CN101363381B - Electric-controlled work system for motorboat with petrol engine - Google Patents

Electric-controlled work system for motorboat with petrol engine Download PDF

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CN101363381B
CN101363381B CN2008101615370A CN200810161537A CN101363381B CN 101363381 B CN101363381 B CN 101363381B CN 2008101615370 A CN2008101615370 A CN 2008101615370A CN 200810161537 A CN200810161537 A CN 200810161537A CN 101363381 B CN101363381 B CN 101363381B
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sensor
engine
fuel
electronic control
throttle
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CN101363381A (en
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张和君
王和平
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Hubei Sanjiang Boats Science and Technology Co., Ltd.
WUHAN LINGDIAN AUTOMOBILE ELECTRONIC CONTROL SYSTEMCO., LTD.
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张和君
王和平
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Abstract

The invention provides an electronic control work system of a motorboat with a gasoline engine, comprising an air intake system, a fuel oil supply system, an ignition system as well as an electronic control system; the electronic control system consists of a sensor section, an electronic control unit ECU and an actuator section, wherein the sensor section includes a throttle position sensor and anintake pressure and temperature sensor which are arranged on an intake pipe of an intake system, a camshaft position sensor, a coolant temperature sensor and an engine oil pressure switch signal andcrankshaft position sensor which are arranged on the engine as well as a tail gas thermo-switch signal and direction column position sensor and a capsizing switch sensor which are arranged on an exhaust pipe of the engine, and the components of the sensor section are all connected with the ECU; the actuator section consists of an electric fuel pump, an oil sprayer, an idle valve and a fault indicating lamp; the components of the actuator section are all connected with the ECU, and the ECU includes a non-accelerator control program and an interrupting control program; furthermore, the electronic control work system has good power performance, fuel economy and emission performance.

Description

The electric-controlled work system that is used for motorboat with petrol engine
Technical field
The invention belongs to motor automatic control technology field, relate to a kind of automatic controller that is used for motorboat with petrol engine, particularly a kind of electric-controlled work system that is used for motorboat with petrol engine.
Background technique
As everyone knows, traditional motorboat engine adopts Carburetor as its gasoline atomizing apparatus, automobile with traditional employing carburetor engine is the same, because carburetor engine is not carried out intelligent control to fuel combustion process in cylinder, cause its gasoline combustion incomplete, not only waste gasoline, even more serious is that toxic emission is more serious, and atmosphere is polluted.For addressing this problem, adopting the electronically controlled gasoline injection technology is comparatively effective way.In recent years, use ECU to realize that the electronically controlled gasoline injection technology is able to rapid application in the motor car engine field.Its principle is to spray in intake duct or the cylinder with the gasoline of intelligent control oil sprayer with certain pressure and quantity, to improve the gasoline atomizing quality, improves the petrol engine fuel performance, reduces fuel consume, and the pollutant of discharging is reduced.
ECU is first three letter abbreviations of English title (Electrical control unit) from name, and the meaning of Chinese is exactly an electronic control unit.The working principle of ECU is briefly controlled fuel oil according to the feedback of the sensor that links to each other with motor exactly and is mixed (Air/Fuel Ratio) and spark timing (electronic spark advance and endurance).The control of fuel oil mixing and ignition timing is quite complicated, and ECU need obtain data to realize the optiumum control of system from a plurality of sensors.
At present, motor boat all is to adopt engine-driving to be immersed in jet pump Push Technology in the water.Change traditional Carburetor atomising device into the electronically controlled gasoline injection atomising device, because of motor boat is the traffic tool that travel in water, the technology of existing electronically controlled gasoline injection is still waiting further improvement.
We know, existing motor boat not only relies on and is immersed in that jet pump advances in the water, are immersed in the water jet pump and realize turning but also rely on, thereby be to drive in the water jet pump by rotatory handling to turn and change the turning action that injection direction is realized motor boat.Can imagine that in case jet pump runs out of steam, turning action also can't realize.So, motor boat electronic control unit ECU should have following function: after unclamping throttle, promptly do not have throttle, and be under the situation of conventional speeds and still can control motor boat, continue to turn by increasing certain thrust, if you control handgrip when increasing throttle.In addition, existing motor boat and other ship all do not have brake, whether can stop motor boat before hitting obstacle, the change direction of need opening the throttle if can not determine.
Summary of the invention
The technology technical problem that the present invention will solve is to rely on the characteristics that the jet pump realization advances and turns in the water that are immersed at the Wave Race ship, on the basis of the technology of existing electronically controlled gasoline injection, further provide a kind of motor boat in no throttle direction control mode, be used to control the motor boat direction.
The present invention solves the problems of the technologies described above the technological scheme that is adopted:
The electric-controlled work system that is used for motorboat with petrol engine, comprise gas handling system, fuel oil supply system, ignition system, it is characterized in that also comprising electronic control system, described electronic control system comprises Sensor section, electronic control unit ECU and final controlling element part, and the parts of described Sensor section all are connected with electronic control unit ECU, and the parts of described final controlling element part all are connected with electronic control unit ECU; Described electronic control unit ECU (7) includes singlechip CPU; It is characterized in that: described electronic control unit ECU (7) comprises and has or not the throttle control program, described no throttle control program comprises carries out following controlling method: after ECU (Electrical Control Unit) is started working, main program in the described single-chip microcomputer receives the AD sampled signal, when detecting the voltage signal of steering shaft rotation by direction post position transducer, main program just enters no throttle control system automatically; Detect the throttle position signal of this moment by throttle position sensor, if the throttle position voltage that detects this moment during greater than 0V, no throttle control system is end automatically just; If the throttle position voltage that detects this moment is when being 0V, main program is again by crankshaft position sensor detection of engine tach signal, is lower than towing speed if detect this moment engine speed, and no throttle control system is end automatically just; If the engine speed that detects this moment is greater than towing speed, no throttle control system just calls the AD sampled value that main program sends here according to direction post position transducer and calculates the speed that the current goal rotating speed descends, control the running step number of idle valve by the target speed value that calculates, no throttle control system is started working.
In technique scheme, described Sensor section comprises throttle position sensor on the suction tude that is installed in gas handling system and suction pressure, temperature transducer, be installed in CMPS Camshaft Position Sensor, cooling-water temperature transmitter, Oil pressure switch signal, crankshaft position sensor on the motor, be installed in tail gas temperature-sensitive switching signal, direction post position transducer and shipwreck switch sensor on the engine exhaust pipe; Described final controlling element partly comprises electric fuel punp, oil sprayer, idle valve, ignition controler, fault indicating lamp.
In technique scheme, described crankshaft position sensor has two, and described two crankshaft position sensors are 180 degree and install.
In technique scheme, described fuel oil supply system comprises electric fuel punp, fuel tank, fuel filter, pressure regulator, oil sprayer and oily rail, electric fuel punp is positioned at fuel tank, fuel filter is between oily rail and electric fuel punp, pressure regulator connects electric fuel punp, and oily rail is connected with oil sprayer, and described oil sprayer is exactly a final controlling element part oil sprayer.
In technique scheme, described electronic control unit ECU also comprises input circlult, rom memory, the RAM that is used to connect Sensor section and is used to be connected the output circuit of final controlling element part, the two ends of described singlechip CPU connect input circlult and output circuit, and rom memory, RAM are connected with singlechip CPU.
Described electronic control unit ECU includes interruption oil spout control program.
In technique scheme, described interruption oil spout control program comprises carries out following controlling method: at first by sensor interface circuitry pick-up transducers signal, detect the signal value of two-way CRANK SENSOR, and utilize interrupt routine to handle, utilize the signal value of CMPS Camshaft Position Sensor to declare cylinder again, and according to behind the residing state of algorithm judgement motor in the control software, press the setting value that MAP figure calculates fuel injection quantity, according to coolant temperature and intake temperature fuel injection quantity is revised simultaneously.
A kind of motorboat with petrol engine, it is furnished with aforesaid electric-controlled work system.And described electronic control unit ECU (7) includes interruption oil spout control program; Described interruption oil spout control program comprises carries out following controlling method: at first by sensor interface circuitry pick-up transducers signal, detect the signal value of two-way CRANK SENSOR, and utilize interrupt routine to handle, utilize the signal value of CMPS Camshaft Position Sensor to declare cylinder again, and according to behind the residing state of algorithm judgement motor in the control software, press the setting value that MAP figure calculates fuel injection quantity, according to coolant temperature and intake temperature fuel injection quantity is revised simultaneously.
By above-mentioned motor boat rotatory handling, also be provided with a plug-in type hand button switch gear.
Certainly, can only produce very little thrust because of being totally released throttle.If travelling speed is higher than towing speed, do not having to lose the control of direction very soon under the situation of throttle.After unclamping throttle, may also have direction control to a certain degree.In case engine retard, the handgrip control of motor boat no longer includes any reaction, up to opening throttle once more or reaching towing speed.Under towing speed, hull is merely able to turn lentamente by the position of adjusting handgrip.
Motorboat engine electronic control unit ECU is the core of motorboat engine control system, it can be according to the different operating modes of motor, the mixed gas and the optimum igniting time of optimal air-fuel ratio are provided to motor, make motor be in optimum Working all the time, it is best that the performance of motor (power character, Economy, exhaust index) reaches.
Electric-controlled gasoline motorboat engine work system of the present invention has the following advantages: the present invention has replaced original carburetor engine ship with the control fuel injection technology generation, increased electronic control unit ECU, poor, the total hydrocarbon discharge amount height of common mechanical formula Carburetor ship fuel economy, inefficient shortcoming have been avoided, thereby can obtain good power character, fuel economy and emission performance; Also can realize direction control at no throttle; The motor boat running velocity also can obviously improve, and The whole control system is safe and reliable.
Description of drawings
Fig. 1 is the structural representation of electric-controlled gasoline motorboat engine work system of the present invention.
Fig. 2 forms skeleton diagram for the hardware circuit of electronic control system of the present invention.
Fig. 3 does not have the flow chart of Throttle Opening Control program for the present invention.
Fig. 4 is the flow chart of interrupt control routine of the present invention.
1. throttle position sensor among the figure, 2. suction pressure temperature transducer, 3. spark coil, 4. CMPS Camshaft Position Sensor, 5. tail gas thermoswitch, 6. silencing apparatus, 7. electronic control unit ECU, 8. cooling-water temperature transmitter, 9. Oil pressure switch, 10. storage battery, 11. crankshaft position sensor, 13. motors, 14. electric fuel punps, 15. fuel tank, 16. oily rail, 17. fuel filters, 18. pressure regulators, 19. oil sprayer, 20. idle valve, 21. direction post position transducers, 23. shipwreck switches, 24. fault indicating lamp, 25. switching signals.
Embodiment
Describe performance of the present invention in detail below in conjunction with accompanying drawing, but they do not constitute limitation of the invention, only give an example.Simultaneously by illustrating that advantage of the present invention will become clear more and understanding easily.
Consult accompanying drawing, electric-controlled gasoline motorboat engine work system of the present invention, it comprises gas handling system, fuel oil supply system, ignition system, also comprise electronic control system, described electronic control system comprises Sensor section, electronic control unit ECU and final controlling element part, described Sensor section comprises throttle position sensor 1 and the suction pressure temperature transducer 2 on the suction tude that is installed in gas handling system, be installed in the CMPS Camshaft Position Sensor 4 on the motor 13, cooling-water temperature transmitter 8, Oil pressure switch signal 9, crankshaft position sensor 11, be installed in the tail gas temperature-sensitive switching signal 5 on the engine exhaust pipe, direction post position transducer 21 and shipwreck switch sensor 23, the parts of described Sensor section all are connected with electronic control unit ECU, and described final controlling element partly comprises electric fuel punp 14, oil sprayer 19, idle valve 20, ignition controler 3, fault indicating lamp 24; The parts of final controlling element part all are connected with electronic control unit ECU.
Crankshaft position sensor 11 has two, and described two crankshaft position sensors are 180 degree and install.Two signal teeth on the corresponding crankshaft signal dish of these two crankshaft position sensors, these two signal teeth become angle 60 degree with the signal panel center.When starter motor is driving in the crankshaft operation process, two crankshaft position sensors detect the continuous variable signal of two signal teeth, and become 60 °, 120 °, 60 °, 120 ° change continuously, so more help the processing and the computing of motor single-chip data when running up, and rotating speed reaches 10000 commentaries on classics when travelling on the water for motor boat provides guarantee.Fuel oil supply system, comprise electric fuel punp 14, fuel tank 15, fuel filter 17, pressure regulator 18, oil sprayer 19 and oily rail 16, electric fuel punp 14 is positioned at fuel tank 15, fuel filter 17 is between oily rail 16 and electric fuel punp 14, and pressure regulator 18 connects electric fuel punp 14, and oily rail 16 is connected with oil sprayer 19.
Throttle position sensor 1 is installed on the throttle body, link to each other with throttle plate pin, the aperture of driver by throttle lever control node valve, throttle position sensor is converted to 0~5V signal with the aperture of closure and is input to ECU, judges the foundation of engine operation condition as ECU.Suction pressure temperature transducer 2 can be all-in-one-piece, also can be split type, is installed on the admission line; Air inlet pressure sensor is used for the detection of engine suction pressure, calculates air input of engine by air according to suction press and engine speed, and with signal conveys to ECU, calculate fuel injection quantity and firing time for ECU.Intake air temperature sensor is to detect intake temperature, and give ECU with testing result, air density is relevant with its temperature, under identical air inflow signal, the air quality that enters motor reduces with the increase of air temperature, and the intake air temperature sensor measured signal is exactly in order to compensate this error.Cylinder body cooling-water temperature transmitter 8 is to be used for the temperature of detection of engine cylinder body cooling liquid, as the corrected signal to oil spout and IGNITION CONTROL.Crankshaft position sensor 11 is used for detecting crank angle and engine speed, as the signal of oil spout and IGNITION CONTROL.CMPS Camshaft Position Sensor 4 is used for detecting the cylinder piston top dead center position No. 1, as ECU control ignition reference signal constantly.Direction post sensor 21 is in order to detect the motor boat turn condition, ECU enters no power control (OTS) system according to this signal, when decontroling throttle lever manipulation motor boat, ECU control idle motors is regulated the idling throttle opening and is improved engine speed, keep part thrust to assist turning, be lower than under the state that conventional speeds or motor stop, the OTS system does not play a role.
The main task of electric fuel punp 14 is to supply with the enough gasoline with authorized pressure of oil-fired system.ECU controls the start and stop of electric fuel punp by the control fuel pump relay.Electromagnetic fuel injector 19 is final controlling element of a key of engine electric-controlled oil spurts system, and it accepts the fuel injection pulse signal that ECU sends here, and fuel injection pulse width decision fuel injector needle valve opening time promptly determines the fuel injection quantity size.The main effect of IACV (Idle Air Control Valve) 20 is idling speed of control motor.ECU comprises two aspects to the control of engine idle, and on the one hand being motor stablize idling speed when normal idle running, accomplish to prevent the purpose of engine misses and reduction oil consumption; Be on the other hand under the engine idling operation state, no power control system (OTS) improves idling speed when playing a role automatically, keeps part thrust to assist turning.Spark coil 3 is by ECU control ignition coil primary current break-make and induce the spark plug sparking that high-tension electricity makes respective cylinder in secondary winding, lights mixed gas.
Electronic control unit ECU of the present invention comprises input circlult, singlechip CPU, rom memory, RAM and output circuit, and the two ends of described CPU connect input circlult and output circuit, and rom memory, RAM are connected with singlechip CPU.Electronic control unit ECU of the present invention comprises and has or not Throttle Opening Control program and interrupt control routine.ROM is often referred to the curing storage, and promptly write-once reads repeatedly, and its feature is opposite with RAM.ROM divides disposal solidifying, light to wipe again and electricity is wiped two types of rewritings.
Gas handling system is made up of air-strainer, idle valve, closure, suction tude etc., and it provides required air for the engines combustible mixed gas; Fuel oil supply system is made up of fuel pump, fuel filter, fuel pressure regulator, oil sprayer and fuel supply line etc., and it provides required fuel oil for the engines combustible mixed gas; Ignition system provides electrical spark for motor, and it is made up of ignition electronic, spark coil, spark plug, high-voltage conducting wires etc.; Electronic control system comprises Sensor section, electronic control unit ECU and final controlling element part, its control fuel injection time and time of ignition.
Motorboat engine electronic control unit ECU is the core of motorboat engine control system of the present invention, it can be according to the different operating modes of motor, the mixed gas and the optimum igniting time of optimal air-fuel ratio are provided to motor, make motor be in optimum Working all the time, it is best that the power character of motor, Economy, exhaust index reach.
The major function of motorboat engine (ECU) electronic control unit:
1, fuel Injection Control: the motor of motor boat utilizes electronic fuel injection system that the combustion gas ratio of optimization is provided to motor.By the combustion condition through optimizing, this cover system can promote ignition trigger ability and fuel economy.
(1), fuel injection quantity control: engine electronic control unit (ECU) with air inflow and engine load as the major control signal, to determine fuel injection pulse width (being basic fuel injection amount), and, determine total fuel injection quantity at last according to signal correction fuel injection quantitys such as circulating water temperature, intake temperature, suction pressures.
(2), injection timing control: adopt the multi-point sequent fuel injection, ECU also will be controlled at the best time with injection time according to the ignition order of each cylinder of motor, so that fuel oil fully burns except the control fuel injection quantity.
(3), interrupt fuel feeding control: the control of slow-speed of revolution pattern oil-break: when engine speed surpass maximum speed 80% the time, ECU interrupts oil spout automatically, recovers oil spout when engine speed is lower than 80% certain value of maximum speed.
Hypervelocity oil-break control: when engine speed surpassed safe speed of rotation or surpasses the maximum speed of setting, ECU interrupted oil spout automatically, was lower than until engine speed and recovered oil spout when safe speed of rotation certain value and rotating speed are lower than the maximum speed certain value.
Engine oil pressure alarm limit quick-break oil: if oil pressure does not reach specified value, engine speed can be limited, and when surpassing limits value, ECU interrupts oil spout automatically, recovers oil spout when engine speed is lower than the limits value certain value.
Engine overheat speed limit oil-break: if engine overheat, engine speed can be limited, and when surpassing limits value, ECU interrupts oil spout automatically, recovers oil spout when engine speed is lower than the limits value certain value.
(4), fuel pump control
After pressing enable switch, the work of ECU control fuel pump, if this moment, motor was inoperative, ECU control in 3 seconds cut-out of fuel pump.In engine start and operation process, ECU control fuel pump runs well.
Wherein, interrupt control routine is: program entry 01 → system initialization 02 → main program 03, if not, does returning 02 → 14 → interrupt identification removing, 15 → two-way crankshaft signal that interrupts entering the mouth have not? 16 → be, control ignition, oil spout 17 → as if 16 not, timer interruption 18 → be, timing handles 19 → if 18 not, declare cylinder signal 20 → be, declare cylinder to handle 21 → if 20 not, communication 22 → be, communication handles 23 → and be to withdraw from 24 →, withdraw from 24 if 22 not.
ECU includes interrupt control routine because of electronic control unit, make its with form no power control system with other related sensor, final controlling element, this system can be after the motor boat driver unclamps throttle, continue to turn by increasing certain thrust, if the driver is the control handgrip when increasing throttle, will change the sharp turn, no throttle system does not play a role when conventional speeds and motor stop being lower than.In case tail-off, motor boat will no longer be handled handgrip and react, and open throttle or will reach towing speed up to the driver.Towing speed is meant and can orders about the corresponding engine speed that motor boat is advanced with minimum speed in water, in general, motor boat in water be with the minimum speed about 1km/h or below, corresponding engine speed is set at 1600-1700 rev/min.
2, IGNITION CONTROL
(1), ignition advance angle control: during engine running, ECU is according to the rotating speed and the load signal of motor, calculate the ignition advance angle under the corresponding operating mode, and revise ignition advance angle, obtain the ignition timing an of the best at last according to the water temperature of motor, intake temperature, throttle position etc.A certain predetermined angle before ignition timing, the elementary energising of ECU control ignition coil, when arriving the ignition timing angle, ECU cut-out point fire coil primary current also induces the spark plug sparking that high-tension electricity makes respective cylinder in secondary winding, light mixed gas.
(2), current"on"time (ignition closed angle): control ignition coil primary circuit need guarantee enough big electric current when disconnecting, so that secondary winding produces sufficiently high voltage.Meanwhile, for preventing that current"on"time, the long spark coil that makes was crossed cause thermal damage, ECU is according to signals such as battery tension and engine speed, the current"on"time of control ignition coil primary circuit.
3, no throttle control (OTS)
No throttle is handled (OTS) system: when motor boat was drained the oil a lever operation motor boat in the process of moving, ECU control idle motors was regulated the idling throttle opening and is kept engine speed, kept part thrust and turned assisting.
As Fig. 3, no Throttle Opening Control program is: program entry 01 → system initialization 02 → main program 03, if not, return 02 → sensors A D sampling and comprise that steering shaft rotation 04 → numerical control place amount 05 → no Throttle Opening Control inlet 06 → throttle unclamps not entirely? 07 → be, greater than towing speed? 08 → be to calculate rotating speed of target rate of descent 09 → by above target speed value control idle valve running 10 → finish 11 according to the steering shaft sensor sample; If 07 is not, then enter 11; If 08 is not, then enter 11.
Electric-controlled gasoline motorboat engine work system of the present invention has working procedure as follows:
During fuel oil supply system work, electric fuel punp picks up fuel oil in fuel tank, and pressurization is after fuel filter elimination impurity, and pressure regulator is adjusted pressure, and make excessive fuel oil still return petrol tank, be dispensed into oily rail, oil sprayer through transport pipe then; The instruction that oil sprayer sends according to electronic control unit ECU sprays into each intake manifold with an amount of fuel oil, supplies with process thereby finished oil spout.
Electronic control unit ECU is the control and the command center of engine system.It comprises singlechip CPU, the sensor interface circuitry (input circlult) that links to each other with the input end of this single-chip microcomputer, the control executor circuit (output circuit) that is connected with the output terminal of single-chip microcomputer, and be stored in the main control software in the program storage (ROM and RAM) and embed MAP data segment in this control software.During engine operation, the signal that electronic control unit provides according to various sensors, computational methods by program of depositing in the storage and regulation, calculate the optimum value of the various parameters of control engine operation, as fuel injection quantity, time of ignition etc., and change result calculated the various control signals of control engine operation into, by the operation of final controlling element control motor.
When A, motor operation, main control software in the single-chip microcomputer caller storage in the electronic control unit, at first gather the engine crankshaft position signal by sensor interface circuitry, utilize camshaft-position signal to declare cylinder again, find out the corresponding position of the fulcrum of going up of each cylinder, and, press the setting value that MAP figure calculates fuel injection quantity then according to the residing state of algorithm judgement motor in the control software; Motor required IGNITION CONTROL plotted curve under various operating modes is called MAP figure.
B, single-chip microcomputer are passed to the control executor circuit with described revised fuel injection quantity as setting value, this circuit system is exported control signal to oil sprayer according to the result of computing, oil sprayer is realized the accurately endurance of control oil spout again according to the pulse width of this signal.
C, in single-chip microcomputer work, operation internal control software, receive in real time and gather suction pressure and temperature signal by its sensor interface circuitry, the fuel injection quantity that single-chip microcomputer transmits is revised, the setting value of controlled oil mass, and the position signal of acquisition controlling closure, with setting value, by the total fuel injection quantity of digital algorithm control of its control software inhouse;
D, single-chip microcomputer also pass to host computer with the engine signal gathered and fuel injection signal and throttle position, and host computer shows and revise the partial parameters of host scm inside by curve or data mode, the optimization control process;
E, when chance failure appears in control procedure, host scm is by failure indicating circuit and inner fault treatment software, the type of indication fault is also handled by corresponding failure, up to the operation of shutting engine down.
The working procedure of no throttle control system OTS in the electric-controlled gasoline motorboat engine work system of the present invention is as follows: when motor boat is decontroled throttle lever in the process of moving and is handled, the OTS system can continue to keep some thrusts come controlling party to.But the OTS system can not play a role being lower than under the situation that base speed or motor stop, in case engine retard, hull will be no longer produces reaction to the control of handgrip, up to recovering to open the throttle or motor boat recovers towing speed.
When motor boat was decontroled the throttle lever manipulation in driving process, ECU was by gathering throttle position signal, and the control idle motors is regulated the idling throttle opening and kept engine speed, keeps part thrust and turns with assistance.
In the electric control fuel oil jet system of the present invention, adopted the two-way crankshaft position sensor, 180 degree of being separated by are installed on the crankshaft-position signal collection dish of motor.It is the reliable assurance that this motor can realize reaching high rotating speed 10000rpm.When motor is just started working, engine electronic control unit is by gathering the two-way crankshaft-position signal, utilize the position signal of camshaft to declare cylinder again, find out the last position of the fulcrum of corresponding each cylinder, and, press the setting value that MAP figure calculates fuel injection quantity then according to the residing state of algorithm judgement motor in the control software; By fuel oil supply system with fuel oil real-time be transported to oil sprayer, meanwhile, suction pressure and temperature signal that engine electric-controlled unit is also sent here according to sensor circuit are revised fuel injection quantity, determine total fuel injection quantity at last, control the normal operation of motor accurately.
Accompanying drawing 2 is that ECU (Electrical Control Unit) (ECU) hardware circuit is formed skeleton diagram.This forms skeleton diagram by various sensors, and various final controlling element and electronic control unit three parts are formed.In Motronic control maps control fuel injection system, sensor detects the information of reflection engine operating condition when motor moves, and Input Control Element carries out the foundation of computing or the benchmark of control as control unit.Sensor commonly used mainly contains coolant temperature, suction pressure temperature, throttle opening, camshaft position back pass sensor, crankshaft position sensor, direction post position transducer, switching signal (stop switch, hand button switch, Oil pressure switch, thermoswitch, inversion switch) sensor.
ECU (Electrical Control Unit) is by microprocessor (CPU), storage (ROM and RAM), and input/output interface (I/O), A/D converter (A/D) is formed.During engine operation, the signal that ECU (Electrical Control Unit) provides according to various sensors, computational methods by program of depositing in the storage and regulation, calculate the optimum value of the various parameters of control engine operation, as fuel injection quantity, time of ignition etc., and change result calculated the various control signals of control engine operation into, by the operation of final controlling element control motor.
In the engine electric spray control system, the effect of actuator is the compulsory exercise of finishing under the effect of the control signal that control unit sends.Common actuator mainly contains oil sprayer, idle valve, fuel pump relay, ignition controler, fault indicating lamp.
Accompanying drawing 3 is single-chip microcomputer main programs and does not have the Throttle Opening Control flow chart: after ECU (Electrical Control Unit) is started working, main program in the single-chip microcomputer receives the AD sampled signal, when detecting the voltage signal of steering shaft rotation by direction post position transducer, main program just enters no throttle control system automatically.Detect the throttle position signal of this moment by throttle position sensor, if the throttle position voltage that detects this moment during greater than 0V, no throttle control system is end automatically just; If the throttle position voltage that detects this moment is when being 0V, main program is again by crankshaft position sensor detection of engine tach signal, is lower than towing speed if detect this moment engine speed, and no throttle control system is end automatically just; If the engine speed that detects this moment is greater than towing speed, no throttle control system just calls the AD sampled value that main program sends here according to direction post position transducer and calculates the speed that the current goal rotating speed descends, control the running step number of idle valve by the target speed value that calculates, no throttle control system is started working.
Accompanying drawing 4 is singlechip interruption subroutine and high speed operation flow chart: after ECU (Electrical Control Unit) is started working, and the control software in the single-chip microcomputer executive memory in the management control unit.This control software is at first by sensor interface circuitry pick-up transducers signal, detect the signal value of two-way CRANK SENSOR, and utilize interrupt routine to handle, utilize the signal value of CMPS Camshaft Position Sensor to declare cylinder again, and according to behind the residing state of algorithm judgement motor in the control software, press MAP figure (motor required fuel injection quantity under various operating modes, the IGNITION CONTROL plotted curve, be called MAP figure) calculate the setting value of fuel injection quantity, according to coolant temperature and intake temperature fuel injection quantity is revised simultaneously.
Native system also has four oil-break control modes:
Slow-speed of revolution pattern oil-break control: when engine speed surpass maximum speed 80% the time, ECU interrupts oil spout automatically, recovers oil spout when engine speed is lower than 80% certain value of maximum speed.
Hypervelocity oil-break control: when engine speed surpassed safe speed of rotation or surpasses the maximum speed of setting, ECU interrupted oil spout automatically, was lower than until engine speed and recovered oil spout when safe speed of rotation certain value and rotating speed are lower than the maximum speed certain value.
Engine oil pressure alarm limit quick-break oil: if oil pressure does not reach specified value, engine speed can be limited, and when surpassing limits value, ECU interrupts oil spout automatically, recovers oil spout when engine speed is lower than the limits value certain value.
Engine overheat speed limit oil-break: if engine overheat, engine speed can be limited, and when surpassing limits value, ECU interrupts oil spout automatically, recovers oil spout when engine speed is lower than the limits value certain value.
In addition, use by the rotatory handling of electric-controlled gasoline motor boat of the present invention, also be provided with a plug-in type hand button switch gear.Promptly one socket hole is set, and is furnished with a corresponding inserting member on the rotatory handling side; When inserting member inserted socket hole, its control circuit was connected, and when transfering to inserting member, its control circuit disconnects; The other end of inserting member links to each other with motor boat driver's wrist.Hand button switch is connected with switch starter; In parallel with stop switch.After hand button switch was plugged, ECU could control engine start, when hand button switch is thrown off, made engine stoping operation immediately.Open and inserting member inserted socket hole before the ship, when inserting member when socket hole is thrown off, drowning from motor boat as the operator, motor will automatically cut out.

Claims (11)

1. the electric-controlled work system that is used for motorboat with petrol engine, comprise gas handling system, fuel oil supply system, ignition system, also comprise electronic control system, described electronic control system comprises Sensor section, electronic control unit ECU (7) and final controlling element part, and the parts of described Sensor section all are connected with electronic control unit ECU (7), and the parts of described final controlling element part all are connected with electronic control unit ECU (7); Described electronic control unit ECU (7) includes singlechip CPU; It is characterized in that: described electronic control unit ECU (7) comprises and has or not the throttle control program, described no throttle control program comprises carries out following controlling method: after ECU (Electrical Control Unit) is started working, main program in the described single-chip microcomputer receives the AD sampled signal, when detecting the voltage signal of steering shaft rotation by direction post position transducer, main program just enters no throttle control system automatically; Detect the throttle position signal of this moment by throttle position sensor, if the throttle position voltage that detects this moment during greater than 0V, no throttle control system is end automatically just; If the throttle position voltage that detects this moment is when being 0V, main program is again by crankshaft position sensor detection of engine tach signal, is lower than towing speed if detect this moment engine speed, and no throttle control system is end automatically just; If the engine speed that detects this moment is greater than towing speed, no throttle control system just calls the AD sampled value that main program sends here according to direction post position transducer and calculates the speed that the current goal rotating speed descends, control the running step number of idle valve by the target speed value that calculates, no throttle control system is started working.
2. electric-controlled work system according to claim 1, it is characterized in that, described Sensor section comprises throttle position sensor (1) on the suction tude that is installed in gas handling system and suction pressure, temperature transducer (2), be installed in CMPS Camshaft Position Sensor (4), cylinder body cooling-water temperature transmitter (8), Oil pressure switch signal (9), crankshaft position sensor (11) on the motor (13), be installed in tail gas temperature-sensitive switching signal (5), direction post position transducer (21) and shipwreck switch sensor (23) on the engine exhaust pipe; Described final controlling element partly comprises electric fuel punp (14), oil sprayer (19), idle valve (20), ignition controler (3), fault indicating lamp (24).
3. electric-controlled work system according to claim 2 is characterized in that, described crankshaft position sensor (11) has two, and described two crankshaft position sensors are 180 degree and install.
4. electric-controlled work system according to claim 1, it is characterized in that, described fuel oil supply system, comprise electric fuel punp (14), fuel tank (15), fuel filter (17), pressure regulator (18), oil sprayer (19) and oily rail (16), electric fuel punp (14) is positioned at fuel tank (15), and fuel filter (17) is positioned between oily rail (16) and the electric fuel punp (14), and pressure regulator (18) connects electric fuel punp (14), oil rail (16) is connected with oil sprayer (19), and described oil sprayer (19) is exactly a described final controlling element part oil sprayer (19).
5. electric-controlled work system according to claim 1, it is characterized in that, described electronic control unit ECU (7) also comprises input circlult, rom memory, the RAM that is used to connect Sensor section and is used to be connected the output circuit of final controlling element part, the two ends of described singlechip CPU connect input circlult and output circuit, and rom memory, RAM are connected with singlechip CPU.
6. according to each described electric-controlled work system of claim 1-5, it is characterized in that described electronic control unit ECU (7) includes interruption oil spout control program.
7. electric-controlled work system according to claim 6, it is characterized in that, described interruption oil spout control program comprises carries out following controlling method: at first by sensor interface circuitry pick-up transducers signal, detect the signal value of two-way CRANK SENSOR, and utilize interrupt routine to handle, utilize the signal value of CMPS Camshaft Position Sensor to declare cylinder again, and according to behind the residing state of algorithm judgement motor in the control software, press the setting value that MAP figure calculates fuel injection quantity, according to coolant temperature and intake temperature fuel injection quantity is revised simultaneously.
8. a motorboat with petrol engine is characterized in that, it is furnished with each described electric-controlled work system as claim 1-5.
9. motorboat with petrol engine according to claim 8 is characterized in that, described electronic control unit ECU (7) includes interruption oil spout control program; Described interruption oil spout control program comprises carries out following controlling method: at first by sensor interface circuitry pick-up transducers signal, detect the signal value of two-way CRANK SENSOR, and utilize interrupt routine to handle, utilize the signal value of CMPS Camshaft Position Sensor to declare cylinder again, and according to behind the residing state of algorithm judgement motor in the control software, press the setting value that MAP figure calculates fuel injection quantity, according to coolant temperature and intake temperature fuel injection quantity is revised simultaneously.
10. motor boat according to claim 8 is characterized in that, by described motor boat rotatory handling, also is provided with a plug-in type hand button switch gear.
11. motor boat according to claim 9 is characterized in that, by described motor boat rotatory handling, also is provided with a plug-in type hand button switch gear.
CN2008101615370A 2008-09-24 2008-09-24 Electric-controlled work system for motorboat with petrol engine Active CN101363381B (en)

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