CN104295380A - Control system for engine consuming CNG/gasoline - Google Patents
Control system for engine consuming CNG/gasoline Download PDFInfo
- Publication number
- CN104295380A CN104295380A CN201410403393.0A CN201410403393A CN104295380A CN 104295380 A CN104295380 A CN 104295380A CN 201410403393 A CN201410403393 A CN 201410403393A CN 104295380 A CN104295380 A CN 104295380A
- Authority
- CN
- China
- Prior art keywords
- ecu
- circuit
- drive circuit
- cng
- control system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
Landscapes
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
The invention discloses a control system for an engine consuming CNG/gasoline. The control system for the engine consuming CNG/gasoline comprises a crankshaft position speed sensor, a camshaft position sensor, an exhaust oxygen sensor and an electric control unit (ECU), wherein the crankshaft position speed sensor, the camshaft position sensor and the exhaust oxygen sensor are connected with the input end of the ECU, and the output end of the ECU is connected with an igniter of the engine, an oil injector and an idling stepping motor. The control system for the engine consuming CNG/gasoline is simple in structure and easy to design and obtain, the time-sequence requirement of working of the engine can be well met based on the control logic of a crankshaft signal and a camshaft signal, and grouped and synchronous control over the modules such as an ignition module and an oil injection module is achieved.
Description
Technical field
The present invention relates to the control system of a kind of CNG (compressed natural gas)/gasoline dual purpose fuel engine.
Background technique
Along with world's Abgasgesetz day is tight increasingly, people require to improve constantly, so engine electronic control system technology obtains more and more extensive development to automotive performance, energy-conservation etc.The hardware technology of the ECU (Electrical Control Unit) ECU of petrol engine, as microcontroller, microprocessor, sensor, final controlling element and specific integrated circuit are very ripe; But petrol engine is faced with the energy crisis and environmental pollution problem of increasingly sharpening, so countries in the world are all at development new-energy automobile.
Rock gas is the clean fuel of automobile, and gas-fueled vehicles exhaust emission is significantly less than gasoline automobile.At present, the correlation technique being applicable to the ECU (Electrical Control Unit) ECU of CNG/ gasoline dual purpose fuel engine is also less, especially can not meet the timing requirements of engine operation for the control logic of existing crankshaft signal and camshaft signal well, the module packet synchronization such as igniting, oil spout cannot be realized and control.
Summary of the invention
The present invention cannot realize the technical problem of the controls of module packet synchronization such as igniting, oil spout in order to solve prior art, provide a kind of control system for CNG/ gasoline dual purpose fuel engine.
The present invention solves above-mentioned technical problem by the following technical solutions: for the control system of CNG/ gasoline dual purpose fuel engine, comprises crank position speed probe, CMPS Camshaft Position Sensor, exhaust gas oxygen sensor and ECU (Electrical Control Unit) ECU; Crank position speed probe, CMPS Camshaft Position Sensor and exhaust gas oxygen sensor are connected with the input end of ECU (Electrical Control Unit) ECU respectively, and the output terminal of ECU (Electrical Control Unit) ECU is connected with the igniter of motor, oil sprayer, idle speed step motor respectively.
Described ECU (Electrical Control Unit) ECU comprises crank position signals of rotational speed sensor processing circuit, CMPS Camshaft Position Sensor signal processing circuit, serial port drive circuit, analog signal conditioner circuit, A/D change-over circuit and injector drive circuit; Described analog signal conditioner circuit, A/D change-over circuit, serial port drive circuit connect successively, and analog signal conditioner circuit is connected with exhaust gas oxygen sensor; Described serial port drive circuit is connected with crank position signals of rotational speed sensor processing circuit, CMPS Camshaft Position Sensor signal processing circuit, ignition drive circuit and injector drive circuit respectively.
Described crank position signals of rotational speed sensor processing circuit comprises pulse shaping nework and input capture interrupt circuit; Described crank position speed probe, pulse shaping nework, input capture interrupt circuit and serial port drive circuit connect successively.
Described CMPS Camshaft Position Sensor signal processing circuit comprises pulse shaping nework and input capture interrupt circuit; Described CMPS Camshaft Position Sensor, pulse shaping nework, input capture interrupt circuit and serial port drive circuit connect successively.
Described ECU (Electrical Control Unit) ECU also comprises switching signal Circuit tuning, ignition drive circuit; Described switching signal Circuit tuning, serial port drive circuit, ignition drive circuit connect successively, and switching signal Circuit tuning is connected with the ignition switch of motor, and ignition drive circuit is connected with the igniter of motor.
The present invention carries out multianalysis and design to ECU (Electrical Control Unit) ECU hardware circuit design, comprises the type selecting of single-chip microcomputer, the design of input stage sensor signal processing circuit, the design, microcontroller system circuit design etc. of output stage final controlling element power driving circuit.By gathering, analyzing stand test related data, in conjunction with knowledge such as petrol engine working principles, formulate software controlling strategies.By engine speed and manifold absolute pressure (MAP), basic fuel injection pulsewidth MAP is tabled look-up interpolation, and carry out Correction and Control according to other duty parameters and air fuel ratio closed-loop feedback controls, achieve operating conditions fuel-injected Comprehensive Control.
Compared with prior art, the present invention has following beneficial effect:
ECU (Electrical Control Unit) ECU structure is simple, be easy to design realizes, and the control logic based on crankshaft signal and camshaft signal can meet the timing requirements of engine operation well, realizes the control of the modules such as packet synchronization igniting, oil spout.Injection time controls comparatively accurate, and precision reaches 0.01ms, and error is less than 5%; Ignition advance angle minimum resolution is 0.01 °, and error is less than 5%.Optimize motor fuel to the full extent to use and Power output, improve engine management level in current variable fuel vehicle, promote the power performance of motor, also can alleviate exhaust emissions to greatest extent, make full use of the natural gas resource of China.
Accompanying drawing explanation
Fig. 1 is Control system architecture block diagram of the present invention;
Fig. 2 is crank position signals of rotational speed sensor processing circuit;
Fig. 3 is engine cam shaft position sensor processing circuit;
Fig. 4 is main program flow chart;
Fig. 5 is basic fuel injection subroutine flow chart.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, but embodiment of the present invention is not limited thereto.
Embodiment
The present embodiment is with operating mode speed of crankshaft=1000r/min, and throttle position 50%, suction pressure 80kpa is that example is described.
As shown in Figure 1, control system of the present invention comprises crank position speed probe (abbreviation speed probe), crank position signals of rotational speed sensor processing circuit, CMPS Camshaft Position Sensor, CMPS Camshaft Position Sensor signal processing circuit, exhaust gas oxygen sensor, serial port drive circuit, analog signal conditioner circuit, A/D change-over circuit, switching signal Circuit tuning and injector drive circuit.Exhaust gas oxygen sensor, analog signal conditioner circuit, A/D change-over circuit, serial port drive circuit, ignition drive circuit and injector drive circuit connect successively.Speed probe, crank position signals of rotational speed sensor processing circuit and serial port drive circuit connect successively.CMPS Camshaft Position Sensor, CMPS Camshaft Position Sensor signal processing circuit and serial port drive circuit connect successively.Ignition switch, switching signal Circuit tuning and serial port drive circuit connect successively.Serial port drive circuit is connected with ignition drive circuit, injector drive circuit respectively.With crank position signals of rotational speed sensor processing circuit, CMPS Camshaft Position Sensor signal processing circuit, analog signal conditioner circuit, A/D change-over circuit, injector drive circuit and serial port drive circuit for main modular, constitute the ECU (Electrical Control Unit) ECU in the present invention; The output terminal of ECU is connected with the igniter, oil sprayer, idle speed step motor etc. of motor respectively.ECU (Electrical Control Unit) ECU adopts single-chip microcomputer to realize, the preferred singlechip chip MC9S12DP256 of the present embodiment.
ECU (Electrical Control Unit) ECU is according to the rotating speed of the signal determination oil injection time of crank position speed probe, time of ignition and motor, if distortion will cause engine operation chaotic, so the signal transacting of crank position speed probe is extremely important, and required precision is high.Its signal processing circuit as shown in Figure 2, comprises the pulse shaping nework and input capture interrupt circuit that are connected; Concrete employing NCV7001 signal processing chip, the process such as suitable peripheral components of arranging in pairs or groups carries out filtering, amplitude limit to signal, compares, shaping, is translated into the square signal that amplitude is 3.3V.
The signal that CMPS Camshaft Position Sensor produces is relatively simple, and its signal processing circuit adopts the process of separated element, and signal processing circuit as shown in Figure 3, comprises the pulse shaping nework and input capture interrupt circuit that are connected.MC9S12DP256 inside is integrated with CAN controller, but from single-chip microcomputer to CAN, still need a CAN driver, and the present embodiment preferably adopts TJA1050 chip as CAN driver.By the RS-232 electrical level transferring chip MAX232 in serial port drive circuit, single-chip microcomputer utilizes asynchronous serial communication protocol to communicate with PC.Exhaust gas oxygen sensor (EGO sensor) detects exhaust gas oxygen, so a feedback signal is provided than closed loop control for realizing sky under part load engine and heat engine idling operation, it so revises fuel injection quantity numerical value than for input quantity is drawn by certain algorithm successively after analog signal conditioner circuit and A/D conversion circuit to measure the sky obtained, and revises fuel injection quantity numerical value and is input to oil sprayer via injector drive circuit and controls reasonable fuel injection quantity thus.The storage unit that extends out of ECU (Electrical Control Unit) ECU adopts FM24C256, and it has the function of two-way two line communications.Idle speed step motor drive circuit adopts the SAA1042 chip of Motorola, and this chip internal is integrated with 3 input stage modules, 1 logic control part and 2 output level module.
ECU (Electrical Control Unit) ECU software demarcation becomes 3 substantial sections: initialization, foreground program and backdrop procedure.Foreground program comprises the interrupt service routines such as tach signal collection, oil spout igniting and serial communication data reception.Crank position and rotary speed information are extremely important to electrical control system for engine, and when prospect occurs to interrupt conflict, master chip CPU should respond the interruption that tach signal causes at first, obtains up-to-date crank position and rotary speed information; And serial communication data reception does not have special requirement of real-time, its priority can come igniting, Injection Control exports after interruption.Backdrop procedure adopts the Design Mode of timing cycle, and the periodicity A/D comprising each analog amount gathers and variable conversion, and all to the undemanding periodicity computational process of requirement of real-time, the calculating etc. of such as fuel injection pulsewidth and ignition advance angle.
The fundamental function of ECU (Electrical Control Unit) ECU software adopts modular design, comprising: the design of system program design module, data acquisition and procession module, rotating speed computing module, interpolating module four modules of tabling look-up.Main program is the key link of control software design, and comprise the initialize routine after control system energising, engine operating condition measures, differentiate and processor, main program flow chart as shown in Figure 4.Modular software design approach makes that calling program orderliness is clear, independence is strong.Object program is downloaded to ECU circuit board with Freescale 16 single-chip microcomputer BDM debuggers, true ECU assemblage on-orbit system based on PXI produces sinusoidal signal and square signal, simulation crankshaft-position signal and camshaft-position signal, setting speed of crankshaft=1000r/min, throttle position 50%, suction pressure 80kpa, run ECU (Electrical Control Unit) ECU object program, oil spout and the firing pulse waveform of ECU output is observed with oscillograph, test the output waveform under this operating mode, the fundamental function of checking ECU, as oil spout and IGNITION CONTROL function, Serial Port Line is used to be connected with PC by ECU, open ECU calibration software, read ECU related data.
1) to injection time and the control of firing time
Oil spout subroutine is the nucleus module of native system control software design, the signal of crank position speed probe obtains square signal through crank position signals of rotational speed sensor processing circuit, and the main body of ECU Injection Control completes in the input capture (CAP) of the square-wave pulse signal of crank position (CAS) speed probe interrupts.Concerning native system, bent axle turns around and 58 CAS signal input captures interruptions will occur, but each contents processing interrupted is relevant with the crank angle of motor.
Basic fuel injection subroutine as shown in Figure 5.Under operating conditions, when ECU receives last hypodontia (the 58th tooth) reference signal that bent axle turns around occurred, complete synchronous process.Then, the engine speed obtained according to the process of motor current A/D change-over circuit and manifold absolute pressure (MAP) (MAP) obtain the basic fuel injection pulsewidth of current working by basic fuel injection pulsewidth MAP interpolation of tabling look-up.Again according to concrete floor data, obtain total fuel injection pulsewidth by other oil spout reduction values or increment.
After ECU carries out counting acquisition injection timing tooth by seizure interruption, cylinder is sentenced according to camshaft signal level, then set the comparing unit injection timing of respective cylinder, and oil sprayer can be controlled on time when exhaust stroke BTDC70 ° by the fuel injection pulsewidth sequential fuel injection calculated.
Single-chip microcomputer is made and is exported response, and responded by this output and determine injection time, the camshaft signal cycle is 120 times of crankshaft signal cycle.Observe injection time with oscillograph, oscilloscope display shows, when rotating speed is 1000r/min, fuel injection pulsewidth is 2.6ms.
2) determination of ignition advance angle
The angular dimension of ignition advance angle is determined by suction pressure and speed of crankshaft, can search the ignition advance angle angle corresponding to any one speed of crankshaft and suction pressure by the method for linear interpolation.Time of ignition is the disconnection moment after spark coil energising, i.e. the trailing edge of fire signal.Ignition advance angle is the angle that in time of ignition to compression top center, bent axle turns over, and the ignition advance angle can observed out in oscillograph is now 23.34 DEG C of A.
3) communicate with upper-position unit
Open ECU calibration software, read ECU related data, comprise suction pressure, intake temperature, throttle opening, coolant temperature, detonation signal voltage and speed of crankshaft.ECU calibration software interface, namely can read ECU data by reading data button, also can preserve data, form is TXT text formatting.
Analysis design mothod result can be found out, ECU (Electrical Control Unit) ECU of the present invention can control injection time and ignition advance angle more exactly under different operating mode, error is all in the scope of 5%, ECU can realize motor oil spout and IGNITION CONTROL, achieves the fundamental function of ECU, can also communicate with one another with upper-position unit, the data of each sensor of motor can be gathered, also can preserve data, download the MAP of EXCEL form, realize ECU on-line proving.
Above-described embodiment is the present invention's preferably mode of execution; but embodiments of the present invention are not restricted to the described embodiments; change, the modification done under other any does not deviate from Spirit Essence of the present invention and principle, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (6)
1. for the control system of CNG/ gasoline dual purpose fuel engine, it is characterized in that, comprise crank position speed probe, CMPS Camshaft Position Sensor, exhaust gas oxygen sensor and ECU (Electrical Control Unit) ECU; Crank position speed probe, CMPS Camshaft Position Sensor and exhaust gas oxygen sensor are connected with the input end of ECU (Electrical Control Unit) ECU respectively, and the output terminal of ECU (Electrical Control Unit) ECU is connected with the igniter of motor, oil sprayer, idle speed step motor respectively.
2. the control system for CNG/ gasoline dual purpose fuel engine according to claim 1, it is characterized in that, described ECU (Electrical Control Unit) ECU comprises crank position signals of rotational speed sensor processing circuit, CMPS Camshaft Position Sensor signal processing circuit, serial port drive circuit, analog signal conditioner circuit, A/D change-over circuit and injector drive circuit; Described analog signal conditioner circuit, A/D change-over circuit, serial port drive circuit connect successively, and analog signal conditioner circuit is connected with exhaust gas oxygen sensor; Described serial port drive circuit is connected with crank position signals of rotational speed sensor processing circuit, CMPS Camshaft Position Sensor signal processing circuit, ignition drive circuit and injector drive circuit respectively.
3. the control system for CNG/ gasoline dual purpose fuel engine according to claim 2, is characterized in that, described crank position signals of rotational speed sensor processing circuit comprises pulse shaping nework and input capture interrupt circuit; Described crank position speed probe, pulse shaping nework, input capture interrupt circuit and serial port drive circuit connect successively.
4. the control system for CNG/ gasoline dual purpose fuel engine according to claim 2, is characterized in that, described CMPS Camshaft Position Sensor signal processing circuit comprises pulse shaping nework and input capture interrupt circuit; Described CMPS Camshaft Position Sensor, pulse shaping nework, input capture interrupt circuit and serial port drive circuit connect successively.
5. the control system for CNG/ gasoline dual purpose fuel engine according to claim 2, is characterized in that, described ECU (Electrical Control Unit) ECU also comprises switching signal Circuit tuning, ignition drive circuit; Described switching signal Circuit tuning, serial port drive circuit, ignition drive circuit connect successively, and switching signal Circuit tuning is connected with the ignition switch of motor, and ignition drive circuit is connected with the igniter of motor.
6. the control system for CNG/ gasoline dual purpose fuel engine according to any one of claim 1-5, is characterized in that, described ECU (Electrical Control Unit) ECU is single-chip microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410403393.0A CN104295380A (en) | 2014-08-15 | 2014-08-15 | Control system for engine consuming CNG/gasoline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410403393.0A CN104295380A (en) | 2014-08-15 | 2014-08-15 | Control system for engine consuming CNG/gasoline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104295380A true CN104295380A (en) | 2015-01-21 |
Family
ID=52315283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410403393.0A Pending CN104295380A (en) | 2014-08-15 | 2014-08-15 | Control system for engine consuming CNG/gasoline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104295380A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104948375A (en) * | 2015-05-05 | 2015-09-30 | 华南农业大学 | CNG (compressed natural gas) engine ignition advancer on basis of closed-loop control and method for controlling CNG engine ignition advancer |
| CN105446226A (en) * | 2015-12-23 | 2016-03-30 | 中国航天空气动力技术研究院 | Aero engine controller |
| CN106814635A (en) * | 2015-11-28 | 2017-06-09 | 华南理工大学 | A kind of liquefied-pertroleum-gas engine system hardware is in ring experiment porch |
| CN106988932A (en) * | 2017-06-02 | 2017-07-28 | 广西玉柴机器股份有限公司 | The gas supply system of CNG natural gas engines |
| CN107061074A (en) * | 2017-06-02 | 2017-08-18 | 广西玉柴机器股份有限公司 | The gas handling system of CNG natural gas engines |
| CN108255146A (en) * | 2016-12-29 | 2018-07-06 | 石家庄益科创新科技有限公司 | Small-sized engine electric-controlled ECU detection devices |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201034050Y (en) * | 2007-04-20 | 2008-03-12 | 哈尔滨工程大学 | Electrical controlled spraying controlling equipment for gas engine |
| CN201133289Y (en) * | 2007-06-05 | 2008-10-15 | 山东申普汽车控制技术有限公司 | Natural gas CNG-gasoline dual fuel engine control system |
| CN102182568A (en) * | 2011-03-29 | 2011-09-14 | 重庆长安汽车股份有限公司 | Injection pulse width control method for natural gas and gasoline dual-fuel engine |
| WO2012073356A1 (en) * | 2010-12-01 | 2012-06-07 | トヨタ自動車 株式会社 | Device for controlling bi-fuel engine |
| CN103628989A (en) * | 2013-11-28 | 2014-03-12 | 武汉市菱电汽车电子有限责任公司 | Automotive CNG and gasoline double-fuel supply system based on simultaneous control by single ECU |
| CN103958860A (en) * | 2011-11-30 | 2014-07-30 | 爱三工业株式会社 | Fuel supply control apparatus for bi-fuel internal combustion engine, and method of switching fuel in bi-fuel internal combustion engine |
-
2014
- 2014-08-15 CN CN201410403393.0A patent/CN104295380A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201034050Y (en) * | 2007-04-20 | 2008-03-12 | 哈尔滨工程大学 | Electrical controlled spraying controlling equipment for gas engine |
| CN201133289Y (en) * | 2007-06-05 | 2008-10-15 | 山东申普汽车控制技术有限公司 | Natural gas CNG-gasoline dual fuel engine control system |
| WO2012073356A1 (en) * | 2010-12-01 | 2012-06-07 | トヨタ自動車 株式会社 | Device for controlling bi-fuel engine |
| CN102182568A (en) * | 2011-03-29 | 2011-09-14 | 重庆长安汽车股份有限公司 | Injection pulse width control method for natural gas and gasoline dual-fuel engine |
| CN103958860A (en) * | 2011-11-30 | 2014-07-30 | 爱三工业株式会社 | Fuel supply control apparatus for bi-fuel internal combustion engine, and method of switching fuel in bi-fuel internal combustion engine |
| CN103628989A (en) * | 2013-11-28 | 2014-03-12 | 武汉市菱电汽车电子有限责任公司 | Automotive CNG and gasoline double-fuel supply system based on simultaneous control by single ECU |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104948375A (en) * | 2015-05-05 | 2015-09-30 | 华南农业大学 | CNG (compressed natural gas) engine ignition advancer on basis of closed-loop control and method for controlling CNG engine ignition advancer |
| CN104948375B (en) * | 2015-05-05 | 2017-01-04 | 华南农业大学 | CNG engine ignition advancing device based on closed loop control and control method |
| CN106814635A (en) * | 2015-11-28 | 2017-06-09 | 华南理工大学 | A kind of liquefied-pertroleum-gas engine system hardware is in ring experiment porch |
| CN105446226A (en) * | 2015-12-23 | 2016-03-30 | 中国航天空气动力技术研究院 | Aero engine controller |
| CN108255146A (en) * | 2016-12-29 | 2018-07-06 | 石家庄益科创新科技有限公司 | Small-sized engine electric-controlled ECU detection devices |
| CN106988932A (en) * | 2017-06-02 | 2017-07-28 | 广西玉柴机器股份有限公司 | The gas supply system of CNG natural gas engines |
| CN107061074A (en) * | 2017-06-02 | 2017-08-18 | 广西玉柴机器股份有限公司 | The gas handling system of CNG natural gas engines |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104295380A (en) | Control system for engine consuming CNG/gasoline | |
| US5199394A (en) | Circuit arrangement for electronic control of an internal combustion engine | |
| CN103699035B (en) | Signal matching method and signal matching device for vehicle engine hardware-in-loop simulation process | |
| CN103114951A (en) | Controlling method of gasoline direct injection engine optimal ignition angular advance | |
| CN102003298A (en) | Real-time feedback device and method of combustion information for controlling engine | |
| CN102042108A (en) | Method for determining an in-cylinder pressure curve within a multi-cylinder engine | |
| CN106762176A (en) | A kind of stroke admission calculation of pressure method of two cylinder machine four | |
| CN202417722U (en) | Marine diesel oil/natural gas mixed combustion system | |
| CN102444489A (en) | Controller for internal combustion engine | |
| CN204716409U (en) | Marine high-pressure common rail diesel engine automatical control system | |
| CN104948375B (en) | CNG engine ignition advancing device based on closed loop control and control method | |
| CN101578606B (en) | Method and system for identifying phase in an internal combustion engine | |
| CN104454188A (en) | Gasoline injection amount control method and system for dual-fuel engine | |
| CN114174654B (en) | System and method for selectively activating engine cylinders to maintain minimum cylinder pressure | |
| Mendonça et al. | Development of an engine control unit: Implementation of the architecture of tasks | |
| Müller et al. | Control of mixture composition using cylinder pressure sensors | |
| CN106593646B (en) | A kind of engine sentences cylinder method and system | |
| CN210769113U (en) | High-precision ignition device with double trigger coils | |
| CN102278255B (en) | Electronic ignition control system for small-sized gasoline engine | |
| CN110487478B (en) | Decision tree-based engine knock detection method, device and equipment and storage medium thereof | |
| CN206129476U (en) | Oil gas convertible vehicle ignition control circuit | |
| CN207620957U (en) | The ignition angle measuring system of miniature gasoline engine | |
| CN205135808U (en) | A electronic control system for small -size single cylinder four -stroke -cycle petrol engine | |
| CN204804962U (en) | Automobile -used natural gas electronic control sprays gas supply system | |
| CN104696133B (en) | Ignition advance angle control method, ignition advance angle controller and engine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150121 |
|
| RJ01 | Rejection of invention patent application after publication |