A fuel supply system, an engine, a control method, and a control system

Abstract

The application belongs to the field of aero-engines, and particularly relates to a fuel supply system, an engine, a control method and a control system. One end of the first oil path fuel pipeline is connected with the small-nozzle fuel nozzle, and the other end is connected with the high-pressure total oil inlet fuel pipeline. One end of the second oil path fuel pipeline is connected with the small-nozzle fuel nozzle, and the other end is connected with the high-pressure total oil inlet fuel pipeline. The fuel distributor and the fireproof electromagnetic valve are arranged on the first oil path fuel pipeline. The fuel distributor is close to the small-nozzle fuel nozzle, the fireproof electromagnetic valve is located close to the total oil inlet fuel pipeline, and the fireproof electromagnetic valve is located at the inlet of the first oil path fuel pipeline. The high-pressure total oil inlet fuel pipeline is connected with the fuel pump, and the fuel pump is connected with the fuel tank. The fuel supply system can control the flow of the fuel pipeline when a fire occurs, prevent the fuel pipeline containing fuel from being burnt off, prevent the fire from expanding, and improve safety.

Description

Technical Field

[0001] This invention belongs to the field of aero-engines, specifically relating to a fuel supply system, an engine, a control method, and a control system. Background Technology

[0002] An aero-engine is a highly complex and precise thermodynamic machine. As the heart of an aircraft, it not only powers the aircraft's flight but also serves as a crucial driving force for the development of the aviation industry. Every major transformation in the history of human aviation has been inseparable from the technological advancements in aero-engines.

[0003] Fuel lines are mounted on the outer surface of the engine. If a fire breaks out around the engine, there is a risk of the fuel lines burning out if there is little or no fuel in them. If the fuel lines burn out due to low fuel levels, fuel leakage can cause the fire to escalate and endanger aviation safety.

[0004] In view of this, the present invention is hereby proposed. Summary of the Invention

[0005] To address the technical problems existing in the prior art, the present invention provides a fuel supply system, an engine, a control method, and a control system. The fuel supply system of the present invention can control the flow rate of the fuel pipeline in the event of a fire, prevent the fuel pipeline containing fuel from being burned out, prevent the fire from spreading, and improve safety.

[0006] This invention includes the following technical solutions:

[0007] The first aspect of the present invention provides a fuel supply system, including a high-pressure main fuel inlet line, a first fuel line, a second fuel line, a large-nozzle fuel nozzle, a small-nozzle fuel nozzle, a fuel tank, and a fuel pump.

[0008] One end of the first fuel line is connected to the small nozzle fuel injector, and the other end is connected to the high-pressure main fuel inlet line.

[0009] One end of the second fuel line is connected to the small nozzle fuel injector, and the other end is connected to the high-pressure main fuel inlet line;

[0010] A fuel distributor and a fireproof solenoid valve are provided on the first fuel line; the fuel distributor is close to the small nozzle fuel nozzle, the fireproof solenoid valve is located close to the main fuel line, and the fireproof solenoid valve is located at the inlet of the first fuel line.

[0011] The high-pressure main fuel inlet line is connected to the fuel pump, and the fuel pump is connected to the fuel tank.

[0012] Furthermore, it also includes a controller and a flame detector, the flame detector being disposed around the engine and connected to the controller, the controller being connected to the fireproof solenoid valve.

[0013] Furthermore, the controller is connected to the fuel pump.

[0014] Furthermore, multiple flame detectors are provided.

[0015] Furthermore, multiple large-nozzle fuel nozzles are provided; and / or multiple small-nozzle fuel nozzles are provided.

[0016] A second aspect of the present invention provides an engine including the fuel supply system described above.

[0017] A third aspect of the present invention provides a fuel supply system control method, including the fuel supply system described above, wherein when a fire occurs around the engine, the controller controls the fireproof solenoid valve to close when the fuel pressure P in the high-pressure main fuel inlet line is P∈[P1,P2].

[0018] Where: P1 is the minimum total fuel inlet fuel line pressure when the fuel distributor is open, and P2 is the maximum total fuel inlet fuel line pressure when the second fuel line is burned out.

[0019] Furthermore, it includes the following steps:

[0020] The flame detector sends the detected fire signal to the controller;

[0021] When the fuel pressure P∈[P1,P2] in the high-pressure main fuel inlet line is controlled by the controller to close the fireproof solenoid valve;

[0022] Where: P1 is the minimum total fuel inlet fuel line pressure when the fuel distributor is open, and P2 is the maximum total fuel inlet fuel line pressure when the second fuel line is burned out.

[0023] A fourth aspect of the present invention provides a control system for a fuel supply system, wherein the controller of the aforementioned fuel supply system comprises:

[0024] Signal receiving unit: used to receive fire signals emitted by flame detectors;

[0025] Flow control unit: used to receive engine power demand and control the fuel pressure or fuel flow of the main fuel inlet line according to the engine power demand;

[0026] Fireproof solenoid valve control unit: Based on the fire signal received by the signal receiving unit and the fuel pressure P∈[P1,P2] controlled by the flow control unit, the fireproof solenoid valve is controlled to close.

[0027] Where: P1 is the minimum total fuel inlet fuel line pressure when the fuel distributor is open, and P2 is the maximum total fuel inlet fuel line pressure when the second fuel line is burned out.

[0028] By adopting the above technical solution, the present invention has the following advantages:

[0029] 1. The fuel supply system of the present invention can control the flow rate of the fuel pipeline in the event of a fire, prevent the fuel pipeline containing fuel from being burned out, prevent the fire from spreading, and improve safety.

[0030] 2. This invention provides a highly safe fuel supply system and control method that can ensure that all operating conditions of the aircraft engine (corresponding to the minimum to the maximum fuel supply) meet the fire prevention requirements of civil aviation regulations, avoid fuel pipeline leakage leading to the spread of fire, and effectively improve the flight safety of the aircraft. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of the fuel supply system in an embodiment of the present invention. Figure 1 ;

[0033] Figure 2 This is a schematic diagram of the fuel pressure-flow relationship of the fuel supply system during engine operation in an embodiment of the present invention. Figure 1 ;

[0034] Figure 3 This is a schematic diagram of the structure of a fuel supply system according to an embodiment of the present invention. Figure 2 ;

[0035] Figure 4 This is a schematic diagram of the fuel pressure-flow relationship of the fuel supply system during engine operation in an embodiment of the present invention. Figure 2 .

[0036] In the attached diagram: 10-High-pressure main fuel inlet line, 20-First fuel line line, 30-Second fuel line line, 40-Small nozzle fuel nozzle, 50-Large nozzle fuel nozzle, 60-Fuel tank, 70-Fuel pump, 80-Fuel distributor, 90-Fireproof solenoid valve, 100-Controller, 110-Flame detector. Detailed Implementation

[0037] The following description provides many different embodiments or examples for implementing various features of the invention. The elements and arrangements described in the specific examples below are only for concise expression of the invention and are merely examples, not intended to limit the invention.

[0038] In the description of this invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features.

[0039] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] To ensure an aircraft can operate across a wide range of conditions, its engines must maintain high combustion efficiency. A key condition for maintaining high combustion efficiency in aircraft engines is achieving high fuel atomization quality. Therefore, the fuel supply system of an aircraft engine must ensure that the fuel supply pressure remains at a high level across a wide range of fuel supply flow rates, thereby maintaining high fuel atomization quality.

[0041] At present, the fuel supply system with pressure-controlled fuel distributor 80 is commonly used on aircraft engines to maintain the fuel pressure at a high level. This fuel supply system uses fuel pressure to control the opening and closing of the fuel distributor 80 and controls two working states of the fuel system: (1) fuel supply through only one fuel line; (2) fuel supply through both lines.

[0042] The specific methods are as follows: Figure 1 The diagram shows the structure of the fuel supply system. Under low fuel flow conditions, the fuel distributor 80 is closed, and all fuel enters the first fuel line 20 and is ejected through the small nozzle 40, thereby obtaining a higher injection pressure. Under high fuel flow conditions, the fuel distributor 80 is opened under the action of fuel pressure, allowing fuel to flow simultaneously through the first fuel line 20 and the second fuel line 30, and be ejected from the large nozzle 50 and the small nozzle 40 respectively, thereby ensuring that the fuel pressure of the fuel system does not exceed the equipment's tolerance when supplying a large fuel flow.

[0043] To ensure public flight safety, civil aviation regulations require fuel systems to have fire-resistant capabilities. Specifically, in the event of an external accident causing a fire near the fuel line, the fuel line must not be burned through within 5 minutes, or if it is burned through, there must be no leakage of flammable liquids that could cause the fire to spread. In other words, when a fire occurs in the external environment, the fuel line is only allowed to maintain one of two states: first, a high fuel flow rate in the line to effectively dissipate heat transferred from the external flames to the line walls, preventing the line from burning through; second, no fuel in the line, ensuring that even if the line burns through, there will be no fuel leakage or fire spread.

[0044] like Figure 2 The diagram shows the fuel pressure-flow relationship of the fuel supply system during engine operation. The horizontal axis represents fuel pressure, and the vertical axis represents fuel flow. Point A represents the minimum fuel flow in the high-pressure main fuel inlet line 10 of the fuel supply system. Point B represents the minimum fuel pressure in the main fuel inlet line when the fuel distributor 80 is open. Point C represents the maximum fuel pressure in the main fuel inlet line when the second fuel line 30 is burned out. Point D represents the maximum fuel flow in the high-pressure main fuel inlet line 10 of the fuel supply system. When the fuel pressure is between points B and C (i.e., P∈[P1,P2]), the fuel distributor 80 is open. At this time, the fuel flow into the second fuel line 30 is relatively small. If a fire occurs, the second fuel line 30 is prone to burnout, leading to fuel leakage.

[0045] The first aspect of this embodiment provides a fuel supply system, such as Figure 3 As shown, it includes a high-pressure main fuel inlet line 10, a first fuel line 20, a second fuel line 30, a large-nozzle fuel nozzle 50, a small-nozzle fuel nozzle 40, a fuel tank 60, and a fuel pump 70.

[0046] One end of the first fuel line 20 is connected to the small nozzle fuel nozzle 40, and the other end is connected to the high-pressure main fuel inlet line 10;

[0047] One end of the second oil circuit fuel line 30 is connected to the small nozzle fuel nozzle 40, and the other end is connected to the high pressure main fuel inlet line 10;

[0048] A fuel distributor 80 and a fireproof solenoid valve 90 are provided on the first fuel line 20; the fuel distributor 80 is close to the small nozzle fuel nozzle 40, the fireproof solenoid valve 90 is located close to the main fuel line, and the fireproof solenoid valve 90 is located at the inlet of the first fuel line 20.

[0049] The high-pressure main fuel inlet line 10 is connected to the fuel pump 70, and the fuel pump 70 is connected to the fuel tank 60.

[0050] In the event of a fire, this invention closes the fireproof solenoid valve 90 of the fuel supply system when the fuel pressure is between point B and point C (i.e., P∈[P1,P2]), preventing fuel from entering the second fuel line 30. Even if the second fuel line 30 burns out, there will be no fuel leakage. At this time, the fuel flow rate of the first fuel line 20 is very large, which can carry away the heat transferred from the external flame to the pipe wall of the first fuel line 20, ensuring that the first fuel line is not burned out.

[0051] When the fuel pressure is less than at point B, the fuel pressure at point B is P1. The fuel distributor 80 will not be opened, and the fuel will not enter the second fuel line 30. All the fuel will enter the first fuel line 20. At this time, the fuel flow rate of the first fuel line 20 is very large, which can carry away the heat transferred from the external flame to the pipe wall of the first fuel line 20 in time, ensuring that the first fuel line is not burned out.

[0052] When the fuel pressure is greater than point C, the fuel pressure at point C is P2. The fuel distributor 80 opens, and fuel enters the first fuel line 20 and the second fuel line 30 respectively. At this time, the fuel flow rates of the first fuel line 20 and the second fuel line 30 are both large, which can carry away the heat transferred from the external flame to the pipe wall of the first fuel line 20 and the second fuel line 30, ensuring that the first fuel line and the second fuel line are not burned out.

[0053] It should be noted that this fuel supply system is only used to prevent the fire from spreading due to fuel leakage in the fuel pipeline during and shortly after a fire occurs; fire extinguishing operations will be carried out when a fire is known to have occurred or within a short period of time. The specific fire extinguishing operations are known to those skilled in the art and will not be described in detail here.

[0054] Furthermore, it also includes a controller 100 and a flame detector 110, the flame detector 110 being disposed around the engine and connected to the controller 100, which in turn is connected to the fire-resistant solenoid valve 90. Based on this, automated control of the fire-resistant solenoid valve 90 can be achieved.

[0055] Furthermore, the controller 100 is connected to the fuel pump 70. The same controller 100 simultaneously controls both the fuel pump 70 and the fireproof solenoid valve 90, which facilitates the controller 100's control of the fireproof solenoid valve 90 and improves the accuracy and effectiveness of control.

[0056] Furthermore, multiple flame detectors 110 are provided. This improves detection accuracy and ensures effective control.

[0057] Furthermore, multiple large-nozzle fuel nozzles 50 are provided; and / or multiple small-nozzle fuel nozzles 40 are provided. This makes the fuel injection more uniform.

[0058] like Figure 3 As shown, when the engine is operating normally (no fire), the controller 100 determines the required fuel supply based on the engine's power demand and controls the fuel pump 70 to pressurize the fuel in the fuel tank 60 and introduce it into the high-pressure main fuel inlet line 10. Simultaneously, the flame detector 110 transmits a normal signal to the controller 100, which then controls the fireproof solenoid valve 90 to be in the open state. When the fuel pressure after the fuel pump 70 (i.e., the fuel pressure in the high-pressure main fuel inlet line 10) corresponding to the required fuel supply is lower than the opening pressure of the fuel distributor 80 (i.e., when the required fuel supply is lower than the opening pressure of the fuel distributor 80), the system will automatically open the fuel supply. Figure 4 In the section from A to B, the fuel distributor 80 is in the off state, and all fuel enters the small-nozzle fuel nozzles 40 (several) through the first fuel line 20 to complete fuel atomization and combustion. When the fuel pressure after the fuel pump 70 corresponding to the required fuel supply (i.e., the fuel pressure in the high-pressure main fuel line 10) is higher than the opening pressure of the fuel distributor 80 (i.e., when the fuel supply is less than the required fuel supply), the fuel pressure decreases. Figure 4 In the section from B to D, the fuel distributor 80 is in the open state. Fuel enters the small nozzle fuel nozzle 40 (several) and the large nozzle fuel nozzle 50 (several) through the first fuel line 20 and the second fuel line 30 to complete fuel atomization and combustion.

[0059] like Figure 3 As shown, when an engine fire occurs, the controller 100 determines the required fuel supply based on the engine's power demand and controls the fuel pump 70 to pressurize the fuel in the fuel tank 60 and introduce it into the high-pressure main fuel inlet line 10. Simultaneously, the flame detector 110 transmits a fire signal to the controller 100. At this time, the controller 100 issues different commands to the fire-prevention solenoid valve 90 based on the fuel supply, including the following three scenarios.

[0060] The first scenario: When the fuel pressure after the fuel pump 70 corresponding to the required fuel supply is lower than the opening pressure of the fuel distributor 80 (i.e.) Figure 4(Between A and B) At this time, the fuel flow will not cause the fuel distributor 80 to open. Control logic: The controller 100 controls the fireproof solenoid valve 90 to open, and the fuel distributor 80 is in the cut-off state. Effect: All fuel enters the small nozzle fuel nozzles 40 (several) through the first fuel line 20 to complete fuel atomization and combustion; at this time, the fuel flow of the high-pressure main fuel line 10 and the first fuel line 20 is equal and higher than the minimum fireproof flow of the fuel line (i.e., the first fuel line 20 will not be burned out). That is, the fuel flow in the high-pressure main fuel line 10 and the first fuel line 20 is large, which can promptly remove the heat transferred from the external flame to the pipe wall, ensuring that the fuel line is not burned out; while at this time, the flow of the second fuel line 30 is 0, which can ensure that even if the second fuel line is burned out, it will not lead to fuel leakage or spread of the fire.

[0061] It should be noted that the fuel pump 70 and the fuel tank 60 are connected through a low-pressure main fuel inlet line. The fuel pump 70 and the low-pressure main fuel inlet line can be located inside or outside the fuel tank 60. However, it should be clear that the fuel flow rate of the low-pressure main fuel inlet line and the fuel flow rate of the high-pressure main fuel inlet line 10 are the same.

[0062] The second scenario: When the fuel pressure after the fuel pump 70 corresponding to the required fuel supply is slightly higher than the opening pressure of the fuel distributor 80 (i.e., P∈[P1,P2]), Figure 2 In the section from B to C, the fuel pressure at this point will cause the fuel distributor 80 to open. Control logic: Controller 100 controls the flame arrestor solenoid valve 90 to shut off, so fuel will not pass through the flame arrestor solenoid valve 90, and naturally the fuel distributor 80 will not open. Effect: All fuel enters the small nozzle fuel injectors 40 (several) through the first fuel line fuel line 20 to complete fuel atomization (i.e., Figure 4 The section from B to C becomes the section from B to E, and combustion takes place. The fuel flow rates in the high-pressure main fuel inlet line 10 and the first fuel line 20 are equal and higher than the minimum fire-prevention flow rate for fuel lines. That is, the fuel flow rates in the high-pressure main fuel inlet line 10 and the first fuel line 20 are very high, which can promptly remove the heat transferred from the external flame to the pipe wall, ensuring that the fuel lines are not burned out; while at this time, the flow rate in the second fuel line 30 is 0, ensuring that even if the second fuel line burns out, it will not lead to fuel leakage or spread of the fire.

[0063] The third scenario: When the fuel pressure after the fuel pump 70, corresponding to the required fuel supply, is much higher than the opening pressure of the fuel distributor 80 (i.e.) Figure 4(C to D range). Control logic: Controller 100 controls the fireproof solenoid valve 90 to open, and the fuel distributor 80 is in the open state. Effect: Fuel enters the small nozzle fuel nozzle 40 (several) and large nozzle fuel nozzle 50 (several) through the first fuel line 20 and the second fuel line 30 respectively to complete fuel atomization and combustion. At this time, the flow rate of the high-pressure main fuel line 10 is the total fuel flow rate (C to D range), which is much higher than the minimum fireproof flow rate of the fuel line. The flow rates of the first fuel line 20 (F to J range) and the second fuel line 30 (G to H range) are also higher than the minimum fireproof flow rates of the fuel line. That is, the fuel flow rates in the high-pressure main fuel line 10, the first fuel line 20, and the second fuel line 30 are all very large, which can promptly remove the heat transferred from the external flame to the pipe wall, ensuring that the fuel line is not burned out.

[0064] It should be noted that in the control of the second situation described above, after the fireproof solenoid valve 90 is closed, the control of the fireproof battery valve 90 will no longer be carried out in accordance with the method of the present invention, because at this time the second oil circuit fuel line 30 will be at risk of being burned out if there is no fuel. At this time, only the first oil circuit fuel line 20 is supplied with fuel. The specific control method and process will not be described in detail here.

[0065] The second aspect of this embodiment provides an engine, including the fuel supply system described above.

[0066] The third aspect of this embodiment provides a fuel supply system control method, including the fuel supply system described above, wherein when a fire occurs around the engine, the controller 100 controls the fireproof solenoid valve 90 to close when the fuel pressure P in the high-pressure main fuel inlet line 10 is P1,P2;

[0067] Where: P1 is the minimum total fuel inlet fuel line pressure when the fuel distributor 80 is open, and P2 is the maximum total fuel inlet fuel line pressure when the second fuel line 30 is burned out.

[0068] Furthermore, it includes the following steps:

[0069] The fireproof solenoid valve 90 sends the detected fire signal to the controller 100;

[0070] When the fuel pressure P in the high-pressure main fuel inlet line 10 is P∈[P1,P2], the controller 100 controls the fireproof solenoid valve 90 to close.

[0071] Where: P1 is the minimum total fuel inlet fuel line pressure when the fuel distributor 80 is open, and P2 is the maximum total fuel inlet fuel line pressure when the second fuel line 30 is burned out.

[0072] The fourth aspect of this embodiment provides a control system for a fuel supply system, including the fuel supply system described above, characterized in that the controller 100 includes:

[0073] Signal receiving unit: used to receive fire signals transmitted by flame detector 110;

[0074] Flow control unit: used to receive engine power demand and control the fuel pressure or fuel pressure flow of the main fuel inlet line according to the engine power demand;

[0075] Fireproof solenoid valve 90 control unit: Based on the fire signal received by the signal receiving unit and the fuel pressure P∈[P1,P2] controlled by the flow control unit, control the fireproof solenoid valve 90 to close;

[0076] Where: P1 is the minimum total fuel inlet fuel line pressure when the fuel distributor 80 is open, and P2 is the maximum total fuel inlet fuel line pressure when the second fuel line 30 is burned out.

[0077] The steps of the methods or algorithms described in conjunction with the embodiments disclosed herein can be implemented directly by hardware, a software module executed by a processor, or a combination of both. The software module can be located in random access memory (RAM), main memory, read-only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, removable disk, CD-ROM, or any other form of readable storage medium known in the art.

[0078] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A fuel supply system, characterized in that, It includes a high-pressure main fuel inlet line (10), a first fuel line line (20), a second fuel line line (30), a large nozzle fuel nozzle (50), a small nozzle fuel nozzle (40), a fuel tank (60), and a fuel pump (70). One end of the first oil circuit fuel line (20) is connected to the small nozzle fuel nozzle (40), and the other end is connected to the high pressure main fuel inlet line (10). One end of the second oil circuit fuel line (30) is connected to the small nozzle fuel nozzle (40), and the other end is connected to the high pressure main fuel inlet line (10). A fuel distributor (80) and a fireproof solenoid valve (90) are provided on the second fuel line (30); the fuel distributor (80) is close to the small nozzle fuel nozzle (40), the fireproof solenoid valve (90) is located close to the main fuel line, and the fireproof solenoid valve (90) is located at the inlet of the second fuel line (30); when a fire occurs around the engine and the main fuel pressure is between the minimum opening pressure P1 of the fuel distributor and the maximum total pressure P2 of the second fuel line (30) being burned out, the fireproof solenoid valve (90) is closed; The high-pressure main fuel inlet line (10) is connected to the fuel pump (70), and the fuel pump (70) is connected to the fuel tank (60). It also includes a controller (100) and a flame detector (110), the flame detector (110) being disposed around the engine and connected to the controller (100), the controller (100) being connected to the fireproof solenoid valve (90).

2. The fuel supply system as described in claim 1, characterized in that, The controller (100) is connected to the fuel pump (70).

3. A fuel supply system as described in claim 1, characterized in that, Multiple flame detectors (110) are provided.

4. A fuel supply system as described in claim 1, characterized in that, Multiple large-nozzle fuel nozzles (50) are provided; and / or multiple small-nozzle fuel nozzles (40) are provided.

5. An engine, characterized in that, Includes a fuel supply system as described in any one of claims 1-4.

6. A fuel supply system control method, comprising a fuel supply system as described in any one of claims 1-4, characterized in that, When a fire occurs around the engine, the fuel pressure in the high-pressure main fuel inlet line (10) will be... The controller (100) controls the fireproof solenoid valve (90) to close; in: The minimum total fuel inlet fuel line pressure that the fuel distributor (80) opens to. The maximum total fuel pressure in the fuel line that is burned out in the second fuel line (30) is the fuel pressure in the fuel line.

7. The fuel supply system control method as described in claim 6, characterized in that, Includes the following steps: The flame detector (110) sends the detected fire signal to the controller (100). Fuel pressure in the high-pressure main fuel inlet line (10) The controller (100) controls the fireproof solenoid valve (90) to close; in: The minimum total fuel inlet fuel line pressure that opens for the fuel distributor (80) The maximum total fuel pressure in the fuel line that is burned out in the second fuel line (30) is the fuel pressure in the fuel line.

8. A control system for a fuel supply system, comprising the fuel supply system as described in any one of claims 1-4, characterized in that, The controller (100) includes: Signal receiving unit: used to receive fire signals emitted by the flame detector (110); Flow control unit: Used to receive engine power demand and, based on the engine power demand... Demand controls the fuel pressure or fuel flow rate in the main fuel inlet line; Fireproof solenoid valve (90) control unit: Based on the fire signal received by the signal receiving unit and the fuel pressure controlled by the flow control unit. , control the fireproof solenoid valve (90) to close; in: The minimum total fuel inlet fuel line pressure that opens for the fuel distributor (80) The maximum total fuel pressure in the fuel line that is burned out in the second fuel line (30) is the fuel pressure in the fuel line.

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