Vehicle powertrain matching method, device, computer equipment and storage medium

Abstract

The present application relates to a vehicle powertrain matching method, apparatus, device, and medium. The method includes: obtaining vehicle configuration parameters, including the vehicle's wheel radius; obtaining the vehicle's operating road condition parameters; determining a preset range of a corresponding power economy parameter based on the operating road condition parameters; obtaining a preset vehicle speed and an economic speed range of an alternative powertrain; and determining an economic range of the total transmission ratio corresponding to the alternative powertrain based on the economic speed range, the preset vehicle speed, and the wheel radius; determining an economic range of the engine torque of the alternative powertrain based on the economic range of the total transmission ratio of the alternative powertrain, the preset range of the power economy parameter, and the vehicle's configuration parameters; and selecting an alternative powertrain with an economic speed within the economic speed range and a corresponding engine torque within the economic range as the matching powertrain. This allows the user to be matched with the most suitable powertrain based on their actual needs.

Description

Technical Field

[0001] The present application relates to the field of vehicle design technology, and in particular to a vehicle powertrain matching method, apparatus, computer equipment, and storage medium. Background Art

[0002] With the advancement of automotive technology, people's demands for vehicles are becoming increasingly refined. Due to the varying usage patterns of different users, vehicle operating conditions can vary significantly. Even vehicles with identical configurations can experience significant differences in fuel consumption under different operating conditions. Therefore, the challenge is to tailor the appropriate powertrain to the user's actual operating conditions, ensuring optimal fuel economy while maintaining power levels.

[0003] In conventional technology, a corresponding powertrain is selected based on the curb weight of the vehicle, thereby obtaining a powertrain that meets the power requirements corresponding to the curb weight of the vehicle and also meets economic indicators.

[0004] However, traditional technology only matches the powertrain based on curb weight, rather than the vehicle's actual operating conditions. This lacks specificity and fails to determine the powertrain that best suits the user's actual vehicle operating conditions. Summary of the Invention

[0005] Based on this, it is necessary to provide a vehicle powertrain matching method, device, computer equipment and storage medium that can select the most suitable powertrain according to the actual operating conditions of the vehicle to address the above technical problems.

[0006] A vehicle powertrain matching method, wherein the powertrain includes an engine and a transmission, and the method comprises:

[0007] Acquiring configuration parameters of the vehicle, wherein the configuration parameters include a wheel radius of the vehicle;

[0008] Obtaining the vehicle's operating road condition parameters;

[0009] Determining a preset range of a corresponding power economy parameter according to the operating road condition parameter;

[0010] Obtaining a preset vehicle speed and an economic speed range of an alternative powertrain, and determining an economic range of a total transmission ratio corresponding to the alternative powertrain based on the economic speed range, the preset vehicle speed, and the wheel radius;

[0011] determining an economic range of the engine torque of the alternative powertrain according to the economic range of the total transmission ratio of the alternative powertrain, the preset range of the power economy parameter, and the configuration parameters of the vehicle;

[0012] An alternative powertrain whose economic speed is within the economic speed range and whose corresponding engine torque is also within the economic range of the engine torque is selected as the matching powertrain.

[0013] In one embodiment, the selecting of an alternative powertrain whose economic speed is within the economic speed range and whose corresponding engine torque is also within the economic range of the engine torque as a matching powertrain includes: selecting an alternative powertrain with the largest power economy parameter as a matching powertrain among the alternative powertrains whose economic speed is within the economic speed range and whose corresponding engine torque is also within the economic range of the engine torque.

[0014] In one embodiment, the operating road condition parameters include road type and slope type; the road type includes expressways and non-expressways; the slope types include flat roads, hills, and mountain roads; the flat roads are roads in which the slope length accounts for less than 5% of the total road length, the hills are roads in which the slope length accounts for greater than or equal to 5% and less than or equal to 30% of the total road length, and the mountain roads are roads in which the slope length accounts for more than 30% of the total road length.

[0015] In one embodiment, the expression of the power economy parameter is as follows:

[0016]

[0017] Among them, Q H is the power economy parameter, T is the engine torque, i g is the rear axle speed ratio, i0 is the highest gear ratio of the gearbox, i g i0 is the total transmission ratio, η is the transmission efficiency, f is the rolling resistance, r is the wheel radius, M is the total mass of the vehicle, and g is the acceleration due to gravity.

[0018] In one embodiment, the preset range of the corresponding power economy parameter is determined based on the operating road condition parameter, including: if the road type is an expressway and the slope type is a flat road, the power economy parameter is greater than a first high-speed threshold and less than or equal to a second high-speed threshold; if the road type is an expressway and the slope type is a hilly road, the power economy parameter is greater than the second high-speed threshold and less than or equal to a third high-speed threshold; if the road type is an expressway and the slope type is a mountain road, the power economy parameter is greater than the third high-speed threshold; if the road type is a non-expressway and the slope type is a flat road, the power economy parameter is greater than the first non-expressway threshold and less than or equal to the second non-expressway threshold; if the road type is a non-expressway and the slope type is a hilly road, the power economy parameter is greater than the second non-expressway threshold and less than or equal to the third non-expressway threshold; if the road type is a non-expressway and the slope type is a mountain road, the power economy parameter is greater than the third non-expressway threshold.

[0019] In one embodiment, obtaining a preset vehicle speed and an economic speed range of an alternative powertrain, and determining an economic speed range of a total transmission ratio corresponding to the alternative powertrain based on the economic speed range, the preset vehicle speed, and the wheel radius includes determining the economic speed range of the total transmission ratio corresponding to the alternative powertrain using the following formula:

[0020]

[0021] Wherein, V is the preset vehicle speed, n is the economic speed, i g is the rear axle speed ratio, i0 is the highest gear ratio of the gearbox, i g i0 is the total transmission ratio, and r is the wheel radius.

[0022] In one embodiment, determining the economic range of the engine torque of the alternative powertrain according to the economic range of the total transmission ratio of the alternative powertrain, the preset range of the power economy parameter, and the configuration parameters of the vehicle includes:

[0023] The economic range of the engine torque of the alternative powertrain is determined by the following formula:

[0024]

[0025] Wherein, T is the engine torque, Q H is the power economic parameter, i g is the rear axle speed ratio, i0 is the highest gear ratio of the gearbox, i gi0 is the total transmission ratio, η is the transmission efficiency, f is the rolling resistance, r is the wheel radius, M is the total mass of the vehicle, and g is the acceleration due to gravity.

[0026] A vehicle powertrain matching device, the device comprising: a configuration acquisition module for acquiring configuration parameters of the vehicle, the configuration parameters including the wheel radius of the vehicle; a road condition acquisition module for acquiring operating road condition parameters of the vehicle; a range determination module for determining a preset range of corresponding power economy parameters based on the operating road condition parameters; a total transmission ratio determination module for acquiring a preset vehicle speed and an economic speed range of an alternative powertrain, and determining an economic range of the total transmission ratio corresponding to the alternative powertrain based on the economic speed range, the preset vehicle speed, and the wheel radius; a torque determination module for determining an economic range of the engine torque of the alternative powertrain based on the economic range of the total transmission ratio of the alternative powertrain, the preset range of the power economy parameters, and the configuration parameters of the vehicle; and an assembly matching module for selecting an alternative powertrain whose economic speed is within the economic speed range and whose corresponding engine torque is also within the economic range of the engine torque as a matching powertrain.

[0027] A computer device includes a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the following steps are implemented:

[0028] Acquiring configuration parameters of the vehicle, wherein the configuration parameters include a wheel radius of the vehicle;

[0029] Obtaining the vehicle's operating road condition parameters;

[0030] Determining a preset range of a corresponding power economy parameter according to the operating road condition parameter;

[0031] Obtaining a preset vehicle speed and an economic speed range of an alternative powertrain, and determining an economic range of a total transmission ratio corresponding to the alternative powertrain based on the economic speed range, the preset vehicle speed, and the wheel radius;

[0032] determining an economic range of the engine torque of the alternative powertrain according to the economic range of the total transmission ratio of the alternative powertrain, the preset range of the power economy parameter, and the configuration parameters of the vehicle;

[0033] An alternative powertrain whose economic speed is within the economic speed range and whose corresponding engine torque is also within the economic range of the engine torque is selected as the matching powertrain.

[0034] A computer-readable storage medium stores a computer program, which, when executed by a processor, implements the following steps:

[0035] Acquiring configuration parameters of the vehicle, wherein the configuration parameters include a wheel radius of the vehicle;

[0036] Obtaining the vehicle's operating road condition parameters;

[0037] Determining a preset range of a corresponding power economy parameter according to the operating road condition parameter;

[0038] Obtaining a preset vehicle speed and an economic speed range of an alternative powertrain, and determining an economic range of a total transmission ratio corresponding to the alternative powertrain based on the economic speed range, the preset vehicle speed, and the wheel radius;

[0039] determining an economic range of the engine torque of the alternative powertrain according to the economic range of the total transmission ratio of the alternative powertrain, the preset range of the power economy parameter, and the configuration parameters of the vehicle;

[0040] An alternative powertrain whose economic speed is within the economic speed range and whose corresponding engine torque is also within the economic range of the engine torque is selected as the matching powertrain.

[0041] The above-described vehicle powertrain matching method, apparatus, computer device, and storage medium determine a preset range of corresponding power economy parameters based on the vehicle's road condition parameters, thereby enabling targeted selection of appropriate power economy parameter ranges for different vehicle road conditions, resulting in optimal vehicle power and economy. The economic range of the total transmission ratio corresponding to the vehicle's powertrain is determined based on the vehicle's driving speed, the economic speed range of the vehicle's powertrain, and the vehicle's wheel radius, thereby obtaining the total transmission ratio range corresponding to the powertrain's economic operation. The economic range of the powertrain's engine torque is then calculated based on the economic speed range, the power economy parameter, and the vehicle's configuration parameters, thereby determining the economic range of the powertrain's engine output power. A powertrain with an economic speed within the economic speed range and an engine torque within the economic torque range is then selected as the matching powertrain. This allows the user to match the most appropriate powertrain based on the user's vehicle's actual operating conditions, ensuring optimal economy while meeting the vehicle's power performance indicators. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the conventional technology, the following briefly introduces the drawings required for use in the embodiments or the conventional technology descriptions. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0043] Figure 1 is a flow chart of a vehicle powertrain matching method in one embodiment;

[0044] Figure 2 is a universal characteristic diagram of a powertrain in one embodiment;

[0045] Figure 3 is a structural diagram of a vehicle powertrain matching device in one embodiment;

[0046] Figure 4 FIG. 1 is a diagram showing the internal structure of a computer device in one embodiment. DETAILED DESCRIPTION

[0047] To facilitate understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. The accompanying drawings provide embodiments of the present application. However, the present application may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of the present application more thorough and comprehensive.

[0048] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application pertains. The terms used herein in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application.

[0049] It will be understood that the terms "first," "second," etc. used herein may be used to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish a first element from another element.

[0050] Spatially relative terms such as "under," "beneath," "beneath," "under," "above," "above," etc., may be used herein to describe the relationship of an element or feature shown in the figures to other elements or features. It should be understood that in addition to the orientations shown in the figures, spatially relative terms also include different orientations of the device in use and operation. For example, if the device in the drawings is turned over, the element or feature described as "under" or "beneath" or "beneath" the other elements will be oriented as "above" the other elements or features. Thus, the exemplary terms "under" and "under" can include both upper and lower orientations. In addition, the device can also include alternative orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptors used herein are interpreted accordingly.

[0051] It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to the other element or connected to the other element through an intervening element. In addition, the "connection" in the following embodiments should be understood as "electrical connection", "communication connection", etc., if there is transmission of electrical signals or data between the connected objects.

[0052] When used herein, the singular forms "a", "an", and "the" may also include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include / comprise" or "have" and the like specify the presence of stated features, integers, steps, operations, components, parts, or combinations thereof, but do not preclude the possibility of the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

[0053] As described in the background, existing powertrain matching methods suffer from an inability to tailor the powertrain to the actual operating conditions of a user's vehicle. The inventors discovered that this problem arises because existing powertrain matching methods only select a powertrain that meets power and economy requirements based on the vehicle's curb weight, without matching the powertrain based on the vehicle's actual operating conditions. This lacks specificity and prevents the configuration of a powertrain that best suits the user's actual operating conditions.

[0054] Based on the above reasons, the present invention provides a vehicle powertrain matching method, apparatus, computer device and storage medium, which can select the most appropriate powertrain configuration according to the actual operating conditions of the vehicle.

[0055] In one embodiment, Figure 1 As shown, a vehicle powertrain matching method is provided, the method comprising:

[0056] Step S100: Acquire vehicle configuration parameters, including the vehicle's wheel radius.

[0057] Step S110, obtaining the vehicle's operating road condition parameters.

[0058] Step S120 : determining a preset range of a corresponding power economy parameter according to the operating road condition parameter.

[0059] Step S130 , obtaining a preset vehicle speed and an economic speed range of the alternative powertrain, and determining an economic range of the total transmission ratio corresponding to the alternative powertrain based on the economic speed range, the preset vehicle speed, and the wheel radius.

[0060] Step S140 : determining an economic range of the engine torque of the alternative powertrain according to the economic range of the total transmission ratio of the alternative powertrain, a preset range of the power economy parameter, and configuration parameters of the vehicle.

[0061] In step S150 , an alternative powertrain having an economic speed within an economic speed range and a corresponding engine torque within an economic range of engine torque is selected as a matching powertrain.

[0062] Specifically, the powertrain includes an engine and a transmission.

[0063] In this embodiment, the preset range of the corresponding power economy parameter is determined based on the vehicle's road condition parameters. This allows for the selection of appropriate power economy parameter ranges for different road conditions, resulting in optimal vehicle power and economy. The economic range of the total transmission ratio corresponding to the vehicle's powertrain is determined based on the vehicle's driving speed, the economic speed range of the vehicle's powertrain, and the vehicle's wheel radius, thereby determining the total transmission ratio range corresponding to the powertrain's economic operation. The economic range of the powertrain's engine torque is then calculated based on the economic speed range of the total transmission ratio, the power economy parameter, and the vehicle's configuration parameters, thereby determining the economic range of the powertrain's engine output power. A powertrain with an economic speed within this range and an engine torque within this range is then selected as the matching powertrain. This allows for the user to be matched with the most appropriate powertrain based on the user's actual vehicle operating conditions, ensuring optimal economy while meeting the vehicle's desired power performance indicators.

[0064] Specifically, the operating road condition parameters include road type and slope type.

[0065] Specifically, the road types include expressways and non-expressways.

[0066] Specifically, the slope types include flat roads, hilly roads, and mountainous roads. A flat road is defined as a road with a slope ratio of less than 5% of the total road length; a hilly road is defined as a road with a slope ratio of greater than or equal to 5% and less than or equal to 30% of the total road length; and a mountainous road is defined as a road with a slope ratio of greater than 30% of the total road length.

[0067] Specifically, the configuration parameters also include the total mass of the vehicle, the gravitational acceleration of the vehicle's operating area, the rolling resistance of the vehicle's operating section, and the vehicle's transmission efficiency.

[0068] For example, for example, Figure 2The figure shows a universal characteristic diagram for a powertrain. The economic speed range for this powertrain is 1200 (r / min)-1500 (r / min), corresponding to an economic engine torque range of 600 Nm-1300 Nm. Therefore, if both the economic speed range and the economic torque range of a powertrain are within this range, the powertrain meets the required power and economy. The curve P1+3.7+0.507 in the figure represents the powertrain's power and economy parameters. This curve falls within the box outlined by the economic speed range and engine torque range, so the powertrain configuration corresponding to this curve meets the required power and economy.

[0069] In one embodiment, step S150 further includes:

[0070] In step S1501 , among the candidate powertrains whose economic speed is within the economic speed range and whose corresponding engine torque is also within the economic range of the engine torque, the candidate powertrain with the largest power economy parameter is selected as the matching powertrain.

[0071] In this embodiment, if multiple alternative powertrains meet both the economical speed requirement and the economical engine torque requirement, the one with the highest power economy parameter is selected as the matching powertrain. Because the power economy parameter comprehensively reflects the vehicle's power and economy, if all alternative powertrains meet both the power and economy requirements, the one with the best power and economy is selected as the matching powertrain, thereby matching the most suitable powertrain for the user.

[0072] In one embodiment, the expression of the power economy parameter is as follows:

[0073]

[0074] Among them, Q H is the power economy parameter, T is the engine torque, i g is the rear axle speed ratio, i0 is the highest gear ratio of the gearbox, i g i0 is the total transmission ratio, η is the transmission efficiency, f is the rolling resistance, r is the wheel radius, M is the total vehicle mass, and g is the acceleration due to gravity.

[0075] In this embodiment, the power economy parameter is positively correlated with the engine torque, total transmission ratio, and transmission efficiency, and negatively correlated with the rolling resistance, wheel radius, and total vehicle mass. Therefore, the power economy parameter can comprehensively reflect the power and economy of the vehicle and can be used as an indicator to measure the power economy of the vehicle.

[0076] In one embodiment, step S120 further includes:

[0077] Step S1201: If the road type is an expressway and the slope type is a flat road, the power economy parameter is greater than a first high-speed threshold and less than or equal to a second high-speed threshold.

[0078] Step S1202: If the road type is a highway and the slope type is a hill, the power economy parameter is greater than the second high-speed threshold and less than or equal to the third high-speed threshold.

[0079] Step S1203: If the road type is an expressway and the slope type is a mountain road, the power economy parameter is greater than the third high-speed threshold.

[0080] Step S1204: If the highway type is a non-highway and the slope type is a flat road, the power economy parameter is greater than the first non-highway threshold and less than or equal to the second non-highway threshold.

[0081] Step S1205: If the road type is non-highway and the slope type is hilly, the power economy parameter is greater than the second non-highway threshold and less than or equal to the third non-highway threshold.

[0082] Step S1206: If the road type is a non-highway road and the slope type is a mountain road, the power economy parameter is greater than the third non-highway threshold.

[0083] Specifically, the correspondence table between the operating road condition parameters and the power economy parameters is shown in Table 1 below:

[0084] Table 1. Correspondence between road condition parameters and power economy parameters

[0085]

[0086]

[0087] Among them, a1, a2, a3, b1, b2, and b3 are the first high-speed threshold, the second high-speed threshold, the third high-speed threshold, the first non-high-speed threshold, the second non-high-speed threshold, and the third non-high-speed threshold, respectively. H These thresholds are obtained through a large amount of empirical data experiments.

[0088] In this embodiment, the value range of the corresponding power economy parameter is selected according to the actual operating road condition parameters, and the most appropriate power economy parameter can be selected for the vehicle according to the actual vehicle operating road condition, thereby providing reference data for the subsequent selection of the most appropriate powertrain.

[0089] In one embodiment, step S130 includes:

[0090] The economic range of the total transmission ratio corresponding to the alternative powertrain is determined by the following formula:

[0091]

[0092] Among them, V is the preset speed, n is the economic speed, i g is the rear axle speed ratio, i0 is the highest gear ratio of the gearbox, i g i0 is the total transmission ratio, and r is the wheel radius.

[0093] In this embodiment, the economic range of the total transmission ratio of the powertrain is determined based on the vehicle's selected wheel radius, economic speed range, and vehicle speed, thereby determining the range in which the total transmission ratio of the powertrain lies, providing data for subsequent calculation of the economic range of the powertrain's engine torque.

[0094] In one embodiment, step S140 includes:

[0095] The economic range of the engine torque of the alternative powertrain is determined by the following formula:

[0096]

[0097] Where T is the engine torque, Q H is the power economic parameter, i g is the rear axle speed ratio, i0 is the highest gear ratio of the gearbox, i g i0 is the total transmission ratio, η is the transmission efficiency, f is the rolling resistance, r is the wheel radius, M is the total vehicle mass, and g is the acceleration due to gravity.

[0098] In this embodiment, the economic range of the engine torque is determined based on the economic range of the total transmission ratio of the powertrain, thereby obtaining the economic range of the engine torque corresponding to the power and economy requirements, thereby screening the required powertrain and achieving powertrain matching.

[0099] For example, if the user is an express logistics company and the road conditions are primarily flat highways, the corresponding power and economy parameter range is selected according to the recommended power and economy parameter range. The user's vehicle load capacity is standard load. Since the logistics company carries cargo on all trips, the total vehicle mass is fixed at 49 tons. There is no need to analyze the powertrain configuration corresponding to the vehicle's unloaded weight. Due to the timeliness of express logistics, the vehicle's typical speed is 75 km / h. The selected vehicle tires are 295 / 80-22.5 tires with a radius of 0.507 meters. The selected engine model corresponds to an economic speed range of 1200-1500 rpm, which can be calculated to be a total transmission ratio range of 3.6-3.8 (hypothetical value). The economic engine torque range is then calculated to be 1600 Nm-1800 Nm (hypothetical value). If the engine's maximum output torque is within this range, then the engine meets the power and economy requirements.

[0100] If the proportion of the mileage traveled when the user's vehicle is unloaded accounts for more than 30% of the total mileage, it is necessary to use the above method to analyze the corresponding powertrain configuration for the vehicle's total weight and speed when unloaded and the total weight and speed when fully loaded, and then select a powertrain that meets the power economy requirements of both unloaded and fully loaded.

[0101] It should be understood that although Figure 1 The steps in the flowchart are shown in sequence as indicated by the arrows, but these steps are not necessarily executed in the order indicated by the arrows. Unless otherwise specified in this document, there is no strict order restriction for the execution of these steps, and these steps can be executed in other orders. In addition, Figure 1 At least part of the steps may include multiple steps or multiple stages. These steps or stages are not necessarily performed at the same time, but can be performed at different times. The order of execution of these steps or stages is not necessarily one by one, but can be performed in turn or alternately with other steps or at least part of the steps or stages in other steps.

[0102] In one embodiment, Figure 3 As shown, a vehicle powertrain matching device is provided, including: a configuration acquisition module 901, a road condition acquisition module 902, a range determination module 903, a total transmission ratio determination module 904, a torque determination module 905, and an assembly matching module 906, wherein:

[0103] The configuration acquisition module 901 is used to acquire configuration parameters of the vehicle, including the wheel radius of the vehicle.

[0104] The road condition acquisition module 902 is used to obtain the vehicle's operating road condition parameters.

[0105] The range determination module 903 is used to determine the preset range of the corresponding power economy parameter according to the operating road condition parameter.

[0106] The total transmission ratio determination module 904 is used to obtain the preset vehicle speed and the economic speed range of the alternative powertrain, and determine the economic range of the total transmission ratio corresponding to the alternative powertrain based on the economic speed range, the preset vehicle speed, and the wheel radius.

[0107] The torque determination module 905 is configured to determine an economic range of the engine torque of the alternative powertrain according to the economic range of the total transmission ratio of the alternative powertrain, a preset range of the power economy parameter, and configuration parameters of the vehicle.

[0108] The powertrain matching module 906 is configured to select an alternative powertrain having an economic speed within an economic speed range and an engine torque within an economic range of engine torque as a matching powertrain.

[0109] For the specific definition of the vehicle powertrain matching device, please refer to the definition of the vehicle powertrain matching method above, which will not be repeated here. The various modules in the above-mentioned vehicle powertrain matching device can be implemented in whole or in part by software, hardware and their combination. The above-mentioned modules can be embedded in or independent of the processor in the computer device in the form of hardware, or can be stored in the memory of the computer device in the form of software, so that the processor can call and execute the operations corresponding to the above modules. It should be noted that the division of modules in the embodiment of the present application is schematic and is only a logical function division. There may be other division methods in actual implementation.

[0110] In one embodiment, a computer device is provided, wherein the internal structure of the computer device can be as follows: Figure 4 As shown. The computer device includes a processor, a memory, and a network interface connected via a system bus. The processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program, and a database. The internal memory provides an environment for the operation of the operating system and computer program in the non-volatile storage medium. The network interface of the computer device is used to communicate with an external terminal via a network connection. When the computer program is executed by the processor, it implements a vehicle powertrain matching method.

[0111] Those skilled in the art will understand that Figure 4 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than shown in the figure, or combine certain components, or have a different component arrangement.

[0112] In one embodiment, a computer device is provided, including a memory and a processor. The memory stores a computer program, and the processor implements the steps in the above method embodiments when executing the computer program.

[0113] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the steps in the above-mentioned method embodiments are implemented.

[0114] Those skilled in the art will appreciate that all or part of the processes in the above-mentioned embodiment methods can be implemented by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in this application may include at least one of non-volatile and volatile memory. Non-volatile memory may include read-only memory (ROM), magnetic tape, floppy disk, flash memory or optical memory, etc. Volatile memory may include random access memory (RAM) or external cache memory. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM).

[0115] Throughout this specification, references to terms such as "some embodiments," "other embodiments," and "desired embodiments" indicate that a particular feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. Although these terms are used interchangeably throughout this specification, they do not necessarily refer to the same embodiment or example.

[0116] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0117] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art could make various modifications and improvements without departing from the spirit of the present application, all of which fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A vehicle powertrain matching method, wherein the powertrain includes an engine and a gearbox, characterized in that: The method comprises: Acquiring configuration parameters of the vehicle, wherein the configuration parameters include a wheel radius of the vehicle; Obtaining vehicle operating road condition parameters; the operating road condition parameters include road type and slope type; Determining a preset range of a corresponding power economy parameter according to the operating road condition parameter; the preset range of the power economy parameter corresponding to different operating road condition parameters is different; Obtaining a preset vehicle speed and an economic speed range of an alternative powertrain, and determining an economic range of a total transmission ratio corresponding to the alternative powertrain based on the economic speed range, the preset vehicle speed, and the wheel radius; determining an economic range of the engine torque of the alternative powertrain according to the economic range of the total transmission ratio of the alternative powertrain, the preset range of the power economy parameter, and the configuration parameters of the vehicle; selecting an alternative powertrain whose economic speed is within the economic speed range and whose corresponding engine torque is also within the economic range of the engine torque as a matching powertrain; The power economy parameter, the economic range of the total transmission ratio corresponding to the alternative powertrain, and the economic range of the engine torque of the alternative powertrain are determined by the following formulas respectively: Among them, Q H is the power economy parameter, T is the engine torque, i g is the rear axle speed ratio, i0 is the highest gear ratio of the gearbox, i g i0 is the total transmission ratio, η is the transmission efficiency, f is the rolling resistance, r is the wheel radius, M is the total vehicle mass, g is the acceleration due to gravity; V is the preset vehicle speed, and n is the economic speed.

2. The method according to claim 1, characterized in that The alternative powertrain selected as a matching powertrain includes: Among the alternative powertrains whose economic speed is within the economic speed range and whose corresponding engine torque is also within the economic range of the engine torque, the alternative powertrain with the largest power economy parameter is selected as the matching powertrain.

3. The method according to claim 1, characterized in that The types of roads include expressways and non-expressways; The slope types include flat roads, hills, and mountain roads; the flat roads are roads in which the slope length accounts for less than 5% of the total road length, the hills are roads in which the slope length accounts for greater than or equal to 5% and less than or equal to 30% of the total road length, and the mountain roads are roads in which the slope length accounts for more than 30% of the total road length.

4. The method according to claim 3, characterized in that Determining the preset range of the corresponding power economy parameter according to the operating road condition parameter includes: If the road type is an expressway and the slope type is a flat road, the power economy parameter is greater than a first high-speed threshold and less than or equal to a second high-speed threshold; If the road type is an expressway and the slope type is a hilly area, the power economy parameter is greater than a second high-speed threshold and less than or equal to a third high-speed threshold; If the road type is an expressway and the slope type is a mountain road, the power economy parameter is greater than a third high-speed threshold; If the highway type is a non-highway and the slope type is a flat road, the power economy parameter is greater than a first non-highway threshold and less than or equal to a second non-highway threshold; If the road type is a non-highway and the slope type is a hill, the power economy parameter is greater than a second non-highway threshold and less than or equal to a third non-highway threshold; If the road type is a non-highway road and the slope type is a mountain road, the power economy parameter is greater than a third non-highway threshold.

5. A vehicle powertrain matching device, characterized in that: The device comprises: A configuration acquisition module, configured to acquire configuration parameters of the vehicle, wherein the configuration parameters include the wheel radius of the vehicle; A road condition acquisition module is used to obtain the vehicle's operating road condition parameters; the operating road condition parameters include road type and slope type; A range determination module, configured to determine a preset range of a corresponding power economy parameter according to the operating road condition parameter; the preset range of the power economy parameter corresponding to different operating road condition parameters is different; a total transmission ratio determination module, configured to obtain a preset vehicle speed and an economic speed range of an alternative powertrain, and determine an economic speed range of a total transmission ratio corresponding to the alternative powertrain based on the economic speed range, the preset vehicle speed, and the wheel radius; a torque determination module, configured to determine an economic range of the engine torque of the alternative powertrain according to the economic range of the total transmission ratio of the alternative powertrain, the preset range of the power economy parameter, and the configuration parameters of the vehicle; an assembly matching module, configured to select, as a matching powertrain, an alternative powertrain having an economic speed within the economic speed range and a corresponding engine torque within the economic range of the engine torque; The range determination module is further configured to determine the power economy parameter using the following formula: The total transmission ratio determination module is further configured to determine an economic range of the total transmission ratio corresponding to the candidate powertrain using the following formula: The torque determination module is further configured to determine an economic range of the engine torque of the alternative powertrain using the following formula: Among them, Q H is the power economy parameter, T is the engine torque, i g is the rear axle speed ratio, i0 is the highest gear ratio of the gearbox, i g i0 is the total transmission ratio, η is the transmission efficiency, f is the rolling resistance, r is the wheel radius, M is the total vehicle mass, g is the acceleration due to gravity; V is the preset vehicle speed, and n is the economic speed.

6. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 4 are implemented.

7. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 4 are implemented.

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