CN114954417A

CN114954417A - Torque control method, device and equipment of power system and storage medium

Info

Publication number: CN114954417A
Application number: CN202210709587.8A
Authority: CN
Inventors: 肖哲; 沈玉芳; 马帅营; 陈士超; 孙昊
Original assignee: Zhejiang Remote Smart Core Technology Co ltd; Zhejiang Geely Holding Group Co Ltd; Zhejiang Remote Commercial Vehicle R&D Co Ltd
Current assignee: Zhejiang Remote Smart Core Technology Co ltd; Zhejiang Geely Holding Group Co Ltd; Zhejiang Remote Commercial Vehicle R&D Co Ltd
Priority date: 2022-06-21
Filing date: 2022-06-21
Publication date: 2022-08-30

Abstract

The invention discloses a torque control method, a device, equipment and a storage medium of a power system, wherein the method comprises the following steps: when a torque request in a hybrid power mode is received, a torque judgment value at the current moment is obtained, the torque judgment value comprises an engine to-be-executed torque and an external characteristic torque of a motor, and the engine to-be-executed torque is determined by the air intake quantity of the engine; determining whether the torque request meets a torque execution condition or not according to the torque judgment value, and if so, responding to the torque request so as to enable the engine and the motor to execute the corresponding torque request; through the mode, whether the torque request of the engine meets the requirement is judged through the to-be-executed torque of the engine, the to-be-executed torque of the engine is the real-time executable maximum torque determined by the air inflow, the power requirement of the vehicle is met, the hybrid torque control accuracy is improved, and the problem of insufficient vehicle power caused by the fact that the external characteristic torque of the engine is larger than the actual execution torque is solved.

Description

Torque control method, device, equipment and storage medium of power system

Technical Field

The invention relates to the field of hybrid vehicles, in particular to a torque control method, a torque control device, torque control equipment and a torque control storage medium of a power system.

Background

The hybrid power is an important technical path for solving the problems of fossil energy shortage, environmental pollution and greenhouse effect of automobiles and realizing a double-carbon target, and a common torque control strategy of a hybrid power assembly is that a hybrid control module analyzes and corrects torque according to a battery, external characteristic torque of an engine, vehicle speed and the like to generate a torque instruction so as to control the engine and a driving motor to respond to the corresponding torque instruction.

However, compared with the conventional vehicle, the hybrid vehicle is more frequently switched on after the engine is started in the running process, and in a period of time after the engine is started, due to the fact that the water temperature is low, the oil pressure is low, the EGR system does not reach the opening condition and the like, when the engine is corrected according to the external characteristic torque, the problems of insufficient vehicle power, poor driving feeling and the like are easily caused under the working condition. Therefore, the hybrid torque control of the conventional hybrid vehicle has a problem of low accuracy.

Disclosure of Invention

The invention mainly aims to provide a torque control method, a torque control device, torque control equipment and a torque control storage medium of a power system, and aims to solve the technical problem of low accuracy of hybrid torque control in the conventional hybrid vehicle power system.

In order to achieve the above object, the present invention provides a torque control method of a powertrain system, the torque control method of the powertrain system comprising the steps of:

when a torque request in a hybrid power mode is received, a torque determination value at the current moment is obtained, wherein the torque determination value comprises an engine to-be-executed torque and an external characteristic torque of a motor, and the engine to-be-executed torque is determined by the air intake quantity of the engine;

and determining whether the torque request meets a torque execution condition or not according to the torque judgment value, and if so, responding to the torque request to enable the engine and the motor to execute the corresponding torque request.

Preferably, the torque request comprises an engine torque request,

the step of determining whether the torque request meets a torque execution condition according to the torque determination value, and if so, responding to the torque request to allow an engine and a motor to execute the corresponding torque request comprises the following steps:

comparing the engine torque request with the engine to-be-executed torque;

and if the engine torque request is less than or equal to the torque to be executed by the engine, determining that the engine torque request meets the execution condition, and responding to the engine torque request to control the engine to execute the engine torque request.

Preferably, after the step of comparing the engine torque request and the engine to-be-executed torque, the method comprises:

if the engine torque request is larger than the torque to be executed of the engine, calculating an engine torque correction according to the torque to be executed of the engine and the external characteristic torque of the engine;

and correcting the engine torque request according to the engine torque correction amount to obtain a new engine torque request, and acquiring a torque judgment value at the current moment when receiving the torque request in the hybrid mode.

Preferably, the torque request further comprises an electric machine torque request,

the step of determining whether the torque request meets a torque execution condition according to the torque judgment value, and if so, responding to the torque request to allow an engine and a motor to execute the corresponding torque request comprises the following steps:

comparing the motor torque request with the motor external characteristic torque;

and if the motor torque request is smaller than or equal to the motor external characteristic torque, determining that the motor torque request meets an execution condition, responding to the motor torque request, and controlling the motor to execute the motor torque request.

Preferably, after the step of comparing the motor torque request and the motor external characteristic torque, the method includes:

if the motor torque request is larger than the motor external characteristic torque, calculating a motor torque correction according to the state of a motor battery;

and correcting the motor torque request according to the motor torque correction amount to obtain a new motor torque request, and acquiring a torque judgment value at the current moment when receiving the torque request in the hybrid mode.

Preferably, before the step of obtaining the torque determination value at the present time when the torque request in the hybrid mode is received, the method includes:

acquiring accelerator pedal information and gearbox shaft rotating speed information, and calculating the required torque of the whole vehicle;

and carrying out torque analysis according to the vehicle required torque, the battery data and the vehicle speed, and calculating the torque request.

Preferably, the torque to be executed by the engine is a maximum execution torque corresponding to a real-time torque within a preset time, and the maximum execution torque is dynamically updated based on a preset frequency.

Further, to achieve the above object, the present invention provides a torque control apparatus of a powertrain system, the apparatus comprising:

the acquisition module is used for acquiring a torque judgment value at the current moment when a torque request in a hybrid power mode is received, wherein the torque judgment value comprises an engine to-be-executed torque and an external characteristic torque of a motor, and the engine to-be-executed torque is determined by the air inflow of the engine;

and the response module is used for determining whether the torque request meets a torque execution condition according to the torque determination value, and if so, responding to the torque request so as to enable the engine and the motor to execute the corresponding torque request.

In addition, to achieve the above object, the present application also provides a torque control apparatus of a powertrain system, the torque control apparatus of a powertrain system including a memory, a processor and a torque control program of the powertrain system stored on the memory and executable on the processor, the torque control program of the powertrain system, when executed by the processor, implementing the steps of the torque control method of the powertrain system as described above.

Further, to achieve the above object, the present application also provides a computer readable storage medium having stored thereon a torque control program of a powertrain system, which when executed by a processor, implements the steps of the torque control method of the powertrain system as described above.

According to the torque control method, device, equipment and storage medium of the power system, when a torque request in a hybrid power mode is received, a torque judgment value at the current moment is obtained, wherein the torque judgment value comprises an engine to-be-executed torque and a motor external characteristic torque, and the engine to-be-executed torque is determined by the engine air intake amount; determining whether the torque request meets a torque execution condition or not according to the torque judgment value, and if so, responding to the torque request to allow an engine and a motor to execute corresponding torque requests; through the mode, when a torque request is received, a torque determination value is obtained, the torque determination value comprises the torque to be executed by the engine and the external characteristic torque of the motor, whether the torque request of the engine meets the requirement or not is determined through the torque to be executed by the engine, the torque request is responded when the requirement is met, the torque to be executed by the engine is the maximum torque which can be executed in real time and is determined by the air inflow, the power requirement of the vehicle is met, the control accuracy of the hybrid torque is improved, and the problem that the power of the vehicle is insufficient due to the fact that the external characteristic torque of the engine is larger than the actual execution torque is solved.

Drawings

FIG. 1 is a schematic diagram of a hybrid control system according to an embodiment of the present invention;

FIG. 2 is a schematic flow chart diagram illustrating a first embodiment of a method for torque control of the powertrain system of the present invention;

FIG. 3 is a functional block diagram of a preferred embodiment of the torque control device of the powertrain system of the present invention;

fig. 4 is a schematic structural diagram of a terminal \ device in a hardware operating environment according to an embodiment of the present invention.

The reference numbers illustrate:

the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The main solution of the embodiment of the invention is as follows:

the hybrid power is an important technical path for solving the problems of fossil energy shortage, environmental pollution and greenhouse effect of automobiles and realizing a double-carbon target, and the common torque control strategy of the hybrid power assembly is that a hybrid control module analyzes and corrects torque according to batteries, external characteristic torque of an engine, vehicle speed and the like to generate a torque instruction so as to control the engine and a driving motor to respond to the corresponding torque instruction.

Compared with the traditional vehicle, the hybrid vehicle has the advantages that the engine is switched on more frequently after the engine is started in the running process, and in a period of time after the engine is started, the water temperature is low, the engine oil pressure is low, the EGR system does not reach the opening condition and the like, when the engine is corrected according to the external characteristic torque, the actual execution torque of the engine is smaller than the torque demand corresponding to the torque instruction, so that the problems of insufficient vehicle power, poor driving feeling and the like are caused under the working condition.

The invention provides a solution, which is suitable for the field of hybrid vehicles and solves the technical problem of low accuracy of hybrid torque control of the conventional hybrid vehicle.

As shown in fig. 1, fig. 1 is a schematic view of a mixing control system according to an embodiment of the present invention, wherein the mixing control system includes: the system comprises an accelerator pedal 1, an Engine Control Module (ECM)2, a driving Motor Controller (MCU)3, a Battery Management System (BMS)4, a Hybrid Control Module (HCM)5, an engine (ICE)6, a motor (EM)7, a battery 8 and a CAN network 9.

The invention adds an engine control module on a CAN Network (Controller Area Network), calculates the torque to be executed of the engine dynamically through the maximum air input and the like, namely, CAN execute a maximum torque signal T at the current moment _capacity If the engine state does not reach the set state (such as the temperature of the engine water is low, the pressure of the engine oil is low, and the EGR system does not reach the opening condition, etc., wherein the EGR system is short for the Exhaust Gas Recirculation system), the maximum torque signal T can be executed at the current moment _capacity The Hybrid Control Module (HCM)5 passes through T when the torque is lower than the external characteristic torque of the engine _capacity The battery SOC, the vehicle speed, the accelerator and the like perform torque analysis and correction, a torque request or a torque instruction is sent to the ECM and the motor controller MCU, and the driving motor makes up the deficiency of the torque of the engine to meet the torque requirement of the whole vehicle, so that the overall dynamic property of the vehicle is improved.

In the embodiment, the torque to be executed of the engine is only added to the CAN communication matrix, the corresponding control software is slightly changed, the optimization target of the torque control strategy of the hybrid vehicle power system CAN be achieved without changing hardware, and the accuracy of the torque control of the power system is improved on the basis of not increasing the cost. The calibration workload of the hybrid mode engine starting torque response is reduced, the calibration period and cost of the hybrid vehicle are shortened, and the problem of insufficient hybrid mode engine starting torque response is solved.

Referring to fig. 2, fig. 2 is a first embodiment of a torque control method, apparatus, device and storage medium of a powertrain system according to the present invention, and provides a torque control method of a powertrain system, which is implemented based on an operation process of the torque control method of the powertrain system, and is applied to a hybrid control module, where the torque control method of the powertrain system includes:

step S10, when a torque request in a hybrid power mode is received, a torque determination value at the current moment is obtained, wherein the torque determination value comprises an engine to-be-executed torque and an external characteristic torque of a motor, and the engine to-be-executed torque is determined by the air intake quantity of the engine;

and step S20, determining whether the torque request meets the torque execution condition according to the torque judgment value, if so, responding to the torque request to enable the engine and the motor to execute the corresponding torque request.

In this embodiment, it should be noted that, in the application scenario of the present invention, after the engine of the hybrid electric vehicle is started, because the accuracy of hybrid torque control of the hybrid electric vehicle is low, the engine torque does not meet the requirement, and therefore, the problems of insufficient vehicle power, poor driving feeling, and the like are generated. Specifically, when a torque request is received, a torque determination value is obtained, the torque determination value comprises engine to-be-executed torque and motor external characteristic torque, whether the torque request of the engine meets the requirement or not is determined through the engine to-be-executed torque, the torque request is responded when the requirement is met, and as the engine to-be-executed torque is real-time executable maximum torque determined by air inflow and meets the vehicle power requirement, the hybrid torque control accuracy is improved, and the problem that the vehicle power is insufficient due to the fact that the engine external characteristic torque is larger than the actual execution torque is solved.

The method comprises the following specific steps:

the hybrid mode is a mode in which the hybrid system of the hybrid vehicle is powered by both the engine and the drive motor.

In the present embodiment, when a torque request in the hybrid mode is received, it is necessary to acquire a torque determination value at the present time to determine the torque request and determine whether to execute the torque request. The torque determination value comprises engine to-be-executed torque and motor external characteristic torque, wherein the engine to-be-executed torque is determined by engine air inflow based on a preset calculation model, specifically, the current maximum air inflow of the engine is calculated according to key parameter values of water temperature, oil pressure and the like of the engine and the air inflow calculation model, the maximum air inflow is input into the preset calculation model, the engine to-be-executed torque is calculated, the air inflow calculation model and the preset calculation model can be obtained from engine control software or programs set by an engine developer, and the maximum air inflow and the engine to-be-executed torque obtained through the two models belong to calibrated values. Since there is a lag or deviation between the time when the parameters are obtained for calculating the torque and the time when the torque is actually executed in practical applications, the maximum intake air amount and the engine torque to be executed are acceptable range values.

It CAN be understood that the engine control module calculates real-time engine to-be-executed torque through the maximum air inflow of the engine, and sends the real-time engine to-be-executed torque to the hybrid control module through the CAN network, and the engine to-be-executed torque is sent to a torque request judgment threshold value of the engine control module as the hybrid control module so that the torque request response of the engine CAN be judged by the torque control system. The real-time execution torques obtained through real-time calculation are multiple in the preset time, the torque corresponding to the maximum value in the multiple real-time execution torques is selected to be the torque to be executed by the engine, and the torque to be executed by the engine is close to the actual executable torque of the engine, so that the problem of insufficient power of a vehicle is solved.

Further, the torque to be executed by the engine is a maximum execution torque corresponding to a real-time torque within a preset time, and the maximum execution torque is dynamically updated based on a preset frequency. It can be understood that the update time of the torque to be executed by the engine is adjusted according to the response requirement of the hybrid system to the engine, and the higher the response requirement of the hybrid system to the engine is, the shorter the update time of the torque to be executed by the engine is. The engine to-be-executed torque is calculated by the engine air inflow and a preset calculation model, so that the engine air inflow is the maximum air inflow obtained within the updating time, the obtaining time of the engine air inflow is consistent with the updating time of the engine to-be-executed torque, and the engine to-be-executed torque are dynamically updated.

Further, the external motor characteristic torque is a fixed value, which is set at the time of factory manufacture in accordance with each performance specification of the motor. Determining whether the torque request of the electric machine meets a vehicle power demand based on the off-machine characteristic torque may be performed in response.

Further, the method, before acquiring the torque determination value at the present time when receiving the torque request in the hybrid mode, includes the steps of:

step A1, acquiring accelerator pedal information and gearbox shaft rotation speed information, and calculating the required torque of the whole vehicle;

and A2, carrying out torque analysis according to the vehicle required torque, the battery data and the vehicle speed, and calculating the torque request.

In the embodiment, the opening information of an accelerator pedal and the information of the first-shaft rotating speed of the gearbox are obtained, the required torque of the whole vehicle is calculated based on the information, and the hybrid control module calculates the required torque of the whole vehicle according to the SOC data and the T of the battery _capacity And analyzing the torque of the vehicle speed, the required torque of the whole vehicle and the like to obtain a torque request.

The torque request comprises an engine torque request and a motor torque request, the engine torque request and the motor torque request are respectively sent to the engine and the motor, and hybrid power work of the vehicle is realized by the engine executing the engine torque request and the motor executing the motor torque request.

In the embodiment, whether the engine torque request and the motor torque request meet the torque execution condition is determined according to the torque determination value, if yes, the engine and the motor are controlled to respectively execute the engine torque request and the motor torque request so as to realize torque response, and if not, the torque request needs to be corrected, and more torque is executed by the motor so as to make up for insufficient torque of the engine and avoid the problem of insufficient power of the vehicle.

Further, the step of determining whether the torque request meets a torque execution condition according to the torque determination value, and if so, responding to the torque request to enable an engine and a motor to execute the corresponding torque request comprises the following steps:

step S21, comparing the engine torque request with the engine to-be-executed torque;

step S22, if the engine torque request is less than or equal to the engine to-be-executed torque, determining that the engine torque request meets an execution condition, and controlling the engine to execute the engine torque request in response to the engine torque request.

In this embodiment, the torque request includes an engine torque request, and the execution condition that the engine torque request meets is that the engine torque request is less than or equal to the engine to-be-executed torque at the current time, so that the engine to-be-executed torque at the current time, that is, the maximum executable torque of the engine, is obtained, the engine torque request and the engine to-be-executed torque are compared, and if the comparison relationship between the engine torque request and the engine to-be-executed torque satisfies the execution condition, the engine is controlled to execute the engine torque request in response to the engine torque request, so as to provide power for the vehicle.

Wherein after comparing the engine torque request and the engine to-be-executed torque, the method comprises the following steps:

step B1, if the engine torque request is larger than the engine to-be-executed torque, calculating an engine torque correction quantity according to the engine to-be-executed torque and the engine external characteristic torque;

step B2, correcting the engine torque request according to the engine torque correction amount to obtain a new engine torque request, and executing the step of obtaining the torque determination value at the current time when receiving the torque request in the hybrid mode.

In this embodiment, if the engine torque request does not satisfy the execution condition, that is, the engine torque request is greater than the maximum executable torque of the engine at the current time, the torque request needs to be corrected to obtain a new engine torque request. In the correction process, the hybrid control module calculates an engine torque correction amount for correcting a torque request according to the torque to be executed by the engine, the external characteristic torque of the engine and a conventional torque correction calculation model, recalculates the engine torque request according to the engine torque correction amount, the battery SOC, the vehicle speed and the like, continues to judge the new engine torque request, judges whether the new engine torque request meets the torque execution condition or not, and controls the engine to execute the engine torque request until the new engine torque request meets the execution condition so as to provide power for the vehicle.

Since the engine to-be-executed torque is dynamically updated, the new engine torque request after the correction is compared with the engine to-be-executed torque at the current time, and the execution condition is not changed, so that whether the engine to-be-executed torque meets the torque execution condition or not is determined. For example, the engine intake air amount at the first time is data N, the engine to-be-executed torque calculated through the data N is N1, the update time of the engine to-be-executed torque is set to 100ms, when a new engine torque request after correction is obtained, the intake air amount at the current time (namely, after 100 ms) is obtained again compared with the engine torque request before correction, the engine to-be-executed torque N2 is calculated, and the new engine torque request is compared with the N2 to determine whether the new engine torque request meets the torque execution condition.

step S23, comparing the motor torque request with the motor external characteristic torque;

step S24, if the motor torque request is smaller than or equal to the external characteristic torque of the motor, determining that the motor torque request meets an execution condition, and controlling the motor to execute the motor torque request in response to the motor torque request.

In this embodiment, the torque request further includes a motor torque request, and the execution condition that the motor torque request meets is that the motor torque request is smaller than or equal to the external characteristic torque of the motor under the current SOC, so that the current external characteristic torque of the motor is obtained, the motor torque request and the external characteristic torque of the motor are compared, and if the comparison relationship between the two satisfies the execution condition of the motor, the motor is controlled to execute the engine torque request in response to the motor torque request, so as to provide power for the vehicle.

Wherein, after comparing the motor torque request with the external characteristic torque of the motor, the method comprises the following steps:

step C1, if the motor torque request is larger than the motor external characteristic torque, calculating a motor torque correction amount according to a motor battery state;

and a step C2 of correcting the motor torque request according to the motor torque correction amount to obtain a new motor torque request, and acquiring a torque determination value at the current time when receiving a torque request in the hybrid mode.

In this embodiment, if the motor torque request does not satisfy the execution condition, that is, the motor torque request is greater than the external characteristic torque of the motor at the current SOC, the motor torque request needs to be corrected to obtain a new motor torque request. Specifically, the motor torque request is corrected according to the engine torque request, so that the motor executes more torque to compensate for insufficient torque of the engine, and it can be understood that the motor torque correction may be performed by a method in which a new motor torque request is obtained by adding the engine torque request before correction to the motor torque request before correction, and adding the motor torque request after correction to the new engine torque request, and continuing to determine the new motor torque request, and determining that the motor engine executes the engine torque request to provide power for the vehicle.

Further, since the lower the battery state of the motor, the weaker the discharge capacity, the more the battery needs to be charged at this time in order not to affect the power supply of the motor, the correction of the motor torque request is affected by the battery state of the motor, and the motor torque request can be corrected according to the engine torque request and the battery state to calculate a new motor torque request.

It should be noted that the above data are calculated based on a conventional calculation model provided in the hybrid control system.

In this embodiment, the method includes the steps of: when a torque request in a hybrid power mode is received, a torque determination value at the current moment is obtained, wherein the torque determination value comprises an engine to-be-executed torque and an external characteristic torque of a motor, and the engine to-be-executed torque is determined by the air intake quantity of the engine; determining whether the torque request meets a torque execution condition or not according to the torque judgment value, and if so, responding to the torque request to enable an engine and a motor to execute corresponding torque requests; through the mode, when a torque request is received, a torque determination value is obtained, the torque determination value comprises the torque to be executed by the engine and the external characteristic torque of the motor, whether the torque request of the engine meets the requirement or not is determined through the torque to be executed by the engine, the torque request is responded when the requirement is met, the torque to be executed by the engine is the maximum torque which can be executed in real time and is determined by the air inflow, the power requirement of the vehicle is met, the control accuracy of the hybrid torque is improved, and the problem that the power of the vehicle is insufficient due to the fact that the external characteristic torque of the engine is larger than the actual execution torque is solved.

Referring to fig. 3, a first embodiment of a torque control method of a powertrain system according to the present invention provides a torque control apparatus of a powertrain system, which includes, based on the embodiment shown in fig. 3, the following:

the acquisition module 10 is used for acquiring a torque determination value at the current moment when a torque request in a hybrid power mode is received, wherein the torque determination value comprises an engine to-be-executed torque and an external characteristic torque of a motor, and the engine to-be-executed torque is determined by an engine air inflow;

and the response module 20 is configured to determine whether the torque request meets a torque execution condition according to the torque determination value, and if so, respond to the torque request so that the engine and the motor execute corresponding torque requests.

Optionally, the response module 20 includes:

the first comparison submodule compares the engine torque request with the engine to-be-executed torque;

and the first response submodule is used for responding to the engine torque request and controlling the engine to execute the engine torque request if the engine torque request is less than or equal to the torque to be executed by the engine and the engine torque request is determined to meet the execution condition.

Optionally, the response module 20 further includes:

the first calculation submodule is used for calculating an engine torque correction quantity according to the engine torque to be executed and the engine external characteristic torque if the engine torque request is larger than the engine torque to be executed;

and a first correction submodule for correcting the engine torque request according to the engine torque correction amount to obtain a new engine torque request, and executing a step of acquiring a torque determination value at the current time when receiving a torque request in a hybrid mode.

Optionally, the response module 20 further includes:

the second comparison submodule compares the motor torque request with the motor external characteristic torque;

and the second response submodule is used for responding to the motor torque request and controlling the motor to execute the motor torque request if the motor torque request is smaller than or equal to the external characteristic torque of the motor and the motor torque request is determined to meet the execution condition.

Optionally, the response module 20 further includes:

the second calculation submodule is used for calculating the torque correction of the motor according to the battery state of the motor if the torque request of the motor is larger than the external characteristic torque of the motor;

and the second correction submodule corrects the motor torque request according to the motor torque correction quantity to obtain a new motor torque request, and executes the step of acquiring the torque judgment value at the current moment when receiving the torque request in the hybrid mode.

Optionally, the apparatus further comprises:

the calculating module is used for acquiring accelerator pedal information and gearbox shaft rotating speed information and calculating the required torque of the whole vehicle;

and the analysis module is used for carrying out torque analysis according to the finished automobile required torque, the battery data and the automobile speed and calculating the torque request.

The specific implementation of the torque control device of the powertrain system of the present application is substantially the same as the embodiments of the torque control method of the powertrain system, and is not further described herein.

In addition, the application also provides a torque control device of the power system. As shown in fig. 4, fig. 4 is a schematic structural diagram of a hardware operating environment according to an embodiment of the present application.

In one possible implementation, fig. 4 may be a schematic diagram of a hardware operating environment of a torque control device of a powertrain system.

As shown in fig. 4, the torque control apparatus of the powertrain system may include a processor 701, a communication interface 702, a memory 703 and a communication bus 704, wherein the processor 701, the communication interface 702 and the memory 703 are in communication with each other via the communication bus 704, and the memory 703 is used for storing computer programs; the processor 701 is configured to implement the steps of the torque control method of the powertrain system when executing the program stored in the memory 703.

The communication bus 704 mentioned above as a torque control device of the powertrain system may be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, etc. The communication bus 704 may be divided into an address bus, a data bus, a control bus, and the like. For ease of illustration, only one thick line is shown, but this does not mean that there is only one bus or one type of bus.

The communication interface 702 is used for communication between the torque control devices of the powertrain system described above and other devices.

The Memory 703 may include a Random Access Memory (RMD) or a Non-Volatile Memory (NM), such as at least one disk Memory. Optionally, the memory 703 may also be at least one memory device located remotely from the processor 701.

The Processor 701 may be a general-purpose Processor, including a Central Processing Unit (CPU), a Network Processor (NP), and the like; but also Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other Programmable logic devices, discrete Gate or transistor logic devices, discrete hardware components.

Furthermore, an embodiment of the present invention also provides a computer-readable storage medium, on which a torque control program of a powertrain system is stored, and the torque control program of the powertrain system, when executed by a processor, implements the steps of the torque control method of the powertrain system as described above.

The specific implementation of the computer readable storage medium of the present application is substantially the same as the embodiments of the torque control method of the powertrain system, and will not be described herein again.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.

The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.

Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) as described above and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.

The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A method of torque control of a powertrain system, comprising:

2. The method of claim 1, wherein the torque request comprises an engine torque request,

comparing the engine torque request with the engine to-be-executed torque;

3. A method of torque control in a powertrain system of claim 2 wherein said step of comparing said engine torque request to said engine pending torque is followed by the step of:

4. The method of claim 2 wherein the torque request further comprises a motor torque request,

5. The method of torque control of a powertrain system of claim 4, wherein after the step of comparing the motor torque request to the motor external characteristic torque, the method comprises:

and correcting the motor torque request according to the motor torque correction amount to obtain a new motor torque request, and acquiring a torque judgment value at the current moment when the torque request in the hybrid mode is received.

6. The method of claim 1, wherein the step of obtaining the torque decision value at the present time upon receipt of a torque request in the hybrid mode is preceded by the step of:

7. The torque control method of a powertrain according to any one of claims 1 to 6, wherein the engine to-be-executed torque is a maximum execution torque corresponding to a real-time torque for a preset time, and the maximum execution torque is dynamically updated based on a preset frequency.

8. An apparatus for controlling torque of a powertrain system, the apparatus comprising:

9. A torque control apparatus of a powertrain system, comprising: memory, a processor and a powertrain torque control program stored on the memory and executable on the processor, the powertrain torque control program when executed by the processor implementing the steps of the method as claimed in any one of claims 1 to 7.

10. A computer readable storage medium, characterized in that the computer readable storage medium has stored thereon a torque control program of a powertrain system, which when executed by a processor, implements the steps of the torque control method of the powertrain system according to any one of claims 1 to 7.