Engine fuel control method and device, electronic equipment and storage medium

Abstract

The application discloses an engine fuel control method, device, electronic equipment and storage medium. The control method comprises the following steps: judging whether at least one target oil path in the at least two oil paths meets an about-to-open condition according to an operating parameter of the engine; in the case of yes, determining a fuel distribution ratio according to the operating parameter, the fuel distribution ratio representing the fuel flow ratio of each oil path; and controlling a device for adjusting the fuel flow on the target oil path according to the fuel distribution ratio, wherein the fuel flow of the target oil path meeting the about-to-open condition is smaller than the fuel flow of the target oil path meeting an open condition. Thus, the engine speed fluctuation when the oil path is opened can be prevented.

Description

Technical Field

[0001] This invention relates to the field of engine technology, and more particularly to a fuel control method, device, electronic equipment, and storage medium for an engine. Background Technology

[0002] Currently, internal combustion engines typically have multiple fuel lines to supply fuel to the combustion chamber. Taking the main combustion stage fuel line as an example, even after it closes, residual fuel remains in the lines, posing a risk of coking and carbon buildup. To prevent this, the main combustion stage fuel line automatically purges the remaining fuel after closure. When the main combustion stage fuel line reopens, engine speed fluctuations occur because the lines are purged and free of residual fuel. This is because when the main combustion stage fuel line first opens, there is no residual fuel participating in combustion, causing a drop in engine speed. However, the fuel flow rate supplied to the combustion chamber by the main combustion stage fuel line is constant. Once the main combustion stage fuel line resumes supplying fuel, the engine speed overshoots and increases. Furthermore, due to the inherent inconsistency between the fluctuations caused by the precision of fuel flow control and the opening conditions of the main combustion stage fuel line, the engine speed may switch between opening and closing near the opening conditions, resulting in a decrease in engine speed when the throttle is turned. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the defect in the prior art that when the oil circuit is first opened, there is no residual oil in the oil circuit pipeline to participate in the combustion in the combustion chamber, which leads to fluctuations in engine speed. The present invention provides a fuel control method, device, electronic device, and storage medium for an engine.

[0004] The present invention solves the above-mentioned technical problems through the following technical solution:

[0005] In a first aspect, a method for controlling an engine is provided, the engine including a combustion chamber and at least two fuel lines, the fuel lines being used to supply fuel to the combustion chamber; the control method includes:

[0006] Based on the engine's operating parameters, determine whether at least one of the at least two oil circuits meets the conditions for imminent opening;

[0007] If the judgment result is yes, the fuel distribution ratio is determined according to the operating parameters, and the fuel distribution ratio represents the fuel flow ratio of each fuel line;

[0008] The device used to adjust the fuel flow rate on the target oil line is controlled according to the fuel distribution ratio, wherein the fuel flow rate of the target oil line that meets the condition for imminent opening is less than the fuel flow rate of the target oil line that meets the opening condition.

[0009] Optionally, the engine's operating parameters include: fuel flow rate and air-fuel ratio; determining whether at least one of the at least two fuel lines meets the upcoming opening condition includes: if the fuel flow rate and air-fuel ratio are within their respective threshold ranges, determining that the target fuel line meets the upcoming opening condition;

[0010] Alternatively, the engine operating parameters include: engine speed; determining whether at least one of the at least two fuel lines meets the upcoming opening condition includes: determining that the target fuel line meets the upcoming opening condition when the fuel flow rate and engine speed are within a preset range.

[0011] Optionally, determining the fuel distribution ratio based on the operating parameters includes:

[0012] The fuel distribution ratio is calculated based on fuel flow rate, fuel-air ratio, pre-filled fuel flow rate, purge fuel flow rate of the target fuel line, total fuel flow rate increment within the calculation period, fuel-air ratio increment within the calculation period, and total pre-filled fuel volume of the at least two fuel lines.

[0013] The pre-filled fuel flow rate is determined based on a fuel step test, the purge fuel flow rate is determined based on a purge test, and the total pre-filled fuel volume is obtained based on three-dimensional calculation of the combustion chamber or measurement of a filling test; the fuel flow rate, the fuel-air ratio, the total fuel flow rate increment within the calculation period, and the fuel-air ratio increment within the calculation period are obtained based on measurement data.

[0014] Optionally, determining the fuel distribution ratio based on the operating parameters includes:

[0015] Based on the mapping relationship between operating parameters and fuel distribution ratio, determine the fuel distribution ratio corresponding to the current operating parameters.

[0016] In a second aspect, a control device for an engine is provided, the engine including a combustion chamber and at least two fuel lines, the at least two fuel lines being used to supply fuel to the combustion chamber; the control device includes:

[0017] The judgment module is used to determine, based on the engine's operating parameters, whether there is at least one target oil circuit among the at least two oil circuits that meets the conditions for imminent opening;

[0018] The determination module is used to determine the fuel distribution ratio based on the operating parameters when the determination result is yes, wherein the fuel distribution ratio represents the fuel flow ratio of each fuel line;

[0019] An adjustment module is used to control a device on the target oil line that adjusts the fuel flow rate according to the fuel distribution ratio, wherein the fuel flow rate of the target oil line that meets the conditions for imminent opening is less than the fuel flow rate of the target oil line that meets the conditions for opening.

[0020] Optionally, the engine's operating parameters include: fuel flow rate and air-fuel ratio; the judgment module is used to: determine that the target oil circuit meets the upcoming opening condition when the fuel flow rate and air-fuel ratio are within their respective threshold ranges;

[0021] Alternatively, the engine operating parameters include: engine speed; the judgment module is used to: determine that the target fuel circuit meets the upcoming opening condition when the fuel flow rate and engine speed are within a preset range.

[0022] Optionally, the determining module is used to:

[0023] The fuel distribution ratio is calculated based on fuel flow rate, fuel-air ratio, pre-filled fuel flow rate, purge fuel flow rate of the target fuel line, total fuel flow rate increment within the calculation period, fuel-air ratio increment within the calculation period, and total pre-filled fuel volume of the at least two fuel lines.

[0024] The pre-filled fuel flow rate is determined based on a fuel step test, the purge fuel flow rate is determined based on a purge test, and the total pre-filled fuel volume is obtained based on three-dimensional calculation of the combustion chamber or measurement of a filling test; the fuel flow rate, the fuel-air ratio, the total fuel flow rate increment within the calculation period, and the fuel-air ratio increment within the calculation period are obtained based on measurement data.

[0025] Optionally, the determining module is used to:

[0026] Based on the mapping relationship between operating parameters and fuel distribution ratio, determine the fuel distribution ratio corresponding to the current operating parameters.

[0027] Thirdly, an electronic device is provided, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the method described in any of the preceding claims.

[0028] Fourthly, a readable storage medium is provided having a computer program stored thereon, which, when executed by a processor, implements the method described in any of the preceding claims.

[0029] The positive and progressive effects of this invention are as follows:

[0030] In this embodiment of the invention, before the fuel line is opened, that is, when the fuel line is determined to be in the stage of being about to be opened, the fuel line is pre-filled with fuel according to the engine's operating parameters, so that when the fuel line is opened, the fuel line is filled with fuel and can participate in combustion in the combustion chamber, thereby preventing engine speed fluctuations when the fuel line is opened. Attached Figure Description

[0031] Figure 1a A partial structural schematic diagram of an engine provided as an exemplary embodiment of the present invention;

[0032] Figure 1b A schematic diagram of a nozzle and a portion of the main combustion stage fuel circuit of an engine, provided as an exemplary embodiment of the present invention;

[0033] Figure 2 A flowchart illustrating an engine fuel control method as provided in an exemplary embodiment of the present invention;

[0034] Figure 3 A schematic diagram of a fuel control curve used in an engine fuel control method provided as an exemplary embodiment of the present invention;

[0035] Figure 4 A schematic diagram of a fuel control curve used in another fuel control method for an engine provided as an exemplary embodiment of the present invention;

[0036] Figure 5 A schematic diagram of a fuel control device for an engine provided as an exemplary embodiment of the present invention;

[0037] Figure 6 This is a schematic diagram of the structure of an electronic device shown in an example embodiment of the present invention. Detailed Implementation

[0038] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the embodiments described herein.

[0039] Figure 1aThis is a partial structural diagram of an engine provided as an exemplary embodiment of the present invention. The engine may be, for example, a gas turbine engine, comprising a fuel tank 11, a combustion chamber 12, and at least two stages of fuel lines. Taking a gas turbine engine with three stages of fuel lines as an example, these three stages are a pre-combustion stage auxiliary fuel line 13, a pre-combustion stage main fuel line 14, and a main combustion stage fuel line 15. The fuel lines are equipped with fuel pumps 131, 141, and 151, distribution valves 132, 142, and 152, flow meters 133, 143, and 153, and pressure sensors 134, 144, and 154. The engine's operating parameters are determined by measuring data from the flow meters and pressure sensors, thereby determining the opening timing of each fuel line. When the opening timing is determined, the fuel pumps pressurize the fuel in the fuel tank and supply fuel to the combustion chamber through the fuel line pipes. Similarly, by using measurement data from flow meters and pressure sensors, the timing for shutting down each oil circuit is determined. Once the shut-down timing is determined, the distribution valve and oil pump are shut off, and the supply of fuel to the combustion chamber is stopped.

[0040] For any fuel circuit, taking the main combustion stage fuel circuit 15 as an example, after the main combustion stage fuel circuit 15 is opened, all nozzles deployed on the combustion chamber are in working condition. Figure 1b This is a schematic diagram of a nozzle and a partial structure of the main combustion stage fuel circuit of an engine, provided as an exemplary embodiment of the present invention. The output end of the main combustion stage fuel circuit 15 is connected to the nozzle, which includes multiple injection points, such as the main combustion stage negative pressure P- injection point 135 and the main combustion stage positive pressure P+ injection point 135, for supplying fuel from the fuel circuit to the combustion chamber.

[0041] After the main combustion stage fuel circuit 15 is closed, residual fuel remains in its pipes, posing a risk of coking and carbon buildup. Related technologies address this by designing the pressure distribution of the injection points to automatically purge residual fuel from the pipes after the main combustion stage fuel circuit's distribution valve closes, preventing this risk. When the main combustion stage fuel circuit 15 reopens, engine speed fluctuations occur during its operation because the pipes have been purged of residual fuel. This is because when the main combustion stage fuel circuit 15 first opens, no residual fuel participates in combustion in the combustion chamber, causing a drop in engine speed. Since the fuel flow rate supplied to the combustion chamber by the main combustion stage fuel circuit 15 is constant, the engine speed overshoots and increases once it begins supplying fuel. Furthermore, due to the inherent inconsistency between the fluctuations caused by the fuel flow control precision and the opening conditions of the main combustion stage fuel circuit, the engine speed fluctuates between the opening and closing of the main combustion stage fuel circuit near these conditions, resulting in a decrease in engine speed when the throttle is turned.

[0042] Based on the above, embodiments of the present invention provide a fuel control method for an engine, such as a gas turbine engine. The following describes the method in conjunction with... Figure 1a and Figure 1b The process of controlling the fuel quantity of the engine is explained in detail. When the opening or closing time has not been reached, the main combustion stage fuel line 15 is opened in advance for pre-filling to avoid engine speed fluctuations when the main combustion stage fuel line is opened due to the absence of residual fuel in the pipeline.

[0043] Figure 2 A flowchart of an engine fuel control method provided as an exemplary embodiment of the present invention is included, the method comprising the following steps:

[0044] Step 201: Determine whether the engine's main combustion stage fuel circuit meets the conditions for imminent activation based on the engine's operating parameters.

[0045] The engine's operating parameters include at least one of the following: fuel flow rate (wf) in the main combustion stage fuel circuit, air-fuel ratio (FAR) within the ECC (elecronic engine control) calculation cycle, engine speed (n), fuel distribution ratio (M) in the fuel circuit, total inlet temperature (Tt3) of the combustion chamber, static pressure (PS3) at the combustion chamber inlet, and total inlet temperature (Tt25) of the engine compressor. The values ​​of these operating parameters can be determined based on measurement data from measuring devices.

[0046] In one embodiment, the fuel-air ratio (FAR) and fuel flow rate (wf) are used as criteria for determining the imminent opening condition. Specifically, if wf is within the range of [wf0, wf1] and FAR is within the range of [FAR0, FAR1], then the main combustion stage fuel circuit does not meet either the opening or closing condition. In this case, the main combustion stage fuel circuit is determined to meet the imminent opening condition, and fuel pre-filling is required.

[0047] Otherwise, if wf is in the range of (0, wf0) or FAR is in the range of (0, FAR0), then the main combustion stage fuel circuit is determined to meet the closing condition; if wf is in the range of (wf1, wfmax) and FAR is in the range of (FAR1, FAR_max), then the main combustion stage fuel circuit is determined to meet the opening condition.

[0048] The thresholds wf0, wf1, FAR0, FAR1, wfmax, and FAR_max can be set according to the engine model, usage scenario, and other actual conditions. The values ​​of FAR and wf can be determined based on data measured by various measuring devices (e.g., sensors).

[0049] In one embodiment, the fuel flow rate wf is used as the criterion for the upcoming opening condition. Specifically, if wf is within the range of [wf0, wf1], the main combustion stage fuel circuit does not meet either the opening or closing condition. Therefore, it is determined that the main combustion stage fuel circuit meets the upcoming opening condition, and fuel pre-filling is required.

[0050] Otherwise, if wf is in the range of (0, wf0), then the main combustion stage fuel circuit is determined to meet the closing condition; if wf is in the range of (wf1, wfmax), then the main combustion stage fuel circuit is determined to meet the opening condition.

[0051] In one embodiment, the engine speed n is used as the criterion for the imminent opening condition. Specifically, if n is in the range (n0, n1), the main combustion stage fuel circuit does not meet either the opening or closing condition. In this case, the main combustion stage fuel circuit is determined to meet the imminent opening condition, and fuel prefilling is required.

[0052] Otherwise, if n is in the range (0, n0), then the main combustion stage fuel circuit is determined to meet the closing condition; if n is in the range (n1, n_max), then the main combustion stage fuel circuit is determined to meet the opening condition.

[0053] Step 202: Determine the fuel distribution ratio based on the operating parameters.

[0054] The fuel distribution ratio M is the proportion of fuel flow in each fuel line, which is also the proportion of fuel supplied to the combustion chamber. Similar to the criteria for determining the start-up condition, the operating parameters for determining the fuel distribution ratio can be selected according to actual conditions. For example, the fuel distribution ratio can be determined based on the air-fuel ratio FAR and the fuel flow rate wf, or based on the fuel flow rate wf, or based on the high-pressure shaft speed n.

[0055] The following example illustrates the process of determining the fuel distribution ratio, using the fuel-air ratio (FAR) and fuel flow rate (wf) as an example.

[0056] In one embodiment, the fuel distribution ratio between the two fuel lines is determined. Taking the determination of the fuel distribution ratio M between the pre-combustion stage main fuel line and the main combustion stage fuel line as an example, M = fuel flow rate of the main combustion stage fuel line / total fuel flow rate, which can be calculated according to, but is not limited to, the following formula:

[0057] Δwf=wf1-wf0;

[0058] ΔFAR=FAR1-FAR0;

[0059]

[0060] M = wf in / (wf+wf in );

[0061] Among them, wf in WF represents the pre-filled fuel flow rate within the EEC (elecronic engine control) timing cycle. inIf the value is less than the upper limit for fuel fluctuation, the upper limit for fuel step increment can be determined based on a fuel step test and used as the upper limit for fuel fluctuation. wf+wf in If the amount is less than the transient fuel supply limit, the transient fuel supply limit can be obtained through a fuel step test. out This represents the purging fuel flow rate caused by the pressure difference at the injection points of the main fuel line, and can be obtained through a purging test. ΔWF k ΔWF represents the total fuel flow increment during the k-th EEC calculation cycle. k = wf(tk) - wf(tk-1). ΔFAR k ΔFAR represents the increase in the oil-gas ratio during the k-th EEC calculation period. k = FAR(tk) - FAR(tk-1). tk represents the moment when the fuel flow rate wf reaches wf(tk), or FAR reaches FAR(tk), and is the moment of the k-th timing cycle. M MC This represents the total pre-filled fuel volume for each fuel line, which can be obtained through three-dimensional combustion chamber calculations or filling tests. ΔT represents the EEC timing cycle.

[0062] Therefore, under the condition of meeting the pre-filling criteria, the flow rate of the pre-filling pipeline entering and exiting within a unit time period can be calculated in real time to obtain the main combustion stage distribution ratio within this time period.

[0063] In one embodiment, the fuel distribution ratio is determined based on a preset fuel control curve. The fuel control curve is obtained by fitting historical engine operating data and / or experimental data. Different fuel control curves are generated depending on the fitting method.

[0064] Figure 3 A schematic diagram of a fuel control curve used in an engine fuel control method provided as an exemplary embodiment of the present invention is shown below. Figure 3 When it is determined that the engine's main combustion stage fuel circuit meets the conditions for opening, the fuel distribution ratio is determined according to curve A->B to achieve uniform speed control of the fuel flow in the main combustion stage fuel circuit. For example, when the engine's current wf = wf0 and FAR = FAR0, the ordinate of point A is determined as the fuel distribution ratio M; when the engine's current wf = wf1 and FAR = FAR1, the ordinate of point B is determined as the fuel distribution ratio M. When it is determined that the engine's main combustion stage fuel circuit meets the conditions for opening, the fuel distribution ratio is determined according to curve A->B->C; when it is determined that the engine's main combustion stage fuel circuit meets the conditions for closing, the fuel distribution ratio is determined according to curve C->D->A.

[0065] It should be noted that A->B in the curve indicates that the main combustion stage fuel circuit is about to be activated and pre-filled. Pre-filling actually activates the main combustion stage fuel circuit, but the pattern is calculated according to the formula. B->C in the curve is adjusted according to the main combustion stage proportional adjustment plan M=f(PS3,Tt3R,FAR).

[0066] After the main combustion stage oil circuit is opened, its adjustment plan can be obtained by interpolating the combustion chamber inlet static pressure PS3, the combustion chamber inlet converted total temperature Tt3R, and the air-fuel ratio FAR to obtain the corresponding main combustion stage ratio, that is, the main combustion stage ratio M = f(PS3, Tt3R, FAR). Based on this, the main combustion stage oil circuit is opened and the speed accuracy is guaranteed.

[0067] Figure 4 A schematic diagram of the fuel control curve used in another engine fuel control method provided as an exemplary embodiment of the present invention is shown below. Figure 4 When it is determined that the engine's main combustion stage fuel circuit meets the conditions for opening, the fuel distribution ratio is determined according to curve A->B to achieve non-uniform speed control of the fuel flow in the main combustion stage fuel circuit. For example, when the engine's current wf = wf0 and FAR = FAR0, the ordinate of point A is determined as the fuel distribution ratio M; when the engine's current wf = wf1 and FAR = FAR1, the ordinate of point B is determined as the fuel distribution ratio M. When it is determined that the engine's main combustion stage fuel circuit meets the conditions for opening, the fuel distribution ratio is determined according to curve A->B->C; when it is determined that the engine's main combustion stage fuel circuit meets the conditions for closing, the fuel distribution ratio is determined according to curve C->D->A.

[0068] In another embodiment, the fuel distribution ratio is determined by a fuel distribution ratio model, which can be obtained by training a neural network using historical engine operating data and / or experimental data as training samples. The specific training process of the model will not be described in detail here.

[0069] It should be noted that the fuel distribution ratio M in the fuel control curve can be the ratio of fuel flow from two fuel lines or the ratio of fuel flow from three fuel lines. This embodiment of the invention does not impose any particular limitation on this.

[0070] Step 203: Control the devices used to adjust fuel flow in the main combustion stage fuel line according to the fuel distribution ratio.

[0071] Understandably, once the fuel distribution ratio M is determined, the fuel flow rate of each fuel line can be calculated based on the total fuel demand of the combustion chamber. This allows for the calculation of the adjustment degree of the devices used to regulate the fuel flow rate, ensuring that the main combustion stage fuel line is filled with fuel before reaching the starting conditions. The fuel flow rate is determined based on the engine's operating parameters, thus preventing situations where there is no excess fuel in the fuel lines to participate in combustion in the combustion chamber, which could lead to fluctuations in engine speed.

[0072] For example, the fuel distribution ratio between the pre-combustion stage main fuel circuit and the main combustion stage fuel circuit is generally adjusted by a distribution valve. After calculating the fuel flow rates of the pre-combustion stage main fuel circuit and the main combustion stage fuel circuit, the corresponding opening degrees of the distribution valve for the pre-combustion stage main fuel circuit and the main combustion stage fuel circuit can be calculated based on the mapping relationship between the distribution valve opening and the fuel flow rate. The distribution valve is then adjusted according to these calculated opening degrees to achieve pre-fill control of the main combustion stage fuel circuit. Alternatively, the opening degrees of the distribution valve for the pre-combustion stage main fuel circuit and the main combustion stage fuel circuit can be directly calculated based on the fuel distribution ratio, and then the distribution valve is adjusted accordingly. In essence, this means adjusting only the fuel flow rate of the main combustion stage fuel circuit while keeping the fuel flow rate of the pre-combustion stage main fuel circuit constant.

[0073] The mapping relationship between the distribution valve opening and the fuel flow rate can be represented in the form of a list or in the form of a function. This embodiment of the invention does not impose any particular limitation on this.

[0074] The fuel distribution ratio between the pre-combustion stage auxiliary fuel circuit and the main combustion stage fuel circuit can be adjusted using nozzle valves. After calculating the fuel flow rates of the auxiliary and main combustion stage fuel circuits, the nozzle valve opening sizes for both circuits can be calculated based on the mapping relationship between nozzle valve opening sizes and fuel flow rates. Then, the nozzle valves for both circuits can be adjusted according to these calculated opening sizes to achieve pre-fill control of the main combustion stage fuel circuit. Alternatively, the nozzle valve opening sizes for both the pre-combustion stage main fuel circuit and the main combustion stage fuel circuit can be calculated directly based on the fuel distribution ratio, and then the nozzle valves can be adjusted accordingly. Essentially, this means adjusting only the nozzle valves of the main combustion stage fuel circuit while keeping the fuel flow rate of the pre-combustion stage auxiliary fuel circuit constant.

[0075] The mapping relationship between the nozzle valve opening size and the fuel flow rate can be represented in the form of a list or in the form of a function. This embodiment of the invention does not impose any particular limitation on this.

[0076] It should be noted that, Figure 2The fuel control process is illustrated using the control of the main combustion stage fuel circuit of the engine as an example. It can be understood that this fuel control method is also applicable to the pre-fill control of the pre-combustion stage auxiliary fuel circuit and the pre-fill control of the pre-combustion stage main fuel circuit. When performing pre-fill control of the pre-combustion stage auxiliary fuel circuit, step 201 determines whether the pre-combustion stage auxiliary fuel circuit meets the conditions for imminent opening. When performing pre-fill control of the pre-combustion stage main fuel circuit, step 201 determines whether the pre-combustion stage main fuel circuit meets the conditions for imminent opening.

[0077] Step 204: If the main combustion stage fuel circuit meets the opening conditions, open the main combustion stage fuel circuit.

[0078] In step 204, opening the main combustion stage fuel circuit can be achieved by, for example, opening the distribution valve of the main combustion stage fuel circuit to its maximum opening, or adjusting the opening of the distribution valve according to a pre-configured control strategy. Alternatively, opening the main combustion stage fuel circuit can be achieved by, for example, opening the nozzle valve of the main combustion stage fuel circuit to its maximum opening, or adjusting the opening of the nozzle valve according to a pre-configured control strategy.

[0079] Step 205: If the main combustion stage fuel circuit meets the shutdown conditions, shut down the main combustion stage fuel circuit.

[0080] In step 205, shutting down the main combustion stage fuel circuit can be done by, for example, by closing the distribution valve of the main combustion stage fuel circuit, and / or by closing the nozzle valve of the main combustion stage fuel circuit, and / or by shutting down the fuel pump.

[0081] The opening and closing conditions of the main combustion stage oil circuit are explained in the section on step 101 and will not be repeated here.

[0082] Therefore, before the main combustion stage fuel circuit is opened, that is, when it is determined that the main combustion stage fuel circuit is about to be opened, the fuel in the main combustion stage fuel circuit is pre-filled according to the engine operating parameters. This ensures that after the main combustion stage fuel circuit is determined to be opened, the fuel line is filled with fuel, which can participate in the combustion in the combustion chamber, thus preventing engine speed fluctuations.

[0083] Corresponding to the aforementioned engine control method embodiments, the present invention also provides embodiments of an engine control device.

[0084] Figure 5 A schematic diagram of a fuel control device for an engine, provided as an exemplary embodiment of the present invention, is shown. The engine includes a combustion chamber and at least two fuel lines, the at least two fuel lines being used to supply fuel to the combustion chamber; the control device includes:

[0085] The judgment module 51 is used to determine, based on the engine's operating parameters, whether there is at least one target oil circuit among the at least two oil circuits that meets the conditions for imminent opening.

[0086] The determining module 52 is used to determine the fuel distribution ratio based on the operating parameters when the judgment result is yes, wherein the fuel distribution ratio represents the fuel flow ratio of each fuel line;

[0087] The adjustment module 53 is used to control the device for adjusting the fuel flow rate on the target oil line according to the fuel distribution ratio, wherein the fuel flow rate of the target oil line that meets the condition for imminent opening is less than the fuel flow rate of the target oil line that meets the condition for opening.

[0088] Optionally, the engine's operating parameters include: fuel flow rate and air-fuel ratio; the judgment module is used to: determine that the target oil circuit meets the upcoming opening condition when the fuel flow rate and air-fuel ratio are within their respective threshold ranges;

[0089] Alternatively, the engine operating parameters include: engine speed; the judgment module is used to: determine that the target fuel circuit meets the upcoming opening condition when the fuel flow rate and engine speed are within a preset range.

[0090] Optionally, the determining module is used to:

[0091] The fuel distribution ratio is calculated based on fuel flow rate, fuel-air ratio, pre-filled fuel flow rate, purge fuel flow rate of the target fuel line, total fuel flow rate increment within the calculation period, fuel-air ratio increment within the calculation period, and total pre-filled fuel volume of the at least two fuel lines.

[0092] The pre-filled fuel flow rate is determined based on a fuel step test, the purge fuel flow rate is determined based on a purge test, and the total pre-filled fuel volume is obtained based on three-dimensional calculation of the combustion chamber or measurement of a filling test; the fuel flow rate, the fuel-air ratio, the total fuel flow rate increment within the calculation period, and the fuel-air ratio increment within the calculation period are obtained based on measurement data.

[0093] Optionally, the determining module is used to:

[0094] Based on the mapping relationship between operating parameters and fuel distribution ratio, determine the fuel distribution ratio corresponding to the current operating parameters.

[0095] For the device embodiments, since they basically correspond to the method embodiments, the relevant parts can be referred to in the description of the method embodiments. The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of the present invention according to actual needs. Those skilled in the art can understand and implement this without creative effort.

[0096] Figure 6 This is a schematic diagram of the structure of an electronic device according to an example embodiment of the present invention, showing a block diagram of an exemplary electronic device 60 suitable for implementing embodiments of the present invention. Figure 6 The electronic device 60 shown is merely an example and should not impose any limitations on the functionality and scope of use of the embodiments of the present invention.

[0097] like Figure 6 As shown, the electronic device 60 can be manifested as a general-purpose computing device, such as a server device. The components of the electronic device 60 may include, but are not limited to: at least one processor 61, at least one memory 62, and a bus 63 connecting different system components (including memory 62 and processor 61).

[0098] Bus 63 includes a data bus, an address bus, and a control bus.

[0099] The memory 62 may include volatile memory, such as random access memory (RAM) 621 and / or cache memory 622, and may further include read-only memory (ROM) 623.

[0100] The memory 62 may also include a program tool 625 (or utility) having a set (at least one) program module 624, including but not limited to: an operating system, one or more application programs, other program modules, and program data, each or some combination of these examples may include an implementation of a network environment.

[0101] The processor 61 performs various functional applications and data processing, such as the methods provided in any of the above embodiments, by running computer programs stored in the memory 62.

[0102] Electronic device 60 can also communicate with one or more external devices 64 (e.g., keyboard, pointing device, etc.). This communication can be performed via input / output (I / O) interface 65. Furthermore, the model-generated electronic device 60 can also communicate with one or more networks (e.g., local area network (LAN), wide area network (WAN), and / or public network, such as the Internet) via network adapter 66. As shown, network adapter 66 communicates with other modules of the model-generated electronic device 60 via bus 63. It should be understood that, although not shown in the figure, other hardware and / or software modules can be used in conjunction with the model-generated electronic device 60, including but not limited to: microcode, device drivers, redundant processors, external disk drive arrays, RAID (disk array) systems, tape drives, and data backup storage systems.

[0103] It should be noted that although several units / modules or sub-units / modules of the electronic device have been mentioned in the detailed description above, this division is merely exemplary and not mandatory. In fact, according to embodiments of the present invention, the features and functions of two or more units / modules described above can be embodied in one unit / module. Conversely, the features and functions of one unit / module described above can be further divided and embodied by multiple units / modules.

[0104] This invention also provides a computer-readable storage medium storing a computer program thereon, which, when executed by a processor, implements the method provided in any of the above embodiments.

[0105] While specific embodiments of the present invention have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of the present invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but all such changes and modifications fall within the scope of protection of the present invention.

Claims

1. A method for controlling an engine, characterized in that, The engine includes a combustion chamber and at least two fuel lines, the at least two fuel lines including a pre-combustion stage main fuel line and a main combustion stage fuel line, the fuel lines being used to supply fuel to the combustion chamber; The control method includes: Based on the engine's operating parameters, determine whether at least one of the at least two oil circuits meets the conditions for imminent opening; If the judgment result is yes, the fuel distribution ratio is determined according to the operating parameters. The fuel distribution ratio M is the fuel flow rate of the main combustion stage fuel circuit / the total fuel flow rate. The fuel distribution ratio M is calculated according to the following formula: Δwf = wf1 - wf0; ΔFAR = FAR1 - FAR0; ； M=wf in / (wf+wf in ); Where, if the fuel flow rate wf is within the range of [wf0, wf1] and the air-fuel ratio FAR is within the range of [FAR0, FAR1], it is determined that the main combustion stage fuel circuit meets the condition for imminent activation. tk is the time of the kth timing cycle, and wf in (tk) represents the pre-filled fuel flow rate during the k-th timing cycle, ΔWF k ΔFAR represents the total fuel flow increment during the k-th timing cycle. k M represents the increase in the oil-gas ratio during the k-th timing period. MC The total amount of pre-filled fuel for each fuel line, ΔT is the timing cycle, and wf out The purging fuel flow rate of the main combustion stage fuel circuit; The device used to adjust the fuel flow rate on the target oil line is controlled according to the fuel distribution ratio, wherein the fuel flow rate of the target oil line that meets the condition for imminent opening is less than the fuel flow rate of the target oil line that meets the opening condition.

2. The engine control method according to claim 1, characterized in that, The engine's operating parameters include: fuel flow rate and fuel-air ratio; determining whether at least one of the at least two fuel lines meets the condition for imminent opening includes: if the fuel flow rate and fuel-air ratio are within their respective threshold ranges, determining that the target fuel line meets the condition for imminent opening; Alternatively, the engine operating parameters include: engine speed; determining whether at least one of the at least two fuel lines meets the upcoming opening condition includes: determining that the target fuel line meets the upcoming opening condition when the fuel flow rate and engine speed are within a preset range.

3. The engine control method according to claim 1, characterized in that, Determining the fuel distribution ratio based on the operating parameters includes: The fuel distribution ratio is calculated based on fuel flow rate, fuel-air ratio, pre-filled fuel flow rate, purge fuel flow rate of the target fuel line, total fuel flow rate increment within the calculation period, fuel-air ratio increment within the calculation period, and total pre-filled fuel volume of the at least two fuel lines. The pre-filled fuel flow rate is determined based on a fuel step test, the purge fuel flow rate is determined based on a purge test, and the total pre-filled fuel volume is obtained based on three-dimensional calculation of the combustion chamber or measurement of a filling test; the fuel flow rate, the fuel-air ratio, the total fuel flow rate increment within the calculation period, and the fuel-air ratio increment within the calculation period are obtained based on measurement data.

4. The engine control method according to claim 1, characterized in that, Determining the fuel distribution ratio based on the operating parameters includes: Based on the mapping relationship between operating parameters and fuel distribution ratio, determine the fuel distribution ratio corresponding to the current operating parameters.

5. A control device for an engine, characterized in that, The engine includes a combustion chamber and at least two fuel lines, the at least two fuel lines including a pre-combustion stage main fuel line and a main combustion stage fuel line, the at least two fuel lines being used to supply fuel to the combustion chamber; The control device includes: The judgment module is used to determine, based on the engine's operating parameters, whether there is at least one target oil circuit among the at least two oil circuits that meets the conditions for imminent opening; The determining module is used to determine the fuel distribution ratio based on the operating parameters when the judgment result is yes. The fuel distribution ratio M is the fuel flow rate of the main combustion stage fuel circuit / the total fuel flow rate. The fuel distribution ratio M is calculated according to the following formula: Δwf = wf1 - wf0; ΔFAR = FAR1 - FAR0; ； M=wf in / (wf+wf in ); Where, if the fuel flow rate wf is within the range of [wf0, wf1] and the air-fuel ratio FAR is within the range of [FAR0, FAR1], it is determined that the main combustion stage fuel circuit meets the condition for imminent activation. tk is the time of the kth timing cycle, and wf in (tk) represents the pre-filled fuel flow rate during the k-th timing cycle, ΔWF k ΔFAR represents the total fuel flow increment during the k-th timing cycle. k M represents the increase in the oil-gas ratio during the k-th timing period. MC The total amount of pre-filled fuel for each fuel line, ΔT is the timing cycle, and wf out The purging fuel flow rate of the main combustion stage fuel circuit; An adjustment module is used to control a device on the target oil line that adjusts the fuel flow rate according to the fuel distribution ratio, wherein the fuel flow rate of the target oil line that meets the conditions for imminent opening is less than the fuel flow rate of the target oil line that meets the conditions for opening.

6. The engine control device according to claim 5, characterized in that, The engine's operating parameters include fuel flow rate and fuel-air ratio; the judgment module is used to determine, when the fuel flow rate and fuel-air ratio are within their respective threshold ranges, that the target fuel circuit meets the conditions for imminent opening. Alternatively, the engine operating parameters include: engine speed; the judgment module is used to: determine that the target fuel circuit meets the upcoming opening condition when the fuel flow rate and engine speed are within a preset range.

7. The engine control device according to claim 5, characterized in that, The determining module is used for: The fuel distribution ratio is calculated based on fuel flow rate, fuel-air ratio, pre-filled fuel flow rate, purge fuel flow rate of the target fuel line, total fuel flow rate increment within the calculation period, fuel-air ratio increment within the calculation period, and total pre-filled fuel volume of the at least two fuel lines. The pre-filled fuel flow rate is determined based on a fuel step test, the purge fuel flow rate is determined based on a purge test, and the total pre-filled fuel volume is obtained based on three-dimensional calculation of the combustion chamber or measurement of a filling test; the fuel flow rate, the fuel-air ratio, the total fuel flow rate increment within the calculation period, and the fuel-air ratio increment within the calculation period are obtained based on measurement data.

8. The engine control device according to claim 5, characterized in that, The determining module is used for: Based on the mapping relationship between operating parameters and fuel distribution ratio, determine the fuel distribution ratio corresponding to the current operating parameters.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the computer program, it implements the method of any one of claims 1 to 4.

10. A readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the method of any one of claims 1 to 4.

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