CN104912693A - Digital intelligent accelerator control system of small gasoline engine - Google Patents
Digital intelligent accelerator control system of small gasoline engine Download PDFInfo
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- CN104912693A CN104912693A CN201510337607.3A CN201510337607A CN104912693A CN 104912693 A CN104912693 A CN 104912693A CN 201510337607 A CN201510337607 A CN 201510337607A CN 104912693 A CN104912693 A CN 104912693A
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Abstract
The invention discloses a digital intelligent accelerator control system of a small gasoline engine. The digital intelligent accelerator control system comprises an engine speed detection unit, an accelerator trigger signal unit, a power supply processing unit, a high-voltage ignition unit, a drive unit, a power supply system unit, a drive motor module, a stepping motor, a carburetor, a sparking plug and an MCU. The engine speed can be automatically adjusted through the system according to loads, and when the engine speed is too high, the MCU will drive the motor to automatically control the throttle percentage for speed limiting. The accelerator control system can automatically adjust the ignition advance angle for any engine speed, the purpose of reducing power is realized at a high-speed speed limiting point by reducing the throttle percentage, when the accelerator control system works at the speed point, engine ignition is normal, oil consumption is low, discharge is good, and speed limiting is stable and reliable under the feedback control of the MCU.
Description
Technical field
The present invention relates to technology of gasoline engine field, specifically a kind of miniature gasoline engine digital intelligent throttle control system.
Background technique
Put-put owing to having compact structure, volume is little, quality is light, running speed-raising many remarkable advantages such as fast are widely used in many product scopes such as agricultural, forestry, gardening, family.But when the load decreases, engine speed can reach more than 13000 turns, this is very large to the wearing and tearing of motor and facility, may cause personal injury in addition to operator, therefore carries out speed limit to motor and is necessary.
At present generally by cutoff speed limit or move back angle speed limit magnetogenerator and realize speed limit, which is in the direct cutoff of speed limit point rotating speed or changes ignition advance angle, make engine interior mixed gas can not normally perfect combustion, power drop, engine speed reduces, reach the object of speed limit, but along with adding of emission limit is tight, when motor dispatches from the factory, supplying oil of carburetor amount turns down, which speed limit is adopted to there will be rotary speed unstabilization fixed, fluctuated, even can limit incessantly at all, run at a high speed, do not have the effect of speed limit, the speed limit mode of direct cutoff even there will be the danger of catalyst baffler appearance blast, and adopt this two kinds of mode speed limits, engine combustion all can be insufficient, cause engine temperature higher, deterioration of emission, excessive oil consumption, also there will be the phenomenon that engine vibration is large, operator is used very uncomfortable, rotating speed runs the blast of high or baffler and also easily causes personal injury.
Therefore, concerning numerous users, research and development a kind of reasonable in design, control accurately, fuel-economizing, exhaust emissions are good, use more reliable method for limiting speed to be significantly.
Summary of the invention
The present invention is directed to above problem, provide a kind of miniature gasoline engine digital intelligent throttle control system, igniter and Carburetor are combined, the throttle opening being controlled Carburetor by the tach signal of collection point firearm, to reach the adjustment regulating the object of supplying oil of carburetor amount to realize engine speed, avoids the too high machine breakdown that causes of engine speed and personal injury.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of miniature gasoline engine digital intelligent throttle control system, this control system comprises engine speed detecting unit, throttle trigger signal element, power supply processing unit, high voltage ignition unit, driver element, power supply system unit, drive motor module, stepper motor, Carburetor, spark plug and MCU procedure control unit;
Described rotation speed detection unit, for detecting sensor or the trigger winding of engine speed;
Described throttle trigger signal element, for detecting the signal element of manually operated trigger aperture;
Described power supply processing unit, for the confession electric treatment of MCU procedure control unit, driver element and high voltage ignition unit;
Described high voltage ignition unit, for generation of instantaneous pressure, lights inflammable mixture by spark-discharge;
Described driver element, accepts MCU order-driven stepper motor;
Described stepper motor, for controlling carburetor throttle opening;
Described Carburetor, for providing suitable inflammable mixture to motor;
Described spark plug, for lighting inflammable mixture in the electric discharge of suitable time of ignition;
Described MCU procedure control unit, for receiving engine speed and throttle trigger signal, follow and calculate according to internal processes, by being arranged on the aperture of the step motor control carburetor throttle on described Carburetor by driver element circuit and drive motor module drive, thus control the amount of the inflammable mixture of Carburetor, regulate the rotating speed of motor;
Described throttle trigger signal element is potentiometer, is arranged in the rotating shaft of throttle trigger; Described MCU procedure control unit, rotation speed detection unit, driver element, high voltage ignition unit, power supply system unit, power supply processing unit and drive motor module installation are inner at igniter case;
Described Carburetor is plunger piston carburetor or butterfly valve Carburetor, and described stepper motor is arranged on the top of the plunger of described plunger piston carburetor, and described stepper motor is arranged on one end of the closure rotating shaft of described butterfly valve Carburetor;
Described MCU procedure control unit adopts digital microcontroller to control; Described MCU procedure control unit internal processes sets following parameter: the maximum rotation angle parameter of engine idle rotational range parameter, engine peak speed range parameter, described stepper motor, described throttle trigger signal element angular displacement and the corresponding relation parameter of described stepper motor angular displacement, the ignition advance angle parameter of curve of described igniter, makes it meet the optimum igniting position of motor under different rotating speeds.
When throttle trigger is not having under the state depressed, MCU procedure control unit default engine is in idling mode, engine rotational speed signal is sent into MCU procedure control unit by rotation speed detection unit, prescribe a time limit when engine speed is greater than on setting idle speed value, MCU procedure control unit sends signal, reduced the aperture of carburetor throttle by the stepper motor on driver element circuit and drive motor module drive Carburetor, reduce the amount of the inflammable mixture of Carburetor, engine speed declines; Prescribe a time limit when engine speed is less than on setting idle speed value, MCU procedure control unit sends signal, stepper motor on drive motor module drive Carburetor, increase the aperture of carburetor throttle, increase the amount of the inflammable mixture of Carburetor, engine speed rises, and the rotating speed of motor is maintained in the speed range of regulation.
When pressing Throttle Opening Control trigger, the potentiometer resistance being arranged on trigger knob signal element changes, and according to the aperture of the Angular displacement control carburetor throttle of the stepper motor of MCU procedure control unit internal processes setting, controls the normal operation of motor.
When Throttle Opening Control trigger is pressed into the end, carburetor throttle standard-sized sheet, if now load is comparatively large, engine speed operates below maximum speed, then stepper motor is in maximum angle of rotation place always, carburetor throttle full-gear; If now load is less, engine speed exceedes the maximum speed of setting, then MCU procedure control unit sends signal, stepper motor on drive motor module drive Carburetor reduces the aperture of carburetor throttle, reduce the amount of the inflammable mixture of Carburetor, engine speed declines, and reaches the object of speed limit.
The throttle control system of digital intelligent of the present invention is owing to taking above structure, igniter and Carburetor are combined, the throttle opening of Carburetor is controlled to reach the adjustment regulating the object of supplying oil of carburetor amount to realize engine speed by the tach signal of collection point firearm, when engine speed reaches the highest control rotating speed, reduce carburetor throttle, reduce supplying oil of carburetor amount, the output torque of motor reduces, rotating speed declines, thus avoids damage and the personal injuries such as the too high machine scuffing of cylinder bore caused of engine speed.Compared with prior art, the throttle control system of a kind of digital intelligent of the present invention have reasonable in design, control accurately, fuel-economizing, exhaust emissions is good, Security is high feature.
Accompanying drawing explanation
Fig. 1 is miniature gasoline engine digital intelligent throttle control system schematic diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is elaborated:
In figure: 1, throttle trigger signal element; 2, rotation speed detection unit; 3, MCU procedure control unit; 4, driver element; 5, high voltage ignition unit; 6, power supply system unit; 7, power supply processing unit; 8, drive motor module; 9, stepper motor; 10, Carburetor; 11, spark plug.
As shown in Figure 1, in this system, throttle trigger signal element 1 is set in the rotating shaft of throttle trigger, this signal element is generally potentiometer, instead of traditional throttle rope, and the resistance value changed in circuit by the rotation process of throttle trigger is supplied to MCU procedure control unit 3 load signal; MCU procedure control unit 3, rotation speed detection unit 2, driver element 4, high voltage ignition unit 5, power supply system unit 6, power supply processing unit 7 and drive motor module 8 are set in igniter case inside; Carburetor 10 arranges stepper motor 9.
First, following setting parameter is carried out to MCU procedure control unit 3 internal program:
Set engine idle rotational to turn as (N1 ± 200);
Set engine peak speed to turn as (N2 ± 200);
The maximum angle of rotation of setting stepper motor;
The corresponding relation of setting throttle trigger signal element 1 angular displacement and stepper motor 9 angular displacement;
The electronic spark advance angular curve of set point firearm, makes it meet the optimum igniting position of motor under different rotating speeds.
Working procedure is as follows:
Ato unit, when throttle trigger is not having under the state depressed, MCU procedure control unit 3 default engine is in idling mode, engine rotational speed signal is sent into MCU procedure control unit 3 by rotation speed detection unit, when engine speed be greater than setting the idle speed value upper limit (N1+200) turn time, MCU procedure control unit 3 sends signal, the stepper motor 9 on Carburetor 10 is driven to reduce the aperture of carburetor throttle by driver element 4 circuit and drive motor module 8, reduce the amount of the inflammable mixture of Carburetor 10, engine speed declines; When engine speed be less than setting the idle speed value upper limit (N1-200) turn time, MCU procedure control unit 3 sends signal, drive motor module 8 drives the stepper motor 9 on Carburetor 10 to increase the aperture of carburetor throttle, increase the amount of the inflammable mixture of Carburetor 10, engine speed rises, and the rotating speed of motor is maintained in the speed range of regulation.
When pressing Throttle Opening Control trigger, the potentiometer resistance being arranged on trigger knob signal element 1 changes, and according to the aperture of the Angular displacement control carburetor throttle of the stepper motor 9 of MCU procedure control unit 3 internal processes setting, controls the normal operation of motor.
When Throttle Opening Control trigger is pressed into the end, carburetor throttle standard-sized sheet, if now load is comparatively large, engine speed running below maximum speed (N2+200) turns, then stepper motor 9 is in maximum angle of rotation place always, carburetor throttle full-gear; If now load is less, the maximum speed (N2+200) that engine speed exceedes setting turns, then MCU procedure control unit 3 sends signal, drive motor module 8 drives the stepper motor 9 on Carburetor 10 to reduce the aperture of carburetor throttle, reduce the amount of the inflammable mixture of Carburetor 10, engine speed declines, and reaches the object of speed limit.
Because the inner MCU procedure control unit 3 of native system adopts digital microcontroller to control, therefore can to automatically adjust ignition advance angle to any rotating speed of motor, advantageously in the work of motor.
MCU procedure control unit 3 draws a suitable time of ignition after calculating according to the signal of rotation speed detection unit 2, trigger high voltage ignition unit 5 and discharge, by the inflammable mixture of spark plug 11 ignition combustion indoor, do work by driver element 4.
For plunger piston carburetor 10, described stepper motor is arranged on the top of the plunger of described Carburetor 10 usually.
For butterfly valve Carburetor 10, described stepper motor is arranged on one end of the rotating shaft of the closure of described Carburetor 10 usually.
The throttle control system of digital intelligent of the present invention is owing to taking above structure, igniter and Carburetor are combined, the throttle opening of Carburetor is controlled to reach the adjustment regulating the object of supplying oil of carburetor amount to realize engine speed by the tach signal of collection point firearm, when engine speed reaches the highest control rotating speed, reduce carburetor throttle, reduce supplying oil of carburetor amount, the output torque of motor reduces, rotating speed declines, thus avoids the too high machine breakdown that causes of engine speed and personal injury.Even at speed limit point rotary speed working, engine ignition remains normal, this is compared with taking to move back the technology of angle speed limit, the throttle control system of a kind of digital intelligent of the present invention eliminates throttle rope, structure is simpler, and design more rationally, rotating speed controls more accurately, in the more fuel-economizing of speed limit point working engine, exhaust emissions is better, Security is higher.
The foregoing is only schematic illustration of the present invention, specific embodiment can be implemented according to the principle of the invention, and those skilled in the art carries out common change and replace should being included in protection scope of the present invention within the scope of technical solution of the present invention.
Claims (7)
1. a miniature gasoline engine digital intelligent throttle control system, it is characterized in that, described control system comprises engine speed detecting unit, throttle trigger signal element, power supply processing unit, high voltage ignition unit, driver element, power supply system unit, drive motor module, stepper motor, Carburetor, spark plug and MCU procedure control unit;
Described rotation speed detection unit, for detecting sensor or the trigger winding of engine speed;
Described throttle trigger signal element, for detecting the signal element of manually operated trigger aperture;
Described power supply processing unit, for the confession electric treatment of MCU procedure control unit, driver element and high voltage ignition unit;
Described high voltage ignition unit, for generation of instantaneous pressure, lights inflammable mixture by spark-discharge;
Described driver element, accepts MCU order-driven stepper motor;
Described stepper motor, for controlling carburetor throttle opening;
Described Carburetor, for providing suitable inflammable mixture to motor;
Described spark plug, for lighting inflammable mixture in the electric discharge of suitable time of ignition;
Described MCU procedure control unit, for receiving engine speed and throttle trigger signal, follow and carry out calculating according to internal processes and compare, the aperture of the step motor control carburetor throttle on described Carburetor is arranged on by driver element circuit and drive motor module drive, thus control the amount of the inflammable mixture of Carburetor, regulate the rotating speed of motor.
2. a kind of miniature gasoline engine digital intelligent throttle control system according to claim 1, is characterized in that, described throttle trigger signal element is potentiometer, is arranged in the rotating shaft of throttle trigger; Described MCU procedure control unit, rotation speed detection unit, driver element, high voltage ignition unit, power supply system unit, power supply processing unit and drive motor module installation are inner at igniter case.
3. a kind of miniature gasoline engine digital intelligent throttle control system according to claim 1, is characterized in that, described Carburetor is plunger piston carburetor or butterfly valve Carburetor.
4. a kind of miniature gasoline engine digital intelligent throttle control system according to claim 3, it is characterized in that, described stepper motor is arranged on the top of the plunger of described plunger piston carburetor.
5. a kind of miniature gasoline engine digital intelligent throttle control system according to claim 3, it is characterized in that, described stepper motor is arranged on one end of the closure rotating shaft of described butterfly valve Carburetor.
6. a kind of miniature gasoline engine digital intelligent throttle control system according to claim 1, is characterized in that, described MCU procedure control unit adopts digital microcontroller to control.
7. a kind of miniature gasoline engine digital intelligent throttle control system according to any one of claim 1-6, is characterized in that, described MCU procedure control unit internal processes sets following parameter:
Engine idle rotational range parameter;
Engine peak speed range parameter;
The maximum rotation angle parameter of described stepper motor;
The corresponding relation parameter of described throttle trigger signal element angular displacement and described stepper motor angular displacement;
The ignition advance angle parameter of curve of described igniter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510337607.3A CN104912693A (en) | 2015-06-18 | 2015-06-18 | Digital intelligent accelerator control system of small gasoline engine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510337607.3A CN104912693A (en) | 2015-06-18 | 2015-06-18 | Digital intelligent accelerator control system of small gasoline engine |
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| CN104912693A true CN104912693A (en) | 2015-09-16 |
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| CN201510337607.3A Pending CN104912693A (en) | 2015-06-18 | 2015-06-18 | Digital intelligent accelerator control system of small gasoline engine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109556873A (en) * | 2018-11-30 | 2019-04-02 | 上海交通大学 | Engine and carburetor sets up mechanism with centering |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2462370Y (en) * | 2001-01-18 | 2001-11-28 | 应城市神风发动机有限责任公司 | Digit module controlled gasoline engine operating mode device |
| CN101042078A (en) * | 2006-03-22 | 2007-09-26 | 韩群山 | Control device of carburettor for motorcycle gasoline throttle and intelligence control method thereof |
| US20100204874A1 (en) * | 2009-02-12 | 2010-08-12 | Michael William Oyer | Universal Motorcycle Cruise Control System |
| WO2012042528A2 (en) * | 2010-09-28 | 2012-04-05 | Tvs Motor Company Limited | A vehicle speed control system |
| CN204984644U (en) * | 2015-06-18 | 2016-01-20 | 临沂照华动力机械有限公司 | Small -size gasoline engine digital intelligent throttle control system |
-
2015
- 2015-06-18 CN CN201510337607.3A patent/CN104912693A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2462370Y (en) * | 2001-01-18 | 2001-11-28 | 应城市神风发动机有限责任公司 | Digit module controlled gasoline engine operating mode device |
| CN101042078A (en) * | 2006-03-22 | 2007-09-26 | 韩群山 | Control device of carburettor for motorcycle gasoline throttle and intelligence control method thereof |
| US20100204874A1 (en) * | 2009-02-12 | 2010-08-12 | Michael William Oyer | Universal Motorcycle Cruise Control System |
| WO2012042528A2 (en) * | 2010-09-28 | 2012-04-05 | Tvs Motor Company Limited | A vehicle speed control system |
| CN204984644U (en) * | 2015-06-18 | 2016-01-20 | 临沂照华动力机械有限公司 | Small -size gasoline engine digital intelligent throttle control system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109556873A (en) * | 2018-11-30 | 2019-04-02 | 上海交通大学 | Engine and carburetor sets up mechanism with centering |
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Application publication date: 20150916 |