CN201874631U - Camshaft of small-displacement motorcycle engine - Google Patents
Camshaft of small-displacement motorcycle engine Download PDFInfo
- Publication number
- CN201874631U CN201874631U CN2010206172140U CN201020617214U CN201874631U CN 201874631 U CN201874631 U CN 201874631U CN 2010206172140 U CN2010206172140 U CN 2010206172140U CN 201020617214 U CN201020617214 U CN 201020617214U CN 201874631 U CN201874631 U CN 201874631U
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- Prior art keywords
- camshaft
- engine
- cam
- air inlet
- small
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- 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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Abstract
The utility model relates to camshaft of engines, in particular to a camshaft of a small-displacement motorcycle engine. An air inlet cam and an exhaust cam are arranged on the camshaft, and the included angle alpha between the air inlet cam and the exhaust cam ranges from 110 degrees to 120 degrees. The camshaft can guarantee better air inlet phase and valve motion for the engine, ensures fresh mixed air to enter an engine combustion chamber smoothly, prevents waste gas backflow, realizes smooth air inlet and exhaust, and accordingly improves power performance and economical property of the engine as mixed fuel gas can be sufficiently burned in the engine combustion chamber.
Description
Technical field
The utility model relates to the camshaft of motor, special small-displacement engine of motorcycle camshaft.
Background technique
Camshaft is the strength member in the motorcycle engine distribution device, it is provided with intake cam and exhaust cam, has an angle between intake cam and the exhaust cam, this angle is to the port timing of four stroke engine and the operation decisive role of valve, directly have influence on combination gas in the indoor clean-burning degree of engine combustion, thereby influence the power character and the Economy of motor.Angle design on the existing small-displacement engine of motorcycle camshaft between intake cam and the exhaust cam is not too reasonable, causes combination gas can not be fully burned in that engine combustion is indoor.
Summary of the invention
The purpose of this utility model provides a kind of small-displacement engine of motorcycle camshaft, makes combination gas can be able to abundant burning in that engine combustion is indoor.
Small-displacement engine of motorcycle camshaft described in the utility model, camshaft is provided with intake cam and exhaust cam, and the angle between intake cam and the exhaust cam is 110 °≤a≤120 °.
It is between 110 ° to 120 ° that the utility model is limited to the angle between intake cam and the exhaust cam, can guarantee that motor has preferable air inlet phase and valve motion rule preferably, guarantee that the fresh mix air can enter engine chamber smoothly, prevent that waste gas from flowing backwards, make intake and exhaust unobstructed, combination gas can be able to abundant burning in that engine combustion is indoor, thereby improves engine power performance and Economy.
Description of drawings
Now the utility model is described in further detail in conjunction with the accompanying drawings.
Fig. 1 is the plan view of small-displacement engine of motorcycle camshaft described in the utility model;
Fig. 2 is the left view of Fig. 1.
Embodiment
Mode of execution one:
As depicted in figs. 1 and 2, this small-displacement engine of motorcycle camshaft is provided with intake cam 1 and exhaust cam 2, and the angle between intake cam 1 and the exhaust cam 2 is 110 °.
Mode of execution two:
As depicted in figs. 1 and 2, this small-displacement engine of motorcycle camshaft is provided with intake cam 1 and exhaust cam 2, and the angle between intake cam 1 and the exhaust cam 2 is 120 °.
Mode of execution three:
As depicted in figs. 1 and 2, this small-displacement engine of motorcycle camshaft is provided with intake cam 1 and exhaust cam 2, and the angle between intake cam 1 and the exhaust cam 2 is 115 °.
Claims (1)
1. small-displacement engine of motorcycle camshaft, camshaft is provided with intake cam (1) and exhaust cam (2), it is characterized in that: the angle between intake cam and the exhaust cam is 110 °≤a≤120 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206172140U CN201874631U (en) | 2010-11-17 | 2010-11-17 | Camshaft of small-displacement motorcycle engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206172140U CN201874631U (en) | 2010-11-17 | 2010-11-17 | Camshaft of small-displacement motorcycle engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201874631U true CN201874631U (en) | 2011-06-22 |
Family
ID=44162553
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206172140U Expired - Fee Related CN201874631U (en) | 2010-11-17 | 2010-11-17 | Camshaft of small-displacement motorcycle engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201874631U (en) |
-
2010
- 2010-11-17 CN CN2010206172140U patent/CN201874631U/en not_active Expired - Fee Related
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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: 20110622 Termination date: 20111117 |