CN116255453A - Gear shifting control method for hybrid electric vehicle, vehicle-mounted controller, vehicle and medium - Google Patents

Gear shifting control method for hybrid electric vehicle, vehicle-mounted controller, vehicle and medium Download PDF

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Publication number
CN116255453A
CN116255453A CN202111510810.8A CN202111510810A CN116255453A CN 116255453 A CN116255453 A CN 116255453A CN 202111510810 A CN202111510810 A CN 202111510810A CN 116255453 A CN116255453 A CN 116255453A
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China
Prior art keywords
engine
target
speed
vehicle
actual
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CN202111510810.8A
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Chinese (zh)
Inventor
任建敏
石兴磊
曾文波
孔丹丹
徐寅
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Guangzhou Automobile Group Co Ltd
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Guangzhou Automobile Group Co Ltd
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Application filed by Guangzhou Automobile Group Co Ltd filed Critical Guangzhou Automobile Group Co Ltd
Priority to CN202111510810.8A priority Critical patent/CN116255453A/en
Priority to PCT/CN2022/119951 priority patent/WO2023103518A1/en
Publication of CN116255453A publication Critical patent/CN116255453A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/04—Smoothing ratio shift
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units, or advanced driver assistance systems for ensuring comfort, stability and safety or drive control systems for propelling or retarding the vehicle
    • B60W30/18—Propelling the vehicle
    • B60W30/19—Improvement of gear change, e.g. by synchronisation or smoothing gear shift
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
    • F16H59/74—Inputs being a function of engine parameters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/62—Hybrid vehicles

Abstract

The invention discloses a gear shifting control method of a hybrid electric vehicle, a vehicle-mounted controller, an automobile and a medium, wherein the gear shifting control method of the hybrid electric vehicle comprises the following steps: acquiring a current gear shifting request and current vehicle data, wherein the current vehicle data comprises the actual rotating speed of an engine; judging whether a gear shifting impact condition is met or not based on the current gear shifting request and current vehicle data; if the gear shifting impact condition is met, acquiring the target rotating speed of the engine according to the actual rotating speed of the engine; and controlling the generator to work according to the target rotating speed of the engine and the actual rotating speed of the engine. According to the technical scheme, the stability of the hybrid electric vehicle in the gear shifting process can be improved.

Description

Gear shifting control method for hybrid electric vehicle, vehicle-mounted controller, vehicle and medium
Technical Field
The invention relates to the technical field of hybrid vehicles, in particular to a hybrid vehicle gear shifting control method, a vehicle-mounted controller, a vehicle and a medium.
Background
The existing power split hybrid electric vehicle generally comprises an engine, a generator MG1, a motor MG2 and a power split mechanism positioned between the generator MG1 and the motor MG2, and oil-electricity hybrid is realized by controlling the operations of the engine, the generator MG1, the motor MG2 and the power split mechanism.
However, in the gear shift control of the hybrid electric vehicle, for example, when the P/D/R gear is shifted to the N gear, the control process of the ECU (Engine Control Unit, the engine control unit, abbreviated as ECU) and the VCU (Vehicle Control Unit, the whole vehicle controller, abbreviated as VCU) is completely decoupled, so that the power split hybrid electric vehicle has a significant impact in the gear shift process.
Disclosure of Invention
The embodiment of the invention provides a gear shifting control method of a hybrid electric vehicle, a vehicle-mounted controller, the vehicle and a medium, so as to solve the problem of gear shifting impact of the hybrid electric vehicle.
A hybrid vehicle shift control method comprising:
acquiring a current gear-shifting request and current vehicle data, wherein the current vehicle data comprises the actual rotating speed of an engine;
judging whether a gear shifting impact condition is met or not based on the current gear shifting request and the current vehicle data;
if the gear shifting impact condition is met, acquiring an engine target rotating speed according to the actual rotating speed of the engine;
and controlling the generator to work according to the target engine speed and the actual engine speed.
Further, the current vehicle data comprise the speed of the whole vehicle and the actual rotation speed of the engine;
the determining whether a shift impact condition is satisfied based on the current shift request and the current vehicle data includes:
and if the current gear shifting request is that the non-neutral gear is switched to the neutral gear, the speed of the whole vehicle is equal to a preset speed, and the actual rotating speed of the engine is larger than a target rotating speed threshold value, the gear shifting impact condition is considered to be met.
Further, the obtaining the target engine speed according to the actual engine speed includes:
and obtaining the target rotating speed of the engine according to the actual rotating speed of the engine and the target rotating speed compensation value.
Further, the controlling the generator to work according to the target engine speed and the actual engine speed includes:
and in a target control period, controlling the generator to work according to the target engine speed and the actual engine speed.
Further, in the target control period, according to the target engine speed and the actual engine speed, controlling the generator to work includes:
acquiring an engine speed difference value according to the target engine speed and the actual engine speed;
acquiring a target adjusting torque according to the engine speed difference value;
and in a target control period, controlling the generator to adjust the torque according to the target adjustment torque.
Further, the obtaining the target adjustment torque according to the engine speed difference value includes:
and obtaining the target regulating torque according to the engine rotating speed difference value and the rotating speed regulating coefficient.
Further, after controlling the generator to operate according to the target engine speed and the actual engine speed in the target control period, the hybrid vehicle gear shift control method further includes:
and after the target control period, controlling the engine to work according to the current vehicle data.
The vehicle-mounted controller comprises a memory, a processor and a computer program which is stored in the memory and can run on the processor, wherein the processor realizes the gear shifting control method of the hybrid electric vehicle when executing the computer program.
A hybrid electric vehicle comprises the vehicle-mounted controller.
A computer readable storage medium storing a computer program which when executed by a processor implements the hybrid vehicle shift control method described above.
According to the gear shifting control method of the hybrid electric vehicle, the vehicle-mounted controller, the vehicle and the medium, after the vehicle-mounted controller obtains the current gear shifting request and the current vehicle data, whether the gear shifting impact condition is met or not is judged according to the current gear shifting request and the current vehicle data, the engine target rotating speed is obtained according to the actual engine rotating speed when the gear shifting impact condition is met, and finally the generator is controlled to work according to the engine target rotating speed and the actual engine rotating speed, so that whether the gear shifting impact condition is met or not can be timely judged according to the current gear shifting request and the current vehicle data, and the generator can be controlled to work according to the engine target rotating speed and the actual engine rotating speed, so that the generator torque and the engine torque can be interacted, the torque balance is ensured, and the stability in the gear shifting process of the hybrid electric vehicle is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments of the present invention 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 flow chart of a hybrid vehicle shift control method according to an embodiment of the present invention;
FIG. 2 is another flow chart of a hybrid vehicle shift control method in accordance with an embodiment of the present invention;
fig. 3 is a schematic diagram of an in-vehicle controller according to an embodiment of the invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The gear shifting control method for the hybrid electric vehicle provided by the embodiment of the invention can be applied to the hybrid electric vehicle. The hybrid electric vehicle comprises a vehicle-mounted controller. The vehicle-mounted controller comprises, but is not limited to, a memory, a processor and a computer program stored in the memory and capable of running on the processor, wherein the processor realizes the gear shifting control method of the hybrid electric vehicle when executing the computer program.
In an embodiment, as shown in fig. 1, a gear shift control method of a hybrid vehicle is provided, and the method is described by using a vehicle-mounted controller as an example, and includes the following steps:
s101: a current shift request and current vehicle data are obtained, the current vehicle data including an actual engine speed.
S102: based on the current shift request and the current vehicle data, it is determined whether a shift shock condition is satisfied.
S103: and if the gear shifting impact condition is met, acquiring the target rotating speed of the engine according to the actual rotating speed of the engine.
S104: and controlling the generator to work according to the target rotating speed of the engine and the actual rotating speed of the engine.
The current gear shifting request refers to a request for indicating the vehicle-mounted controller to perform gear shifting. For example, the current shift request is used to instruct the on-board controller to shift the current gear to the target gear. Alternatively, the current gear is P (park)/D (forward)/R (reverse), i.e., non-neutral. The target gear is an N (neutral) gear. The current vehicle data refers to vehicle data acquired at the current time. As an example, the current vehicle data includes the vehicle speed of the whole vehicle and the actual rotational speed of the engine. The speed of the whole car refers to the speed of the hybrid car. The actual engine speed refers to the actual engine speed in the hybrid vehicle.
As an example, in step S101, the in-vehicle controller acquires a current shift request and current vehicle data. In this example, in order to avoid the problem of shift impact of the hybrid electric vehicle during a shift process, the vehicle-mounted controller needs to acquire current vehicle data when acquiring a current shift request, so as to determine whether the hybrid electric vehicle is caused to have the problem of shift impact when responding to the current shift request according to the current shift request and the current vehicle data, thereby improving the stability of the hybrid electric vehicle during the shift process.
The gear shifting impact condition is a condition set by a user in a self-defining way and is used for judging whether the gear shifting impact problem occurs to the hybrid electric vehicle when the vehicle-mounted controller responds to the current gear shifting request.
As an example, in step S102, the in-vehicle controller determines whether a shift shock condition is satisfied based on the current shift request and the current vehicle data. For example, when the hybrid vehicle is stationary and the engine is still rotating, if the current shift request is to shift from non-neutral to neutral, then the torque balancing formula is followed: t (T) eng -T(MG1，MG2)≤T D Wherein T is eng Is the engine torque, T (MG 1, MG 2) is the system torque, T D Is a mechanical damping torque. Before the vehicle-mounted controller shifts the non-neutral gear to the neutral gear, the VCU is in a load operation mode at the moment, the work done by the engine is used for the generator MG1 to generate electricity, and the torque in the hybrid vehicle is in an equilibrium state. When the vehicle-mounted controller shifts the non-neutral gear to the neutral gear, as the target engine rotating speed output by the VCU is reduced to 0 and the engine torque is gradually reduced due to the filtering function, the torque of the generator and the torque of the engine cannot be interacted when the hybrid electric vehicle shifts the non-neutral gear to the neutral gear, so that the torque of the hybrid electric vehicle is unbalanced, and the problem of gear shifting impact occurs. Therefore, the vehicle-mounted controller needs to judge whether the gear shifting impact condition is met or not based on the current gear shifting request and the current vehicle data so as to ensure the stability of the hybrid vehicle in the process of shifting from a non-neutral gear to a neutral gear in the subsequent steps.
The engine target rotation speed refers to the rotation speed of the engine output by the VCU.
As an example, in step S103, the in-vehicle controller acquires the engine target rotation speed from the engine actual rotation speed after judging that the shift shock condition is satisfied based on the current shift request and the current vehicle data. For example, the vehicle-mounted controller inputs the actual engine speed according to a preset target speed calculation strategy, and can output the target engine speed. In this example, the target rotation speed calculation strategy is a calculation strategy set in advance by the user, and by inputting the actual rotation speed of the engine, the calculation strategy of the target rotation speed of the engine can be output.
As an example, in step S104, the in-vehicle controller controls the generator to operate according to the engine target rotation speed and the engine actual rotation speed. In order to ensure that the torque in the hybrid electric vehicle is in an equilibrium state, interaction between the generator torque and the engine torque can be realized, so that gear shifting impact of the hybrid electric vehicle in the process of shifting from non-neutral gear to neutral gear is prevented. In this example, since the engine torque gradually decreases due to the filtering function after the vehicle-mounted controller shifts the non-neutral gear to the neutral gear, by ensuring that the torque of the generator MG1 is positive, the generator operation can be controlled even if the target engine speed is greater than the actual engine speed, so that the generator torque and the engine torque after the vehicle-mounted controller shifts the non-neutral gear to the neutral gear are balanced, and the stability of the hybrid vehicle in the process of shifting from the non-neutral gear to the neutral gear is improved.
As another example, the vehicle-mounted controller inputs the target rotation speed of the engine and the actual rotation speed of the engine according to a preset adjustment torque calculation strategy, outputs the target adjustment torque, controls the generator to work according to the target adjustment torque, and controls the engine to work after the hybrid electric vehicle is stable, so that the stability of the hybrid electric vehicle in the process of switching from non-neutral gear to neutral gear is improved. In this example, the adjustment torque calculation strategy is a calculation strategy set in advance by the user, and by inputting the engine target rotation speed and the engine actual rotation speed, the target adjustment torque can be output.
In this embodiment, the vehicle-mounted controller determines whether a shift impact condition is satisfied according to the obtained current shift request and current vehicle data, and when the shift impact condition is satisfied, obtains an engine target rotation speed according to an engine actual rotation speed, and finally controls the generator to work according to the engine target rotation speed and the engine actual rotation speed, so that whether the shift impact condition is satisfied can be timely determined according to the current shift request and the current vehicle data, and the generator can be controlled to work according to the engine target rotation speed and the engine actual rotation speed, so that the generator torque and the engine torque can be interacted, the torque balance between the generator torque and the engine torque is ensured, and the stability in the gear shifting process of the hybrid vehicle is improved.
In one embodiment, the current vehicle data includes vehicle speed and actual engine speed; in step S102, that is, based on the current shift request and the current vehicle data, determining whether the shift shock condition is satisfied includes: and if the current gear shifting request is that the non-neutral gear is switched to the neutral gear, the speed of the whole vehicle is equal to the preset speed and the actual rotation speed of the engine is greater than the target rotation speed threshold, the gear shifting impact condition is considered to be met.
The preset vehicle speed is a vehicle speed set by a user in a self-defining way. The target rotational speed threshold is a rotational speed for custom setting. Preferably, the preset vehicle speed is 0km/h and the target rotational speed threshold is 1000r/min.
As an example, if the current gear shift request is that the non-neutral gear is shifted to the neutral gear, the vehicle speed of the whole vehicle is equal to 0km/h, and the actual rotation speed of the engine is greater than 1000r/min, that is, the hybrid vehicle is in a stationary state, and when the non-neutral gear is shifted to the neutral gear, through the analysis of the above embodiment, the hybrid vehicle is easy to generate a gear shift impact at this time, so that the vehicle-mounted controller determines that the gear shift impact condition is met, so as to control the operation of the generator according to the target rotation speed of the engine and the actual rotation speed of the engine in the subsequent steps, and further improve the stability of the hybrid vehicle in the gear shift process.
As another example, if the current shift request is not a non-neutral shift to neutral, or the vehicle speed of the whole vehicle is not equal to the preset vehicle speed, or the actual engine speed is not greater than the target speed threshold, it is determined that the shift shock condition is not satisfied.
In this embodiment, when the current gear shift request is a non-neutral gear to be shifted to a neutral gear, and when the vehicle speed of the whole vehicle is equal to a preset vehicle speed and the actual rotation speed of the engine is greater than a target rotation speed threshold, the vehicle-mounted controller can identify that the gear shift impact condition is met, and in the subsequent steps, the generator is controlled to work according to the target rotation speed of the engine and the actual rotation speed of the engine, so that the stability of the hybrid vehicle in the gear shift process is improved.
In one embodiment, in step S103, that is, according to the actual engine speed, the obtaining the target engine speed includes: and obtaining the target rotating speed of the engine according to the actual rotating speed of the engine and the target rotating speed compensation value.
The target rotating speed compensation value is a rotating speed which is set by a user in a self-defining mode. Preferably, the target rotational speed compensation value is 30-50r/min.
As an example, the in-vehicle controller obtains the engine target rotation speed based on the engine actual rotation speed and the target rotation speed compensation value. The vehicle-mounted controller adopts a preset target rotating speed calculation formula, and obtains the target rotating speed of the engine according to the actual rotating speed of the engine and the target rotating speed compensation value. For example, the preset target rotation speed calculation formula is: n (N) tag ＝n 1 And + [ delta ] N, where N tag For the target engine speed, n 1 And delta n is a target rotation speed compensation value for the actual rotation speed of the engine. Therefore, the vehicle-mounted controller inputs the actual engine speed and the target speed compensation value according to a preset target speed calculation formula, and can acquire the target engine speed, so that the target engine speed output by the VCU is ensured to be larger than the actual engine speed, the torque of the generator MG1 is ensured to be positive torque, the generator torque and the engine torque after the vehicle-mounted controller switches the non-neutral gear to the neutral gear are kept balanced, and the stability of the hybrid electric vehicle in the process of switching from the non-neutral gear to the neutral gear is improved.
In this embodiment, the vehicle-mounted controller obtains the target engine speed according to the actual engine speed and the target speed compensation value, so that the target engine speed output by the VCU is greater than the actual engine speed, the torque of the generator MG1 is ensured to be positive torque, and even if the generator torque and the engine torque are balanced in the process of switching from non-neutral gear to neutral gear, the stability of the hybrid electric vehicle in the process of switching from non-neutral gear to neutral gear is improved.
In one embodiment, in step S104, that is, according to the target engine speed and the actual engine speed, the operation of the generator is controlled, including: and in the target control period, controlling the generator to work according to the target rotating speed of the engine and the actual rotating speed of the engine.
The target control period refers to a period of time set by a user in a user-defined manner. Preferably, the target control period is 1 second. For example, the hybrid vehicle shifts the gear from the non-neutral gear to the neutral gear within 1 second, and the engine torque T eng The torque of the generator MG1 is gradually reduced along with the actual rotation of the engine, and the torque of the engine cannot be interacted, so that the moment balance state is broken, and the gear shifting impact is generated.
As an example, the vehicle-mounted controller controls the generator to work according to the target engine speed and the actual engine speed in the target control period, so that the generator can be controlled to work according to proper torque according to the target engine speed and the actual engine speed in the target control period, gear shifting impact is avoided, and stability of the hybrid electric vehicle in the process of shifting from non-neutral gear to neutral gear is improved.
As another example, after the target control period, the vehicle-mounted controller finishes shifting gears of the hybrid vehicle at this time and is in a neutral state, so that only the engine operation needs to be controlled.
In this embodiment, the vehicle-mounted controller controls the generator to work according to the target engine speed and the actual engine speed in the target control period, so that gear shifting impact is avoided in the target control period after the hybrid electric vehicle is switched to the neutral gear, and stability of the hybrid electric vehicle in the process of switching from the non-neutral gear to the neutral gear is improved.
In one embodiment, as shown in fig. 2, in step S104, controlling the generator to operate according to the target engine speed and the actual engine speed includes:
s201: and obtaining an engine speed difference value according to the target engine speed and the actual engine speed.
S202: and obtaining the target regulating torque according to the engine speed difference value.
S203: and in the target control period, controlling the generator to adjust the torque according to the target adjustment torque.
The engine speed difference is the difference between the target engine speed and the actual engine speed.
As an example, in step S201, the in-vehicle controller determines a difference between the engine target rotation speed and the engine actual rotation speed as an engine rotation speed difference, based on the engine target rotation speed and the engine actual rotation speed.
As another example, in step S202, the in-vehicle controller acquires the target adjustment torque from the engine speed difference. The vehicle-mounted controller can output target adjustment torque according to a preset adjustment torque calculation strategy, and according to the engine speed difference value after obtaining the engine speed difference value according to the target engine speed and the actual engine speed.
As another example, in step S203, the vehicle-mounted controller controls the generator to operate according to the target engine speed and the actual engine speed during the target control period, so that the generator can be controlled to operate according to the target adjustment torque according to the target engine speed and the actual engine speed during the target control period, thereby avoiding gear shift shock and improving the stability of the hybrid vehicle during the process of shifting from non-neutral gear to neutral gear. In the example, the vehicle-mounted controller can control the generator to adjust the torque according to the target adjusting torque in the target control period, so that gear shifting impact is avoided, and stability of the hybrid electric vehicle in the process of shifting from non-neutral gear to neutral gear is improved.
In this embodiment, after the vehicle-mounted controller obtains the engine speed difference according to the engine target speed and the engine actual speed, the vehicle-mounted controller obtains the target adjustment torque according to the engine speed difference, so that the vehicle-mounted controller can control the generator to work according to the engine target speed and the engine actual speed in a target control period, and the generator torque and the engine torque after the vehicle-mounted controller shifts from the non-neutral gear to the neutral gear are kept balanced, so that the stability in the process of shifting from the non-neutral gear to the neutral gear is ensured.
In one embodiment, in step S202, that is, according to the engine speed difference, the target adjustment torque is obtained, which includes: and obtaining target regulating torque according to the engine rotating speed difference value and the rotating speed regulating coefficient.
The rotation speed adjusting coefficient is a coefficient which is set in a self-defining mode.
As an example, the in-vehicle controller obtains the target adjustment torque based on the engine speed difference and the speed adjustment coefficient. For example, the on-board controller may input the engine speed difference and the speed adjustment coefficient using a preset adjustment torque calculation formula to enable the output of the target adjustment torque. For example, the preset adjustment torque calculation formula is: t (T) mg1 ＝K*(N tag -N eng ). Wherein T is mg1 To adjust torque to target, N tag For the target engine speed, N eng And K is a rotation speed regulating coefficient for the target rotation speed of the engine.
In this embodiment, the vehicle-mounted controller can obtain the target adjustment torque according to the engine rotational speed difference value and the rotational speed adjustment coefficient, so as to adjust the engine torque through the target adjustment torque, thereby keeping the balance between the generator torque and the engine torque after the vehicle-mounted controller switches the non-neutral gear to the neutral gear.
In an embodiment, after controlling the generator to operate according to the target engine speed and the actual engine speed in the target control period, the hybrid vehicle gear shift control method further includes: after the target control period, the engine operation is controlled based on the current vehicle data.
As an example, after the target control period, at this time, the hybrid vehicle is shifted from the non-neutral gear to the neutral gear, that is, the hybrid vehicle is in the neutral gear state, and the engine operation may be controlled according to the current vehicle data obtained when the hybrid vehicle is not in the neutral gear, for example, the engine is controlled to operate at the actual engine speed.
In this embodiment, after the target control period, the vehicle-mounted controller controls the engine to operate according to the current vehicle data, so as to complete the gear shifting process from the non-neutral gear to the neutral gear of the hybrid electric vehicle.
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.
In one embodiment, an in-vehicle controller is provided, which may be a server, and the internal structure thereof may be as shown in fig. 3. The vehicle-mounted controller comprises a processor, a memory, a network interface and a database which are connected through a system bus. Wherein the processor of the on-board controller is configured to provide computing and control capabilities. The memory of the vehicle-mounted controller comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, computer programs, and a database. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage media. The database of the vehicle-mounted controller is used for storing data in the process of realizing the gear shifting control method of the hybrid electric vehicle. The network interface of the vehicle-mounted controller is used for communicating with an external terminal through network connection. The computer program, when executed by a processor, implements a hybrid vehicle shift control method.
In an embodiment, a vehicle-mounted controller is provided, which includes a memory, a processor, and a computer program stored in the memory and capable of running on the processor, where the processor executes the computer program to implement the hybrid vehicle shift control method in the above embodiment, for example, steps S101 to S104, and in order to avoid repetition, the description is omitted here.
In one embodiment, a hybrid vehicle is provided that includes the on-board controller of the above embodiments.
In an embodiment, a computer readable storage medium is provided, and a computer program is stored on the computer readable storage medium, and when the computer program is executed by a processor, the method for controlling gear shifting of a hybrid vehicle in the above embodiment is implemented, for example, steps S101 to S104, and is not repeated here.
Those skilled in the art will appreciate that implementing all or part of the above described methods may be accomplished by way of a computer program stored on a non-transitory computer readable storage medium, which when executed, may comprise the steps of the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in the various embodiments provided herein may include non-volatile and/or volatile memory. The nonvolatile memory can include Read Only Memory (ROM), programmable ROM (PROM), electrically Programmable ROM (EPROM), electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous Link DRAM (SLDRAM), memory bus direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), among others.
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 above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; 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. The gear shifting control method for the hybrid electric vehicle is characterized by comprising the following steps of:
acquiring a current gear-shifting request and current vehicle data, wherein the current vehicle data comprises the actual rotating speed of an engine;
judging whether a gear shifting impact condition is met or not based on the current gear shifting request and the current vehicle data;
if the gear shifting impact condition is met, acquiring an engine target rotating speed according to the actual rotating speed of the engine;
and controlling the generator to work according to the target engine speed and the actual engine speed.
2. The hybrid vehicle shift control method according to claim 1, wherein the current vehicle data includes a vehicle speed of the whole vehicle and an actual rotational speed of the engine;
the determining whether a shift impact condition is satisfied based on the current shift request and the current vehicle data includes:
and if the current gear shifting request is that the non-neutral gear is switched to the neutral gear, the speed of the whole vehicle is equal to a preset speed, and the actual rotating speed of the engine is larger than a target rotating speed threshold value, the gear shifting impact condition is considered to be met.
3. The shift control method of a hybrid vehicle according to claim 1, wherein the obtaining an engine target rotation speed from the engine actual rotation speed includes:
and obtaining the target rotating speed of the engine according to the actual rotating speed of the engine and the target rotating speed compensation value.
4. The shift control method of hybrid vehicle according to claim 1, wherein said controlling operation of the generator according to said target engine speed and said actual engine speed comprises:
and in a target control period, controlling the generator to work according to the target engine speed and the actual engine speed.
5. A hybrid vehicle shift control method as set forth in claim 4, wherein said controlling operation of the generator in accordance with said engine target speed and said engine actual speed during a target control period includes:
acquiring an engine speed difference value according to the target engine speed and the actual engine speed;
acquiring a target adjusting torque according to the engine speed difference value;
and in a target control period, controlling the generator to adjust the torque according to the target adjustment torque.
6. The hybrid vehicle shift control method according to claim 5, wherein the obtaining a target adjustment torque based on the engine speed difference value includes:
and obtaining the target regulating torque according to the engine rotating speed difference value and the rotating speed regulating coefficient.
7. The hybrid vehicle shift control method according to claim 4, characterized in that, after the generator operation is controlled in accordance with the engine target rotation speed and the engine actual rotation speed in the target control period, the hybrid vehicle shift control method further:
and after the target control period, controlling the engine to work according to the current vehicle data.
8. An in-vehicle controller comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the hybrid vehicle shift control method of any one of claims 1 to 7 when executing the computer program.
9. A hybrid vehicle comprising the in-vehicle controller of claim 8.
10. A computer-readable storage medium storing a computer program, wherein the computer program when executed by a processor implements the hybrid vehicle shift control method according to any one of claims 1 to 7.
CN202111510810.8A 2021-12-10 2021-12-10 Gear shifting control method for hybrid electric vehicle, vehicle-mounted controller, vehicle and medium Pending CN116255453A (en)

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JP5790744B2 (en) * 2013-11-26 2015-10-07 トヨタ自動車株式会社 Hybrid vehicle and control method thereof
CN104002814B (en) * 2014-05-30 2016-08-24 武汉合康动力技术有限公司 A kind of shifting method based on AMT parallel type hybrid vehicle system, device and vehicle
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