A method, device, medium and equipment for calculating fuel saving of hybrid heavy truck

Abstract

The present application discloses a method, device, medium and equipment for calculating the fuel saving of a hybrid heavy-duty truck, which obtains the engine torque and motor torque of the hybrid heavy-duty truck; converts the motor torque into the equivalent torque of the engine; calculates the predicted fuel consumption of using the engine alone according to the engine torque and the equivalent torque; and calculates the fuel saving according to the predicted fuel consumption and the actual fuel consumption of the hybrid heavy-duty truck; that is, the motor torque is converted into the equivalent torque of the engine, and the predicted fuel consumption when the engine is driven alone is calculated, and the fuel saving is calculated according to the predicted fuel consumption and the actual fuel consumption, so as to calculate the fuel saving of the hybrid heavy-duty truck in real time during its actual operation. Not only can the real-time fuel saving of the hybrid heavy-duty truck be further refined, but also its actual fuel saving can be obtained according to the actual operation route of the hybrid heavy-duty truck, so as to improve the accuracy of the fuel saving of each hybrid heavy-duty truck.

Description

Technical Field

[0001] The present application relates to the technical field of intelligent heavy-duty trucks, and in particular to a method, device, medium and equipment for calculating the fuel saving of a hybrid heavy-duty truck. Background Art

[0002] A heavy-duty truck is a heavy-duty commercial vehicle consisting of a tractor and a trailer. The tractor is equipped with an engine and other power drive devices to drive the tractor and trailer. Currently, most heavy-duty trucks are fuel-powered tractors and trailers, and some are electric-powered tractors and trailers. Fuel-powered tractors and trailers have the problem of high fuel consumption, while electric-powered tractors and trailers have the problem of short cruising range and poor charging convenience. Hybrid heavy-duty trucks are mainly driven by fuel-powered tractors and auxiliary driven by electric trailers. On the basis of not reducing the cruising range and refueling convenience of hybrid heavy-duty trucks, the energy utilization efficiency is improved and the fuel consumption of the whole vehicle of hybrid heavy-duty trucks is reduced.

[0003] However, the current calculation of the fuel saving of hybrid heavy-duty trucks is mostly based on fuel consumption tests on fixed road conditions and comparison with the fuel consumption of pure fuel heavy-duty trucks to determine the fuel saving. The fuel saving of hybrid heavy-duty trucks is not counted in real time during actual operation, and is not universal. Summary of the invention

[0004] In order to solve the above technical problems, the present application is proposed. The embodiments of the present application provide a method, device, medium and equipment for calculating the fuel saving of a hybrid heavy truck.

[0005] According to one aspect of the present application, a method for calculating the fuel savings of a hybrid heavy-duty truck is provided, comprising: obtaining the engine torque and motor torque of the hybrid heavy-duty truck; converting the motor torque into an equivalent torque of the engine based on the transmission efficiency between the motor and the engine; calculating a predicted fuel consumption of the engine alone based on the engine torque and the equivalent torque; and calculating the fuel savings of the hybrid heavy-duty truck based on the predicted fuel consumption and the actual fuel consumption of the engine of the hybrid heavy-duty truck.

[0006] In one embodiment, the engine is arranged on the tractor of the hybrid heavy-duty truck, and the motor is arranged on the trailer of the hybrid heavy-duty truck; wherein, converting the motor torque into the equivalent torque of the engine according to the transmission efficiency between the motor and the engine includes: converting the motor torque into the equivalent torque according to the electric drive axle gearbox transmission ratio of the trailer, the electric drive axle main reducer transmission ratio of the trailer, the transmission efficiency from the output end of the motor to the wheel end, the gearbox transmission ratio of the tractor, the main reducer transmission ratio of the tractor and the transmission efficiency from the output end of the engine to the wheel end.

[0007] In one embodiment, the calculation of the predicted fuel consumption of using the engine alone based on the engine torque and the equivalent torque includes: calculating the sum of the engine torque and the equivalent torque to obtain the comprehensive torque of the hybrid heavy truck; wherein the directions of the engine torque and the equivalent torque are the same or opposite; and calculating the predicted fuel consumption of the engine outputting the comprehensive torque.

[0008] In one embodiment, the calculation of the predicted fuel consumption of the engine outputting the comprehensive torque includes: querying the universal characteristic table of the engine based on the comprehensive torque and the current speed of the engine to obtain the specific fuel consumption of the engine; and calculating the predicted fuel consumption based on the specific fuel consumption of the engine, the comprehensive torque and the current speed of the engine.

[0009] In one embodiment, querying the universal characteristic table of the engine based on the comprehensive torque and the current speed of the engine to obtain the specific fuel consumption of the engine includes: if the comprehensive torque exceeds the universal characteristic table of the engine, fitting a plurality of torque values ​​at the current speed of the engine to obtain the specific fuel consumption of the engine.

[0010] In one embodiment, calculating the fuel saving of the hybrid heavy truck based on the predicted fuel consumption and the actual fuel consumption of the engine of the hybrid heavy truck includes: calculating the difference between the predicted fuel consumption and the actual fuel consumption of the engine of the hybrid heavy truck to obtain the instantaneous fuel saving of the hybrid heavy truck; and calculating the cumulative fuel saving of the hybrid heavy truck within a preset time period based on the instantaneous fuel saving of the hybrid heavy truck within a preset time period.

[0011] In one embodiment, obtaining the engine torque and the motor torque of the hybrid heavy truck includes: calculating the required torque of the hybrid heavy truck based on the accelerator pedal signal of the hybrid heavy truck; and calculating the engine torque and the motor torque according to the required torque of the hybrid heavy truck.

[0012] According to another aspect of the present application, a fuel saving calculation device for a hybrid heavy-duty truck is provided, comprising: a wheel-end torque acquisition module, used to acquire the engine torque and motor torque of the hybrid heavy-duty truck; an equivalent torque calculation module, used to convert the motor torque into the equivalent torque of the engine according to the transmission efficiency between the motor and the engine; a predicted fuel calculation module, used to calculate the predicted fuel consumption of using the engine alone according to the engine torque and the equivalent torque; and a fuel saving calculation module, used to calculate the fuel saving of the hybrid heavy-duty truck according to the predicted fuel consumption and the actual fuel consumption of the engine of the hybrid heavy-duty truck.

[0013] According to another aspect of the present application, a computer-readable storage medium is provided, wherein the storage medium stores a computer program, and the computer program is used to execute any of the above methods.

[0014] According to another aspect of the present application, an electronic device is provided, comprising: a processor; a memory for storing instructions executable by the processor; and the processor is configured to execute any one of the methods described above.

[0015] The present application provides a method, device, medium and equipment for calculating the fuel saving of a hybrid heavy-duty truck, which obtains the engine torque and motor torque of the hybrid heavy-duty truck; wherein the engine torque is the wheel-end torque output by the engine of the hybrid heavy-duty truck, and the motor torque is the wheel-end torque output by the motor of the hybrid heavy-duty truck; according to the transmission efficiency between the motor and the engine, the motor torque is converted into the equivalent torque of the engine; wherein the equivalent torque represents the torque that the engine needs to output to achieve the motor torque; according to the engine torque and the equivalent torque, the predicted fuel consumption of using the engine alone is calculated; wherein the predicted fuel consumption represents the fuel consumption of using the equivalent output engine torque and motor torque of the engine of the hybrid heavy-duty truck alone The fuel consumption of the hybrid heavy-duty truck is calculated based on the predicted fuel consumption and the actual fuel consumption of the engine of the hybrid heavy-duty truck. The fuel saving of the hybrid heavy-duty truck is calculated based on the predicted fuel consumption and the actual fuel consumption of the engine of the hybrid heavy-duty truck. The fuel saving of the hybrid heavy-duty truck is calculated based on the predicted fuel consumption and the actual fuel consumption of the engine of the hybrid heavy-duty truck. The fuel saving of the hybrid heavy-duty truck is calculated in real time during the actual operation of the hybrid heavy-duty truck. Not only can the real-time fuel saving of the hybrid heavy-duty truck be further refined, but also the real fuel saving of the hybrid heavy-duty truck can be obtained according to its actual operation route, so as to improve the accuracy of the fuel saving of each hybrid heavy-duty truck. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] By describing the embodiments of the present application in more detail in conjunction with the accompanying drawings, the above and other purposes, features and advantages of the present application will become more apparent. The accompanying drawings are used to provide a further understanding of the embodiments of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the present application and do not constitute a limitation of the present application. In the accompanying drawings, the same reference numerals generally represent the same components or steps.

[0017] Figure 1 It is a structural schematic diagram of the control system of the hybrid heavy truck to which the present application is applicable.

[0018] Figure 2 It is a flowchart of a method for calculating the fuel saving of a hybrid heavy truck provided by an exemplary embodiment of the present application.

[0019] Figure 3 It is a structural schematic diagram of a fuel saving calculation device for a hybrid heavy truck provided by an exemplary embodiment of the present application.

[0020] Figure 4 It is a structural diagram of an electronic device provided by an exemplary embodiment of the present application. DETAILED DESCRIPTION

[0021] Below, the exemplary embodiments according to the present application will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application, and it should be understood that the present application is not limited to the exemplary embodiments described here.

[0022] Figure 1 Schematic diagram of the control system of a hybrid heavy truck to which this application is applicable. Figure 1 As shown, the hybrid heavy truck includes a battery, an electric drive axle motor (i.e., motor), an electric drive axle gearbox, an oil pump, a fan, a trailer brake valve, a trailer brake, a tractor brake valve, a tractor brake, and a battery management system (BMS), a motor controller (MCU), an automatic transmission controller (TCU), a thermal management system (TMS), a vehicle controller (VCU), a trailer electronic control braking system (TEBS) and an electronic control braking system (EBS); wherein, the battery and the electric drive axle motor are arranged on the trailer to provide auxiliary driving force or realize braking recovery, the MCU is used to control the operation of the motor, the electric drive axle gearbox connects the electric drive axle motor and the electric drive axle to adjust the torque and speed output by the electric drive axle motor to the electric drive axle, the TCU is used to control the operation of the electric drive axle gearbox, the oil pump and the fan It is used to dissipate heat for the battery and the electric drive axle motor. TMS is used to control the operation of the oil pump and the fan. The trailer brake and the tractor brake are used to realize the mechanical braking of the trailer and the tractor respectively. The trailer brake valve and the tractor brake valve are used to control the operation of the trailer brake and the tractor brake respectively. TEBS and EBS are used to control the opening and closing of the trailer brake valve and the tractor brake valve respectively. The VCU interacts with the BMS, MCU, TCU, and TMS through electrical signals / CAN signals to complete the control of the entire power domain of the trailer. The VCU interacts with the EBS and TEBS through electrical signals / CAN signals, and responds quickly to the driver's braking behavior according to signals such as vehicle speed, pedal travel, axle load, motor torque limit, and vehicle instability to complete the distribution of mechanical braking torque and electric braking torque.

[0023] Figure 2 : is a flow chart of a method for calculating the fuel saving of a hybrid heavy truck provided by an exemplary embodiment of the present application. The method for calculating the fuel saving of a hybrid heavy truck is applied to the control system of the hybrid heavy truck, such as Figure 2As shown, the method for calculating the fuel saving of the hybrid heavy truck includes the following steps:

[0024] Step 210: Obtain the engine torque and motor torque of the hybrid heavy truck.

[0025] Among them, the engine torque is the wheel-end torque output by the engine of the hybrid heavy truck, and the motor torque is the wheel-end torque output by the motor of the hybrid heavy truck. During the driving process of the hybrid heavy truck, the engine and / or the motor will output torque to the wheel end to drive the vehicle. Specifically, the main driving modes of the hybrid heavy truck include:

[0026] Engine-only driving mode; at this time, the motor does not output torque, that is, the engine torque is greater than zero and the motor torque is zero.

[0027] Motor-only drive mode: At this time, the engine does not output torque, that is, the engine torque is zero and the motor torque is greater than zero.

[0028] Hybrid mode: At this time, the engine and motor output positive torque at the same time, that is, the engine torque is greater than zero and the motor torque is greater than zero.

[0029] Driving power generation mode: At this time, the engine outputs positive torque and the motor outputs reverse torque to generate electricity, that is, the engine torque is greater than zero and the motor torque is less than zero.

[0030] Step 220: Convert the motor torque into the equivalent torque of the engine according to the transmission efficiency between the motor and the engine.

[0031] Among them, equivalent torque refers to the torque that the engine needs to output to achieve the motor torque. After obtaining the motor torque of the hybrid heavy truck, this application converts the motor torque into the equivalent torque of the engine according to the transmission efficiency between the motor and the engine to determine the torque that the engine needs to output to achieve the motor torque, that is, the torque that needs to be output to achieve the same driving effect by replacing the motor with the engine.

[0032] Step 230: Calculate the predicted fuel consumption of the engine alone according to the engine torque and the equivalent torque.

[0033] Among them, the predicted fuel consumption represents the amount of fuel consumed by the equivalent output engine torque and motor torque of the engine of a hybrid heavy truck alone. After the equivalent torque of the engine is converted, the engine torque and the equivalent torque are combined to calculate the amount of fuel that the engine needs to consume if the engine is used alone to achieve the current driving effect (i.e. the predicted fuel consumption), that is, based on the current wheel-end torque of the hybrid heavy truck (including the overall wheel-end torque of the tractor and trailer), the amount of fuel that the engine needs to consume to output the current wheel-end torque alone (i.e. the fuel consumption in non-hybrid mode) is calculated, thereby obtaining the fuel consumption of a pure fuel vehicle running in the current state.

[0034] Step 240: Calculate the fuel saving of the hybrid heavy truck based on the predicted fuel consumption and the actual fuel consumption of the engine of the hybrid heavy truck.

[0035] After calculating the predicted fuel consumption of a pure fuel vehicle in the current state, the instantaneous fuel saving of the hybrid heavy truck in the current state is obtained by comparing the predicted fuel consumption with the actual fuel consumption of the hybrid heavy truck in the current state.

[0036] The present application provides a method for calculating the fuel saving of a hybrid heavy-duty truck, by obtaining the engine torque and motor torque of the hybrid heavy-duty truck; wherein the engine torque is the wheel-end torque output by the engine of the hybrid heavy-duty truck, and the motor torque is the wheel-end torque output by the motor of the hybrid heavy-duty truck; according to the transmission efficiency between the motor and the engine, the motor torque is converted into the equivalent torque of the engine; wherein the equivalent torque represents the torque that the engine needs to output to achieve the motor torque; according to the engine torque and the equivalent torque, the predicted fuel consumption of using the engine alone is calculated; wherein the predicted fuel consumption represents the amount of fuel consumed by using the equivalent output engine torque and motor torque of the engine of the hybrid heavy-duty truck alone ; Calculate the fuel saving of the hybrid heavy-duty truck based on the predicted fuel consumption and the actual fuel consumption of the engine of the hybrid heavy-duty truck; that is, convert the motor torque into the equivalent torque of the engine, and calculate the predicted fuel consumption when the engine is driven alone based on the engine torque and the equivalent torque, calculate the fuel saving of the hybrid heavy-duty truck based on the predicted fuel consumption and the actual fuel consumption of the engine of the hybrid heavy-duty truck, so as to calculate the fuel saving of the hybrid heavy-duty truck in real time during its actual operation, which can not only be more refined to the real-time fuel saving of the hybrid heavy-duty truck, but also the real fuel saving can be obtained according to the actual operation route of the hybrid heavy-duty truck, so as to improve the accuracy of the fuel saving of each hybrid heavy-duty truck.

[0037] In one embodiment, the engine is arranged on the tractor of the hybrid heavy-duty truck, and the motor is arranged on the trailer of the hybrid heavy-duty truck; wherein, the specific implementation method of the above-mentioned step 220 can be: according to the transmission ratio of the electric drive axle gearbox of the trailer, the transmission ratio of the electric drive axle main reducer of the trailer, the transmission efficiency from the output end of the motor to the wheel end, the transmission ratio of the gearbox of the tractor, the transmission ratio of the main reducer of the tractor and the transmission efficiency from the output end of the engine to the wheel end, the motor torque is converted into an equivalent torque.

[0038] After obtaining the motor torque, this application converts the motor torque into the equivalent torque of the engine. The specific conversion formula is:

[0039]

[0040] in, Indicates the motor torque, which is fed back to the CAN bus by the MCU torque; The transmission ratio of the electric drive axle gearbox is fed back by the TCU to the CAN bus; is the transmission ratio of the electric drive axle main reducer, which is a fixed value; is the transmission efficiency from the output end of the motor to the wheel end, which is a fixed value; The transmission ratio of the tractor's gearbox is fed back by the tractor's gearbox to the CAN bus; is the transmission ratio of the main reducer of the tractor, which is a fixed value; is the transmission efficiency from the output end of the engine to the wheel end, which is a fixed value.

[0041] In one embodiment, the specific implementation method of the above step 230 can be: calculate the sum of the engine torque and the equivalent torque to obtain the comprehensive torque of the hybrid heavy truck; wherein the directions of the engine torque and the equivalent torque are the same or opposite; calculate the predicted fuel consumption of the engine output comprehensive torque.

[0042] After converting the equivalent torque of the engine, the application combines the engine torque to calculate the comprehensive torque of the hybrid heavy truck. The specific calculation formula of the comprehensive torque is:

[0043]

[0044] in, is the comprehensive torque, is the engine torque, and the directions of the engine torque and the equivalent torque may be the same (hybrid mode) or opposite (driving power generation mode).

[0045] In one embodiment, the specific implementation method of the above step 230 can be: query the universal characteristic table of the engine based on the comprehensive torque and the current speed of the engine to obtain the specific fuel consumption of the engine; calculate the predicted fuel consumption based on the specific fuel consumption of the engine, the comprehensive torque and the current speed of the engine.

[0046] After calculating the comprehensive torque, the application searches the specific fuel consumption of the engine outputting the comprehensive torque in the current running state of the vehicle according to the engine universal characteristic table, and calculates the output power of the engine in combination with the comprehensive torque and the current speed of the engine, and calculates the predicted fuel consumption according to the output power of the engine and the specific fuel consumption of the comprehensive torque. Among them, the predicted fuel consumption = engine output power * specific fuel consumption of the comprehensive torque.

[0047] In one embodiment, the specific implementation of step 230 may be: if the comprehensive torque exceeds the universal characteristic table of the engine, the specific fuel consumption of the engine is obtained by fitting multiple torque values ​​at the current speed of the engine.

[0048] Since the comprehensive torque is the sum of the engine torque and the motor torque, the comprehensive torque may exceed the engine's universal characteristic table. If the comprehensive torque exceeds the engine's universal characteristic table, the specific fuel consumption of the engine is obtained by fitting multiple torque values ​​at the current engine speed. The present application can use cubic spline extrapolation to fit the specific fuel consumption of the engine. Specifically, according to the current engine speed, multiple torque data points (for example, 4 torque data points) are selected from the engine universal characteristic table. Preferably, multiple equally spaced torque data points close to the comprehensive torque can be selected at intervals of 10 Nm, and the points of extrapolation calculation are added to continuously iterate and calculate to obtain the specific fuel consumption corresponding to the comprehensive torque.

[0049] In one embodiment, the specific implementation method of the above-mentioned step 240 can be: calculate the difference between the predicted fuel consumption and the actual fuel consumption of the engine of the hybrid heavy-duty truck to obtain the instantaneous fuel saving of the hybrid heavy-duty truck; based on the instantaneous fuel saving of the hybrid heavy-duty truck in the preset time period, calculate the cumulative fuel saving of the hybrid heavy-duty truck in the preset time period.

[0050] After calculating the instantaneous fuel savings of a hybrid heavy-duty truck, the present application can obtain the cumulative fuel savings within the preset time period based on the time integral based on the instantaneous fuel savings within the preset time period, thereby calculating the cumulative fuel savings of the hybrid heavy-duty truck in any time period or under any operating conditions, thereby improving the universality of the fuel savings calculation.

[0051] In one embodiment, the specific implementation of the above step 210 may be: calculating the required torque of the hybrid heavy truck based on the accelerator pedal signal of the hybrid heavy truck; and calculating the engine torque and the motor torque according to the required torque of the hybrid heavy truck.

[0052] Specifically, when the driver steps on the accelerator pedal, the VCU calculates the driver's target vehicle speed and the required torque of the hybrid heavy truck based on the accelerator pedal's pedaling depth, and distributes the engine's wheel-end torque and the motor's wheel-end torque, i.e., the engine torque and the motor torque, based on the torque distribution strategy. The sum of the engine torque and the motor torque is the total wheel-end torque required by the hybrid heavy truck. Regardless of whether the motor torque is positive (the vehicle is in hybrid mode) or negative (the vehicle is in driving power generation mode), the total wheel-end torque required by the vehicle is fixed and is reflected based on the current driver's accelerator pedal pedaling depth.

[0053] Figure 3 FIG. 1 is a schematic diagram of a fuel saving calculation device for a hybrid heavy truck provided by an exemplary embodiment of the present application. Figure 3As shown, the fuel saving calculation device 30 of the hybrid heavy truck includes: a wheel-end torque acquisition module 31, which is used to obtain the engine torque and motor torque of the hybrid heavy truck; wherein the engine torque is the wheel-end torque output by the engine of the hybrid heavy truck, and the motor torque is the wheel-end torque output by the motor of the hybrid heavy truck; an equivalent torque calculation module 32, which is used to convert the motor torque into the equivalent torque of the engine according to the transmission efficiency between the motor and the engine; wherein the equivalent torque represents the torque that the engine needs to output to achieve the motor torque; a predicted fuel calculation module 33, which is used to calculate the predicted fuel consumption of the engine alone according to the engine torque and the equivalent torque; wherein the predicted fuel consumption represents the fuel consumed by the equivalent output engine torque and motor torque of the engine of the hybrid heavy truck alone; a fuel saving calculation module 34, which is used to calculate the fuel saving of the hybrid heavy truck according to the predicted fuel consumption and the actual fuel consumption of the engine of the hybrid heavy truck.

[0054] The present application provides a fuel saving calculation device for a hybrid heavy truck, which obtains the engine torque and motor torque of the hybrid heavy truck through a wheel-end torque acquisition module 31; wherein the engine torque is the wheel-end torque output by the engine of the hybrid heavy truck, and the motor torque is the wheel-end torque output by the motor of the hybrid heavy truck; the equivalent torque calculation module 32 converts the motor torque into the equivalent torque of the engine according to the transmission efficiency between the motor and the engine; wherein the equivalent torque represents the torque that the engine needs to output to achieve the motor torque; the predicted fuel calculation module 33 calculates the predicted fuel consumption of the engine alone according to the engine torque and the equivalent torque; wherein the predicted fuel consumption represents the equivalent output engine torque and motor torque of the engine alone of the hybrid heavy truck. The amount of fuel consumed by the engine torque; the fuel saving calculation module 34 calculates the fuel saving of the hybrid heavy-duty truck according to the predicted fuel consumption and the actual fuel consumption of the engine of the hybrid heavy-duty truck; that is, the motor torque is converted into the equivalent torque of the engine, and the predicted fuel consumption when the engine is driven alone is calculated according to the engine torque and the equivalent torque, and the fuel saving of the hybrid heavy-duty truck is calculated according to the predicted fuel consumption and the actual fuel consumption of the engine of the hybrid heavy-duty truck, so as to calculate the fuel saving of the hybrid heavy-duty truck in real time during the actual operation of the hybrid heavy-duty truck, which can not only be more refined to the real-time fuel saving of the hybrid heavy-duty truck, but also the real fuel saving can be obtained according to the actual operation route of the hybrid heavy-duty truck, so as to improve the accuracy of the fuel saving of each hybrid heavy-duty truck.

[0055] In one embodiment, the engine is arranged on the tractor of the hybrid heavy-duty truck, and the motor is arranged on the trailer of the hybrid heavy-duty truck; wherein, the above-mentioned equivalent torque calculation module 32 can be further configured as: according to the electric drive axle gearbox transmission ratio of the trailer, the electric drive axle main reducer transmission ratio of the trailer, the transmission efficiency from the output end of the motor to the wheel end, the gearbox transmission ratio of the tractor, the main reducer transmission ratio of the tractor and the transmission efficiency from the output end of the engine to the wheel end, the motor torque is converted into an equivalent torque.

[0056] In one embodiment, the predicted fuel calculation module 33 can be further configured as follows: calculating the sum of the engine torque and the equivalent torque to obtain the comprehensive torque of the hybrid heavy truck; wherein the directions of the engine torque and the equivalent torque are the same or opposite; and calculating the predicted fuel consumption of the engine output comprehensive torque.

[0057] In one embodiment, the predicted fuel calculation module 33 can be further configured as follows: querying the universal characteristic table of the engine based on the comprehensive torque and the current speed of the engine to obtain the specific fuel consumption of the engine; and calculating the predicted fuel consumption based on the specific fuel consumption of the engine, the comprehensive torque and the current speed of the engine.

[0058] In one embodiment, the predicted fuel calculation module 33 may be further configured as follows: if the comprehensive torque exceeds the universal characteristic table of the engine, the specific fuel consumption of the engine is obtained by fitting multiple torque values ​​at the current speed of the engine.

[0059] In one embodiment, the fuel saving calculation module 34 can be further configured as follows: calculating the difference between the predicted fuel consumption and the actual fuel consumption of the engine of the hybrid heavy truck to obtain the instantaneous fuel saving of the hybrid heavy truck; and calculating the cumulative fuel saving of the hybrid heavy truck within the preset time period based on the instantaneous fuel saving of the hybrid heavy truck within the preset time period.

[0060] In one embodiment, the wheel end torque acquisition module 31 may be further configured to: calculate the required torque of the hybrid heavy truck based on the accelerator pedal signal of the hybrid heavy truck; and calculate the engine torque and the motor torque according to the required torque of the hybrid heavy truck.

[0061] Below, reference Figure 4 The electronic device according to the embodiment of the present application is described. The electronic device may be any one or both of the first device and the second device, or a stand-alone device independent of them, and the stand-alone device may communicate with the first device and the second device to receive the collected input signal from them.

[0062] Figure 4 A block diagram of an electronic device according to an embodiment of the present application is illustrated.

[0063] like Figure 4 As shown, the electronic device 10 includes one or more processors 11 and a memory 12 .

[0064] The processor 11 may be a central processing unit (CPU) or other forms of processing units having data processing capabilities and / or instruction execution capabilities, and may control other components in the electronic device 10 to perform desired functions.

[0065] The memory 12 may include one or more computer program products, which may include various forms of computer-readable storage media, such as volatile memory and / or non-volatile memory. The volatile memory may include, for example, a random access memory (RAM) and / or a cache memory (cache), etc. The non-volatile memory may include, for example, a read-only memory (ROM), a hard disk, a flash memory, etc. One or more computer program instructions may be stored on the computer-readable storage medium, and the processor 11 may run the program instructions to implement the methods of the various embodiments of the present application described above and / or other desired functions. Various contents such as input signals, signal components, noise components, etc. may also be stored in the computer-readable storage medium.

[0066] In one example, the electronic device 10 may further include: an input device 13 and an output device 14 , and these components are interconnected via a bus system and / or other forms of connection mechanisms (not shown).

[0067] When the electronic device is a stand-alone device, the input device 13 may be a communication network connector, which is used to receive the collected input signals from the first device and the second device.

[0068] In addition, the input device 13 may also include, for example, a keyboard, a mouse, and the like.

[0069] The output device 14 can output various information to the outside, including the determined distance information, direction information, etc. The output device 14 can include, for example, a display, a speaker, a printer, a communication network and a remote output device connected thereto, and the like.

[0070] Of course, to simplify, Figure 4 Only some of the components related to the present application in the electronic device 10 are shown, and components such as a bus, an input / output interface, etc. are omitted. In addition, according to specific application situations, the electronic device 10 may also include any other appropriate components.

[0071] In addition to the above-mentioned methods and devices, an embodiment of the present application may also be a computer program product, which includes computer program instructions, which, when executed by a processor, enable the processor to execute the steps of the method according to various embodiments of the present application described in the above-mentioned "Exemplary Method" section of this specification.

[0072] The computer program product may be written in any combination of one or more programming languages ​​to write program codes for performing the operations of the embodiments of the present application, including object-oriented programming languages, such as Java, C++, etc., and conventional procedural programming languages, such as "C" language or similar programming languages. The program code may be executed entirely on the user computing device, partially on the user device, as an independent software package, partially on the user computing device and partially on a remote computing device, or entirely on a remote computing device or server.

[0073] In addition, an embodiment of the present application may also be a computer-readable storage medium on which computer program instructions are stored. When the computer program instructions are executed by a processor, the processor executes the steps of the method according to various embodiments of the present application described in the above "Exemplary Method" section of this specification.

[0074] The computer readable storage medium can adopt any combination of one or more readable media. The readable medium can be a readable signal medium or a readable storage medium. The readable storage medium can include, for example, but is not limited to, a system, device or device of electricity, magnetism, light, electromagnetic, infrared, or semiconductor, or any combination of the above. More specific examples (non-exhaustive list) of readable storage media include: an electrical connection with one or more wires, a portable 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.

[0075] The basic principles of the present application are described above in conjunction with specific embodiments. However, it should be noted that the advantages, strengths, effects, etc. mentioned in the present application are only examples and not limitations, and it cannot be considered that these advantages, strengths, effects, etc. are required by each embodiment of the present application. In addition, the specific details disclosed above are only for the purpose of illustration and ease of understanding, not for limitation, and the above details do not limit the present application to being implemented by adopting the above specific details.

[0076] The block diagrams of the devices, apparatuses, equipment, and systems involved in this application are only illustrative examples and are not intended to require or imply that they must be connected, arranged, and configured in the manner shown in the block diagram. As will be appreciated by those skilled in the art, these devices, apparatuses, equipment, and systems can be connected, arranged, and configured in any manner. Words such as "including", "comprising", "having", etc. are open words, referring to "including but not limited to", and can be used interchangeably with them. The words "or" and "and" used here refer to the words "and / or" and can be used interchangeably with them, unless the context clearly indicates otherwise. The words "such as" used here refer to the phrase "such as but not limited to", and can be used interchangeably with them.

[0077] It should also be noted that in the apparatus, device and method of the present application, each component or each step can be decomposed and / or recombined. Such decomposition and / or recombination should be regarded as equivalent solutions of the present application.

[0078] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects without departing from the scope of the present application. Therefore, the present application is not intended to be limited to the aspects shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

[0079] The above description has been given for the purpose of illustration and description. In addition, this description is not intended to limit the embodiments of the present application to the forms disclosed herein. Although multiple example aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, changes, additions and sub-combinations thereof.

Claims

1. A method for calculating the fuel saving of a hybrid heavy truck, characterized in that: include: Obtaining the engine torque and motor torque of the hybrid heavy truck; Converting the motor torque into an equivalent torque of the engine according to the transmission efficiency between the motor and the engine; Calculating predicted fuel consumption of the engine alone according to the engine torque and the equivalent torque; Calculating the fuel saving of the hybrid heavy truck according to the predicted fuel consumption and the actual fuel consumption of the engine of the hybrid heavy truck; The calculating, according to the engine torque and the equivalent torque, the predicted fuel consumption of the engine alone comprises: Calculating the sum of the engine torque and the equivalent torque to obtain the comprehensive torque of the hybrid heavy truck; wherein the engine torque and the equivalent torque are in the same or opposite directions; querying a universal characteristic table of the engine based on the comprehensive torque and the current speed of the engine to obtain the specific fuel consumption of the engine; The predicted fuel consumption is calculated based on the specific fuel consumption of the engine, the comprehensive torque and the current speed of the engine.

2. The method for calculating the fuel saving of a hybrid heavy truck according to claim 1, characterized in that: The engine is arranged on the tractor of the hybrid heavy truck, and the motor is arranged on the trailer of the hybrid heavy truck; wherein, according to the transmission efficiency between the motor and the engine, converting the motor torque into the equivalent torque of the engine comprises: The motor torque is converted into the equivalent torque according to the transmission ratio of the electric drive axle gearbox of the trailer, the transmission ratio of the electric drive axle final reducer of the trailer, the transmission efficiency from the output end of the motor to the wheel end, the transmission ratio of the gearbox of the tractor, the transmission ratio of the final reducer of the tractor and the transmission efficiency from the output end of the engine to the wheel end.

3. The method for calculating the fuel saving of a hybrid heavy truck according to claim 1, characterized in that: The querying of the universal characteristic table of the engine based on the comprehensive torque and the current speed of the engine to obtain the specific fuel consumption of the engine includes: If the comprehensive torque exceeds the universal characteristic table of the engine, the specific fuel consumption of the engine is obtained by fitting a plurality of torque values ​​at the current speed of the engine.

4. The method for calculating the fuel saving of a hybrid heavy truck according to claim 1, characterized in that: Calculating the fuel saving of the hybrid heavy truck according to the predicted fuel consumption and the actual fuel consumption of the engine of the hybrid heavy truck comprises: Calculating the difference between the predicted fuel consumption and the actual fuel consumption of the engine of the hybrid heavy truck to obtain the instantaneous fuel saving of the hybrid heavy truck; The cumulative fuel saving amount of the hybrid heavy truck in the preset time period is calculated based on the instantaneous fuel saving amount of the hybrid heavy truck in the preset time period.

5. The method for calculating the fuel saving of a hybrid heavy truck according to claim 1, characterized in that: The obtaining of the engine torque and the motor torque of the hybrid heavy truck comprises: Calculating a required torque of the hybrid heavy truck based on an accelerator pedal signal of the hybrid heavy truck; The engine torque and the motor torque are calculated according to the required torque of the hybrid heavy truck.

6. A fuel saving calculation device for a hybrid heavy truck, characterized in that: include: A wheel end torque acquisition module, used to acquire the engine torque and motor torque of the hybrid heavy truck; an equivalent torque calculation module, used for converting the motor torque into an equivalent torque of the engine according to the transmission efficiency between the motor and the engine; A predicted fuel calculation module, used to calculate the predicted fuel consumption of the engine alone according to the engine torque and the equivalent torque; A fuel saving calculation module, used to calculate the fuel saving of the hybrid heavy truck according to the predicted fuel consumption and the actual fuel consumption of the engine of the hybrid heavy truck; Wherein, the predicted fuel calculation module is further configured as follows: Calculating the sum of the engine torque and the equivalent torque to obtain the comprehensive torque of the hybrid heavy truck; wherein the engine torque and the equivalent torque are in the same or opposite directions; querying a universal characteristic table of the engine based on the comprehensive torque and the current speed of the engine to obtain the specific fuel consumption of the engine; The predicted fuel consumption is calculated based on the specific fuel consumption of the engine, the comprehensive torque and the current speed of the engine.

7. A computer-readable storage medium, characterized in that: The storage medium stores a computer program, and the computer program is used to execute the method according to any one of claims 1 to 5.

8. An electronic device, characterized in that: include: processor; a memory for storing instructions executable by the processor; The processor is used to execute the method described in any one of claims 1 to 5.

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