CN201053354Y - Small-sized petrol engine speed-adjusting device - Google Patents
Small-sized petrol engine speed-adjusting device Download PDFInfo
- Publication number
- CN201053354Y CN201053354Y CNU2007200385620U CN200720038562U CN201053354Y CN 201053354 Y CN201053354 Y CN 201053354Y CN U2007200385620 U CNU2007200385620 U CN U2007200385620U CN 200720038562 U CN200720038562 U CN 200720038562U CN 201053354 Y CN201053354 Y CN 201053354Y
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- CN
- China
- Prior art keywords
- vacuum film
- utility
- suction tude
- gasoline engine
- communicates
- 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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Abstract
The utility model provides a speed governing device for a miniature gasoline engine, comprising an air inlet pipe, an air throttle and a return spring, wherein, an air tap is arranged on one side of the air inlet pipe and communicated with a cavity body in a shell; a vacuum membrane is arranged inside the cavity body of the shell; one surface of the vacuum membrane is communicated with the air inlet pipe and the other surface of the vacuum membrane is communicated with atmosphere; the surface communicating with the atmosphere is connected with one end of a steering rope; the other end of the steering rope is connected with the air throttle. The utility model utilizes negative pressure change in the air inlet pipe to automatically control the rotary speed of the engine, thereby the utility model has no need for manual operation, simple structure and reliable work.
Description
Technical field
The utility model relates to a kind of miniature gasoline engine, particularly a kind of miniature gasoline engine that utilizes the Carburetor fuel feeding.
Background technique
Miniature gasoline engine is mainly used on graden machine, the generator set, and rotating speed remains unchanged substantially when requiring work, and output torque is stable.Typical speed regulating mechanism has electronic type speed regulating mechanism, blade type speed regulating mechanism, and the two all is to utilize the change in rotational speed of engine output shaft to control the aperture of closure, and by contrast, the electronic type speed regulating mechanism is highly sensitive, but the cost height; Blade type speed regulating mechanism complex structure, poor stability.
Summary of the invention
Goal of the invention: the utility model is at the deficiencies in the prior art, proposes a kind of miniature gasoline engine throttle adjustment mechanism.This mechanism utilizes intake pipe negative pressure to change, and regulates the petrol engine running speed automatically, and is simple in structure, and work is sensitive reliable.
Technological scheme: speed adjusting gear of minitype gasoline engine described in the utility model, comprise suction tude, closure and return spring, it is characterized in that being provided with a valve in a side of suction tude, cavity in this valve and the housing communicates, be provided with a vacuum film in the cavity of housing, the one side of this vacuum film communicates with suction tude, and another side communicates with atmosphere, one side at the vacuum film that communicates with atmosphere is connected with an end of handling rope, and the other end of manipulation rope is connected with closure.
For tensioning and stable vacuum film, between the inwall of the one side of vacuum film and cavity, be provided with pressure spring.
Move past in the journey in order to prevent that vacuum film is on the throne, particularly prevent the extruding of pressure spring and damage vacuum film, be provided with a card in the centre of vacuum film, this card can make vacuum film better experience the thrust of pressure spring simultaneously.
Working principle of the present utility model is: by vacuum film is set, its one side communicates with suction tude, and another side communicates with atmosphere, film in suction tude negative pressure and the acting in conjunction of atmospheric pressure under be subjected to displacement.Vacuum film is on the throne to be moved past in the journey, regulates the throttle opening size by drive handling cable wire, thereby petrol engine rotational speed is controlled in the constant scope.
Beneficial effect: the utility model compared with prior art, its remarkable advantage is: the motor that the above-mentioned speed regulating mechanism of the utility model is installed, need not manually-operable, utilize the fluctuation of suction tude internal pressure to regulate the throttle opening size, thereby keep engine speed stable, stable working, noise is little, and simple in structure, reliable operation.
Description of drawings
Fig. 1 is a structural representation of the present utility model, is the motor normal working, and closure is half-open.
Fig. 2 is a petrol engine outage state controller composition, WOT.
Embodiment
As shown in the figure, the speed adjusting gear of minitype gasoline engine of the utility model design comprises: suction tude 1, closure 2, return spring 3, valve 4, housing 5, vacuum film 6, manipulation rope 7, pressure spring 8 and card 9.
Wherein suction tude 1, closure 2, return spring 3 belong to the parts of existing petrol engine.
Its working principle is: referring to Fig. 2, when petrol engine was in outage state, closure is standard-sized sheet under the effect of return spring, and under this state, negative pressure is zero in the suction tude.Referring to Fig. 1, under starting state, produce negative pressure in the suction tude, vacuum film is attracted to suction tude, and the manipulation rope on the film is dragged, and drives the closure rotation, makes it be parked in the desired position, and keeps stabilization of speed.At work, when external load increased, petrol engine rotational speed descended, and degree of vacuum reduces in the suction tude, and pressure spring promotes vacuum film, handled rope and unclamped, and closure is opened under the effect of return spring greatly, and petrol engine rotational speed rises; When the petrol engine rotational speed rising, degree of vacuum increases in the suction tude, and the elastic force that vacuum film overcomes pressure spring moves, drive to handle rope, and then the rotation of drive closure, petrol engine rotational speed is descended.
Claims (4)
1. speed adjusting gear of minitype gasoline engine, comprise suction tude (1), closure (2) and return spring (3), it is characterized in that being provided with a valve (4) in a side of suction tude (1), cavity in this valve (4) and the housing (5) communicates, in the cavity of housing (5), be provided with a vacuum film (6), the one side of this vacuum film (6) communicates with suction tude, another side communicates with atmosphere, one side at the vacuum film that communicates with atmosphere is connected with an end of handling rope (7), and the other end of manipulation rope (7) is connected with closure (2).
2. speed adjusting gear of minitype gasoline engine according to claim 1 is characterized in that being provided with pressure spring (8) between the inwall of the one side of vacuum film (6) and cavity.
3. speed adjusting gear of minitype gasoline engine according to claim 1 and 2 is characterized in that being provided with a card (9) in the centre of vacuum film (6)
4. speed adjusting gear of minitype gasoline engine according to claim 1 and 2 is characterized in that the outer ring of vacuum film is thicker sealing strip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200385620U CN201053354Y (en) | 2007-07-13 | 2007-07-13 | Small-sized petrol engine speed-adjusting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200385620U CN201053354Y (en) | 2007-07-13 | 2007-07-13 | Small-sized petrol engine speed-adjusting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201053354Y true CN201053354Y (en) | 2008-04-30 |
Family
ID=39393017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200385620U Expired - Fee Related CN201053354Y (en) | 2007-07-13 | 2007-07-13 | Small-sized petrol engine speed-adjusting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201053354Y (en) |
-
2007
- 2007-07-13 CN CNU2007200385620U patent/CN201053354Y/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 | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Jincheng Group Co. Ltd. Assignor: Nanjing Jincheng Machinery Co., Ltd. Contract fulfillment period: 2009.5.7 to 2014.5.7 Contract record no.: 2009320000847 Denomination of utility model: Speed adjusting gear of minitype gasoline engine Granted publication date: 20080430 License type: Exclusive license Record date: 20090513 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2009.5.7 TO 2014.5.7; CHANGE OF CONTRACT Name of requester: JINCHENG GROUP CO.,LTD. Effective date: 20090513 |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080430 Termination date: 20110713 |