CN204610047U - A kind of Fuel Control System of the duel fuel engine for automobile - Google Patents
A kind of Fuel Control System of the duel fuel engine for automobile Download PDFInfo
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- CN204610047U CN204610047U CN201520321036.XU CN201520321036U CN204610047U CN 204610047 U CN204610047 U CN 204610047U CN 201520321036 U CN201520321036 U CN 201520321036U CN 204610047 U CN204610047 U CN 204610047U
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Abstract
The utility model discloses a kind of Fuel Control System of the duel fuel engine for automobile, comprise former car ECU and combustion gas ECU, described former car ECU is connected with communication mutual between combustion gas ECU, and described combustion gas ECU comprises former car fuel injection signal collecting device, oil-gas switch switch, ignition signal collection device, signal receiving device, controller, output unit and the sensor for gathering automobile working state; Described former car fuel injection signal collecting device, ignition signal collection device, oil-gas switch switch, sensor are connected with signal receiving device respectively; Described signal receiving device is connected with controller; Described output unit is connected with controller; Described former car fuel injection signal obtains from former car ECU.It is smooth that the utility model makes oil and gas duel fuel engine pattern switch, and effectively improves the control to air inflow/oil inlet quantity, be conducive to the relative optimal selection of air fuel ratio.
Description
Technical field
The utility model belongs to technical field of automobile control, relates to a kind of automotive control system and supply system of duel fuel engine, particularly relates to a kind of machine oil and gas duel fuel engine automotive control system and supply system.
Background technique
Along with the development of World Economics, automobile oneself become people life in a kind of indispensable transport facility.Due to shortage and the too high oil price of petroleum resources, traditional automobile that is fuel with gasoline or diesel oil can not meet development need, fuel oil and combustion gas (CNG, LPG, oven gas etc.) dual-fuel automobile is superior with emission performance, user cost is low, the feature of good economical benefit more and more obtains people attention and welcome in the future.The performance of oil and gas duel fuel engine is decided by the accurate control to fuel gas injection amount, ignition energy and ignition advance angle to a great extent.Due to the greatest differences on fuel oil and combustion gas two kinds of fuel physicochemical properties, when carrying out oil-gas switch, following problem can be caused:
1, the control of air inflow (oil inlet quantity): because combustion gas itself occupies certain volume, when being switched to combustion gas from fuel oil, have the phenomenon be short of power; When being switched to fuel oil from combustion gas, then there will be again unexpected over-emitting black exhaust, the phenomenons such as power character is poor, engine knock.
2, " wet wall " effect: when motor is switched to combustion gas by fuel oil, due to " wet wall " effect, air inlet tube wall has one deck oil film, fuel cut-off transfer jet after, this oil film can enter cylinder combustion burn with air evaporation, increases gas quantity.On the contrary, when motor is switched to fuel oil by combustion gas, one deck oil film can be formed on air inlet tube wall, and can relatively reduce with the fuel oil that air enters in cylinder.
3, the control of air fuel ratio: during oil and gas duel fuel engine patten transformation, engine air-fuel ratio is difficult to control.
Therefore be the important development direction of engine electronic control technology to its automatical control system intellectual technology research.
Model utility content
The technical problems to be solved in the utility model is: the Fuel Control System providing a kind of duel fuel engine for automobile, when carrying out fuel oil and combustion gas switches, accurately can control emitted dose and the time for spraying of fuel oil (combustion gas), making engine mildness.
The purpose of this utility model is achieved through the following technical solutions:
A kind of Fuel Control System of the duel fuel engine for automobile, comprise former car ECU and combustion gas ECU, described former car ECU is connected with communication mutual between combustion gas ECU, and described combustion gas ECU comprises former car fuel injection signal collecting device, oil-gas switch switch, ignition signal collection device, signal receiving device, controller, output unit and the sensor for gathering motor car engine operating state data; Described former car fuel injection signal collecting device, ignition signal collection device, oil-gas switch switch, sensor are connected with signal receiving device respectively; Described signal receiving device is connected with controller; Described output unit is connected with controller; Described former car fuel injection signal obtains from former car ECU, and described fire signal is drawn from the negative pole of spark coil, extracts electronic spark advance angle signal.
Preferably, described former car fuel injection signal collecting device comprises fuel injection pulsewidth signal collector, oil injection time signal picker.Former car fuel injection signal obtains from the output of former car ECU, can the signal of oil injection time signal and fuel injection pulsewidth from this signal.
Preferably, described sensor comprises gas burning system sensor, engine operating condition sensor and temperature transducer.
Preferably, described gas burning system sensor comprises: gaseous-pressure sensor, and for gathering the pressure data of combustion gas in air cylinder, time gaseous-pressure is inadequate, on instrument panel, tutorial light can light; And air inlet pressure sensor, for gathering the pressure data of the combustion gas in admission line.
Preferably, described engine operating condition sensor comprises: throttle position sensor, for gathering the aperture of closure and closing the data of situation, in order to control fuel injection quantity/jet amount, time of ignition and automatic gearbox gear shifting; Crankshaft position sensor, for gathering the data of engine crankshaft corner and piston top dead center, in order to control time of ignition (ignition advance angle) and injection timing, is also the signal source measuring engine speed simultaneously; Air flow sensor, for gathering the data thus the concentration of acquisition cylinder combustion gas that enter engine cylinder air amount size, in this, as the Main Basis calculating and control fuel injection quantity/jet amount; And lambda sensor, for gathering oxygen concentration data in tail gas thus judging the combustion position of motor and the working efficiency of catalyst converter.
Preferably, described temperature transducer comprises: for gathering the first temperature transducer of the coolant temperature data of motor; For gathering the second temperature transducer of the intake temperature data of blast nozzle; And for gathering the three-temperature sensor of the inner oil temperature data of speed changer.
Preferably, described output unit comprises magnetic valve controller, reduction valve control gear, ignition control device, blast nozzle control gear and oil nozzle control gear, and described magnetic valve controller, reduction valve control gear, ignition control device, blast nozzle control gear are connected with described controller respectively with the drive circuit of oil nozzle control gear.
The beneficial effects of the utility model: compared with prior art, the utility model is on the basis of existing automobile, install a set of combustion gas ECU system additional, and both formation are cooperation control but also separate automotive fuel supply system not only mutually.When carrying out fuel oil and combustion gas switches, accurately can control the emitted dose of fuel oil (combustion gas) and the optimal control of time for spraying and air fuel ratio, making engine mildness smooth.
Accompanying drawing explanation
Fig. 1 is the fuel supply system schematic diagram of the utility model duel fuel engine;
Fig. 2 is structural representation of the present utility model.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment, model utility is described further:
For a control system for the duel fuel engine of automobile, be applicable to the duel fuel engine of oil and gas type, the fuel supply system of the type motor comprises: the fuel oil supply system of gas supply system, combustion gas ECU, former car and former car ECU.Combustion gas ECU is connected with former car ECU communication, and both formation are cooperation control but also separate automotive fuel control system not only mutually.The oil supply system of former car comprises fuel tank, oil pump and oil nozzle, and described fuel tank, oil pump and oil nozzle are connected by pipeline, and former car oil supply system is controlled by former car ECU.Described gas supply system comprises air cylinder, solenoid valve, reduction valve, filter cleaner and blast nozzle, and described air cylinder, solenoid valve, reduction valve, filter cleaner are connected by pipeline successively with blast nozzle, and solenoid valve and reduction valve are controlled by combustion gas ECU.
For a control system for the duel fuel engine of automobile, comprise former car ECU and combustion gas ECU, described former car ECU is connected with communication between combustion gas ECU.Described combustion gas ECU comprises former car fuel injection signal collecting device, oil-gas switch switch, ignition signal collection device, signal receiving device, controller, output unit and the sensor for gathering motor car engine operating state data; Described former car fuel injection signal collecting device, ignition signal collection device, oil-gas switch switch, sensor are connected with signal receiving device respectively; Described signal receiving device is connected with controller; Described output unit is connected with controller.
The chip selection of described controller is Freescale MC9S12XEP100 chip, this chip is a microprocessor of 16 bit of motorola inc, the flash memories (Flash) of Embedded 1MB, the EEPROM of 4KB, the RAM of 64KB, the control of I/O and expansion capability, antijamming capability and adaptive capacity stronger, be integrated with many standard modules for automotive electronics function simultaneously, as 8 road serial communication interfaces (SCI), 3 tunnel serial device interfaces (SPI), 8 16, tunnel enhancement mode catch timer (ECT), 28, tunnels Abort Timer (PIT), 2 10, independence 16 tunnel analog-digital converters (ADC), 88, passage pulse width modulators (PWM), 5 road bus communications (CAN) etc.
Described fire signal is drawn from the negative pole of spark coil, extracts electronic spark advance angle signal.Described former car fuel injection signal collecting device comprises fuel injection pulsewidth signal collector, oil injection time signal picker.Former car fuel injection signal obtains from the output of former car ECU, can the signal of oil injection time signal and fuel injection pulsewidth from this signal.
Described sensor comprises gas burning system sensor, engine operating condition sensor and temperature transducer.
Gas burning system sensor comprises: gaseous-pressure sensor and air inlet pressure sensor.Gaseous-pressure sensor is arranged on the air cylinder of storage combustion gas, for gathering the pressure data of combustion gas in air cylinder, sends alarm signal when pressure is inadequate, and the tutorial light simultaneously on instrument panel lights; Air inlet pressure sensor, for gathering the pressure data of the combustion gas in admission line, is converted into the length that electrical signal controls electronic oil spout (jet) time after controller process.
Operating mode sensor comprises: throttle position sensor, crankshaft position sensor, air flow sensor and lambda sensor.Throttle position sensor is for gathering the aperture of closure and closing the data of situation, in order to control fuel injection quantity/jet amount, time of ignition and automatic gearbox gear shifting; Crankshaft position sensor, for gathering the data of engine crankshaft corner and piston top dead center, in order to control time of ignition (ignition advance angle) and injection timing, is also the signal source measuring engine speed simultaneously; Air flow sensor, for gathering the data thus the concentration of acquisition cylinder combustion gas that enter engine cylinder air amount size, in this, as the Main Basis calculating and control fuel injection quantity/jet amount; Lambda sensor is installed on automobile exhaust pipe, for gathering oxygen concentration data in tail gas thus judging the combustion position of motor and the working efficiency of catalyst converter.
Temperature transducer comprises: for gathering the first temperature transducer of the coolant temperature data of motor; For gathering the second temperature transducer of the intake temperature data of blast nozzle; And for gathering the three-temperature sensor of the inner oil temperature data of speed changer.
Described output unit comprises magnetic valve controller, reduction valve control gear, ignition control device, blast nozzle control gear and oil nozzle control gear, for control blast nozzle/oil nozzle jet/oil injection time, jet/fuel injection pulsewidth, jet/injection period and time of ignition, ensure motor stable working when fuel oil and combustion gas switch.
Claims (7)
1. for a Fuel Control System for the duel fuel engine of automobile, comprise former car ECU and combustion gas ECU, described former car ECU is connected with communication mutual between combustion gas ECU, it is characterized in that:
Described combustion gas ECU comprises former car fuel injection signal collecting device, oil-gas switch switch, ignition signal collection device, signal receiving device, controller, output unit and the sensor for gathering motor car engine operating state data;
Described former car fuel injection signal collecting device, ignition signal collection device, oil-gas switch switch, sensor are connected with signal receiving device respectively;
Described signal receiving device is connected with controller;
Described output unit is connected with controller;
Described former car fuel injection signal obtains from former car ECU.
2. the Fuel Control System of a kind of duel fuel engine for automobile according to claim 1, is characterized in that: described former car fuel injection signal collecting device comprises fuel injection pulsewidth signal collector, oil injection time signal picker.
3. the Fuel Control System of a kind of duel fuel engine for automobile according to claim 1, is characterized in that: described sensor comprises gas burning system sensor, engine operating condition sensor and temperature transducer.
4. the Fuel Control System of a kind of duel fuel engine for automobile according to claim 3, is characterized in that: described gas burning system sensor comprises:
Gaseous-pressure sensor, for gathering the pressure data of combustion gas in air cylinder; And
Air inlet pressure sensor, for gathering the pressure data of the combustion gas in admission line.
5. the Fuel Control System of a kind of duel fuel engine for automobile according to claim 3, is characterized in that: described engine operating condition sensor comprises:
Throttle position sensor, for gathering the aperture of closure and closing the data of situation;
Crankshaft position sensor, for gathering the data of engine crankshaft corner and piston top dead center;
Air flow sensor, for gathering the data thus the concentration of acquisition cylinder combustion gas that enter engine cylinder air amount size; And
Lambda sensor, for gathering oxygen concentration data in tail gas thus judging the combustion position of motor and the working efficiency of catalyst converter.
6. the Fuel Control System of a kind of duel fuel engine for automobile according to claim 3, is characterized in that: described temperature transducer comprises:
For gathering the first temperature transducer of the coolant temperature data of motor;
For gathering the second temperature transducer of the intake temperature data of blast nozzle; And
For gathering the three-temperature sensor of the inner oil temperature data of speed changer.
7. the Fuel Control System of a kind of duel fuel engine for automobile according to claim 1, it is characterized in that: described output unit comprises magnetic valve controller, reduction valve control gear, ignition control device, blast nozzle control gear and oil nozzle control gear, described magnetic valve controller, reduction valve control gear, ignition control device, blast nozzle control gear are connected with described controller respectively with the drive circuit of oil nozzle control gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520321036.XU CN204610047U (en) | 2015-05-19 | 2015-05-19 | A kind of Fuel Control System of the duel fuel engine for automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520321036.XU CN204610047U (en) | 2015-05-19 | 2015-05-19 | A kind of Fuel Control System of the duel fuel engine for automobile |
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| CN204610047U true CN204610047U (en) | 2015-09-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520321036.XU Expired - Fee Related CN204610047U (en) | 2015-05-19 | 2015-05-19 | A kind of Fuel Control System of the duel fuel engine for automobile |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104879226A (en) * | 2015-05-19 | 2015-09-02 | 贵州大学 | Fuel control system for double-fuel engine of automobile |
| CN107949690A (en) * | 2015-09-16 | 2018-04-20 | 洋马株式会社 | Engine device |
-
2015
- 2015-05-19 CN CN201520321036.XU patent/CN204610047U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104879226A (en) * | 2015-05-19 | 2015-09-02 | 贵州大学 | Fuel control system for double-fuel engine of automobile |
| CN107949690A (en) * | 2015-09-16 | 2018-04-20 | 洋马株式会社 | Engine device |
| CN107949690B (en) * | 2015-09-16 | 2021-02-05 | 洋马动力科技有限公司 | Engine device |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150902 Termination date: 20210519 |