Methods, apparatus, equipment, storage media, and programs for determining fuel consumption information

Abstract

This disclosure provides a method, apparatus, device, storage medium, and program product for determining fuel consumption information, belonging to the field of automotive technology. In this method, fuel consumption information for a target vehicle under each operating condition type under the target test standard can be obtained simply by using the test time information, vehicle information, engine information, and fuel consumption simulation model corresponding to each operating condition type under the target test standard. This eliminates the need for the driver to conduct actual vehicle testing according to the test standard, thereby improving the efficiency and reducing the cost of determining fuel consumption information.

Description

Technical Field

[0001] This disclosure relates to the field of automotive technology, and in particular to a method, apparatus, device, storage medium, and program product for determining fuel consumption information. Background Technology

[0002] With the development of automotive technology, fuel consumption results play an important role in the study of vehicle energy consumption and emissions. Existing technologies employ various testing standards, where drivers operate the vehicle according to the specified driving conditions and characteristics of each standard, recording fuel consumption information during the process. This yields the vehicle's fuel consumption data under that specific testing standard. However, current technologies for obtaining fuel consumption information through real-vehicle testing are inefficient and costly. Summary of the Invention

[0003] To address the related technical problems, this disclosure provides a method, apparatus, device, storage medium, and program product for determining fuel consumption information. The technical solution is as follows:

[0004] Firstly, a method for determining fuel consumption information is provided, the method comprising:

[0005] Acquire test time information, vehicle information, and engine information of the target vehicle for each operating condition type under the target test standard. The test time information for each operating condition type is the vehicle driving time range for fuel consumption testing under the target test standard. The vehicle information of the target vehicle includes its actual vehicle resistance, drag coefficient, frontal area, transmission ratio, transmission efficiency, wheel radius, and driving control strategy. The engine information of the target vehicle includes hot-engine drag torque, effective torque change information, catalyst heating torque reserve change information, idle torque reserve change information, idle speed control strategy, coolant temperature change characteristics, and heating factor. The catalyst heating torque reserve change information includes a first correspondence between catalyst heating torque reserve and vehicle driving time. The idle torque reserve change information includes a second correspondence between idle torque reserve and vehicle driving time. The coolant temperature change characteristics include a third correspondence between engine coolant temperature and vehicle driving time under each operating condition type of the target test standard.

[0006] Based on the test time information corresponding to each operating condition type under the target test standard, the vehicle information, the engine information, and the fuel consumption simulation model, the fuel consumption information of the target vehicle corresponding to each operating condition type under the target test standard is predicted.

[0007] In one possible implementation, predicting the fuel consumption information of the target vehicle for each operating condition type under the target test standard, based on the test time information corresponding to each operating condition type under the target test standard, the vehicle information, the engine information, and the fuel consumption simulation model, includes:

[0008] Torque reserve change information is determined based on the catalyst heating torque reserve change information and the idle torque reserve change information, wherein the torque reserve change information includes a fourth correspondence between torque reserve and vehicle driving time;

[0009] Based on the water temperature change characteristic information, the reverse torque change information is determined, wherein the reverse torque change information includes a fifth correspondence between the engine reverse torque and the vehicle driving time;

[0010] Based on the information on the change in the back-dragging torque and the back-dragging torque under the hot engine state, the information on the change in the actual back-dragging torque is determined. The information on the change in the actual back-dragging torque includes a sixth correspondence between the actual back-dragging torque and the vehicle's driving time.

[0011] Based on the torque reserve change information and the actual reverse torque change information, the flywheel front additional torque change information is determined, wherein the flywheel front additional torque change information includes the seventh correspondence between the flywheel front additional torque and the vehicle driving time;

[0012] The test time information corresponding to each working condition type under the target test standard, the vehicle information of the target vehicle, the idle speed control strategy, the effective torque change information, the flywheel front additional torque and the heating factor are input into the fuel consumption simulation model to obtain the fuel consumption information.

[0013] In one possible implementation, determining the torque reserve change information based on the catalyst heating torque reserve change information and the idle torque reserve change information includes:

[0014] For each vehicle driving time, the larger value is selected from the catalyst heating torque reserve and the idle torque reserve corresponding to the vehicle driving time, and the torque reserve change information is obtained.

[0015] In one possible implementation, determining the reversing torque change information based on the water temperature change characteristic information includes:

[0016] For each vehicle's driving time, the target engine coolant temperature corresponding to the driving time is obtained from the coolant temperature change feature information. In the pre-stored correspondence between engine coolant temperature and towing torque, the towing torque corresponding to the target engine coolant temperature is determined as the towing torque corresponding to the driving time, thus obtaining the towing torque change information.

[0017] In one possible implementation, determining the actual reverse torque change information based on the reverse torque change information and the hot engine state reverse torque includes:

[0018] For each vehicle's driving time, the target back-dragging torque corresponding to the vehicle's driving time is obtained from the back-dragging torque change information. The difference between the back-dragging torque in the hot engine state and the target back-dragging torque is calculated as the actual back-dragging torque corresponding to the vehicle's driving time, thus obtaining the actual back-dragging torque change information.

[0019] In one possible implementation, determining the flywheel-front additional torque change information based on the torque reserve change information and the actual reverse torque change information includes:

[0020] For each vehicle driving time, the target torque reserve corresponding to the vehicle driving time is obtained from the torque reserve change information, and the target actual back-dragging torque corresponding to the vehicle driving time is obtained from the actual back-dragging torque change information. The sum of the target torque reserve and the target actual back-dragging torque is calculated as the flywheel front additional torque corresponding to the vehicle driving time, thus obtaining the flywheel front additional torque change information.

[0021] Secondly, an apparatus for determining fuel consumption information is provided, the apparatus comprising:

[0022] The acquisition module is used to acquire test time information, vehicle information of the target vehicle, and engine information of the target vehicle for each operating condition type under the target test standard. The test time information for each operating condition type is the vehicle driving time range for fuel consumption testing under the target test standard. The vehicle information of the target vehicle includes the target vehicle's actual vehicle resistance, drag coefficient, frontal area, transmission ratio, transmission efficiency, wheel radius, and driving control strategy. The engine information of the target vehicle includes hot-engine drag torque, effective torque change information, catalyst heating torque reserve change information, idle torque reserve change information, idle speed control strategy, coolant temperature change characteristics, and heating factor. The catalyst heating torque reserve change information includes a first correspondence between catalyst heating torque reserve and vehicle driving time. The idle torque reserve change information includes a second correspondence between idle torque reserve and vehicle driving time. The coolant temperature change characteristics include a third correspondence between engine coolant temperature and vehicle driving time under each operating condition type of the target test standard.

[0023] The prediction module is used to predict the fuel consumption information of the target vehicle under each operating condition type under the target test standard, based on the test time information corresponding to each operating condition type under the target test standard, the vehicle information, the engine information, and the fuel consumption simulation model.

[0024] In one possible implementation, the prediction module is configured to:

[0025] Torque reserve change information is determined based on the catalyst heating torque reserve change information and the idle torque reserve change information, wherein the torque reserve change information includes a fourth correspondence between torque reserve and vehicle driving time;

[0026] Based on the water temperature change characteristic information, the reverse torque change information is determined, wherein the reverse torque change information includes a fifth correspondence between the engine reverse torque and the vehicle driving time;

[0027] Based on the information on the change in the back-dragging torque and the back-dragging torque under the hot engine state, the information on the change in the actual back-dragging torque is determined. The information on the change in the actual back-dragging torque includes a sixth correspondence between the actual back-dragging torque and the vehicle's driving time.

[0028] Based on the torque reserve change information and the actual reverse torque change information, the flywheel front additional torque change information is determined, wherein the flywheel front additional torque change information includes the seventh correspondence between the flywheel front additional torque and the vehicle driving time;

[0029] The test time information corresponding to each working condition type under the target test standard, the vehicle information of the target vehicle, the idle speed control strategy, the effective torque change information, the flywheel front additional torque and the heating factor are input into the fuel consumption simulation model to obtain the fuel consumption information.

[0030] In one possible implementation, the prediction module is configured to:

[0031] For each vehicle driving time, the larger value is selected from the catalyst heating torque reserve and the idle torque reserve corresponding to the vehicle driving time, and the torque reserve change information is obtained.

[0032] In one possible implementation, the prediction module is configured to:

[0033] For each vehicle's driving time, the target engine coolant temperature corresponding to the driving time is obtained from the coolant temperature change feature information. In the pre-stored correspondence between engine coolant temperature and towing torque, the towing torque corresponding to the target engine coolant temperature is determined as the towing torque corresponding to the driving time, thus obtaining the towing torque change information.

[0034] In one possible implementation, the prediction module is configured to:

[0035] For each vehicle's driving time, the target back-dragging torque corresponding to the vehicle's driving time is obtained from the back-dragging torque change information. The difference between the back-dragging torque in the hot engine state and the target back-dragging torque is calculated as the actual back-dragging torque corresponding to the vehicle's driving time, thus obtaining the actual back-dragging torque change information.

[0036] In one possible implementation, the prediction module is configured to:

[0037] For each vehicle driving time, the target torque reserve corresponding to the vehicle driving time is obtained from the torque reserve change information, and the target actual back-dragging torque corresponding to the vehicle driving time is obtained from the actual back-dragging torque change information. The sum of the target torque reserve and the target actual back-dragging torque is calculated as the flywheel front additional torque corresponding to the vehicle driving time, thus obtaining the flywheel front additional torque change information.

[0038] Thirdly, a computer device is provided, comprising a memory and a processor, the memory for storing computer instructions, and the processor for executing the computer instructions stored in the memory to cause the computer device to perform the methods provided in the first aspect and its possible implementations.

[0039] Fourthly, a computer-readable storage medium is provided, which stores computer program code, such that when the computer program code is executed by a computer device, the computer device performs the method provided in the first aspect and its possible implementations.

[0040] Fifthly, a computer program product is provided, comprising computer program code, wherein when the computer program code is executed by a computer device, the computer device performs the method provided by the first aspect and its possible implementations.

[0041] Using this method, fuel consumption information for the target vehicle under each operating condition under the target test standard can be obtained simply by using the test time information, vehicle information, engine information, and fuel consumption simulation model corresponding to each operating condition type under the target test standard. This eliminates the need for the driver to conduct actual vehicle testing according to the test standard, thereby improving the efficiency of determining fuel consumption information and reducing the cost of determining fuel consumption information. Attached Figure Description

[0042] Figure 1 This is a schematic diagram of the structure of a server provided in an embodiment of this disclosure;

[0043] Figure 2 This is a schematic diagram of a method for determining fuel consumption information provided in an embodiment of this disclosure;

[0044] Figure 3 This is a schematic diagram of a processing flow for determining fuel consumption information provided in an embodiment of this disclosure;

[0045] Figure 4 This is a schematic diagram of a device for determining fuel consumption information provided in an embodiment of this disclosure. Detailed Implementation

[0046] With the development of automotive technology, fuel consumption information plays an important role in studying vehicle energy consumption and emissions. Existing technologies employ various testing standards, conducting real-vehicle tests according to these standards to obtain fuel consumption results for different vehicles. However, existing real-vehicle testing methods are inefficient, costly, and time-consuming. This disclosure provides a method for determining fuel consumption information, where the execution entity can be a server. This server can be a single server or a server group. If it is a single server, it can handle all the processing described below. If it is a server group, different servers within the group can handle different processing within the described scheme. The specific processing allocation can be arbitrarily configured by technicians according to actual needs, and will not be elaborated here.

[0047] Figure 1This is a schematic diagram of a server structure provided in an embodiment of this disclosure. From a hardware perspective, the server structure can be as follows: Figure 1 As shown, it includes a processor 110, a memory 120, a communication component 130, and a display component 140.

[0048] The processor 110 can be a central processing unit (CPU) or a system on chip (SoC), etc. The processor 110 can be used to process various operation instructions, such as predicting the fuel consumption information of the target vehicle.

[0049] The memory 120 may include various volatile or non-volatile memories, such as solid-state disks (SSDs) and dynamic random access memory (DRAM). The memory 120 can be used to store initial data, intermediate data, and result data used in the relevant processing, such as the relationship between engine coolant temperature and reverse torque.

[0050] The communication component 130 can be a wired network connector, an ultra-wideband (UWB) technology module, a wireless fidelity (WiFi) module, a Bluetooth module, a cellular network communication module, etc. The communication component 130 can be used to transmit data with other devices, such as other servers or terminals. For example, it can send predicted fuel consumption information of a target vehicle to other devices.

[0051] The display component 140 can be a standalone screen, or a screen integrated with the user equipment body, a projector, etc. The screen can be a touch screen or a non-touch screen (which can be displayed remotely). The display component 140 is used to display predicted fuel consumption information, such as predicting fuel consumption information.

[0052] The following describes some concepts involved in the disclosed embodiments:

[0053] Torque

[0054] Torque is the magnitude of the rotational force of an engine crankshaft, measured in Newton-meters (Nm).

[0055] Effective torque

[0056] Effective torque is the torque that an engine outputs to the outside through the crankshaft to overcome friction.

[0057] Torque reserve

[0058] Torque reserve refers to an engine's ability to cope with sudden increases in resistance while driving. For example, when driving uphill, sufficient torque reserve allows you to climb without downshifting by simply pressing the accelerator; insufficient torque reserve requires downshifting. Torque reserve is the ratio of maximum torque to torque at rated power.

[0059] Catalyst heating torque reserve

[0060] Catalyst heating torque reserve is the torque reserve when the engine catalyst is heated.

[0061] Idle torque reserve

[0062] Idle torque reserve refers to the torque reserve of a car at idle speed.

[0063] Idle speed refers to the state of the engine running in neutral without accelerator. If the idle speed is too high, the fuel consumption will be high, and if the idle speed is too low, the idle speed will be unstable.

[0064] Reverse torque

[0065] Reverse towing occurs when a car is going downhill or decelerating rapidly, due to the inertia and friction of the engine's rotating components. Reverse towing torque is the torque of a car under reverse towing conditions.

[0066] Hot-running torque

[0067] The reversing torque in hot engine condition is the reversing torque when the engine coolant temperature is at the hot engine temperature (above a specified temperature threshold).

[0068] heating factor

[0069] The heating factor is the amount of fuel injected more when the engine coolant temperature is at ambient temperature compared to when the engine is hot.

[0070] Driving control strategy

[0071] Driving control strategies are the control strategies involved in the operation of a car during driving, such as shift control strategies, fuel cut-off control strategies, and pedal control strategies. For example, shift control strategies relate vehicle speed to gear position and determine the conditions for upshifting and downshifting. Pedal control strategies refer to the different responsiveness of the pedal depth in different driving modes; in Eco mode, the pedal is more responsive at the end, in Sport mode the pedal is more responsive at the beginning, and in Standard mode the pedal's responsiveness is more uniform across the entire range.

[0072] Idle speed control strategy

[0073] Idle speed control strategy is the control strategy for a car when it is idling. The idle speed control strategy includes the engine speed at idle.

[0074] Vehicle testing standards are generally used to test a vehicle's fuel consumption under various operating conditions. These standards typically define the driving characteristics of multiple operating conditions. Driving characteristics generally include the characteristics of braking, acceleration, idling, and other operations under the corresponding conditions, as well as information such as maximum vehicle speed. Fuel consumption testing methods generally specify the total test duration and the test time information corresponding to each operating condition type. This divides the total test duration into multiple time periods, each corresponding to a specific operating condition type. Several commonly used automotive testing standards exist, such as the New European Driving Cycle (NEDC), the World Light Vehicle Test Cycle (WLTC), and the China Light Vehicle Test Cycle (CLTC). This disclosure uses WLTC as an example for detailed description. WLTC includes four operating conditions: urban (low speed), suburban (medium speed), rural (high speed), and highway (ultra-high speed). The maximum vehicle speeds are 56.5 km / h, 76.6 km / h, 97.4 km / h, and 131.3 km / h, respectively. The number of braking and idling times decreases sequentially. The total test time for WLTC is 1800 seconds. The test time information for the four operating conditions is 0-589 seconds, 590-1022 seconds, 1023-1477 seconds, and 1478-1800 seconds, respectively.

[0075] During the test, the tester starts the target vehicle and begins timing. Before the end of the first time period, the vehicle is driven according to the driving characteristics of the first working condition type, and fuel consumption information is recorded. From the end of the first time period to the end of the second time period, the vehicle is driven according to the driving characteristics of the second working condition type, and fuel consumption information is recorded. This process continues until the total test time is reached. The recorded fuel consumption information is the fuel consumption information of the target vehicle under this test standard.

[0076] The methods described above for determining fuel consumption information are inefficient and costly. Furthermore, using these methods requires the driver to pre-check that the target vehicle meets the testing requirements and to pre-determine the testing location before driving the target vehicle at the testing location. This results in a lengthy preparation period for determining fuel consumption information.

[0077] To improve the efficiency of determining fuel consumption information, embodiments of this disclosure provide a method for determining fuel consumption information, such as... Figure 2 As shown, the method includes:

[0078] 201. Obtain the test time information, vehicle information, and engine information of the target vehicle for each working condition type under the target test standard.

[0079] When technicians want to predict the fuel consumption information of a target vehicle, they can collect relevant data from previous fuel consumption tests of a real vehicle (identical to the target vehicle).

[0080] The test time information corresponding to the operating condition type is the vehicle driving time range for fuel consumption testing under the target test standard. The vehicle information of the target vehicle includes the actual vehicle resistance, drag coefficient, frontal area, gearbox ratio, gearbox efficiency, wheel radius, and driving control strategy. The driving control strategy can include gear shifting, fuel cut-off, pedal control, etc. For example, the gear shifting control strategy is the correspondence between vehicle speed and gear and the judgment conditions for upshifting and downshifting, and the pedal control strategy is the correspondence between pedal depth and engine power.

[0081] The engine information of the target vehicle includes hot-engine drag torque, effective torque change information, catalyst heating torque reserve change information, idle torque reserve change information, idle speed control strategy, coolant temperature change characteristics, and heating factor.

[0082] The information on changes in catalyst heating torque reserve includes the primary correlation between catalyst heating torque reserve and vehicle driving time, which can be obtained through real-vehicle testing. Catalyst heating time is typically 60 seconds. During catalyst heating, increased engine speed and idle torque are required to achieve rapid catalyst heating. For example, the primary correlation between catalyst heating torque reserve and vehicle driving time can be shown in Table 1.

[0083] Table 1

[0084] Catalyst heating torque reserve Vehicle travel time 24.9 Nm 1 second 24.9 Nm 2 seconds …… …… 15 Nm 60 seconds 14.5 Nm 61 seconds …… ……

[0085] The information on changes in idle torque reserve includes a second correlation between idle torque reserve and vehicle driving time, which can be obtained through real-vehicle testing. Idle torque reserve is generally between 0 and 17.6 Nm. For example, the second correlation between idle torque reserve and vehicle driving time can be shown in Table 2.

[0086] Table 2

[0087] Idle torque reserve Vehicle travel time 10 Nm 1 second 11 Nm 2 seconds …… …… 15 Nm 60 seconds 15.5 Nm 61 seconds …… ……

[0088] Idle speed control strategies include idle speed control methods and engine idle speed performance.

[0089] The information on water temperature change characteristics includes the third correlation between engine water temperature and vehicle driving time under each operating condition of the target test standard, which can be obtained through real-vehicle testing. When the vehicle starts, the engine water temperature is the ambient temperature. As the vehicle travels, the engine water temperature rises until it reaches the warm-up engine temperature. The third correlation between engine water temperature and vehicle driving time is shown in Table 3.

[0090] Table 3

[0091]

[0092]

[0093] 202. Based on the test time information, vehicle information, engine information and fuel consumption simulation model corresponding to each working condition type under the target test standard, predict the fuel consumption information of the target vehicle under each working condition type under the target test standard.

[0094] In one possible implementation, the fuel consumption information of the target vehicle under each operating condition type under the target test standard is predicted, and the corresponding processing flow can be as follows: Figure 3 As shown, it includes the following steps:

[0095] 301. Torque reserve change information is determined based on catalyst heating torque reserve change information and idle torque reserve change information.

[0096] Among them, the torque reserve change information includes the fourth correspondence between torque reserve and vehicle driving time.

[0097] For a period of time after a vehicle begins to travel, the catalyst heating torque reserve is generally greater than the idle torque reserve. After the catalyst has finished heating, the catalyst heating torque reserve may become less than the idle torque reserve. We can first establish a correspondence table between catalyst heating torque reserve and vehicle travel time, and another correspondence table between idle torque reserve and vehicle travel time. In these two tables, for each vehicle travel time, we select the larger value from the catalyst heating torque reserve and idle torque reserve corresponding to that travel time as the torque reserve for that travel time. We repeat this process to determine the torque reserve for all vehicle travel times in the correspondence tables; this is the torque reserve change information.

[0098] For example, the fourth correspondence between torque reserve and vehicle driving time can be obtained through Tables 1 and 2 above, as shown in Table 4.

[0099] Table 4

[0100]

[0101]

[0102] 302. Determine the reversing torque variation information based on water temperature change characteristics.

[0103] Among them, the information on the change in reverse torque includes the fifth correspondence between the engine's reverse torque and the vehicle's driving time.

[0104] When a vehicle starts, the engine coolant temperature is the ambient temperature. As the vehicle travels, the engine coolant temperature rises until it reaches warm-up temperature. During this temperature change, the drag torque also changes. The correlation between engine coolant temperature and drag torque can be pre-stored. By analyzing the changes in engine coolant temperature and this correlation, the correlation between drag torque and vehicle travel time can be determined. For each vehicle travel time, the target engine coolant temperature corresponding to that travel time is obtained from the coolant temperature change feature information. Then, using the pre-stored correlation, the drag torque corresponding to that target engine coolant temperature is determined as the drag torque for that travel time, thus obtaining the drag torque change information.

[0105] For example, the relationship between engine coolant temperature and reverse torque can be shown in Table 5.

[0106] Table 5

[0107] Engine coolant temperature Reverse torque 30 degrees Celsius 40 Nm 31 degrees Celsius 39 Nm …… …… 40 degrees Celsius 30 Nm 41 degrees Celsius 29.5 Nm …… ……

[0108] 303. Based on the information on the change in reverse torque and the reverse torque under hot engine conditions, determine the actual change in reverse torque.

[0109] The information on actual towing torque variation includes a sixth correspondence between actual towing torque and vehicle travel time. The actual towing torque corresponding to each vehicle travel time is the difference between the towing torque in the warm-up state and the towing torque corresponding to that vehicle travel time.

[0110] For each vehicle's driving time, the target back-dragging torque corresponding to the driving time is obtained from the back-dragging torque change information. The difference between the back-dragging torque in the hot engine state and the target back-dragging torque is calculated as the actual back-dragging torque corresponding to the vehicle's driving time, thus obtaining the actual back-dragging torque change information.

[0111] For example, the reverse torque in a warm-up state is 60 Nm. According to Table 5 above, the correspondence between the actual reverse torque and the vehicle driving time can be obtained, as shown in Table 6.

[0112] Table 6

[0113] Actual reverse torque Vehicle travel time 20 Nm 1 second 21 Nm 2 seconds …… …… 30 Nm 60 seconds 31.5 Nm 61 seconds …… ……

[0114] 304. Based on the torque reserve change information and the actual reverse torque change information, determine the additional torque change information in front of the flywheel.

[0115] The flywheel front additional torque variation information includes the seventh correspondence between the flywheel front additional torque and vehicle travel time. The flywheel front additional torque corresponding to each vehicle travel time is the sum of torque reserve and actual reverse torque.

[0116] For each vehicle's driving time, the target torque reserve corresponding to the vehicle's driving time is obtained from the torque reserve change information, and the target actual reverse torque corresponding to the vehicle's driving time is obtained from the actual reverse torque change information. The sum of the target torque reserve and the target actual reverse torque is calculated as the flywheel front additional torque corresponding to the vehicle's driving time, thus obtaining the flywheel front additional torque change information.

[0117] For example, the relationship between the additional torque in front of the flywheel and the vehicle's travel time can be shown in Table 7.

[0118] Table 7

[0119] Additional torque in front of flywheel Vehicle travel time 44.9 Nm 1 second 45.9 Nm 2 seconds …… …… 45 Nm 60 seconds 47 Nm 61 seconds …… ……

[0120] 305 will input the test time information, vehicle information of the target vehicle, idle speed control strategy, effective torque change information, flywheel front additional torque and heating factor corresponding to each working condition type under the target test standard into the fuel consumption simulation model to obtain fuel consumption information.

[0121] Based on the sum of engine speed, effective engine torque, and additional torque in front of the flywheel at each moment, the instantaneous fuel consumption is found in the universal characteristic table. The sum of the instantaneous fuel consumption at each moment is multiplied by the heating factor to obtain the fuel consumption information. The universal characteristic table includes the correspondence between engine speed, torque, and instantaneous fuel consumption, and the sum of effective engine torque and additional torque in front of the flywheel corresponds to the torque in the universal characteristic table.

[0122] Input the above information into the fuel consumption simulation model to obtain fuel consumption information, which is the fuel consumption per 100 kilometers. For example, if the fuel consumption information of the target vehicle is 6.47, it means that the vehicle consumes 6.47 liters of fuel per 100 kilometers.

[0123] In this embodiment of the disclosure, fuel consumption information of the target vehicle under each working condition under the target test standard can be obtained simply by using the test time information, vehicle information, engine information and fuel consumption simulation model corresponding to each working condition type under the target test standard. The driver does not need to conduct actual vehicle testing according to the test standard. This can improve the efficiency of determining fuel consumption information and reduce the cost of determining fuel consumption information.

[0124] All of the above-mentioned optional technical solutions can be combined in any way to form optional embodiments of this disclosure, and will not be described in detail here.

[0125] Based on the same technical concept, embodiments of this disclosure also provide a device for determining fuel consumption information, such as... Figure 4 As shown, the device includes:

[0126] The acquisition module 410 is used to acquire test time information, target vehicle information, and target vehicle engine information corresponding to each operating condition type under the target test standard. The test time information corresponding to each operating condition type is the vehicle driving time range for fuel consumption testing under the target test standard. The target vehicle information includes the target vehicle's actual vehicle resistance, drag coefficient, frontal area, transmission ratio, transmission efficiency, wheel radius, and driving control strategy. The target vehicle engine information includes hot-engine drag torque, effective torque change information, catalyst heating torque reserve change information, idle torque reserve change information, idle speed control strategy, coolant temperature change characteristics, and heating factor. The catalyst heating torque reserve change information includes a first correspondence between catalyst heating torque reserve and vehicle driving time; the idle torque reserve change information includes a second correspondence between idle torque reserve and vehicle driving time; and the coolant temperature change characteristics include a third correspondence between engine coolant temperature and vehicle driving time under each operating condition type of the target test standard. Specifically, it can implement the processing function of step 201 above, as well as other implicit steps.

[0127] The prediction module 420 is used to predict the fuel consumption information of the target vehicle under each operating condition type under the target test standard, based on the test time information, vehicle information, engine information, and fuel consumption simulation model corresponding to each operating condition type under the target test standard. Specifically, it can implement the processing function of step 202 above, as well as other implicit steps.

[0128] In one possible implementation, the prediction module 420 is used to: determine torque reserve change information based on catalyst heating torque reserve change information and idle torque reserve change information, wherein the torque reserve change information includes a fourth correspondence between torque reserve and vehicle driving time; determine back-dragging torque change information based on water temperature change characteristic information, wherein the back-dragging torque change information includes a fifth correspondence between engine back-dragging torque and vehicle driving time; determine actual back-dragging torque change information based on back-dragging torque change information and hot engine back-dragging torque, wherein the actual back-dragging torque change information includes a sixth correspondence between actual back-dragging torque and vehicle driving time; determine flywheel front additional torque change information based on torque reserve change information and actual back-dragging torque change information, wherein the flywheel front additional torque change information includes a seventh correspondence between flywheel front additional torque and vehicle driving time; and input the test time information corresponding to each operating condition type under the target test standard, the vehicle information of the target vehicle, the idle speed control strategy, the effective torque change information, the flywheel front additional torque, and the heating factor into the fuel consumption simulation model to obtain fuel consumption information. Specifically, it can implement the processing functions of steps 301, 302, 303, 304, and 305 mentioned above, as well as other implicit steps.

[0129] In one possible implementation, the prediction module 420 is used to: for each vehicle driving time, select the larger value from the catalyst heating torque reserve and the idle torque reserve corresponding to the vehicle driving time as the torque reserve corresponding to the vehicle driving time, thereby obtaining torque reserve change information. Specifically, this can implement the processing function of step 301 above, as well as other implicit steps.

[0130] In one possible implementation, the prediction module 420 is used to: for each vehicle driving time, obtain the target engine coolant temperature corresponding to the vehicle driving time from the coolant temperature change feature information; determine the reverse torque corresponding to the target engine coolant temperature from the pre-stored correspondence between engine coolant temperature and reverse torque, and use this as the reverse torque corresponding to the vehicle driving time, thereby obtaining the reverse torque change information. Specifically, this can implement the processing function of step 302 above, as well as other implicit steps.

[0131] In one possible implementation, the prediction module 420 is used to: for each vehicle travel time, obtain the target back-draft torque corresponding to the vehicle travel time from the back-draft torque change information, calculate the difference between the hot-engine state back-draft torque and the target back-draft torque as the actual back-draft torque corresponding to the vehicle travel time, and obtain the actual back-draft torque change information. Specifically, it can implement the processing function of step 303 above, as well as other implicit steps.

[0132] In one possible implementation, the prediction module 420 is used to: for each vehicle travel time, obtain the target torque reserve corresponding to the vehicle travel time from the torque reserve change information, obtain the target actual reverse torque corresponding to the vehicle travel time from the actual reverse torque change information, calculate the sum of the target torque reserve and the target actual reverse torque as the flywheel front additional torque corresponding to the vehicle travel time, and obtain the flywheel front additional torque change information. Specifically, it can implement the processing function of step 304 above, as well as other implicit steps.

[0133] The acquisition module 410 and prediction module 420 mentioned above can be implemented by a processor, or by a processor in conjunction with a memory and a display.

[0134] In this embodiment of the disclosure, fuel consumption information of the target vehicle under each working condition under the target test standard can be obtained simply by using the test time information, vehicle information, engine information and fuel consumption simulation model corresponding to each working condition type under the target test standard. The driver does not need to conduct actual vehicle testing according to the test standard. This can improve the efficiency of determining fuel consumption information and reduce the cost of determining fuel consumption information.

[0135] The above embodiments of the device for determining fuel consumption information are illustrated only by the division of the functional modules described above. In practical applications, the functions can be assigned to different functional modules as needed, that is, the internal structure of the electric equipment can be divided into different functional modules to complete all or part of the functions described above. Furthermore, the device for determining fuel consumption information and the method for determining fuel consumption information provided in the above embodiments belong to the same concept, and their specific implementation process is detailed in the method embodiments, which will not be repeated here.

[0136] This disclosure also provides a computer-readable storage medium. The computer-readable storage medium can be any available medium that a computer device can store, or a data storage device such as a data center containing one or more available media. The available medium can be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid-state drive). The computer-readable storage medium includes instructions that instruct a computing device to perform a method for determining fuel consumption information.

[0137] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for determining fuel consumption information, characterized in that, The method includes: Acquire test time information, target vehicle information, and engine information for each operating condition type under the target test standard. The test time information for each operating condition type refers to the vehicle driving time range for fuel consumption testing under the target test standard. The target vehicle information includes the vehicle's actual drag, drag coefficient, frontal area, transmission ratio, transmission efficiency, wheel radius, and driving control strategy. The target vehicle's engine information includes hot-engine drag torque, effective torque change information, catalyst heating torque reserve change information, idle torque reserve change information, idle speed control strategy, coolant temperature change characteristics, and heating factor. The catalyst heating torque reserve change information includes a first correspondence between catalyst heating torque reserve and vehicle driving time. The idle torque reserve change information includes a second correspondence between idle torque reserve and vehicle driving time. The coolant temperature change characteristics include a third correspondence between engine coolant temperature and vehicle driving time under each operating condition type of the target test standard. Based on the test time information corresponding to each operating condition type under the target test standard, the vehicle information, the engine information, and the fuel consumption simulation model, the fuel consumption information of the target vehicle corresponding to each operating condition type under the target test standard is predicted; wherein... The method of predicting the fuel consumption information of the target vehicle for each operating condition type under the target test standard based on the test time information, vehicle information, engine information, and fuel consumption simulation model under the target test standard includes: Torque reserve change information is determined based on the catalyst heating torque reserve change information and the idle torque reserve change information, wherein the torque reserve change information includes a fourth correspondence between torque reserve and vehicle driving time; Based on the water temperature change characteristic information, the reverse torque change information is determined, wherein the reverse torque change information includes a fifth correspondence between the engine reverse torque and the vehicle driving time; Based on the information on the change in the back-dragging torque and the back-dragging torque under the hot engine state, the information on the change in the actual back-dragging torque is determined. The information on the change in the actual back-dragging torque includes a sixth correspondence between the actual back-dragging torque and the vehicle's driving time. Based on the torque reserve change information and the actual reverse torque change information, the flywheel front additional torque change information is determined, wherein the flywheel front additional torque change information includes the seventh correspondence between the flywheel front additional torque and the vehicle driving time; The test time information corresponding to each working condition type under the target test standard, the vehicle information of the target vehicle, the idle speed control strategy, the effective torque change information, the flywheel front additional torque and the heating factor are input into the fuel consumption simulation model to obtain the fuel consumption information.

2. The method according to claim 1, characterized in that, The determination of torque reserve change information based on the catalyst heating torque reserve change information and the idle torque reserve change information includes: For each vehicle driving time, the larger value between the catalyst heating torque reserve and the idle torque reserve corresponding to the vehicle driving time is selected as the torque reserve corresponding to the vehicle driving time, thus obtaining the torque reserve change information.

3. The method according to claim 1, characterized in that, The determination of the reversing torque change information based on the water temperature change characteristic information includes: For each vehicle's driving time, the target engine coolant temperature corresponding to the driving time is obtained from the coolant temperature change feature information. In the pre-stored correspondence between engine coolant temperature and towing torque, the towing torque corresponding to the target engine coolant temperature is determined as the towing torque corresponding to the driving time, thus obtaining the towing torque change information.

4. The method according to claim 1, characterized in that, The step of determining the actual reverse torque change information based on the reverse torque change information and the reverse torque under heat engine conditions includes: For each vehicle's driving time, the target back-dragging torque corresponding to the vehicle's driving time is obtained from the back-dragging torque change information. The difference between the back-dragging torque in the hot engine state and the target back-dragging torque is calculated as the actual back-dragging torque corresponding to the vehicle's driving time, thus obtaining the actual back-dragging torque change information.

5. The method according to claim 1, characterized in that, The determination of the additional torque change information in front of the flywheel based on the torque reserve change information and the actual reverse torque change information includes: For each vehicle driving time, the target torque reserve corresponding to the vehicle driving time is obtained from the torque reserve change information, and the target actual back-dragging torque corresponding to the vehicle driving time is obtained from the actual back-dragging torque change information. The sum of the target torque reserve and the target actual back-dragging torque is calculated as the flywheel front additional torque corresponding to the vehicle driving time, thus obtaining the flywheel front additional torque change information.

6. A device for determining fuel consumption information, characterized in that, The device includes: The acquisition module is used to acquire test time information, vehicle information of the target vehicle, and engine information of the target vehicle for each operating condition type under the target test standard. The test time information for each operating condition type is the vehicle driving time range for fuel consumption testing under the target test standard. The vehicle information of the target vehicle includes the target vehicle's actual vehicle resistance, drag coefficient, frontal area, transmission ratio, transmission efficiency, wheel radius, and driving control strategy. The engine information of the target vehicle includes hot-engine drag torque, effective torque change information, catalyst heating torque reserve change information, idle torque reserve change information, idle speed control strategy, coolant temperature change characteristics, and heating factor. The catalyst heating torque reserve change information includes a first correspondence between catalyst heating torque reserve and vehicle driving time. The idle torque reserve change information includes a second correspondence between idle torque reserve and vehicle driving time. The coolant temperature change characteristics include a third correspondence between engine coolant temperature and vehicle driving time under each operating condition type of the target test standard. The prediction module is used to predict the fuel consumption information of the target vehicle under each working condition type under the target test standard based on the test time information corresponding to each working condition type under the target test standard, the vehicle information, the engine information, and the fuel consumption simulation model. The method of predicting the fuel consumption information of the target vehicle for each operating condition type under the target test standard based on the test time information, vehicle information, engine information, and fuel consumption simulation model under the target test standard includes: Torque reserve change information is determined based on the catalyst heating torque reserve change information and the idle torque reserve change information, wherein the torque reserve change information includes a fourth correspondence between torque reserve and vehicle driving time; Based on the water temperature change characteristic information, the reverse torque change information is determined, wherein the reverse torque change information includes a fifth correspondence between the engine reverse torque and the vehicle driving time; Based on the information on the change in the back-dragging torque and the back-dragging torque under the hot engine state, the information on the change in the actual back-dragging torque is determined. The information on the change in the actual back-dragging torque includes a sixth correspondence between the actual back-dragging torque and the vehicle's driving time. Based on the torque reserve change information and the actual reverse torque change information, the flywheel front additional torque change information is determined, wherein the flywheel front additional torque change information includes the seventh correspondence between the flywheel front additional torque and the vehicle driving time; The test time information corresponding to each working condition type under the target test standard, the vehicle information of the target vehicle, the idle speed control strategy, the effective torque change information, the flywheel front additional torque and the heating factor are input into the fuel consumption simulation model to obtain the fuel consumption information.

7. A computer device, characterized in that, The computer device includes a memory and a processor, the memory being used to store computer instructions; The processor executes computer instructions stored in the memory to cause the computer device to perform the method described in any one of claims 1-5.

8. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer program code, which, when executed by a computer device, performs the method described in any one of claims 1-5.

9. A computer program product, characterized in that, The computer program product includes computer program code, which, when executed by a computer device, performs the method described in any one of claims 1-5.

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