CN217107237U - Multi-fuel electric spraying control device of universal small gasoline engine - Google Patents
Multi-fuel electric spraying control device of universal small gasoline engine Download PDFInfo
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- CN217107237U CN217107237U CN202220773585.0U CN202220773585U CN217107237U CN 217107237 U CN217107237 U CN 217107237U CN 202220773585 U CN202220773585 U CN 202220773585U CN 217107237 U CN217107237 U CN 217107237U
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Abstract
The utility model provides a general small gasoline engine many fuel electricity spouts controlling means, the device includes fuel electricity spouts the system, still include gas control system, this gas control system includes gas controller, gas pressure sensor and spray tube, this gas controller is connected with the ECU of fuel electricity spouts the system, this gas pressure sensor installs in the gas passageway and is connected with this gas controller, this spray tube is connected with this gas controller and communicates with the throttle valve hole of small gasoline engine, this gas controller adjusts the aperture of this spray tube in order to satisfy the required gas flow of engine, this gas pressure sensor gathers the working pressure data of gas and conveys this gas controller with the automatic correction flow data, compensate the flow variation that different gas air feed pressure produced, guarantee engine job stabilization. The utility model also provides a general small-size gasoline engine multi-fuel electric injection control method of the device. The utility model provides the high control accuracy of gas flow has energy saving and emission reduction's effect.
Description
Technical Field
The utility model relates to an electronic injection control technology of a general small gasoline engine, in particular to a multi-fuel electronic injection control device of the general small gasoline engine.
Background
The small gasoline engine electronic injection control technology in the prior art is basically a single-fuel electronic injection control mode, and the conventional fuel gas scheme controls flow through a mechanical diaphragm type flow valve, so that the flow precision is relatively unstable, when the air supply pressure changes, the flow fluctuation is larger, the operation step of starting the engine is more complicated, and the operation experience is poorer.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that to the above-mentioned defect of prior art, provide a general small-size gasoline engine multifuel electricity spouts controlling means.
In order to realize the above-mentioned purpose, the utility model provides a many fuel electricity of general small gasoline engine spouts controlling means, including fuel electricity spouts the system, wherein, still includes gas control system, gas control system includes gas controller, gas pressure sensor and spray tube, gas controller with the ECU of fuel electricity spouts the system connects, gas pressure sensor install in gas channel and with gas controller connects, the spray tube with gas controller connect and communicate with small gasoline engine's throttle opening, gas controller adjusts the aperture of spray tube is in order to satisfy the required gas flow of engine, gas pressure sensor gathers the operating pressure data of gas and conveys to gas controller is with automatic correction flow data.
In the multi-fuel electronic injection control device of the general small gasoline engine, the fuel gas controller is an electromagnetic valve or a stepping motor.
In the multi-fuel electronic injection control device for the general small gasoline engine, the gas controller is an electromagnetic valve, adopts a set frequency or variable frequency mode, and adjusts the flow rate of the gas by adjusting the opening time of the electromagnetic valve.
In the multi-fuel electronic injection control device for the general small gasoline engine, the fuel gas controller is a stepping motor, and the ECU controls the flow rate of the fuel gas by controlling the step number of the stepping motor to adjust the opening degree of the nozzle.
In the multi-fuel electric injection control device for the general small gasoline engine, the gas control system and the fuel electric injection system are integrated into a whole, or the gas control system and the fuel electric injection system are split structures and are connected through a pipeline.
The multi-fuel electric injection control device of the universal small gasoline engine further comprises a multi-gear switch connected with the ECU of the fuel electric injection system.
In the multi-fuel electronic injection control device for the universal small gasoline engine, the multi-gear switch sends an on-off signal to the ECU when the engine is started at a low temperature.
In the multi-fuel electronic injection control device for the universal small gasoline engine, the gas pressure sensor acquires a gas pressure value and judges whether the gas pressure value is greater than a pressure set value.
The multi-fuel electronic injection control device of the universal small gasoline engine further comprises an oxygen sensor for collecting oxygen content data discharged by tail gas of the engine and transmitting the oxygen content data to the ECU.
In the multi-fuel electronic injection control device for the universal small gasoline engine, the fuel gas control system independently realizes independent fuel gas electronic control.
The technical effects of the utility model reside in that:
the utility model discloses a multi-fuel is used on general small-size gasoline engine, has promoted the control accuracy of gas flow to can carry out the flow correction according to the size of gas pressure is automatic, adopt solenoid valve or step motor to carry out flow control, the engine can fully utilize the electrical system of gas, carries out closed-loop control through oxygen sensor, makes the engine operation in the within range of ideal air-fuel ratio, plays energy saving and emission reduction's effect.
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments, but the present invention is not limited thereto.
Drawings
Fig. 1 is a schematic structural diagram of an apparatus according to an embodiment of the present invention.
Wherein the reference numerals
1 multi-gear switch
2ECU
3 igniter
4 oil sprayer
5 spray pipe
6 gas controller
7 gas pressure sensor
Detailed Description
The following describes the structural and operational principles of the present invention in detail with reference to the accompanying drawings:
referring to fig. 1, fig. 1 is a schematic structural diagram of an apparatus according to an embodiment of the present invention. The utility model discloses a many fuel electricity of general small gasoline engine spouts controlling means, including fuel electricity system of spouting, including ECU2 and the some firearm 3 and sprayer 4 etc. of being connected with this ECU2, the device still includes gas control system, gas control system with fuel electricity system of spouting can structure as an organic whole, or gas control system with fuel electricity system of spouting can be split type structure and pass through the pipe connection, gas control system can independently realize independent gas electronic control. The gas control system is LPG (liquefied petroleum gas), NG (natural gas) or other types of gas control systems, comprises a gas controller 6, a gas pressure sensor 7 and a spray pipe 5, the gas controller 6 is connected with the ECU2 of the fuel electric injection system, the gas pressure sensor 7 is arranged in a gas channel of a general small-sized gasoline engine and is connected with the gas controller 6, the spray pipe 5 is connected with the fuel gas controller 6 and communicated with a throttle hole of a general small gasoline engine, the gas controller 6 adjusts the opening degree of the nozzle 5 to meet the gas flow rate required by the engine, the gas pressure sensor 7 collects working pressure data of gas and transmits the working pressure data to the gas controller 6 to automatically correct flow data, so that flow changes generated by different gas supply pressures are compensated, and stable operation of the engine is ensured.
In the present embodiment, the gas controller 6 is preferably a solenoid valve or a stepping motor. When the gas controller 6 is an electromagnetic valve, a set frequency or a frequency conversion mode is adopted, and the flow rate of the gas is adjusted by adjusting the opening time of the electromagnetic valve. When the gas controller 6 is a stepping motor, the ECU2 controls the step number of the stepping motor to adjust the opening of the nozzle 5 to control the flow rate of the gas. The device also comprises an oxygen sensor which is used for collecting oxygen content data of exhaust gas discharged by the engine and transmitting the oxygen content data to the ECU2, and the ECU2 corrects flow parameters according to the oxygen content data so as to ensure the air-fuel ratio of the normal operation of the engine.
The embodiment can also comprise a multi-gear switch 1 which is connected with the ECU2 of the fuel electronic injection system and used for sending an on-off signal to the ECU2 when the engine is switched from fuel to gas, and the ECU2 identifies the fuel state during operation and automatically switches flow data required by different fuels. The multi-gear switch 1 sends the on-off signal when the multi-gear switch is started at a low temperature, the ECU2 is started from a fuel oil mode by default, and after the multi-gear switch is started to work normally, the multi-gear switch is automatically switched to a fuel gas working mode.
The utility model discloses an in the embodiment, the engine is converted to the gas during operation from fuel, gas pressure sensor 7 gathers the gas pressure value, and according to whether the gas pressure value exceeds the pressure setting value and judges whether the gas switches on, the fuel state of ECU2 automatic identification during operation to the different flow data of automatic switch-over.
The utility model discloses a many fuel applications indicate fuel, gas, perhaps oil-gas mixture. During operation, the switch can be switched to the gas working mode manually: when the engine is started, the fuel mode is switched to by selecting the fuel transfer switch, the ECU2 switches the system into the fuel gas working mode after identifying the fuel gas mode, the ECU2 controls the electromagnetic valve or the stepping motor to provide the flow required by the engine during normal working, the working pressure of the fuel gas is collected by the fuel gas pressure sensor 7 to automatically correct the flow data, the oxygen sensor automatically corrects the flow parameters by collecting the oxygen content discharged by the tail gas of the engine to ensure that the engine runs in the proper air-fuel ratio range, and the engine can normally work.
The switch can also be switched manually into an automatically recognized operating mode: when the engine is started, the automatic identification working mode is switched to through the selection switch, when the gas pressure sensor 7 identifies that the gas pressure is larger than the pressure set value, such as KPa, the ECU2 identifies the gas working mode, the system is switched to the gas working mode, the electromagnetic valve or the stepping motor is controlled, and the flow required by the engine in normal working is provided. The working pressure of the fuel gas is collected through the fuel gas pressure sensor 7, flow data are corrected automatically, the oxygen sensor corrects flow parameters automatically by collecting the oxygen content discharged by the tail gas of the engine, and the engine is guaranteed to operate in a proper air-fuel ratio range, so that the engine works normally.
Or after the switch is switched to fuel oil to be started manually, the fuel oil automatically enters a fuel gas working mode: when the engine is started, the engine automatically enters a gas working mode after being switched to fuel oil starting through the multi-gear switch 1, the ECU2 defaults to firstly open the fuel oil supply mode, and when the engine is normally started, the engine automatically switches to the gas working mode to control the electromagnetic valve or the stepping motor so as to provide the flow required by the engine during normal working. The working pressure of fuel gas is collected through the fuel gas pressure sensor 7, flow data are corrected automatically, the oxygen content of exhaust gas of the engine is collected through the oxygen sensor, flow parameters are corrected automatically, the engine is guaranteed to operate in a proper air-fuel ratio range, the engine can work normally, and the engine can be started quickly at low temperature in the mode.
The utility model discloses utilize general small gasoline engine's fuel electronic control system, LPG (liquefied petroleum gas) of the same kind has been set up on the throttle valve hole passageway limit of throttle valve, NG (natural gas) or other types's gas control system, including solenoid valve or step motor, gas pressure sensor 7 has been set up in the gas passageway, wherein there is a spray tube 5 and leads to with the throttle valve hole, the ECU2 control solenoid valve or the step motor that make benefit of fuel electronic control system, and control the required gas flow size of engine through the size of solenoid valve or step motor 5 apertures of control spray tube, through gas pressure sensor 7, the flow variation that can the different gas air feed pressure of automatic compensation produce, guarantee engine job stabilization. The solenoid valve prefers the duty ratio solenoid valve, and through adjusting the live time under certain frequency, the live time is longer, and the gas gets into the flow that spray tube 5 is bigger, otherwise then diminishes. The stepping motor controls the height matched with the spray pipe 5 through adjusting the step number and the screw rod, when the opening degree is larger, the flow of the fuel gas is larger, otherwise, the flow is reduced. The fuel gas control system can be integrated with the fuel oil electric injection system or a split structure connected with the fuel oil electric injection system through a pipeline, and due to different structures of different engines, when the throttle valve assembly cannot be integrated, a fuel gas component can be arranged at a position outside the throttle valve assembly and connected through the pipeline.
When the engine is switched from fuel oil to gas for working, on-off signals of the external multi-gear switch 1 can be sent to the ECU2, the fuel state during working is identified, and flow data required by different fuels are automatically switched. The gears of the multi-gear switch 1 are connected with the ECU2 through lead wires, each gear corresponds to a set of calibration data, and the ECU2 can automatically recognize the fuel requirement to be converted through switch gear conversion. Since the working pressures of the liquefied gas and the natural gas are different, when the gas pressure sensor 7 recognizes the different pressures, the ECU2 automatically switches to the corresponding parameters, and the different parameters are stored in the memory at the time of engine calibration.
When the engine is switched from fuel oil to gas for working, the pressure of the gas can be acquired through the gas pressure sensor 7, whether the gas is connected or not is judged according to whether the gas pressure exceeds a pressure set value, the ECU2 automatically identifies the fuel state during working, and different flow data are automatically switched. Because the gas pressure before entering the spray pipe 5 has fluctuation or upper and lower limit deviation, the spray pipe 5 is opened at the same opening degree, the change of the pressure can cause the change of the gas flow, after the gas pressure sensor 7 is arranged, the ECU2 automatically controls the power-on time of the duty ratio electromagnetic valve or adjusts the step number of the stepping motor to change the stroke so as to meet the gas flow under the proper working condition by reading the pressure value of the gas.
When the engine is started at low temperature, the engine can be started from a fuel mode by default through on-off signals of the external multi-gear switch 1, and then automatically switched to a fuel gas working mode after the engine is started normally. When the electromagnetic valve is adopted to control the gas to work, a certain frequency or frequency conversion mode is adopted, and the flow of the gas is adjusted by adjusting the control mode of the opening time of the electromagnetic valve. When the stepping motor is adopted to control the gas to work, the ECU2 is used to control the step number of the stepping motor so as to control the opening degree of the matching surface with the spray pipe 5 and adjust the flow of the gas. After the fuel system is removed, LPG (liquefied petroleum gas), NG (natural gas) or other types of fuel gas control hardware can be used independently to become independent fuel gas electronic control, that is, only a fuel gas engine is used, and a fuel gas control part (including the fuel injector 4, the fuel pump and the like) is cancelled to become a fuel gas system.
The utility model discloses a multi-fuel is used on general small gasoline engine, has promoted the control accuracy of gas flow to can carry out the flow correction according to the size of gas pressure is automatic, owing to adopt solenoid valve or step motor's flow control mode, the electrical system of engine can make full use of gas carries out closed-loop control through oxygen sensor, makes the engine operation in the within range of ideal air-fuel ratio, plays energy saving and emission reduction's effect.
Naturally, the present invention can be embodied in many other forms without departing from the spirit or essential attributes thereof, and it should be understood that various changes and modifications can be made by one skilled in the art without departing from the spirit or essential attributes thereof, and it is intended that all such changes and modifications be considered as within the scope of the appended claims.
Claims (10)
1. The multi-fuel electronic injection control device of the general small gasoline engine comprises a fuel electronic injection system and is characterized by further comprising a fuel gas control system, wherein the fuel gas control system comprises a fuel gas controller, a fuel gas pressure sensor and a spray pipe, the fuel gas controller is connected with an ECU (electronic control unit) of the fuel electronic injection system, the fuel gas pressure sensor is installed in a fuel gas channel and connected with the fuel gas controller, the spray pipe is connected with the fuel gas controller and communicated with a throttle hole of the small gasoline engine, the fuel gas controller adjusts the opening degree of the spray pipe to meet the fuel gas flow required by the engine, and the fuel gas pressure sensor collects working pressure data of fuel gas and transmits the working pressure data to the fuel gas controller to automatically correct the flow data.
2. A multi-fuel electronic injection control device for a universal small gasoline engine as claimed in claim 1, wherein the gas controller is a solenoid valve or a stepping motor.
3. A multi-fuel electronic injection control device for a universal small gasoline engine as claimed in claim 2, wherein the gas controller is a solenoid valve, and adopts a set frequency or variable frequency mode, and adjusts the flow rate of the gas by adjusting the opening time of the solenoid valve.
4. A multi-fuel electronic injection control device for a universal small gasoline engine as claimed in claim 2, wherein the gas controller is a stepping motor, and the ECU controls the flow rate of the gas by controlling the step number of the stepping motor to adjust the opening degree of the nozzle.
5. The multi-fuel electronic injection control device of the universal small gasoline engine as claimed in claim 1, 2, 3 or 4, wherein the gas control system and the fuel electronic injection system are an integral structure, or the gas control system and the fuel electronic injection system are a separate structure and are connected through a pipeline.
6. The multi-fuel electronic injection control device of the universal small gasoline engine as claimed in claim 1, 2, 3 or 4, further comprising a multi-gear switch connected with the ECU of the fuel electronic injection system.
7. The multi-fuel electronic injection control device of the universal small gasoline engine as claimed in claim 6, wherein the multi-gear is used for sending an on-off signal to the ECU when the engine is started at a low temperature.
8. The multi-fuel electronic injection control device of the universal small gasoline engine as claimed in claim 1, 2, 3 or 4, wherein the gas pressure sensor collects a gas pressure value and judges whether the gas pressure value is greater than a pressure set value.
9. The multi-fuel electronic injection control device of the general small gasoline engine as claimed in claim 1, 2, 3 or 4, further comprising an oxygen sensor for collecting oxygen content data of exhaust gas of the engine and transmitting the oxygen content data to the ECU.
10. The multi-fuel electronic injection control device of the universal small gasoline engine as claimed in claim 1, 2, 3 or 4, wherein the gas control system independently realizes independent gas electronic control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220773585.0U CN217107237U (en) | 2022-04-01 | 2022-04-01 | Multi-fuel electric spraying control device of universal small gasoline engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220773585.0U CN217107237U (en) | 2022-04-01 | 2022-04-01 | Multi-fuel electric spraying control device of universal small gasoline engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217107237U true CN217107237U (en) | 2022-08-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220773585.0U Active CN217107237U (en) | 2022-04-01 | 2022-04-01 | Multi-fuel electric spraying control device of universal small gasoline engine |
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| CN (1) | CN217107237U (en) |
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2022
- 2022-04-01 CN CN202220773585.0U patent/CN217107237U/en active Active
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