Method and device for calculating fuel partial pressure value, terminal equipment and computer medium

Abstract

The application discloses a fuel partial pressure value calculation method, device, terminal equipment and computer medium, and relates to the technical field of vehicles. The fuel partial pressure value calculation method comprises the following steps: determining an initial first fuel proportion corresponding to first fuel; obtaining a fuel ratio correction coefficient table, and correcting the initial first fuel proportion based on the fuel ratio correction coefficient table to determine a target first fuel proportion; detecting each first fuel parameter value corresponding to the first fuel, and calculating a first partial pressure proportion corresponding to the first fuel based on the target first fuel proportion and the each first fuel parameter value; calculating an excess air coefficient and a mixed steam pressure value corresponding to mixed fuel, and calculating a first fuel partial pressure value corresponding to the first fuel according to the first partial pressure proportion, the excess air coefficient and the mixed steam pressure value. The application can more accurately calculate the fuel partial pressure value of each fuel in the mixed fuel.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicles, in particular to a fuel partial pressure value calculation method and device, a terminal device and a computer readable storage medium. BACKGROUND

[0002] Since the air-fuel ratios of the methanol fuel and the gasoline fuel in the mixed fuel are different, during the process of injecting the mixed fuel in the methanol engine in the new energy vehicle, the methanol engine needs to inject more methanol fuel to ensure that the mixed fuel can be fully combusted; thus, it is easy to occur that the actual space occupied by the methanol fuel in the cylinder of the methanol engine is more than the calculated space, so that the methanol engine cannot accurately calculate the fuel partial pressure value corresponding to the methanol fuel and adjust the intake air amount based on the fuel partial pressure value.

[0003] Therefore, how to more accurately calculate the fuel partial pressure value corresponding to each fuel in the mixed fuel when the methanol engine injects the mixed fuel has become a technical problem urgently to be solved in the industry. SUMMARY

[0004] The main purpose of the present application is to provide a fuel partial pressure value calculation method and device, a terminal device and a computer readable storage medium, which can enable the air flow calculation model to more accurately calculate the fuel partial pressure value corresponding to each fuel in the mixed fuel when the methanol engine injects the mixed fuel, thereby improving the torque accuracy of the methanol engine and the control robustness of the methanol engine.

[0005] To achieve the above purpose, the present application provides a fuel partial pressure value calculation method, which comprises the following steps:

[0006] determining an initial first fuel ratio corresponding to a first fuel, wherein the initial first fuel ratio is the percentage of the first fuel in the mixed fuel;

[0007] obtaining a fuel ratio correction coefficient table and correcting the initial first fuel ratio based on the fuel ratio correction coefficient table to determine a target first fuel ratio;

[0008] detecting each first fuel parameter value corresponding to the first fuel, and calculating a first partial pressure ratio corresponding to the first fuel based on the target first fuel ratio and each first fuel parameter value;

[0009] calculating an excess air coefficient and a mixed steam pressure value corresponding to the mixed fuel, and calculating a first fuel partial pressure value corresponding to the first fuel according to the first partial pressure ratio, the excess air coefficient and the mixed steam pressure value.

[0010] Further, the fuel ratio correction coefficient table comprises each standard first fuel ratio and a correction first fuel ratio corresponding to each standard first fuel ratio;

[0011] The step of correcting the initial first fuel ratio based on the fuel ratio correction coefficient table to determine a target first fuel ratio comprises:

[0012] Querying the fuel ratio correction coefficient table based on the initial first fuel ratio to determine a target fuel ratio corresponding to the initial first fuel ratio;

[0013] Determining a target first fuel ratio corresponding to the target fuel ratio.

[0014] Further, the step of calculating the excess air coefficient and the mixed steam pressure value corresponding to the mixed fuel comprises:

[0015] Detecting the oxygen content and the carbon-hydrogen ratio value corresponding to the mixed fuel;

[0016] Calculating the excess air coefficient corresponding to the mixed fuel based on the oxygen content and the carbon-hydrogen ratio value.

[0017] Further, the step of calculating the excess air coefficient and the mixed steam pressure value corresponding to the mixed fuel further comprises:

[0018] Detecting the absolute pressure value, the cylinder exhaust pressure value and the cylinder back pressure value in the cylinder of the methanol engine;

[0019] Calculating the mixed steam pressure value corresponding to the mixed fuel based on the absolute pressure value, the cylinder exhaust pressure value and the cylinder back pressure value.

[0020] Further, after the step of calculating the first fuel partial pressure value corresponding to the first fuel based on the first partial pressure ratio, the excess air coefficient and the mixed steam pressure value, the method further comprises:

[0021] Determining an air flow coefficient corresponding to the air in the cylinder, and calculating a pressure charge conversion coefficient in the cylinder based on the air flow coefficient and the target first fuel ratio;

[0022] Calculating the air charge corresponding to the first fuel based on the pressure charge conversion coefficient and the first fuel partial pressure value.

[0023] Further, the step of determining the air flow coefficient corresponding to the air in the cylinder comprises:

[0024] detect a real-time temperature value corresponding to air in the cylinder, and convert the real-time temperature value into a thermodynamic temperature value;

[0025] detect an engine cylinder parameter corresponding to the cylinder, and determine an air damping coefficient corresponding to the engine cylinder parameter based on a preset air flow correction table;

[0026] calculate an air flow coefficient corresponding to the air according to the thermodynamic temperature value and the air damping coefficient.

[0027] Further, the engine cylinder parameter includes a valve overlap angle value and an engine speed value, and the step of determining the air damping coefficient corresponding to the engine cylinder parameter based on the preset air flow correction table comprises:

[0028] query the preset air flow correction table based on the valve overlap angle value to determine a target valve overlap angle consistent with the valve overlap angle value among each standard valve overlap angle included in the air flow correction table;

[0029] query the air flow correction table based on the engine speed value to determine a target engine speed consistent with the engine speed value among each standard engine speed included in the air flow correction table;

[0030] determine a target coefficient corresponding to the target valve overlap angle and the target engine speed among each standard coefficient included in the air flow correction table, and determine the target coefficient as the air damping coefficient corresponding to the engine cylinder parameter.

[0031] In addition, to achieve the above object, the application further provides a fuel partial pressure value calculation device, which comprises:

[0032] a proportion detection module configured to determine an initial first fuel proportion corresponding to a first fuel, wherein the initial first fuel proportion is a percentage of the first fuel in a mixed fuel;

[0033] a coefficient correction module configured to obtain a fuel ratio correction coefficient table, and correct the initial first fuel proportion based on the fuel ratio correction coefficient table to determine a target first fuel proportion;

[0034] a proportion calculation module configured to detect each first fuel parameter value corresponding to the first fuel, and calculate a first partial pressure proportion corresponding to the first fuel based on the target first fuel proportion and each first fuel parameter value;

[0035] The partial pressure calculation module is configured to calculate an excess air coefficient and a mixed steam pressure value corresponding to the mixed fuel, and calculate a first fuel partial pressure value corresponding to the first fuel according to the first partial pressure ratio, the excess air coefficient and the mixed steam pressure value.

[0036] In addition, to achieve the above object, the present application further provides a terminal device, comprising a memory and a processor, wherein the memory stores a fuel partial pressure value calculation program executable on the processor, and the fuel partial pressure value calculation program implements the steps of the fuel partial pressure value calculation method when executed by the processor.

[0037] In addition, to achieve the above object, the present application further provides a computer readable storage medium, wherein the computer readable storage medium stores a fuel partial pressure value calculation program, and the fuel partial pressure value calculation program implements the steps of the fuel partial pressure value calculation method when executed by a processor.

[0038] The fuel partial pressure value calculation method, device, terminal device and computer medium provided by the embodiments of the present application determine an initial first fuel ratio corresponding to the first fuel, wherein the initial first fuel ratio is the percentage of the first fuel in the mixed fuel; obtain a fuel ratio correction coefficient table and correct the initial first fuel ratio based on the fuel ratio correction coefficient table to determine a target first fuel ratio; detect each first fuel parameter value corresponding to the first fuel, and calculate a first partial pressure ratio corresponding to the first fuel based on the target first fuel ratio and each first fuel parameter value; calculate an excess air coefficient and a mixed steam pressure value corresponding to the mixed fuel, and calculate a first fuel partial pressure value corresponding to the first fuel according to the first partial pressure ratio, the excess air coefficient and the mixed steam pressure value.

[0039] In the embodiment, when the terminal device needs to calculate the fuel partial pressure corresponding to the methanol fuel contained in the mixed fuel, the electronic control unit is first called to detect the mixed fuel injected by the methanol engine, so as to determine the initial first fuel proportion corresponding to the methanol fuel in the mixed fuel. Meanwhile, the electronic control unit reads the storage device to obtain the fuel ratio correction coefficient table stored by the technician in advance, and corrects the initial first fuel proportion based on the fuel ratio correction coefficient table to determine the target first fuel proportion. Then, the electronic control unit calls the detection unit to detect the mixed fuel, so as to obtain the first fuel parameters such as molar mass, volume temperature and the like corresponding to the mixed fuel, and inputs the obtained first fuel parameters and the target first fuel proportion into the preset air flow calculation model. The air flow calculation model calculates the first partial pressure proportion corresponding to the methanol fuel in the mixed fuel based on the target first fuel proportion and the first fuel parameter values. Finally, the electronic control unit detects the mixed fuel to obtain a detection result, and calculates the excess air coefficient corresponding to the mixed fuel and the mixed steam pressure value corresponding to the mixed fuel in the cylinder based on the detection result. The electronic control unit further inputs the obtained excess air coefficient and the mixed steam pressure value into the air flow calculation model, and calculates the first fuel partial pressure value corresponding to the methanol fuel in the mixed fuel based on the first partial pressure proportion, the excess air coefficient and the mixed fuel in the cylinder.

[0040] Thus, the methanol fuel in the mixed fuel is corrected, and the partial pressure proportion of the methanol fuel in the mixed fuel is calculated based on the corrected proportion and the fuel parameters such as molar mass, volume and temperature, so as to calculate the fuel partial pressure value corresponding to the methanol fuel in the mixed fuel based on the partial pressure proportion, the excess air coefficient corresponding to the mixed fuel and the mixed steam pressure value corresponding to the mixed fuel in the cylinder. Therefore, the air flow calculation model can more accurately calculate the fuel partial pressure value corresponding to each fuel in the mixed fuel when the methanol engine injects the mixed fuel, and the torque accuracy of the methanol engine and the control robustness of the methanol engine are improved. BRIEF DESCRIPTION OF DRAWINGS

[0041] Figure 1 is a structural schematic diagram of a terminal device related to the hardware running environment of the embodiment scheme of the present application;

[0042] Figure 2 is a flowchart of the first embodiment of the fuel partial pressure calculation method of the present application;

[0043] Figure 3 is a flowchart of the second embodiment of the fuel partial pressure calculation method of the present application;

[0044] Figure 4A detailed schematic diagram of an air flow correction table related to an embodiment of the fuel partial pressure value calculation method of the present application;

[0045] Figure 5 A detailed schematic diagram of a fuel ratio correction coefficient table related to an embodiment of the fuel partial pressure value calculation method of the present application;

[0046] Figure 6 A functional module schematic diagram related to an embodiment of the fuel partial pressure value calculation device of the present application.

[0047] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0048] It should be understood that the specific embodiments described herein are merely intended to explain the present application and are not intended to limit the present application.

[0049] Reference Figure 1 , Figure 1 A terminal device structure schematic diagram of a hardware running environment related to an embodiment of the present application.

[0050] It should be noted that the terminal device of the embodiments of the present application can be a device for executing the fuel partial pressure value calculation method of the present application, and the terminal device can be a terminal device connected to an electronic control unit of a vehicle, a mobile terminal, a data storage control terminal, a PC terminal, etc.

[0051] As shown in Figure 1 , the terminal device can include a processor 1001, such as a central processing unit (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. The communication bus 1002 is used to realize the connection and communication between the components. The user interface 1003 can include a display screen, an input unit such as a keyboard, and can also include a standard wired interface, a wireless interface. The network interface 1004 can optionally include a standard wired interface, a wireless interface (such as a wireless fidelity (WIreless-FIdelity, WI-FI) interface). The memory 1005 can be a high-speed random access memory (RAM) memory, or a stable non-volatile memory (Non-Volatile Memory, NVM), such as a magnetic disk memory. The memory 1005 can also be a storage device independent of the aforementioned processor 1001.

[0052] Those skilled in the art can understand that Figure 1The structure shown in the figure does not constitute a limitation on the terminal device, and can include more or fewer components than shown, or combine certain components, or different component arrangements.

[0053] As shown in Figure 1 The memory 1005 as a storage medium can include an operating system, a data storage module, a network communication module, a user interface module, and a fuel partial pressure value calculation program.

[0054] In Figure 1 In the terminal device shown in the figure, the network interface 1004 is mainly used for data communication with other devices; the user interface 1003 is mainly used for data interaction with the user; the processor 1001 and the memory 1005 in the terminal device of the present application can be arranged in the terminal device, and the terminal device calls the fuel partial pressure value calculation program stored in the memory 1005 through the processor 1001 and performs the following operations:

[0055] Determine the initial first fuel ratio corresponding to the first fuel, wherein the initial first fuel ratio is the percentage of the first fuel in the mixed fuel;

[0056] Obtain a fuel ratio correction coefficient table, and correct the initial first fuel ratio based on the fuel ratio correction coefficient table to determine a target first fuel ratio;

[0057] Detect each first fuel parameter value corresponding to the first fuel, and calculate a first partial pressure ratio corresponding to the first fuel based on the target first fuel ratio and each first fuel parameter value;

[0058] Calculate the excess air coefficient and the mixed steam pressure value corresponding to the mixed fuel, and calculate the first fuel partial pressure value corresponding to the first fuel according to the first partial pressure ratio, the excess air coefficient and the mixed steam pressure value.

[0059] Further, the processor 1001 calls the fuel partial pressure value calculation program stored in the memory 1005, and further performs the following operations:

[0060] The step of correcting the initial first fuel ratio based on the fuel ratio correction coefficient table to determine the target first fuel ratio comprises:

[0061] Query the fuel ratio correction coefficient table based on the initial first fuel ratio to determine the standard first fuel ratio corresponding to the initial first fuel ratio as the target fuel ratio;

[0062] Determine the correction first fuel ratio corresponding to the target fuel ratio as the target first fuel ratio.

[0063] Further, the processor 1001 invokes a calculation program of the fuel partial pressure value stored in the memory 1005, and further performs the following operations:

[0064] detecting an oxygen content and a carbon-hydrogen ratio value corresponding to the mixed fuel;

[0065] calculating an excess air coefficient corresponding to the mixed fuel based on the oxygen content and the carbon-hydrogen ratio value.

[0066] Further, the processor 1001 invokes a calculation program of the fuel partial pressure value stored in the memory 1005, and further performs the following operations:

[0067] detecting an absolute pressure value, a cylinder exhaust pressure value, and a cylinder back pressure value in a cylinder of the methanol engine;

[0068] calculating a mixed vapor pressure value corresponding to the mixed fuel based on the absolute pressure value, the cylinder exhaust pressure value, and the cylinder back pressure value.

[0069] Further, the processor 1001 invokes a calculation program of the fuel partial pressure value stored in the memory 1005, and further performs the following operations:

[0070] determining an air flow coefficient corresponding to air in the cylinder, and calculating a pressure charge conversion coefficient in the cylinder based on the air flow coefficient and the target first fuel ratio;

[0071] calculating an air charge corresponding to the first fuel based on the pressure charge conversion coefficient and the first fuel partial pressure value.

[0072] Further, the processor 1001 invokes a calculation program of the fuel partial pressure value stored in the memory 1005, and further performs the following operations:

[0073] detecting a real-time temperature value corresponding to air in the cylinder, and converting the real-time temperature value into a thermodynamic temperature value;

[0074] detecting an engine cylinder parameter corresponding to the cylinder, and determining an air damping coefficient corresponding to the engine cylinder parameter based on a preset air flow correction table;

[0075] calculating an air flow coefficient corresponding to the air based on the thermodynamic temperature value and the air damping coefficient.

[0076] Further, the engine cylinder parameter includes a valve overlap angle value and an engine speed value, and the processor 1001 invokes a calculation program of the fuel partial pressure value stored in the memory 1005, and further performs the following operations:

[0077] query a preset air flow correction table based on the valve overlap angle value to determine a target valve overlap angle consistent with the valve overlap angle value among each standard valve overlap angle included in the air flow correction table;

[0078] query the air flow correction table based on the engine speed value to determine a target engine speed consistent with the engine speed value among each standard engine speed included in the air flow correction table;

[0079] determine a target coefficient corresponding to the target valve overlap angle and the target engine speed among each standard coefficient included in the air flow correction table, and determine the target coefficient as the air damping coefficient corresponding to the engine cylinder parameter.

[0080] Based on the terminal device, the overall concept of the fuel partial pressure value calculation method is provided.

[0081] Since the air-fuel ratio of methanol fuel in the mixed fuel is 6.5, and the air-fuel ratio of gasoline fuel is 14.7, during the process of injecting mixed fuel in the methanol engine in the new energy vehicle, it is necessary to control the methanol engine to inject more methanol fuel to ensure that the mixed fuel can be fully combusted; as a result, it is easy to occur that the actual space occupied by the methanol fuel in the cylinder of the methanol engine is more than the calculated space, so that the methanol engine cannot accurately calculate the fuel partial pressure value corresponding to the methanol fuel, and adjust the intake air amount based on the fuel partial pressure value.

[0082] In view of the above phenomenon, the present application provides a fuel partial pressure value calculation method, which comprises the following steps: determining an initial first fuel ratio corresponding to a first fuel, wherein the initial first fuel ratio is the percentage of the first fuel in the mixed fuel; obtaining a fuel ratio correction coefficient table, and correcting the initial first fuel ratio based on the fuel ratio correction coefficient table to determine a target first fuel ratio; detecting each first fuel parameter value corresponding to the first fuel, and calculating a first partial pressure ratio corresponding to the first fuel based on the target first fuel ratio and each first fuel parameter value; calculating an excess air coefficient and a mixed steam pressure value corresponding to the mixed fuel, and calculating a first fuel partial pressure value corresponding to the first fuel according to the first partial pressure ratio, the excess air coefficient and the mixed steam pressure value.

[0083] Thus, the application corrects the percentage of methanol fuel in the mixed fuel, and determines the corresponding partial pressure ratio of the methanol fuel in the mixed fuel based on the corrected percentage and fuel parameters such as molar mass, volume and temperature, so as to calculate the corresponding fuel partial pressure value of the methanol fuel in the mixed fuel based on the partial pressure ratio, the corresponding excess air coefficient of the mixed fuel and the corresponding mixed steam pressure value of the mixed fuel in the cylinder, so that the air flow calculation model can more accurately calculate the corresponding fuel partial pressure value of each fuel in the mixed fuel when the methanol engine injects the mixed fuel, thereby improving the torque accuracy of the methanol engine and the control robustness of the methanol engine.

[0084] Based on the overall concept of the terminal device and the fuel partial pressure value calculation method of the application, various embodiments of the fuel partial pressure value calculation method of the application are further proposed.

[0085] Please refer to Figure 2 , Figure 2 The flowchart of the first embodiment of the fuel partial pressure value calculation method of the application is shown in the figure.

[0086] It should be understood that, although the logical order is shown in the flowchart, in some cases, the steps shown or described herein can of course be performed in an order different from that shown.

[0087] In addition, in this embodiment, the fuel partial pressure value calculation method of the application is applied to a terminal device connected to an electronic control unit configured for a vehicle and integrated with an air flow calculation model.

[0088] As shown in Figure 2 , in this embodiment, the fuel partial pressure value calculation method of the application can include the following steps:

[0089] Step S10: determining an initial first fuel ratio corresponding to the first fuel, wherein the initial first fuel ratio is the percentage of the first fuel in the mixed fuel;

[0090] In this embodiment, when the terminal device needs to calculate the fuel partial pressure value of the methanol fuel in the mixed fuel, the electronic control unit is first called to detect the methanol engine, so as to determine the percentage value of the methanol fuel in the mixed fuel injected by the methanol engine, and the percentage value is determined as the initial first fuel ratio corresponding to the methanol fuel.

[0091] For example, when the terminal device needs to calculate the fuel partial pressure value corresponding to methanol fuel in the mixed fuel, it first calls the ECU (Electronic Control Unit) to detect the mixed fuel injected by the methanol engine, thereby determining the percentage of methanol fuel in the mixed fuel, and then determining this percentage as the initial first fuel ratio of methanol fuel in the mixed fuel.

[0092] Step S20: Obtain the fuel ratio correction coefficient table, and correct the initial first fuel ratio based on the fuel ratio correction coefficient table to determine the target first fuel ratio;

[0093] In this embodiment, the electronic control unit reads the storage device to obtain a fuel ratio correction coefficient table pre-stored by the technician, and corrects the initial first fuel ratio corresponding to methanol fuel based on the fuel ratio correction coefficient table to determine the target first fuel ratio corresponding to methanol fuel. At the same time, the electronic control unit determines the second fuel ratio corresponding to gasoline fuel in the mixed fuel based on the target first fuel ratio.

[0094] For example, please refer to Figure 5 , Figure 5 This is a detailed schematic diagram of a fuel ratio correction coefficient table involved in an embodiment of the fuel partial pressure calculation method of this application. The ECU reads the storage device to obtain the data pre-stored by the technician, such as... Figure 5 The fuel ratio correction factor table 1-DT(u) is shown. The ECU then corrects the initial first fuel ratio corresponding to methanol fuel based on this fuel ratio correction factor table 1-DT(u) to determine the target first fuel ratio r (i.e. Figure 5 The ECU determines the second fuel ratio (1-r) of gasoline in the blend based on the target first fuel ratio r.

[0095] Furthermore, the fuel ratio correction coefficient table includes each standard first fuel percentage and a corrected first fuel percentage corresponding to each standard first fuel percentage. In a feasible embodiment, the step S20 above, "correcting the initial first fuel percentage based on the fuel ratio correction coefficient table to determine the target first fuel percentage," may specifically include:

[0096] Step S201: Based on the initial first fuel ratio, query the fuel ratio correction coefficient table to determine the standard first fuel ratio corresponding to the initial first fuel ratio as the target fuel ratio;

[0097] In the embodiment, the electronic control unit reads the storage device arranged in the terminal device to obtain the fuel ratio correction coefficient table preset by the technician, and queries the fuel ratio correction coefficient table based on the initial first fuel ratio to determine the standard first fuel ratio consistent with the initial first fuel ratio in the fuel ratio correction coefficient table as the target fuel ratio.

[0098] Step S202: determining the correction first fuel ratio corresponding to the target fuel ratio as the target first fuel ratio.

[0099] In the embodiment, the electronic control unit queries the correction first fuel ratio corresponding to the target fuel ratio in the fuel ratio correction coefficient table, and determines the correction first fuel ratio as the target first fuel ratio corresponding to the methanol fuel in the mixed fuel after correction.

[0100] For example, the ECU first reads the storage device in the terminal device to obtain the fuel ratio correction coefficient table 1-DT(u) preset by the technician, queries the fuel ratio correction coefficient table 1-DT(u) based on the initial first fuel ratio corresponding to the methanol fuel, and determines the standard first fuel ratio consistent with the initial first fuel ratio in the fuel ratio correction coefficient table 1-DT(u) as the target fuel ratio. Then, the ECU determines the correction first fuel ratio corresponding to the target fuel ratio in the fuel ratio correction coefficient table 1-DT(u), and determines the correction first fuel ratio as the target first fuel ratio r corresponding to the target methanol fuel ratio.

[0101] Step S30: detecting the first fuel parameter values corresponding to the first fuel, and calculating the first partial pressure ratio corresponding to the first fuel based on the target first fuel ratio and the first fuel parameter values.

[0102] In the embodiment, the electronic control unit calls the detection unit to detect the cylinder of the methanol engine to obtain the first fuel parameter values such as the molar mass, volume and temperature of the methanol fuel in the cylinder, and the second fuel parameter values such as the molar mass, volume and temperature of the air in the cylinder. The electronic control unit further inputs the obtained target first fuel ratio, second fuel ratio and fuel parameter values into the preset air flow calculation model, and calculates the target first fuel ratio, second fuel ratio and fuel parameter values based on the preset partial pressure ratio formula by the air flow calculation model to obtain the first partial pressure ratio corresponding to the methanol fuel in the mixed fuel.

[0103] For example, the ECU first calls the detection unit to detect the cylinder of the methanol engine to obtain the molar mass M f of the mixed fuel in the cylinder, the molar mass Ma , and fuel parameter values such as volume V, temperature T, and mass m of each of the mixed fuel and air, and input the obtained target first fuel ratio r, second fuel ratio 1-r, and molar mass M f , and molar mass M a , and fuel parameter values such as volume V and temperature T of each of the mixed fuel and air into a preset air flow calculation model in the ECU, and then the air flow calculation model calculates based on a preset partial pressure ratio calculation formula:

[0104]

[0105] The first partial pressure ratio Rfuel of the methanol fuel in the mixed fuel is calculated.

[0106] It should be noted that in the above partial pressure ratio calculation formula, 6.45 is the air-fuel ratio value corresponding to the methanol fuel, 14.7 is the air-fuel ratio value corresponding to the gasoline fuel, 30 is the molar mass corresponding to the methanol fuel, 60 is the molar mass corresponding to the gasoline fuel, and 29 is the molar mass corresponding to fresh air.

[0107] Step S40: Calculate the excess air coefficient and the mixed steam pressure value corresponding to the mixed fuel, and calculate the first fuel partial pressure value corresponding to the first fuel according to the first partial pressure ratio, the excess air coefficient, and the mixed steam pressure value;

[0108] In this embodiment, the electronic control unit calls the detection unit to detect the cylinder, thereby determining the excess air coefficient corresponding to the mixed fuel in the cylinder, and the mixed steam pressure value corresponding to the mixed fuel in the cylinder, and inputting the excess air coefficient and the mixed steam pressure value to the air flow calculation model, and the air flow calculation model further calculates the first fuel partial pressure value corresponding to the methanol fuel in the mixed fuel based on the obtained first partial pressure ratio, mixed steam pressure value, and excess air coefficient.

[0109] For example, the ECU calls the detection unit to detect the cylinder of the methanol engine, thereby determining the excess air coefficient λ corresponding to the mixed fuel in the cylinder, and the mixed steam pressure value (MAP-P i -P e ) corresponding to the mixed fuel in the cylinder, and inputting the excess air coefficient λ and the mixed steam pressure value (MAP-P i -P e ) to the air flow calculation model, and finally, the air flow calculation model calculates based on the preset calculation model: Png = (Map-P i -P e )*Rfuel / λ, the first partial pressure ratio Rfuel, the excess air coefficient λ, and the mixed steam pressure value (MAP-Pi -P e ) to obtain the first fuel partial pressure value corresponding to the methanol fuel in the mixed fuel.

[0110] Further, in a feasible embodiment, the step of "calculating the excess air coefficient and the mixed vapor pressure value corresponding to the mixed fuel" in the above step S40 can specifically include:

[0111] Step S401: detecting the oxygen content and the carbon-hydrogen ratio value corresponding to the mixed fuel;

[0112] Step S402: calculating the excess air coefficient corresponding to the mixed fuel based on the oxygen content and the carbon-hydrogen ratio value;

[0113] For example, the ECU calls the oxygen sensor to detect the mixed fuel in the cylinder to determine the oxygen content and the carbon-hydrogen ratio value contained in the mixed fuel, and then calculates the excess air coefficient λ corresponding to the mixed fuel based on the obtained oxygen content and carbon-hydrogen ratio value.

[0114] Further, in a feasible embodiment, the step of "calculating the excess air coefficient and the mixed vapor pressure value corresponding to the mixed fuel" in the above step S40 can further include:

[0115] Step S403: detecting the absolute pressure value, the cylinder exhaust pressure value and the cylinder back pressure value in the cylinder of the methanol engine;

[0116] In this embodiment, the electronic control unit calls the pressure detection device to detect the cylinder to determine the absolute pressure value corresponding to all the gases in the cylinder, the cylinder back pressure value corresponding to the back pressure generated between the cylinder and the intake manifold, and the cylinder exhaust pressure value corresponding to the exhaust gas generated in the cylinder.

[0117] Step S404: calculating the mixed vapor pressure value corresponding to the mixed fuel based on the absolute pressure value, the cylinder exhaust pressure value and the cylinder back pressure value;

[0118] In this embodiment, the electronic control unit subtracts the cylinder back pressure value corresponding to the back pressure generated between the cylinder and the intake manifold from the absolute pressure value corresponding to all the gases in the cylinder, and then subtracts the cylinder exhaust pressure value corresponding to the exhaust gas generated in the cylinder to obtain the mixed vapor pressure value corresponding to the mixed fuel in the cylinder.

[0119] For example, the ECU calls the pressure detection device to detect the cylinder of the methanol engine to determine the absolute pressure value MAP corresponding to all the gases in the cylinder, and the cylinder back pressure value P i, and the cylinder gas pressure value P corresponding to the exhaust gas in the cylinder a , and then the ECU subtracts the cylinder back pressure value P from the absolute pressure value MAP corresponding to all the gas i and the cylinder gas pressure value P a to obtain the mixed gas pressure value (MAP-P i -P e ) corresponding to the gas in the cylinder.

[0120] In this embodiment, when the terminal device needs to calculate the fuel partial pressure value corresponding to the methanol fuel in the mixed fuel, the terminal device first calls the internally configured electronic control unit to read the storage device to obtain the fuel ratio correction coefficient table stored by the technician in advance, and the electronic control unit corrects the percentage of the methanol fuel in the mixed fuel based on the fuel ratio correction coefficient table to obtain a target first fuel percentage, and simultaneously, the electronic control unit determines a second fuel percentage corresponding to the gasoline fuel in the mixed fuel based on the target first fuel percentage, and then the electronic control unit calls the detection unit to detect the cylinder of the methanol engine to obtain the first fuel parameter values such as the molar mass, volume, and temperature of the methanol fuel in the cylinder and the second fuel parameter values such as the molar mass, volume, and temperature of the air in the cylinder, and the electronic control unit further inputs the obtained target first fuel percentage, second fuel percentage, and fuel parameter values into a preset air flow calculation model, and the air flow calculation model calculates the obtained target first fuel percentage, second fuel percentage, and fuel parameter values based on a preset partial pressure percentage formula to obtain a first partial pressure percentage corresponding to the methanol fuel in the mixed fuel, and finally, the electronic control unit calls the detection unit to detect the cylinder to determine an excess air coefficient corresponding to the mixed fuel in the cylinder and a mixed gas pressure value corresponding to the mixed fuel in the cylinder, and inputs the excess air coefficient and the mixed gas pressure value into the air flow calculation model, and the air flow calculation model further calculates the first fuel partial pressure value corresponding to the methanol fuel in the mixed fuel based on the obtained first partial pressure percentage, mixed gas pressure value, and excess air coefficient.

[0121] In this way, the present application corrects the percentage of the methanol fuel in the mixed fuel, and calculates the partial pressure percentage corresponding to the methanol fuel in the mixed fuel based on the corrected percentage and fuel parameters such as molar mass, volume, and temperature, so as to calculate the fuel partial pressure value corresponding to the methanol fuel in the mixed fuel based on the partial pressure percentage, excess air coefficient corresponding to the mixed fuel, and mixed gas pressure value corresponding to the mixed fuel in the cylinder, so as to enable the air flow calculation model to more accurately calculate the fuel partial pressure value corresponding to each fuel in the mixed fuel when the methanol engine sprays the mixed fuel, and further improve the torque accuracy of the methanol engine and the control robustness of the methanol engine.

[0122] Further, based on the first embodiment of the calculation method of the fuel partial pressure value of the present application, the second embodiment of the calculation method of the fuel partial pressure value of the present application is proposed.

[0123] Please refer to Figure 3 , Figure 3 The flowchart of the second embodiment of the calculation method of the fuel partial pressure value of the present application is shown in FIG. 4, which can further include the following steps after step S40: Figure 3

[0124] Step A10: determining the air flow coefficient corresponding to the air in the cylinder, and calculating the pressure charge conversion coefficient in the cylinder according to the air flow coefficient and the target first fuel ratio;

[0125] In this embodiment, the electronic control unit calls the detection unit to detect the methanol engine, thereby determining the real-time temperature value corresponding to the air in the cylinder, and the engine cylinder parameter corresponding to the cylinder, and inputs the obtained air temperature value, engine cylinder parameter and target first fuel ratio into the air flow calculation model, and the air flow calculation model calculates the air flow coefficient corresponding to the air in the cylinder based on the air temperature value and the engine cylinder parameter, and then calculates the pressure charge conversion coefficient in the cylinder according to the air flow coefficient and the target first fuel ratio.

[0126] For example, the ECU first calls the detection unit to detect the methanol engine, thereby obtaining the real-time temperature value t corresponding to the air in the cylinder of the methanol engine, and the engine cylinder parameter corresponding to the methanol engine, and then the ECU inputs the obtained real-time temperature value t, engine cylinder parameter and target first fuel ratio r into the air flow calculation model, and the air flow calculation model calculates the air flow coefficient corresponding to the air in the cylinder based on the air temperature value t and the engine cylinder parameter, and then the air flow calculation model calculates the pressure charge conversion coefficient in the cylinder based on the air flow coefficient and the target first fuel ratio r.

[0127] Further, in a feasible embodiment, the step of "determining the air flow coefficient corresponding to the air in the cylinder" in step A10 can specifically include:

[0128] Step A101: detecting the real-time temperature value corresponding to the air in the cylinder, and converting the real-time temperature value into a thermodynamic temperature value;

[0129] ​In the embodiment, the electronic control unit calls the detection unit to detect the cylinder in the methanol engine to determine the real-time temperature value corresponding to the air in the cylinder, and the air flow calculation model converts the obtained real-time temperature value into a thermodynamic temperature value, and inputs the thermodynamic temperature into the air flow calculation model.

[0130] Step A102: detecting the engine cylinder parameter corresponding to the cylinder, and determining the air damping coefficient corresponding to the engine cylinder parameter based on the preset air flow correction table;

[0131] In the embodiment, the electronic control unit determines the valve overlap angle value and the engine speed value corresponding to the methanol engine, and determines the valve overlap angle value and the engine speed value as the engine cylinder parameter. Meanwhile, the electronic control unit reads the storage device to obtain the preset air flow correction table, and inputs the engine cylinder parameter and the air flow correction table into the air flow calculation model. The air flow calculation model queries the air flow correction table based on the valve overlap angle value and the engine speed value to determine the air damping coefficient corresponding to the valve overlap angle value and the engine speed value.

[0132] Step A103: calculating the air flow coefficient corresponding to the air according to the thermodynamic temperature value and the air damping coefficient;

[0133] In the embodiment, the air flow calculation model multiplies the obtained thermodynamic temperature value and the air damping coefficient to obtain the air flow coefficient corresponding to the air.

[0134] For example, please refer to Figure 4 , Figure 4 The detailed schematic diagram of the air flow correction table involved in the embodiment of the fuel partial pressure value calculation method of the present application. The ECU first calls the temperature sensor to detect the real-time temperature value t corresponding to the air in the cylinder, and adds 273 to the obtained real-time temperature value t to obtain the thermodynamic temperature value T corresponding to the real-time temperature value t br At the same time, the ECU calls the detection unit to detect the methanol engine to obtain the valve overlap angle value and the engine speed value corresponding to the methanol engine, and reads the storage device to obtain the air flow correction table 2-DT(u) preset by the technical personnel as shown in Figure 4 After that, the ECU obtains the thermodynamic temperature value T br, the valve overlap angle value, the engine speed value and the air flow correction table 2-DT(u) are input into the air flow calculation model, the air flow correction table 2-DT(u) is queried based on the obtained valve overlap angle value and the engine speed value by the air flow calculation model, so as to determine the air damping coefficient corresponding to the valve overlap angle value and the engine speed value, and then the air flow model multiplies the thermodynamic temperature value T br to obtain the air flow coefficient corresponding to the air.

[0135] Further, in a feasible embodiment, the step of "determining the air damping coefficient corresponding to the engine cylinder parameter based on the preset air flow correction table" in the above step A102 can specifically include:

[0136] Step A1021: querying the preset air flow correction table based on the valve overlap angle value, so as to determine the target valve overlap angle consistent with the valve overlap angle value among each standard valve overlap angle contained in the air flow correction table;

[0137] Step A1022: querying the air flow correction table based on the engine speed value, so as to determine the target engine speed consistent with the engine speed value among each standard engine speed contained in the air flow correction table;

[0138] Step A1023: determining the target coefficient corresponding to the target valve overlap angle and the target engine speed among each standard coefficient contained in the air flow correction table, and determining the target coefficient as the air damping coefficient corresponding to the engine cylinder parameter;

[0139] Exemplarily, for example, the air flow calculation model first queries the air flow correction table 2-DT(u) based on the valve overlap angle value and the engine speed value contained in the engine cylinder parameter, so as to determine the target valve overlap angle consistent with the valve overlap angle value among a plurality of standard valve overlap angles contained in the air flow correction table 2-DT(u), and determine the target engine speed consistent with the engine speed value among a plurality of standard engine speeds contained in the air flow correction table 2-DT(u), and then the air flow calculation model determines the air damping coefficient corresponding to the target valve overlap angle and the target engine speed among a plurality of standard damping coefficients contained in the air flow correction table 2-DT(u).

[0140] Step A20: calculating the air charge corresponding to the first fuel based on the pressure charge conversion coefficient and the first fuel partial pressure value;

[0141] In the embodiment, the air flow calculation model acquires a preset charge calculation formula, and calculates the pressure charge conversion coefficient and the first fuel partial pressure value corresponding to the methanol fuel according to the charge calculation formula to obtain the air charge corresponding to the methanol fuel in the mixed fuel.

[0142] In the embodiment, the electronic control unit calls the detection unit to detect the methanol engine to determine the real-time temperature value of the air in the cylinder and the engine cylinder parameter corresponding to the cylinder, and inputs the obtained air temperature value, the engine cylinder parameter and the target first fuel proportion to the air flow calculation model. The air flow calculation model calculates the air flow coefficient of the air in the cylinder based on the air temperature value and the engine cylinder parameter, and then calculates the pressure charge conversion coefficient in the cylinder according to the air flow coefficient and the target first fuel proportion. Then, the air flow calculation model acquires a preset charge calculation formula, and calculates the pressure charge conversion coefficient and the first fuel partial pressure value corresponding to the methanol fuel according to the charge calculation formula to obtain the air charge corresponding to the methanol fuel in the mixed fuel.

[0143] In this way, the air charge is calculated based on the first fuel partial pressure value corresponding to the methanol fuel, so that the air flow calculation model can more accurately calculate the air charge corresponding to the fresh air.

[0144] In addition, to achieve the above-mentioned purpose, the application also provides a fuel partial pressure value calculation device, which is described as follows Figure 6 , Figure 6 An embodiment of the fuel partial pressure value calculation device of the application relates to a functional module schematic diagram, as shown in Figure 6 The device comprises:

[0145] The proportion detection module 10 is configured to determine an initial first fuel proportion corresponding to the first fuel, wherein the initial first fuel proportion is a percentage of the first fuel in the mixed fuel.

[0146] The coefficient correction module 20 is configured to acquire a fuel ratio correction coefficient table, and correct the initial first fuel proportion based on the fuel ratio correction coefficient table to determine a target first fuel proportion.

[0147] The proportion calculation module 30 is configured to detect each first fuel parameter value corresponding to the first fuel, and calculate a first partial pressure proportion corresponding to the first fuel based on the target first fuel proportion and each first fuel parameter value.

[0148] The partial pressure calculation module 40 is configured to calculate an excess air coefficient and a mixed steam pressure value corresponding to the mixed fuel, and calculate a first fuel partial pressure value corresponding to the first fuel according to the first partial pressure ratio, the excess air coefficient, and the mixed steam pressure value.

[0149] Further, the coefficient correction module 20 comprises:

[0150] The table query unit is configured to query the fuel ratio correction coefficient table based on the initial first fuel ratio to determine the standard first fuel ratio corresponding to the initial first fuel ratio as a target fuel ratio.

[0151] The ratio correction unit is configured to determine the corrected first fuel ratio corresponding to the target fuel ratio as a target first fuel ratio.

[0152] Further, the partial pressure calculation module 40 comprises:

[0153] The exhaust gas detection unit is configured to detect an oxygen content and a carbon-hydrogen ratio value corresponding to the mixed fuel.

[0154] The air coefficient calculation unit is configured to calculate an excess air coefficient corresponding to the mixed fuel based on the oxygen content and the carbon-hydrogen ratio value.

[0155] Further, the partial pressure calculation module 40 further comprises:

[0156] The pressure detection unit is configured to detect an absolute pressure value, a cylinder exhaust pressure value, and a cylinder back pressure value in a cylinder of a methanol engine.

[0157] The pressure calculation unit is configured to calculate a mixed steam pressure value corresponding to the mixed fuel based on the absolute pressure value, the cylinder exhaust pressure value, and the cylinder back pressure value.

[0158] Further, the partial pressure calculation module 40 further comprises:

[0159] The pressure coefficient calculation unit is configured to determine an air flow coefficient corresponding to air in the cylinder, and calculate a pressure charge conversion coefficient in the cylinder according to the air flow coefficient and the target first fuel ratio.

[0160] The charge calculation unit is configured to calculate an air charge corresponding to the first fuel based on the pressure charge conversion coefficient and the first fuel partial pressure value.

[0161] Further, the pressure coefficient calculation unit comprises:

[0162] The first parameter detection sub-unit is configured to detect a real-time temperature value corresponding to air in the cylinder, and convert the real-time temperature value into a thermodynamic temperature value.

[0163] a second parameter detection subunit, configured to detect an engine cylinder parameter corresponding to the cylinder, and determine an air damping coefficient corresponding to the engine cylinder parameter based on a preset air flow correction table;

[0164] a flow coefficient calculation subunit, configured to calculate an air flow coefficient corresponding to the air based on the thermodynamic temperature value and the air damping coefficient.

[0165] Further, the pressure coefficient calculation unit further comprises:

[0166] a first comparison subunit, configured to query the preset air flow correction table based on the valve overlap angle value, so as to determine a target valve overlap angle consistent with the valve overlap angle value from each standard valve overlap angle included in the air flow correction table;

[0167] a second comparison subunit, configured to query the air flow correction table based on the engine speed value, so as to determine a target engine speed consistent with the engine speed value from each standard engine speed included in the air flow correction table;

[0168] a third comparison subunit, configured to determine a target coefficient corresponding to the target valve overlap angle and the target engine speed from each standard coefficient included in the air flow correction table, and determine the target coefficient as the damping coefficient corresponding to the air.

[0169] In addition, the present application also provides a terminal device, which has a fuel partial pressure value calculation program capable of running on a processor, and the terminal device implements the steps of the fuel partial pressure value calculation method according to any one of the above embodiments when executing the fuel partial pressure value calculation program.

[0170] The specific embodiments of the terminal device of the present application are basically the same as those of the above fuel partial pressure value calculation method, and will not be repeated here.

[0171] In addition, the present application also provides a computer readable storage medium, which has a fuel partial pressure value calculation program stored thereon, and the fuel partial pressure value calculation program implements the steps of the fuel partial pressure value calculation method according to any one of the above embodiments when executed by a processor.

[0172] The specific embodiments of the computer readable storage medium of the present application are basically the same as those of the above fuel partial pressure value calculation method, and will not be repeated here.

[0173] It should be noted that, in the present document, the terms "comprises / comprising" or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element preceded by "comprises... a" does not, without more limitations, foreclose the existence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0174] The above-mentioned sequence numbers of the embodiments of the present application are only for description, and do not represent the advantages or disadvantages of the embodiments.

[0175] From the above description of the embodiments, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be realized by means of software and necessary general hardware platforms, and of course, they can also be realized by hardware, but in many cases, the former is a better embodiment. Based on such understanding, the technical solutions of the present application can be embodied in the form of a software product, which is stored in a storage medium (such as a ROM / RAM, a magnetic disk, or an optical disk) as described above, and includes a number of instructions for making a terminal device (which can be a vehicle or a terminal device connected to an electronic control unit of the vehicle, a mobile terminal, a data storage control terminal, a PC, or other terminal devices) execute the methods described in the various embodiments of the present application.

[0176] The above is only the preferred embodiment of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent process transformation using the content of the specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A method of calculating a fuel partial pressure value, characterized by, The method for calculating the fuel partial pressure value comprises the following steps: determining an initial first fuel proportion corresponding to the first fuel, wherein the initial first fuel proportion is the percentage of the first fuel in the mixed fuel; obtaining a fuel ratio correction coefficient table and correcting the initial first fuel proportion based on the fuel ratio correction coefficient table to determine a target first fuel proportion; determining a second fuel proportion corresponding to the second fuel in the mixed fuel based on the target first fuel proportion; obtaining first fuel parameter values of molar mass, volume and temperature of the first fuel in the cylinder and second fuel parameter values of molar mass, volume and temperature of the second fuel in the cylinder, and inputting the target first fuel proportion, the second fuel proportion and the fuel parameter values into a preset air flow calculation model to obtain a first partial pressure proportion of the first fuel in the mixed fuel; calculating an excess air coefficient and a mixed steam pressure value corresponding to the mixed fuel, and calculating a first fuel partial pressure value corresponding to the first fuel based on the first partial pressure proportion, the excess air coefficient and the mixed steam pressure value.

2. The method of calculating a fuel partial pressure value according to claim 1, characterized by, The fuel ratio correction coefficient table comprises standard first fuel proportions and correction first fuel proportions corresponding to the standard first fuel proportions respectively. The step of correcting the initial first fuel proportion based on the fuel ratio correction coefficient table to determine a target first fuel proportion comprises: querying the fuel ratio correction coefficient table based on the initial first fuel proportion to determine the standard first fuel proportion corresponding to the initial first fuel proportion as the target fuel proportion; determining the correction first fuel proportion corresponding to the target fuel proportion as the target first fuel proportion.

3. The method of calculating a fuel partial pressure value according to claim 1, characterized by, The step of calculating the excess air coefficient and the mixed steam pressure value corresponding to the mixed fuel comprises: detecting an oxygen content and a carbon-hydrogen ratio value of the mixed fuel; calculating the excess air coefficient corresponding to the mixed fuel based on the oxygen content and the carbon-hydrogen ratio value.

4. The method of calculating a fuel partial pressure value according to claim 3, characterized by, The step of calculating the excess air coefficient and the mixed steam pressure value corresponding to the mixed fuel further comprises: detecting an absolute pressure value, a cylinder exhaust pressure value and a cylinder back pressure value in the cylinder of the engine; calculating the mixed steam pressure value corresponding to the mixed fuel based on the absolute pressure value, the cylinder exhaust pressure value and the cylinder back pressure value.

5. The method of calculating a fuel partial pressure value according to claim 1, wherein, After the step of calculating the first fuel partial pressure value corresponding to the first fuel based on the first partial pressure proportion, the excess air coefficient and the mixed steam pressure value, the method further comprises: determining an air flow coefficient corresponding to the air in the cylinder, and calculating a pressure charge conversion coefficient in the cylinder based on the air flow coefficient and the target first fuel proportion; calculating an air charge corresponding to the first fuel based on the pressure charge conversion coefficient and the first fuel partial pressure value.

6. The method of calculating a fuel partial pressure value according to claim 5, characterized by, The step of determining the air flow coefficient corresponding to the air in the cylinder comprises: detecting a real-time temperature value of the air in the cylinder, and converting the real-time temperature value into a thermodynamic temperature value; detect an engine cylinder parameter corresponding to the cylinder, and determine an air damping coefficient corresponding to the engine cylinder parameter based on a preset air flow correction table; calculate an air flow coefficient corresponding to the air based on the thermodynamic temperature value and the air damping coefficient.

7. The method of calculating a fuel partial pressure value according to claim 6, characterized by, The engine cylinder parameter includes a valve overlap angle value and an engine speed value, and the step of determining the air damping coefficient corresponding to the engine cylinder parameter based on the preset air flow correction table includes: query the preset air flow correction table based on the valve overlap angle value to determine a target valve overlap angle consistent with the valve overlap angle value among standard valve overlap angles included in the air flow correction table; query the air flow correction table based on the engine speed value to determine a target engine speed consistent with the engine speed value among standard engine speeds included in the air flow correction table; determine a target coefficient corresponding to the target valve overlap angle and the target engine speed among standard coefficients included in the air flow correction table, and determine the target coefficient as the air damping coefficient corresponding to the engine cylinder parameter.

8. A fuel partial pressure value calculating device characterized by comprising: The device includes: a proportion detection module configured to determine an initial first fuel proportion corresponding to the first fuel, wherein the initial first fuel proportion is a percentage of the first fuel in the mixed fuel; a coefficient correction module configured to obtain a fuel ratio correction coefficient table, correct the initial first fuel proportion based on the fuel ratio correction coefficient table to determine a target first fuel proportion, and determine a second fuel proportion corresponding to the second fuel in the mixed fuel based on the target first fuel proportion; a proportion calculation module configured to obtain first fuel parameter values of molar mass, volume, and temperature of the first fuel in the cylinder and second fuel parameter values of molar mass, volume, and temperature of the second fuel in the cylinder, input the obtained target first fuel proportion, second fuel proportion, and fuel parameter values into a preset air flow calculation model to obtain a first partial pressure proportion corresponding to the first fuel in the mixed fuel; a partial pressure calculation module configured to calculate an excess air coefficient and a mixed steam pressure value corresponding to the mixed fuel, and calculate a first fuel partial pressure value corresponding to the first fuel according to the first partial pressure proportion, the excess air coefficient, and the mixed steam pressure value.

9. A terminal device, comprising: The terminal device includes a memory and a processor, the memory stores a fuel partial pressure value calculation program executable on the processor, and the fuel partial pressure value calculation program implements the steps of the fuel partial pressure value calculation method of any one of claims 1 to 7 when executed by the processor.

10. A computer-readable storage medium, characterized in that, The computer readable storage medium stores a fuel partial pressure value calculation program, and the fuel partial pressure value calculation program implements the steps of the fuel partial pressure value calculation method of any one of claims 1 to 7 when executed by the processor.

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