CN2649785Y - Motorcycle exhaust pipe - Google Patents
Motorcycle exhaust pipe Download PDFInfo
- Publication number
- CN2649785Y CN2649785Y CN 200320114571 CN200320114571U CN2649785Y CN 2649785 Y CN2649785 Y CN 2649785Y CN 200320114571 CN200320114571 CN 200320114571 CN 200320114571 U CN200320114571 U CN 200320114571U CN 2649785 Y CN2649785 Y CN 2649785Y
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- CN
- China
- Prior art keywords
- exhaust pipe
- exhaust
- pipe
- engine
- utility
- 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
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- Exhaust Silencers (AREA)
Abstract
The utility model discloses a motorcycle exhaust pipe, and the scheme follows as that the exhaust pipe is divided into a front exhaust pipe and a rear exhaust pipe, wherein a resonator is connected between the front exhaust pipe and the rear exhaust pipe. The utility model has the advantages that the space of the resonator connected on the exhaust pipe has reduced the rapid periodical variation of the pressure of the exhaust gas of the engine, diminished the pressure fluctuation, stabilized the exhaust back pressure of the engine, improved the power of the engine and lowered noises of the exhausting through experiments. The power of the engine with a power of 4-15 (kw) and a rotate speed of 6000-10000 (rotation/minute) has been improved by 3-5 percent, and the exhausting noise has been lowered by 2-3 (dB); the structure of the utility model is simple; the installment and adjustment are convenient; the weight and the production cost are low.
Description
Technical field
The utility model relates to the outlet pipe of motorcycle engine.
Background technique
The exhaust of motorcycle engine in the market all is directly to discharge by outlet pipe, usually the noise during exhaust is bigger, generally need add that silencing apparatus reduces noise at outlet pipe, like this, can produce the big problem of exhaust resistance again, we know that exhaust resistance is little relatively good, but, exhaust resistance is not the smaller the better, exhaust resistance can provide certain exhaust back pressure, the stable exhaust back pressure of different phase or operating mode is only the most favourable engine operation, and exhaust back pressure generally will be complementary with motor, and existing outlet pipe and exhaust mode can not effectively be stablized exhaust back pressure.
The model utility content
The purpose of this utility model is: a kind of motorcycle exhaust pipe is provided, stablizes the engine exhaust back pressure.
In order to achieve the above object, motorcycle exhaust pipe of the present utility model is divided into front exhaust pipe and final vacuum pipe with outlet pipe, is connected with resonant cavity between front exhaust pipe and final vacuum pipe.The rapid cyclically-varying of the exhaust gas pressure of motor has been alleviated in the space of resonant cavity, has reduced the pressure surge scope in the corresponding moment, has stablized the exhaust back pressure of motor.
Above-mentioned front exhaust pipe also is extended with pre-large post-small expansion tube in resonant cavity.Expansion tube can reduce exhaust resistance, and reduces exhaust sound, simultaneously, also further stablizes the engine exhaust back pressure.
Above-mentioned resonant cavity can be cylindrical shape.Front exhaust pipe is connected with motor, and the final vacuum pipe is connected with silencing apparatus.Enter silencing apparatus again behind the expansion tube of the waste gas process outlet pipe of motor and the resonant cavity, discharge at last.
The utility model has the advantages that: be connected with resonant cavity by adopting on the outlet pipe, utilize the space of resonant cavity to alleviate the rapid cyclically-varying of the exhaust gas pressure of motor, reduce pressure surge, stablized the engine exhaust back pressure, engine power is improved, can also reduce exhaust sound; Through overtesting power 4-15kw, rotating speed 6000-10000 rev/min engine power improves about 3-5%, and exhaust sound reduces 2-3dB; Simultaneously simple in structure, be convenient to install adjust, in light weight, cost is low.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is the structural representation of motorcycle exhaust pipe of the present utility model.
Embodiment
Referring to accompanying drawing 1, motorcycle exhaust pipe of the present utility model is divided into front exhaust pipe 1 and final vacuum pipe 2 with outlet pipe, is connected with resonant cavity 3 between front exhaust pipe 1 and final vacuum pipe 2; Resonant cavity 3 is a cylindrical shape, one end face of cylinder has welded final vacuum pipe 2, and front exhaust pipe 1 has been welded in the other end of cylinder, and the rapid cyclically-varying of the exhaust gas pressure of motor has been alleviated in the space of resonant cavity 3, reduce the pressure surge scope in the corresponding moment, stablized the engine exhaust back pressure; The welding that front exhaust pipe 1 extends in resonant cavity 3 one section pre-large post-small expansion tube 4; Expansion tube 4 is the pipe of one section frustoconic shape, and the small end bore is identical with front exhaust pipe 1 internal diameter, and the large port footpath is greater than front exhaust pipe 1 internal diameter, and expansion tube 4 is completely contained in the resonant cavity 3; Expansion tube 4 is used to reduce exhaust resistance, and reduces exhaust sound, simultaneously, also further stablizes the engine exhaust back pressure; Front exhaust pipe 1 is connected with motor, and final vacuum pipe 2 is connected with silencing apparatus 5.Enter silencing apparatus 5 again behind the waste gas process resonant cavity 3 of motor and the expansion tube 4, discharge at last.
Claims (4)
1. a motorcycle exhaust pipe comprises outlet pipe, it is characterized in that: described outlet pipe is divided into front exhaust pipe (1) and final vacuum pipe (2), is connected with resonant cavity (3) between front exhaust pipe (1) and the final vacuum pipe (2).
2. motorcycle exhaust pipe according to claim 1 is characterized in that: described front exhaust pipe (1) also is extended with pre-large post-small expansion tube (4) in resonant cavity (3).
3. motorcycle exhaust pipe according to claim 1 and 2 is characterized in that: described resonant cavity (3) is a cylindrical shape.
4. motorcycle exhaust pipe according to claim 1 and 2 is characterized in that: described front exhaust pipe (1) is connected with motor, and final vacuum pipe (2) is connected with silencing apparatus (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320114571 CN2649785Y (en) | 2003-11-10 | 2003-11-10 | Motorcycle exhaust pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320114571 CN2649785Y (en) | 2003-11-10 | 2003-11-10 | Motorcycle exhaust pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2649785Y true CN2649785Y (en) | 2004-10-20 |
Family
ID=34345438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320114571 Expired - Fee Related CN2649785Y (en) | 2003-11-10 | 2003-11-10 | Motorcycle exhaust pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2649785Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2011265377B2 (en) * | 2011-01-26 | 2013-11-28 | Honda Motor Co., Ltd. | Motorcycle exhaust system structure |
| CN101699043B (en) * | 2006-12-20 | 2014-05-07 | 雅马哈发动机株式会社 | Exhaust device for four cycle engine |
-
2003
- 2003-11-10 CN CN 200320114571 patent/CN2649785Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101699043B (en) * | 2006-12-20 | 2014-05-07 | 雅马哈发动机株式会社 | Exhaust device for four cycle engine |
| AU2011265377B2 (en) * | 2011-01-26 | 2013-11-28 | Honda Motor Co., Ltd. | Motorcycle exhaust system structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20041020 Termination date: 20091210 |