Background technique
At present, the oil supply system of motorcycle generally is divided into two kinds: carburetor oil-supply system and electric control fuel oil jet system.
Carburetor oil-supply system is simple in structure, cost is low, but the control accuracy of air fuel ratio is not high, is difficult to control preferably the discharge amount of harmful exhaust.Raising along with Emission Regulation for Motorcycles Running requires, just seem more and more difficult with the carburetor circuit reply.
Electric control fuel oil jet system can accurately be controlled air fuel ratio, can effectively control the discharge amount of harmful exhaust, and also the efficient performance for tail-gas after treatment apparatus provides assurance, can further improve engine performance simultaneously.Yet, electric control fuel oil jet system is huger and complicated than carburetor circuit, car load change amount is large, electric injection system electronic control unit hardware-software is also more complicated, technology neither be very ripe at home, need to drop into more research and development and manufacture cost early stage, later stage need to be dropped into more manpower and materials and be carried out after sales service staff training and equipment purchasing, these finally cause car load expensive, so the field that the electric injection system electronic control unit is had relatively high expectations in this cost control of motorcycle is difficult to popularize.
In addition, the motorcycle of present stage, its ignition system can be divided into analog ignition system and digital ignition system by the time of ignition control mode.Although analog electronic spark advance characteristic can change slightly by Circuit tuning and component parameter, changeable scope and flexibility have existing, and the Optimum spark advance angle of its firing characteristic and petrol engine differs greatly.Realize that the optimum igniting of motorcycle gasoline engine in the whole service scope just must adopt digital control circuit.
The model utility content
The purpose of this utility model is to provide a kind of electric control unit of small engine with ignition function, to solve the deficiencies in the prior art part.
For achieving the above object, the utility model adopts following technological scheme:
A kind of electric control unit of small engine with ignition function, is characterized in that, comprising: a power supply processing module is connected with ABAP Adapter; One microcontroller; One signal processing module, it has at least one input interface and output terminal is connected with described microcontroller, the combination that described at least one input interface is at least two kinds of lambda sensor interface, temperature sensor interface, trigger winding interface, throttle opening interface or they; One igniting module, its input end with described microcontroller, be connected and there is charging input interface, light a fire output interface and flame-out output interface; With a driver module, its input end is connected with described microcontroller and has solenoid-driven output interface, oxygen heat driven output interface and fault indicating lamp controls output interface.
Further, the utility model also comprises a communication module, and its input end is connected with described microcontroller.
Further, the utility model also comprises a fault indicating lamp, and it is a light emitting diode, controls output interface with described fault indicating lamp and is connected.
As preferably, described igniting output interface is ac digital igniting output interface or DC digital igniting output interface.
The utility model, by adopting said structure, is to increase the electronic control unit of automatical control system in carburetor circuit, can originally select input output with becoming according to the car load demand, and control accuracy is high, reliable performance; Ignition system can adopt the digital ignition mode, be used on the automatically controlled system of motorcycle, car load is changed little, Perfect in shape and function, can reduce the pollution of harmful exhaust to environment, in conjunction with the exhaust aftertreatment technology, can make exhaust emissions meet national three phase Emission Regulation for Motorcycles Runnings, ⅢHe Europe, Europe IV Emission Regulation for Motorcycles Running, fuel evaporation disposal of pollutants rules, can also keep or improve Economy, power character, the ride comfort of motorcycle simultaneously.In addition, the utility model is simple and practical, with low cost.
Embodiment
Embodiment 1
As shown in Figure 1, the described a kind of electric control unit of small engine with ignition function 1 of the present embodiment 1, mainly be comprised of power supply processing module 11, microcontroller 12, signal processing module 13, ignition module 14, driver module 15 and communication module 16.
Wherein, power supply processing module 11 is connected with ABAP Adapter 5, and the input end of the input end of the input end of the output terminal of signal processing module 13, ignition module 14, driver module 15 and communication module 16 is connected with microcontroller 12 respectively.Described signal processing module 13 can be provided with lambda sensor interface 131, temperature sensor interface 132, trigger winding interface 133 and throttle opening interface 134 according to actual demand.
Be illustrated in figure 2 the particular circuit configurations figure of the present embodiment.In the present embodiment, enter the engine rotational speed signal that the signal of the signal processing module of electronic control unit 1 provides for temperature transducer 22 signals, lambda sensor 21 signals, trigger winding 23.The driver module of electronic control unit 1 is controlled on Carburetor low speed tonifying Qi road with solenoid valve 41(respectively), the non-heating type oxygen sensors of heating type oxygen sensors 21(need not connect) and light emitting diode of fault indicating lamp 42().Firing circuit 32 is to adopt the ac digital firing mode, belongs to capacitive discharge ignition, and the electric current input charging that the magnetogenerator of charging in charging circuit 31 sends, during capacitor discharge, produce powerful electrical spark.
Can know that whether system is working properly by fault indicating lamp before and after motorcycle starting.Open key, before not lighting a fire, if fault indicating lamp does not work, illustrate that there is fault in electronic control unit; After starting, in the process of moving, electronic control unit can continue supervisory system, and as found that system unit breaks down, the indicating fault lantern festival notifies custom system to have fault by flicker.After fault is got rid of, the warning tutorial light can recover automatically, becomes the state gone out.
While starting dynamo-electric startup or pin to start, when the electronic control unit judgement is starting state, by detecting the negative half-wave tach signal of trigger winding 23, lighted a fire, until start successfully.After engine start, electronic control unit carries out the two-dimensional control point fire according to trigger winding tach signal, ignition advance angle, makes motorcycle realize optimum igniting in the whole service scope.
After engine start, according to temperature sensor signal and trigger winding tach signal, export corresponding Duty ratio control electromagnetic valve work, drive solenoid valve to open suitable aperture.After the motor heat engine, the testing signal according to lambda sensor to tail gas, export corresponding duty cycle signals, and air compensation is carried out to feedback control, makes to enter the air fuel ratio of mixed gas of motor all the time near chemically correct fuel.When the needs stop, by driver module, drive flameout switch 33 to disconnect, can realize stopping working.
In addition by communication module can with the computer upper machine communication, carry out program updates, nominal data and monitoring in real time; And can reduce electronic control unit volume, reduce costs.
Embodiment 2
As shown in Figure 3, the present embodiment is compared with upper embodiment 1, and its main difference part is: in order to control more accurately igniting, control more accurately air fuel ratio, increased the signal input of engine load sensor 24 at the input signal end of this electronic control unit 1.
After engine start, electronic control unit carries out the accurate three-dimensional igniting of controlling according to engine load sensor signal, trigger winding tach signal, ignition advance angle, makes motorcycle be more prone to realize optimum igniting in the whole service scope.According to temperature sensor signal and trigger winding tach signal, export corresponding duty cycle signals simultaneously, drive solenoid valve to open suitable aperture.After the motor heat engine, testing signal according to lambda sensor to tail gas, according to the engine load sensor signal, judge engine operating condition, export corresponding duty cycle signals, air compensation is carried out to feedback control, make to enter the air fuel ratio of mixed gas of motor all the time near chemically correct fuel.
Embodiment 3
As shown in Figure 4, the present embodiment enters the engine rotational speed signal that the signal of the signal processing module of electronic control unit 1 provides for temperature transducer 22 signals, lambda sensor 21 signals, trigger winding 23.The driver module of electronic control unit 1 is controlled on Carburetor low speed tonifying Qi road with solenoid valve 41(respectively), the non-heating type oxygen sensors of heating type oxygen sensors 21(need not connect) and light emitting diode of fault indicating lamp 42().Firing circuit 32 is to adopt the DC digital firing mode, belongs to capacitive discharge ignition, and capacitor charging by the ignition module boost charge, during capacitor discharge, produces powerful electrical spark by storage battery.
Can know that whether system is working properly by fault indicating lamp before and after motorcycle starting.Open key, before not lighting a fire, if fault indicating lamp does not work, illustrate that there is fault in electronic control unit; After starting, in the process of moving, electronic control unit can continue supervisory system, and as found that system unit breaks down, the indicating fault lantern festival notifies custom system to have fault by flicker.After fault is got rid of, the indicating fault lantern festival is recovered automatically, becomes the state gone out.
While starting dynamo-electric startup or pin to start, when the electronic control unit judgement is starting state, by detecting the negative half-wave tach signal of trigger winding, lighted a fire, until start successfully.After engine start, electronic control unit carries out the two-dimensional control point fire according to trigger winding tach signal, ignition advance angle, makes motorcycle realize optimum igniting in the whole service scope.
After engine start, electronic control unit carries out the two-dimensional control point fire according to trigger winding tach signal, ignition advance angle, according to temperature sensor signal and trigger winding tach signal, export corresponding Duty ratio control electromagnetic valve work simultaneously, drive solenoid valve to open suitable aperture.After the motor heat engine, the testing signal according to lambda sensor to tail gas, export corresponding duty cycle signals, and air compensation is carried out to feedback control, makes to enter the air fuel ratio of mixed gas of motor all the time near chemically correct fuel.
Embodiment 4
As shown in Figure 5, the present embodiment is compared with embodiment 3, and its main difference part is: in order to control more accurately igniting, control more accurately air fuel ratio, at this electronic control unit input signal end, increased the input of engine load sensor signal.After engine start, electronic control unit carries out the accurate three-dimensional igniting of controlling according to engine load sensor signal, trigger winding tach signal, ignition advance angle, makes motorcycle be more prone to realize optimum igniting in the whole service scope.According to temperature sensor signal and trigger winding tach signal, export corresponding duty cycle signals simultaneously, drive solenoid valve to open suitable aperture.After the motor heat engine, testing signal according to lambda sensor to tail gas, according to the engine load sensor signal, judge engine operating condition, export corresponding duty cycle signals, air compensation is carried out to feedback control, make to enter the air fuel ratio of mixed gas of motor all the time near chemically correct fuel.