CN1460787A - Idle speed rotating speed closed ring control method for motorcycle electric controlled engine - Google Patents
Idle speed rotating speed closed ring control method for motorcycle electric controlled engine Download PDFInfo
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- CN1460787A CN1460787A CN 03137256 CN03137256A CN1460787A CN 1460787 A CN1460787 A CN 1460787A CN 03137256 CN03137256 CN 03137256 CN 03137256 A CN03137256 A CN 03137256A CN 1460787 A CN1460787 A CN 1460787A
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- rotating speed
- air valve
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- fuel injection
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Abstract
The present invention belongs to the field of motorcycle engine control technology, and its technical scheme is as follows: the set engine required rotating speed value of fuel-injecting pulse duration increment table which is obtained by using testing method when the engine is run in target idle rotating speed and correspondent to the different openings of by-pass air valve are stored in the electronic control unit; said electronic control unit utilizes the rotating speed sensor to make real-time detection of idle rotating speed and make comparison with target rotating speed value to rergulate opening of by-pass air valve; the electronic control unit can find out fuel-injecting pulse duration increment correspondent to the by-pass air valve opening in increment table.
Description
Technical field
The invention belongs to the control technique field of motorcycle engine.
Background technique
The electric control fuel oil jet system of the extensive employing of petrol engine at present, the method of engine idle speed closed loop control, be that motor is when turning round under idling operation, electronic control unit compares the real-time detected engine speed and the rotating speed of target value of storing in storage, when the rotating speed of motor is higher than desired value, the aperture that is installed in the bypath air valve on the throttle valve body is reduced, minimizing reduces the absolute pressure in the intake manifold by the air quantity that the bypath air valve enters motor; Vice versa.Electronic control unit is gathered intake manifold interior absolute pressure and engine speed according to the load sensor that is installed on the engine intake manifold, calculate fuel injection quantity with the speed density method, the fuel injection pulsewidth of control oil sprayer, the increase and decrease fuel injection quantity is realized the closed loop control to the engine idle rotating speed.
The motorcycle engine cylinder number is few, and the space is narrow and small, can't install resonant cavity additional in the gas handling system, and intake manifold is short again, and motor is when low-speed running, and the detected force value fluctuation of absolute pressure transducer is very big, is difficult to obtain accurate data.In addition, the price of manifold absolute pressure sensor is high again, in order to reduce the cost of system, so adopt the double load sensor of doing of the throttle position sensor of original system to use.Motor is when idle running, because the initial position of throttle position sensor is changeless, and variation that can not the perception engine load, thereby can't carry out the closed loop control of idling speed.
Summary of the invention
Existing motorcycle electric-control motor idling speed control system uses absolute pressure transducer to carry out the idling closed loop control as load sensor, system complex, cost height.In order to address the above problem the method that the invention provides the closed loop control of a kind of motorcycle electric-control motor idling speed, it is characterized in that this method comprises the steps:
1) sets the rotating speed of target value of motorcycle engine, and be stored in the storage of electronic control unit;
2) produce motor pairing fuel injection pulsewidth increment list of bypath air valve different opening when the target idling speed is moved with test method, this table is stored in the storage of electronic control unit;
3) motor is when idle running, electronic control unit by the real-time detection of engine of speed probe idling speed and and the rotating speed of target value compare, increase the aperture of bypath air valve if idling speed is lower than the rotating speed of target value, reduce the aperture of bypath air valve if idling speed is higher than the rotating speed of target value;
4) electronic control unit is found the corresponding fuel injection pulsewidth increment of bypath air valve opening at that time in the fuel injection pulsewidth increment list, then with the addition of idling basic fuel injection pulsewidth, the switching time of output control oil sprayer is adjusted fuel injection quantity, thereby realize the closed loop control of idling speed, idling speed is remained in the rotating speed of target scope of setting.
Electric controlled motorcycle engine adopts this method, can simplify the structure of system, reduces cost, and improves the competitive capacity of product.As increase the setting of high idle speed control function, and shorten the time of warming-up, also can reduce the discharging of motorcycle engine pollutant when warming-up significantly.
The new method of this motorcycle electric-control motor idling speed closed loop control has been filled up domestic blank, does not also see in the document of publishing abroad.
Description of drawings
Fig. 1 is the schematic representation of the closed loop control system of realization the method for the invention.
Fig. 2 is an idling speed closed loop control flow chart.
Embodiment
Further specify principle of the present invention and concrete implementation method below in conjunction with accompanying drawing.
Motor is when idle running, and the mixed gas quantity of suction increases, and rotating speed improves; The quantity that sucks mixed gas reduces then, and rotating speed reduces.Motor is when idle running, and the method that mixed gas forms is as follows: air is to enter engine intake manifold 5 by closure 3 and bypath air valve 4, and the fuel oil that sprays with oil sprayer 6 sucks in the cylinder.The air that enters by closure is the required basic air quantity of idle running, and corresponding fuel injection quantity is controlled by idling basic fuel injection pulsewidth; The air quantity that enters by the bypath air valve is determined that by the aperture size of bypath air valve and the rotating speed of motor the increment of fuel injection quantity corresponding with it is to realize by the increment of adjusting fuel injection pulsewidth.
Motorcycle electric-control motor idling speed closed loop control method, realize according to following concrete step:
At first, set the rotating speed of target value of motorcycle engine, be 1400 rev/mins as the target idling speed, and be stored in the storage of electronic control unit 1;
Then, produce motor pairing fuel injection pulsewidth increment list of bypath air valve different opening when the target idling speed is moved, this table is stored in the storage of electronic control unit with test method;
The method of producing the target idling speed and be 1400 rev/mins bypath air valve opening and corresponding fuel injection pulsewidth increment list is as follows: on engine test stand, engine warming up is arrived the normal working temperature scope, the bypath air valve is in buttoned-up status, maintain static after the adjustment throttle opening makes engine speed rise to 1300 rev/mins, leave engine idling.What at this moment electronic control unit was exported is idling basic fuel injection pulsewidth.
Strengthen the aperture of bypath air valve gradually, increase the fuel injection pulsewidth increment simultaneously, make the rotating speed of motor rise to 1400 rev/mins, under the precondition of 1400 rev/mins of maintenances, the aperture of fine tuning bypath air valve and fuel injection pulsewidth increment change air fuel ratio, variation with air fuel ratio instrument monitoring air fuel ratio remains near the chemically correct fuel it, after pending data is stable this point data is deposited in the table.Slightly issue additional the load of motivation, at this moment the rotating speed of motor descends, and repeats to obtain second point with the step of adjusted bypath air valve opening, and the rest may be inferred, is created on fuel injection pulsewidth increment list corresponding under the different bypath air valve openings at last.How many objectives idling speed is, do several points, decides on the type of concrete motor.When reality was used, the aperture of bypath air valve can use interpolation to improve the precision that reads data not on node the time.The effect of this table is, is used for guaranteeing entering by the bypath air valve air fuel ratio of the mixed gas that amount of fuel forms of air quantity in the manifold and fuel injection pulsewidth increment control ejection.
Then, as shown in Figure 2, at motor during at idle running, electronic control unit 1 by speed probe 2 real-time detection of engine idling speed and and the rotating speed of target value compare, if idling speed is lower than the rotating speed of target value then increases the bypath air valve opening,, idling speed reduces the bypath air valve opening if being higher than the rotating speed of target value;
At last, electronic control unit is found the corresponding fuel injection pulsewidth increment of bypath air valve opening at that time in the fuel injection pulsewidth increment list, then with the addition of idling basic fuel injection pulsewidth, the switching time of output control oil sprayer is adjusted fuel injection quantity, change the quantity that motor sucks mixed gas, thereby realize the closed loop control of idling speed, idling speed is remained in the rotating speed of target scope of setting.
Claims (1)
1. motorcycle electric-control motor idling speed closed loop control method is characterized in that this method comprises the steps:
1) sets the rotating speed of target value of motorcycle engine, and be stored in the storage of electronic control unit;
2) produce motor pairing fuel injection pulsewidth increment list of bypath air valve different opening when the target idling speed is moved with test method, this table is stored in the storage of electronic control unit;
3) motor is when idle running, electronic control unit by the real-time detection of engine of speed probe idling speed and and the rotating speed of target value compare, increase the aperture of bypath air valve if idling speed is lower than the rotating speed of target value, reduce the aperture of bypath air valve if idling speed is higher than the rotating speed of target value;
4) electronic control unit is found the corresponding fuel injection pulsewidth increment of bypath air valve opening at that time in the fuel injection pulsewidth increment list, then with the addition of idling basic fuel injection pulsewidth, the switching time of output control oil sprayer is adjusted fuel injection quantity, thereby realize the closed loop control of idling speed, idling speed is remained in the rotating speed of target scope of setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03137256 CN1460787A (en) | 2003-06-03 | 2003-06-03 | Idle speed rotating speed closed ring control method for motorcycle electric controlled engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03137256 CN1460787A (en) | 2003-06-03 | 2003-06-03 | Idle speed rotating speed closed ring control method for motorcycle electric controlled engine |
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| CN1460787A true CN1460787A (en) | 2003-12-10 |
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| CN 03137256 Pending CN1460787A (en) | 2003-06-03 | 2003-06-03 | Idle speed rotating speed closed ring control method for motorcycle electric controlled engine |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101655039B (en) * | 2008-08-21 | 2013-06-12 | 三菱电机株式会社 | Engine control device |
| CN106870169A (en) * | 2017-04-07 | 2017-06-20 | 四川森洁燃气设备有限公司 | Idle speed adjustment solar term structure with long service life |
| CN108343741A (en) * | 2018-02-26 | 2018-07-31 | 北京汽车研究总院有限公司 | Alleviate control method, control system and the vehicle of the impact of MT vehicle shifts |
| CN110792518A (en) * | 2019-11-18 | 2020-02-14 | 联合汽车电子（重庆）有限公司 | Low-speed low-load control system of electronic fuel injection motorcycle |
-
2003
- 2003-06-03 CN CN 03137256 patent/CN1460787A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101655039B (en) * | 2008-08-21 | 2013-06-12 | 三菱电机株式会社 | Engine control device |
| CN106870169A (en) * | 2017-04-07 | 2017-06-20 | 四川森洁燃气设备有限公司 | Idle speed adjustment solar term structure with long service life |
| CN108343741A (en) * | 2018-02-26 | 2018-07-31 | 北京汽车研究总院有限公司 | Alleviate control method, control system and the vehicle of the impact of MT vehicle shifts |
| CN110792518A (en) * | 2019-11-18 | 2020-02-14 | 联合汽车电子（重庆）有限公司 | Low-speed low-load control system of electronic fuel injection motorcycle |
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