CN204552950U - Small two-stroke petrol engine automatic speed governing device - Google Patents
Small two-stroke petrol engine automatic speed governing device Download PDFInfo
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- CN204552950U CN204552950U CN201520281476.7U CN201520281476U CN204552950U CN 204552950 U CN204552950 U CN 204552950U CN 201520281476 U CN201520281476 U CN 201520281476U CN 204552950 U CN204552950 U CN 204552950U
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Abstract
The utility model is created and is disclosed a kind of small two-stroke petrol engine automatic speed governing device, comprise Carburetor (1), speed-adjustable motor (3), circuit controller (4), motor (5), flywheel and magnetogenerator (6), engine high pressure bag (7), speed-adjustable motor (3) is fixed on Carburetor (1) by mounting bracket (2), the described engine rotational speed signal being arranged on flywheel on motor (5) bent axle and magnetogenerator (6) is transferred to circuit controller (4), circuit controller (4) exports speed-adjustable motor turn signal more afterwards with setting speed, make speed-adjustable motor (3) forward or reverse, Carburetor (1) accelerator open degree drives at speed-adjustable motor (3) and opens or closes several angle, the change of Carburetor (1) accelerator open degree controls motor (5) rotating speed, make the constant speed work under setting speed of motor (5) rotating speed.Adopt after said structure, have simple and reasonable, easy for operation, automatically to adjust according to setting speed engine speed, safe and reliable to operation, the advantage such as the U.S. and European Union Emission requirement can be reached.
Description
Technical field
The invention relates to a kind of small two-stroke petrol engine, and particularly a kind of power supply automatic control oil device accelerator open degree utilizing engine high pressure to contract for fixed output quotas raw reaches the small two-stroke petrol engine automatic speed governing device of automatic speed regulation.
Background technique
The features such as small two-stroke petrol engine is large with its output power as a kind of power plant, structure simple, it is light to operate, low price, are widely used in the equipment such as mowing machine, brush cutter, trimmer, microtilling machine, loosenning tiller, planting machine, gasoline saw.But due to the restriction of self structure, small two-stroke petrol engine fuel utilization ratio is low, there is the oil gas of quite a few not burn or burn and to be insufficiently just discharged away, cause the HC (hydrocarbon) containing quite a few in tail gas.
Along with the U.S. and the raising step by step of European Union Emission regulation in recent years, severe requirement is proposed to the petrolic development of small two-stroke.Want reduced exhaust, one will improve air fuel ratio exactly.And too high air fuel ratio must cause the raising of motor no-load speed.The serviceability of too high rotating speed to each component has a great impact, thus affects the life-span of overall engine.Thus develop a kind of can when air fuel ratio improves, the device of the limiting engine rotating speed of intelligence is the difficult problem in current industry.For this reason, many manufacturers, scientific research institutions and knowledgeable people develop specially and develop, but not yet have comparatively ideal product to emerge so far.
Summary of the invention
For overcoming the problems referred to above that existing small two-stroke petrol engine exists, the object of the invention be to provide a kind of simple and reasonable, easy for operation, automatically to adjust according to setting speed engine speed, safe and reliable to operation, the small two-stroke petrol engine automatic speed governing device that the U.S. and European Union Emission require can be reached.
The invention solves the problems of the technologies described above adopted technological scheme, it comprises Carburetor, speed-adjustable motor, circuit controller, motor, flywheel and magnetogenerator, engine high pressure bag, speed-adjustable motor is fixed on Carburetor by mounting bracket, the described engine rotational speed signal being arranged on flywheel on engine crankshaft and magnetogenerator is transferred to circuit controller, circuit controller and setting speed export speed-adjustable motor turn signal more afterwards, make speed-adjustable motor forward or reverse, Carburetor accelerator open degree drives at speed-adjustable motor and opens or closes several angle, the change of Carburetor accelerator open degree controls engine speed, make engine speed constant speed work under setting speed.
The further scheme of the invention, described Carburetor adopts butterfly valve type Carburetor or rotary valve type carburetor.
The further scheme of the invention, the rotating shaft of described speed-adjustable motor is connected with the rotary valve shaft of rotary valve type carburetor, and the rotating shaft sense of rotation of speed-adjustable motor and the rotary valve shaft sense of rotation of rotary valve type carburetor are in the same way.
The further scheme of the invention, the rotating shaft of described speed-adjustable motor is connected with the throttle plate pin of butterfly valve type Carburetor, and the rotating shaft sense of rotation of speed-adjustable motor and the closure sense of rotation of butterfly valve type Carburetor are in the same way.
The further scheme of the invention, described circuit controller is connected between engine high pressure bag and speed-adjustable motor, and the working power of circuit controller is provided by engine high pressure bag.
After adopting said structure, compared with prior art have the following advantages: the method that existing technology is general adopts the mode of artificial mechanism to control Carburetor open closed, after pressing trigger, throttle is just opened completely, unclamp trigger, throttle is just completely closed, cannot carry out real-time adjustment to engine speed.And adopt the invention just engine control can be worked under reasonable and desirable rotating speed, when in order to reach the U.S. and European Union Emission requirement and improve air fuel ratio, effectively can control motor to work under desirable rotating speed, thus reliability and the working life of engine component can be increased.
Accompanying drawing explanation
Structural representation when Fig. 1 is the invention employing rotary valve type carburetor.
Structural representation when Fig. 2 is the invention employing butterfly valve type Carburetor.
Fig. 3 is the invention control principle block diagram.
Wherein 1 Carburetor, 2 mounting brackets, 3 speed-adjustable motors, 4 circuit controllers, 5 motors, 6 flywheels and magnetogenerator, 7 engine high pressure bags.
Embodiment
Shown in Fig. 1 to Fig. 3, for the specific embodiments of a kind of small two-stroke petrol engine of the invention automatic speed governing device, it comprises Carburetor 1, speed-adjustable motor 3, circuit controller 4, motor 5, flywheel and magnetogenerator 6, engine high pressure bag 7, speed-adjustable motor 3 is fixed on Carburetor 1 by mounting bracket 2, the described engine rotational speed signal being arranged on flywheel on motor 5 bent axle and magnetogenerator 6 is transferred to circuit controller 4, circuit controller 4 and setting speed export speed-adjustable motor turn signal more afterwards, make speed-adjustable motor 3 forward or reverse, Carburetor 1 accelerator open degree drives at speed-adjustable motor 3 and opens or closes several angle, the change of Carburetor 1 accelerator open degree controls motor 5 rotating speed, make the constant speed work under setting speed of motor 5 rotating speed.Described circuit controller 4 is connected between engine high pressure bag 7 and speed-adjustable motor 3, and the working power of circuit controller 4 is provided by engine high pressure bag 7.
When described Carburetor 1 adopts rotary valve type carburetor, the described rotating shaft of speed-adjustable motor 3 is connected with the rotary valve shaft of rotary valve type carburetor, and the rotating shaft sense of rotation of speed-adjustable motor 3 and the rotary valve shaft sense of rotation of rotary valve type carburetor are in the same way.
When described Carburetor 1 adopts butterfly valve type Carburetor, the rotating shaft of described speed-adjustable motor 3 is connected with the throttle plate pin of butterfly valve type Carburetor, and the rotating shaft sense of rotation of speed-adjustable motor 3 and the closure sense of rotation of butterfly valve type Carburetor are in the same way.
The invention mode of execution is as follows, is first circuit controller 4 setting speed, then ato unit 5, makes it idle.During normal work, open switch and speed-adjustable motor 3 is operated, open Carburetor 1 air door and motor 5 is run up.Be arranged on flywheel on motor 5 bent axle and magnetogenerator 6 often to transport to circle and make engine high pressure bag 7 light a fire once, this engine speed signal is transferred to circuit controller 4 compare with setting speed, judge through circuit controller 4, rotating speed too low or too high time, circuit controller 4 sends speed-adjustable motor turn signal and controls speed-adjustable motor 3, make speed-adjustable motor 3 clockwise or be rotated counterclockwise certain angle, Carburetor 1 accelerator open degree drives at speed-adjustable motor 3 and opens or closes several angle.When Carburetor 1 throttle is opened, mixed gas air inflow rises, and motor 5 rotating speed raises; When Carburetor 1 throttle is closed, mixed gas air inflow declines, and motor 5 rotating speed reduces.In whole working procedure, circuit controller 4 pairs of motor 1 rotating speeds carry out Real-Time Monitoring, and feed back in time, and automatically controlled engine 5 is constant speed work under setting speed.
The above; just an embodiment of the invention, not makes any pro forma restriction, on the technological scheme basis not departing from the invention to the invention; done simple modification, equivalent variations or modification, all fall into the protection domain of the invention.
Claims (5)
1. a small two-stroke petrol engine automatic speed governing device, comprise Carburetor (1), speed-adjustable motor (3), circuit controller (4), motor (5), flywheel and magnetogenerator (6), engine high pressure bag (7), speed-adjustable motor (3) is fixed on Carburetor (1) by mounting bracket (2), it is characterized in that: described in be arranged on flywheel on motor (5) bent axle and magnetogenerator (6) engine rotational speed signal be transferred to circuit controller (4), circuit controller (4) exports speed-adjustable motor turn signal more afterwards with setting speed, make speed-adjustable motor (3) forward or reverse, Carburetor (1) accelerator open degree drives at speed-adjustable motor (3) and opens or closes several angle, the change of Carburetor (1) accelerator open degree controls motor (5) rotating speed, make the constant speed work under setting speed of motor (5) rotating speed.
2. small two-stroke petrol engine automatic speed governing device according to claim 1, is characterized in that: described Carburetor (1) adopts rotary valve type carburetor or butterfly valve type Carburetor.
3. small two-stroke petrol engine automatic speed governing device according to claim 2, it is characterized in that: the rotating shaft of described speed-adjustable motor (3) is connected with the rotary valve shaft of rotary valve type carburetor, the rotating shaft sense of rotation of speed-adjustable motor (3) and the rotary valve shaft sense of rotation of rotary valve type carburetor are in the same way.
4. small two-stroke petrol engine automatic speed governing device according to claim 2, it is characterized in that: the rotating shaft of described speed-adjustable motor (3) is connected with the throttle plate pin of butterfly valve type Carburetor, the rotating shaft sense of rotation of speed-adjustable motor (3) and the closure sense of rotation of butterfly valve type Carburetor are in the same way.
5. the small two-stroke petrol engine automatic speed governing device according to claim 3 or 4, it is characterized in that: described circuit controller (4) is connected between engine high pressure bag (7) and speed-adjustable motor (3), the working power of circuit controller (4) is provided by engine high pressure bag (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520281476.7U CN204552950U (en) | 2015-05-05 | 2015-05-05 | Small two-stroke petrol engine automatic speed governing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520281476.7U CN204552950U (en) | 2015-05-05 | 2015-05-05 | Small two-stroke petrol engine automatic speed governing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204552950U true CN204552950U (en) | 2015-08-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520281476.7U Active CN204552950U (en) | 2015-05-05 | 2015-05-05 | Small two-stroke petrol engine automatic speed governing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204552950U (en) |
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2015
- 2015-05-05 CN CN201520281476.7U patent/CN204552950U/en active Active
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| GR01 | Patent grant |