Gas power-free hand-pull control system applicable to general gasoline engine

Abstract

The utility model relates to the technical field of fuel gas systems, in particular to a general gasoline engine applicable fuel gas power-free hand-pull control system which comprises a fuel gas control part, a fuel oil control part and a general gasoline engine, and the fuel gas control part comprises a CNG gas cylinder, an LPG gas cylinder, a first-stage pressure reducing valve I, a first-stage pressure reducing valve II, a fuel gas electromagnetic valve and a power module; the power supply module is connected with a power generation part of the general gasoline engine and the gas electromagnetic valve at the same time; the fuel oil control part comprises a fuel oil tank and a fuel oil control piece which are connected with each other, the fuel oil control piece is connected with the gas electromagnetic valve and the general gasoline engine at the same time, and gas can enter the general gasoline engine from the gas electromagnetic valve through the fuel oil control piece. The method has the effect that the general gasoline engine can be started by hand pulling when gas such as LPG (liquefied petroleum gas) or CNG (compressed natural gas) is used as fuel under the conditions that the storage battery is low in electric quantity, damaged or even unavailable.

Description

Technical Field

[0001] The present application relates to the technical field of gas systems, and in particular to a gas-fired non-electrical hand-pull control system applicable to general machines. Background Art

[0002] With the increasing use of three fuels (gasoline, LPG, and NG) in general-purpose gasoline engines (hereinafter referred to as "general-purpose engines"), gas fuels are more economical and environmentally friendly than gasoline. When fuel is unavailable, LPG, CNG, and other gases are often used as fuel. For safety reasons, general-purpose engine designs must incorporate a solenoid valve in the gas pipeline to prevent gas leakage during shutdown. However, the opening and closing of the solenoid valve requires an external power source, typically a battery. If the battery is low or even damaged, the solenoid valve will not open, cutting off fuel from entering the intake duct and preventing the general-purpose engine from starting. Utility Model Content

[0003] In order to enable the general machine to be manually started when using LPG, CNG or other gases as fuel when the battery is low, damaged or even not available, the present application provides a gas-fired, non-electric manual control system suitable for general machines.

[0004] The present application provides a gas-fired non-electric manual control system applicable to general machines, which adopts the following technical solutions:

[0005] A non-electric hand-pull control system for gas suitable for general-purpose machines, comprising a gas control unit, a fuel control unit, and a general-purpose machine. The gas control unit comprises a CNG cylinder, an LPG cylinder, a first-stage pressure reducing valve, a second-stage pressure reducing valve, a gas solenoid valve, and a power module. The two sides of the first-stage pressure reducing valve are respectively connected to the CNG cylinder and the first-stage pressure reducing valve, the LPG is connected to the first-stage pressure reducing valve, and the first-stage pressure reducing valve is also connected to the gas solenoid valve.

[0006] The general machine is a hand-start generator, and the power module is connected to the power generation part and the gas solenoid valve of the general machine at the same time;

[0007] The fuel control unit includes a fuel tank and a fuel control component that are connected to each other. The fuel control component is connected to the gas solenoid valve and the general machine at the same time. Gas can enter the general machine from the gas solenoid valve through the fuel control component.

[0008] By adopting the above technical solution, a hand-starting system can be used even when the battery is low, damaged, or even absent. The system uses a hand-starting generator, which is currently available and can be selected based on actual circumstances. The charging coil or permanent magnet motor windings in the generator section of the system cut through magnetic flux lines to generate electricity. This electricity is processed by the power module and then supplied to the gas solenoid valve and the entire system, energizing the gas solenoid valve and opening it. At this point, due to the negative pressure in the system's intake duct, the gas flows through the gas control unit, the gas solenoid valve, and the fuel control unit, entering the system's intake duct. There, it mixes with air and enters the system, igniting and enabling normal operation. This allows the system to be hand-started even when the battery is low, damaged, or absent, even when using LPG or CNG as fuel. This eliminates the need to start with gasoline and then convert to another fuel. The system can be used when only one of these fuels is available, or when no battery is present.

[0009] Optionally, the gas solenoid valve includes a solenoid valve body, a solenoid valve I, a solenoid valve II, an air inlet pipe and an air outlet pipe, wherein the solenoid valve I and the solenoid valve II are arranged in parallel on the top of the solenoid valve body, the air inlet pipe is arranged on the side of the solenoid valve body, and the air outlet pipe is arranged at the bottom of the solenoid valve body;

[0010] The solenoid valve body is provided with a first channel, a second channel, a first vertical pipe and a second vertical pipe in a well-shaped manner. The bottom end of the first vertical pipe passes through the second channel and is connected to the second channel. The top end of the first vertical pipe passes through the first channel and is blocked or opened by the solenoid valve I.

[0011] The bottom end of the second vertical pipe passes through the second channel and is connected to the second channel, and the top end of the second vertical pipe passes through the first channel and is blocked or opened by the solenoid valve II;

[0012] The air inlet pipe is connected to the middle of the first channel, the air inlet pipe is connected to the middle of the second channel, the distances from the air inlet pipe to the first vertical pipe and the second vertical pipe are equal, and the distances from the air outlet pipe to the first vertical pipe and the second vertical pipe are also equal.

[0013] By adopting the above technical solution, the technical parameters of the solenoid valve I and solenoid valve II assembled on the solenoid valve body can be the same product, and the interfaces can be interchanged when connecting the wiring harness. In this application, two solenoid valves are assembled, namely solenoid valve I and solenoid valve II, and the path of gas passing through the solenoid valve body is the same.

[0014] When using gasoline as fuel:

[0015] When the engine is started, negative pressure is generated in the air intake duct of the engine, and the fuel enters the fuel control component through the fuel tank. Fresh air and gasoline are mixed into the engine and ignite and burn, and the engine runs normally.

[0016] When gasoline is insufficient or not used as fuel, LPG can be used as fuel. Any solenoid valve can be used, and the solenoid valve can be selected according to the wiring situation. The gas enters through the intake pipe. The electronic fuel injection system used in conjunction with the solenoid valve of this application controls the pulse width of the opening of solenoid valve I and solenoid valve II to control the intake amount of gas to match different loads. The gas then enters the intake duct through the outlet pipe for combustion. Regardless of whether solenoid valve I or solenoid valve II is selected, the gas path is the same.

[0017] When CNG is used as fuel, solenoid valve I or solenoid valve II works at the same time, and the gas enters through the intake pipe. The electronic fuel injection system used in conjunction with the solenoid valve of this application controls the pulse width of the opening of solenoid valve I and solenoid valve II to control the intake amount of gas to match different loads, and then enters the connected intake duct through the outlet pipe for combustion; the gas passes through solenoid valve I and solenoid valve II in the same route, with better uniformity, and the consistency of emissions and performance is guaranteed.

[0018] The design of an air outlet makes the gas pipeline of the whole machine more concise and the structure simpler. At the same time, it reduces the number of gas pipeline joints, directly reducing the risk of joint leakage and providing higher safety.

[0019] Through the newly designed structure of the gas solenoid valve, the uniform and symmetrical structural design of the intake pipe, solenoid valve I, solenoid valve II and the outlet pipe, the path of each fuel and each pipeline gas is the same, which can improve the consistency of gas emissions and performance, meet strict emission requirements, better control combustion quality, reduce the emission of harmful substances, and improve fuel economy.

[0020] Optionally, the gas solenoid valve further includes a pressure sensor, and the pressure sensor is communicated with the end of the first channel;

[0021] The fuel control component includes a valve body, an electronic controller and a fuel nozzle. The electronic controller is electrically connected to a pressure sensor. The pressure sensor is used to detect the gas pressure and transmit the gas pressure signal to the electronic controller. The electronic controller is used to automatically control the opening size of the valve body according to the gas pressure signal, as well as the opening size of the solenoid valve I and the solenoid valve II.

[0022] By adopting the above technical solution, the pressure sensor can sense the pressure of the gas in the pipeline and electrically connect and cooperate with the electronic controller of the EFI system to control the pulse width of the opening of solenoid valves I and II and the valve body based on the actual pressure value. The electronic controller can be connected and configured according to actual conditions, and its specific control process is conventional.

[0023] Optionally, the first channel and the second channel are each vertically connected with two connecting pipes, and the first vertical pipe and the second vertical pipe are respectively inserted into the corresponding connecting pipes; the end of the first channel, the end of the second channel and the bottom of the connecting pipe on the second channel are all provided with plugs.

[0024] By adopting the above technical solution, the provision of the connecting pipe facilitates the installation of the first vertical pipe and the second vertical pipe, while the plug can reduce the risk of air leakage.

[0025] Optionally, a first mounting hole and a second mounting hole are provided on the top surface of the solenoid valve body, the first mounting hole is connected to the top of the first vertical pipe, and the second mounting hole is connected to the top of the second vertical pipe, the solenoid valve I is threadedly connected to the first mounting hole, and the solenoid valve II is threadedly connected to the second mounting hole.

[0026] By adopting the above technical solution, the installation of the solenoid valve I and the solenoid valve II is facilitated.

[0027] Optionally, the gas control unit further includes pipeline natural gas, which is connected between the first-level pressure reducing valve No. 2 and the gas control component.

[0028] By adopting the above technical solution, in addition to LPG and CNG, natural gas can also be used, which increases the types of gas fuels and improves the diversity of fuel options, making it more economical and environmentally friendly.

[0029] In summary, this application has at least the following beneficial technical effects:

[0030] In the event of a low, damaged, or even missing battery, the engine can be manually started. This engine uses a manual starter generator, a conventional technology that can be selected based on practical needs. The charging coil or permanent magnet motor windings in the engine's generator section cut through magnetic flux lines, generating electricity. This energy is processed by the power module and then supplied to the gas solenoid valve and the entire system, energizing the gas solenoid valve and opening it. At this point, due to negative pressure in the engine's intake duct, the gas flows through the gas control unit, the gas solenoid valve, and the fuel control unit, entering the engine's intake duct. Mixed with air, it enters the engine and ignites, allowing the engine to operate normally. This allows the engine to be manually started even when the battery is low, damaged, or missing, even when using LPG or CNG as fuel. This eliminates the need to start with gasoline and then convert to another fuel. This system can be used with either fuel type or when no battery is present. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic diagram of the overall structure of a gas-fired, non-electric, hand-operated control system applicable to all machines in an embodiment of the present application.

[0032] Figure 2It is a structural schematic diagram used to illustrate the gas solenoid valve in the embodiment of the present application.

[0033] Figure 3 It is a schematic diagram of the structure of the gas solenoid valve used to illustrate the interior of the gas solenoid valve in the embodiment of the present application.

[0034] Explanation of the accompanying symbols: 1. Gas control unit; 11. CNG cylinder; 12. LPG cylinder; 13. First-stage pressure reducing valve No. 1; 14. First-stage pressure reducing valve No. 2; 15. Pipeline natural gas; 2. Fuel control unit; 21. Fuel tank; 3. General machine; 31. Power module; 4. Gas solenoid valve; 41. Solenoid valve I; 42. Solenoid valve II; 43. Outlet pipe; 44. Inlet pipe; 45. Connecting pipe; 5. Solenoid valve body; 51. First channel; 52. Second channel; 53. First vertical pipe; 54. Second vertical pipe; 55. First mounting hole; 56. Second mounting hole; 57. Third mounting hole; 6. Pressure sensor; 7. Valve body; 71. Electronic controller; 72. Fuel nozzle DETAILED DESCRIPTION

[0035] The following is combined with Figure 1-3 This application is described in further detail.

[0036] The embodiment of the present application discloses a gas-fired non-electric hand-pull control system applicable to all machines. Figure 1 The gas-fired hand-operated control system suitable for general machines includes a gas control unit 1, a fuel control unit 2 and a general machine 3. The gas control unit 1 includes a CNG cylinder 11, an LPG cylinder 12, a first-level pressure reducing valve No. 13, a first-level pressure reducing valve No. 2 14, a gas solenoid valve 4 and a power module 31. The two sides of the first-level pressure reducing valve No. 13 are respectively connected to the CNG cylinder 11 and the first-level pressure reducing valve No. 2 14, the LPG is connected to the first-level pressure reducing valve No. 2 14, and the first-level pressure reducing valve No. 2 14 is also connected to the gas solenoid valve 4.

[0037] The general machine 3 is a hand-start generator. The power module 31 is connected to both the generator section and the gas solenoid valve 4. The fuel control unit 2 comprises a fuel tank 21 and a fuel control unit connected to each other. The fuel control unit is connected to both the gas solenoid valve 4 and the general machine 3, allowing gas to enter the general machine 3 through the fuel control unit from the gas solenoid valve 4. The gas control unit 1 also includes pipeline natural gas 15, which is connected between the first-stage pressure reducing valve 14 and the gas control unit. In addition to LPG and CNG fuel options, natural gas can also be used, expanding the variety of gas fuels and increasing fuel diversity, thereby achieving greater economic and environmental benefits.

[0038] In the event of a low battery, damage, or even no battery, the motor 3 can be manually started. This motor 3 is a manual starter generator, a conventional technology that can be selected based on practical needs. The charging coil or permanent magnet motor windings in the generator section of the motor 3 cut through magnetic flux lines, generating electricity. After processing by the power module 31, the electricity is supplied to the gas solenoid valve 4 and the entire system, causing the gas solenoid valve 4 to energize and open. At this point, due to the negative pressure in the motor 3's intake duct, the gas passes through the gas control unit 1, the gas solenoid valve 4, and the fuel control unit 2, entering the motor 3's intake duct. Mixed with air, it enters the motor 3 and ignites, allowing the motor 3 to operate normally. This allows the motor 3 to be manually started even when the battery is low, damaged, or even missing, using LPG or CNG as fuel. This eliminates the need to start with gasoline and then convert to another fuel. This system can be used when only one of these fuels is available, or when no battery is present.

[0039] Reference Figure 1-3 The gas solenoid valve 4 includes a solenoid valve body 5, a solenoid valve I 41, a solenoid valve II 42, an air inlet pipe 44, and an air outlet pipe 43. The solenoid valve I 41 and the solenoid valve II 42 are arranged side by side at the top of the solenoid valve body 5, the air inlet pipe 44 is arranged on the side of the solenoid valve body 5, and the air outlet pipe 43 is arranged at the bottom of the solenoid valve body 5. A first channel 51, a second channel 52, a first vertical pipe 53, and a second vertical pipe 54 are arranged in a cross shape in the solenoid valve body 5. The bottom end of the first vertical pipe 53 passes through the second channel 52 and is connected to the second channel 52. The top end of the first vertical pipe 53 passes through the first channel 51 and is blocked or opened by the solenoid valve I 41.

[0040] The bottom end of second riser pipe 54 passes through and communicates with second passage 52. The top end of second riser pipe 54 passes through first passage 51 and is blocked or opened by solenoid valve II 42. Inlet pipe 44 communicates with the middle of first passage 51, and inlet pipe 44 communicates with the middle of second passage 52. The distances from inlet pipe 44 to first riser pipe 53 and second riser pipe 54 are equal, and the distances from outlet pipe 43 to first riser pipe 53 and second riser pipe 54 are also equal.

[0041] The solenoid valve I 41 and solenoid valve II 42 mounted on the solenoid valve body 5 may have the same technical parameters and may have interchangeable interfaces when connecting the wiring harness. In this application, two solenoid valves, namely, solenoid valve I 41 and solenoid valve II 42, are mounted, and the gas passes through the same path within the solenoid valve body 5.

[0042] When LPG is used as fuel, any one of the solenoid valves is activated, and the solenoid valve can be selected according to the wiring conditions. The gas enters through the intake pipe 44. The electronic fuel injection system used in conjunction with the solenoid valve of the present application controls the pulse width of the opening of the solenoid valve I 41 and the solenoid valve II 42 to control the intake amount of the gas to match different loads. The gas then enters the connected intake duct through the outlet pipe 43 for combustion. Regardless of whether the solenoid valve I 41 or the solenoid valve II 42 is selected, the gas path is the same.

[0043] When CNG is used as fuel, solenoid valve I 41 or solenoid valve II 42 works at the same time, and the gas enters through the intake pipe 44. The electronic fuel injection system used in conjunction with the solenoid valve of this application controls the pulse width of the opening of solenoid valve I 41 and solenoid valve II 42 to control the intake amount of gas to match different loads, and then enters the connected intake duct through the outlet pipe 43 for combustion; the gas passes through the solenoid valve I 41 and the solenoid valve II 42 in the same route, with better uniformity, and the consistency of emissions and performance is guaranteed.

[0044] The design of an air outlet makes the gas pipeline of the whole machine more concise and the structure simpler. At the same time, it reduces the number of gas pipeline joints, directly reducing the risk of joint leakage and providing higher safety.

[0045] By completely redesigning the structure of the gas solenoid valve 4, the intake pipe 44, solenoid valve I 41, solenoid valve II 42 and the outlet pipe 43 are designed to be evenly symmetrical, so that the paths of each fuel and each pipeline gas are the same, which can improve the consistency of gas emissions and performance, meet strict emission requirements, better control combustion quality, reduce the emission of harmful substances, and improve fuel economy.

[0046] Reference Figure 1-3 The gas solenoid valve 4 also includes a pressure sensor 6, which is connected to the end of the first channel 51. The fuel control component includes a valve body 7, an electronic controller 71, and a fuel nozzle 72. The electronic controller 71 is electrically connected to the pressure sensor 6. The pressure sensor 6 is used to detect the gas pressure and transmit the gas pressure signal to the electronic controller 71. The electronic controller 71 is used to automatically control the opening of the valve body 7, as well as the opening of the solenoid valve I 41 and the solenoid valve II 42, based on the gas pressure signal. The pressure sensor 6 can sense the pressure of the gas in the pipeline and is electrically connected and cooperates with the electronic controller 71 of the electronic fuel injection system to control the pulse width of the opening of the solenoid valve I 41, the solenoid valve II 42, and the valve body 7 according to the actual pressure value. The electronic controller 71 can be connected and configured according to actual conditions, and its specific control process is conventional.

[0047] Reference Figure 3Two connecting pipes 45 are vertically connected to each of the first and second channels 51, 52. A first vertical pipe 53 and a second vertical pipe 54 are respectively inserted into the corresponding connecting pipes 45. Plugs are provided at the ends of the first channel 51, the end of the second channel 52, and the bottom of the connecting pipes 45 on the second channel 52. The provision of the connecting pipes 45 facilitates the installation of the first and second vertical pipes 53, 54, and the plugs reduce the risk of air leakage.

[0048] Reference Figure 3 A first mounting hole 55 and a second mounting hole 56 are provided on the top surface of the solenoid valve body 5. The first mounting hole 55 is connected to the top of the first vertical pipe 53, and the second mounting hole 56 is connected to the top of the second vertical pipe 54. The solenoid valve I 41 is threadedly connected to the first mounting hole 55, and the solenoid valve II 42 is threadedly connected to the second mounting hole 56, which facilitates the installation of the solenoid valve I 41 and the solenoid valve II 42.

[0049] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A gas-fired, non-electric, hand-operated control system applicable to all machines, characterized by: The invention comprises a gas control unit (1), a fuel control unit (2) and a general machine (3); the gas control unit (1) comprises a CNG gas cylinder (11), an LPG gas cylinder (12), a first-stage pressure reducing valve No. 1 (13), a first-stage pressure reducing valve No. 2 (14), a gas solenoid valve (4) and a power module (31); both sides of the first-stage pressure reducing valve No. 1 (13) are respectively connected to the CNG gas cylinder (11) and the first-stage pressure reducing valve No. 2 (14); the LPG is connected to the first-stage pressure reducing valve No. 2 (14); and the first-stage pressure reducing valve No. 2 (14) is also connected to the gas solenoid valve (4); The general machine (3) is a hand-start type generator, and the power module (31) is connected to the power generation part and the gas solenoid valve (4) of the general machine (3); The fuel control unit (2) comprises a fuel tank (21) and a fuel control component which are connected to each other. The fuel control component is connected to the gas solenoid valve (4) and the gas generator (3) at the same time. Gas can enter the gas generator (3) from the gas solenoid valve (4) through the fuel control component.

2. A gas-fired non-electric manual control system applicable to all machines according to claim 1, characterized in that: The gas solenoid valve (4) comprises a solenoid valve body (5), a solenoid valve I (41), a solenoid valve II (42), an air inlet pipe (44) and an air outlet pipe (43), wherein the solenoid valve I (41) and the solenoid valve II (42) are arranged in parallel at the top of the solenoid valve body (5), the air inlet pipe (44) is arranged on the side of the solenoid valve body (5), and the air outlet pipe (43) is arranged at the bottom of the solenoid valve body (5); The solenoid valve body (5) is provided with a first channel (51), a second channel (52), a first vertical pipe (53) and a second vertical pipe (54) in a well-shaped manner. The bottom end of the first vertical pipe (53) passes through the second channel (52) and is communicated with the second channel (52). The top end of the first vertical pipe (53) passes through the first channel (51) and is blocked or opened by the solenoid valve I (41). The bottom end of the second vertical pipe (54) passes through the second channel (52) and is in communication with the second channel (52), and the top end of the second vertical pipe (54) passes through the first channel (51) and is blocked or opened by the solenoid valve II (42); The air inlet pipe (44) is connected to the middle of the first channel (51), and the air inlet pipe (44) is connected to the middle of the second channel (52). The distances from the air inlet pipe (44) to the first vertical pipe (53) and the second vertical pipe (54) are equal, and the distances from the air outlet pipe (43) to the first vertical pipe (53) and the second vertical pipe (54) are also equal.

3. The gas-fired non-electric manual control system applicable to all machines according to claim 2, characterized in that: The gas solenoid valve (4) further includes a pressure sensor (6), and the pressure sensor (6) is in communication with the end of the first channel (51); The fuel control component comprises a valve body (7), an electronic controller (71) and a fuel nozzle (72). The electronic controller (71) is electrically connected to a pressure sensor (6). The pressure sensor (6) is used to detect the gas pressure and transmit the gas pressure signal to the electronic controller (71). The electronic controller (71) is used to automatically control the opening size of the valve body (7) according to the gas pressure signal, and to control the opening size of the solenoid valve I (41) and the solenoid valve II (42).

4. The gas-fired non-electric manual control system applicable to all machines according to claim 2, characterized in that: The first channel (51) and the second channel (52) are each vertically connected with two connecting pipes (45), and the first vertical pipe (53) and the second vertical pipe (54) are respectively inserted into the corresponding connecting pipes (45); the end of the first channel (51), the end of the second channel (52) and the bottom of the connecting pipe (45) on the second channel (52) are all provided with plugs.

5. The gas-fired non-electric manual control system applicable to all machines according to claim 2, characterized in that: A first mounting hole (55) and a second mounting hole (56) are provided on the top surface of the solenoid valve body (5), wherein the first mounting hole (55) is connected to the top of the first vertical pipe (53), and the second mounting hole (56) is connected to the top of the second vertical pipe (54). The solenoid valve I (41) is threadedly connected to the first mounting hole (55), and the solenoid valve II (42) is threadedly connected to the second mounting hole (56).

6. The gas-fired non-electric manual control system applicable to all machines according to claim 1, characterized in that: The gas control unit (1) further comprises pipeline natural gas (15), and the pipeline natural gas (15) is connected between the first-stage pressure reducing valve No. 2 (14) and the gas control component.

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