CN201212413Y - Air-cooled engine - Google Patents
Air-cooled engine Download PDFInfo
- Publication number
- CN201212413Y CN201212413Y CNU2008200753612U CN200820075361U CN201212413Y CN 201212413 Y CN201212413 Y CN 201212413Y CN U2008200753612 U CNU2008200753612 U CN U2008200753612U CN 200820075361 U CN200820075361 U CN 200820075361U CN 201212413 Y CN201212413 Y CN 201212413Y
- Authority
- CN
- China
- Prior art keywords
- air
- cooling fan
- overrunning clutch
- wheel device
- free wheel
- 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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- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The utility model discloses an air-cooled engine which comprises an air cylinder body, a crankshaft box and an air guide sleeve. A crankshaft is arranged on the crankshaft box; one end of the crankshaft is provided with a magnetic motor and a cooling fan; the air guide sleeve surrounds the air cylinder body and the magnetic motor and is used for guiding cooled air which is produced by the cooling fan to the peripheral surface of the air cylinder body; and an overrunning clutch is arranged between the magnetic motor and the cooling fan. The overrunning clutch can be a ratchet wheel type unidirectional overrunning clutch, a roller oblique-groove type unidirectional overrunning clutch or a wedge type unidirectional overrunning clutch. The utility model has the advantages that the fan can continue to rotate by the self inertia due to the arrangement of the overrunning clutch when an engine stops running, so the surplus heat after the engine stops running can be cooled.
Description
Technical field
The utility model relates to a kind of motor, particularly a kind of air cooling engine.
Background technique
During engine operation, the maximum combustion temperature in the cylinder is up to more than 2000 ℃, the exhaust gas temperature of discharging also up to 400 ℃～700 ℃.High-temperature fuel gas will make piston, cylinder block, cylinder cap, the temperature of work done parts such as valve sharply raises, if untimely too much heat is taken away, certainly will make the machine oil coking in the motor rotten, oil film is destroyed, and the normal clearance of movement parts disappears, and part be can't stand normal load because of mechanical strength descends to holding, cause parts stuck, machine breakdown.Therefore, in order to guarantee the motor proper functioning, just must cool off motor.The motor that utilizes liquid (for example water or oil) cooling utilizes air to take away the motor of unnecessary heat liquid-cooled engine, is air cooling engine.
Cooling fan and an air guide sleeve that is used for the cold wind guide cylinder external surface of cooling fan generation that the air cooling engine of prior art generally includes a crankcase, is contained in the bent axle on the described crankcase and is arranged on described bent axle one end.That air cooling engine has is simple in structure, in light weight, cost is low, advantage such as aesthetic in appearance, so, popular to people.Forced air cooling is exactly to utilize the fan that turns round with motor to improve the flow velocity of radiating fin place cooling air of flowing through, thereby reaches cooling purpose.Yet, owing to himself structural reason, cooling fan also can shut down, cooling air is stopped during engine stoping operation, and the heat of engine interior is continuing outwards propagation, so that the very fast rising of temperature of motor makes the temperature of suction tude Carburetor rise then, makes and produces vapour lock in the suction tude, cause starting difficulty once more, and cause premature ageings such as rubber parts, the working of plastics distortion on the motor.
The model utility content
The technical problems to be solved in the utility model provides a kind of improved air cooling engine, this air cooling engine can not only be rotated further cooling fan when engine stoping operation and disperse engine interior and continue the outwards heat of propagation, reduce the temperature of motor, and it is simple in structure, in light weight, cost is low, and is aesthetic in appearance.
In order to solve the problems of the technologies described above, the utility model is achieved through the following technical solutions: a kind of air cooling engine, comprise cylinder block, crankcase and air guide sleeve, on the described crankcase bent axle is housed, one end of described bent axle is equipped with magnetogenerator and cooling fan, described air guide sleeve surrounds described cylinder block and magnetogenerator and is used for the cold wind that cooling fan produces is guided into the outer circumferential face of cylinder block, is provided with free wheel device between described magnetogenerator and the cooling fan.
Described free wheel device can be Ratcheting one-way free wheel device, roller chute type mono-directional overrun clutch, unidirectional wedge-typed overrunning clutch.
Compared with prior art; when the utility model stops operating at motor; because the setting of free wheel device is arranged; fan can be rotated further and continue by self inertia provides cooling air to cylinder block; waste heat behind the engine shutdown also is cooled, shuts down the problems that the back temperature rises and produces thereby solved air cooling engine.
Description of drawings
Fig. 1 is the structural representation of a kind of mode of execution of the utility model.
Fig. 2 is the structural representation of the another kind of mode of execution of the utility model.
Fig. 3 is for being positioned at the scheme of installation of magnetogenerator, cooling fan and the free wheel device of bent axle one end among Fig. 1 and Fig. 2.
Fig. 4 is the left view of Fig. 3.
Fig. 5 is the A-A sectional view of Fig. 4.
Embodiment
The utility model is described in more detail below in conjunction with accompanying drawing.
Referring to Fig. 1--Fig. 5, air cooling engine of the present utility model comprises cylinder block 3 and the crankcase 1 that is fixed on these cylinder block 3 bottoms.In the described crankcase 1 bent axle 2 is housed, an end of bent axle 2 is equipped with magnetogenerator 6 and cooling fan 5, and an air guide sleeve 4 that surrounds described cylinder block 3 and magnetogenerator 6 is installed in the outside of described cylinder block 3 and magnetogenerator 6.Be provided with free wheel device 7 between described cooling fan 5 and the magnetogenerator 6.Described free wheel device 7 (unilateral bearing) can be Ratcheting one-way free wheel device, roller chute type mono-directional overrun clutch, unidirectional wedge-typed overrunning clutch.
When described air cooling engine turns round, described cooling fan 5 rotates under the driving of described bent axle 2, its cold wind that rotates generation is through the outer circumferential face of described air guide sleeve 4 rows to described cylinder block 3, at this moment, described cooling fan 5 rotates together in company with described bent axle 2, electromagnetism machine 6, and free wheel device 7 is a locking state; When described air cooling engine stops operating; described bent axle 2 and electromagnetism machine 6 also stop operating; at this moment; described free wheel device 7 is a disengaged condition; the unilateral bearing effect that it has makes it can still rotate and drive described cooling fan 5 voluntarily and rotates; continuation provides cold wind to described cylinder block 3, and the waste heat after described air cooling engine is shut down also is cooled.
Above with reference to accompanying drawing to being illustrated property of air cooling engine of the present utility model description, this description does not have restricted, shown in the accompanying drawing also is embodiment of the present utility model.Should be understood that those skilled in the art can also carry out the modification of various forms to it under the enlightenment of the technical program.Therefore, under the situation that does not depart from the utility model design aim, the conspicuous modification that anyone makes all should drop within the claimed scope of the utility model.
Claims (4)
1. air cooling engine, comprise cylinder block (3), crankcase (1) and air guide sleeve (4), described crankcase (1) is provided with bent axle (2), one end of described bent axle (2) is provided with magnetogenerator (6) and cooling fan (5), described air guide sleeve (4) surrounds described cylinder block (3) and magnetogenerator (6) and is used for the outer circumferential face of guiding the cold wind that described cooling fan (5) produces into described cylinder block (3), it is characterized in that, between described magnetogenerator (6) and the cooling fan (5) free wheel device (7) is housed.
2. air cooling engine according to claim 1 is characterized in that, described free wheel device (7) is the Ratcheting one-way free wheel device.
3. air cooling engine according to claim 1 is characterized in that, described free wheel device (7) is a roller chute type mono-directional overrun clutch.
4. air cooling engine according to claim 1 is characterized in that, described free wheel device (7) is a unidirectional wedge-typed overrunning clutch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200753612U CN201212413Y (en) | 2008-07-16 | 2008-07-16 | Air-cooled engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200753612U CN201212413Y (en) | 2008-07-16 | 2008-07-16 | Air-cooled engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201212413Y true CN201212413Y (en) | 2009-03-25 |
Family
ID=40496583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200753612U Expired - Fee Related CN201212413Y (en) | 2008-07-16 | 2008-07-16 | Air-cooled engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201212413Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102996216A (en) * | 2013-01-04 | 2013-03-27 | 张镤 | Air-cooled internal combustion engine forced cooling device |
-
2008
- 2008-07-16 CN CNU2008200753612U patent/CN201212413Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102996216A (en) * | 2013-01-04 | 2013-03-27 | 张镤 | Air-cooled internal combustion engine forced cooling device |
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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: 20090325 |