CN206801651U - Noise eliminator of motorcycle with exhaust reflection unit - Google Patents
Noise eliminator of motorcycle with exhaust reflection unit Download PDFInfo
- Publication number
- CN206801651U CN206801651U CN201720168422.9U CN201720168422U CN206801651U CN 206801651 U CN206801651 U CN 206801651U CN 201720168422 U CN201720168422 U CN 201720168422U CN 206801651 U CN206801651 U CN 206801651U
- Authority
- CN
- China
- Prior art keywords
- cylinder
- exhaust
- reflection unit
- engine
- motorcycle
- 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
Links
Landscapes
- Exhaust Silencers (AREA)
Abstract
It the utility model is related to a kind of noise eliminator of motorcycle with exhaust reflection unit.A kind of noise eliminator of motorcycle with exhaust reflection unit proposed is with muffler body；The exhaust outlet of muffler body and engine（5）Between be provided with exhaust reflection unit；Exhaust reflection unit has the outer tube for being nested with setting（7）, inner tube（8）；Outer tube（7）By cylinder I（11）With cylinder II（12）Form；Cylinder I（11）One end and engine exhaust outlet（5）Connection, other end connection cylinder II（12）；Inner tube（8）By cylinder III（13）With cylinder IV（14）Form；Cylinder IV（14）With cylinder II（12）Between formed inner and outer pipes annular housing（9）；Cylinder IV（14）Outside wall surface on have and inner and outer pipes annular housing（9）The reflection hole of connection（10）.The utility model effectively solves the difficulty that vehicle space arrangement is postponed outside exhaust reflection unit.
Description
Technical field
A kind of silencer is the utility model is related to, relates generally to a kind of noise eliminator of motorcycle with exhaust reflection unit.
Background technology
At present, during the matching of domestic motorcycle engine, to improve engine different rotating speeds section power, moment of torsion, using starting
Machine air inlet and exhaust back wave principle improve engine power, moment of torsion, typically increase air inlet resonant cavity in air inlet air filter,
Increase exhaust resonator on exhaust silencer, but arrangement and outward appearance demand are limited between by motorcycle air, can not increase resonator, it is special
Be not silencer exhaust resonator arrangement requirement it is more harsh, it is necessary to resonator volume can not be too small, can not be played after too small
The effect of back wave is vented, volume is excessive can not to meet that demand is arranged in vehicle space, start since exhaust reflection unit can improve
Acc power, moment of torsion, therefore must take effective measures and integrate exhaust reflection unit with silencer.
Utility model content
In order to solve the above technical problems, the purpose of this utility model is to propose a kind of motorcycle with exhaust reflection unit
Silencer.
The utility model adopts the following technical scheme that to complete above-mentioned purpose：
A kind of noise eliminator of motorcycle with exhaust reflection unit, described noise eliminator of motorcycle have muffler body；
Exhaust reflection unit is provided between the exhaust outlet of the muffler body and engine；Described exhaust reflection unit has set
The outer tube that installs, inner tube；The outer tube is made up of the cylinder of two sections of different-diameters：Cylinder I and cylinder II；The cylinder I
The exhaust outlet of one end and engine connects, the described cylinder II of other end connection；The diameter of the cylinder II is more than the straight of cylinder I
Footpath；Described inner tube is made up of the cylinder of two sections of different-diameters：Cylinder III and cylinder IV；The external diameter of the cylinder III and the circle
The internal diameter of cylinder I is identical；One end of the cylinder III is located in cylinder I, and is fitted with described cylinder I；The cylinder III
The described cylinder IV of other end connection；The diameter of the cylinder IV is less than the diameter of cylinder III；The cylinder IV and cylinder II it
Between formed to engine breathing reflected gas stream inner and outer pipes annular housing；There is edge described in inner tube in the outside wall surface of cylinder IV
The reflection hole of circumference uniform distribution；The described inner and outer pipes annular housing of described reflection hole connection;When engine operates, waste gas is discharged into
After inner and outer pipes annular housing at reflection hole and described in entrance, engine exhaust port position is reflexed to, is changed according to reflection arc length,
When just being overlapped with exhaust valve closing position at back wave reflexes to vent door, unnecessary waste gas will not enter burning
Room, when exhaust valve is opened, back wave is reflected back silencer by exhaust valve, the waste gas row's allowed along gas inertia in combustion chamber
It is cleaner, allow engine combustion more fully, so as to improve engine power, moment of torsion.
The utility model proposes it is a kind of have exhaust reflection unit noise eliminator of motorcycle, in exhaust muffler for motorcycle
It is middle that exhaust reflection unit is set, engine power, moment of torsion are added, effectively solves and vehicle sky is postponed outside exhaust reflection unit
Between the difficulty arranged.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is Fig. 1 A-A sectional views.
Fig. 3 is use state figure of the present utility model.
Fig. 4 is stand external characteristic curve figure.
Fig. 5 is engine best power, torque curve schematic diagram.
Fig. 6, Fig. 7 are the different engine test bench characteristic change schematic diagrams of experiment reflection hole site.
In figure：1st, air filter, 2, carburetor, 3, air inlet pipe, 4, engine, 5, exhaust valve, 6, exhaust duct, 7, outer tube,
8th, inner tube, 9, inner and outer pipes annular housing, 10, reflection hole, 11, cylinder I, 12, cylinder II, 13, cylinder III, 14, cylinder IV.
Embodiment
The utility model is illustrated with reference to the drawings and specific embodiments：
As shown in Figure 1 and Figure 2, and reference picture 3, a kind of noise eliminator of motorcycle with exhaust reflection unit, described motor
Car silencer has muffler body；Exhaust reflection unit is provided between the exhaust outlet 5 of the muffler body and engine；
Described exhaust reflection unit has outer tube 7, the inner tube 8 for being nested with setting；The outer tube 7 by two sections of different-diameters cylinder structure
Into：Cylinder I 11 and cylinder II 12；One end of the cylinder I 11 and the exhaust outlet 5 of engine connect, described in other end connection
Cylinder II 12；The diameter of the cylinder II 12 is more than the diameter of cylinder I 11；Described inner tube 8 by two sections of different-diameters cylinder
Form：Cylinder III 13 and cylinder IV 14；The external diameter of the cylinder III 13 is identical with the internal diameter of the cylinder I 11；The cylinder III
13 one end is located in cylinder I 11, and is fitted with described cylinder I 11；Described in the other end connection of the cylinder III 13
Cylinder IV 14；The diameter of the cylinder IV 14 is less than the diameter of cylinder III 13；Formed between the cylinder IV 14 and cylinder II 12
To the inner and outer pipes annular housing 9 of engine breathing reflected gas stream；Have described in inner tube in the outside wall surface of cylinder IV 14 along circle
Zhou Junbu reflection hole 10；Described reflection hole 10 connects described inner and outer pipes annular housing 9;When engine operates, waste gas row
After being put at reflection hole and entering described inner and outer pipes annular housing, engine exhaust port position is reflexed to, according to reflection arc length
Change, when just being overlapped with exhaust valve closing position at back wave reflexes to vent door, unnecessary waste gas will not enter
Combustion chamber, when exhaust valve is opened, back wave is reflected back silencer by exhaust valve, the waste gas allowed along gas inertia in combustion chamber
Row's is cleaner, allow engine combustion more fully, so as to improve engine power, moment of torsion.
Engine exhaust principle of reflection explanation：
Overlapped using back wave caused by silencer different length with the exhauxt valve opens time, be advantageous to inertia air-breathing
（The more fresh gaseous mixtures of suction）And the unnecessary waste gas of discharge, so as to improve engine power, such as big positive C50 engines.
Test method：Blank pipe silencer match test is carried out, general to choose 1200mm length blank pipe silencers, internal diameter is chosen
3~5 kinds of schemes, truncation test is carried out afterwards, 50~100mm is blocked once, until all data, it is bent to be carried out EXCEL by 400mm
Graph processing, torque curve trend is analyzed, it is the best region of engine torque typically to have 2-3 region, determines blast pipe afterwards
Diameter, catalyst position, resonator position, blast pipe final position etc., specific content of the test is as shown in figure 4, stand external characteristics is bent
Line：
Exhaust pipe length confirms：
Stand external characteristic curve is analyzed：According to above torque curve figure（Fig. 4）Analysis finds there are two regions pair
It is optimal to answer two 7500rpm~10000rpm when blocking length, respectively 500mm and 900mm, 500mm long
Curve, 4000rpm~7500rpm is best curve when 900mm is long, both be combined for 4000rpm~10000rpm it is optimal
Curve, the experiment is exactly to utilize to be vented back wave principle, it is determined that reflection best region, most preferably bent so as to find out engine test bench characteristic
Line.
Effect is summarized：Engine best power, torque curve are as shown in Figure 5：
Exhaust reflection hole site is different, and engine test bench characteristic is had a great influence, and carries out CG200 reflected engine device cloth
Put, carry out reflecting hole site selection experiment, the different engine test bench characteristics change of experiment reflection hole site is as shown in Figure 6, Figure 7.
Claims (1)
1. a kind of noise eliminator of motorcycle with exhaust reflection unit, described noise eliminator of motorcycle have muffler body；Its
It is characterised by：The exhaust outlet of the muffler body and engine（5）Between be provided with exhaust reflection unit；Described exhaust is anti-
Injection device has the outer tube for being nested with setting（7）, inner tube（8）；The outer tube（7）It is made up of the cylinder of two sections of different-diameters：Cylinder I
（11）With cylinder II（12）；The cylinder I（11）One end and engine exhaust outlet（5）Connection, the other end connect described
Cylinder II（12）；The cylinder II（12）Diameter be more than cylinder I（11）Diameter；Described inner tube（8）It is straight by two sections of differences
The cylinder in footpath is formed：Cylinder III（13）With cylinder IV（14）；The cylinder III（13）External diameter and the cylinder I（11）Internal diameter
It is identical；The cylinder III（13）One end be located at cylinder I（11）It is interior, and with described cylinder I（11）Fit；The cylinder III
（13）The described cylinder IV of other end connection（14）；The cylinder IV（14）Diameter be less than cylinder III（13）Diameter；Institute
State cylinder IV（14）With cylinder II（12）Between formed to engine breathing reflected gas stream inner and outer pipes annular housing（9）；
Cylinder IV described in inner tube（14）Outside wall surface on there is the reflection hole that is uniformly distributed along the circumference（10）；Described reflection hole（10）Connection institute
The inner and outer pipes annular housing stated（9）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720168422.9U CN206801651U (en) | 2017-02-24 | 2017-02-24 | Noise eliminator of motorcycle with exhaust reflection unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720168422.9U CN206801651U (en) | 2017-02-24 | 2017-02-24 | Noise eliminator of motorcycle with exhaust reflection unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206801651U true CN206801651U (en) | 2017-12-26 |
Family
ID=60729093
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720168422.9U Expired - Fee Related CN206801651U (en) | 2017-02-24 | 2017-02-24 | Noise eliminator of motorcycle with exhaust reflection unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206801651U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106640275A (en) * | 2017-02-24 | 2017-05-10 | 洛阳北方易初摩托车有限公司 | Motorcycle silencer with exhausting and reflection device |
-
2017
- 2017-02-24 CN CN201720168422.9U patent/CN206801651U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106640275A (en) * | 2017-02-24 | 2017-05-10 | 洛阳北方易初摩托车有限公司 | Motorcycle silencer with exhausting and reflection device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9341102B2 (en) | Conformal transverse muffler | |
| CN204458126U (en) | A kind of supercharged engine intake noise reduction structure | |
| JP2010185402A (en) | Exhaust passage structure of multi-cylinder engine | |
| US8191676B2 (en) | Resonator for a dual-flow exhaust system | |
| US20100146956A1 (en) | Automotive exhaust system | |
| JP2010185403A (en) | Exhaust gas passage structure for multi-cylinder engine | |
| JP2014227930A (en) | Turbine housing of turbocharger | |
| CN2830654Y (en) | Silencer of impedance combined single-cylinder small general gasoline engine | |
| US20130291500A1 (en) | Air cleaner with integrated resonator | |
| CN206801651U (en) | Noise eliminator of motorcycle with exhaust reflection unit | |
| JP2009013873A (en) | Supercharger | |
| CN201110227Y (en) | Exhaust pipe for automobile silencer as well as silencer for automobile using said exhaust pipe | |
| CN105422337B (en) | A kind of intake muffler | |
| JP5262863B2 (en) | Method and apparatus for controlling exhaust system of multi-cylinder engine | |
| JP2010185401A (en) | Exhaust passage structure of multi-cylinder engine | |
| CN205400853U (en) | Motorcycle exhaust system's silencer | |
| CN205400927U (en) | Motorcycle advances exhaust system | |
| CN201041110Y (en) | Air admission silencing structure of automobile | |
| JP5262862B2 (en) | Method and apparatus for controlling exhaust system of multi-cylinder engine | |
| CN106640275A (en) | Motorcycle silencer with exhausting and reflection device | |
| US6202409B1 (en) | Acoustically-enhanced intake/exhaust system and method for internal combustion engines | |
| CN205841329U (en) | The acoustic filter of turbocharger | |
| CN202417671U (en) | Exhaust pipe with variable built-in valve resistance | |
| CN202117738U (en) | Muffler for diesel engine | |
| CN205805788U (en) | A kind of vehicle, electromotor and air filter thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171226 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |