Internal combustion engine combustion optimization control method and device, equipment, storage medium

Abstract

The application provides an internal combustion engine combustion optimization control method and device, equipment and storage medium, and belongs to the technical field of internal combustion engine control. The method comprises the following steps: in response to the change rate of an external load being greater than a preset change rate threshold, determining the total adjustment power of a fuel power generation system based on the change rate of the external load; for each power generator, if the power difference value of the power generator is greater than a preset deviation threshold, adjusting the main fuel injection advance angle and the fuel injection total amount mapping coefficient of the internal combustion engine corresponding to the power generator based on the power difference value of the power generator; determining the score corresponding to the power generator based on the power difference value, the power generation efficiency and the adjustable power of the power generator; and controlling each internal combustion engine in the fuel power generation system based on the total adjustment power, the scores corresponding to the power generators, the main fuel injection advance angles and the fuel injection total amount mapping coefficients of the internal combustion engines corresponding to the power generators, so as to realize combustion optimization of the internal combustion engines corresponding to the power generators.

Description

Technical Field

[0001] This application belongs to the field of internal combustion engine control technology, and more specifically, relates to an internal combustion engine combustion optimization control method, device, equipment, and storage medium. Background Technology

[0002] Oil-fired power generation systems typically employ multiple internal combustion engines connected in parallel to form a power supply unit, providing power to external loads in scenarios such as industrial production and emergency response, making them important power supply security equipment.

[0003] In actual operation, external loads often experience sudden and significant changes. When the rate of load change exceeds the normal range, the power generation system needs to quickly adjust its output to match the load demand. However, existing control schemes for multi-unit parallel fuel-fired power generation systems are mostly focused on overall power regulation and speed maintenance, failing to achieve coordinated control for sudden load changes. Therefore, when the load fluctuates drastically, the adjustments of each unit lack rationality, causing the internal combustion engine to be unable to adapt to changes in operating conditions and achieve stable combustion, easily leading to incomplete combustion and low combustion efficiency. Summary of the Invention

[0004] The purpose of this application is to provide a combustion optimization control method, device, equipment, and storage medium for internal combustion engines, so as to achieve combustion optimization for internal combustion engines corresponding to various generators.

[0005] A first aspect of this application provides an internal combustion engine combustion optimization control method, applied to an internal combustion engine controller in a fuel-fired power generation system. The fuel-fired power generation system further includes multiple generators and an internal combustion engine corresponding to each generator. The internal combustion engine controller is used to control each internal combustion engine in the fuel-fired power generation system. The fuel-fired power generation system is used to supply power to an external load using the energy output from each internal combustion engine. The control method includes: In response to an external load change rate exceeding a preset change rate threshold, the total adjustment power for the fuel-fired power generation system is determined based on the change in external load, and the power difference, adjustable power, and power generation efficiency of each generator are obtained; wherein, the power difference of each generator is the difference between the current set power and the current output power of that generator. For each generator, if the power difference of the generator is greater than the preset deviation threshold, the main injection advance angle and total injection mapping coefficient of the internal combustion engine corresponding to the generator are adjusted based on the power difference of the generator; the score corresponding to the generator is determined based on the power difference, power generation efficiency and adjustable power; where the total injection mapping coefficient refers to the mapping coefficient between the set power of the generator and the total injection. Based on the total adjusted power, the scores corresponding to each generator, the main injection advance angle of the internal combustion engine corresponding to each generator, and the total injection mapping coefficient, the internal combustion engines in the fuel-fired power generation system are controlled to achieve combustion optimization of the internal combustion engines corresponding to each generator.

[0006] A second aspect of this application provides an internal combustion engine combustion optimization control device, applied to an internal combustion engine controller in a fuel-fired power generation system. The fuel-fired power generation system further includes multiple generators and an internal combustion engine corresponding to each generator. The internal combustion engine controller is used to control each internal combustion engine in the fuel-fired power generation system. The fuel-fired power generation system is used to supply power to an external load using the energy output from each internal combustion engine. The control device includes: The data acquisition module is used to respond to the change rate of the external load being greater than a preset change rate threshold, determine the total adjustment power for the fuel-fired power generation system based on the change in the external load, and acquire the power difference, adjustable power and power generation efficiency of each generator; wherein, the power difference of each generator is the difference between the current set power and the current output power of that generator. The internal combustion engine adjustment module is used to adjust the main injection advance angle and total injection mapping coefficient of the internal combustion engine corresponding to the generator based on the power difference of the generator if the power difference of the generator is greater than the preset deviation threshold; and to determine the score of the generator based on the power difference, power generation efficiency and adjustable power; wherein, the total injection mapping coefficient refers to the mapping coefficient between the set power of the generator and the total injection. The internal combustion engine control module is used to control each internal combustion engine in the fuel-fired power generation system based on the total adjusted power, the score corresponding to each generator, the main injection advance angle of the internal combustion engine corresponding to each generator, and the total injection mapping coefficient, so as to achieve combustion optimization of the internal combustion engine corresponding to each generator.

[0007] A third aspect of this application provides an electronic device, including a memory, a processor, and a computer program stored in the memory and running on the processor, wherein the processor executes the computer program to implement the steps of the above-described internal combustion engine combustion optimization control method.

[0008] In a fourth aspect of this application, a computer-readable storage medium is provided, which stores a computer program that, when executed by a processor, implements the steps of the above-described internal combustion engine combustion optimization control method.

[0009] The beneficial effects of the internal combustion engine combustion optimization control method, apparatus, equipment, and storage medium provided in this application embodiment are as follows: This application embodiment determines the total adjustment power based on the load change rate when the external load change rate exceeds a threshold, and simultaneously acquires the power difference, adjustable power, and power generation efficiency of each generator. This can match the power adjustment needs of sudden load changes and avoid the problem of blind adjustment in existing technologies. Secondly, for generators whose power difference exceeds the deviation threshold, this application embodiment adjusts the main injection advance angle and the total injection mapping coefficient based on the power difference. This allows the internal combustion engine injection parameters to be adapted to the power deviation, improving the adaptability of combustion and power adjustment and reducing incomplete combustion. At the same time, a score is determined by combining the power difference, power generation efficiency, and adjustable power. Based on the total adjustment power, score, and injection parameters, each internal combustion engine is controlled collaboratively to achieve reasonable adjustment under multi-engine parallel operation, ensuring stable combustion of the internal combustion engines to adapt to changes in operating conditions. Attached Figure Description

[0010] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0011] Figure 1 A schematic flowchart of an internal combustion engine combustion optimization control method provided in an embodiment of this application; Figure 2 This is a structural block diagram of an internal combustion engine combustion optimization control device provided in an embodiment of this application; Figure 3 This is a schematic block diagram of an electronic device provided in an embodiment of this application. Detailed Implementation

[0012] In the following description, specific details such as particular system architectures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of this application. However, those skilled in the art will understand that this application may also be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods have been omitted so as not to obscure the description of this application with unnecessary detail.

[0013] To make the objectives, technical solutions, and advantages of this application clearer, the following description will be provided in conjunction with the accompanying drawings and specific embodiments.

[0014] In this embodiment of the application, an internal combustion engine combustion optimization control method is provided. This method is applied to the internal combustion engine controller in a fuel-fired power generation system. The fuel-fired power generation system also includes multiple generators and an internal combustion engine corresponding to each generator. The internal combustion engine controller is used to control each internal combustion engine in the fuel-fired power generation system. The fuel-fired power generation system is used to supply power to external loads using the energy output from each internal combustion engine.

[0015] Please refer to Figure 1 , Figure 1 This is a flowchart illustrating an embodiment of an internal combustion engine combustion optimization control method provided in this application. The method may include: S101-S103.

[0016] S101: In response to the external load change rate being greater than a preset change rate threshold, determine the total adjustment power for the fuel-fired power generation system based on the change in external load, and obtain the power difference, adjustable power and power generation efficiency of each generator.

[0017] In this embodiment, the external load is the power supply target of the fuel-fired power generation system, i.e., the total power demand of various electrical devices / networks. Its power changes directly affect the operating load of the power generation system and the combustion state of the internal combustion engine. The rate of change of the external load refers to the amount of power change in the external load per unit time, used to reflect the drastic degree of load change. The preset rate of change threshold can be set based on experience. When the rate of change of the external load exceeds the preset rate of change threshold, conventional control strategies cannot adapt quickly; therefore, targeted combustion optimization control needs to be initiated to avoid deterioration of combustion performance.

[0018] In this embodiment, for each generator: the power difference refers to the difference between the generator's current set power and its current output power, reflecting the degree of power output deviation of a single generator. It is a core indicator for determining whether the internal combustion engine's combustion state deviates from the optimal range and whether fuel injection parameters need adjustment. Adjustable power refers to the range of power that the generator can safely and stably adjust under the current operating conditions, i.e., the maximum power that can be increased or decreased. When the total adjustable power is positive, the adjustable power refers to the generator's maximum increase power; when the total adjustable power is negative, the adjustable power refers to the generator's maximum decrease power (generally referring to the current operating power, i.e., the power that can be in standby mode). Power generation efficiency refers to the efficiency with which the generator converts the mechanical energy input to the corresponding internal combustion engine into electrical energy.

[0019] In one embodiment, the change in the power of the external load can be determined as the total adjustment power for the fuel-fired power generation system. In this embodiment, the change in the power of the external load is equal to the changed load power minus the current load power, with the sign retained.

[0020] S102: For each generator, if the power difference of the generator is greater than the preset deviation threshold, the main injection advance angle and total injection mapping coefficient of the internal combustion engine corresponding to the generator are adjusted based on the power difference of the generator; the score corresponding to the generator is determined based on the power difference of the generator, the power generation efficiency and the adjustable power.

[0021] In this embodiment, the preset deviation threshold can be set based on experience to determine whether the power deviation of a single generator has affected combustion performance. When the power difference exceeds the preset deviation threshold, the fuel injection parameters of a single internal combustion engine are adjusted. The main injection advance angle refers to the angle between the moment the injector begins injecting fuel and the moment the piston reaches top dead center in the internal combustion engine fuel injection system. The total fuel injection mapping coefficient is the mapping coefficient between the generator's set power and the total fuel injection, used to calculate the required total fuel injection based on the target set power.

[0022] In one embodiment, adjusting the main injection advance angle and total injection mapping coefficient of the internal combustion engine corresponding to the generator based on the power difference of the generator includes: The direction of adjustment of the main injection advance angle and the direction of adjustment of the total injection mapping coefficient of the internal combustion engine corresponding to the generator are determined based on the sign of the power difference of the generator. The adjustment amount of the main injection advance angle and the adjustment amount of the total injection mapping coefficient of the internal combustion engine corresponding to the generator are determined based on the absolute value of the power difference of the generator; wherein, the absolute value of the power difference of the generator is positively correlated with the adjustment amount of the main injection advance angle and the adjustment amount of the total injection of the internal combustion engine corresponding to the generator. The main injection advance angle of the internal combustion engine corresponding to the generator is adjusted based on the adjustment direction and adjustment amount; the total injection mapping coefficient of the internal combustion engine corresponding to the generator is adjusted based on the adjustment direction and adjustment amount.

[0023] In this embodiment, the adjustment direction of the main injection advance angle refers to the timing adjustment trend of the internal combustion engine injection start point relative to the piston's top dead center, which can be divided into two categories: advance (injection timing moved forward) and delay (injection timing moved backward). The adjustment direction of the total injection mapping coefficient refers to the adjustment trend of the mapping ratio between the generator set power and the total injection of the internal combustion engine, which can be divided into two categories: increase and decrease.

[0024] In this embodiment, it refers to a monotonically increasing mapping relationship between the absolute value of the power difference and the adjustment amount of the main injection advance angle and the adjustment amount of the total injection mapping coefficient: the larger the power deviation amplitude, the larger the adjustment range of the corresponding control parameters.

[0025] In this embodiment, if the power difference of the generator is positive, the adjustment direction of the main injection advance angle of the internal combustion engine is determined to be advance, and the adjustment direction of the total injection mapping coefficient is determined to be increase. If the power difference of the generator is negative, then the adjustment direction of the main injection advance angle of the internal combustion engine is determined to be delayed, and the adjustment direction of the total injection mapping coefficient is determined to be reduced.

[0026] In this embodiment, if the power difference of the generator is positive, it indicates insufficient generator output. Essentially, this is due to a delayed combustion phase and insufficient fuel supply in the internal combustion engine, resulting in insufficient work capacity. Adjusting the main injection advance angle forward optimizes the combustion phase and improves heat-to-work conversion efficiency; adjusting the total injection mapping coefficient increases the fuel supply and increases the total energy input of combustion. These two parameters work together to directionally increase the output power of the internal combustion engine, causing the actual generator output power to converge towards the set power.

[0027] If the power difference of the generator is negative, it indicates that the generator output is excessive. This is essentially due to an early combustion phase and / or an excessive fuel supply, resulting in excess work capacity. Adjusting the main injection advance angle to a later position weakens combustion intensity and reduces power output; adjusting the total injection mapping coefficient to a lower position reduces fuel supply and total combustion energy input. These two parameters work together to directionally reduce the internal combustion engine output power, causing the generator's actual output power to converge towards the set power.

[0028] In one embodiment of this application, the adjustment amount of the main injection advance angle of the internal combustion engine corresponding to the generator can be determined based on the absolute value of the power difference of the generator and a pre-established linear relationship. Similarly, the adjustment amount of the total injection mapping coefficient of the internal combustion engine corresponding to the generator can also be determined based on the absolute value of the power difference of the generator and another pre-established linear relationship. The slope and intercept of the linear relationship can be determined based on experience or multiple experiments. The adjustment amount of both the main injection advance angle and the total injection mapping coefficient are positively correlated with the absolute value of the power difference of the generator, and each of the adjustment amounts of the main injection advance angle and the total injection mapping coefficient has an upper limit adjustment amount.

[0029] In this embodiment, if the power difference of the generator is less than or equal to the preset deviation threshold, there is no need to adjust the main injection advance angle and total injection mapping coefficient of the internal combustion engine corresponding to the generator; the original values ​​can be maintained.

[0030] S103: Based on the total adjusted power, the scores corresponding to each generator, the main injection advance angle of the internal combustion engine corresponding to each generator, and the total injection mapping coefficient, the internal combustion engines in the fuel-fired power generation system are controlled to achieve combustion optimization of the internal combustion engines corresponding to each generator.

[0031] In this embodiment, the total adjustment power is used as the global adjustment constraint, the generator score is used as the allocation priority basis, and the adjusted fuel injection parameters are used as the single-machine execution benchmark to control each internal combustion engine in the fuel-fired power generation system, so as to achieve combustion optimization of the internal combustion engine corresponding to each generator.

[0032] Specifically, the total adjustment power is used to limit the total power regulation that the entire system needs to complete, ensuring that the overall target of multi-unit coordinated regulation matches the demand for sudden load changes and avoiding over- or under-regulation. Secondly, the order in which each unit participates in power regulation is determined based on its score, prioritizing units with small deviations, high efficiency, and strong regulation capabilities to undertake power regulation tasks, achieving optimal allocation of system-level regulation resources. Finally, the main injection advance angle and total injection mapping coefficient adjusted for power deviation are used as the underlying execution parameters for each internal combustion engine, ensuring that the combustion phase and fuel supply are in optimal matching state when each unit undertakes the corresponding regulation power.

[0033] As can be seen from the above, the embodiments of this application, by determining the total adjustment power based on the load change rate when the external load change rate exceeds a threshold, and simultaneously acquiring the power difference, adjustable power, and power generation efficiency of each generator, can match the power adjustment requirements of sudden load changes, avoiding the problem of blind adjustment in existing technologies. Secondly, for generators whose power difference exceeds the deviation threshold, the embodiments of this application adjust the main injection advance angle and the total injection mapping coefficient based on the power difference, which can make the internal combustion engine injection parameters match the power deviation, improve the adaptability of combustion and power adjustment, and reduce incomplete combustion. At the same time, a score is determined by combining the power difference, power generation efficiency, and adjustable power, and each internal combustion engine is controlled collaboratively based on the total adjustment power, score, and injection parameters to achieve reasonable adjustment under multi-engine parallel operation, so that the internal combustion engine adapts to changes in operating conditions and maintains stable combustion.

[0034] In one embodiment of this application, the control of each internal combustion engine in the fuel-fired power generation system is based on the total adjustment power, the score corresponding to each generator, the main injection advance angle of the internal combustion engine corresponding to each generator, and the total injection mapping coefficient, including: The following power allocation operation is executed repeatedly: Select one generator from all unassigned target power generators in the fuel-fired power generation system as the generator to be adjusted, in descending order of score; If the power to be adjusted is greater than or equal to the adjustable power of the generator to be adjusted, then the target set power is allocated to the generator to be adjusted based on the adjustable power of the generator to be adjusted; wherein, the power to be adjusted is the difference between the total adjusted power and the allocated target set power; If the power to be adjusted is less than the adjustable power of the generator to be adjusted, then the target set power is allocated to the generator to be adjusted based on the power to be adjusted. The power allocation operation described above is repeated until the allocated target set power is not less than the total adjustment power, thus obtaining the target control scheme; the target control scheme contains at least one generator to be adjusted and the target set power corresponding to each generator to be adjusted; The internal combustion engines corresponding to each generator to be adjusted are controlled based on the main injection advance angle, total injection mapping coefficient, and target set power, and the control of the internal combustion engines corresponding to the remaining generators is maintained.

[0035] In this embodiment, the generator to be adjusted refers to the unit that is preferentially selected in a single round of power allocation and will receive the target set power, and is the execution target of the power adjustment in the current round. The power to be adjusted refers to the remaining power adjustment amount that has not yet been allocated, which is the dynamic difference between the total adjusted power and the allocated target set power, and is a quantitative constraint condition for this round of power allocation. The allocated target set power refers to the cumulative value of the target set power allocated in each round, used to characterize the execution progress of power allocation. The target set power refers to the final power set value allocated to a single generator to be adjusted, which is the power command benchmark for the subsequent combustion control of the internal combustion engine corresponding to that generator. The target control scheme refers to the complete set of control commands formed after the cyclic allocation terminates, including a list of generators to be adjusted participating in the adjustment and the target set power corresponding to each generator. The remaining generators refer to generators that are not included in the power adjustment range and do not require changes to their operating conditions; they belong to non-regulating units.

[0036] In this embodiment, the unit with the best overall performance is selected first to undertake the power regulation task. While ensuring the regulation response speed, the system power generation efficiency is maximized and the power deviation is minimized, so as to achieve the global optimal allocation of regulation resources.

[0037] The differential allocation is based on the relative magnitude of the power to be adjusted and the adjustable power of the generator: if the power to be adjusted is greater than or equal to the adjustable power, the power is allocated at full capacity according to the maximum adjustable capacity of the unit, making full use of the unit's adjustment margin; if the power to be adjusted is less than the adjustable power, the power is allocated precisely according to the remaining amount to be allocated, avoiding excessive power adjustment. This rule strictly constrains the allocation amplitude to ensure that the adjustment amount of a single unit does not exceed its own adjustable range, thereby improving control safety and stability.

[0038] In one embodiment, the internal combustion engine corresponding to each generator to be adjusted is controlled based on the main injection advance angle, total injection mapping coefficient, and target set power of the internal combustion engine corresponding to each generator to be adjusted, including: For each internal combustion engine corresponding to the generator to be adjusted: The total fuel injection quantity of the internal combustion engine is determined based on the total fuel injection quantity mapping coefficient of the internal combustion engine and the target set power of the generator to be adjusted; the internal combustion engine is controlled based on the main fuel injection advance angle and the total fuel injection quantity.

[0039] In this embodiment, the internal combustion engine corresponding to the generator to be adjusted refers to the internal combustion engine that has been included in the power regulation range after cyclic power distribution and needs to execute the target power command and combustion parameter optimization. For each internal combustion engine corresponding to the generator to be adjusted, if the internal combustion engine has undergone adjustment of the main injection advance angle and the total injection mapping coefficient, then subsequent control is performed according to the adjusted main injection advance angle and the total injection mapping coefficient. If the internal combustion engine has not undergone adjustment of the main injection advance angle and the total injection mapping coefficient, then subsequent control is performed according to the original main injection advance angle and the total injection mapping coefficient of the internal combustion engine.

[0040] In this embodiment, the total fuel injection amount of the internal combustion engine can be determined by multiplying the total fuel injection amount of the internal combustion engine by the target set power of the generator to be adjusted. Subsequently, the main injection advance angle is responsible for optimizing the combustion sequence and heat release law, and the total fuel injection amount is responsible for matching the energy input required for the target power. The two work together to adapt the internal combustion engine combustion process to the target set power, thereby optimizing the combustion process of the single engine while completing the system power adjustment task.

[0041] As can be seen from the above, the embodiments of this application adopt a method of cyclically allocating power according to the generator score from high to low, and prioritize selecting the unit with the best overall performance to undertake the regulation task. This can achieve the global optimal configuration of regulation resources, which can improve the power response speed and reduce the power deviation of the unit. By differentiating the power to be adjusted and the adjustable power, the regulation amplitude of a single unit is limited, which can avoid over-regulation and improve the safety and stability of system operation. At the same time, by combining the corrected main injection advance angle and the total injection mapping coefficient, the total injection volume corresponding to the target power is matched, which can optimize the combustion timing and energy input, and solve the defects of incomplete combustion and low efficiency of internal combustion engine under load fluctuation.

[0042] In one embodiment of this application, the rating corresponding to the generator is determined based on the generator's power difference, power generation efficiency, and adjustable power, including: The error score is determined based on the power difference of the generator; An efficiency score is determined based on the generator's power generation efficiency. The adjustable score is determined based on the adjustable power of the generator; The error score, efficiency score, and adjustability score are weighted and calculated to obtain the corresponding score for the generator.

[0043] In this embodiment, the determination process for error score, efficiency score, and adjustable score can be based on their respective mapping tables. Taking the mapping table between power generation efficiency and efficiency score as an example, refer to Table 1, which is a mapping table between power generation efficiency and efficiency score provided in this application embodiment. The data in Table 1 is only an example, and relevant personnel can set it according to their preferences.

[0044]

[0045] In this embodiment, the larger the absolute value of the power difference of the generator, the lower the error score; the higher the power generation efficiency, the higher the efficiency score; and the larger the adjustable power, the higher the adjustable score. The error score, efficiency score, and adjustable score can all range from 0 to 100.

[0046] In one embodiment, the weights corresponding to the error score, efficiency score, and adjustability score are determined based on the following method: The weights corresponding to the adjustable score are determined based on the total adjustment power and the preset positive correlation; the weights corresponding to the error score and efficiency score are determined based on the weights corresponding to the adjustable score.

[0047] In this embodiment, the larger the total adjustment power, the more drastic the external load change, and the more urgent the system's demand for the unit's power regulation capability. Therefore, it is necessary to increase the weight of the adjustable score, strengthen the evaluation priority of the unit's regulation margin, and ensure the responsiveness and adjustment space of power regulation. The smaller the total adjustment power, the smoother the load fluctuation, the lower the dependence on regulation capability, and the correspondingly smaller the weight of the adjustable score.

[0048] In this embodiment, a formula for a preset positive correlation is provided: ,in, This indicates the weight corresponding to the adjustable score. This represents the baseline weight corresponding to the adjustable score, for example, it can be 0.3. This represents the saturation coefficient, a preset nonlinear adjustment coefficient used to control the saturation rate at which the weight increases with the total adjustment power. The larger the value, the faster the weight corresponding to the adjustable score approaches saturation. In this embodiment... The value is 3. Indicates the total adjustment power. This represents the maximum adjustable power, which is the sum of the adjustable power of all generators in the current fuel-fired power generation system. It is a natural constant.

[0049] In this embodiment, the sum of the weights corresponding to the adjustable score, the error score, and the efficiency score is 1. Once the weights corresponding to the adjustable score are determined, the weights corresponding to the error score and the efficiency score can be set to the same value to ensure that the sum of the weights is 1.

[0050] As can be seen from the above, the embodiments of this application adaptively determine the adjustable score weight based on the total adjustment power. The more severe the load change, the higher the adjustment capability weight. It can adapt to different load fluctuation intensities, prioritize meeting the power response requirements under severe changes, achieve accurate matching between unit evaluation and load conditions, realize internal combustion engine combustion optimization, and improve adjustment efficiency and operational stability.

[0051] Corresponding to the internal combustion engine combustion optimization control method in the above embodiments, Figure 2 This is a structural block diagram of an internal combustion engine combustion optimization control device provided according to an embodiment of this application. For ease of explanation, only the parts relevant to the embodiment of this application are shown. References Figure 2 The internal combustion engine combustion optimization control device 20 is applied to the internal combustion engine controller in the fuel power generation system. The fuel power generation system also includes multiple generators and an internal combustion engine corresponding to each generator. The internal combustion engine controller is used to control each internal combustion engine in the fuel power generation system. The fuel power generation system is used to supply power to external loads using the energy output by each internal combustion engine. The control device 20 includes: a data acquisition module 21, an internal combustion engine adjustment module 22, and an internal combustion engine control module 23. The data acquisition module 21 is used to respond to the change rate of the external load being greater than a preset change rate threshold, determine the total adjustment power for the fuel-fired power generation system based on the change in the external load, and acquire the power difference, adjustable power and power generation efficiency of each generator; wherein the power difference of each generator is the difference between the current set power and the current output power of the generator. The internal combustion engine adjustment module 22 is used to adjust the main injection advance angle and total injection mapping coefficient of the internal combustion engine corresponding to the generator based on the power difference of the generator if the power difference of the generator is greater than the preset deviation threshold; and to determine the score corresponding to the generator based on the power difference, power generation efficiency and adjustable power of the generator; wherein, the total injection mapping coefficient refers to the mapping coefficient between the set power of the generator and the total injection. The internal combustion engine control module 23 is used to control each internal combustion engine in the fuel power generation system based on the total adjusted power, the score corresponding to each generator, the main injection advance angle of the internal combustion engine corresponding to each generator, and the total injection mapping coefficient, so as to achieve combustion optimization of the internal combustion engine corresponding to each generator.

[0052] In one embodiment of this application, the internal combustion engine control module 23 is specifically used to cyclically execute the following power distribution operation: Select one generator from all unassigned target power generators in the fuel-fired power generation system as the generator to be adjusted, in descending order of score; If the power to be adjusted is greater than or equal to the adjustable power of the generator to be adjusted, then the target set power is allocated to the generator to be adjusted based on the adjustable power of the generator to be adjusted; wherein, the power to be adjusted is the difference between the total adjusted power and the allocated target set power; If the power to be adjusted is less than the adjustable power of the generator to be adjusted, then the target set power is allocated to the generator to be adjusted based on the power to be adjusted. The power allocation operation described above is repeated until the allocated target set power is not less than the total adjustment power, thus obtaining the target control scheme; the target control scheme contains at least one generator to be adjusted and the target set power corresponding to each generator to be adjusted; The internal combustion engines corresponding to each generator to be adjusted are controlled based on the main injection advance angle, total injection mapping coefficient, and target set power, and the control of the internal combustion engines corresponding to the remaining generators is maintained.

[0053] In one embodiment of this application, the internal combustion engine control module 23 is further configured to target the internal combustion engine corresponding to each generator to be adjusted: The total fuel injection volume of the internal combustion engine is determined based on the total fuel injection volume mapping coefficient of the internal combustion engine and the target set power of the generator to be adjusted. The internal combustion engine is controlled based on its main injection advance angle and total injection volume.

[0054] In one embodiment of this application, the internal combustion engine adjustment module 22 is specifically used to determine the adjustment direction of the main injection advance angle and the adjustment direction of the total injection mapping coefficient of the internal combustion engine corresponding to the generator based on the sign of the power difference of the generator. The adjustment amount of the main injection advance angle and the adjustment amount of the total injection mapping coefficient of the internal combustion engine corresponding to the generator are determined based on the absolute value of the power difference of the generator; wherein, the absolute value of the power difference of the generator is positively correlated with the adjustment amount of the main injection advance angle and the adjustment amount of the total injection of the internal combustion engine corresponding to the generator. The main injection advance angle of the internal combustion engine corresponding to the generator is adjusted based on the adjustment direction and adjustment amount; the total injection mapping coefficient of the internal combustion engine corresponding to the generator is adjusted based on the adjustment direction and adjustment amount.

[0055] In one embodiment of this application, the internal combustion engine adjustment module 22 is further configured to determine the adjustment direction of the main injection advance angle of the internal combustion engine as advance and the adjustment direction of the total injection mapping coefficient as increase if the power difference of the generator is positive. If the power difference of the generator is negative, then the adjustment direction of the main injection advance angle of the internal combustion engine is determined to be delayed, and the adjustment direction of the total injection mapping coefficient is determined to be reduced.

[0056] In one embodiment of this application, the internal combustion engine adjustment module 22 is further configured to determine an error score based on the power difference of the generator; An efficiency score is determined based on the generator's power generation efficiency. The adjustable score is determined based on the adjustable power of the generator; The error score, efficiency score, and adjustability score are weighted and calculated to obtain the corresponding score for the generator.

[0057] In one embodiment of this application, the internal combustion engine combustion optimization control device 20 further includes a weight determination module, which is used to determine the weight corresponding to the adjustable score based on the total adjustment power and a preset positive correlation; and to determine the weights corresponding to the error score and the efficiency score based on the weights corresponding to the adjustable score.

[0058] See Figure 3 , Figure 3 This is a schematic block diagram of an electronic device provided according to an embodiment of this application. Figure 3 The electronic device 300 in this embodiment may include one or more processors 301, one or more input devices 302, one or more output devices 303, and one or more memories 304. The processors 301, input devices 302, output devices 303, and memories 304 communicate with each other via a communication bus 305. The memories 304 store computer programs, including program instructions. The processors 301 execute the program instructions stored in the memories 304. Specifically, the processors 301 are configured to invoke the program instructions to perform the functions of each module / unit in the above-described device embodiments, for example... Figure 2 The functions of the data acquisition module 21, the internal combustion engine adjustment module 22, and the internal combustion engine control module 23 are shown.

[0059] It should be understood that, in the embodiments of this application, the processor 301 may be a central processing unit (CPU), but it may also be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor.

[0060] Input device 302 may include a touchpad, a fingerprint sensor (for collecting the user's fingerprint information and fingerprint orientation information), a microphone, etc., and output device 303 may include a display (LCD, etc.), a speaker, etc.

[0061] The memory 304 may include read-only memory and random access memory, and provides instructions and data to the processor 301. A portion of the memory 304 may also include non-volatile random access memory. For example, the memory 304 may also store device type information.

[0062] In specific implementations, the processor 301, input device 302, and output device 303 described in the embodiments of this application can execute the implementation method described in the internal combustion engine combustion optimization control method provided in the embodiments of this application, or they can execute the implementation method of the electronic device described in the embodiments of this application, which will not be repeated here.

[0063] In another embodiment of this application, a computer-readable storage medium is provided. This computer-readable storage medium stores a computer program, which includes program instructions. When executed by a processor, the program instructions implement all or part of the processes in the methods described above. Alternatively, the computer program can instruct related hardware to complete the process. The computer program can be stored in a computer-readable storage medium, and when executed by a processor, it can implement the steps of the various method embodiments described above. The computer program includes computer program code, which can be in the form of source code, object code, executable files, or certain intermediate forms. The computer-readable medium can include any entity or device capable of carrying computer program code, a recording medium, a USB flash drive, a portable hard drive, a magnetic disk, an optical disk, a computer memory, a read-only memory (ROM), a random access memory (RAM), an electrical carrier signal, a telecommunication signal, and a software distribution medium, etc.

[0064] The computer-readable storage medium can be an internal storage unit of the electronic device in any of the foregoing embodiments, such as a hard disk or memory of the electronic device. The computer-readable storage medium can also be an external storage device of the electronic device, such as a plug-in hard disk, smart media card (SMC), secure digital card (SD), flash card, etc., equipped on the electronic device. Furthermore, the computer-readable storage medium can include both internal and external storage units of the electronic device. The computer-readable storage medium is used to store computer programs and other programs and data required by the electronic device. The computer-readable storage medium can also be used to temporarily store data that has been output or will be output.

[0065] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the components and steps of the various examples have been generally described in terms of functionality in the foregoing description. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementations should not be considered beyond the scope of this application.

[0066] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working process of the electronic devices and units described above can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0067] In the several embodiments provided in this application, it should be understood that the disclosed electronic devices and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be indirect coupling or communication connection through some interfaces or units, or it may be an electrical, mechanical, or other form of connection.

[0068] The units described as separate components may or may not be physically separate. 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 units can be selected to achieve the purpose of the embodiments of this application, depending on actual needs.

[0069] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0070] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, data stored, data displayed, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of the relevant data must comply with the relevant laws, regulations and standards of the relevant countries and regions.

[0071] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A method for optimizing combustion control of an internal combustion engine, characterized in that, An internal combustion engine controller is applied to an internal combustion engine power generation system, wherein the power generation system further includes multiple generators and an internal combustion engine corresponding to each generator. The internal combustion engine controller is used to control each internal combustion engine in the power generation system, wherein the power generation system is used to supply power to an external load using the energy output from each internal combustion engine. The control method includes: In response to an external load change rate exceeding a preset change rate threshold, the total adjustment power for the fuel-fired power generation system is determined based on the change in the external load, and the power difference, adjustable power, and power generation efficiency of each generator are obtained; wherein, the power difference of each generator is the difference between the current set power and the current output power of that generator. For each generator, if the power difference of the generator is greater than the preset deviation threshold, the main injection advance angle and total injection mapping coefficient of the internal combustion engine corresponding to the generator are adjusted based on the power difference of the generator; the score corresponding to the generator is determined based on the power difference, power generation efficiency and adjustable power; wherein, the total injection mapping coefficient refers to the mapping coefficient between the set power of the generator and the total injection. Based on the total adjusted power, the scores corresponding to each generator, the main injection advance angle of the internal combustion engine corresponding to each generator, and the total injection mapping coefficient, the internal combustion engines in the fuel power generation system are controlled to achieve combustion optimization of the internal combustion engines corresponding to each generator.

2. The internal combustion engine combustion optimization control method as described in claim 1, characterized in that, The control of each internal combustion engine in the fuel-powered generator system based on the total adjusted power, the score corresponding to each generator, the main injection advance angle of the internal combustion engine corresponding to each generator, and the total injection mapping coefficient includes: The following power allocation operation is executed repeatedly: Select one generator from all generators with unassigned target power in the fuel-fired power generation system according to the order of scores from high to low as the generator to be adjusted; If the power to be adjusted is greater than or equal to the adjustable power of the generator to be adjusted, then a target set power is allocated to the generator to be adjusted based on the adjustable power of the generator to be adjusted; wherein, the power to be adjusted is the difference between the total adjustment power and the allocated target set power; If the power to be adjusted is less than the adjustable power of the generator to be adjusted, then the target set power is allocated to the generator to be adjusted based on the power to be adjusted. The power allocation operation described above is repeated until the allocated target set power is not less than the total adjustment power, thus obtaining the target control scheme; the target control scheme contains at least one generator to be adjusted and the target set power corresponding to each generator to be adjusted; The internal combustion engines corresponding to each generator to be adjusted are controlled based on the main injection advance angle, total injection mapping coefficient, and target set power of each generator to be adjusted, and the control of the internal combustion engines corresponding to the remaining generators is maintained.

3. The internal combustion engine combustion optimization control method as described in claim 2, characterized in that, The control of the internal combustion engine corresponding to each generator to be adjusted, based on the main injection advance angle, total injection mapping coefficient, and target set power of the internal combustion engine corresponding to each generator to be adjusted, includes: For each internal combustion engine corresponding to the generator to be adjusted: The total fuel injection volume of the internal combustion engine is determined based on the total fuel injection volume mapping coefficient of the internal combustion engine and the target set power of the generator to be adjusted. The internal combustion engine is controlled based on its main injection advance angle and the total injection volume.

4. The internal combustion engine combustion optimization control method as described in claim 1, characterized in that, The adjustment of the main injection advance angle and total injection mapping coefficient of the internal combustion engine corresponding to the generator based on the power difference of the generator includes: The direction of adjustment of the main injection advance angle and the direction of adjustment of the total injection mapping coefficient of the internal combustion engine corresponding to the generator are determined based on the sign of the power difference of the generator. The adjustment amount of the main injection advance angle and the adjustment amount of the total injection mapping coefficient of the internal combustion engine corresponding to the generator are determined based on the absolute value of the power difference of the generator; wherein, the absolute value of the power difference of the generator is positively correlated with the adjustment amount of the main injection advance angle and the adjustment amount of the total injection of the internal combustion engine corresponding to the generator. The main injection advance angle of the internal combustion engine corresponding to the generator is adjusted based on the adjustment direction and adjustment amount; the total injection mapping coefficient of the internal combustion engine corresponding to the generator is adjusted based on the adjustment direction and adjustment amount.

5. The internal combustion engine combustion optimization control method as described in claim 4, characterized in that, The method of determining the adjustment direction of the main injection advance angle and the adjustment direction of the total injection mapping coefficient of the internal combustion engine corresponding to the generator based on the sign of the power difference of the generator includes: If the power difference of the generator is positive, then the adjustment direction of the main injection advance angle of the internal combustion engine is determined to be advance, and the adjustment direction of the total injection mapping coefficient is determined to be increase. If the power difference of the generator is negative, then the adjustment direction of the main injection advance angle of the internal combustion engine is determined to be delayed, and the adjustment direction of the total injection mapping coefficient is determined to be reduced.

6. The internal combustion engine combustion optimization control method as described in claim 1, characterized in that, The process of determining the generator's score based on its power difference, power generation efficiency, and adjustable power includes: The error score is determined based on the power difference of the generator; An efficiency score is determined based on the generator's power generation efficiency. The adjustable score is determined based on the adjustable power of the generator; The error score, efficiency score, and adjustable score are weighted and calculated to obtain the score corresponding to the generator.

7. The internal combustion engine combustion optimization control method as described in claim 6, characterized in that, The weights corresponding to the error score, the efficiency score, and the adjustable score are determined based on the following method: The weight corresponding to the adjustable score is determined based on the total adjustment power and the preset positive correlation. The weights corresponding to the error score and the efficiency score are determined based on the weights corresponding to the adjustable score.

8. A combustion optimization control device for an internal combustion engine, characterized in that, An internal combustion engine controller is applied to an internal combustion engine power generation system, wherein the system further includes multiple generators and an internal combustion engine corresponding to each generator. The controller controls each internal combustion engine in the system, which uses the energy output from the engines to supply power to an external load. The control device includes: The data acquisition module is used to respond to the change rate of the external load being greater than a preset change rate threshold, determine the total adjustment power for the fuel-fired power generation system based on the change in the external load, and acquire the power difference, adjustable power and power generation efficiency of each generator; wherein, the power difference of each generator is the difference between the current set power and the current output power of the generator. The internal combustion engine adjustment module is used to adjust the main injection advance angle and total injection mapping coefficient of the internal combustion engine corresponding to the generator based on the power difference of the generator if the power difference of the generator is greater than a preset deviation threshold; and to determine the score of the generator based on the power difference, power generation efficiency and adjustable power; wherein, the total injection mapping coefficient refers to the mapping coefficient between the set power of the generator and the total injection. The internal combustion engine control module is used to control each internal combustion engine in the fuel power generation system based on the total adjusted power, the score corresponding to each generator, the main injection advance angle of the internal combustion engine corresponding to each generator, and the total injection mapping coefficient, so as to achieve combustion optimization of the internal combustion engine corresponding to each generator.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and running on the processor, characterized in that, When the processor executes the computer program, it implements the steps of the method as described in any one of claims 1 to 7.

10. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by a processor, it implements the steps of the method as described in any one of claims 1 to 7.

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