CN201241760Y - Light vehicle electric spray petrol engine management system satisfying national III discharge standard - Google Patents
Light vehicle electric spray petrol engine management system satisfying national III discharge standard Download PDFInfo
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- CN201241760Y CN201241760Y CNU2008201078639U CN200820107863U CN201241760Y CN 201241760 Y CN201241760 Y CN 201241760Y CN U2008201078639 U CNU2008201078639 U CN U2008201078639U CN 200820107863 U CN200820107863 U CN 200820107863U CN 201241760 Y CN201241760 Y CN 201241760Y
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- ecu
- management system
- control unit
- engine management
- electrical control
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- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
Abstract
The utility model discloses a light car electronic injection gasoline engine management system, meeting national III discharge standard, which mainly comprises an electric control unit, a sensor part and an actuator, wherein the microprocessor of the electric control unit (ECU) adopts a MC9S12DP512 chip of the Freescale company, the hardware circuit adopts modularized design, having good electromagnetic compatibility feature and reliability. The management system can accurately control gasoline injection, ignition and idle speed of an engine, therefore, the engine can obtain good dynamic performance and economic benefits, and the discharge meets national III discharge standard.
Description
Technical field
The utility model belongs to electronic injection gasoline engine management system technical field, is specifically related to a kind of Light-duty Vehicle electronic injection gasoline engine management system that satisfies state III emission standard.
Background technique
The early stage petrol engine of China is to introduce and the mapping imitation products mostly.Afterwards along with the foundation and the technology transfer of Chinese-foreign joint venture, China garage had produced different types of machines already, in the technology application facet, the type that great majority are introduced type and joint venture's production all adopts some advanced foreign technologies, particularly aspect engine electric spray management system (EMS), the mainstream vendor of the employed engine management system of automobile industry is offshore company substantially at present, and major part is introduced domestic with vehicle main frame, be mainly Bosch, Delphi, horse Rayleigh, Denso, Siemens and Motorola etc.Domestic main joint venture with these companies is as the associating electronics, for main engine factory provide engine management system.Domestic automobile engine management system technical merit also still have a problem that falls behind relatively, restricted the domestic automobile industrial expansion.
At present, Beijing's executed state III emission standard is about to the III of state of enforcement emission standard in China, and therefore, the high-end Gasoline Engine Management System product of group of domestic enterprise active development independent brand is the task of top priority of development of national automotive industry.
The model utility content
Problem to be solved in the utility model provides a kind of Light-duty Vehicle electronic injection gasoline engine management system that satisfies state III emission standard, comprise ECU (Electrical Control Unit), Sensor section, and the oil sprayer assembly that is connected with described ECU (Electrical Control Unit), ignition system and other executive components, it is characterized in that: described ECU (Electrical Control Unit) comprises microprocessor and the signal conditioning circuit that is electrically connected with described microprocessor, communication interface circuit, ignition drive circuit, injector drive circuit, driving amplification circuit and switching value output control circuit, and described microprocessor adopts 16 bit processor chips.
Described 16 bit processor chips adopt the MC9S12DP512 chip of Freescale company.
The utlity model has following advantage:
The information of sensors such as the crankshaft position sensor of the ECU (Electrical Control Unit) in the utility model (ECU) collection motor, absolute pressure transducer, intake air temperature sensor, cooling-water temperature transmitter, lambda sensor, judge engine operating status according to these information, require the accurately fuel injection pulsewidth and the ignition advance angle of control motor according to engine operation condition, with the speed that satisfies motor and the needs of load.Multinomial functions such as idle speed control, emission control, air-conditioning control and self diagnosis that this management system is simultaneously integrated, can make motor power character, Economy, idle stability can be improved significantly, and emission performance satisfies the requirement of state III emission standard.
When the main sensors of this Light-duty Vehicle electronic injection gasoline engine management system, enable back-up system when final controlling element breaks down automatically, guarantee that vehicle driving keeps in repair to the service station.Also have reserve functions such as limp-home, improved the functional reliability of engine management system.
Description of drawings
Fig. 1 satisfies the Light-duty Vehicle electronic injection gasoline engine management system schematic representation of state III emission standard for the utility model;
Embodiment
The utility model will be further described below in conjunction with accompanying drawing.
Fig. 1 satisfies the Light-duty Vehicle electronic injection gasoline engine management system schematic representation of state III emission standard for the utility model, comprise ECU (Electrical Control Unit) (1), Sensor section (2) executive component (3), and diagnosis that is connected with described ECU (Electrical Control Unit) (1) and communication element (4) composition.It is characterized in that: described ECU (Electrical Control Unit) (1) comprises microprocessor (101), signal conditioning circuit (102), communication interface circuit (103), ignition drive circuit (104), injector drive circuit (105), drives amplification circuit (106), switching value output control circuit (107), and described microprocessor (101) adopts 16 bit processor chips.Described 16 bit processor chips adopt the MC9S12DP512 chip of Freescale company, and the ECU circuit board adopts modular design, and digital circuit and Design of Simulating Circuits and layout have taken into full account the electromagnetic compatibility characteristic.
The operation of the whole motor of ECU (Electrical Control Unit) (ECU) control.It receives the information of all the sensors of measuring engine sensor part 2, handles the back output order and gives each final controlling element, finishes functions such as air fuel ratio control and ignition timing control, and the running state of the various operating modes of motor is accurately controlled.
The input element of (ECU) of ECU (Electrical Control Unit):
Air inlet pressure sensor (MAP) is a three-way high sensor.Article one, line is a sensor power supply line, and another line is the sensor ground wire, and the 3rd line is the signaling line of sensor.Air inlet pressure sensor (MAP) is that ECU (Electrical Control Unit) (ECU) is used for determining the main signal to the fuel delivery of motor.
Crankshaft position sensor adopts magnetoelectric sensor.Be fixed on the sensor stand, support is contained on the engine timing gear chamber cap, detects crank position and angle.
Intake air temperature sensor is a NTC thermistor type sensors (variation of internal resistance is opposite with variation of temperature), is installed in the intake manifold, measures the air temperature that enters intake manifold, and ECU is according to this signal correction fuel injection quantity.
Cooling-water temperature transmitter also is a NTC thermistor type sensors, is installed on the cylinder cap near in the water jacket of thermostat housing, provides cooling water temperature information to control unit of engine.
Throttle position sensor is a three-way variable resistor, is contained on the throttle valve body, provides the throttle opening signal to control unit of engine.
Lambda sensor is a kind of voltage generation circuit, is used for detecting the content of oxygen in the exhaust, makes ECU (Electrical Control Unit) can correctly control the proportions of ingredients of air and fuel oil.
When air-conditioning request switch places " connecting (ON) " position, send air-conditioning solicited message (if air-conditioning lower pressure switch closure) to ECU (Electrical Control Unit) (ECU).ECU (Electrical Control Unit) (ECU) utilizes this information to determine needed idle speed step motor position, and engages or the separation air conditioning clutch.
Serial communication interface (SCI) is the serial data circuit, and ECU (Electrical Control Unit) (ECU) is by the data of serial communication interface (SCI) reception from computer diagnostic instrument.
The final controlling element of ECU (Electrical Control Unit) (ECU) control has: main relay, oil sprayer, spark coil, stepper motor etc.
Main relay is an electric elements that comprises coil and contact.Work as coil electricity, coil has become electromagnet, and operating position is moved in the contact.For fuel pump circuit, oil sprayer and spark coil provide power supply.
The oil sprayer two ends are contained in respectively on intake manifold and the oily rail.ECU (Electrical Control Unit) (ECU) is according to the pulse width of the concrete operating mode control oil sprayer of motor, and with the specific oil sprayer that connects in turn.
Igniting drives by ECU output two-way fire signal, finishes igniting output by triode drive ignition coil then.
Step motor control idling bypass valve aperture, thereby the air inflow of control during idling reach the order of control idling.
The fault that occurs in the working condition of engine control system and the work can be monitored, be diagnosed to the fault self-diagnosis system of ECU (Electrical Control Unit) (ECU).Break down when ECU (Electrical Control Unit) (ECU) monitors key sensors such as air inlet pressure sensor, intake air temperature sensor, cooling-water temperature transmitter, lambda sensor, throttle position sensor, will enable the reserve function, vehicle changes the limping state automatically over to.Can guarantee that like this vehicle driving keeps in repair to the service station.
The realization of ECU (Electrical Control Unit) (ECU) control function:
ECU (Electrical Control Unit) (ECU) is by the operating conditions of pick-up transducers signal perception motor.ECU (Electrical Control Unit) (ECU) is by engine load and rotating speed, looks into fuel injection pulsewidth and ignition advance angle that arteries and veins spectrogram among the ECU obtains motor.Intake air temperature sensor and engine coolant temperature sensor provide temperature information to be used to revise air fuel ratio.
Be operated under the most operating modes of motor that to adopt lambda sensor to carry out feedback control be the closed loop control state, desirable air-fuel ratio is 14.7:1 (in mass).ECU (Electrical Control Unit) under some condition (ECU) adopts open loop control, during the warming-up of during as engine start and firm starting back, because engine coolant temperature is low, at this moment needs denseer mixed gas.And for example motor also needs than rich mixture when big load, high rotation speed operation.
Power character, Economy, the idle stability of the Light-duty Vehicle petrol engine of employing the utility model patent can satisfy user's needs, and emission performance satisfies the requirement of state III emission standard.
Claims (2)
1, a kind of Light-duty Vehicle electronic injection gasoline engine management system that satisfies state III emission standard comprises ECU (Electrical Control Unit) (1), Sensor section (2) executive component (3), and diagnosis that is connected with described ECU (Electrical Control Unit) (1) and communication element (4) composition; It is characterized in that: described ECU (Electrical Control Unit) (1) comprises microprocessor (101), the signal conditioning circuit (102) that is electrically connected with described microprocessor (101), communication interface circuit (103), ignition drive circuit (104), injector drive circuit (105), drives amplification circuit (106) and switching value output control circuit (107), and described microprocessor (101) adopts 16 bit processor chips.
2, according to the Light-duty Vehicle electronic injection gasoline engine management system that satisfies state III emission standard of claim 1, it is characterized in that: described 16 bit processor chips adopt the MC9S12DP512 chip of Freescale company.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201078639U CN201241760Y (en) | 2008-03-25 | 2008-03-25 | Light vehicle electric spray petrol engine management system satisfying national III discharge standard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201078639U CN201241760Y (en) | 2008-03-25 | 2008-03-25 | Light vehicle electric spray petrol engine management system satisfying national III discharge standard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201241760Y true CN201241760Y (en) | 2009-05-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201078639U Expired - Fee Related CN201241760Y (en) | 2008-03-25 | 2008-03-25 | Light vehicle electric spray petrol engine management system satisfying national III discharge standard |
Country Status (1)
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102374049A (en) * | 2010-07-30 | 2012-03-14 | 北汽福田汽车股份有限公司 | Combustion air-fuel ratio control method of hydrogen internal combustion engine |
| CN101634255B (en) * | 2009-08-09 | 2012-04-18 | 闵敏 | Electrical control unit of petrol engine |
| CN101798966B (en) * | 2010-01-15 | 2012-11-21 | 河南柴油机重工有限责任公司 | Intelligent centralized monitoring system for gas machine |
| 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 |
| CN105156211A (en) * | 2015-09-28 | 2015-12-16 | 江苏大学 | Electronic control system used for small-sized single-cylinder four-stroke gasoline engine |
-
2008
- 2008-03-25 CN CNU2008201078639U patent/CN201241760Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101634255B (en) * | 2009-08-09 | 2012-04-18 | 闵敏 | Electrical control unit of petrol engine |
| CN101798966B (en) * | 2010-01-15 | 2012-11-21 | 河南柴油机重工有限责任公司 | Intelligent centralized monitoring system for gas machine |
| CN102374049A (en) * | 2010-07-30 | 2012-03-14 | 北汽福田汽车股份有限公司 | Combustion air-fuel ratio control method of hydrogen internal combustion engine |
| 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 |
| CN105156211A (en) * | 2015-09-28 | 2015-12-16 | 江苏大学 | Electronic control system used for small-sized single-cylinder four-stroke gasoline engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090520 Termination date: 20100325 |