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
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CN
China
Prior art keywords
chamber
section
muffler
silencer
pipe
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
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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
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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

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/02—Silencing apparatus characterised by method of silencing by using resonance
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/06—Silencing apparatus characterised by method of silencing by using interference effect
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
    • F01N1/089—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling using two or more expansion chambers in series
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N2210/00—Combination of methods of silencing
    • F01N2210/02—Resonance and interference
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N2210/00—Combination of methods of silencing
    • F01N2210/04—Throttling-expansion and resonance
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N2210/00—Combination of methods of silencing
    • F01N2210/06—Throttling-expansion and interference
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N2230/00—Combination of silencers and other devices
    • F01N2230/04—Catalytic 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)

1.一种摩托车排气系统的消声器，包括外壳（29），以及设置在外壳内腔里的进气管（25）和出气管（30）；其特征在于，所述外壳（29）的内腔中依次设有相互平行的两个第一隔板和一个第二隔板，将内腔分割成第一腔室（21），第二腔室（22），第三腔室（23）和第四腔室（24），即第一腔室（21）与第二腔室（22）之间设置有一个第一隔板，第二腔室（22）与第三腔室（23）之间设置有另一个第一隔板，第三腔室（23）与第四腔室（24）之间设置有一个第二隔板，两个所述第一隔板上都设有用于连通相邻两个腔室的通气孔（31）；所述进气管包括直筒管段和U形管段，直筒管段的进气端穿出外壳（29）前端端面形成消声器进气口；直筒管段的出气端从消声器进气口延伸至第一腔室（21）设置，直筒管段的内腔中同轴设置有至少一个三元催化剂，U形管段一端与直筒管段的出气端连接，另一端从第一腔室（21）穿过第二腔室（22），再弯曲穿回第一腔室（21）设置；还包括第一通气管（27）和第二通气管（28），第一通气管（27）从第二腔室（22）穿过第三腔室（23）伸入第四腔室（24）内设置；第二通气管（28）从第三腔室（23）穿过第四腔室（24）设置；所述出气管（30）从第三腔室（23）穿过第四腔室（24）延伸出外壳后端端面形成消声器排气口；所述进气管（25）位于第一腔室内的直筒管段上设有通孔。1. A muffler for a motorcycle exhaust system, comprising a shell (29), and an air intake pipe (25) and an air outlet pipe (30) arranged in the inner cavity of the shell; it is characterized in that the inner shell (29) Two first partitions and one second partition parallel to each other are arranged in sequence in the cavity, and the inner cavity is divided into a first chamber (21), a second chamber (22), a third chamber (23) and The fourth chamber (24), namely the first chamber (21) and the second chamber (22) is provided with a first partition, between the second chamber (22) and the third chamber (23) There is another first partition between them, a second partition between the third chamber (23) and the fourth chamber (24), and two first partitions are provided for communicating with each other. Adjacent to the air holes (31) of the two chambers; the air inlet pipe includes a straight pipe section and a U-shaped pipe section, and the inlet end of the straight pipe section passes through the front end face of the shell (29) to form a muffler air inlet; the air outlet end of the straight pipe section is from The inlet of the muffler is extended to the first chamber (21). At least one three-way catalyst is coaxially arranged in the inner cavity of the straight pipe section. One end of the U-shaped pipe section is connected to the gas outlet end of the straight pipe section, and the other end is connected to (21) passes through the second chamber (22), and then bends back to the first chamber (21); it also includes the first ventilation tube (27) and the second ventilation tube (28), the first ventilation tube (27 ) from the second chamber (22) through the third chamber (23) into the fourth chamber (24); the second ventilation pipe (28) passes through the fourth chamber from the third chamber (23) The chamber (24) is set; the outlet pipe (30) extends from the third chamber (23) through the fourth chamber (24) to the rear end of the casing to form a muffler exhaust port; the air inlet pipe (25) is located The straight tube section in the first chamber is provided with a through hole. 2.如权利要求1所述的摩托车排气系统的消声器，其特征在于，所述进气管（25）的直筒管段倾斜设置在外壳（29）的内腔中，且直筒管段中与U形管段连接的一端向远离外壳轴线的方向倾斜。2. The muffler of motorcycle exhaust system according to claim 1, characterized in that, the straight tube section of the intake pipe (25) is arranged obliquely in the inner cavity of the casing (29), and the straight tube section is in line with the U-shaped One end connected by the pipe section is inclined away from the axis of the casing. 3.如权利要求1所述的摩托车排气系统的消声器，其特征在于，还包括固定在第一腔室（21）和第二腔室（22）内，与第一腔室（21）和第二腔室（22）同轴设置的吸音筒，吸音筒沿其长度方向的周向上交错布有吸音孔；吸音筒与第一腔室内壁和第二腔室内壁之间的间隙中铺设有吸音棉（26）。3. The muffler of motorcycle exhaust system according to claim 1, characterized in that, it also includes a muffler fixed in the first chamber (21) and the second chamber (22), and the first chamber (21) The sound-absorbing cylinder arranged coaxially with the second chamber (22), the sound-absorbing cylinder is interlaced with sound-absorbing holes along the circumferential direction of its length; the sound-absorbing cylinder is laid in the gap between the inner wall of the first chamber and the inner wall of the second chamber There are sound-absorbing cotton (26). 4.如权利要求1所述的摩托车排气系统的消声器，其特征在于，所述消声器排气口向下弯曲延伸。4. The muffler of the motorcycle exhaust system according to claim 1, characterized in that, the exhaust port of the muffler bends downwards and 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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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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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 and compressor with disruptive gas pulsation effect

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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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