CN102146853B - Control system for natural gas/gasoline dual-fuel engine - Google Patents
Control system for natural gas/gasoline dual-fuel engine Download PDFInfo
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- CN102146853B CN102146853B CN 201110076659 CN201110076659A CN102146853B CN 102146853 B CN102146853 B CN 102146853B CN 201110076659 CN201110076659 CN 201110076659 CN 201110076659 A CN201110076659 A CN 201110076659A CN 102146853 B CN102146853 B CN 102146853B
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Abstract
The invention discloses a control system for a natural gas/gasoline dual-fuel engine and belongs to the development field of electronic control of an engine. The control system is that a natural gas supply system, a natural gas control logic device, an air nozzle and a drive circuit thereof are additionally arranged on the basis of the control system of the original gasoline engine. The natural gas injection pulse width and the ignition timing in a single ECU (Electronic Control Unit) of the natural gas/gasoline dual-fuel engine are obtained through correcting the gasoline injection pulse width and the ignition timing under the same rotation speed and load conditions. An oil nozzle and the air nozzle share a high-power drive circuit and a power driver of the control system of the prior gasoline engine; and the switchover of the oil nozzle and the air nozzle is realized through controlling a relay in a natural gas/gasoline selection device with the ECU. The control system simplifies a logic driving circuit of the prior dual-fuel ECU, improves the driving efficiency, changes the control system of the prior gasoline engine as little as possible and has a simple circuit and low cost.
Description
Technical field
The invention belongs to Motronic control maps control field, relate to a kind of duel fuel engine control system, particularly relate to a kind of rock gas and gasoline dual fuel engine control system.
Background technique
Increasingly serious along with environment, energy problem, rock gas has become one of important fuel of motor.Gasoline engine refitting is become rock gas/gasoline dual fuel engine, can the more efficient use energy, alleviate environmental crisis.Existing natural gas/gasoline duel fuel engine control system block diagram has been stored control logic under the gasoline pattern and the control logic under the rock gas pattern as shown in Figure 1 among the main control chip MCU of ECU; Aspect actuator driven, oil nozzle drives with one road high-power drive circuit and analog line driver, and blast nozzle drives with one road high-power drive circuit and analog line driver.High-power drive circuit and the analog line driver of the driving blast nozzle that increases are changed greatly ECU hardware circuit complexity, cost height to former petrol engine ECU hardware circuit.And the multiplication of the storage code amount among the duel fuel engine list ECU, memory consumption is big, and operational efficiency reduces.
Summary of the invention
For overcoming the above-mentioned problems in the prior art, the present invention is the natural gas/gasoline duel fuel engine with former gasoline engine refitting, a kind of natural gas/gasoline duel fuel engine control system is proposed, set up injection pulse width correcting logic and ignition timing correcting logic on the basis of former fuel oil control logic, under the combustion gas state, directly fuel pulsewidth and fuel injection pulsewidth correction are exported to outside natural gas/gasoline selection device for combustion gas pulsewidth and jet pulse width signal, make the oil and gas signal share the output of one road circuit, simplify existing double fuel ECU logic drive circuit, promote and drive efficient, few to existing oil-burning machine circuit change, reduce development cost.
The present invention is specifically by the following technical solutions:
A kind of rock gas and gasoline dual fuel engine control system, it comprises main control chip MCU, high-power drive circuit, analog line driver, ignition drive circuit, decompressor drive circuit, signal processing circuit, natural gas/gasoline selection device, wherein:
Injection pulse width correction module and ignition timing correction module are set in main control chip MCU;
Sensor signal inputs to the main control chip MCU of control system by signal processing circuit, judges whether combustion gas pattern or the fuel oil pattern of switching engine according to sensor signal;
Described duel fuel engine control system output relay control signal natural gas/gasoline selection device carries out the switching of combustion gas pattern and/or the fuel oil pattern of motor;
Described injection pulse width correction module is exported corresponding fuel oil injection pulse width signal or fuel gas injection pulse width signal to described natural gas/gasoline selection device by high-power drive circuit, analog line driver successively;
Described ignition timing correction module by spark coil drive circuit output fuel ignition timing signal and/or gas ignition timing signal to spark coil;
Described main control chip MCU control decompression drive circuit, the decompression drive circuit is connected to the decompressor solenoid valve.
Natural gas injection pulsewidth and ignition timing are to obtain by gasoline injection pulse width and ignition timing under correction same rotational speed, the load condition among the ECU of this natural gas/gasoline duel fuel engine.Oil nozzle and blast nozzle share high-power drive circuit and the analog line driver of former petrol engine control system, and the switching of oil nozzle and blast nozzle is to realize by the relay in the ECU control natural gas/gasoline selection device.
Native system will judge that being in the rock gas mode state must satisfy four condition: ECU simultaneously and collect rock gas request switching signal, rock gas air cylinder pressure is not less than setting value, engine speed meets or exceeds the setting rotating speed, the temperature of motor can not be too low, the engine temperature that should be higher than setting, namely motor must move a period of time.Do not satisfy arbitrary condition, ECU judges that motor is in the fuel oil state.
The injection pulse width correction module comprises rock gas, two kinds of patterns of gasoline injection pulse width, if be in the gasoline pattern, the injection pulse width of injection pulse width correction module output is the fuel oil injection pulse width; If be in the rock gas pattern, the injection pulse width of injection pulse width correction module output is the natural gas injection pulsewidth after proofreading and correct.
The ignition timing of ignition timing correction module output comprises ignition timing signal under the gasoline pattern and the ignition timing signal under the rock gas pattern, and the ignition timing signal under the gasoline pattern is the ignition timing signal of former petrol engine ECU output; Under the rock gas pattern, natural gas fired regularly is the correction to the gasoline ignition timing of motor under same rotational speed and load, obtain revising ignition timing according to tach signal and engine load inquiry correction igniting MAP, gasoline ignition timing and correction ignition timing sum are the ignition timing of rock gas.Gasoline igniting MAP is under different rotating speeds and load with correction igniting MAP and carries out engine rig test, makes excess air coefficient equal the two-dimentional form that demarcation in 1 o'clock obtains, and is stored in the program storage of master chip, for the control logic inquiry.
The natural gas/gasoline selection device that the present invention adopts is divided into many groups, and is corresponding with the cylinder number of motor; Each group all comprises a relay, an oil nozzle and a blast nozzle; Wherein, the common port of oil nozzle solenoid valve and blast nozzle solenoid valve is by a pin control of duel fuel engine control system, the other end of oil nozzle solenoid valve and blast nozzle solenoid valve is respectively by relay normally open or normally-closed contact control, whether described duel fuel engine control system selects to be communicated with oil nozzle or blast nozzle by the energising of relay coil, by ground connection time decision fuel oil and/or the fuel gas injection pulsewidth of oil nozzle and blast nozzle solenoid valve common port.
The invention has the advantages that: the natural gas/gasoline dual-fuel control system increases injection pulse width correcting logic, the ignition timing correcting logic of rock gas on the basis of former petrol engine ECU, under the combustion gas state, directly fuel injection amount, fuel ignition time are modified to fuel gas injection amount, gas ignition time, optimized double fuel ECU control logic in the prior art, special high-power drive circuit and power driving circuit at combustion gas have been reduced, promoted ECU double fuel control response efficient, few to existing petrol engine hardware modifications, the economize on hardware development cost.Further, the natural gas/gasoline selection device of invention, switch oil nozzle/blast nozzle by the ECU control relay, utilize high-power drive circuit and the analog line driver of former petrol engine to drive oil nozzle/blast nozzle, after increasing the combustion gas function, change to former petrol engine ECU hardware circuit is few, simple in structure, and cost is low.
Description of drawings
Fig. 1 is existing natural gas/gasoline duel fuel engine control system block diagram;
Fig. 2 is natural gas/gasoline duel fuel engine control system block diagram of the present invention;
Fig. 3 is the natural gas/gasoline selection device;
Fig. 4 is the injection pulse width correction module;
Fig. 5 is the ignition timing correction module.
Embodiment
The present invention is described further below in conjunction with Figure of description.
Fig. 2 is the duel fuel engine control system block diagram of the embodiment of the invention, this control system is that the petrol engine control system is reequiped, the content that increases on the basis of petrol engine control system comprises the injection pulse width correcting logic of natural gas supply system, sensor, natural gas/gasoline selection device (as shown in Figure 3), rock gas and ignition timing correcting logic etc., and natural gas supply system adopts existing mature technology.Sensor signal comprises former petrol engine sensor signal and newly-increased sensor signal, the sensor that former petrol engine sensor adopts former machine to be equipped with, the sensor that (for example crankshaft position sensor, CMPS Camshaft Position Sensor, cooling water temperature sensor, detonation sensor etc.) increase newly comprises rock gas request switching signal, rock gas air cylinder pressure signal, fuel gas temperature sensor signal, decompressor temperature sensor signal etc., has increased injection pulse width correction module 1, ignition timing correction module 2 etc. in the main control chip MCU of ECU.Former petrol engine sensor and the sensor signal that increases newly are exported to main control chip MCU after signal processing circuit is handled, whether main control chip MCU switches to the rock gas state according to signal determinings such as driver's operation request switch, engine cooling water temperature, CNG gas cylinder gas-storing capacity, engine speed.ECU is according to the control logic of writing in the sensor signal that collects and the master chip, by output injection pulse width signal, relay control signal, decompressor electromagnetic valve signal, ignition timing signal and fuel state index signals etc. such as oil nozzle/blast nozzle drive circuit, decompressor drive circuit and spark coil drive circuits.
Wherein injection pulse width correction module 1 comprises rock gas, two kinds of patterns of gasoline injection pulse width, if be in the gasoline pattern, the injection pulse width of injection pulse width correction module 1 output is the fuel oil injection pulse width; If be in the rock gas pattern, the injection pulse width of injection pulse width correction module 1 output is the natural gas injection pulsewidth.
The ignition timing of ignition timing correction module 2 output comprises ignition timing signal under the gasoline pattern and the ignition timing signal under the rock gas pattern, and the ignition timing signal under the gasoline pattern is the ignition timing signal of former petrol engine ECU output; Under the rock gas pattern, natural gas fired regularly is the correction to the gasoline ignition timing of motor under same rotational speed and load, obtain revising ignition timing according to tach signal and engine load inquiry correction igniting MAP, gasoline ignition timing and correction ignition timing sum are the ignition timing of rock gas.
Fig. 3 is the natural gas/gasoline selection device, and the natural gas/gasoline selection device can be divided into many groups, and each group is a relay 4, an oil nozzle and a blast nozzle all.Wherein, the common port of oil nozzle solenoid valve and blast nozzle solenoid valve is by pin control of ECU, and the other end is controlled by relay normally open or normally-closed contact respectively, a termination 12V voltage of relay coil, and the other end is by pin control of ECU.Whether the energising of relay coil determines to select oil nozzle or blast nozzle, and the ground connection time of oil nozzle and blast nozzle solenoid valve common port determines the injection pulse width of fuel.Select oil nozzle/blast nozzle with relay, the drive circuit driving blast nozzle with former oil nozzle has reduced the change amount to former petrol engine, saves cost.Common port with pin control oil nozzle/blast nozzle of ECU under ECU pin condition of limited, improves the utilization ratio of ECU pin.The demonstration of gas quantity is to be driven by other drive circuit in the gas cylinder.
The embodiment of the invention is four cylinder engine, and each cylinder is by one group of oil nozzle/blast nozzle.Wherein, 4 d wiring terminals and 4 e wiring terminals of relay group connect the 12V power supply, normally-closed contact c and oil nozzle solenoid valve positive pole join, and normally opened contact b and blast nozzle solenoid valve positive pole join, and the public negative pole end of each group oil nozzle/blast nozzle solenoid valve is by the pin f control of ECU.4 a wiring terminals of relay group coil are connected together by the pin g control of ECU, when engine combustion gasoline, ECU control pin g, during the relay coil no electric circuit, the switch of relay is in normally-closed contact c place, and the positive pole of oil nozzle connects the power supply of 12V, the gasoline injection pulse width that ECU calculates according to main control chip MCU, by pin f control oil nozzle solenoid valve current"on"time, and then control the gasoline injection amount of the every cylinder of every circulation.When the engine combustion rock gas, ECU is by the energising of pin g control relay coil, make relay switch be in normally opened contact b place, the positive pole of blast nozzle connects the power supply of 12V at this moment, the natural gas injection pulsewidth that ECU calculates according to main control chip MCU, by control pin f, control blast nozzle solenoid valve current"on"time, and then control the emitted dose of the every cylinder rock gas of every circulation.
Fig. 4 is the injection pulse width correction module, comprises gasoline injection pulse width signal, tach signal, fuel state signal, decompressor temperature signal, natural gas temperature signal, natural pressure force signal, fuel selection switch 5.Behind the engine start, ECU obtains fuel oil injection pulse width signal according to former petrol engine control system, obtains fuel oil state or combustion gas state according to rock gas request switch, engine cooling water temperature, CNG gas-storing capacity, four signals of engine speed.If be in the gasoline state, fuel selection switch 5 is selected the m passage, ECU output gasoline injection pulse width signal tp; If be in the rock gas state, fuel selection switch 5 is selected the n passages, ECU according to gasoline injection pulse width signal tp and engine speed rpm inquiry natural gas injection pulse width conversion coefficient k (tp, rpm), for example at tp=6ms, during rpm=2500r/min, k=86.Simultaneously according to decompressor temperature T r, rock gas work temperature g, corresponding correction factor k1 (Tr), k2 (Tg), the k3 (Pg) of different jet pressure poor (rock gas gas rail pressure Pg is poor with suction pressure MAP's) inquiry.The formula of natural gas injection pulsewidth is:
tg?=?[k(tp;rpm)+k1(Tr)+k2(Tg)+k3(Pg)]×tp
Tg is the natural gas injection pulsewidth, k is natural gas injection pulse width conversion coefficient, k1 is the decompressor temperature compensation coefficient, k2 natural gas temperature penalty coefficient, k3 gas pressure penalty coefficient, tp are the gasoline injection pulse widths, rpm is the rotating speed of motor, Tr is the decompressor temperature, and Tg is natural gas temperature, and Pg is gas pressure.
Under the rock gas pattern, ECU obtains rock gas pulse width conversion coefficient k according to gasoline injection pulse width tp and rotating speed rpm inquiry, inquiry obtains decompressor temperature compensation coefficient k1 according to decompressor temperature signal Tr, inquiry obtains natural gas temperature penalty coefficient k2 according to natural gas temperature Tg, and inquiry obtains gas pressure penalty coefficient k3 according to different jet pressures poor (rock gas gas rail pressure Pg and suction pressure MAP's is poor).Natural gas injection pulse width conversion coefficient k, decompressor temperature compensation coefficient k1, natural gas temperature penalty coefficient k2, gas pressure penalty coefficient k3 carry out the engine pedestal rating test under different rotating speeds, load, excess air coefficient equals demarcation in 1 o'clock and obtains.
Fig. 5 is the ignition timing correction module, comprises tach signal, load signal, fuel state, gasoline igniting MAP, revises igniting MAP, fuel selection switch 6.If be in the gasoline state, fuel selection switch 6 is selected the p passage, and ECU is according to tach signal and load signal inquiry gasoline igniting MAP, output igniting timing signal; If be in the rock gas state, fuel selection switch 6 is selected the q passage, ECU revises igniting MAP and gasoline igniting MAP according to the load inquiry of signals of rotational speed sensor and motor, and correction ignition timing and the addition of inquiring about of gasoline ignition timing obtained the natural gas fired timing signal.Wherein gasoline igniting MAP is under different rotating speeds and load with correction igniting MAP and carries out engine rig test, makes excess air coefficient equal the two-dimentional form that demarcation in 1 o'clock obtains, and is stored in the program storage of master chip, for the control logic inquiry.
Protection scope of the present invention is not limited to the above embodiments, and obviously, those skilled in the art can carry out various changes and distortion and do not depart from the scope of the present invention and spirit the present invention.If these changes and distortion belong in the scope of claim of the present invention and equivalent technologies thereof, then the intent of the present invention also comprises these changes and is out of shape interior.
Claims (7)
1. a rock gas and gasoline dual fuel engine control system, comprise main control chip MCU, high-power drive circuit, analog line driver, ignition drive circuit, decompressor drive circuit, signal processing circuit, natural gas/gasoline selection device, it is characterized in that:
Petrol engine control module, injection pulse width correction module are set in main control chip MCU;
Sensor signal inputs to the main control chip MCU of control system by signal processing circuit, and main control chip MCU judges whether combustion gas pattern or the fuel oil pattern of switching engine according to sensor signal;
Described duel fuel engine control system output relay control signal is carried out the switching of combustion gas pattern or the fuel oil pattern of motor to the natural gas/gasoline selection device;
Described injection pulse width correction module is exported corresponding fuel oil injection pulse width signal or fuel gas injection pulse width signal to described natural gas/gasoline selection device by high-power drive circuit, analog line driver successively;
Described main control chip MCU control decompression drive circuit, the decompression drive circuit is connected to the decompressor solenoid valve;
Igniting correction of timing module also further is set in described main control chip MCU, described ignition timing correction module by spark coil drive circuit output fuel ignition timing signal or gas ignition timing signal to spark coil;
When duel fuel engine worked in the combustion gas pattern, the fuel gas injection pulse width signal behind the injection pulse width correction module output calibration was to blast nozzle; The formula of described fuel gas injection pulsewidth is:
tg?=?[k(tp;rpm)+k1(Tr)+k2(Tg)+k3(Pg)]×tp
Tg is the natural gas injection pulsewidth, k is natural gas injection pulse width conversion coefficient, k1 is the decompressor temperature compensation coefficient, k2 natural gas temperature penalty coefficient, k3 gas pressure penalty coefficient, tp are the gasoline injection pulse widths, rpm is the rotating speed of motor, Tr is the decompressor temperature, and Tg is natural gas temperature, and Pg is gas pressure;
When duel fuel engine works in the combustion gas pattern, the ignition timing signal of ignition timing correction module output is the natural gas fired timing signal after proofreading and correct, described natural gas fired timing signal is to revise igniting MAP and gasoline igniting MAP by the duel fuel engine control system according to engine rotational speed signal and load signal inquiry, and correction ignition timing and the addition of inquiring about of gasoline ignition timing obtained.
2. duel fuel engine control system according to claim 1 is characterized in that:
Described sensor signal comprises former petrol engine sensor signal and newly-increased sensor signal, and wherein newly-increased sensor signal comprises rock gas request switching signal, rock gas air cylinder pressure signal, fuel gas temperature sensor signal, decompressor temperature sensor signal.
3. duel fuel engine control system according to claim 1 and 2 is characterized in that:
When described main control chip collects rock gas request switching signal, and described rock gas air cylinder pressure is not less than setting value, and engine speed meets or exceeds the setting rotating speed, and engine temperature judges then that greater than setting temperature motor switches to the combustion gas pattern.
4. duel fuel engine control system according to claim 1 is characterized in that:
The natural gas/gasoline selection device is divided into many groups, and is corresponding with the cylinder number of motor; Each group all comprises a relay, an oil nozzle and a blast nozzle; Wherein, the common port of oil nozzle solenoid valve and blast nozzle solenoid valve is by a pin control of duel fuel engine control system, the other end of oil nozzle solenoid valve and blast nozzle solenoid valve is respectively by relay normally open or normally-closed contact control, whether described duel fuel engine control system selects to be communicated with oil nozzle or blast nozzle by the energising of relay coil, by ground connection time decision fuel oil and/or the fuel gas injection pulsewidth of oil nozzle and blast nozzle solenoid valve common port.
5. according to claim 1,2 or 4 described duel fuel engine control system, it is characterized in that:
When duel fuel engine worked in the fuel oil pattern, the injection pulse width signal of injection pulse width correction module output was fuel oil injection pulse width signal, to oil nozzle.
6. duel fuel engine control system according to claim 5 is characterized in that:
Under the rock gas pattern, ECU obtains rock gas pulse width conversion coefficient k according to gasoline injection pulse width tp and rotating speed rpm inquiry, inquiry obtains decompressor temperature compensation coefficient k1 according to decompressor temperature signal Tr, inquiry obtains natural gas temperature penalty coefficient k2 according to natural gas temperature Tg, be that the difference inquiry of rock gas gas rail pressure Pg and suction pressure MAP obtains gas pressure penalty coefficient k3 according to different jet pressure differences, natural gas injection pulse width conversion coefficient k, decompressor temperature compensation coefficient k1, natural gas temperature penalty coefficient k2, gas pressure penalty coefficient k3 is at different rotating speeds, carry out the engine pedestal rating test under the load, excess air coefficient equals demarcation in 1 o'clock and obtains.
7. according to claim 1,2 or 4 described duel fuel engine control system, it is characterized in that:
When duel fuel engine worked in the fuel oil pattern, ignition timing correction module output igniting timing signal was to spark coil, and this ignition timing signal is the ignition timing signal of former petrol engine ECU output.
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| CN102953846B (en) * | 2011-08-25 | 2017-05-17 | 上海格令汽车电子有限公司 | Electric-control system and electric-control method for dual-purpose fuel engine |
| CN102996268B (en) * | 2011-09-16 | 2015-07-01 | 十堰科纳汽车电器有限公司 | Automotive dual-fuel co-combustion method and control system |
| CN103422997B (en) * | 2012-05-24 | 2016-06-08 | 北汽福田汽车股份有限公司 | Fuel feed system, method and comprise the automobile of this system |
| CN102748144A (en) * | 2012-07-18 | 2012-10-24 | 奇瑞汽车股份有限公司 | Gasoline and CNG (compressed natural gas) dual-fuel control system |
| CN103174527B (en) * | 2013-03-21 | 2016-01-06 | 山东赛马力发电设备有限公司 | A kind of biogas or rock gas and gasoline dual-purpose motor |
| CN104653308B (en) * | 2013-11-20 | 2017-02-01 | 比亚迪股份有限公司 | Calibration method and calibration device for gasoline-hydrogen fueled engine |
| CN103835818B (en) * | 2014-03-18 | 2016-07-27 | 武汉理工大学 | A kind of independent control type ignition switch auxiliary type dual-purpose fuel method for handover control |
| CN104454186B (en) * | 2014-10-27 | 2017-01-11 | 奇瑞汽车股份有限公司 | Vehicle double-fuel system oil pump control method |
| CN104863730B (en) * | 2015-05-15 | 2018-07-27 | 隆鑫通用动力股份有限公司 | Suitching type fuel system, engine and generating set |
| CN104879226A (en) * | 2015-05-19 | 2015-09-02 | 贵州大学 | Fuel control system for double-fuel engine of automobile |
| CN105626284A (en) * | 2015-12-30 | 2016-06-01 | 潍柴动力股份有限公司 | Gas flow control method and device of dual-fuel engine |
| CN107461289B (en) * | 2017-08-24 | 2019-03-12 | 中国第一汽车股份有限公司 | The method of adjustment of the gasoline natural gas flexible fuel engine angle of ignition |
| CN108087135B (en) * | 2017-12-15 | 2020-09-04 | 奇瑞汽车股份有限公司 | Control method and device for dual-fuel vehicle |
| CN108361113B (en) * | 2018-01-03 | 2023-09-22 | 中国第一汽车股份有限公司 | Method for calculating natural gas injection pulse width in transient process of gasoline and natural gas dual-purpose fuel engine |
| CN110080898B (en) * | 2019-04-09 | 2022-06-17 | 哈尔滨工程大学 | Timing synchronization method for distributed control system of micro-ignition dual-fuel engine |
| CN113898482A (en) * | 2021-10-29 | 2022-01-07 | 华北水利水电大学 | Control system and control method of biogas fuel engine for heat pump |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201184264Y (en) * | 2008-04-22 | 2009-01-21 | 陈虎声 | Ignition system of double-fuel motorcycle engine |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007332814A (en) * | 2006-06-13 | 2007-12-27 | Nikki Co Ltd | Method and device for ignition control of gasoline alternate fuel engine |
| JP4795876B2 (en) * | 2006-07-07 | 2011-10-19 | 株式会社ニッキ | Ignition control method and apparatus for gasoline alternative fuel engine |
| JP4989281B2 (en) * | 2007-04-10 | 2012-08-01 | 株式会社ニッキ | Gas engine fuel supply method and gasoline alternative gas fuel injection control device |
-
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201184264Y (en) * | 2008-04-22 | 2009-01-21 | 陈虎声 | Ignition system of double-fuel motorcycle engine |
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