the 4th chamber(24)Interior setting;Second snorkel(28)From Third chamber(23)Across the 4th chamber(24)Setting;The escape pipe(30)From third chamber(23)Across the 4th chamber(24) Extend outer casing back end face and forms silencer exhaust outlet;The air inlet pipe(25)It is set on straight tube pipeline section in first chamber There is through-hole.
2. the silencer of exhaust system for motorcycle as described in claim 1, which is characterized in that the air inlet pipe(25)Straight tube Pipeline section is inclined at shell(29)Inner cavity in, and the one end being connect with U-tube section in straight tube pipeline section is to far from housing axis Direction tilt.
3. the silencer of exhaust system for motorcycle as described in claim 1, which is characterized in that further include being fixed on first chamber (21)And second chamber(22)It is interior, with first chamber(21)And second chamber(22)The sound-absorbing cylinder of coaxial arrangement, sound-absorbing cylinder is along it Staggeredly it is furnished with sound-absorption hole in the circumferential direction of length direction;In gap between sound-absorbing cylinder and first chamber inner wall and second chamber inner wall It is equipped with acoustical cotton(26).
4. the silencer of exhaust system for motorcycle as described in claim 1, which is characterized in that the silencer exhaust outlet is downward Bending extends.
CN201610090654.7A 2016-02-18 2016-02-18 A kind of silencer of exhaust system for motorcycle Expired - Fee Related CN105569772B (en)

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CN201610090654.7A CN105569772B (en) 2016-02-18 2016-02-18 A kind of silencer of exhaust system for motorcycle

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Application Number Priority Date Filing Date Title
CN201610090654.7A CN105569772B (en) 2016-02-18 2016-02-18 A kind of silencer of exhaust system for motorcycle

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Publication Number Publication Date
CN105569772A CN105569772A (en) 2016-05-11
CN105569772B true CN105569772B (en) 2018-11-02

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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108952914A (en) * 2018-06-22 2018-12-07 力帆实业(集团)股份有限公司 Exhaust system for motorcycle
CN108981033A (en) * 2018-08-21 2018-12-11 四川健尔莱医疗器械科技有限公司 A kind of low-noise air clarifier
CN109458247A (en) * 2018-10-22 2019-03-12 济南轻骑摩托车有限公司 A kind of special-shaped noise eliminator of motorcycle of large-duty engine
CN110397571B (en) * 2019-08-13 2024-03-08 珠海格力电器股份有限公司 Noise reduction device with disturbing gas pulsation effect and compressor

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Publication number Priority date Publication date Assignee Title
CN2050472U (en) * 1989-08-12 1990-01-03 李源泰 Automotive purifying and silencing apparatus
CN201110210Y (en) * 2007-08-30 2008-09-03 重庆建设摩托车股份有限公司 Engine exhaust silencer
CN201273204Y (en) * 2008-10-13 2009-07-15 远勤山 Cylinder shaped silencer
CN201593453U (en) * 2009-12-21 2010-09-29 重庆隆鑫机车有限公司 Exhaust muffler for motorbike engine
CN202500635U (en) * 2012-02-07 2012-10-24 济南轻骑摩托车有限公司 Motorcycle silencer
JP2013231384A (en) * 2012-04-27 2013-11-14 Yamaha Motor Co Ltd Muffler and saddle-riding type vehicle
CN204402621U (en) * 2014-12-19 2015-06-17 江苏宗申三轮摩托车制造有限公司 Motor tricycle baffler
CN205400853U (en) * 2016-02-18 2016-07-27 力帆实业(集团)股份有限公司 Motorcycle exhaust system's silencer

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