CN201159110Y - Universal four-cylinder diesel engine electric control unit - Google Patents
Universal four-cylinder diesel engine electric control unit Download PDFInfo
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- CN201159110Y CN201159110Y CNU2008200788626U CN200820078862U CN201159110Y CN 201159110 Y CN201159110 Y CN 201159110Y CN U2008200788626 U CNU2008200788626 U CN U2008200788626U CN 200820078862 U CN200820078862 U CN 200820078862U CN 201159110 Y CN201159110 Y CN 201159110Y
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Abstract
The utility model relates to a diesel engine electronic control unit capable of electronically automatic fuel injection under control of a computer system, which comprises a main control chip, a FLASH chip, an external RAM chip and an EEPROM chip, and further comprises a signal processing module, a switch signal processing module, a driver module 1, a driver module 2 and a controller area network (CAN) bus communication circuit which respectively perform data communication with the main control chip, wherein the FLASH chip is used to control the running program of the main control chip, the external RAM chip and the EEPROM chip are used to store intermediate data in processing of the main control chip, the driver module 1 is used to drive four-route fuel injector, and the driver module 2 is used for a high pressure fuel pump. The diesel engine electronic control unit can realize ideal mixture air/fuel ratio, enable the diesel motor to achieve low exhaustion and low fuel consumption with outputting high power, thereby increasing working performance of the motor.
Description
Technical field
The utility model relates to a kind of general four-cylinder diesel engine ECU (Electrical Control Unit), the automatic fuel-injected diesel engine electric control unit of particularly a kind of electronics of realizing under computer system control.
Background technique
The remarkable advantage of diesel engine is exactly that oil consumption is low.And aspect discharging, though the discharge amount of CO, HC etc. is quite low in the diesel exhaust gas, the discharge amount of its particulate is very high, is tens times of petrol engine even more.Thereby want to improve in-cylinder combustion and obtain preferably that diesel engine performance just must as injection pressure, fuel injection quantity, injection timing, fuel injection rate etc., carry out optimal control according to different operating modes to each nozzle parameter.But traditional mechanical formula fuel injection system is difficult to accomplish this point, this be because: 1, control degrees of freedom is little.Its fuel injection quantity, the isoparametric controlling Design of injection timing are to take into account the compromise proposal of various working in the mechanical type fuel injection system, can not realize the optimization of fuel injection parameter in the instant operating mode of reality.For example: because the charge oil pressure of oil pump raises with the rising of rotating speed, so during low speed, cause diesel oil to drip atomization quality because of jet pressure is low poor, it is insufficient to burn.Determining of injection timing is benchmark mostly with the declared working condition, in case determine, also can not arbitrarily change in the diesel engine running.2, control accuracy is low.This mainly is because mechanical system inertia is bigger, each component gapped friction always in the system etc., thus limited control accuracy.
The model utility content
(1) technical problem that will solve
The purpose of this utility model is at above-mentioned the deficiencies in the prior art, and a kind of diesel engine fuel jetting ECU (Electrical Control Unit) is provided, and it can be revised fuel injection system constantly automatically according to signals such as the air quantity that changes, engine operating parameter, temperature.
(2) technological scheme
For achieving the above object, the utility model adopts following technological scheme:
General four-cylinder diesel engine ECU (Electrical Control Unit) described in the utility model is characterized in that, comprising:
Main control chip;
Be used to store the FLASH chip of described main control chip working procedure;
External RAM chip, the eeprom chip of the intermediate data when being used to store described main control chip and handling.
The signal processing module that carries out data communication with described main control chip;
The switching signal puocessing module of carrying out data communication with described main control chip;
The driver module 1 that is used to drive No. four oil sprayers that carries out data communication with described main control chip;
The driver module 2 that is used to drive high pressure oil pump that carries out data communication with described main control chip;
The controller local area network CAN bus communication circuit that carries out data communication with described main control chip.
Wherein also comprise a serial communication module that is used for carrying out data communication with external equipment.
Wherein comprise pulse signal puocessing module and analog signal processing module with described signal processing module.
Described pulse signal puocessing module comprises engine rotational speed signal circuit, vehicle speed signal circuit and camshaft signal circuit.
Described analog signal processing module comprises accelerator pedal signal circuit, common rail pressure signal circuit, plenum pressure signal circuit, fuel oil temperature signal circuit, coolant water temperature signal circuit.
Wherein also comprise an A/D modular converter that analog signal conversion is become digital signal.
(3) beneficial effect
The advantage and the good effect of general four-cylinder diesel engine ECU (Electrical Control Unit) described in the utility model are: the gasoline air mixture ratio that the utility model can be realized ideal, when diesel engine reaches low emission, low oil consumption requirement, export high power, improve the service behaviour of motor.
Description of drawings
Fig. 1 is a functional block diagram of the present utility model;
Fig. 2 a is main control chip (32 single-chip microcomputer MPC565 of Freescale company);
Fig. 2 b is stored program FLASH chip (M58BW016 of Freescale company);
Fig. 2 c is the external RAM chip of storage data;
Fig. 2 d is an eeprom chip;
Fig. 3 a is the crankshaft-position signal processing circuit;
Fig. 3 b is the camshaft-position signal processing circuit;
Fig. 3 c is pressure signal processing circuit figure;
Fig. 4 is the fuel injection module circuit diagram;
Fig. 5 is high pressure oil pump control circuit figure;
Fig. 6 a is a K line communication module circuit diagram;
Fig. 6 b is a CAN line communication module circuit diagram.
Embodiment
Below in conjunction with accompanying drawing, further describe the embodiment of general four-cylinder diesel engine ECU (Electrical Control Unit) described in the utility model, but be not used for limiting protection domain of the present utility model.
As shown in Figure 1, the main functional modules in the utility model comprises: 1) signal acquisition process module, exactly each sensor acquisition of periphery to signal give single-chip microcomputer and handle.2) 32 one-chip computer module comprises master controller, outside FLASH, RAM, EEPROM, and the signal that processing collects is also delivered in each control module.3) communication module mainly is CANLINE, K LINE serial communication.CAN LINE is used for and the calibration tool communication, and ECU is demarcated, and makes our control algorithm more accurate.Serial K LINE is used for downloading and functional diagnosis.4) oil spout control module the fuel injection signal of master controller output, changes out the rear driving oil nozzle by power device.5) high pressure oil pump driver module, the signal of master controller output, the signal of changing out by power device drives high pressure oil pump, the control fuel pressure.6) multi-channel switch is to the control of switching values such as low idling, Ruiss Controll, air-conditioning.
Shown in Fig. 2 a, Fig. 2 b, Fig. 2 c, Fig. 2 d, master controller of the present utility model is 32 single-chip microcomputer MPC565 chips of Freescale company (predecessor is the Motorola semiconductor), the M58BW016 that it is Freescale company that the outside adds a stored program FLASH chip, an external RAM, an EEPROM has constituted minimum system.
Signal processing module is made up of crankshaft position sensor processing circuit, camshaft-signal sensor processing circuit, air inlet pressure sensor processing circuit, cooling-water temperature sensor processing circuit, fuel temperature sensor processing circuit, accelerator pedal position sensor processing circuit, common rail oil pressure pressure transducer processing circuit, throttle position sensor processing circuit.Their annexation is: 1st, crankshaft-position signal processing circuit.See Fig. 3 a, this circuit is made up of crankshaft position sensor input signal, R40, R41, R42, R43, R94, A21, A22, A104, A105, A106, A160, A162, A175, C73, the bent axle analog signal conversion becomes pulse signal, is used for determining oil spout timing constantly for master controller.2nd, camshaft-position signal processing circuit.See Fig. 3 b, this circuit is made up of CMPS Camshaft Position Sensor input signal, R147, RP8C, C155, C234, and camshaft analog signal converts pulse signal to and supplies with master controller.3rd, cooling water temperature signal processing circuit, fuel oil temperature signal processing circuit, throttle position signal processing circuit are the same control principles with the camshaft-position signal processing circuit.4th, suction pressure signal processing circuit.This circuit is made up of pressure transducer input signal, RP2B, C149, C42.Pressure transducer is received on the master controller through RP2B.See Fig. 3 c, intake temperature pressure sensor signal processing circuit, accelerator pedal position sensor signal processing circuit heel pressure sensor signal processing circuit are the same control principles.
Fig. 4 is the circuit diagram of fuel Injection Control module, because be four cylinder engine, so four road fuel injection control circuits are arranged, this oil spout circuit is by chip U3, resistance R 66, R67, R68, R69, R125, R126, R127, R128, R165, capacitor C 168, C169, C170, C172, triode Q13, Q14, Q15, Q16, diode D12, D14, D16, D17 form.From 23 pin of master controller output high level through resistance R 66 to the oil spout chip, give oil sprayer from oil spout chip output 12V voltage by wire harness.As Fig. 4.Three tunnel oil spout control principles are the same with last road in addition, thereby realized the fuel injection function.
Fig. 5 is the high pressure oil pump control circuit, and this circuit is made up of intergrated circuit AD8200, and 6 pin of L9935 meet power supply VCC, 2,7 pin ground connection, 8 pin insert high pressure oil pump sensor die analog signal, after the amplification of process chip AD8200, the filtering, insert the master controller chip by the 5th pin and carry out calculation process.
Fig. 6 is the communication module circuit, and Fig. 6 a is a K line change-over circuit, K LINE is converted to the transmitting-receiving two-way of serial ports.This circuit is made up of CY317 chip, resistance R 19, R20, R21, R22, A38, A39 and capacitor C 106, C89, K line 1 connects by R21 and draws, and connects C106 filtering, meets CY317 by R20, K line 1 is converted to the transmitting-receiving two-way (RXD1, RXD2) of serial ports, connect master controller.K line 2 is the same with K line 1 tunnel.Fig. 6 b is a CAN LINE communicating circuit, 2 pin ground connection of A82C250 chip, and 3 pin meet power supply 5V, and 1,4 pin connect master controller, are respectively transmission and the acceptance of CAN, and 6,7 pin are by handling wiring bundle CANH, CANL respectively.
The utility model has been used existing controller local area network CAN line communication technology and K line communication technology.
Controller local area network CAN (Controller 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.
ECU (Electrical Control Unit) 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 following description of process control of the present utility model: computer plate (ECU) is the core of automatical control system, and it is a digital computer of being made up of microprocessor, program data memory, power supply circuit and all kinds of input, output interface circuit.System can realize each operating mode control of motor.1, state of starting operating control: master controller is by rotating speed (N) signal identification state of starting operating and operating conditions, and tach signal obtains by crankshaft position sensor.When rotating speed (N) when being lower than certain value, enter the startup operating mode; When rotating speed (N) when being higher than certain value, enter operating conditions.2, idling operation control: discern idling operation by an idling operation variable in the software, motor enters idling operation, at this moment idle speed step motor is according to the situation of engine load, regulate throttle position through stepper motor and change the sensor size, convert the resistance value on the throttle position sensor to electrical signal, flow to master controller, master controller is according to the fuel injection quantity of input signal control oil sprayer, and then idling is stable within the specific limits to control motor.3, sub load and full load mode control, master controller is discerned load and full load by the size of throttle position sensor signal.When throttle position sensor signal during less than the full load closure limit value of this corresponding rotating speed, the entering part load condition; Otherwise then enter full load mode.4, acceleration and deceleration transient working condition control: master controller is the size and the positive and negative plus-minus transient working condition of discerning of the change rate signal (TPS) by throttle position sensor.When throttle position sensor signal variance ratio (TPS) increases and surpass certain value (TPS1), enter accelerating mode, when change rate signal (TPS) reduces and be lower than certain value (TPS2), then enter decelerating mode.By increasing or reduce the oil spout reduction value, guarantee to quicken rapidly steadily, the deceleration fuel-economizing also reduces discharging.
General four-cylinder diesel engine ECU (Electrical Control Unit) described in the utility model comprises computer plate ECU, computer plate ECU comprises central processing unit CPU, the FLASH that is used for stored programme or data, RAM, EEPROM, system power supply module, communication module, the signal acquisition module of control program, the oil spout module, high pressure oil pump module, closure control module and multichannel control output module.During engine operation, crankshaft position sensor detects the rotation signal of bent axle, and send to signal acquisition module, crankshaft-position signal is taked the form of a series of pulses, wherein each pulse is all produced through on the sensor when rotated by the predetermined point on the bent axle, the rotating speed of the pulse frequency indication engine crankshaft of crankshaft-position signal, ECU is that benchmark is determined injection timing with this signal, and cooperates camshaft signal to judge the working state of each cylinder of motor.Consider diesel engine speed and effects of load, fuel injection quantity is revised automatically, realize the accurate control of oil spout according to signals such as diesel engine water temperature, oil temperature, atmospheric pressure temperature, accelerator pedal positions.
More than be preferred forms of the present utility model, according to the disclosed content of the utility model, some identical, replacement schemes that those of ordinary skill in the art can expect apparently all should fall into the scope that the utility model is protected.
Claims (6)
1. a general four-cylinder diesel engine ECU (Electrical Control Unit) is characterized in that, comprising:
Main control chip;
Be used to store the FLASH chip of described main control chip working procedure;
External RAM chip, the eeprom chip of the intermediate data when being used to store described main control chip and handling.
The signal processing module that carries out data communication with described main control chip;
The switching signal puocessing module of carrying out data communication with described main control chip;
The driver module 1 that is used to drive No. four oil sprayers that carries out data communication with described main control chip;
The driver module 2 that is used to drive high pressure oil pump that carries out data communication with described main control chip;
The controller local area network CAN bus communication circuit that carries out data communication with described main control chip.
2. general four-cylinder diesel engine ECU (Electrical Control Unit) according to claim 1 is characterized in that also comprising a serial communication module that is used for carrying out with external equipment data communication.
3. general four-cylinder diesel engine ECU (Electrical Control Unit) according to claim 1 and 2 is characterized in that comprising pulse signal puocessing module and analog signal processing module with described signal processing module.
4. general four-cylinder diesel engine ECU (Electrical Control Unit) according to claim 3 is characterized in that described pulse signal puocessing module comprises engine rotational speed signal circuit, vehicle speed signal circuit and camshaft signal circuit.
5. general four-cylinder diesel engine ECU (Electrical Control Unit) according to claim 3 is characterized in that described analog signal processing module comprises accelerator pedal signal circuit, common rail pressure signal circuit, plenum pressure signal circuit, fuel oil temperature signal circuit, coolant water temperature signal circuit.
6. general four-cylinder diesel engine ECU (Electrical Control Unit) according to claim 5 is characterized in that also comprising an A/D modular converter that analog signal conversion is become digital signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200788626U CN201159110Y (en) | 2008-01-31 | 2008-01-31 | Universal four-cylinder diesel engine electric control unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200788626U CN201159110Y (en) | 2008-01-31 | 2008-01-31 | Universal four-cylinder diesel engine electric control unit |
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| CN201159110Y true CN201159110Y (en) | 2008-12-03 |
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| CNU2008200788626U Expired - Lifetime CN201159110Y (en) | 2008-01-31 | 2008-01-31 | Universal four-cylinder diesel engine electric control unit |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103287349A (en) * | 2012-02-22 | 2013-09-11 | 北京易斯路电子有限公司 | Oil temperature and oil pressure control device and method thereof for vehicles |
| CN103670756A (en) * | 2013-12-31 | 2014-03-26 | 中国汽车工程研究院股份有限公司 | Electrically-controlled gas engine nozzle controller based on CPLD (complex programmable logic device) |
| CN104454205B (en) * | 2014-11-04 | 2017-06-16 | 南岳电控（衡阳）工业技术股份有限公司 | Diesel electric-controlled unit micro controller module |
-
2008
- 2008-01-31 CN CNU2008200788626U patent/CN201159110Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103287349A (en) * | 2012-02-22 | 2013-09-11 | 北京易斯路电子有限公司 | Oil temperature and oil pressure control device and method thereof for vehicles |
| CN103287349B (en) * | 2012-02-22 | 2015-09-30 | 北京赛亚同创科技有限公司 | A kind of oil temperature of vehicle, hydraulic pressure control device and method thereof |
| CN103670756A (en) * | 2013-12-31 | 2014-03-26 | 中国汽车工程研究院股份有限公司 | Electrically-controlled gas engine nozzle controller based on CPLD (complex programmable logic device) |
| CN103670756B (en) * | 2013-12-31 | 2016-02-24 | 中国汽车工程研究院股份有限公司 | A kind of combustion gas electric-control motor nozzle controller based on CPLD |
| CN104454205B (en) * | 2014-11-04 | 2017-06-16 | 南岳电控（衡阳）工业技术股份有限公司 | Diesel electric-controlled unit micro controller module |
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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 |
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 |
Granted publication date: 20081203 |
|
| CX01 | Expiry of patent term |