Extraction method for heat release rate of internal combustion engine, electronic equipment and storage medium

Abstract

The invention relates to a heat release rate extraction method of an internal combustion engine, electronic equipment and a storage medium, the internal combustion engine is internally provided with an oil sprayer, and the method comprises the following steps: constructing a simulation model, and classifying a plurality of oil beams sprayed by the oil sprayer; acquiring ignition sequences of different types of oil beams; based on the ignition sequence, the different types of oil beams are sequentially stripped in an inverted order, and a plurality of stripped oil beam heat release rate curves are obtained; and calculating the difference value of the heat release rate curves of the plurality of stripped oil beams, and obtaining the heat release rate curve of each type of oil beams. According to the extraction method, simulation is constructed, all fuel bunches are classified, all kinds of oil bunch injection actions are sequentially stripped in a simulation model, the asymmetric oil bunch heat release rate can be calculated through the closed-loop process of classification, sequencing, stripping and difference calculation, quantitative separation of multi-oil-bunch combustion characteristics is achieved, and the extraction efficiency is improved. And the heat release rate contribution of a single oil beam is accurately analyzed.

Description

Technical Field

[0001] The present invention belongs to the technical field of internal combustion engines, and relates to the fuel heat release rate of an internal combustion engine, and in particular to a heat release rate extraction method, electronic equipment and storage medium of an internal combustion engine. Background Art

[0002] At present, the clean fuels for internal combustion engines mainly use low-carbon and zero-carbon fuels such as methanol, ethanol, ammonia and hydrogen. These fuels are all low-activity fuels and cannot be directly compression-ignited on existing compression-ignition engines. They require the use of high-activity fuels such as diesel for ignition.

[0003] Traditional internal combustion engines use a separate dual-injector system, in which the pilot injector is placed on one side of the low-activity fuel injector. The differences in the spatial distribution of the high-temperature flame / gas / active atmosphere formed by diesel fuel result in different ignition delay periods for different oil beams of low-activity fuel, which in turn causes differences in the heat release rates of oil beams at different positions during the combustion process. However, the existing oil beam heat release rate analysis method is not suitable for asymmetric oil beams and suffers from large errors. Summary of the Invention

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and to provide a method, electronic device and storage medium for extracting the heat release rate of an internal combustion engine with simple steps and accurate calculations.

[0005] In order to solve the above problems, the technical solution of the present invention is:

[0006] A method for extracting the heat release rate of an internal combustion engine, wherein the internal combustion engine is provided with an injector, comprises the following steps:

[0007] Build a simulation model to classify several fuel jets sprayed by the injector;

[0008] Obtain the ignition sequence of different types of fuel beams;

[0009] Based on the ignition sequence, different types of oil beams are stripped in reverse order, and several heat release rate curves of the stripped oil beams are obtained;

[0010] The difference between the heat release rate curves of several stripped oil bundles is calculated to obtain the heat release rate curve of each type of oil bundle.

[0011] In a further embodiment, the injector includes a fuel injector and a pilot injector, and the fuel injector and the pilot injector are asymmetrically arranged on different axes.

[0012] In a further embodiment, a simulation model is constructed to classify a plurality of fuel streams sprayed by the injector, specifically including:

[0013] Build a simulation model based on the structure of internal combustion engine and injector;

[0014] Based on the injector structure and the spatial distribution characteristics of the oil beam, the oil beam is divided into several categories.

[0015] In a further embodiment, each category of oil bundles is identified.

[0016] In a further embodiment, obtaining the ignition sequence of different types of fuel beams specifically includes:

[0017] The ignition sequence of different types of fuel beams can be obtained by simulating ignition using a simulation model.

[0018] The ignition sequence of different types of fuel beams is recorded as:

[0019] O=[O1,O2,...,O M ];

[0020] Among them, O is the ignition sequence, O1 is the first fuel beam category that ignites the earliest, O2 is the second fuel beam category that ignites the earliest, and O M is the Mth fuel beam category that ignites the latest.

[0021] In a further embodiment, based on the ignition sequence, different types of oil beams are stripped in reverse order, and several heat release rate curves of the stripped oil beams are obtained, specifically including:

[0022] Get the reverse sequence based on the firing sequence:

[0023] O′=[O M ,O M-1 ,...,O1];

[0024] Among them, O' is the reverse sequence, O M is the Mth fuel beam category that ignites the latest, O M-1 It is the M-1th fuel beam category that ignites the latest, and O1 is the first fuel beam category that ignites the earliest.

[0025] In a further embodiment, based on the ignition sequence, different types of oil beams are stripped in reverse order, and a plurality of heat release rate curves of the stripped oil beams are obtained, further comprising:

[0026] Simulate the normal combustion process of all oil bundles to obtain the total heat release rate curve;

[0027] Perform a stripping operation. Based on the reverse sequence, strip the last ignited oil beam category among all the oil beams. Simulate the combustion process of the remaining oil beam categories to obtain the heat release rate curve after the stripping operation.

[0028] Perform secondary stripping. Based on the primary stripping, further strip the fuel beam category that ignites the next latest, simulate the combustion process of the remaining fuel beam categories, and obtain the heat release rate curve after the secondary stripping.

[0029] The stripping process is repeated until all oil bundle types are stripped, and several heat release rate curves of the stripped oil bundles are obtained.

[0030] In a further embodiment, the difference between the heat release rate curves of several stripped oil bundles is calculated to obtain the heat release rate of each type of oil bundle, which specifically includes:

[0031] Get the heat release rate curve of the last fuel beam to ignite:

[0032]

[0033] Where, is the heat release rate curve of the oil beam that ignites the latest; Q total is the total heat release rate curve; Q M is the heat release rate curve after one stripping;

[0034] Get the heat release rate curve of the oil beam that ignites the next night:

[0035]

[0036] Where, is the heat release rate curve of the oil beam that ignites the next night; Q M is the heat release rate curve after one stripping; Q M-1 is the heat release rate curve after secondary peeling;

[0037] Based on the heat release rate curve of the oil beam that ignited the next latest, a heat release rate curve of each type of oil beam is obtained.

[0038] An electronic device, comprising:

[0039] at least one processor;

[0040] a memory communicatively coupled to the at least one processor;

[0041] The memory stores instructions that can be executed by at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to:

[0042] Build a simulation model to classify several fuel jets sprayed by the injector;

[0043] Obtain the ignition sequence of different types of fuel beams;

[0044] Based on the ignition sequence, different types of oil beams are stripped in reverse order, and several heat release rate curves of the stripped oil beams are obtained;

[0045] The difference between the heat release rate curves of several stripped oil bundles is calculated to obtain the heat release rate curve of each type of oil bundle.

[0046] A storage medium is characterized in that it stores a computer program, which implements a method for extracting the heat release rate of an internal combustion engine when the computer program is executed by a processor.

[0047] Compared with the prior art, the present invention has the following beneficial effects:

[0048] 1. This extraction method classifies each fuel bundle by constructing a simulation, and sequentially strips off the injection actions of each type of fuel bundle in the simulation model. Through the closed-loop process of "classification → sequencing → stripping → difference calculation", it can calculate the asymmetric fuel bundle heat release rate, achieve quantitative separation of multiple fuel bundle combustion characteristics, and accurately analyze the heat release rate contribution of a single fuel bundle.

[0049] 2. This extraction method does not limit the number of oil bundles and can be applied to any multi-hole injectors such as 3-hole, 5-hole, and 7-hole, and is adapted to different cylinder diameters and combustion chamber structures; and the reverse stripping technology eliminates combustion interference between oil bundles, ensuring the reliability of single-bundle heat release rate extraction.

[0050] 3. This extraction method has engineering practicality and can optimize the nozzle layout based on the heat release rate data of a single fuel beam, providing a data basis for the design of injectors for multi-fuel beam engines. Moreover, through the analysis of the combustion characteristics of a single fuel beam, the efficiency of the multi-nozzle collaborative combustion can be improved, providing key data support for the development of combustion control strategies, such as fuel beam ignition sequence control, and emission performance optimization.

[0051] 4. This extraction method can decompose the complex multi-fuel bundle combustion process into quantifiable single-bundle heat release characteristics, establish a direct relationship between the spatial distribution of fuel bundles, ignition sequence and heat release characteristics, and provide a new path for the refined analysis of the engine combustion process.

[0052] 5. This extraction method classifies and identifies multiple oil bundles based on their spatial distribution characteristics, such as symmetry and relative position to the ignition source. Symmetrical oil bundles with the same combustion characteristics are grouped together, simplifying the analysis complexity and providing a basis for subsequent stripping simulations. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] Figure 1 is a flow chart of a method for extracting heat release rate of an internal combustion engine;

[0054] Figure 2 One of the oil beam schematic diagrams of a method for extracting the heat release rate of an internal combustion engine;

[0055] Figure 3 This is the second oil beam schematic diagram of a method for extracting the heat release rate of an internal combustion engine;

[0056] Figure 4 A schematic diagram of a combustion process for a method for extracting heat release rate of an internal combustion engine;

[0057] Figure 5A heat release rate line graph of a heat release rate extraction method for an internal combustion engine.

[0058] In the figure: 1. Fuel oil jet; 2. Pilot oil jet; 3. Pilot injector. DETAILED DESCRIPTION

[0059] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0060] Example 1:

[0061] A method for extracting heat release rate of an internal combustion engine, an electronic device and a storage medium, such as Figures 1 to 5 As shown, the internal combustion engine is equipped with a fuel injector and a pilot injector 3. The fuel injector is arranged on the axis of the internal combustion engine and is used to inject a low-activity fuel such as methanol. The pilot injector 3 is arranged on the side of the fuel injector and is used to inject a high-activity pilot fuel such as diesel. During the combustion process, the fuel injector sprays a plurality of fuel beams 1, and the pilot injector 3 sprays a plurality of pilot beams 2. Because the pilot beams 2 are located on one side of the fuel beam 1 and the two are arranged asymmetrically, the plurality of fuel beams 1 burn sequentially, forming a combustion sequence. Preferably, the proportion of the energy of the pilot fuel to the total energy is less than 10%.

[0062] The following steps are also included:

[0063] S101. Construct a simulation model to classify several fuel beams sprayed from the injector:

[0064] According to the structure of the internal combustion engine and the positions of the fuel injector and the pilot injector 3, a simulation model of the internal combustion engine is constructed on the simulation software, and the simulation model is used to simulate the multiple fuel oil beams 1 and the multiple pilot oil beams 2 sprayed by the fuel injector and the pilot injector 3.

[0065] Based on the structures of the fuel injectors and the pilot injectors 3, and the spatial distribution characteristics of the fuel bundles 1 and the pilot injectors 2, such as symmetry and relative positions to the pilot injectors 3, the fuel bundles 1 are divided into several categories, each category containing at least one fuel bundle 1, and each category of the fuel bundle 1 is uniquely represented, such as Figure 3 As shown, in this embodiment, a plurality of fuel oil bundles 1 are divided into a type A oil bundle, a type B oil bundle, a type C oil bundle and a type D oil bundle.

[0066] S103. Obtain the ignition sequence of different types of fuel beams:

[0067] The actual ignition sequence of several types of fuel beams 1 is determined through experiments or simulation analysis, such as high-speed photography, in-cylinder temperature or pressure monitoring, chemical reaction kinetics simulation, etc., and the actual ignition sequence is recorded as a sequential sequence:

[0068] O=[O1,O2,...,O M ];

[0069] Where O is the ignition sequence, O1 is the first fuel oil bundle category that ignites the earliest, O2 is the second fuel oil bundle category that ignites the earliest, and O M is the Mth fuel bundle category that ignites last, and M is the total number of fuel bundle categories.

[0070] S105. Based on the ignition sequence, different types of oil beams are stripped in reverse order, and several heat release rate curves of the stripped oil beams are obtained:

[0071] Based on the firing sequence O, get the reverse sequence:

[0072] O′=[O M ,O M-1 , ..., O1];

[0073] In the formula, O' is the reverse sequence, O M is the fuel oil bundle category that ignites the latest at M, O M-1 is the M-1th fuel oil bundle category that ignites the latest, O1 is the first fuel oil bundle category that ignites the earliest, and M is the total number of fuel oil bundle categories.

[0074] Several types of fuel beams are sequentially stripped according to the reverse sequence O′. That is, the corresponding types of fuel beams are sequentially set not to be injected in the simulation model, and an engine combustion simulation is performed to obtain heat release rate curves of the fuel beam 1 under different stripping states.

[0075] First, perform the initial state simulation, that is, simulate the combustion process of all fuel oil beams 1 injected normally, and obtain the total heat release rate curve Q total ;

[0076] Then perform the first stripping, stripping the fuel oil bundle category O that ignites the latest M , that is, set the fuel oil beam type not to be injected, and then simulate the combustion process of the remaining fuel oil beam 1 to obtain the stripped fuel oil beam type O M The heat release rate curve Q M ;

[0077] On the basis of the first stripping, the second stripping is carried out to further strip the fuel oil bundle category O that ignites the next night. M-1 , then simulate the combustion process of the remaining fuel oil bundle 1 to obtain the stripped fuel oil bundle category O M and O M-1 The secondary heat release rate curve Q M-1 ;

[0078] Based on the first stripping and the second stripping, the above stripping process is repeated until all the categories of the fuel oil bundle 1 are stripped, and the stripping sequence Q is obtained. M , Q M-1 , ..., Q1, where Q1 is the heat release rate curve when only the earliest ignited fuel oil beam category O1 is retained.

[0079] S107. Calculate the difference between the heat release rate curves of several stripped oil beams to obtain the heat release rate curve of each type of oil beam:

[0080] Based on the difference in heat release rate curves under various stripping states, the heat release rate characteristics of the corresponding fuel beam category are calculated:

[0081] For the last fuel bundle to ignite, category O M , and its heat release rate curve is

[0082] For the fuel oil bundle category O that ignites the next night M-1 , and its heat release rate curve is

[0083] Similarly, for the i-th burning fuel oil beam category, its heat release rate is in is the heat release rate curve of the i-th burning fuel oil beam category, Q i+1 is the heat release rate curve of the i+1 type fuel oil bundle, Q i is the heat release rate curve of stripping the i-th type fuel oil bundle.

[0084] The present invention also provides a computer device, comprising a processor component: including at least one processor; a storage component: including a memory; program instructions: a computer program stored in the memory; the processor component is configured to read and execute the program instructions in the storage unit to implement steps S101 to S107.

[0085] The present invention provides a computer program product, including computer executable instructions. When the instructions are executed on a processor of an electronic device, the electronic device can execute steps S101 to S107.

[0086] The present invention also provides a computer-readable storage medium storing computer program instructions, wherein the storage medium includes: a non-volatile memory (such as a solid-state drive, a flash memory) or a temporary storage medium (such as a memory cache). The computer-readable storage medium stores an independent product, and the product implements steps S101 to S107 in the form of a software functional unit. The technical solution of the present invention is essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute steps S101 to S107. The aforementioned storage medium includes but is not limited to semiconductor memory (such as ROM, RAM, Flash), magnetic storage media (such as hard disks, tapes), optical storage media (such as CDs, DVDs) and other physical storage devices that can carry program codes (such as USB flash drives, mobile hard disks, etc.).

[0087] The present invention also provides an information data processing terminal, which is used to provide a user input interface to implement steps S101 to S107 in the above method embodiment when executed on an electronic device. The information data processing terminal is not limited to mobile phones, computers, and switches.

[0088] The present invention also provides a method for extracting the heat release rate of an internal combustion engine, comprising: a computing cluster: comprising multiple processor nodes, each node being configured with at least one multi-core processor; a distributed storage system: for storing three-dimensional point cloud maps and training data set storage as well as required computer programs; a network communication interface: configured to receive real-time image streams transmitted by a drone terminal; a memory database: caching intermediate data of the invention implementation process; wherein the computing cluster executes the computer program to implement steps S101 to S107.

[0089] The present invention has carried out the following test based on the above content:

[0090] A light-duty engine model was constructed for numerical simulation. The prototype engine's common operating conditions (2200 rpm, 0.8 MPa IMEP) were used. The simulation setup is shown in Table 1. The engine model includes a fuel injector and a pilot injector 3. The fuel injector is located in the center of the cylinder, while the pilot injector 3 is offset to the side of the cylinder head. The "offset distance" represents the linear distance between the fuel and pilot injectors 3. In this example, methanol is used as the fuel and diesel as the pilot fuel. The methanol substitution ratio is 95%, meaning the calorific value of methanol fuel accounts for 95% of the total calorific value of combustion, while the calorific value of diesel fuel accounts for 5%. The injection duration is 1.5 CAD.

[0091] Table 1 Simulation model data settings

[0092]

[0093]

[0094] like Figure 4 As shown, the entire ignition and combustion process in the engine cylinder is simulated to obtain in-cylinder pressure and heat release rate curves for the entire fuel jet combustion. To better visualize the in-cylinder ignition and combustion process, spatial cloud maps of the in-cylinder temperature and spray are also displayed. The red color represents the temperature isosurface at 2000K, demonstrating the ignition process, while the yellow color represents the isosurface of the methanol spray with a mass fraction of 0.1, showing the methanol spray profile.

[0095] like Figure 4 As shown in the figure, diesel is injected into the cylinder at -20 CAD ATDC and spontaneously ignites at -15 CAD ATDC, forming a small exothermic peak. Because the diesel injector is offset to one side of the cylinder, the high-temperature flame formed by the diesel combustion is also biased to one side of the cylinder. Methanol is injected into the cylinder at -6 CAD ATDC. At -5 CAD ATDC, a portion of the methanol fuel bundle, known as the Class C fuel bundle, is ignited by the diesel flame. At -4 CAD ATDC, a portion of the methanol fuel bundle, known as the Class B fuel bundle, is ignited by the diesel flame. At -2 CAD ATDC, a portion of the methanol fuel bundle, known as the Class A fuel bundle, is ignited by the diesel flame. At 0 CAD ATDC, the last portion of the methanol fuel bundle, known as the Class D fuel bundle, is ignited by the diesel flame. Because the high-temperature diesel flame is formed on one side of the cylinder, the interaction between the methanol oil beams sprayed from the methanol injector and the high-temperature diesel flame is different. The methanol oil beams are ignited in a certain order and are not ignited until they are all near the top dead center, i.e., 0CAD ATDC. After all the methanol oil beams are ignited, as the methanol fuel is continuously injected into the cylinder, the entire methanol is diffusely burned and eventually burns out.

[0096] like Figure 5As shown in the figure, the heat release curve of methanol is split. Since the seven methanol spray beams are symmetrical along the axis of "methanol injector-diesel injector", the ignition and combustion processes of the corresponding two symmetrical methanol spray beams should be the same. Therefore, according to the different heat release conditions of each methanol spray beam, the seven methanol spray beams are divided into four categories, marked as A, B, C and D from left to right, among which the symmetrical fuel oil beam 1 is classified into the same category. Figure 3 As shown. Figure 4 From the analysis, we know that the ignition order of each methanol spray beam is C, B, A, and D. Therefore, by stripping the injection action of the corresponding methanol spray beam in reverse order to perform engine simulation, the contribution of each methanol spray beam to the total heat release rate is the difference in heat release rate between the corresponding spray beam and whether it is injected, so as to extract the heat release characteristics of each methanol spray beam. For example, first, by stripping the injection action of methanol spray beam D in the numerical engine, we simulate the heat release curve of the lack of spray beam D, and by subtracting the heat release curve of the original engine, we can get the heat release curve characteristics of methanol spray beam D. Then, we further strip the injection action of methanol spray beam A, simulate the heat release curves of the lack of spray beams D and A, and then subtract the heat release curve simulated in the previous step to get the heat release curve characteristics of methanol spray beam A. By analogy, we can get the heat release characteristics of each type of methanol spray beam, such as Figure 5 As shown, the difference area of ​​each heat release rate curve represents the heat release of each methanol spray.

[0097] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A method for extracting the heat release rate of an internal combustion engine, wherein the internal combustion engine is provided with an injector, characterized in that: The following steps are involved: A simulation model is constructed to classify a plurality of fuel beams sprayed by the fuel injector; Obtain the ignition sequence of different types of fuel beams; Based on the ignition sequence, the different types of oil beams are stripped in reverse order, and a plurality of heat release rate curves of the stripped oil beams are obtained; The difference between the heat release rate curves of several stripped oil bundles is calculated to obtain the heat release rate curve of each type of oil bundle.

2. The method for extracting the heat release rate of an internal combustion engine according to claim 1, wherein: The injector comprises a fuel injector and a pilot injector, and the fuel injector and the pilot injector are arranged asymmetrically on different axes.

3. The method for extracting the heat release rate of an internal combustion engine according to claim 1, wherein: The construction of the simulation model to classify the multiple oil beams sprayed by the injector specifically includes: Constructing the simulation model based on the structures of the internal combustion engine and the injector; The oil beams are divided into several categories based on the injector structure and the spatial distribution characteristics of the oil beams.

4. The method for extracting the heat release rate of an internal combustion engine according to claim 3, wherein: Each category of oil bundle is identified.

5. The method for extracting the heat release rate of an internal combustion engine according to claim 3, wherein: The obtaining of the ignition sequence of different types of fuel beams specifically includes: Performing simulated ignition using the simulation model to obtain the ignition sequence of different types of fuel beams; The ignition sequence of the different types of fuel beams is recorded as: O=[O1,O2,...,O M ]; Among them, O is the ignition sequence, O1 is the first fuel beam category that ignites the earliest, O2 is the second fuel beam category that ignites the earliest, and O M is the Mth fuel beam category that ignites the latest.

6. The method for extracting the heat release rate of an internal combustion engine according to claim 5, wherein: The step of stripping the different types of oil beams in reverse order based on the ignition sequence and obtaining heat release rate curves of several oil beams after stripping specifically includes: Get the reverse sequence based on the firing sequence: O′=[O M ,O M-1 ,...,O1]; Among them, O' is the reverse sequence, O M is the Mth fuel beam category that ignites the latest, O M-1 It is the M-1th fuel beam category that ignites the latest, and O1 is the first fuel beam category that ignites the earliest.

7. The method for extracting the heat release rate of an internal combustion engine according to claim 6, wherein: The step of stripping the different types of oil beams in reverse order based on the ignition sequence and obtaining a plurality of heat release rate curves of the oil beams after stripping further includes: Simulate the normal combustion process of all oil bundles to obtain the total heat release rate curve; Performing a stripping operation, based on the reverse sequence, stripping the latest ignited oil beam category from all oil beams, simulating the combustion process of the remaining oil beam categories, and obtaining a heat release rate curve after the stripping operation; Performing secondary stripping, based on the primary stripping, further stripping the oil beam category that ignited the next latest, simulating the combustion process of the remaining oil beam categories, and obtaining a heat release rate curve after the secondary stripping; The stripping process is repeated until all oil bundle types are stripped, and several heat release rate curves of the stripped oil bundles are obtained.

8. The method for extracting the heat release rate of an internal combustion engine according to claim 7, wherein: The calculation of the difference between the heat release rate curves of the plurality of stripped oil bundles to obtain the heat release rate of each type of oil bundle specifically includes: Get the heat release rate curve of the last fuel beam to ignite: Where, is the heat release rate curve of the oil beam that ignites the latest; Q total is the total heat release rate curve; Q M is the heat release rate curve after one stripping; Get the heat release rate curve of the oil beam that ignites the next night: Where, is the heat release rate curve of the oil beam that ignites the next night; Q M is the heat release rate curve after one stripping; Q M-1 is the heat release rate curve after secondary peeling; Based on the heat release rate curve of the oil beam that ignites next later, a heat release rate curve of each type of oil beam is obtained.

9. An electronic device, characterized in that: include: at least one processor; a memory communicatively coupled to the at least one processor; The memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to: A simulation model is constructed to classify a plurality of fuel beams sprayed by the fuel injector; Obtain the ignition sequence of different types of fuel beams; Based on the ignition sequence, the different types of oil beams are stripped in reverse order, and a plurality of heat release rate curves of the stripped oil beams are obtained; The difference between the heat release rate curves of several stripped oil bundles is calculated to obtain the heat release rate curve of each type of oil bundle.

10. A storage medium, characterized in that: A computer program is stored, and when the computer program is executed by a processor, the heat release rate extraction method of the internal combustion engine according to any one of claims 1 to 8 is implemented.

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