Vehicle control method, device, equipment, medium and product

Abstract

The invention provides a vehicle control method, device and equipment, a medium and a product, and relates to the technical field of vehicles. The method comprises the steps that the current concentration proportion of target fuel in fuel pumped out of a fuel tank is recognized; determining a target air-fuel ratio according to the current concentration ratio; the target air-fuel ratio is the air-fuel ratio meeting complete combustion of fuel; the first fuel injection quantity of the fuel rail fuel injector is determined according to the target air-fuel ratio and the current value of the parameter set; the parameter set at least comprises the air inlet pressure, the air inlet temperature and the engine rotating speed of the engine; controlling an oil rail oil injector to work according to the first oil injection quantity, injecting fuel into the engine through the oil rail oil injector, and controlling the engine to ignite and operate. By means of the method, under the condition of different fuel concentration proportions, the fuel injection quantity needed by the fuel rail fuel injector corresponding to the current concentration proportion is determined, the fuel rail fuel injector is controlled to work according to the needed fuel injection quantity, then vehicle starting is achieved, and rapid vehicle starting under the condition of different fuel concentration proportions can be achieved.

Description

Technical Field

[0001] The present invention relates to the field of vehicle technology, and in particular to a vehicle control method, device, equipment, medium and product. Background Art

[0002] In order to solve the problem of low-temperature starting, hybrid fuel vehicles currently on the market use two fuel supply systems. The auxiliary fuel system is used for low-temperature cold starting. When the water temperature reaches the preset value, the fuel supply system is switched. This dual-fuel supply system requires the vehicle to be started step by step according to different fuels when starting, and the fuel supply system needs to be switched, resulting in a slow starting process for the vehicle. Summary of the invention

[0003] The purpose of the embodiments of the present application is to provide a vehicle control method, device, equipment, medium and product, so that the vehicle can be started quickly under different fuel ratios.

[0004] In a first aspect, an embodiment of the present application provides a vehicle control method, wherein the vehicle includes a fuel tank, a fuel rail injector, and an engine, wherein the fuel tank can be filled with at least one fuel, and the fuel rail injector is used to inject the fuel into the engine; the control method includes:

[0005] identifying a current concentration ratio of a target fuel in the fuel pumped out of the fuel tank, the target fuel being any one of the at least one fuel;

[0006] Determine the target air-fuel ratio according to the current concentration ratio; the target air-fuel ratio is the air-fuel ratio that satisfies complete combustion of the fuel;

[0007] Determining a first fuel injection amount of the fuel rail injector according to a target air-fuel ratio and a current value of a parameter group; the parameter group includes at least an intake pressure of the engine, an intake temperature of the engine, and an engine speed;

[0008] The operation of the fuel rail injector is controlled according to the first fuel injection amount, fuel is injected into the engine through the fuel rail injector, and the engine ignition operation is controlled.

[0009] In some implementations, identifying a current concentration ratio of the target fuel in the fuel pumped out of the fuel tank includes:

[0010] Obtaining the dielectric constant and conductivity of the target fuel;

[0011] Substitute the dielectric constant into the first equation and the conductivity into the second equation to obtain a system of equations; the first equation represents the corresponding relationship between the dielectric constant and the concentration of the target fuel, and the second equation represents the corresponding relationship between the conductivity and the concentration of the target fuel;

[0012] Solve the equations to obtain the current concentration ratio of the target fuel.

[0013] In some implementations, determining the target air-fuel ratio according to the current concentration ratio includes:

[0014] Determine the quality of the fuel based on the current concentration ratio;

[0015] Obtain the air mass required for complete combustion of fuel;

[0016] The ratio of the mass of air to the mass of fuel is determined as a target air-fuel ratio.

[0017] In some embodiments, determining a first fuel injection amount of a rail injector according to a target air-fuel ratio and a current value of a parameter group includes:

[0018] determining an intake air volume of the engine according to current values ​​of the parameter group;

[0019] The ratio of the intake air amount to the target air-fuel ratio is determined as the first fuel injection amount.

[0020] In some embodiments, after controlling the operation of the fuel rail injector according to the first fuel injection amount, injecting fuel into the engine through the fuel rail injector, and controlling the engine to ignite and run, the vehicle control method further includes:

[0021] Obtaining the output torque of the engine;

[0022] The second fuel injection amount is determined according to the output torque and the target torque corresponding to the current concentration ratio, and the operation of the fuel rail injector is controlled according to the second fuel injection amount.

[0023] In some implementations, before determining the second fuel injection amount according to the output torque and the target torque corresponding to the current concentration ratio, the vehicle control method further includes:

[0024] Obtaining a correspondence between a preset concentration ratio of a target fuel, a parameter group and a torque of an engine;

[0025] According to the current concentration ratio, the current value of the parameter group and the corresponding relationship, the target torque corresponding to the current concentration ratio is determined.

[0026] In a second aspect, an embodiment of the present application provides a vehicle control device, wherein the vehicle includes a fuel tank, and the fuel tank can be filled with at least one fuel, and the vehicle control device includes:

[0027] an identification module, used for identifying a current concentration ratio of a target fuel in the fuel pumped out of the fuel tank, the target fuel being any one of the at least one fuel;

[0028] The first determination module is used to determine a target air-fuel ratio according to the current concentration ratio; the target air-fuel ratio is an air-fuel ratio that satisfies complete combustion of the fuel;

[0029] A second determination module is used to determine a first fuel injection amount of the fuel rail injector according to a target air-fuel ratio and a current value of a parameter group; the parameter group includes at least an intake pressure of the engine, an intake temperature of the engine, and an engine speed;

[0030] The control module is used to control the operation of the fuel rail injector according to the first fuel injection amount, inject fuel into the engine through the fuel rail injector, and control the ignition operation of the engine.

[0031] In a third aspect, an embodiment of the present application provides a vehicle, including:

[0032] a memory configured to store instructions; and

[0033] The processor is configured to call the instructions from the memory and to implement the vehicle control method provided in the first aspect of the embodiment of the present application when executing the instructions.

[0034] In a fourth aspect, an embodiment of the present application provides a machine-readable storage medium, on which instructions are stored, wherein the instructions are used to enable a machine to execute the above-mentioned vehicle control method.

[0035] In a fifth aspect, an embodiment of the present application provides a computer program product. When the instructions in the computer program product are executed by a processor of a vehicle, the vehicle executes the vehicle control method as described above.

[0036] In the embodiment of the present application, the current concentration ratio of the target fuel in the fuel pumped out of the fuel tank is identified, and the target fuel is any one of the at least one fuel; the target air-fuel ratio is determined according to the current concentration ratio; the target air-fuel ratio is the air-fuel ratio that satisfies the complete combustion of the fuel; the first injection amount of the fuel rail injector is determined according to the target air-fuel ratio and the current value of the parameter group; the parameter group at least includes the intake pressure of the engine, the intake temperature of the engine, and the engine speed; the fuel rail injector is controlled to work according to the first injection amount, and the fuel is injected into the engine through the fuel rail injector to control the ignition operation of the engine. In this way, by adopting a set of fuel supply systems, the required injection amount of the fuel rail injector corresponding to the current concentration ratio is determined under different fuel concentration ratio conditions, and the fuel rail injector is controlled to work according to the required injection amount, thereby realizing the vehicle start, and the vehicle can be quickly started under different fuel concentration ratio conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is one of the flowcharts of the vehicle control method provided in the embodiment of the present application;

[0038] Figure 2 It is a schematic diagram of the arbitrary ratio mixed fuel supply and concentration signal transmission path provided in the embodiment of the present application;

[0039] Figure 3 This is the second flow chart of the vehicle control method provided in the embodiment of the present application;

[0040] Figure 4 This is the third flow chart of the vehicle control method provided in the embodiment of the present application;

[0041] Figure 5 is a schematic diagram of the structure of a vehicle control device provided in an embodiment of the present application;

[0042] Figure 6 It is a schematic diagram of the structure of a vehicle provided in an embodiment of the present application. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0044] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way are interchangeable where appropriate, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0045] The vehicle control method, device, equipment, medium and product provided in the embodiments of the present application are described in detail below with reference to the accompanying drawings through specific embodiments and their application scenarios.

[0046] See also Figure 1 , is one of the flow charts of the vehicle control method provided in the embodiment of the present application, the method is applied to a vehicle, the vehicle comprises a fuel tank, a fuel rail injector and an engine, the fuel tank can be filled with at least one fuel, and the fuel rail injector is used to inject the fuel into the engine. Figure 1 As shown, the vehicle control method includes the following steps S100 to S400.

[0047] Step S100: identifying the current concentration ratio of the target fuel in the fuel pumped out of the fuel tank, where the target fuel is any one of the at least one fuel.

[0048] In the embodiment of the present application, the target fuel can be understood as any fuel pumped out of the fuel tank, wherein the fuel pumped out of the fuel tank can be a single fuel or a mixed fuel of multiple fuels. In one example, the target fuel can be methanol fuel. In another example, the target fuel can also be methanol fuel and gasoline fuel.

[0049] In an embodiment of the present application, the current concentration ratio of the target fuel can be identified by a fuel identification device. In one example, the fuel identification device can be a flexible fuel sensor. A flexible fuel sensor is a device that can detect and monitor fuel characteristics, such as fuel concentration, temperature, and pressure.

[0050] In the embodiment of the present application, the fuel concentration identification device can be arranged between the fuel tank and the fuel rail injector to facilitate the identification of the concentration of methanol or gasoline in the fuel pumped from the fuel tank. Preferably, the fuel concentration identification device can be arranged close to the fuel rail injector to facilitate the concentration signal identified by the device.

[0051] Step S200: determining a target air-fuel ratio according to the current concentration ratio; the target air-fuel ratio is an air-fuel ratio that satisfies complete combustion of the fuel.

[0052] In the embodiment of the present application, the air-fuel ratio represents the mass ratio of air to fuel entering the engine. The target air-fuel ratio can be understood as the air-fuel ratio required to ensure complete combustion of the fuel pumped from the fuel tank.

[0053] In the embodiment of the present application, for a complete combustion reaction, the amount of air required can be calculated using a chemical equation. According to the molecular formula of the fuel, the number of moles of oxygen required per mole of fuel is calculated, and then multiplied by the mole fraction of oxygen in the air (about 21%) to obtain the number of moles of air. Using the molar masses of air and fuel, the molar ratio is converted into a mass ratio, and the target air-fuel ratio can be determined.

[0054] In the embodiment of the present application, the fuel pumped out from the fuel tank is a mixed fuel including methanol fuel and gasoline fuel. After determining the current concentration ratio of the fuel, the mass of each fuel in the fuel can also be determined according to the fuel concentration ratio and the total mass of the fuel. Then, the air mass required for each fuel to be completely burned is determined respectively, and finally, the ratio of the air mass to the fuel mass is determined as the target air-fuel ratio.

[0055] Step S300: determining a first fuel injection amount of the fuel rail injector according to a target air-fuel ratio and a current value of a parameter group; the parameter group includes at least an intake pressure of the engine, an intake temperature of the engine, and an engine speed.

[0056] In the embodiment of the present application, the target air-fuel ratio can be understood as the air-fuel ratio required to meet the complete combustion of the fuel pumped from the fuel tank. The injection amount can be understood as the amount of fuel injected by the fuel rail injector per unit time. Before determining the first injection amount of the fuel rail injector, the current value of the engine parameter group is first obtained. The parameter group may include but is not limited to the engine intake pressure, the engine intake temperature, the engine displacement, and the engine speed. The engine intake amount can be determined based on the engine displacement, the engine speed, and the intake temperature. The engine intake amount can be understood as the volume of air entering the engine cylinder within a specific time.

[0057] In the embodiment of the present application, determining the first injection amount of the rail injector according to the target air-fuel ratio and the current value of the parameter group can be understood as the theoretical value of the injection amount of the rail injector under the current value of the parameter group and the target air-fuel ratio.

[0058] In the embodiment of the present application, the intake air volume of the engine can be determined first according to the current value of the engine parameter group, and then the ratio of the intake air volume to the target air-fuel ratio is determined as the first fuel injection volume.

[0059] Step S400: controlling the operation of the fuel rail injector according to the first fuel injection amount, injecting fuel into the engine through the fuel rail injector, and controlling the engine to ignite and operate.

[0060] In the embodiment of the present application, after determining the first injection amount of the fuel rail injector, the parameters of the fuel rail injector can be set according to the first injection amount, so that the actual injection amount of the fuel rail injector matches the injection amount determined in step S300. When receiving the working signal, the fuel rail injector injects fuel into the cylinder of the engine based on the injection amount, and the engine realizes ignition operation.

[0061] Through the above steps S100-S400, the current concentration ratio of the target fuel in the fuel pumped out of the fuel tank is identified, and the target fuel is any one of the at least one fuel; the target air-fuel ratio is determined according to the current concentration ratio; the target air-fuel ratio is the air-fuel ratio that satisfies the complete combustion of the fuel; the first injection amount of the fuel rail injector is determined according to the target air-fuel ratio and the current value of the parameter group; the parameter group at least includes the intake pressure of the engine, the intake temperature of the engine and the engine speed; the fuel rail injector is controlled to work according to the first injection amount, and the fuel is injected into the engine through the fuel rail injector to control the engine ignition operation. In this way, by determining the first injection amount required by the fuel rail injector corresponding to the current concentration ratio under different fuel concentration ratios, and controlling the fuel rail injector to work according to the required first injection amount, and then realizing the vehicle starting, the vehicle can be quickly started under different fuel concentration ratios.

[0062] In some implementations, identifying a current concentration ratio of the target fuel in the fuel pumped out of the fuel tank includes:

[0063] Obtaining the dielectric constant and conductivity of the target fuel;

[0064] Substitute the dielectric constant into the first equation and the conductivity into the second equation to obtain a system of equations; the first equation represents the corresponding relationship between the dielectric constant and the concentration of the target fuel, and the second equation represents the corresponding relationship between the conductivity and the concentration of the target fuel;

[0065] Solve the equations to obtain the current concentration ratio of the target fuel.

[0066] Specifically, the current concentration ratio of the target fuel can be identified by the fuel identification device. In one example, the fuel identification device can be a flexible fuel sensor. A flexible fuel sensor is a device that can detect and monitor fuel characteristics, such as fuel concentration, temperature, and pressure.

[0067] In the embodiment of the present application, the dielectric constant is a physical quantity that describes the electrical properties of a material, reflecting the ability of the material to store electrical energy in an electric field. The electrical conductivity is a physical quantity that measures the electrical conductivity of a material. The first equation is used to characterize the corresponding relationship between the dielectric constant and the concentration of the target fuel, and the second equation is used to characterize the corresponding relationship between the electrical conductivity and the concentration of the target fuel.

[0068] In the embodiment of the present application, the dielectric constant can be directly measured by a dielectric constant measuring device, or the dielectric constant can be calculated by measuring the capacitance of a capacitor of the mixed fuel and calculating the dielectric constant based on the capacitance. In the present application, the method for obtaining the dielectric constant is not limited.

[0069] In the embodiment of the present application, it is assumed that the fuel pumped out of the fuel tank is a mixed fuel, and the conductivity of the mixed fuel is the weighted average of the conductivity of each component, and the dielectric constant is the weighted average of the dielectric constant of each component. Substituting the dielectric constant into the first equation and the conductivity into the second equation, the corresponding relationship between the conductivity and concentration of the target fuel and the corresponding relationship between the dielectric constant and concentration of the target fuel can be obtained. Then, the equation group is solved to obtain the concentration of each fuel.

[0070] In this embodiment, by determining the current concentration ratio of the target fuel according to the corresponding relationships between the dielectric constant and the conductivity of the target fuel and the concentration, the accuracy of determining the current concentration ratio can be improved.

[0071] In some implementations, determining the target air-fuel ratio according to the current concentration ratio includes:

[0072] Determine the quality of the fuel based on the current concentration ratio;

[0073] Obtain the air mass required for complete combustion of fuel;

[0074] The ratio of the mass of air to the mass of fuel is determined as a target air-fuel ratio.

[0075] Specifically, the air-fuel ratio indicates the mass ratio of air to fuel entering the engine. The target air-fuel ratio can be understood as the air-fuel ratio required to ensure complete combustion of the fuel pumped from the fuel tank.

[0076] In the embodiment of the present application, the fuel pumped out from the fuel tank is a mixed fuel including methanol fuel and gasoline fuel. After determining the current concentration ratio of the fuel, the mass of each fuel in the fuel can be determined according to the fuel concentration ratio and the total mass of the fuel. Then, the air mass required for each fuel to be completely burned is determined respectively, and finally, the ratio of the air mass to the fuel mass is determined as the target air-fuel ratio.

[0077] In the embodiment of the present application, after the target air-fuel ratio is obtained by calculation, the target air-fuel ratio can also be corrected based on the fuel calorific value and parameters such as atmospheric pressure. The fuel calorific value can be understood as the heat released by a unit mass or unit volume of fuel when it is completely burned. The comprehensive calorific value of the mixed fuel can be calculated based on the fuel calorific value and mass fraction of each fuel in the mixed fuel. The ratio of the fuel calorific value of the mixed fuel to the calorific value of the air is the air-fuel ratio.

[0078] In the embodiment of the present application, the atmospheric pressure usually does not directly affect the calculation of the air-fuel ratio, but it does affect the density of the air. When calculating, the density of the air can be calculated in conjunction with the atmospheric pressure to obtain the air mass.

[0079] In this embodiment, by determining the target air-fuel ratio of the engine according to the detected current concentration ratio, the target air-fuel ratio can be updated according to the real-time detected data, thereby improving the accuracy of the calculation.

[0080] In some embodiments, determining a first fuel injection amount of a rail injector according to a target air-fuel ratio and a current value of a parameter group includes:

[0081] determining an intake air volume of the engine according to current values ​​of the parameter group;

[0082] The ratio of the intake air amount to the target air-fuel ratio is determined as the first fuel injection amount.

[0083] Specifically, the injection amount can be understood as the amount of fuel injected by the rail injector per unit time. Before determining the first injection amount of the rail injector, first obtain the current value of the engine parameter group, which may include but is not limited to the engine intake pressure, engine intake temperature, engine displacement, and engine speed. The engine intake amount can be determined based on the engine displacement, engine speed, and intake temperature. The engine intake amount can be understood as the mass of air entering the engine cylinder within a specific time.

[0084] In one example, the intake volume of the engine can be calculated first, and then the air mass can be determined based on the intake volume and air density. The intake volume of the engine can satisfy:

[0085]

[0086] Among them, Q represents the intake volume of the engine, P represents the intake manifold pressure of the engine, V d represents engine displacement, N represents engine speed, R represents gas constant, and T represents absolute temperature.

[0087] In this embodiment, by determining the intake air amount according to the current value of the acquired parameter group, and determining the first injection amount of the fuel rail injector by step-by-step calculation, calculations can be performed based on real-time acquired data, making the calculation results more accurate and flexible.

[0088] In some embodiments, after controlling the operation of the fuel rail injector according to the first fuel injection amount, injecting fuel into the engine through the fuel rail injector, and controlling the engine to ignite and run, the vehicle control method further includes:

[0089] Obtaining the output torque of the engine;

[0090] The second fuel injection amount is determined according to the output torque and the target torque corresponding to the current concentration ratio, and the operation of the fuel rail injector is controlled according to the second fuel injection amount.

[0091] Specifically, the process of the engine ignition operation after the fuel rail injector sprays fuel into the engine can be understood as follows: after the engine control unit receives the ignition signal, the fuel rail injector starts to spray fuel, spraying the fuel into the cylinder or intake manifold in a mist form to mix with the air. During the intake stroke of the engine, the engine valve opens and external air is sucked into the cylinder. The injected fuel mixes with the intake air to form a combustible mixture. The piston moves upward in the cylinder, compressing the mixture to increase its temperature and pressure. At the end of the compression stroke, the ignition coil releases a high-voltage current, and the spark plug generates a spark to ignite the compressed mixture. The mixture of fuel and air burns rapidly, generating high-temperature and high-pressure gas, which pushes the piston downward to generate power.

[0092] In the embodiment of the present application, the output torque of the engine can be understood as the rotational force generated by the engine when it is running. After obtaining the output torque of the engine, the output torque of the engine is compared with the target torque corresponding to the current concentration ratio. When the difference between the output torque and the target torque is not within the preset range, the injection amount of the fuel rail injector is adjusted to obtain the second injection amount. The engine ignition operation is then controlled according to the second injection amount. This cycle of detection and judgment is repeated until the difference between the output torque and the target torque is within the preset range. The preset range can be understood as the allowable range of the difference between the output torque and the target torque that is preset.

[0093] In this embodiment, the accuracy of the engine ignition operation can be improved by adjusting the injection amount of the fuel rail injector according to the output torque of the engine after the engine is ignited.

[0094] In some implementations, before determining the second fuel injection amount according to the output torque and the target torque corresponding to the current concentration ratio, the vehicle control method further includes:

[0095] Obtaining a correspondence between a preset concentration ratio of a target fuel, a parameter group and a torque of an engine;

[0096] According to the current concentration ratio, the current value of the parameter group and the corresponding relationship, the target torque corresponding to the current concentration ratio is determined.

[0097] Specifically, before determining the second injection amount according to the output torque and the target torque corresponding to the current concentration ratio, it is necessary to first determine the preset concentration ratio of the target fuel, the corresponding relationship between the parameter group and the torque of the engine. The parameter group includes at least the intake pressure of the engine, the intake temperature of the engine and the engine speed. In one example, the engine torque corresponding to each group of values ​​corresponding to each concentration ratio and parameter group can be determined based on historical data, and then the corresponding relationship between the preset concentration ratio, parameter group and the torque of the engine can be derived. In another example, the model can combine the current engine speed and the opening of the throttle body under the current concentration ratio to determine the torque demand percentage at the speed, and then calculate the operating demand torque, that is, the target torque.

[0098] In this embodiment, by determining the target torque corresponding to the current concentration ratio according to the corresponding relationship between the current value of the parameter group and the torque, it can be used to correct the injection amount of the fuel rail injector to improve the efficiency of the engine operation.

[0099] See also Figure 2 , is a schematic diagram of the arbitrary ratio mixed fuel supply and concentration signal transmission path provided in the embodiment of the present application. Figure 2As shown, the vehicle of the embodiment of the present application includes a fuel tank, a fuel concentration identification device, an engine and an electronic control unit (ECU). When the fuel is pumped out of the fuel tank, the fuel concentration identification device detects the concentration ratio of the fuel and sends a concentration ratio signal to the ECU. After receiving the concentration ratio signal, the ECU determines the control software corresponding to the concentration ratio according to the current concentration ratio signal, and uses the corresponding control software to control the operation of the engine. The control software can determine the target air-fuel ratio according to the current concentration ratio, determine the second injection amount of the fuel rail injector according to the target air-fuel ratio and the current value of the parameter group, and finally control the operation of the fuel rail injector according to the second injection amount, and inject fuel into the engine through the fuel rail injector to control the engine ignition operation.

[0100] See also Figure 3 , is the second flow chart of the vehicle control method provided in the embodiment of the present application. Figure 3 As shown, the embodiment of the present application includes the following steps:

[0101] Step S301: When the fuel pump pumps out fuel of any blending ratio from the fuel tank, the concentration ratio of methanol fuel or gasoline fuel in the mixed fuel is identified in real time through the fuel identification device.

[0102] Step S302: Determine the control software corresponding to the concentration ratio according to the received signal of the concentration ratio of methanol fuel or gasoline fuel in the mixed fuel.

[0103] Step S303: The engine can run smoothly by using control software corresponding to the concentration ratio of methanol fuel or gasoline fuel; when the fuel ratio in the fuel tank changes, or when the methanol concentration or gasoline concentration identified by the fuel concentration identification device changes, the engine control software will also switch according to the received fuel concentration signal.

[0104] In this specific embodiment, the specific implementation can refer to the above description and will not be repeated here.

[0105] See also Figure 4 , is the third flow chart of the vehicle control method provided in the embodiment of the present application. Figure 4As shown, the vehicle control method provided by the embodiment of the present application takes methanol fuel in a mixed fuel as an example. The methanol concentration signal of the fuel concentration identification device is obtained, and the concentration ratio of the methanol fuel in the mixed fuel is identified. When identifying, first determine whether the methanol ratio in the mixed fuel is 0%. When the methanol ratio is 0%, start the control software corresponding to the methanol ratio of 0%; when the methanol ratio is not 0%, determine whether the methanol ratio in the mixed fuel is 100%. When the methanol ratio is 100%, start the control software corresponding to the methanol ratio of 100%. When the methanol ratio is not 100%, compare the methanol ratio in the mixed fuel with the preset methanol concentration ratio. When the methanol ratio in the mixed fuel is close to the preset methanol concentration ratio, start the control software corresponding to the preset methanol concentration ratio. When the methanol ratio in the mixed fuel is not close to the preset methanol concentration ratio, interpolation calculation is used, and the control software after interpolation calculation is started.

[0106] The judgment steps provided in the embodiments of the present application are for reference only, and the present application does not limit the specific judgment order.

[0107] See also Figure 5 , is a schematic diagram of the structure of a vehicle control device provided in an embodiment of the present application. In a second aspect of an embodiment of the present application, a vehicle control device 50 is provided. The vehicle control device 50 includes:

[0108] an identification module 51, for identifying a current concentration ratio of a target fuel in the fuel pumped out of the fuel tank, the target fuel being any one of the at least one fuel;

[0109] The first determination module 52 is used to determine a target air-fuel ratio according to the current concentration ratio; the target air-fuel ratio is an air-fuel ratio that satisfies complete combustion of the fuel;

[0110] A second determination module 53 is used to determine a first fuel injection amount of the fuel rail injector according to a target air-fuel ratio and a current value of a parameter group; the parameter group includes at least an intake pressure of the engine, an intake temperature of the engine, and an engine speed;

[0111] The control module 54 is used to control the operation of the fuel rail injector according to the first fuel injection amount, inject fuel into the engine through the fuel rail injector, and control the ignition operation of the engine.

[0112] The vehicle control device 50 provided in the second aspect of the embodiment of the present application can implement the various processes implemented in the above-mentioned method embodiment and achieve the same beneficial effects. To avoid repetition, it will not be repeated here.

[0113] See also Figure 6, is a schematic diagram of the structure of a vehicle provided in an embodiment of the present application. An embodiment of the present application provides a vehicle 6000, including a processor 6100 and a memory 6200. The memory 6200 stores machine executable instructions that can be executed by the processor 6100. The processor 6100 can execute the machine executable instructions to implement the above-mentioned vehicle control method.

[0114] A fourth aspect of an embodiment of the present application provides a machine-readable storage medium, on which instructions are stored. When the instructions are executed by a processor, the processor implements the above-mentioned vehicle control method.

[0115] In some implementations, the embodiments of the present application further provide a computer program product, including a computer program, which implements the vehicle control method according to the above implementation when executed by a processor.

[0116] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented in one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that include computer-usable program code.

[0117] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 These computer program instructions can also be stored in a computer-readable memory that can guide a computer or other programmable data processing device to work in a specific way, so that the instructions stored in the computer-readable memory produce a product including an instruction device, which implements the functions specified in the process. Figure 1 A process or multiple processes and / or boxes Figure 1These computer program instructions can also be loaded onto a computer or other programmable data processing device, so that a series of operation steps are executed on the computer or other programmable device to produce a computer-implemented process, so that the instructions executed on the computer or other programmable device provide for implementing the process in the process. Figure 1 A process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0118] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0119] The memory may include non-permanent memory in a computer-readable medium, random access memory (RAM) and / or non-volatile memory in the form of read-only memory (ROM) or flash RAM. The memory is an example of a computer-readable medium.

[0120] Computer readable media include permanent and non-permanent, removable and non-removable media that can be implemented by any method or technology to store information. Information can be computer readable instructions, data structures, program modules or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, compact disk read-only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device. As defined herein, computer readable media does not include temporary computer readable media (transitory media), such as modulated data signals and carrier waves.

[0121] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0122] The above are only embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included within the scope of the claims of the present application.

[0123] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A vehicle control method, characterized in that: The vehicle comprises a fuel tank, a fuel rail injector and an engine, the fuel tank can be filled with at least one fuel, the fuel rail injector is used to inject the fuel into the engine, and the control method comprises: identifying a current concentration ratio of a target fuel in the fuel pumped out of the fuel tank, the target fuel being any one of the at least one fuel; Determine a target air-fuel ratio according to the current concentration ratio; the target air-fuel ratio is an air-fuel ratio that satisfies complete combustion of the fuel; determining a first fuel injection amount of the fuel rail injector according to the target air-fuel ratio and a current value of a parameter group; the parameter group includes at least an intake pressure of the engine, an intake temperature of the engine, and an engine speed; The operation of the fuel rail injector is controlled according to the first fuel injection amount, the fuel is injected into the engine through the fuel rail injector, and the engine is controlled to ignite and operate.

2. The vehicle control method according to claim 1, characterized in that: The identifying the current concentration ratio of the target fuel in the fuel pumped out of the fuel tank includes: Obtaining the dielectric constant and conductivity of the target fuel; Substituting the dielectric constant into the first equation and the conductivity into the second equation to obtain a system of equations; the first equation represents the corresponding relationship between the dielectric constant and the concentration of the target fuel, and the second equation represents the corresponding relationship between the conductivity and the concentration of the target fuel; The equation group is solved to obtain the current concentration ratio of the target fuel.

3. The vehicle control method according to claim 1, characterized in that: The determining the target air-fuel ratio according to the current concentration ratio includes: determining the mass of the fuel according to the current concentration ratio; Obtaining the air mass required for complete combustion of the fuel; The ratio of the mass of the air to the mass of the fuel is determined as the target air-fuel ratio.

4. The vehicle control method according to claim 1, characterized in that: The step of determining a first fuel injection amount of the fuel rail injector according to the target air-fuel ratio and the current value of the parameter group includes: determining an intake air volume of the engine according to a current value of the parameter group; The ratio of the intake air amount to the target air-fuel ratio is determined as the first fuel injection amount.

5. The vehicle control method according to claim 1, characterized in that: After controlling the operation of the fuel rail injector according to the first fuel injection amount, injecting the fuel into the engine through the fuel rail injector, and controlling the engine to ignite and run, the vehicle control method further includes: obtaining an output torque of the engine; A second fuel injection amount is determined according to the output torque and a target torque corresponding to the current concentration ratio, and the operation of the fuel rail injector is controlled according to the second fuel injection amount.

6. The vehicle control method according to claim 5, characterized in that: Before determining the second fuel injection amount according to the output torque and the target torque corresponding to the current concentration ratio, the vehicle control method further includes: Acquiring a preset concentration ratio of the target fuel, a corresponding relationship between the parameter group and the torque of the engine; A target torque corresponding to the current concentration ratio is determined according to the current concentration ratio, the current value of the parameter group and the corresponding relationship.

7. A vehicle control device, characterized in that: The vehicle comprises a fuel tank, a fuel rail injector and an engine, wherein the fuel tank can be filled with at least one fuel, the fuel rail injector is used to inject the fuel into the engine, and the vehicle control device comprises: an identification module, used for identifying a current concentration ratio of a target fuel in the fuel pumped out of the fuel tank, wherein the target fuel is any one of the at least one fuel; A first determination module is used to determine a target air-fuel ratio according to the current concentration ratio; the target air-fuel ratio is an air-fuel ratio that satisfies complete combustion of the fuel; a second determination module, configured to determine a first fuel injection amount of the fuel rail injector according to the target air-fuel ratio and a current value of a parameter group; the parameter group at least includes an intake pressure of the engine, an intake temperature of the engine, and an engine speed; A control module is used to control the operation of the fuel rail injector according to the first fuel injection amount, inject the fuel into the engine through the fuel rail injector, and control the ignition operation of the engine.

8. A vehicle, characterized in that: include: a memory configured to store instructions; as well as A processor is configured to call the instructions from the memory and implement the vehicle control method according to any one of claims 1 to 6 when executing the instructions.

9. A machine-readable storage medium, characterized in that: The machine-readable storage medium stores instructions for causing a machine to execute the vehicle control method according to any one of claims 1 to 6.

10. A computer program product, characterized in that When the instructions in the computer program product are executed by a processor of a vehicle, the vehicle is caused to execute the vehicle control method as described in any one of claims 1 to 6.

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