CN201137527Y - Engine electric control unit - Google Patents
Engine electric control unit Download PDFInfo
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- CN201137527Y CN201137527Y CNU200820078449XU CN200820078449U CN201137527Y CN 201137527 Y CN201137527 Y CN 201137527Y CN U200820078449X U CNU200820078449X U CN U200820078449XU CN 200820078449 U CN200820078449 U CN 200820078449U CN 201137527 Y CN201137527 Y CN 201137527Y
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Abstract
The utility model relates to an engine electric controller, comprising a main control chip, an analog signal input circuit, a switch amount signal input circuit, an input circuit of vehicle speed sensor signal, a cam shaft signal input circuit, a crank shaft signal conversion circuit, a vibration signal processing circuit, a controller local net CAN line communication circuit, a K line communication circuit, a power management circuit, a driving output circuit, an ignition driving circuit, a cooperation chip and an electronic throttle actuator circuit. The utility model can realize the basic control on the engine, support the system of variable throttle VVT and electronic throttle, and support the engine with pressure judgment. Additionally, the hardware resource has reserved ports to expand the functions. The utility model has simple circuit, high integration, high reliability, low cost and compressive function.
Description
Technical field
The utility model relates to field of engine control, is specifically related to a kind of engine electric-controlled unit.
Background technique
ECU (Electronic Control Unit, ECU (Electrical Control Unit)) is one of vehicle electrically controlling system three elements (sensor, final controlling element, ECU (Electrical Control Unit)), is the core component in the vehicle electric control system.The title of different manufacturers ECU (Electrical Control Unit) is not the same, and ECU, German doctor company is called EDU as Japan electric coating company, and prestige inspires confidence in company and also claims EDU, is called control unit of engine (Engine Control Unit) etc. in addition.The fundamental function of ECU is to make engine control at optimal combustion state all the time under real-time working condition and extraneous operating conditions.ECU is widely used in the various automatical control systems, for example: electric-controlled co-rail system, electronic speed regulator, electronic control dispensing pump, electrically-controlled pump nozzle etc.ECU calculates the information that various sensors are sent here according to the program of design in advance, after handling, each parameter limit on the voltage level that allows, is sent to each relevant actuator again, carries out various expectant control functions.Microprocessor calculates injection time, fuel injection quantity, fuel injection rate and injection timing etc. according to input data and the data that are stored among the MAP.And these parameters are converted to time dependent electric weight with motor operation coupling.Rotating speed, load based on motor calculate and handle through ECU, send action command to oil sprayer, oil feed pump etc., make each cylinder that only fuel injection quantity, fuel injection rate and injection timing all be arranged, and guarantee that each cylinder carries out best burning.
The element circuit of the dynamo-electric control of four-cylinder gasoline at present is complicated, and this mainly is to design according to the demand of four-cylinder gasoline car at present.The peripheral sensor of at present general four-cylinder gasoline engine has: 1, cooling-water temperature sensor; 2, suction pressure/intake flow sensor; 3, throttle position sensor; 4, intake air temperature sensor; 5, evaporator temperature sensor; 6, fuel level sensor; 7, acceleration transducer; 8, CMPS Camshaft Position Sensor; 9, crankshaft position sensor; 10, vehicle speed sensor; 11, preceding lambda sensor; 12, post oxygen sensor; 13, quick-fried vibration sensor (optional); 14, pedal position sensor (being used for electronic throttle system); 15, Variable Valve Time VVT oil pressure sensor (being used to system) with the VVT function; 16, VVT oil temperature sensor (being used to system) with the VVT function.Peripheral switch input has: 1, parking/neutral switch; 2, air condition compressor switch; 3, air-conditioning switch; 4, power-assisted steering switch; 5, Der StandlichtScheinwerfer und Parkleuchtenschalter.Outside final controlling element has: 1, direct current generator (being used for electronic throttle system); 2, oil sprayer; 3, spark coil; 4, Valve EGR; 5, high speed refrigerating fan; 6, low speed refrigerating fan; 7, tachometer; 8, main relay; 9, fuel pump relay; 10, preceding oxygen heating stick; 11, back oxygen heating stick; 12, air condition compressor relay; 13, fault indicating lamp; 14, discharging fault indicating lamp; 15, water-thermometer; 16, VVT final controlling element (being used to system) with the VVT function; 17, VVT FP Fuel Pump Relay (being used to system) with the VVT function.Simultaneously, the four-cylinder gasoline engine ECU (Electrical Control Unit) should also have the function that CAN (Controller Area Network, control area net) line communication is communicated by letter with the K line as requested.
Because these specific (special) requirements, ECU selects the special-purpose single-chip microcomputer of electrical control system for engine usually for use, these single-chip microcomputers have 8 single-chip microcomputers, 16 single-chip microcomputers, the branch of 32 single-chip microcomputers, wherein, 8 single-chip microcomputers since on its Processing capacity and the sheet restriction of resource generally can only be used in the simple electrical control system for engine of function such as motorcycle, though 32 single-chip microcomputer Processing capacities are strong, aboundresources on the sheet, but because costing an arm and a leg, it in low and middle-grade cars, goes back difficult popularizing at present, so in present electrical control system for engine, 16 single-chip microcomputers still are the main flow controller, but go back ubiquity circuit more complicated, the low and high problem of cost of systemic-function.
The model utility content
The purpose of this utility model provides that a kind of circuit is terse, level of integration is high, reliability is high, cost is lower, function engine electric-controlled unit more fully.
For achieving the above object, the utility model adopts following technological scheme:
A kind of engine electric-controlled unit comprises:
Main control chip;
With the analog signal input circuit that described main control chip carries out data communication, described analog signal input circuit comprises: throttle position sensor input signal circuit, pedal position sensor input signal circuit, oil temperature sensor input signal circuit, oil pressure sensor input signal circuit;
The switching value signal input circuit, the input circlult of vehicle speed sensor signal, camshaft signal input circlult, the crankshaft signal change-over circuit that carry out data communication with described main control chip;
The quick-fried signal processing circuit of shaking of carrying out data communication with described main control chip;
The controller local area network line communication circuit of carrying out data communication with described main control chip;
The K line communication circuit of carrying out data communication with described main control chip;
The electric power management circuit that carries out data communication with described main control chip;
The driving output circuit that carries out data communication with described main control chip;
The ignition drive circuit that carries out data communication with described main control chip;
The electronic type closure executive circuit that carries out data communication with described main control chip.
Wherein, this engine electric-controlled unit also comprises association's process chip of carrying out data communication with described main control chip, described association process chip is used to realize pressure cylinder decision, and described crankshaft signal change-over circuit, analog signal input circuit are connected with described association process chip respectively.
Wherein, described electronic type closure executive circuit is connected with motor and is used to control the motor forward or reverse.
Described analog signal input circuit also comprises: the fuel level sensor input signal circuit that is made of pull-up resistor and π shape eliminator, the intake air temperature sensor input signal circuit that constitutes by pull-up resistor and π shape eliminator, the evaporator temperature sensor input signal circuit that constitutes by pull-up resistor and π shape eliminator, the cooling-water temperature sensor input signal circuit that constitutes by pull-up resistor and π shape eliminator, the acceleration sensor input signal circuit that constitutes by pull-up resistor and π shape eliminator, the lambda sensor input signal circuit that constitutes by bleeder circuit and π shape eliminator, wherein, oil temperature sensor input signal circuit is made of pull-up resistor and π shape eliminator or pull down resistor and π shape eliminator, oil pressure sensor input signal circuit is made of pull-up resistor and π shape eliminator or pull down resistor and π shape eliminator, throttle position sensor input signal circuit is made of pull down resistor and π shape eliminator, pedal position input signal circuit is made of pull down resistor and π shape eliminator.
Wherein, described analog signal input circuit also comprises air inlet pressure sensor input signal circuit, described air inlet pressure sensor input signal circuit is made of the π shape eliminator of two cascades, one of them inserts main control chip and is used for measuring air inflow, and another has received the standard that is used for pressure cylinder decision on AD sampling pin of coprocessor.
Wherein, described oil temperature sensor input signal circuit is a two-way, and described oil pressure sensor input signal circuit is a two-way.
Wherein, described controller local area network line communication circuit comprises that a slice or two are used for K line and described main control chip serial ports are carried out the data converted conversion chip.
Wherein, described data transfer chip is 82C250, and wherein the 6th of 82C250 the and the 7th pin connects a common mode inductance, resistance unit of described common mode inductance output termination; The 8th pin of described 82C250 connects a slope resistance unit.
Wherein, described driving output circuit comprises driving chip CJ910 and CJ945.
Wherein, described main control chip is that model is the control chip of ST10F273M.
Technique scheme only is an optimal technical scheme of the present utility model, have following advantage: the utility model engine electric-controlled unit can be controlled each circuit according to each sensor signal effectively by master chip and peripheral circuit, thereby control fuel injection quantity, fuel injection rate and the injection time etc. of motor better, except the basic controlling that can satisfy motor, also support the system of Variable Valve Time VVT, electronic throttle, and can support pressure declare the motor of cylinder, in addition hardware resource also have the port reserved can expansion other function.The utility model circuit is terse, level of integration is high, reliability is high, cost is lower, function more comprehensively.
Description of drawings
Fig. 1 is a kind of engine electric-controlled unit structural representation of the utility model embodiment;
Fig. 2 A is a kind of analog signal input circuit figure of the utility model embodiment;
Fig. 2 B is a kind of analog signal input circuit figure of the utility model embodiment;
Fig. 2 C is a kind of analog signal input circuit figure of the utility model embodiment;
Fig. 3 is a kind of electric power management circuit figure of the utility model embodiment;
Fig. 4 is a kind of switching value signal input circuit figure of the utility model embodiment;
Fig. 5 is a kind of vehicle speed sensor signal output apparatus figure of the utility model embodiment;
Fig. 6 is a kind of camshaft signal input circlult figure of the utility model embodiment;
Fig. 7 A is a kind of main control chip circuit diagram of the utility model embodiment;
Fig. 7 B is a kind of main control chip circuit diagram of the utility model embodiment;
Fig. 8 is a kind of association process chip circuit diagram of the utility model embodiment;
Fig. 9 is a kind of crankshaft signal change-over circuit figure of the utility model embodiment;
Figure 10 is the utility model embodiment's a kind of quick-fried signaling conversion circuit figure that shakes;
Figure 11 is the utility model embodiment's an a kind of quick-fried vibration sensor output signal schematic representation;
Figure 12 is a kind of CAN communication circuit figure of the utility model embodiment;
Figure 13 is a kind of driving output circuit figure of the utility model embodiment;
Figure 14 is that a kind of igniting of the utility model embodiment drives input circlult figure;
Figure 15 is the utility model embodiment's electronic type closure executor circuit figure.
Embodiment
Below in conjunction with drawings and Examples, embodiment of the present utility model is described in further detail.Following examples are used to illustrate the utility model, but are not used for limiting scope of the present utility model.
Fig. 1 is a kind of engine electric-controlled unit structural representation of the utility model embodiment.Engine electric-controlled unit of the present utility model comprises: main control chip; And the analog signal input circuit that carries out data communication with described main control chip, the switching value signal input circuit, the input circlult of vehicle speed sensor signal, the camshaft signal input circlult, the crankshaft signal change-over circuit, the quick-fried signal processing circuit of shaking, controller local area network CAN line communication circuit, K line communication circuit, electric power management circuit, drive output circuit, ignition drive circuit, electronic type closure executive circuit, engine electric-controlled unit also comprises association's process chip of carrying out data communication with main control chip, electronic type closure executive circuit is connected with motor, the control of electronic type closure is realized the control that rotates and reverse of motor by main control chip.Wherein the intake pressure sensor signal in the analog signal input circuit (MAPs) has been made different eliminators twice, wherein one the tunnel be used in and be used for measuring air inflow in the main program, and the standard that is used for pressure cylinder decision on the AD sampling pin of association's process chip has been received on another road.The 1st pin of association's process chip has been received on the crankshaft signal by one 0 Europe resistance, this signal is used for pressure cylinder decision usefulness in association in the process chip, and the resistance of putting 0 Europe here is the work that can stop to assist the pressure cylinder decision in the process chip in camshaft is declared the system of cylinder.
Be depicted as a kind of analog signal input circuit figure of model utility embodiment as Fig. 2 A.Wherein the characteristic of intake air temperature sensor input signal (TIAs), evaporator temperature sensor input signal (EVAPs), cooling-water temperature sensor input signal (TCOs), oil level input signal (FUEL-IN) is identical, so circuit also has conformity, be that example describes with intake air temperature sensor (TIAs) input signal now.Intake air temperature sensor is actual to be a thermistor, an end ground connection of thermistor, and an end is signal output intake air temperature sensor input signal TIAs, directly is connected with main control chip.So main control chip will provide a pull-up resistor R72, the value of pull-up resistor is relevant with the characteristic of thermistor, and the maximum value of thermistor is big more, and the value of pull-up resistor is also just big more.Also will be after drawing on the intake air temperature sensor input signal TIAs process through a π shape eliminator of forming by resistance R 71, capacitor C 92, C38, by the processed output intake air temperature sensor of TIAs after filtering input signal TIA, directly insert on the AD sampling pin of main control chip ST10F273M.π shape eliminator is a kind of basic RC eliminator, and this circuit structure is simple and very effective for the filtering high-frequency signal.
The structural requirement acceleration transducer signals (ACCE) of acceleration transducer is needing to move the 12V power supply on the ECU, VCC1 is the electric power network of a 12V in the utility model.
So it is 2% 5V power supply TMAPVCC that system provides a precision in addition the suction pressure sensor for the higher system of required precision of intake pressure sensor signal and throttle position sensor signal and pedal position sensor signal, as Fig. 3, shown in Fig. 2 A and Fig. 2 B, for throttle position sensor and pedal position sensor also provide a precision separately is 2% 5V power supply TPSVCC, so ECU needn't be suction pressure (MAPs) signal again, two-way throttle position (TPSs, TPS1) signal, two-way pedal position (SPS1, SPS2) signal adds and draws resistance, as long as carry out dividing potential drop, also to carry out the filtering of π shape simultaneously and add a pull down resistor.
Oil temperature sensor (OILTEM) signal of Variable Valve Time (VVT) and oil pressure sensor (OILPRE) signal can be selected to connect to draw resistance or connect pull down resistor according to the characteristics of signals of peripheral sensor.
Because compatible pressure cylinder decision of the utility model and camshaft are declared two kinds of patterns of cylinder, so making different eliminators twice for intake pressure sensor signal (MAPs), wherein one the tunnel be used in and be used for measuring air inflow in the main program, and the standard that is used for pressure cylinder decision on the AD sampling pin of coprocessor has been received on another road.The MAPs signal is separated filtering reduced interfering with each other between primary processor and the coprocessor.
The sampling of oxygen sensor signal need provide the pump electric current, shown in the preceding oxygen sensor signal VLSD among Fig. 2 C and two networks of post oxygen sensor signal VLSU.The pump electric current of wherein preceding oxygen and back oxygen is realized by the 101st and the 102nd pin control VLSDk and the VLSUk of primary processor respectively.Primary processor is opened the pump electric current, just can measure oxygen sensor signal, otherwise does not detect oxygen sensor signal.Before oxygen the same with the circuit theory of post oxygen sensor signal, below former oxygen be the example introduction.Oxygen sensor signal has carried out dividing potential drop by resistance R 48 and R51 after entering ECU because the value of R48 is 5.11K, so the value of the R51 ECU that is 4.75K when lambda sensor does not have work measure oxygen sensor signal be about 0.47V.Oxygen sensor signal has carried out the filtering of π shape equally before entering primary processor.
Fig. 4 is the switching value signal input circuit.The utility model is supported the input of five way switch amounts, and three road band pull down resistors are wherein arranged, and is respectively air condition compressor switch input signal (KACCIN) circuit, Der StandlichtScheinwerfer und Parkleuchtenschalter signal (KLAMP) circuit and air-conditioning switch input signal (KACIN) circuit.Two-way band pull-up resistor is respectively parking/neutral switch signal (KPN) circuit and servosteering switching signal (KPSTE) circuit.Wherein the triode Q12 of NPN has played the effect of reversal protection.
Fig. 5 is the input circlult of vehicle speed sensor signal, vehicle speed sensor to frequency signal that ECU provides a 0V or 12V through on be input to the main control chip of ECU after drawing, diode D4 and triode Q10 play the effect of reverse-phase protection.Simultaneously, Q10 exports to provide to tachometer and draws power supply.
Fig. 6 is the camshaft signal input circlult.Signal CAMs is from camshaft-signal sensor, through on draw with filtering after, require camshaft signal can add phase inverter signal to be carried out anti-phase or not anti-phase, use for main control chip after treatment then according to the installation relation of peripheral camshaft and main program.The utility model can be declared cylinder and two kinds of patterns of pressure cylinder decision by the supporting block axle, and the function of pressure cylinder decision realizes by coprocessor, as shown in Figure 8.The pattern that the pattern that selection pressure is declared cylinder still selects camshaft to declare cylinder is selected by selecting weldering resistance R 26 or R15, if weldering R26, R35, R36, C67 do not weld R15, then this system is the pattern of pressure cylinder decision, otherwise declares the pattern of cylinder for camshaft, as Fig. 8, Fig. 7 A, 7B, shown in Figure 2.
The crankshaft signal change-over circuit as shown in Figure 9.Crankshaft signal input CRKA, CRKB are respectively by the input of 32,33 pin, and crankshaft signal CRK is exported by 34 pin.Native system is supported the input of magnetoelectric crankshaft signal, is finished by the accommodation function module of CJ910 for this Signal Processing, and the magnetoelectric crankshaft signal will be through the filtering of resistor-capacitor unit before entering CJ910.Crankshaft signal through CJ910 output after the conversion is the frequency signal of 0V or 5V.
Figure 10 is the quick-fried signal processing circuit of shaking.TPIC8101 is a quick-fried signal processing chip that shakes of Twin channel, so native system has only a quick-fried vibration sensor only to use the passage of TPIC8101, but the native system circuit is changed the system that promptly can support two quick-fried sensors a little.Figure 11 is the schematic representation of quick-fried vibration sensor output signal, and expression has the quick-fried signal that shakes to take place between the dotted line.TPIC8101 is the irregular quick-fried signal conversion of shaking an analogue signal, is input to main control chip.Main control chip is by the work of spi bus control TPIC8101, and TPIC8101 also needs a CLK clock, and this signal is provided by the 81st pin of main control chip.
CAN line communicating circuit as shown in figure 12.CAN (Controller Area Network) is a controller local area network, is one of most widely used Field bus in the world.CAN appears in the automotive industry at the end of the eighties at first, is proposed at first by German Bosch company.At that time, because the Consumer is more and more for the requirement of automobile function, and the realization of these functions was based on electronic operation mostly, and this just makes the communication between the electronic equipment become increasingly complex, and means the more signaling line that connects of needs simultaneously.The initial motivation that proposes the CAN bus is exactly in order to solve the communication between the electric control device huge in the Hyundai Motor, to reduce ever-increasing signaling line.So they have designed a single network-bus, all peripheral components can be articulated on this bus.1993, CAN became international standard ISO11898 (high-speed applications) and ISO11519 (low-speed applications).
At present, CAN extensively is designed as the microcontroller communication in the automotive environment, and exchange message between vehicle-mounted each electric control device ECU forms the Vehicle Electronic Control network.Such as: in engine management system, gearbox control, instrument equipment, the electronics trunk system, all embed the CAN control gear.CAN is a kind of serial communication bus of many master modes, and basic design code requires that high bit rate is arranged, high anti-electromagnetic interference, and can detect any mistake of generation.When signal transmission distance reached 10Km, CAN still can provide the data transfer rate up to 50Kbit/s.
The utility model is supported two CAN communications.Two-way CAN communication network is structurally in full accord.82C250 can change the serial ports of CAN bus and single-chip microcomputer, has special CAN communication function module on the main control chip, and corresponding pin is respectively the 89th pin, the 92nd pin (see figure 7) and the 90th, 91 pins.Be the example explanation with one road CAN communication circuit wherein below.The 1st pin of 82C250 links to each other with the 92nd pin of main control chip, the 4th pin links to each other with the 89th pin of main control chip, the the 6th and the 7th pin of 82C250 is the CAN EBI, for filtering interfering, connect a common mode inductance on the CAN EBI, according to the requirement of CAN bus, each CAN bus termination needs the resistance in one 120 Europe, shown in the R58 among Figure 12, R57.The 8th pin of 82C250 also needs a slope resistance that is about 24K Europe, shown in the R56 among Figure 11.
The utility model provides K bus communication mode, and ECU has an order wire that the K line is external, and wherein the K line is used for the bidirectional data transfers of self diagnosis instrument to ECU, can be used for the initialization of serial communication.The conversion of K bus of the present utility model and serial ports level is realized by the accommodation function module of CJ910.The 30th pin of CJ910 is the K bus port, and the K bus termination of other of low-pass filter circuit forming by R200 and C250 and outside links to each other, and while K bus also needs by moving 12V on the resistance R 201.
Power management part of the present utility model is realized by the special module of CJ910; as shown in Figure 3; VBAT is a battery power; receive the 20th pin of CJ910 by a reversal protection diode D1; while is in order to ensure the reliability of circuit; the utility model has also adopted the TVS pipe D3 of a 1500W/22V that power supply chip is protected, and with D3 and the capacitor C 7 that connects and C12 battery power is carried out filtering.Ignition key signal VIGK links to each other with the 21st pin of CJ910 by R209, and C8, C28 and R210 have carried out filtering to VIGK.Simultaneously, main control chip need know whether vehicle has the ignition key signal, carries out the AD sampling so the ignition key signal has been received the 28th pin of main control chip after by R31 and R30 dividing potential drop.The 17th pin of CJ910 is a high-side driver output pin, and the output of this pin offers CJ945 (as shown in figure 13) as a 12V power supply VCC1 and as drawing power supply on tachometer, speed of a motor vehicle input signal, parking neutral gear signal, power-assisted steering signal, acceleration transducer, the K line signal in the utility model.It is that 2% output current is the 5V power supply of 600mA that the 24th and 23 of CJ910 provides a precision, and this power supply is used for to the power supply of the 5V power supply except that the AD reference voltage on the plate.It is 2% 5V power supply TPSVCC and TMPVCC for the 130mA precision that the 7th and the 13rd pin of CJ910 provides two electric currents, and this two power supplys are respectively through offering intake temperature pressure transducer and throttle position sensor, pedal position sensor after the filtering.The 27th pin of CJ910 can provide a reset signal, and level output need add a pull-up resistor R40 so this pin is for opening Lou.
VBAT is the battery power that 12V is often arranged in the utility model, and before ignition key powered on, CJ910 was in stop mode, and all functions module is not moved.Back CJ910 starts working as the input of ignition key signal, enters mode of operation, 17 pins output 12V power supply, 23,24,7 and 13 pins output 5V power supply.After the ignition key power down, if the 26th pin of CJ910 is low, the 25th pin be height so CJ910 can enter the maintenance pattern, after powering on, the 25th pin of CJ910 is high level, and the 26th pin of CJ910 is subjected to the 16th foot control system of main control chip, controlled by main control chip so whether CJ910 enters the maintenance pattern.All functions all normally continued operation after CJ910 entered the maintenance pattern.If in the maintenance pattern main control chip make the 26th pin of CJ910 be height so CJ910 will finish the maintenance pattern, enter stop mode.
Driving output of the present utility model such as Figure 13 and shown in Figure 9.The power supply that peripheral final controlling element is used in the automobile electric control system mostly is the 12V power supply greatly at present, and needs bigger driving current.Driving function of the present utility model is finished by the driving special module of CJ945 and CJ910, and the driving output that the utility model provides is low side and drives output.The 53rd pin of CJ945 links to each other with the 113rd pin of main control chip, the 55th pin of CJ945 links to each other with the 112nd pin of main control chip, the 54th pin of CJ945 links to each other with the 111st pin of main control chip, these 3 pins have constituted a spi bus, and main control chip reads fault message among the CJ945 by spi bus.The 56th pin of CJ945 links to each other with the 108th pin of main control chip, and main control chip is by the gating of this pin control CJ945.The 31st pin of CJ945 links to each other with the 141st pin of main control chip, and main control chip resets by this pin control CJ945's.The utility model has been used 18 16 passages that drive in the passage of CJ945, has driven 4 oil nozzles, tachometer, Valve EGR, main relay, trouble light, high speed refrigerating fan, low speed refrigerating fan, air condition compressor relay, fuel pump relay, VVT final controlling element OCV valve, VVT FP Fuel Pump Relay, preceding oxygen heating stick, back oxygen heating stick respectively; 4 driving outputs of CJ910 have only used two passages to drive water-thermometer and discharging trouble light respectively, and the driving output that CJ945 and CJ910 had for four tunnel free time can drive other suitable final controlling element as required.
The circuit of igniting driving input as shown in figure 14.Native system is supported the grouping ignition function of 4 cylinder gasoline engines, so the moving output of two-way electricity fireflood is arranged, the driving output principle of this two-way igniting is in full accord, below just with wherein one tunnel explanation.The 53rd pin of main control chip is received the gate pole of Q16 by resistance R 37, and Q16 is an IGBT (Insulated Gate BipolarTransistor, an insulated gate bipolar transistor), its grounded-emitter connection, and collector electrode is controlling the break-make of primary ignition coil.With a current-limiting resistance R38 and a not gate fire signal is sampled, the signal that sampling obtains is received on the 31st pin of coprocessor, is used for detecting whether ignition failure is arranged.
Native system is supported the electronic type closure, and the closure final controlling element realized by CJ220, as shown in figure 15.The 3rd pin IN1 of CJ220 connects the 20th pin of main control chip, the 19th pin IN2 connects the 22nd pin of main control chip, the 2nd pin SF connects the 128th pin of main control chip, the 18th pin DI connects the 129th pin of main control chip, 6th, 7 pins and the 14th, 15 are controlled the anode and the negative terminal of motor respectively, 4th, 5,16 pin are supply pin, the power supply of CJ220 is taken from power supply V-EL behind the main relay, and capacitor C 17 and the resistance R 73 of one 1 megaohm of the 17th pin CP by one 34 nanofarad received behind the main relay on the power supply.The DC MOTOR CONTROL logical relation that the control logic of CJ220 is as shown in table 1.Alphabetical L represents low level in this table, and alphabetical H represents high level, and alphabetical X represents that signal is uncertain, and zed is represented high resistant.
Table 1
| Action | DI | EN | IN1 | IN2 | OU1 | OU2 | SF |
| Just change | L | H | H | L | H | L | H |
| Counter-rotating | L | H | L | H | L | H | H |
| The low level free state | L | H | L | L | L | L | H |
| The high level free state | L | H | H | H | H | H | H |
| Forbid | H | X | X | X | Z | Z | L |
| Enable | X | L | X | X | Z | Z | L |
| The IN1 open circuit | L | H | Z | X | H | X | H |
| The IN2 open circuit | L | H | X | Z | X | H | H |
| The DI open circuit | Z | X | X | X | Z | Z | L |
| The EN open circuit | X | Z | X | X | Z | Z | L |
| The electric current restriction enables | L | H | X | X | Z | Z | H |
| Low voltage | X | X | X | X | Z | Z | L |
| Overvoltage | X | X | X | X | Z | Z | L |
| Overcurrent | X | X | X | X | Z | Z | L |
Because the requirement of system also has a MEGA48 to make coprocessor except main control chip, as shown in Figure 8 in the utility model.Coprocessor mainly contains two main functions, and the one, do the detection of igniting feedback; The 2nd, make pressure cylinder decision.The 1st pin of coprocessor has been received on the crankshaft signal by one 0 Europe resistance, this signal is used for pressure cylinder decision usefulness in coprocessor, the resistance of putting 0 Europe here is can not weld this resistance to stop the work of the pressure cylinder decision in the coprocessor in camshaft is declared the system of cylinder.The clock of coprocessor is provided by the 81st pin of primary processor, and this clock frequency is 16MHz.The 18th pin of coprocessor provides the power supply of the AD conversion of coprocessor, and this power supply links to each other with the 5V power supply by an inductance L 1 and carries out filtering by C19, to guarantee the precision of AD conversion.The reference voltage of AD conversion is provided by TMAPVCC, and as described earlier in this article, this power supply has passed through reliable filtering.The 26th pin of coprocessor is the input of suction pressure signal, and this signal is used for pressure cylinder decision.The the 30th and the 31st pin of coprocessor is the input of igniting feedback, whether coprocessor is done to export 70th and 74th pin of two signals to primary processor after the logical process on the 23rd and the 24th pin to these two feedbacks, working properly for primary processor judging point fire coil.
Be the circuit connection diagram of main control chip of the present utility model shown in Fig. 7 A and Fig. 7 B, main control chip of the present utility model adopts the ST10F269 of ST company, and reset signal is produced by MAX809.The 1 pin ground connection of MAX809,3 pin connect power supply, and 2 pin are reset signal output, connect 140 pin of ST10F269.The AD sampling reference supply of ST10F269 is provided by TMAPVCC.The crystal oscillator source of ST10F269 is provided by the crystal Y1 of a 8MHz, and the crystal oscillator signal is from the 137th and the 138th pin input of ST10F269.Except the said analog input in front, the ST10F269 of control output also will know present system voltage, battery voltage just, this voltage by R17 and R16 to main relay after the power supply dividing potential drop obtain.
It is main control chip that the utility model adopts ST10F273M, except the basic controlling that can satisfy motor, also support the system of variable timing closure VVT, electronic throttle, and can support pressure declare the motor of cylinder, in addition hardware resource also have the port reserved can expansion other function.The utility model circuit is terse, level of integration is high, reliability is high, cost is lower, function more comprehensively.
Each chip that above embodiment mentions all can have been bought on market, and producer all discloses the detailed introduction to chip function and parameter, and therefore, concrete function and parameter to chip in this patent no longer describe in detail.
The above only is a preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model know-why; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (10)
1, a kind of engine electric-controlled unit is characterized in that, comprising:
Main control chip;
With the analog signal input circuit that described main control chip carries out data communication, described analog signal input circuit comprises: throttle position sensor input signal circuit, pedal position sensor input signal circuit, oil temperature sensor input signal circuit, oil pressure sensor input signal circuit;
The switching value signal input circuit, the input circlult of vehicle speed sensor signal, camshaft signal input circlult, the crankshaft signal change-over circuit that carry out data communication with described main control chip;
The quick-fried signal processing circuit of shaking of carrying out data communication with described main control chip;
The controller local area network line communication circuit of carrying out data communication with described main control chip;
The K line communication circuit of carrying out data communication with described main control chip;
The electric power management circuit that carries out data communication with described main control chip;
The driving output circuit that carries out data communication with described main control chip;
The ignition drive circuit that carries out data communication with described main control chip;
The electronic type closure executive circuit that carries out data communication with described main control chip.
2, engine electric-controlled unit as claimed in claim 1, it is characterized in that, also comprise association's process chip of carrying out data communication with described main control chip, described association process chip is used to realize pressure cylinder decision, and described crankshaft signal change-over circuit, analog signal input circuit are connected with described association process chip respectively.
3, engine electric-controlled unit as claimed in claim 1 is characterized in that, described electronic type closure executive circuit is connected with motor and is used to control the motor forward or reverse.
4, engine electric-controlled unit as claimed in claim 1, it is characterized in that, described analog signal input circuit also comprises: the fuel level sensor input signal circuit that is made of pull-up resistor and π shape eliminator, the intake air temperature sensor input signal circuit that constitutes by pull-up resistor and π shape eliminator, the evaporator temperature sensor input signal circuit that constitutes by pull-up resistor and π shape eliminator, the cooling-water temperature sensor input signal circuit that constitutes by pull-up resistor and π shape eliminator, the acceleration sensor input signal circuit that constitutes by pull-up resistor and π shape eliminator, the lambda sensor input signal circuit that constitutes by bleeder circuit and π shape eliminator, wherein, oil temperature sensor input signal circuit is made of pull-up resistor and π shape eliminator or pull down resistor and π shape eliminator, oil pressure sensor input signal circuit is made of pull-up resistor and π shape eliminator or pull down resistor and π shape eliminator, throttle position sensor input signal circuit is made of pull down resistor and π shape eliminator, pedal position input signal circuit is made of pull down resistor and π shape eliminator.
5, engine electric-controlled unit as claimed in claim 2, it is characterized in that, described analog signal input circuit also comprises air inlet pressure sensor input signal circuit, described air inlet pressure sensor input signal circuit is made of the π shape eliminator of two cascades, one of them inserts main control chip and is used for measuring air inflow, and another has received the standard that is used for pressure cylinder decision on AD sampling pin of coprocessor.
6, engine electric-controlled unit as claimed in claim 1 is characterized in that, described oil temperature sensor input signal circuit is a two-way, and described oil pressure sensor input signal circuit is a two-way.
7, engine electric-controlled unit as claimed in claim 1 is characterized in that, described controller local area network line communication circuit comprises that a slice or two are used for K line and described main control chip serial ports are carried out the data converted conversion chip.
8, engine electric-controlled unit as claimed in claim 7 is characterized in that, described data transfer chip is 82C250, and wherein the output of 82C250 is connected with common mode inductance, resistance unit of described common mode inductance output termination.
9, engine electric-controlled unit as claimed in claim 1 is characterized in that, described driving output circuit comprises driving chip CJ910 and CJ945.
10, engine electric-controlled unit as claimed in claim 1 is characterized in that, described main control chip is that model is the control chip of ST10F273M
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820078449XU CN201137527Y (en) | 2008-01-07 | 2008-01-07 | Engine electric control unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820078449XU CN201137527Y (en) | 2008-01-07 | 2008-01-07 | Engine electric control unit |
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| Publication Number | Publication Date |
|---|---|
| CN201137527Y true CN201137527Y (en) | 2008-10-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820078449XU Expired - Lifetime CN201137527Y (en) | 2008-01-07 | 2008-01-07 | Engine electric control unit |
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| CN (1) | CN201137527Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101634255B (en) * | 2009-08-09 | 2012-04-18 | 闵敏 | Electrical control unit of petrol engine |
| CN102944330A (en) * | 2012-10-31 | 2013-02-27 | 浙江吉利汽车研究院有限公司杭州分公司 | Temperature detection method for air inlet of engine air cylinder |
| CN103277206A (en) * | 2013-05-20 | 2013-09-04 | 第一拖拉机股份有限公司 | Highly-integrated diesel high-pressure common-rail electronic control unit |
| CN103883405A (en) * | 2014-03-31 | 2014-06-25 | 长城汽车股份有限公司 | Control system of direct injection engine in gasoline cylinder of automobile and automobile |
| CN111636990A (en) * | 2020-06-01 | 2020-09-08 | 长沙市健科电子有限公司 | Signal processing device, signal processing apparatus, vehicle, and signal processing method |
| CN112648084A (en) * | 2020-12-11 | 2021-04-13 | 江苏大学 | Dual-fuel engine controller based on function safety |
-
2008
- 2008-01-07 CN CNU200820078449XU patent/CN201137527Y/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101634255B (en) * | 2009-08-09 | 2012-04-18 | 闵敏 | Electrical control unit of petrol engine |
| CN102944330A (en) * | 2012-10-31 | 2013-02-27 | 浙江吉利汽车研究院有限公司杭州分公司 | Temperature detection method for air inlet of engine air cylinder |
| CN102944330B (en) * | 2012-10-31 | 2014-09-17 | 浙江吉利汽车研究院有限公司杭州分公司 | Temperature detection method for air inlet of engine air cylinder |
| CN103277206A (en) * | 2013-05-20 | 2013-09-04 | 第一拖拉机股份有限公司 | Highly-integrated diesel high-pressure common-rail electronic control unit |
| CN103883405A (en) * | 2014-03-31 | 2014-06-25 | 长城汽车股份有限公司 | Control system of direct injection engine in gasoline cylinder of automobile and automobile |
| CN111636990A (en) * | 2020-06-01 | 2020-09-08 | 长沙市健科电子有限公司 | Signal processing device, signal processing apparatus, vehicle, and signal processing method |
| CN111636990B (en) * | 2020-06-01 | 2022-03-01 | 深圳市健科电子有限公司 | Signal processing device, signal processing apparatus, vehicle, and signal processing method |
| CN112648084A (en) * | 2020-12-11 | 2021-04-13 | 江苏大学 | Dual-fuel engine controller based on function safety |
| CN112648084B (en) * | 2020-12-11 | 2023-02-17 | 江苏大学 | Dual-fuel engine controller based on function safety |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: CHINA VAGON (BEIJING) CARTRONICS HOLDING CO., LTD. Free format text: FORMER NAME: HUAXIA LONGHUI (BEIJING) AUTOMOBILE ELECTRONIC TECHNOLOGY CO., LTD. |
|
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 102206 No. 97, Changping Road, Shahe Town, Beijing, Changping District Patentee after: Huaxia Long Hui (Beijing) automotive electronic Polytron Technologies Inc Address before: 102206 8 building, No. 202, Changping Road, Shahe Town, Beijing, Changping District Patentee before: China Vagon (Beijing) Automobile Electronic Technology Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20081022 |