Fuel gas-fuel oil automatic switching system

Abstract

A fuel gas-fuel oil automatic switching system, comprising an electronic injection valve (1), a fuel gas control valve (2) and an engine (3); the electronic injection valve (1) is mounted on the engine (3), and the electronic injection valve (1) comprises a valve body (11), an electronic controller (12) and a fuel oil injection nozzle (13), the electronic controller (12) and the fuel oil injection nozzle (13) being arranged on the valve body (11), and the fuel oil injection nozzle (13) supplying oil to the engine (3); the fuel gas control valve (2) is communicated with the engine (3) via a pipe and supplies gas to the engine (3); the fuel gas control valve (2) is provided with a pressure sensor (21), the pressure sensor (21) being electrically connected to the electronic controller (12); the pressure sensor (21) measures the fuel gas pressure and transmitting a fuel gas pressure signal to the electronic controller (12); the electronic controller (12) automatically controls the opening and closing of the fuel gas control valve (2) and the electronic injection valve (1) on the basis of the fuel gas pressure signal. The system is used for improving the intelligence and convenience of fuel gas and fuel oil switching.

Description

Gas-oil automatic switching system

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] The present application claims priority to the Chinese patent application No. 202421667635.2, filed on July 15, 2024, and entitled "Gas-oil automatic switching system", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0003] The present application relates to the technical field of fuel systems, in particular to a gas-oil automatic switching system. BACKGROUND

[0004] With the increasing use of three fuels, i.e. gasoline, LPG and NG, on the engine, gas fuel is more economical and environmentally friendly than gasoline, so we usually consider burning gas fuel first in the use process. However, the current selection and use of different fuels still usually adopt a manual selection method, which is not easy to realize automatic switching of fuel, and requires stopping the engine to replace the fuel type, which is not good in intelligence and convenience.

[0005] SUMMARY

[0006] In order to improve the intelligence and convenience of gas and oil switching, the present application provides a gas-oil automatic switching system.

[0007] The gas-oil automatic switching system provided by the present application adopts the following technical solution:

[0008] A gas-oil automatic switching system, comprising an electronic injection valve, a gas control valve and an engine;

[0009] The electronic injection valve is installed on the engine, and the electronic injection valve comprises a valve body, an electronic controller and a fuel injection nozzle, the electronic controller and the fuel injection nozzle are arranged on the valve body, and the fuel injection nozzle is configured to supply oil to the engine;

[0010] The gas control valve is communicated with the engine through a pipeline and is configured to supply gas to the engine, a pressure sensor is arranged on the gas control valve, the pressure sensor is electrically connected with the electronic controller, the pressure sensor is configured to detect the gas pressure and transmit the gas pressure signal to the electronic controller, and the electronic controller is configured to automatically control the opening and closing of the gas control valve and the electronic injection valve according to the gas pressure signal.

[0011] By adopting the above technical solution:

[0012] When the engine is not started:

[0013] When no gas fuel is accessed, the pressure sensor does not detect pressure, and the electronic controller executes the fuel burning program; the engine is started, the intake port of the engine generates negative pressure, fresh air enters, gasoline fuel is sprayed through the fuel nozzle to mix with air and enter the combustion chamber, and the engine operates normally.

[0014] When gas fuel is accessed, the pressure sensor detects pressure and sends a signal to the electronic controller, and the electronic controller executes the gas burning program; the engine is started, the intake port generates negative pressure, fresh air enters, gas fuel is sprayed through the gas control valve to mix with air and enter the combustion chamber, and the engine operates normally.

[0015] When the engine is started and operates:

[0016] When the engine operates using gas fuel, the electronic controller executes the gas burning program; when the pressure sensor detects that the fuel pressure value is less than the set pressure value, the electronic controller quickly makes a judgment and executes the fuel burning program, the gas control valve stops working, fuel fuel is sprayed through the fuel nozzle to mix with air and enter the combustion chamber, and the engine operates normally.

[0017] When the engine operates using fuel fuel, the electronic controller executes the fuel burning program; when gas fuel is suddenly accessed, the pressure sensor detects that the gas pressure is greater than the set value, the electronic controller quickly makes a judgment and executes the gas burning program, the fuel nozzle stops working, and gas fuel is sprayed through the gas control valve to mix with air and enter the combustion chamber, and the engine operates normally.

[0018] The entire gas-fuel switching system does not need human control and realizes automatic switching, which helps to improve the intelligence and convenience of gas and fuel switching. And through the control of the electronic controller, the burning program and the execution component accurately execute their respective instructions, so that the engine reaches a better combustion state, has better performance, is more economical and environmentally friendly.

[0019] Optionally, it also includes a fuel switch, the gas switch includes an LPG gear and a CNG gear, and the fuel switch is electrically connected with the gas control valve and is configured to control the type of gas accessed.

[0020] Through the above technical scheme, when different gas needs to be used, the corresponding selection is made through the gas switch, the LPG gear is rotated when LPG is used, and the CNG gear is rotated when CNG is used, so that the selection of different gas is realized.

[0021] Optionally, the engine includes a body and an air filter arranged on the body, a space between the air filter and the body is an installation space, the electronic injection valve is arranged at the installation space, and the two sides of the electronic injection valve are in communication with the air filter and the body, respectively.

[0022] By adopting the technical scheme, fresh air entering the generator can be filtered by the air filter first, so as to reduce impurities entering the engine and further reduce the possibility of engine damage.

[0023] Optionally, the air filter comprises a detachable shell and a mounting frame arranged in the shell, and the mounting frame is provided with a filter sponge.

[0024] By adopting the technical scheme, the filter part is simple in structure and convenient to install, and the shell can be detached for filter sponge replacement operation, thereby improving long-term filtering effect.

[0025] Optionally, the bottom of the machine body is provided with a heat dissipation frame, a plurality of heat dissipation ribs are fixedly connected in the heat dissipation frame, the plurality of heat dissipation ribs are arranged in a spaced manner to form a plurality of heat dissipation channels, and the heat dissipation channels are in communication with the inside of the machine body.

[0026] Optionally, the plurality of heat dissipation ribs are arranged outwardly from the middle of the mounting frame to both ends.

[0027] By adopting the technical scheme, the heat dissipation channels help heat dissipation of the engine, and the plurality of heat dissipation ribs are arranged outwardly from the middle of the mounting frame to both ends, so that the heat dissipation effect is improved.

[0028] In summary, the present application has at least one of the following beneficial technical effects:

[0029] 1. The entire gas-oil switching system does not need human control, realizes automatic switching, helps improve the intelligence and convenience of gas and oil switching, and through control of the electronic controller, the combustion program and the execution component accurately execute respective instructions, so that the engine reaches a better combustion state, has better performance, is more economical and environmentally friendly.

[0030] 2. When different gases need to be used, the corresponding selection is performed through the gas switch, the LPG gear is rotated when LPG is used, and the CNG gear is rotated when CNG is used, so that the selection of different gases is realized. BRIEF DESCRIPTION OF DRAWINGS

[0031] FIG. 1 is a schematic diagram of the overall structure of a gas-oil automatic switching system according to an embodiment of the present application.

[0032] FIG. 2 is a schematic diagram of a structure configured to show a mounting frame according to an embodiment of the present application.

[0033] FIG. 3 is a schematic diagram of a structure configured to show a heat dissipation rib according to an embodiment of the present application.

[0034] Explanation of reference signs: 1, electronic injection valve; 11, valve body; 12, electronic controller; 13, fuel nozzle; 2, gas control valve; 21, pressure sensor; 3, engine; 31, engine body; 32, air filter; 4, installation space; 5, shell; 6, installation frame; 7, heat dissipation frame; 8, heat dissipation rib. DETAILED DESCRIPTION

[0035] The application will be further described in detail below in combination with Figs. 1-3.

[0036] The application discloses a gas-oil automatic switching system. Referring to Fig. 1, the gas-oil automatic switching system comprises an electronic injection valve 1, a gas control valve 2, an engine 3 and a gas switch. The electronic injection valve 1 is installed on the engine 3 and comprises a valve body 11, an electronic controller 12 and a fuel nozzle 13, the electronic controller 12 and the fuel nozzle 13 are arranged on the valve body 11, and the fuel nozzle 13 is configured to supply oil for the engine 3.

[0037] Referring to the figure, the gas control valve 2 is configured to supply gas for the engine 3 by communicating with the engine 3 through a pipeline, a pressure sensor 21 is arranged on the gas control valve 2, the pressure sensor 21 is electrically connected with the electronic controller 12, the pressure sensor 21 is configured to detect the gas pressure and transmit the gas pressure signal to the electronic controller 12, and the electronic controller 12 is configured to automatically control the opening and closing of the gas control valve 2 and the electronic injection valve 1 according to the gas pressure signal. The gas switch is not shown in the drawings of the application, and can be set and connected according to the actual situation. The gas switch comprises an LPG gear and a CNG gear, and the fuel switch is electrically connected with the gas control valve 2 and is configured to control the type of gas entering. When different gases are needed, the corresponding selection is made through the gas switch, the LPG gear is rotated when LPG is used, and the CNG gear is rotated when CNG is used, so that the selection of different gases is realized.

[0038] Referring to Figs. 1-2, the engine 3 comprises an engine body 31 and an air filter 32 arranged on the engine body 31, the space between the air filter 32 and the engine body 31 is an installation space 4, the electronic injection valve 1 is arranged at the installation space 4, and the two sides of the electronic injection valve 1 respectively communicate with the air filter 32 and the engine body 31. Fresh air entering the generator can be filtered by the air filter 32 first, reducing impurities entering the engine 3, thereby reducing the possibility of damage to the engine 3. The air filter 32 comprises a shell 5 and an installation frame 6 arranged in the shell 5, the shell 5 is divided into two parts connected by bolts, so that the shell 5 can be disassembled. The installation frame 6 is provided with filter sponge, which is not shown in the drawings of the application and can be installed according to the actual situation. The filter part is simple in structure and convenient to install, and the shell 5 can be disassembled for filter sponge replacement operation, improving long-term filtering effect.

[0039] Referring to FIG. 3, the bottom of the engine body 31 is provided with a heat dissipation frame 7, and a plurality of heat dissipation ribs 8 are fixedly connected in the heat dissipation frame 7. The plurality of heat dissipation ribs 8 are arranged at intervals to form a plurality of heat dissipation channels, and the heat dissipation channels are in communication with the inside of the engine body 31. The plurality of heat dissipation ribs 8 are arranged outwardly from the middle of the mounting frame 6 to both ends. The heat dissipation channels help the heat dissipation of the engine 3, and the plurality of heat dissipation ribs 8 arranged outwardly from the middle of the mounting frame 6 to both ends can improve the heat dissipation effect.

[0040] The implementation principle of the gas-oil automatic switching system according to an embodiment of the present application is as follows:

[0041] When the engine 3 is not started:

[0042] When no gas fuel is connected, the pressure sensor 21 does not detect pressure, and the electronic controller 12 executes the oil combustion program; the engine 3 is started, the intake port of the engine 3 generates negative pressure, fresh air enters through the air filter 32, gasoline fuel is sprayed out through the fuel nozzle 13 and mixed with air to enter the combustion chamber, and the engine 3 operates normally.

[0043] When gas fuel is connected, the pressure sensor 21 detects pressure and sends a signal to the electronic controller 12, and the electronic controller 12 executes the gas combustion program; the engine 3 is started, the intake port generates negative pressure, fresh air enters through the air filter 32, gas fuel is sprayed out through the gas control valve 2 and mixed with air to enter the combustion chamber, and the engine 3 operates normally.

[0044] When the engine 3 is started and operates:

[0045] When the engine 3 operates using gas fuel, the electronic controller 12 executes the gas combustion program; when the gas fuel is suddenly used up or interrupted, and the pressure sensor 21 detects that the fuel pressure value is less than the set pressure value, the electronic controller 12 quickly makes a judgment and executes the oil combustion program, the gas control valve 2 stops working, the oil fuel is sprayed out through the fuel nozzle 13 and mixed with air to enter the combustion chamber, and the engine 3 operates normally.

[0046] When the engine 3 operates using oil fuel, the electronic controller 12 executes the oil combustion program; when gas fuel is suddenly connected, the pressure sensor 21 detects that the gas pressure is greater than the set value, the electronic controller 12 quickly makes a judgment and executes the gas combustion program, the fuel nozzle 13 stops working, the gas fuel is sprayed out through the gas control valve 2 and mixed with air to enter the combustion chamber, and the engine 3 operates normally.

[0047] The entire gas-oil switching system does not need to be controlled by humans, and automatic switching is achieved, which helps to improve the intelligence and convenience of gas and oil switching. And through the control of the electronic controller 12, the combustion program and the execution component accurately execute their respective instructions, so that the engine 3 reaches a better combustion state, has better performance, and is more economical and environmentally friendly.

[0048] The above are preferred embodiments of the present application, and do not limit the protection scope of the present application, so: all equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application. Industrial applicability

[0049] The gas-oil switching system of the present application does not need artificial control, realizes automatic switching, helps to improve the intelligence and convenience of gas and oil switching; and through the control of the electronic controller, the combustion program and the execution component accurately execute their respective instructions, so that the engine reaches a better combustion state, has better performance, is more economical and environmentally friendly.

Claims

1. A gas-oil automatic switchover system, characterized by: It comprises an electronic injection valve (1), a gas control valve (2) and an engine (3). The electronic injection valve (1) is installed on the engine (3), and comprises a valve body (11), an electronic controller (12) and a fuel nozzle (13), wherein the electronic controller (12) and the fuel nozzle (13) are arranged on the valve body (11), and the fuel nozzle (13) is configured to supply oil to the engine (3). The gas control valve (2) is communicated with the engine (3) through a pipeline and is configured to supply gas to the engine (3), and a pressure sensor (21) is arranged on the gas control valve (2), the pressure sensor (21) is electrically connected with the electronic controller (12), the pressure sensor (21) is configured to detect the gas pressure and transmit the gas pressure signal to the electronic controller (12), and the electronic controller (12) is configured to automatically control the opening and closing of the gas control valve (2) and the electronic injection valve (1) according to the gas pressure signal.

2. A gas-oil automatic switchover system according to claim 1, characterized in that: It also comprises a fuel switch, which comprises an LPG gear and a CNG gear, and the fuel switch is electrically connected with the gas control valve (2) and is configured to control the type of gas entering.

3. A gas-oil automatic switchover system according to claim 1 or 2, characterized in that: The engine (3) comprises a body (31) and an air filter (32) arranged on the body (31), and the space between the air filter (32) and the body (31) is an installation space (4), the electronic injection valve (1) is arranged at the installation space (4), and the two sides of the electronic injection valve (1) are respectively communicated with the air filter (32) and the body (31).

4. A gas-oil automatic switchover system according to claim 3, characterized in that: The air filter (32) comprises a detachable shell (5) and a mounting frame (6) arranged in the shell (5), and a filter sponge is arranged in the mounting frame (6).

5. A gas-oil automatic switchover system according to claim 1 or 2, characterized in that: The bottom of the body (31) is provided with a heat dissipation frame (7), a plurality of heat dissipation ribs (8) are fixedly connected in the heat dissipation frame (7), the plurality of heat dissipation ribs (8) are arranged in a spaced manner to form a plurality of heat dissipation channels, and the heat dissipation channels are communicated with the inside of the body (31).

6. A gas-oil automatic switchover system according to claim 5, characterized in that: The plurality of heat dissipation ribs (8) are arranged in an outward expansion manner from the middle part of the mounting frame (6) to both ends.

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