CN117329014A - Engine torque control method and device, controller and vehicle - Google Patents
Engine torque control method and device, controller and vehicle Download PDFInfo
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- CN117329014A CN117329014A CN202311353578.0A CN202311353578A CN117329014A CN 117329014 A CN117329014 A CN 117329014A CN 202311353578 A CN202311353578 A CN 202311353578A CN 117329014 A CN117329014 A CN 117329014A
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- 238000000034 method Methods 0.000 title claims abstract description 42
- 230000006872 improvement Effects 0.000 claims abstract description 28
- 238000004590 computer program Methods 0.000 claims description 20
- 238000012544 monitoring process Methods 0.000 claims description 4
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 230000006870 function Effects 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 238000012545 processing Methods 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
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- 238000005859 coupling reaction Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000003491 array Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D45/00—Electrical control not provided for in groups F02D41/00 - F02D43/00
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/10—Parameters related to the engine output, e.g. engine torque or engine speed
- F02D2200/1002—Output torque
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/60—Input parameters for engine control said parameters being related to the driver demands or status
- F02D2200/602—Pedal position
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Hybrid Electric Vehicles (AREA)
Abstract
The invention is suitable for the technical field of vehicles, and provides an engine torque control method, an engine torque control device, a controller and a vehicle. The method comprises the following steps: when the engine start of the hybrid vehicle is detected, acquiring an operation mode of the engine; when the running mode of the engine is a parallel driving mode, the current accelerator pedal opening of the hybrid vehicle is obtained, wherein the parallel driving mode is a driving mode in which the engine and the motor are connected in parallel; determining the torque improvement of the engine according to the opening degree of an accelerator pedal; the output torque of the engine is increased based on the torque increase amount. The invention can solve the problems of low system efficiency and high energy consumption caused by longer connection time of the engine and the motor in the engine torque lifting stage of the hybrid vehicle.
Description
Technical Field
The invention belongs to the technical field of vehicles, and particularly relates to an engine torque control method, an engine torque control device, a controller and a vehicle.
Background
When the engine of the vehicle is started, the required torque is calculated according to the position of an accelerator pedal, the cooling water temperature, the rotating speed and the like, and then the oil injection requirement is calculated, so that the engine is controlled to start.
After the engine is started, there is a torque up process. For a hybrid vehicle capable of being directly driven, when the hybrid vehicle is switched to be directly driven by an engine, the torque of the engine can replace the torque of a motor to drive wheels, and the motor boosting is required to ensure the power performance and smoothness in the torque lifting stage after the engine is started, namely, the two power sources simultaneously provide the torque. However, in the torque boost stage after the engine is started, the two power sources are connected for a long time, so that the torque utilization rate of the engine is low, the system efficiency is low, and the energy consumption is high.
Disclosure of Invention
In view of the above, the embodiments of the present invention provide an engine torque control method, an apparatus, a controller, and a vehicle, so as to solve the problems of low system efficiency and high energy consumption caused by a long time between an engine and a motor in an engine torque lifting stage of a hybrid vehicle.
A first aspect of an embodiment of the present invention provides an engine torque control method, including:
when the engine start of the hybrid vehicle is detected, acquiring an operation mode of the engine;
when the running mode of the engine is a parallel driving mode, the current accelerator pedal opening of the hybrid vehicle is obtained, wherein the parallel driving mode is a driving mode in which the engine and the motor are connected in parallel;
determining the torque improvement of the engine according to the opening degree of an accelerator pedal;
the output torque of the engine is increased based on the torque increase amount.
With reference to the first aspect, in one possible implementation manner of the first aspect, determining the torque improvement amount of the engine according to the accelerator pedal opening includes:
comparing the opening of the accelerator pedal with a preset threshold value;
if the opening of the accelerator pedal is larger than a preset threshold value, determining a torque increasing amount according to the opening of the accelerator pedal, wherein the torque increasing amount is in direct proportion to the opening of the accelerator pedal.
With reference to the first aspect, in a possible implementation manner of the first aspect, after increasing the output torque of the engine based on the torque increase amount, the method further includes:
monitoring the required torque of the hybrid vehicle and the output torque of the engine in real time;
obtaining a target output torque of a motor of the hybrid vehicle based on a difference between the output torque of the engine and a required torque of the hybrid vehicle;
and controlling the motor to run based on the target output torque until the output torque of the engine is equal to the required torque of the hybrid vehicle, and controlling the motor to be closed.
With reference to the first aspect, in a possible implementation manner of the first aspect, the method further includes:
acquiring the operation time length of a motor after the engine is started in a parallel driving mode every time in a preset time period, and determining the number of times of the operation time length which is greater than a preset time length threshold value in the operation time length in the preset time period;
judging whether the ratio of the times to the total times of starting the engine in the parallel driving mode in a preset time period is larger than a preset ratio threshold value or not;
if the ratio is greater than the ratio threshold, the torque increase is increased so that the operating duration of the motor after the engine is started in the parallel drive mode is less than or equal to the duration threshold.
With reference to the first aspect, in a possible implementation manner of the first aspect, after comparing the accelerator pedal opening with a preset threshold value, the method further includes:
and if the opening degree of the accelerator pedal is smaller than or equal to a preset threshold value, keeping the output torque of the engine unchanged.
With reference to the first aspect, in one possible implementation manner of the first aspect, determining the torque improvement amount of the engine according to the accelerator pedal opening includes:
acquiring a preset reference table, wherein the reference table comprises torque improvement amounts corresponding to different accelerator pedal opening ranges;
and determining the torque improvement corresponding to the opening degree of the accelerator pedal according to the reference table.
A second aspect of an embodiment of the present invention provides an engine torque control device including:
the mode acquisition module is used for acquiring an operation mode of the engine when the engine of the hybrid vehicle is detected to be started;
the opening acquisition module is used for acquiring the current accelerator pedal opening of the hybrid vehicle when the running mode of the engine is a parallel driving mode, wherein the parallel driving mode is a driving mode in which the engine and the motor are connected in parallel;
the improvement amount determining module is used for determining the torque improvement amount of the engine according to the opening degree of the accelerator pedal;
the torque adjustment module is used for improving the output torque of the engine based on the torque improvement amount.
A third aspect of an embodiment of the present invention provides a controller comprising a memory, a processor and a computer program stored in the memory and executable on the processor, the processor executing the computer program to perform the steps of the engine torque control method as in the first aspect or any implementation of the first aspect.
A fourth aspect of an embodiment of the invention provides a vehicle comprising a controller as in the third aspect.
A fifth aspect of an embodiment of the present invention provides a computer readable storage medium storing a computer program which when executed by a processor performs the steps of the engine torque control method as in the first aspect or any implementation manner of the first aspect.
Compared with the prior art, the embodiment of the invention has the beneficial effects that:
in the embodiment of the invention, when the engine of the hybrid vehicle is started in the parallel driving mode, the engine and the motor are simultaneously driven in the torque lifting stage, and the torque output by the engine cannot be converted into electric energy for storage at the moment, so that the low utilization rate of the engine torque is easily caused. Therefore, in the torque lifting stage, when the engine and the motor are driven simultaneously, the output torque of the engine is increased, so that the engine torque can be lifted faster, the power connection time of the engine and the motor is shortened, and the energy waste is reduced. In addition, according to the opening degree of the accelerator pedal, the output torque of the engine is improved, so that the torque of the engine is improved to correspond to the requirements of the vehicle, and the actual application requirements are met.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of an implementation flow of an engine torque control method provided by an embodiment of the present invention;
FIG. 2 is a schematic diagram of torque variation during a torque boost phase according to an embodiment of the present invention;
FIG. 3 is a second torque variation diagram of the torque boost stage according to the present invention;
FIG. 4 is a schematic diagram of an engine torque control device according to an embodiment of the present disclosure;
fig. 5 is a schematic structural diagram of a controller according to an embodiment of the present invention.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth such as the particular system architecture, techniques, etc., in order to provide a thorough understanding of the embodiments of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.
In order to illustrate the technical scheme of the invention, the following description is made by specific examples.
An embodiment of the invention provides an engine torque control method, which can be used as a program to write a separate controller to be installed on a vehicle, and can also be integrated into a body area controller of the vehicle to realize the control of engine torque.
In the related art, torque is a special moment for rotating an object. The torque of the engine refers to the torque output from the crankshaft end of the engine. Under the condition of fixed power, it has inverse relation with engine rotation speed, the faster the rotation speed, the smaller the torque, and conversely, the larger the torque, it reflects the load capacity of the automobile in a certain range. After the engine is started, a torque lifting process is carried out, and for the hybrid vehicle capable of being directly driven, in the torque lifting stage, the motor can output certain torque to ensure the dynamic property and smoothness of the vehicle. At present, the power connection time of an engine and a motor is too long, and the problems of low utilization rate of engine torque and low system efficiency exist.
Therefore, when the engine of the vehicle is started, if the running mode of the engine is a parallel driving mode, the current accelerator pedal opening of the vehicle is obtained, and the torque improvement amount of the engine is determined based on the accelerator pedal opening, and then the output torque of the engine is improved through the torque improvement amount, so that the engine torque can be improved more quickly, the power connection time of the engine and the motor is shortened, the energy waste is reduced, and the output torque of the engine is improved according to the accelerator pedal opening, so that the torque improvement of the engine corresponds to the requirement of the vehicle.
Optionally, an embodiment of the present invention provides an engine torque control method, referring to fig. 1, the method includes:
in step S101, when an engine start of the hybrid vehicle is detected, an operation mode of the engine is acquired.
In the related art, the operation modes of the engine include a series power generation mode, a parallel drive mode, and the like. In the parallel driving mode, namely in the driving mode that the engine and the motor are connected in parallel, in the torque lifting stage after the engine is started, the engine and the motor are connected with power sources, the two power sources output torque simultaneously, the torque of the engine cannot be fully utilized and cannot be converted into electric energy, and meanwhile, the motor also needs to continuously output, so that the system efficiency is low. And the longer the power source is connected, the higher the energy consumption of the system is, and the more unfavorable the effective utilization of energy is. Therefore, the scheme processes the parallel driving mode, and solves the problems of low system efficiency and high energy consumption caused by long connection time of the engine and the motor in the mode.
Step S102, when the running mode of the engine is the parallel driving mode, the current accelerator pedal opening of the hybrid vehicle is obtained.
Here, the current accelerator pedal opening of the hybrid vehicle may be detected by an accelerator pedal position sensor. The accelerator pedal position sensor converts the amount (angle) of pedal depression into a voltage signal, so that the present embodiment determines the actual accelerator pedal opening angle based on the signal converted by the accelerator pedal position sensor. The working principle is as follows: the working voltage of the accelerator pedal position sensor, such as 5V voltage, is supplied to the embodiment, and the sensor feeds back two voltage signals reflecting the position of the accelerator pedal, so that the embodiment can perform starting control according to the signals. Alternatively, the accelerator pedal position sensor is of two types: linear type and hall element type.
Step S103, determining the torque improvement amount of the engine according to the opening degree of the accelerator pedal, and improving the output torque of the engine based on the torque improvement amount.
Wherein the torque increase amount of the output torque of the engine needs to be determined by the accelerator pedal opening.
As a possible implementation manner, the output torque of the engine defaults to a preset value, and the embodiment may compare the accelerator pedal opening with a preset threshold value;
if the opening of the accelerator pedal is smaller than or equal to a preset threshold value, keeping the output torque of the engine unchanged as a preset value;
if the opening of the accelerator pedal is larger than a preset threshold value, determining a torque increasing amount according to the opening of the accelerator pedal, and increasing the output torque of the engine according to the increasing amount; wherein, the opening degree of the accelerator pedal is in direct proportion to the torque increasing amount of the output torque.
It can be understood that the larger the opening of the accelerator pedal is, the larger the required torque of the vehicle is, and the higher the improvement of the output torque of the engine is; the small opening of the accelerator pedal does not require very high engine output torque, so that torque fluctuation can be avoided. For example, the preset threshold may be determined according to practical situations, for example, if the preset threshold is set to 30%, and when the accelerator pedal opening is less than or equal to 30%, the engine output torque is not increased.
In the present embodiment, when the engine of the hybrid vehicle is started in the parallel drive mode, the engine and the motor are simultaneously driven in the torque boost stage thereof, and the torque output from the engine cannot be converted into electric energy for storage, thus easily causing low engine torque utilization. According to the embodiment, the current accelerator pedal opening of the hybrid vehicle is obtained, and the output torque of the engine is properly improved according to the accelerator pedal opening, so that the engine torque can be more quickly improved, the power connection time of the engine and the motor can be shortened, and the energy waste is reduced.
Fig. 2 shows the torque relationship between the engine and the motor without increasing the output torque of the engine, and it can be seen that when the output torque of the engine is not increased, the output torque of the engine needs a longer time to reach the required torque, and the motor needs to assist for a longer time. Fig. 3 shows the torque relationship between the engine and the motor in the case of increasing the output torque of the engine according to the present embodiment, it can be seen that the torque increasing stage of the engine is significantly shortened, the torque of the engine can reach the required torque faster, and accordingly, the power assisting time of the motor is also shortened, the power source connecting time is reduced, and the energy waste is reduced.
In some embodiments, determining the torque increase amount of the engine according to the accelerator pedal opening in step S103 includes:
acquiring a preset reference table, wherein the reference table comprises torque improvement amounts corresponding to different accelerator pedal opening ranges;
and determining the torque improvement corresponding to the opening degree of the accelerator pedal according to the reference table.
Here, the inventors have made continuous studies to determine a map between the accelerator pedal opening and the torque increase amount, and have established a reference table in advance, the reference table containing torque increase amounts corresponding to different accelerator pedal opening ranges, for example, the accelerator pedal opening range is 40% to 50%, the corresponding torque increase amount is a, the accelerator pedal opening range is 50% to 60%, the corresponding torque increase amount is b, and the like, wherein b is greater than a, and the greater the accelerator pedal opening, the greater the torque increase amount.
In this way, when the torque increase amount corresponding to the accelerator pedal opening needs to be determined later, the torque increase amount of the transmitter output corresponding to the accelerator pedal opening can be determined directly by the above reference table, and the increase amount of the transmitter output torque corresponding to the accelerator pedal opening can be accurately and rapidly obtained. It should be noted that there is an upper limit to the amount of increase in the output torque of the transmitter, and when the accelerator pedal opening is greater than a certain threshold, the amount of increase in the output torque of the transmitter is no longer changed, where the threshold may be set according to actual situations, such as determination based on the accelerator pedal opening corresponding to the maximum value of the output torque of the transmitter.
The torque increase amount may be calculated by using a relation curve between the accelerator pedal opening and the torque increase amount, and the present invention is not limited to this.
In some embodiments, after increasing the output torque of the engine based on the torque increase amount in step S103 described above, the method further includes:
monitoring the required torque of the hybrid vehicle and the output torque of the engine in real time;
obtaining a target output torque of a motor of the hybrid vehicle based on a difference between the output torque of the engine and a required torque of the hybrid vehicle;
and controlling the motor to run based on the target output torque until the output torque of the engine is equal to the required torque of the hybrid vehicle, and controlling the motor to be closed.
In the present embodiment, as shown in fig. 2 and 3, after the output torque of the engine is increased, the torque output by the engine is continuously increased but the required torque cannot be reached quickly, so that the power assist is performed by the motor during the torque increasing stage of the engine, and the dynamic property and balance of the vehicle are ensured. As the torque output by the engine gradually reaches the required torque, the torque output by the motor gradually decreases to 0, and the motor is turned off. After the motor is turned off, the output torque of the engine can be restored to the value before the increase.
In some embodiments, the engine torque control method further comprises:
acquiring the operation time length of a motor after the engine is started in a parallel driving mode every time in a preset time period, and determining the times of the operation time length which is greater than a preset time length threshold value in the operation time length in the preset time period;
judging whether the ratio of the times to the total times of starting the engine in the parallel driving mode in a preset time period is larger than a preset ratio threshold value or not;
if the ratio is greater than the ratio threshold, the torque increase is increased so that the operating duration of the motor after the engine is started in the parallel drive mode is less than or equal to the duration threshold.
In the present embodiment, the increase update logic may be set in consideration of the fact that the torque increase rate of the engine may be slow as the engine or other components in the automobile age, or other factors such as temperature. That is, the ratio of the number of times of the operation duration greater than the duration threshold to the number of times of starting the engine in the parallel driving mode in the preset time period is greater than the preset ratio threshold, for example, the ratio threshold is 50%, which indicates that the power lifting phase of the engine is longer according to the current reference table, and the torque lifting amount needs to be increased if the power lifting phase cannot meet the requirements in most cases, thereby further shortening the power lifting phase.
For example, if the torque increase amount of the engine is calculated according to the above-mentioned preset reference table, the torque increase amount corresponding to each accelerator pedal opening range in the reference table may be increased by a certain value.
It should be understood that the sequence number of each step in the foregoing embodiment does not mean that the execution sequence of each process should be determined by the function and the internal logic, and should not limit the implementation process of the embodiment of the present invention.
Fig. 4 is a schematic structural diagram of an engine torque control device according to an embodiment of the present invention, and referring to fig. 4, the device 40 includes:
a mode acquisition module 41 for acquiring an operation mode of the engine when an engine start of the hybrid vehicle is detected;
the opening obtaining module 42 is configured to obtain a current accelerator pedal opening of the hybrid vehicle when an operation mode of the engine is a parallel driving mode, where the parallel driving mode is a driving mode in which the engine and the motor are connected in parallel;
an increase amount determination module 43 for determining a torque increase amount of the engine based on the accelerator pedal opening;
the torque adjustment module 44 is configured to increase the output torque of the engine based on the torque increase amount.
As one possible implementation, the improvement amount determining module 43 is specifically configured to:
comparing the opening of the accelerator pedal with a preset threshold value;
if the opening of the accelerator pedal is larger than a preset threshold value, determining a torque increasing amount according to the opening of the accelerator pedal, wherein the torque increasing amount is in direct proportion to the opening of the accelerator pedal.
As one possible implementation, after increasing the output torque of the engine based on the torque increase amount, the torque adjustment module 44 is further configured to:
monitoring the required torque of the hybrid vehicle and the output torque of the engine in real time;
obtaining a target output torque of a motor of the hybrid vehicle based on a difference between the output torque of the engine and a required torque of the hybrid vehicle;
and controlling the motor to run based on the target output torque until the output torque of the engine is equal to the required torque of the hybrid vehicle, and controlling the motor to be closed.
As a possible implementation, the boost amount determination module 43 is further configured to:
acquiring the operation time length of a motor after the engine is started in a parallel driving mode every time in a preset time period, and determining the number of times of the operation time length which is greater than a preset time length threshold value in the operation time length in the preset time period;
judging whether the ratio of the times to the total times of starting the engine in the parallel driving mode in a preset time period is larger than a preset ratio threshold value or not;
if the ratio is greater than the ratio threshold, the torque increase is increased so that the operating duration of the motor after the engine is started in the parallel drive mode is less than or equal to the duration threshold.
As one possible implementation, after comparing the accelerator pedal opening with the preset threshold, the improvement amount determining module 43 is further configured to:
and if the opening degree of the accelerator pedal is smaller than or equal to a preset threshold value, keeping the output torque of the engine unchanged.
As one possible implementation, the improvement amount determining module 43 is specifically configured to:
acquiring a preset reference table, wherein the reference table comprises torque improvement amounts corresponding to different accelerator pedal opening ranges;
and determining the torque improvement corresponding to the opening degree of the accelerator pedal according to the reference table.
Fig. 5 is a schematic diagram of a controller 50 according to an embodiment of the present invention. As shown in fig. 5, the controller 50 of this embodiment includes: a processor 51, a memory 52, and a computer program 53, such as an engine torque control program, stored in the memory 52 and executable on the processor 51. The processor 51, when executing the computer program 53, implements the steps of the various engine torque control method embodiments described above, such as steps S101 to S103 shown in fig. 1. Alternatively, the processor 51, when executing the computer program 53, implements the functions of the modules in the above-described device embodiments, such as the functions of the modules 41 to 43 shown in fig. 4.
By way of example, the computer program 53 may be divided into one or more modules/units, which are stored in the memory 52 and executed by the processor 51 to complete the present invention. One or more of the modules/units may be a series of computer program instruction segments capable of performing specific functions for describing the execution of the computer program 53 in the controller 50.
The controller 50 may include, but is not limited to, a processor 51, a memory 52. It will be appreciated by those skilled in the art that fig. 5 is merely an example of the controller 50 and is not intended to limit the controller 50, and may include more or fewer components than shown, or may combine certain components, or different components, e.g., the controller 50 may further include input-output devices, network access devices, buses, etc.
The processor 51 may be a central processing unit (Central Processing Unit, CPU), but may also be other general purpose processors, digital signal processors (Digital Signal Processor, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC), off-the-shelf programmable gate arrays (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory 52 may be an internal storage unit of the controller 50, such as a hard disk or a memory of the controller 50. The memory 52 may also be an external storage device of the controller 50, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card) or the like, which are provided on the controller 50. Further, the memory 52 may also include both internal storage units and external storage devices of the controller 50. The memory 52 is used to store computer programs and other programs and data required by the controller 50. The memory 52 may also be used to temporarily store data that has been output or is to be output.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-described division of the functional units and modules is illustrated, and in practical application, the above-described functional distribution may be performed by different functional units and modules according to needs, i.e. the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-described functions. The functional units and modules in the embodiment may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit, where the integrated units may be implemented in a form of hardware or a form of a software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working process of the units and modules in the above system may refer to the corresponding process in the foregoing method embodiment, which is not described herein again.
An embodiment of the present invention also provides a vehicle including a controller as described above.
In the foregoing embodiments, the descriptions of the embodiments are emphasized, and in part, not described or illustrated in any particular embodiment, reference is made to the related descriptions of other embodiments.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus/controller and method may be implemented in other manners. For example, the apparatus/controller embodiments described above are merely illustrative, e.g., the division of modules or units is merely a logical functional division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection via interfaces, devices or units, which may be in electrical, mechanical or other forms.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed over a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in the embodiments of the present invention may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The integrated modules/units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the present invention may implement all or part of the flow of the method of the above embodiment, or may be implemented by a computer program to instruct related hardware, and the computer program may be stored in a computer readable storage medium, where the computer program, when executed by a processor, may implement the steps of each of the method embodiments described above. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, executable files or in some intermediate form, etc. The computer readable medium may include: any entity or device capable of carrying computer program code, a recording medium, a U disk, a removable hard disk, a magnetic disk, an optical disk, a computer Memory, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), an electrical carrier signal, a telecommunications signal, a software distribution medium, and so forth. It should be noted that the content of the computer readable medium can be appropriately increased or decreased according to the requirements of the jurisdiction's jurisdiction and the patent practice, for example, in some jurisdictions, the computer readable medium does not include electrical carrier signals and telecommunication signals according to the jurisdiction and the patent practice.
The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention, and are intended to be included in the scope of the present invention.
Claims (10)
1. An engine torque control method, comprising:
when the starting of an engine of the hybrid vehicle is detected, acquiring an operation mode of the engine;
when the running mode of the engine is a parallel driving mode, the current accelerator pedal opening of the hybrid vehicle is obtained, wherein the parallel driving mode is a driving mode in which the engine and the motor are connected in parallel;
determining the torque improvement of the engine according to the opening degree of the accelerator pedal;
and increasing the output torque of the engine based on the torque increase amount.
2. The engine torque control method according to claim 1, characterized in that the determining the torque increase amount of the engine according to the accelerator pedal opening degree includes:
comparing the opening of the accelerator pedal with a preset threshold value;
and if the opening of the accelerator pedal is larger than the preset threshold, determining the torque increasing amount according to the opening of the accelerator pedal, wherein the torque increasing amount is in direct proportion to the opening of the accelerator pedal.
3. The engine torque control method according to claim 1 or 2, characterized in that after increasing the output torque of the engine based on the torque increase amount, the method further comprises:
monitoring the required torque of the hybrid vehicle and the output torque of the engine in real time;
obtaining a target output torque of a motor of the hybrid vehicle based on a difference between the output torque of the engine and a required torque of the hybrid vehicle;
and controlling the motor to run based on the target output torque until the output torque of the engine is equal to the required torque of the hybrid vehicle, and controlling the motor to be closed.
4. The engine torque control method according to claim 1 or 2, characterized in that the method further comprises:
acquiring the operation time length of a motor after the engine is started in the parallel driving mode every time in a preset time period, and determining the starting times meeting the condition that the operation time length is greater than a preset time length threshold value in the preset time period;
judging whether the ratio of the times to the total times of starting the engine in the parallel driving mode in the preset time period is larger than a preset ratio threshold;
and if the ratio is greater than the ratio threshold, increasing the torque increasing amount so that the operation duration of the motor after the engine is started in the parallel driving mode is less than or equal to the duration threshold.
5. The engine torque control method according to claim 2, characterized by further comprising, after said comparing said accelerator pedal opening with a preset threshold:
and if the opening degree of the accelerator pedal is smaller than or equal to the preset threshold value, keeping the output torque of the engine unchanged.
6. The engine torque control method according to claim 2, characterized in that the determining the torque increase amount of the engine according to the accelerator pedal opening degree includes:
acquiring a preset reference table, wherein the reference table comprises torque improvement amounts corresponding to different accelerator pedal opening ranges;
and determining the torque improvement corresponding to the opening degree of the accelerator pedal according to the reference table.
7. An engine torque control device, comprising:
the system comprises a mode acquisition module, a control module and a control module, wherein the mode acquisition module is used for acquiring an operation mode of an engine of a hybrid vehicle when the engine is detected to be started;
the opening acquisition module is used for acquiring the current accelerator pedal opening of the hybrid vehicle when the running mode of the engine is a parallel driving mode, wherein the parallel driving mode is a driving mode in which the engine and the motor are connected in parallel;
the improvement amount determining module is used for determining the torque improvement amount of the engine according to the opening degree of the accelerator pedal;
and the torque adjustment module is used for improving the output torque of the engine based on the torque improvement amount.
8. A controller comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that the processor implements the steps of the method according to any one of claims 1 to 6 when the computer program is executed.
9. A vehicle comprising the controller of claim 8.
10. A computer readable storage medium storing a computer program, characterized in that the computer program when executed by a processor implements the steps of the method according to any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311353578.0A CN117329014A (en) | 2023-10-18 | 2023-10-18 | Engine torque control method and device, controller and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311353578.0A CN117329014A (en) | 2023-10-18 | 2023-10-18 | Engine torque control method and device, controller and vehicle |
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| Publication Number | Publication Date |
|---|---|
| CN117329014A true CN117329014A (en) | 2024-01-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311353578.0A Pending CN117329014A (en) | 2023-10-18 | 2023-10-18 | Engine torque control method and device, controller and vehicle |
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| Country | Link |
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| CN (1) | CN117329014A (en) |
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2023
- 2023-10-18 CN CN202311353578.0A patent/CN117329014A/en active Pending
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