Fuel proportion calculation method and system for flexible fuel vehicle, vehicle and equipment

Abstract

The invention discloses a fuel proportion calculation method and system for a flexible fuel vehicle, the vehicle and equipment. The fuel proportion calculation method for the flexible fuel vehicle comprises the steps that the fuel injection amount of flexible fuel in an engine under the current operation working condition is obtained; obtaining a difference between the fuel injection amount and a reference fuel injection amount; according to the difference between the fuel injection amount and the reference fuel injection amount, the mixing proportion of the flexible fuel is obtained, and different differences correspond to the mixing proportion of various different flexible fuels under different operation conditions. By adopting the embodiment of the invention, the mixing proportion of the flexible fuel can be accurately obtained for a vehicle which is not provided with a sensor for detecting the mixing proportion of the flexible fuel, so that the cost of the vehicle is saved, the driving range of the vehicle can be accurately obtained, and the use experience of the vehicle is improved.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a method, system, vehicle and equipment for calculating the fuel ratio of a flexible fuel vehicle. Background Art

[0002] A flexible-fuel vehicle is a vehicle equipped with a flexible-fuel engine (engine). A flexible-fuel vehicle can use two or more fuels (such as gasoline, methanol, ethanol, etc.) mixed in any proportion.

[0003] For flexible-fuel vehicles, different types of fuels are added to the same fuel tank, and the fuel tank is usually not equipped with a fuel proportion sensor. Therefore, the proportion of each fuel in the fuel tank cannot be determined. Since different types of fuels have different energy consumption values, the vehicle's endurance cannot be determined in time, and the endurance cannot be updated in time, thus affecting the vehicle's user experience. Summary of the invention

[0004] Based on this, it is necessary to provide a fuel ratio calculation method, system, vehicle and equipment for flexible fuel vehicles to address the above technical problems. For vehicles that are not equipped with sensors for detecting the mixing ratio of flexible fuels, the mixing ratio of flexible fuels can also be accurately obtained, which not only saves the cost of the vehicle, but also quickly and accurately obtains the vehicle's cruising range, allowing users to quickly and intuitively feel the vehicle's cruising range, thereby effectively improving the vehicle's usage experience.

[0005] In a first aspect, a method for calculating a fuel ratio of a flexible fuel vehicle is provided, comprising:

[0006] Obtaining a fuel injection amount of a flexible fuel in an engine under current operating conditions;

[0007] obtaining a difference between the fuel injection amount and a reference fuel injection amount;

[0008] The mixing ratio of the flexible fuel is obtained according to the difference between the fuel injection amount and the reference fuel injection amount, wherein different differences correspond to mixing ratios of a plurality of different flexible fuels under different operating conditions.

[0009] In some examples, the obtaining of the difference between the fuel injection amount and a reference fuel injection amount, and obtaining the mixing ratio of the flexible fuel according to the difference between the fuel injection amount and the reference fuel injection amount, wherein different differences correspond to a plurality of different mixing ratios of the flexible fuels under different operating conditions, including:

[0010] Obtaining a fuel injection amount of a flexible fuel in an engine under current operating conditions;

[0011] obtaining a fuel injection amount correction coefficient according to a difference between the fuel injection amount and a reference fuel injection amount, wherein the reference fuel injection amount is a fuel injection amount of a reference fuel in the engine under the current operating condition;

[0012] According to the fuel injection amount correction coefficient, a correction coefficient table is queried to obtain the mixing ratio of the flexible fuel, wherein the correction coefficient table pre-stores the corresponding relationship between the mixing ratios of multiple different flexible fuels and the fuel injection amount correction coefficient under different operating conditions.

[0013] In some examples, before searching a correction coefficient table according to the fuel injection amount correction coefficient to obtain the mixing ratio of the flexible fuel, the method further includes:

[0014] Under any operating condition, calibrate the fuel injection quantity of the reference fuel in the engine;

[0015] Under any of the operating conditions, obtaining fuel injection amounts of flexible fuels with multiple different mixing ratios in the engine;

[0016] Obtaining fuel injection amount correction coefficients of the flexible fuels with a plurality of different mixing ratios under the any operating condition according to differences between the fuel injection amount of the reference fuel in the engine under the any operating condition and the fuel injection amounts of the flexible fuels with a plurality of different mixing ratios in the engine;

[0017] The correction coefficient table is obtained according to a plurality of flexible fuels with different mixing ratios under any operating condition and corresponding fuel injection quantity correction coefficients.

[0018] In some examples, obtaining a fuel injection amount correction coefficient according to a difference between the fuel injection amount and a reference fuel injection amount includes:

[0019] According to the fuel injection amount of the reference fuel in the engine calibrated under any operating condition, obtaining the fuel injection amount of the reference fuel in the engine under the current operating condition;

[0020] According to the difference between the fuel injection amount of the flexible fuel in the engine under the current operating condition and the fuel injection amount of the reference fuel in the engine under the current operating condition, a fuel injection amount correction coefficient of the flexible fuel in the engine under the current operating condition is obtained.

[0021] In some examples, under different operating conditions, the intake amount of the engine is different, and the air-fuel ratio is a target air-fuel ratio.

[0022] In some examples, after the correction coefficient table is searched according to the fuel injection amount correction coefficient to obtain the mixing ratio of the flexible fuel, the method further includes:

[0023] Get the total amount of fuel in the fuel tank;

[0024] The driving range of the vehicle is obtained according to the energy consumption value of each fuel in the fuel tank and the mixing ratio.

[0025] In some examples, obtaining the total amount of fuel in the fuel tank includes:

[0026] Obtaining a fuel level value in the fuel tank;

[0027] A fuel volume is obtained as a function of the fuel fill level value, wherein the fuel volume characterizes the total amount of fuel.

[0028] In some examples, before obtaining the fuel volume according to the fuel level value, the method further includes:

[0029] The fuel level value is filtered.

[0030] In a second aspect, a fuel ratio calculation system for a flexible fuel vehicle is provided, comprising:

[0031] An acquisition module, used for obtaining a fuel injection amount of a flexible fuel in an engine under a current operating condition;

[0032] a difference determination module for obtaining a difference between the fuel injection amount and a reference fuel injection amount;

[0033] The calculation module is used to obtain the mixing ratio of the flexible fuel according to the difference between the fuel injection amount and the reference fuel injection amount, wherein different differences correspond to the mixing ratios of multiple different flexible fuels under different operating conditions.

[0034] In a third aspect, a vehicle is provided, comprising: a fuel ratio calculation system for a flexible fuel vehicle according to the second aspect.

[0035] In a fourth aspect, a computer device is provided, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the method for calculating the fuel ratio of a flexible fuel vehicle according to the first aspect is implemented.

[0036] According to the embodiment of the present application, during the operation of the vehicle, the fuel injection amount of the flexible fuel in the engine under the current operating condition is obtained, the difference between the fuel injection amount and the reference fuel injection amount is obtained, and the mixing ratio of the flexible fuel is obtained according to the difference between the fuel injection amount and the reference fuel injection amount, wherein different differences correspond to the mixing ratios of multiple different flexible fuels under different operating conditions, so that the vehicle's driving range can be quickly and accurately determined according to the mixing ratio of the fuel in the fuel tank. Therefore, for a vehicle that is not equipped with a sensor for detecting the mixing ratio of the flexible fuel, the mixing ratio of the flexible fuel can also be accurately obtained, which not only saves the cost of the vehicle, but also quickly and accurately obtains the vehicle's driving range. Compared with the prior art that cannot determine the proportion of each fuel in the fuel tank, and thus cannot determine the driving range and cannot update the driving range display in time, the driving range can be updated and displayed in time, so that the user can quickly and intuitively feel the vehicle's driving range, thereby effectively improving the vehicle's use experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0038] Figure 1 A flow chart of a method for calculating the fuel ratio of a flexible fuel vehicle provided in an embodiment of the present application;

[0039] Figure 2 A flow chart of a method for calculating a fuel ratio of a flexible fuel vehicle provided in another embodiment of the present application;

[0040] Figure 3 A structural block diagram of a fuel ratio calculation system for a flexible fuel vehicle provided in an embodiment of the present application;

[0041] Figure 4 A structural block diagram of a computer device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0042] The present application is further described in detail below in conjunction with the embodiments and drawings. It is to be understood that the specific embodiments described herein are only used to explain the relevant application, rather than to limit the application. It is also necessary to explain that, for ease of description, only the parts related to the application are shown in the drawings.

[0043] It should be noted that, in the absence of conflict, the embodiments of the present application, that is, the features of the embodiments, can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0044] The following describes in detail the fuel ratio calculation method, system, vehicle and device for a flexible fuel vehicle according to an embodiment of the present application in conjunction with the accompanying drawings.

[0045] Before describing the fuel ratio calculation method, system, vehicle and equipment of a flexible-fuel vehicle according to an embodiment of the present application, the flexible-fuel vehicle is first explained. A flexible-fuel vehicle is a vehicle equipped with a flexible-fuel engine (engine). A flexible-fuel vehicle is a vehicle that can use two or more fuels (such as gasoline, methanol, ethanol, etc.) mixed in any proportion. These two or more fuels do not need to be added to different fuel tanks (fuel containers) separately, but are added to the same fuel tank of the vehicle and mixed in the fuel tank, that is, the mixed fuel is in the same fuel tank.

[0046] Figure 1 FIG. 1 is a flow chart of a method for calculating the fuel ratio of a flexible fuel vehicle according to an embodiment of the present application. Figure 1 As shown, according to an embodiment of the present application, a method for calculating the fuel ratio of a flexible fuel vehicle includes the following steps:

[0047] S101: Obtaining a fuel injection amount of a flexible fuel in an engine under a current operating condition.

[0048] Among them, under different operating conditions, the intake volume of the engine is different, and the air-fuel ratio is the target air-fuel ratio, and the target air-fuel ratio is usually 1.

[0049] Specifically, during the operation of the vehicle, the flexible fuel in the vehicle's fuel tank is provided to the vehicle's engine. Under different operating conditions, the engine requires different intake air volumes, and the combustion effect is usually good when the air-fuel ratio reaches 1. Therefore, according to the intake air volume requirement under the current operating condition, the fuel injection amount of the flexible fuel in the engine under the current operating condition is obtained. That is, the fuel injection amount of the flexible fuel at the target air-fuel ratio under the intake air volume requirement under the current operating condition is obtained.

[0050] It should be noted that under the same operating condition, that is, under the same intake air volume and target air-fuel ratio, the fuel injection amount is usually different as the mixing ratio of the flexible fuel is different.

[0051] S102: Obtaining a difference between the fuel injection amount and a reference fuel injection amount.

[0052] S103: Obtaining a mixing ratio of the flexible fuel according to a difference between the fuel injection amount and a reference fuel injection amount, wherein different differences correspond to mixing ratios of a plurality of different flexible fuels under different operating conditions.

[0053] In a specific example, the fuel injection amount correction coefficient may be obtained according to the difference between the fuel injection amount and the reference fuel injection amount, wherein the reference fuel injection amount is the fuel injection amount of the reference fuel in the engine under the current operating condition.

[0054] In one embodiment of the present application, a fuel injection quantity correction coefficient is obtained based on the difference between the fuel injection quantity and the baseline fuel injection quantity, including: obtaining the fuel injection quantity of the baseline fuel in the engine under the current operating condition based on the fuel injection quantity of the baseline fuel in the engine calibrated under any operating condition; obtaining the fuel injection quantity correction coefficient of the flexible fuel in the engine under the current operating condition based on the difference between the fuel injection quantity of the flexible fuel in the engine under the current operating condition and the fuel injection quantity of the baseline fuel in the engine under the current operating condition.

[0055] Specifically, the fuel injection amount of the reference fuel in the engine under any operating condition is pre-calibrated. As a specific example, the reference fuel is gasoline, and gasoline can be used as the fuel of the engine in the fuel injection model to calculate the fuel injection amount under different intake amounts and target air-fuel ratios. Thus, the fuel injection amount under different intake amounts and target air-fuel ratios can be calibrated, that is, the fuel injection amount of gasoline in the engine under a variety of different operating conditions can be calibrated.

[0056] Taking gasoline as an example of the benchmark fuel, after obtaining the fuel injection amount of gasoline in the engine under the current operating conditions, it is compared with the fuel injection amount of the flexible fuel in the engine under the current operating conditions obtained in step S101, and the fuel injection amount correction coefficient of the flexible fuel is matched according to the difference between the two.

[0057] For example: under the current operating condition, the obtained fuel injection amount of the flexible fuel in the engine is 6, and under this operating condition, the obtained fuel injection amount of the gasoline in the engine is 5, then the fuel injection amount correction factor of the flexible fuel can be: the fuel injection amount of the flexible fuel / the fuel injection amount of the gasoline, such as 6 / 5=1.2. Another example: under the current operating condition, the obtained fuel injection amount of the flexible fuel in the engine is 4, and under this operating condition, the obtained fuel injection amount of the gasoline in the engine is 5, then the fuel injection amount correction factor of the flexible fuel is 4 / 5=0.8.

[0058] According to the fuel injection amount correction coefficient, the correction coefficient table is queried to obtain the mixing ratio of the flexible fuel, wherein the correction coefficient table pre-stores the corresponding relationship between the mixing ratios of multiple different flexible fuels and the fuel injection amount correction coefficient under different operating conditions.

[0059] The correction coefficient table is obtained in advance. In a specific example, Figure 2As shown, before the correction coefficient table is searched according to the fuel injection amount correction coefficient to obtain the mixing ratio of the flexible fuel, the method further includes:

[0060] S201: Under any operating condition, calibrate the fuel injection amount of the reference fuel in the engine;

[0061] S202: Under any of the operating conditions, obtaining fuel injection amounts of flexible fuels with multiple different mixing ratios in the engine;

[0062] S203: obtaining fuel injection amount correction coefficients of the flexible fuels with different mixing ratios under the any operating condition according to differences between the fuel injection amount of the reference fuel in the engine under the any operating condition and the fuel injection amounts of the flexible fuels with different mixing ratios in the engine;

[0063] S204: Obtaining the correction coefficient table according to a plurality of flexible fuels with different mixing ratios under any operating condition and corresponding fuel injection amount correction coefficients.

[0064] Taking gasoline as an example of the benchmark fuel, firstly, 100% gasoline is used to conduct an engine bench test to calibrate the fuel injection amount under different intake volumes; then, a bench test is conducted on the bench using flexible fuels with different mixing ratios to obtain the fuel injection amount under different intake volumes. The mixing ratio of flexible fuels with different mixing ratios is known, therefore, through the difference between the fuel injection amount of gasoline under different intake volumes and the fuel injection amount of flexible fuels with different mixing ratios, the relationship between the fuel injection amount of each mixing ratio of flexible fuel and the fuel injection amount of gasoline (such as a ratio) can be obtained, and through this relationship, the fuel injection amount correction coefficient of each mixing ratio of flexible fuel calculated through the fuel injection amount of each mixing ratio of flexible fuel and the fuel injection amount of gasoline can be determined.

[0065] Furthermore, since the mixing ratio of the flexible fuel of each mixing ratio is known, the relationship between the mixing ratio of the flexible fuel of each mixing ratio and the fuel injection quantity correction coefficient of the flexible fuel can be established, and then the flexible fuel injection quantity correction coefficient at different ratios can be calibrated, and a correction coefficient table at different ratios can be obtained.

[0066] Assuming that the fuel injection amount of the flexible fuel corresponding to the mixing ratio A is 6 under the current operating condition, and the fuel injection amount of the gasoline in the engine under the operating condition is 5, the fuel injection amount correction coefficient of the flexible fuel is 6 / 5=1.2, and the mixing ratio corresponding to the correction coefficient is stored in the correction coefficient table, such as: the fuel injection amount correction coefficient 1.2 corresponding to the mixing ratio A of the flexible fuel is stored. Thus, the mixing ratio of the flexible fuel in the fuel tank can be accurately obtained.

[0067] According to the fuel ratio calculation method of the flexible fuel vehicle of the embodiment of the present application, during the operation of the vehicle, the fuel injection amount of the flexible fuel in the engine under the current operating condition is obtained, the difference between the fuel injection amount and the reference fuel injection amount is obtained, and the mixing ratio of the flexible fuel is obtained according to the difference between the fuel injection amount and the reference fuel injection amount, wherein different differences correspond to the mixing ratios of multiple different flexible fuels under different operating conditions, so that the vehicle's driving range can be quickly and accurately determined according to the mixing ratio of the fuel in the fuel tank. Therefore, for a vehicle that is not equipped with a sensor for detecting the mixing ratio of the flexible fuel, the mixing ratio of the flexible fuel can also be accurately obtained, which not only saves the cost of the vehicle, but also quickly and accurately obtains the driving range of the vehicle. Compared with the prior art that cannot determine the proportion of each fuel in the fuel tank, and thus cannot determine the driving range and cannot update the driving range display in time, the driving range can be updated and displayed in time, so that the user can quickly and intuitively feel the driving range of the vehicle, thereby effectively improving the vehicle's use experience.

[0068] In one embodiment of the present application, after querying the correction coefficient table according to the fuel injection amount correction coefficient to obtain the mixing ratio of the flexible fuel, it also includes: obtaining the total amount of fuel in the fuel tank; and obtaining the vehicle's cruising range according to the energy consumption value of each fuel in the fuel tank and the mixing ratio.

[0069] In this example, obtaining the total amount of fuel in the fuel tank includes: obtaining a fuel level value in the fuel tank; obtaining a fuel volume according to the fuel level value, wherein the fuel volume represents the total amount of fuel. In addition, before obtaining the fuel volume according to the fuel level value, it also includes: filtering the fuel level value.

[0070] Specifically, the fuel tank has a liquid level sensor for detecting the liquid level. The liquid level sensor detects the liquid level of the fuel in the fuel tank. Since the total capacity of the fuel tank is known, for example, the total capacity of the fuel tank is 60 liters, and the current liquid level value occupies 3 / 4 of the height within the total capacity, the fuel volume of the fuel in the fuel tank after refueling can be converted based on the total capacity of 60 liters and the current liquid level value occupying 3 / 4 of the height within the total capacity, such as 3 / 4 of 60 liters is 45 liters.

[0071] The accuracy of the fuel volume in the fuel tank will affect the accuracy of the cruising range calculation, so the fuel level value is filtered. That is, the purpose of filtering is to reduce or even eliminate the error in the detection of the fuel level value, so that the calculation result of the fuel volume is more accurate. For example, the vehicle is on a sloped ground. In this way, after the fuel level is detected by the level sensor in the fuel tank, it is filtered to avoid the influence of the slope causing the final fuel volume calculation to be too large. That is, the error in the fuel level detection caused by the slope is eliminated, thereby ensuring that the calculation result of the fuel volume is more accurate and reliable. As a result, the accuracy and reliability of the cruising range calculation are further improved.

[0072] Figure 3 FIG. 1 is a structural block diagram of a fuel ratio calculation system for a flexible fuel vehicle according to an embodiment of the present application. Figure 3 As shown, a fuel ratio calculation system for a flexible fuel vehicle according to an embodiment of the present application includes: an acquisition module 310, a difference determination module 320 and a calculation module 330, wherein:

[0073] An acquisition module 310 is used to obtain a fuel injection amount of a flexible fuel in the engine under a current operating condition;

[0074] a difference determination module 320 for obtaining a difference between the fuel injection amount and a reference fuel injection amount;

[0075] The calculation module 330 is used to obtain the mixing ratio of the flexible fuel according to the difference between the fuel injection amount and the reference fuel injection amount, wherein different differences correspond to the mixing ratios of multiple different flexible fuels under different operating conditions.

[0076] According to the fuel ratio calculation system of the flexible fuel vehicle of the embodiment of the present application, during the operation of the vehicle, the fuel injection amount of the flexible fuel in the engine under the current operating condition is obtained, the difference between the fuel injection amount and the reference fuel injection amount is obtained, and the mixing ratio of the flexible fuel is obtained according to the difference between the fuel injection amount and the reference fuel injection amount, wherein different differences correspond to the mixing ratios of multiple different flexible fuels under different operating conditions, so that the vehicle's driving range can be quickly and accurately determined according to the mixing ratio of the fuel in the fuel tank. Therefore, for a vehicle that is not equipped with a sensor for detecting the mixing ratio of the flexible fuel, the mixing ratio of the flexible fuel can also be accurately obtained, which not only saves the cost of the vehicle, but also quickly and accurately obtains the vehicle's driving range. Compared with the prior art that cannot determine the proportion of each fuel in the fuel tank, and thus cannot determine the driving range and cannot update the driving range display in time, the driving range can be updated and displayed in time, so that the user can quickly and intuitively feel the vehicle's driving range, thereby effectively improving the vehicle's use experience.

[0077] The specific definition of the fuel ratio calculation system for flexible fuel vehicles can be found in the definition of the fuel ratio calculation method for flexible fuel vehicles mentioned above, which will not be repeated here. The various modules of the above-mentioned fuel ratio calculation system for flexible fuel vehicles can be implemented in whole or in part by software, hardware and a combination thereof. The above-mentioned various modules can be embedded in or independent of the processor in the computer device in the form of hardware, or can be stored in the memory of the computer device in the form of software, so that the processor can call and execute the operations corresponding to the above-mentioned various modules.

[0078] In one embodiment, a vehicle is provided, comprising: a fuel ratio calculation system for a flexible fuel vehicle according to any one of the above embodiments. During the operation of the vehicle, the fuel injection amount of the flexible fuel in the engine under the current operating condition is obtained, the difference between the fuel injection amount and the reference fuel injection amount is obtained, and the mixing ratio of the flexible fuel is obtained according to the difference between the fuel injection amount and the reference fuel injection amount, wherein different differences correspond to a plurality of different mixing ratios of flexible fuels under different operating conditions, so that the vehicle's driving range can be quickly and accurately determined according to the mixing ratio of the fuel in the fuel tank. Therefore, for a vehicle that is not equipped with a sensor for detecting the mixing ratio of the flexible fuel, the mixing ratio of the flexible fuel can also be accurately obtained, which not only saves the cost of the vehicle, but also quickly and accurately obtains the driving range of the vehicle. Compared with the prior art that cannot determine the proportion of each fuel in the fuel tank, and thus cannot determine the driving range and cannot update the driving range display in time, the driving range can be updated and displayed in time, so that the user can quickly and intuitively feel the driving range of the vehicle, thereby effectively improving the vehicle's use experience.

[0079] In addition, other structures and functions of the vehicle according to the embodiment of the present application are known to ordinary technicians in the field and will not be elaborated here.

[0080] Reference below Figure 4 , Figure 4 A schematic diagram of the structure of a computer device suitable for implementing the embodiments of the present application is shown.

[0081] like Figure 4 As shown, the computer system includes a central processing unit (CPU) 1001, which can perform various appropriate actions and processes according to the program stored in the read-only memory (ROM) 1002 or the program loaded from the storage part 1008 into the random access memory (RAM) 1003. In the RAM 1003, various programs and data required for the operation instructions of the system are also stored. The CPU 1001, the ROM 1002, and the RAM 1003 are connected to each other through a bus 1004. An input / output (I / O) interface 1005 is also connected to the bus 1004.

[0082] The following components are connected to the I / O interface 1005: an input section 1006 including a keyboard, a mouse, etc.; an output section 1007 including a cathode ray tube (CRT), a liquid crystal display (LCD), etc., and a speaker, etc.; a storage section 1008 including a hard disk, etc.; and a communication section 1009 including a network interface card such as a LAN card, a modem, etc. The communication section 1009 performs communication processing via a network such as the Internet. A drive 1010 is also connected to the I / O interface 1005 as needed. A removable medium 1011, such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc., is installed on the drive 1010 as needed, so that a computer program read therefrom is installed into the storage section 1008 as needed.

[0083] In particular, according to an embodiment of the present application, the above reference flow chart Figure 1 The described process can be implemented as a computer software program. For example, a computer program product is included in an embodiment of the present application, which includes a computer program carried on a computer readable medium, and the computer program includes a program code for executing the method shown in the flow chart. In such an embodiment, the computer program includes a program code for executing the method shown in the flow chart. In such an embodiment, the computer program can be downloaded and installed from the network through the communication part 1009, and / or installed from the removable medium 1011. When the computer program is executed by the central processing unit (CPU) 1001, the above-mentioned functions defined in the system of the present application are executed.

[0084] It should be noted that the computer-readable medium shown in the present application may be a computer-readable signal medium or a computer-readable storage medium or any combination of the above two. The computer-readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination of the above. More specific examples of computer-readable storage media may include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the present application, a computer-readable storage medium may be any tangible medium containing or storing a program that can be used by or in combination with an instruction execution system, device or device. In the present application, a computer-readable signal medium may include a data signal propagated in a baseband or as part of a carrier wave, which carries a computer-readable program code. This propagated data signal may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. Computer-readable signal media may also be any computer-readable medium such as a computer-readable storage medium that can send, propagate or transmit a program for use by or in conjunction with an instruction execution system, device or device. The program code contained on the computer-readable medium may be transmitted using any appropriate medium, including but not limited to: wireless, wire, optical cable, RF, etc., or any suitable combination of the above.

[0085] The flow chart and block diagram in the accompanying drawings illustrate the possible architecture, functions and operating instructions of the system, method and computer program product according to various embodiments of the present application. In this regard, each box in the flow chart or block diagram can represent a module, a program segment or a part of a code, and the aforementioned module, a program segment or a part of a code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some implementations as replacements, the functions marked in the box can also occur in a sequence different from that marked in the accompanying drawings. For example, the boxes represented by two connections can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or flow chart, and the combination of the boxes in the block diagram and / or flow chart can be implemented with a dedicated hardware-based system that performs a specified function or operating instruction, or can be implemented with a combination of dedicated hardware and computer instructions.

[0086] The units or modules involved in the embodiments described in the present application may be implemented by software or hardware. The units or modules described may also be arranged in a processor. The names of these units or modules do not, in some cases, constitute limitations on the units or modules themselves.

[0087] The technical features of the above embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0088] The above embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A method for calculating the fuel ratio of a flexible fuel vehicle, characterized in that: include: Obtaining a fuel injection amount of a flexible fuel in an engine under current operating conditions; obtaining a difference between the fuel injection amount and a reference fuel injection amount; The mixing ratio of the flexible fuel is obtained according to the difference between the fuel injection amount and the reference fuel injection amount, wherein different differences correspond to mixing ratios of a plurality of different flexible fuels under different operating conditions.

2. The method for calculating the fuel ratio of a flexible fuel vehicle according to claim 1, characterized in that: The obtaining of the difference between the fuel injection amount and the reference fuel injection amount, and obtaining the mixing ratio of the flexible fuel according to the difference between the fuel injection amount and the reference fuel injection amount, wherein different differences correspond to a plurality of different mixing ratios of the flexible fuels under different operating conditions, include: obtaining a fuel injection amount correction coefficient according to a difference between the fuel injection amount and a reference fuel injection amount, wherein the reference fuel injection amount is a fuel injection amount of a reference fuel in the engine under the current operating condition; According to the fuel injection amount correction coefficient, a correction coefficient table is queried to obtain the mixing ratio of the flexible fuel, wherein the correction coefficient table pre-stores the corresponding relationship between the mixing ratios of multiple different flexible fuels and the fuel injection amount correction coefficient under different operating conditions.

3. The method for calculating the fuel ratio of a flexible fuel vehicle according to claim 2, characterized in that: Before searching a correction coefficient table according to the fuel injection amount correction coefficient to obtain the mixing ratio of the flexible fuel, the method further includes: Under any operating condition, calibrate the fuel injection quantity of the reference fuel in the engine; Under any of the operating conditions, obtaining fuel injection amounts of flexible fuels with multiple different mixing ratios in the engine; Obtaining fuel injection amount correction coefficients of the flexible fuels with a plurality of different mixing ratios under the any operating condition according to differences between the fuel injection amount of the reference fuel in the engine under the any operating condition and the fuel injection amounts of the flexible fuels with a plurality of different mixing ratios in the engine; The correction coefficient table is obtained according to a plurality of flexible fuels with different mixing ratios under any operating condition and corresponding fuel injection quantity correction coefficients.

4. The method for calculating the fuel ratio of a flexible fuel vehicle according to claim 3, characterized in that: The step of obtaining a fuel injection amount correction coefficient according to a difference between the fuel injection amount and a reference fuel injection amount includes: According to the fuel injection amount of the reference fuel in the engine calibrated under any operating condition, obtaining the fuel injection amount of the reference fuel in the engine under the current operating condition; According to the difference between the fuel injection amount of the flexible fuel in the engine under the current operating condition and the fuel injection amount of the reference fuel in the engine under the current operating condition, a fuel injection amount correction coefficient of the flexible fuel in the engine under the current operating condition is obtained.

5. The method for calculating the fuel ratio of a flexible fuel vehicle according to any one of claims 1 to 4, characterized in that: in, Under different operating conditions, the engine's intake volume is different, and the air-fuel ratio is the target air-fuel ratio.

6. The method for calculating the fuel ratio of a flexible fuel vehicle according to claim 2, characterized in that: After the correction coefficient table is searched according to the fuel injection amount correction coefficient to obtain the mixing ratio of the flexible fuel, the method further includes: Get the total amount of fuel in the fuel tank; The driving range of the vehicle is obtained according to the energy consumption value of each fuel in the fuel tank and the mixing ratio.

7. The method for calculating the fuel ratio of a flexible fuel vehicle according to claim 6, characterized in that: The obtaining the total amount of fuel in the fuel tank comprises: Obtaining a fuel level value in the fuel tank; A fuel volume is obtained as a function of the fuel fill level value, wherein the fuel volume characterizes the total amount of fuel.

8. A fuel ratio calculation system for a flexible fuel vehicle, characterized in that: include: An acquisition module, used for obtaining a fuel injection amount of a flexible fuel in an engine under a current operating condition; a difference determination module for obtaining a difference between the fuel injection amount and a reference fuel injection amount; The calculation module is used to obtain the mixing ratio of the flexible fuel according to the difference between the fuel injection amount and the reference fuel injection amount, wherein different differences correspond to the mixing ratios of multiple different flexible fuels under different operating conditions.

9. A vehicle, characterized in that: include: The fuel ratio calculation system for a flexible fuel vehicle according to claim 8.

10. A computer device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the program, the fuel ratio calculation method for a flexible fuel vehicle according to any one of claims 1 to 7 is implemented.

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