CN116857360A - Vehicle gear shifting method, device, equipment and storage medium - Google Patents
Vehicle gear shifting method, device, equipment and storage medium Download PDFInfo
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- CN116857360A CN116857360A CN202310763138.6A CN202310763138A CN116857360A CN 116857360 A CN116857360 A CN 116857360A CN 202310763138 A CN202310763138 A CN 202310763138A CN 116857360 A CN116857360 A CN 116857360A
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- vehicle
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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
- F16H61/0437—Smoothing ratio shift by using electrical signals
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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
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/40—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism comprising signals other than signals for actuating the final output mechanisms
- F16H63/50—Signals to an engine or motor
- F16H63/502—Signals to an engine or motor for smoothing gear shifts
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Transmission Device (AREA)
Abstract
The present disclosure relates to a vehicle gear shifting method, apparatus, device and storage medium, the method comprising: in response to an upshift command, controlling an engine torque of a vehicle to decrease, and maintaining a clutch of the vehicle in a engaged state, performing an upshift operation; adjusting an engine speed and a countershaft speed of the vehicle through a countershaft brake of the vehicle, and determining a target gear by performing a gear selection operation; controlling the clutch to be separated, and executing a gear engaging operation based on the target gear; controlling the clutch to be engaged and controlling the engine torque of the vehicle to be increased. The present disclosure can reduce the time for engine speed regulation, thereby shortening the time for vehicle upshift, and further improving the NVH level of the vehicle.
Description
Technical Field
The disclosure relates to the technical field of vehicle control, and in particular relates to a vehicle gear shifting method, device, equipment and storage medium.
Background
Currently, because an electrically controlled mechanical automatic transmission (Automated Mechanical Transmission, AMT) does not need a driver to shift gears, the labor intensity is greatly reduced, and the fuel economy of a vehicle can be improved, so that the matching of the vehicle with the AMT is more and more common.
Upshifting is an optional control strategy for AMT, and the conventional upshifting process can be divided into the following processes: engine torque, clutch disengagement, gear shift, gear selection, speed regulation, gear engagement, clutch engagement and engine torque reduction. The speed regulation comprises intermediate shaft speed regulation and engine speed regulation. The speed regulation of the intermediate shaft is to reduce the rotation speed of the intermediate shaft through an intermediate shaft brake of the AMT, and the speed regulation of the engine is to reduce the rotation speed of the engine through natural friction or engine braking. Because the engine speed regulation takes more time, the AMT upshift process takes more time, and the NVH (Noise, vibration, harshmness, noise, vibration and harshness) index of the vehicle is poor.
Disclosure of Invention
The disclosure provides a vehicle gear shifting method, device, equipment and storage medium, which can shorten the time for vehicle gear upshift and improve the NVH level of a vehicle.
According to a first aspect of embodiments of the present disclosure, there is provided a vehicle shift method, the method comprising:
in response to an upshift command, controlling an engine torque of a vehicle to decrease, and maintaining a clutch of the vehicle in a engaged state, performing an upshift operation;
adjusting an engine speed and a countershaft speed of the vehicle through a countershaft brake of the vehicle, and determining a target gear by performing a gear selection operation;
controlling the clutch to be separated, and executing a gear engaging operation based on the target gear;
controlling the clutch to be engaged and controlling the engine torque of the vehicle to be increased.
According to the technical scheme provided by the embodiment of the disclosure, the engine torque of the vehicle is controlled to be reduced by responding to the upshift command, the clutch of the vehicle is kept in a combined state, and the gear shifting operation is executed. Since the clutch is in the engaged state, the present disclosure adjusts the engine speed and the intermediate shaft speed through the intermediate shaft brake of the vehicle, and determines the target gear by performing the gear selection operation, thereby shortening the time for adjusting the engine speed. And, the present disclosure controls the clutch to be disengaged and the shift-in operation to be performed based on the target gear, controls the clutch to be engaged and controls the engine torque of the vehicle to be raised, thereby realizing the vehicle upshift, and shortening the time of the vehicle upshift while ensuring the upshift position control accuracy, and improving the NVH level of the vehicle.
In one possible implementation, the adjusting the engine speed and the intermediate shaft speed of the vehicle by the intermediate shaft brake of the vehicle includes:
and reducing the engine speed and the intermediate shaft speed by controlling the intermediate shaft brake until the current speed of the engine is less than or equal to a set first speed threshold and the current speed of the intermediate shaft is less than or equal to a set second speed threshold.
According to the technical scheme provided by the embodiment of the disclosure, the engine rotating speed and the intermediate shaft rotating speed are reduced through the intermediate shaft brake until the engine rotating speed and the intermediate shaft rotating speed respectively meet the set conditions, so that the time for adjusting the engine rotating speed is shortened, the time for vehicle upshifting is shortened, and the NVH level of a vehicle is improved.
In one possible implementation, the controlling the engine torque reduction of the vehicle includes:
controlling the engine torque to decrease according to a set first rate of change;
until the engine torque is less than or equal to a set engine torque threshold.
According to the technical scheme provided by the embodiment of the disclosure, the engine torque is controlled to be reduced according to the set first change rate until the engine torque meets the set condition, so that the engine torque is ensured to be accurate.
In one possible implementation manner, the performing an off-shift operation includes:
acquiring a first position of a current gear in real time;
and if the distance between the first position and the second position where the neutral gear is located is smaller than or equal to a set first threshold value, stopping executing the gear shifting operation.
According to the technical scheme provided by the embodiment of the disclosure, the gear is determined to be shifted to the position by determining that the distance between the first position where the current gear is located and the second position where the neutral gear is located is smaller than or equal to the set second threshold value, so that the gear shifting operation is stopped.
In one possible implementation, the controlling the clutch to disengage includes:
acquiring the distance between the flywheel of the clutch and the friction plate of the clutch in real time;
and if the distance is greater than or equal to the set distance threshold, stopping controlling the clutch to be separated.
According to the technical scheme provided by the embodiment of the disclosure, the clutch is determined to be completely separated by determining that the distance between the flywheel of the clutch and the friction plate of the clutch is larger than or equal to the set distance threshold value, so that the clutch separation is stopped.
In one possible implementation manner, the performing a gear shift operation based on the target gear shift includes:
acquiring a third position of the current gear in real time;
and if the distance between the third position and the fourth position where the target gear is located is smaller than or equal to a set second threshold value, stopping executing the gear engaging operation.
According to the technical scheme provided by the embodiment of the disclosure, the gear is determined to be in the engaged state by determining that the distance between the third position where the current gear is located and the fourth position where the target gear is located is smaller than or equal to the set second threshold value, so that the gear engaging operation is stopped.
In one possible implementation, the controlling the engine torque rise of the vehicle includes:
controlling the engine torque to rise according to a set second rate of change;
until the engine torque is greater than or equal to a target engine torque, wherein the target engine torque is determined according to an accelerator pedal opening and an engine speed of the vehicle.
According to the technical scheme provided by the embodiment of the disclosure, the engine torque is controlled to rise according to the set second change rate until the engine torque is greater than or equal to the target engine torque, so that the engine torque is ensured to be accurate.
According to a second aspect of embodiments of the present disclosure, there is provided a vehicle shift device, the device comprising:
the gear shifting module is used for responding to the gear shifting instruction, controlling the engine torque of the vehicle to be reduced, keeping the clutch of the vehicle in a combined state and executing gear shifting operation;
the adjusting module is used for adjusting the engine speed and the intermediate shaft speed of the vehicle through the intermediate shaft brake of the vehicle and determining a target gear through executing gear selection operation;
the gear shifting module is used for controlling the clutch to be separated and executing gear shifting operation based on the target gear;
a control module for controlling the clutch engagement and controlling the engine torque rise of the vehicle.
In one possible implementation, the adjusting module is configured to:
and reducing the engine speed and the intermediate shaft speed by controlling the intermediate shaft brake until the current speed of the engine is less than or equal to a set first speed threshold and the current speed of the intermediate shaft is less than or equal to a set second speed threshold.
In one possible implementation, the shift-off module is configured to:
controlling the engine torque to decrease according to a set first rate of change;
until the engine torque is less than or equal to a set engine torque threshold.
In one possible implementation, the shift-off module is configured to:
acquiring a first position of a current gear in real time;
and if the distance between the first position and the second position where the neutral gear is located is smaller than or equal to a set first threshold value, stopping executing the gear shifting operation.
In one possible implementation, the gear-shifting module is configured to:
acquiring the distance between the flywheel of the clutch and the friction plate of the clutch in real time;
and if the distance is greater than or equal to the set distance threshold, stopping controlling the clutch to be separated.
In one possible implementation, the gear-shifting module is configured to:
acquiring a third position of the current gear in real time;
and if the distance between the third position and the fourth position where the target gear is located is smaller than or equal to a set second threshold value, stopping executing the gear engaging operation.
In one possible implementation, the control module is configured to:
controlling the engine torque to rise according to a set second rate of change;
until the engine torque is greater than or equal to a target engine torque, wherein the target engine torque is determined according to an accelerator pedal opening and an engine speed of the vehicle.
According to a third aspect of embodiments of the present disclosure, there is provided an apparatus comprising: a processor; a memory for storing processor-executable instructions; wherein the processor implements the steps of the vehicle shift method described above by executing the executable instructions.
According to a fourth aspect of embodiments of the present disclosure, there is provided a computer readable storage medium having stored thereon computer instructions which, when executed by a processor, implement the steps of the vehicle shift method described above.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings that are needed in the description of the embodiments will be briefly described below, it will be apparent that the drawings in the following description are only some embodiments of the present disclosure, and that other drawings may be obtained according to these drawings without inventive effort to a person of ordinary skill in the art.
FIG. 1 is a flowchart illustrating a conventional vehicle upshift method according to an exemplary embodiment;
FIG. 2 is a schematic diagram of an application scenario illustrated in accordance with an exemplary embodiment;
FIG. 3 is a flowchart illustrating a vehicle shift method according to an exemplary embodiment;
FIG. 4 is a particular flow chart illustrating a vehicle shift method according to an exemplary embodiment;
FIG. 5 is a schematic illustration of a vehicle shift arrangement according to an exemplary embodiment;
FIG. 6 is a schematic diagram of an electronic device illustrating a vehicle shift method according to an exemplary embodiment;
FIG. 7 is a program product schematic diagram illustrating a vehicle shift method according to an exemplary embodiment.
Detailed Description
For the purpose of promoting an understanding of the principles and advantages of the disclosure, reference will now be made in detail to the drawings, in which it is apparent that the embodiments described are only some, but not all embodiments of the disclosure. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the disclosure, are within the scope of the disclosure based on the embodiments in the disclosure.
Some words appearing hereinafter are explained:
1. the term "and/or" in the embodiments of the present disclosure describes an association relationship of association objects, which indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone. The character "/" generally indicates that the context-dependent object is an "or" relationship.
2. The terms first, second and the like in the description and in the claims of the embodiments of the disclosure and in the above-described figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the disclosure described herein may be capable of operation in sequences other than those illustrated or described herein.
The application scenario described in the embodiments of the present disclosure is for more clearly describing the technical solution of the embodiments of the present disclosure, and does not constitute a limitation on the technical solution provided by the embodiments of the present disclosure, and as a person of ordinary skill in the art can know that, with the appearance of a new application scenario, the technical solution provided by the embodiments of the present disclosure is equally applicable to similar technical problems. In the description of the present disclosure, unless otherwise indicated, the meaning of "a plurality" is two or more.
At present, the AMT does not need to be shifted by a driver, so that the labor intensity is greatly reduced, and the fuel economy of the vehicle can be improved, and the matching of the vehicle with the AMT is more and more common.
Upshifting is an optional control strategy for an AMT, and fig. 1 is a flowchart illustrating a conventional vehicle upshifting method according to an exemplary embodiment, as shown in fig. 1, comprising:
step 101, controlling the engine torque of the vehicle to be reduced in response to an upshift command;
step 102, controlling the clutch of the vehicle to be separated;
step 103, executing a gear shifting operation;
specifically, after it is determined that the clutch of the vehicle is completely disengaged and engine torque is not transmitted, an off-shift operation is performed.
Step 104, determining a target gear by executing a gear selecting operation;
step 105, adjusting the rotating speed of a middle shaft of the vehicle;
the above-mentioned intermediate shaft speed regulation is to reduce the intermediate shaft speed by means of the intermediate shaft brake of the vehicle. The main purpose of the intermediate shaft speed regulation is to match the intermediate shaft speed with the speed of the transmission output shaft so that the combination sleeve of the transmission is more easily meshed with the transmission output shaft.
The adjusting the rotation speed of the intermediate shaft of the vehicle specifically comprises:
if the difference between the target intermediate shaft rotational speed and the current intermediate shaft rotational speed is smaller than the intermediate shaft shift slip (set calibration amount), performing a shift operation based on the target gear; the target intermediate shaft rotating speed is determined according to the current gear and the speed ratio of the transmission;
if the difference between the target intermediate shaft rotational speed and the current intermediate shaft rotational speed is greater than or equal to the intermediate shaft shift slip, continuing to reduce the intermediate shaft rotational speed through an intermediate shaft brake of the vehicle.
Step 106, executing a gear engaging operation based on the target gear;
step 107, adjusting the engine speed of the vehicle;
the engine speed regulation is to reduce the engine speed by natural friction or engine braking. The purpose of engine speed regulation is to match the engine speed with the target gear speed and reduce the impact of clutch engagement.
The adjusting the engine speed of the vehicle specifically includes:
if the difference between the engine speed and the transmission input shaft speed is smaller than the clutch coupling slip (set calibration amount), clutch coupling is controlled; wherein, the speed of the input shaft of the speed changer is determined according to the current gear and the speed changer speed ratio;
if the difference between the engine speed and the transmission input shaft speed is greater than or equal to the clutch engagement slip, the engine speed is continued to be reduced.
Step 108, controlling clutch engagement;
in step 109, control is provided to control the engine torque of the vehicle to rise.
Through the conventional vehicle upshift process, it can be seen that it takes more time to reduce the engine speed through natural friction or engine braking, so that the AMT upshift process takes more time, and the NVH index of the vehicle is further poor.
Accordingly, in order to solve the above-mentioned problems, the present disclosure provides a vehicle gear shifting method, apparatus, device and storage medium, which can shorten the time for vehicle upshift and increase the NVH level of the vehicle.
Referring first to fig. 2, which is a schematic view of an application scenario of an embodiment of the present disclosure, includes an electronic control unit (Electronic Control Unit, ECU) 21, a transmission electronic control unit (Transmission Control Unit, TCU) 22, an AMT23, and a sensor 24. The ECU13 is connected to a plurality of sensors 24 for obtaining data monitored by the sensors, such as engine torque, engine speed, intermediate shaft speed, etc. The TCU22 is connected to the ECU21 through a controller area network (Controller Area Network, CAN) bus, and communicates by sending CAN messages to each other, and the TCU22 is configured to control the AMT23 according to data obtained from the ECU21, so as to implement upshifting of the vehicle.
In the embodiment of the present disclosure, as an alternative implementation manner, the TCU22 controls the engine torque of the vehicle to be reduced in response to the upshift command sent by the ECU21, and keeps the clutch of the vehicle in a combined state, and performs the downshift operation; adjusting an engine speed and a countershaft speed of the vehicle through a countershaft brake of the vehicle, and determining a target gear by performing a gear selection operation; controlling the clutch to be separated, and executing a gear engaging operation based on the target gear; controlling the clutch to be engaged and controlling the engine torque of the vehicle to be increased.
The AMT is an automatic transmission system formed by a traditional dry friction plate clutch, a manual transmission, a TCU, a gear selecting and shifting executing mechanism and a clutch executing mechanism, wherein the automatic gear selecting and shifting function is realized by the TCU controlling the gear selecting and shifting executing mechanism, and the automatic on-off dry friction plate clutch function is realized by the TCU controlling the clutch executing mechanism. Thus, the vehicle upshift method in the present disclosure may also be applied to TCUs in AMTs.
In some embodiments, a vehicle gear shifting method provided by the present disclosure is described below by way of specific embodiments, as shown in fig. 3, including:
step 301, in response to an upshift command, controlling an engine torque of a vehicle to be reduced, and maintaining a clutch of the vehicle in a combined state, and executing an upshift operation;
the shift-off operation is an operation in which the AMT shifts from the current gear to the neutral gear.
The present disclosure may control the engine torque of the vehicle to decrease at a set first rate of change, or may control the engine torque of the vehicle to decrease in other ways.
Step 302, adjusting the engine speed and the intermediate shaft speed of the vehicle through an intermediate shaft brake of the vehicle, and determining a target gear through executing a gear selecting operation;
the gear selection is an operation of selecting a position of a target gear before a gear is engaged, and generally, a gear selection operation direction is perpendicular to a gear engagement operation direction.
Step 303, controlling the clutch to be separated, and executing a gear engaging operation based on the target gear;
the above-described gear shift is an operation of shifting the gear from the neutral gear to the target gear.
Step 304 controls the clutch to engage and controls the engine torque of the vehicle to rise.
The present disclosure may control the engine torque of the vehicle to increase at a set second rate of change, or may control the engine torque of the vehicle to increase in other ways.
According to the technical scheme provided by the embodiment of the disclosure, the engine torque of the vehicle is controlled to be reduced by responding to the upshift command, the clutch of the vehicle is kept in a combined state, and the gear shifting operation is executed. Since the clutch is in the engaged state, the present disclosure adjusts the engine speed and the intermediate shaft speed through the intermediate shaft brake of the vehicle, and determines the target gear by performing the gear selection operation, thereby shortening the time for adjusting the engine speed. And, the present disclosure controls the clutch to be disengaged and the shift-in operation to be performed based on the target gear, controls the clutch to be engaged and controls the engine torque of the vehicle to be raised, thereby realizing the vehicle upshift, and while ensuring the upshift position control accuracy, shortening the time of the vehicle upshift, and improving the system shift performance and the NVH level of the vehicle.
The following describes in detail the specific steps of the vehicle gear shifting method provided above, as shown in fig. 4, including:
step 401, in response to an upshift command, controlling an engine torque of a vehicle to be reduced and maintaining a clutch of the vehicle in an engaged state;
step 402, judging whether the engine torque is less than or equal to a set engine torque threshold, if yes, executing step 403, otherwise, executing step 401;
the above-described set engine torque threshold may be set according to actual conditions.
When the engine torque is smaller than or equal to the set engine torque threshold, the vehicle is converted from the engine dragging state to the whole vehicle dragging engine state, and the engine torque transmitted by the transmission is close to zero at the moment, so that the gear can be disengaged at the moment.
Step 403, executing a gear shifting operation;
the executing the gear-off operation specifically includes:
acquiring a first position of a current gear in real time;
if the distance between the first position and the second position where the neutral gear is located is smaller than or equal to a set first threshold value, stopping executing the gear-shifting operation, namely indicating that the gear is shifted to the position;
and if the distance between the first position and the second position where the neutral gear is located is larger than a set first threshold value, continuing to execute the gear-shifting operation.
The first threshold may be set according to actual situations.
According to the method, the position sensor is arranged at each gear, and according to the data acquired by the position sensor in real time, the first position of the current gear and the second position of the neutral gear can be acquired.
Step 404, adjusting the engine speed and the intermediate shaft speed of the vehicle through an intermediate shaft brake of the vehicle;
since the clutch is in an engaged state, the present disclosure may adjust the engine speed and the countershaft speed of the vehicle through the countershaft brake of the vehicle.
The adjusting the engine speed and the intermediate shaft speed of the vehicle through the intermediate shaft brake of the vehicle specifically comprises the following steps:
and reducing the engine speed and the intermediate shaft speed by controlling the intermediate shaft brake until the current speed of the engine is less than or equal to a set first speed threshold and the current speed of the intermediate shaft is less than or equal to a set second speed threshold.
The set first rotation speed threshold value and the set second rotation speed threshold value can be set according to actual situations. The first rotational speed threshold may be equal to the second rotational speed threshold.
Step 405, determining a target gear by executing a gear selection operation;
step 404 and step 405 in the present disclosure may be performed in parallel.
Step 406, controlling clutch disengagement;
the present disclosure decouples an engine of a vehicle from a transmission drive by controlling a clutch to disengage.
Step 407, obtaining the distance between the flywheel of the clutch and the friction plate of the clutch in real time;
according to the clutch flywheel and the clutch friction plate, the position sensors are respectively arranged at the flywheel of the clutch and the friction plate of the clutch, and according to data acquired by the position sensors in real time, the distance between the flywheel and the friction plate can be acquired.
Step 408, judging whether the distance is greater than or equal to a set distance threshold, if so, executing step 409, otherwise, executing step 406;
the set distance threshold may be set according to actual situations.
If the distance is greater than or equal to the set distance threshold, it is indicated that the clutch is completely disengaged at this time.
Step 409, executing a gear engagement operation based on the target gear;
the executing a gear engaging operation based on the target gear specifically includes:
acquiring a third position of the current gear in real time;
if the distance between the third position and the fourth position where the target gear is located is smaller than or equal to a set second threshold value, stopping executing the gear engaging operation;
and if the distance between the third position and the fourth position of the target gear is larger than a set second threshold value, continuing to execute the gear engaging operation.
Step 410, control clutch apply and control engine torque up of the vehicle.
The controlling of the engine torque rise of the vehicle includes:
controlling the engine torque to rise according to a set second rate of change;
until the engine torque is greater than or equal to a target engine torque.
Wherein the target engine torque is determined based on an accelerator pedal opening and an engine speed of the vehicle.
In some embodiments, based on the same inventive concept, the embodiments of the present disclosure further provide a vehicle gear shifting device, and since the device is a device in the method in the embodiments of the present disclosure and the principle of the device for solving the problem is similar to that of the method, the implementation of the device may refer to the implementation of the method, and the repetition is omitted.
As shown in fig. 5, the above device includes the following modules:
an off-shift module 501 for controlling the engine torque of the vehicle to decrease in response to an upshift instruction, and maintaining a clutch of the vehicle in a engaged state, and performing an off-shift operation;
an adjustment module 502 for adjusting an engine speed and a countershaft speed of the vehicle by a countershaft brake of the vehicle and determining a target gear by performing a gear selection operation;
a shift-in module 503 for controlling the clutch to be disengaged and performing a shift-in operation based on the target gear;
a control module 504 for controlling the clutch engagement and controlling the engine torque rise of the vehicle.
As an alternative embodiment, the adjustment module 502 is configured to:
and reducing the engine speed and the intermediate shaft speed by controlling the intermediate shaft brake until the current speed of the engine is less than or equal to a set first speed threshold and the current speed of the intermediate shaft is less than or equal to a set second speed threshold.
As an alternative embodiment, the shift-off module 501 is configured to:
controlling the engine torque to decrease according to a set first rate of change;
until the engine torque is less than or equal to a set engine torque threshold.
As an alternative embodiment, the shift-off module 501 is configured to:
acquiring a first position of a current gear in real time;
and if the distance between the first position and the second position where the neutral gear is located is smaller than or equal to a set first threshold value, stopping executing the gear shifting operation.
As an alternative embodiment, the gear module 503 is configured to:
acquiring the distance between the flywheel of the clutch and the friction plate of the clutch in real time;
and if the distance is greater than or equal to the set distance threshold, stopping controlling the clutch to be separated.
As an alternative embodiment, the gear module 503 is configured to:
acquiring a third position of the current gear in real time;
and if the distance between the third position and the fourth position where the target gear is located is smaller than or equal to a set second threshold value, stopping executing the gear engaging operation.
As an alternative embodiment, the control module 504 is configured to:
controlling the engine torque to rise according to a set second rate of change;
until the engine torque is greater than or equal to a target engine torque, wherein the target engine torque is determined according to an accelerator pedal opening and an engine speed of the vehicle.
In some embodiments, based on the same inventive concept, there is also provided in embodiments of the present disclosure a vehicle shifting apparatus that can implement the vehicle shifting function discussed above, please refer to fig. 6, the apparatus including a processor 601 and a memory 602, wherein the memory 602 is used to store program instructions;
the processor 601 invokes the program instructions stored in the memory by running the program instructions to implement:
in response to an upshift command, controlling an engine torque of a vehicle to decrease, and maintaining a clutch of the vehicle in a engaged state, performing an upshift operation;
adjusting an engine speed and a countershaft speed of the vehicle through a countershaft brake of the vehicle, and determining a target gear by performing a gear selection operation;
controlling the clutch to be separated, and executing a gear engaging operation based on the target gear;
controlling the clutch to be engaged and controlling the engine torque of the vehicle to be increased.
As an alternative embodiment, the adjusting the engine speed and the intermediate shaft speed of the vehicle by the intermediate shaft brake of the vehicle includes:
and reducing the engine speed and the intermediate shaft speed by controlling the intermediate shaft brake until the current speed of the engine is less than or equal to a set first speed threshold and the current speed of the intermediate shaft is less than or equal to a set second speed threshold.
As an alternative embodiment, the controlling the engine torque reduction of the vehicle includes:
controlling the engine torque to decrease according to a set first rate of change;
until the engine torque is less than or equal to a set engine torque threshold.
As an alternative embodiment, the performing the shift-out operation includes:
acquiring a first position of a current gear in real time;
and if the distance between the first position and the second position where the neutral gear is located is smaller than or equal to a set first threshold value, stopping executing the gear shifting operation.
As an alternative embodiment, the controlling the clutch to be disengaged includes:
acquiring the distance between the flywheel of the clutch and the friction plate of the clutch in real time;
and if the distance is greater than or equal to the set distance threshold, stopping controlling the clutch to be separated.
As an optional embodiment, the performing a gear shift operation based on the target gear shift includes:
acquiring a third position of the current gear in real time;
and if the distance between the third position and the fourth position where the target gear is located is smaller than or equal to a set second threshold value, stopping executing the gear engaging operation.
As an alternative embodiment, the controlling the engine torque rise of the vehicle includes:
controlling the engine torque to rise according to a set second rate of change;
until the engine torque is greater than or equal to a target engine torque, wherein the target engine torque is determined according to an accelerator pedal opening and an engine speed of the vehicle.
In some possible implementations, aspects of the present disclosure may also be implemented in the form of a program product 700, as shown in fig. 7, comprising computer program code which, when run on a computer, causes the computer to perform a vehicle shift method as any of the preceding discussion. Since the principle of solving the problem by the computer program product is similar to that of the vehicle gear shifting method, the implementation of the computer program product can refer to the implementation of the vehicle gear shifting method, and the repetition is omitted.
It will be apparent to those skilled in the art that embodiments of the present disclosure may be provided as a method, system, or computer program product. Accordingly, the present disclosure may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present disclosure may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, magnetic disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present disclosure is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the disclosure. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any adaptations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It is to be understood that the present disclosure is not limited to the precise arrangements and instrumentalities shown in the drawings, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (10)
1. A vehicle shift method, the method comprising:
in response to an upshift command, controlling an engine torque of a vehicle to decrease, and maintaining a clutch of the vehicle in a engaged state, performing an upshift operation;
adjusting an engine speed and a countershaft speed of the vehicle through a countershaft brake of the vehicle, and determining a target gear by performing a gear selection operation;
controlling the clutch to be separated, and executing a gear engaging operation based on the target gear;
controlling the clutch to be engaged and controlling the engine torque of the vehicle to be increased.
2. The method of claim 1, wherein said adjusting the engine speed and the intermediate shaft speed of the vehicle by the intermediate shaft brake of the vehicle comprises:
and reducing the engine speed and the intermediate shaft speed by controlling the intermediate shaft brake until the current speed of the engine is less than or equal to a set first speed threshold and the current speed of the intermediate shaft is less than or equal to a set second speed threshold.
3. The method of claim 1, wherein controlling the engine torque reduction of the vehicle comprises:
controlling the engine torque to decrease according to a set first rate of change;
until the engine torque is less than or equal to a set engine torque threshold.
4. The method of claim 1, wherein the performing an off-shift operation comprises:
acquiring a first position of a current gear in real time;
and if the distance between the first position and the second position where the neutral gear is located is smaller than or equal to a set first threshold value, stopping executing the gear shifting operation.
5. The method of claim 1, wherein said controlling said clutch release comprises:
acquiring the distance between the flywheel of the clutch and the friction plate of the clutch in real time;
and if the distance is greater than or equal to the set distance threshold, stopping controlling the clutch to be separated.
6. The method of claim 1, wherein the performing a shift up operation based on the target shift position comprises:
acquiring a third position of the current gear in real time;
and if the distance between the third position and the fourth position where the target gear is located is smaller than or equal to a set second threshold value, stopping executing the gear engaging operation.
7. The method of claim 1, wherein said controlling the engine torque of the vehicle to rise comprises:
controlling the engine torque to rise according to a set second rate of change;
until the engine torque is greater than or equal to a target engine torque, wherein the target engine torque is determined according to an accelerator pedal opening and an engine speed of the vehicle.
8. A vehicle shift apparatus characterized by comprising:
the gear shifting module is used for responding to the gear shifting instruction, controlling the engine torque of the vehicle to be reduced, keeping the clutch of the vehicle in a combined state and executing gear shifting operation;
the adjusting module is used for adjusting the engine speed and the intermediate shaft speed of the vehicle through the intermediate shaft brake of the vehicle and determining a target gear through executing gear selection operation;
the gear shifting module is used for controlling the clutch to be separated and executing gear shifting operation based on the target gear;
a control module for controlling the clutch engagement and controlling the engine torque rise of the vehicle.
9. An apparatus, comprising: a processor; a memory for storing processor-executable instructions; wherein the processor implements the steps of the method of any one of claims 1 to 7 by executing the executable instructions.
10. A computer readable and writable storage medium, on which computer instructions are stored which when executed by a processor implement the steps of the method of any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310763138.6A CN116857360A (en) | 2023-06-27 | 2023-06-27 | Vehicle gear shifting method, device, equipment and storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310763138.6A CN116857360A (en) | 2023-06-27 | 2023-06-27 | Vehicle gear shifting method, device, equipment and storage medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116857360A true CN116857360A (en) | 2023-10-10 |
Family
ID=88220826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310763138.6A Pending CN116857360A (en) | 2023-06-27 | 2023-06-27 | Vehicle gear shifting method, device, equipment and storage medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116857360A (en) |
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2023
- 2023-06-27 CN CN202310763138.6A patent/CN116857360A/en active Pending
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