CN110778705A - Transmission parking control method and system, vehicle and storage medium - Google Patents
Transmission parking control method and system, vehicle and storage medium Download PDFInfo
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- CN110778705A CN110778705A CN201910974425.5A CN201910974425A CN110778705A CN 110778705 A CN110778705 A CN 110778705A CN 201910974425 A CN201910974425 A CN 201910974425A CN 110778705 A CN110778705 A CN 110778705A
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- gear
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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
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H63/34—Locking or disabling mechanisms
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Transmission Device (AREA)
Abstract
The invention relates to the technical field of vehicles, and discloses a transmission parking control method, a transmission parking control system, a vehicle and a storage medium. The parking control method of the transmission comprises the steps of obtaining real-time information of gears and gear change information, and setting an initial position of a released torque state to be 0; if the driver directly engages the gear P from the gear D or the gear R, replacing the released torque state position from 0 to 1, accumulating time and then performing torque release operation; and if the torque release acting time is equal to the release torque time limit or the turbine speed is greater than or equal to the turbine speed limit, replacing the release torque state bit from 1 to 0, and engaging the gear P. The invention also discloses a transmission parking control system, a vehicle and a storage medium. According to the invention, the torque on the transmission shaft is released before the P gear is engaged, so that the impact phenomenon when the P gear is engaged is effectively avoided, and the riding experience and the comfort of a vehicle are improved.
Description
Technical Field
The invention relates to the technical field of vehicles, in particular to a transmission parking control method, a transmission parking control system, a vehicle and a storage medium.
Background
Before the P-gear parking process of the vehicle, if the gear of the transmission is in the D gear or the R gear, the torque of the engine is stored in the whole transmission shaft; if the torque on the transmission shaft cannot be released before the P gear is engaged, a certain torque exists between the transmission shaft and wheels in the parking mechanism inside the transmission after the P gear is parked.
When the parking is kept off to the actual P of vehicle, have very big probability parking pawl and paste tight parking ratchet just, at this moment, the parking pawl can bear certain pressure because the epaxial moment of torsion of transmission, and the driver can experience the impact that the vehicle exists the certain degree when causing to withdraw from P to keep off, influences the driving experience.
Disclosure of Invention
Based on the above, the invention aims to provide a transmission parking control method, a transmission parking control system, a vehicle and a storage medium, so that the impact feeling of the vehicle when the P gear is engaged is eliminated, and the comfort level of the whole vehicle is improved.
In order to achieve the purpose, the invention adopts the following technical scheme that:
acquiring real-time gear information and gear change information, and setting an initial position of a release torque state to be 0;
if the driver directly engages the gear P from the gear D or the gear R, replacing the released torque state position from 0 to 1, accumulating time and then performing torque release operation;
and if the torque release acting time is equal to the release torque time limit or the turbine speed is greater than or equal to the turbine speed limit, replacing the release torque state bit from 1 to 0, and engaging the gear P.
As a preferable mode of the transmission parking control method, before replacing the released torque state bit from 0 to 1 and performing the time integration operation, the method further includes: receiving slope road value information and position information of a brake pedal;
if the slope value is smaller than the limit value of the slope value or the brake pedal is positioned at the brake position, replacing the release torque state position from 0 to 1, accumulating time and then performing torque release operation;
if the slope road value is greater than or equal to the slope road value limit value and the brake pedal is not in the brake position, the gear P is directly engaged.
As a preferable mode of the transmission parking control method, when the driver does not directly engage the P range from the D range or the R range, it is determined whether the released torque state bit is 1;
if the release torque state bit is not 1, whether the driver directly engages the P gear from the D gear or the R gear is judged again.
As a preferable scheme of the transmission parking control method, if the release torque state bit is 1, firstly, the values of the torque release action time and the turbine speed are judged;
and if the torque release acting time is not equal to the torque release time limit value and the turbine rotating speed is less than the turbine rotating speed limit value, the gear is placed in the N gear, the counter starts counting, and whether the driver is directly engaged in the P gear from the D gear or the R gear is judged again.
As a preferred option for the transmission parking control method, the torque-released state may be neutral or other torque-releasable gear position.
As a preferable scheme of the transmission parking control method, the release torque time limit value is 0.1s-1 s.
As a preferable scheme of the transmission parking control method, the turbine speed limit value is 100rpm-600rpm lower than the idle speed of the engine.
A transmission park control system comprising:
the transmission parking mechanism is used for realizing parking;
the processing module is used for receiving information of a P gear engaging command of a driver, information of an actual gear and information of turbine rotation speed in real time so as to generate signals related to the transmission parking control method according to any scheme;
and the output module is used for outputting an execution control signal to realize the transmission parking control method according to any one of the schemes.
A vehicle, comprising:
one or more processors;
a memory for storing one or more programs;
the one or more programs, when executed by the one or more processors, cause the one or more processors to implement a transmission park control method as recited in any of the above aspects.
A computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements a transmission park control method as recited in any of the above aspects.
The invention has the beneficial effects that: the torque on the transmission shaft is released before the P gear is engaged, so that the impact phenomenon when the P gear is engaged is avoided, and the riding experience is not influenced; the torque is completely released or not by judging the torque release acting time and the turbine speed, specifically, the P gear is engaged when the torque release acting time is equal to a release torque time limit value (Coun _ Ntop ═ Lim _ Ntop) or the turbine speed is greater than or equal to a turbine speed limit value (the turbine speed is greater than or equal to Para _ RevTur), at the moment, the torque on the transmission shaft is released, and then the impact phenomenon can not occur when the P gear is engaged, so that the comfort level of the whole vehicle is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.
FIG. 1 is a flow chart of a transmission park control method provided by an embodiment of the present invention;
FIG. 2 is a schematic diagram of a transmission park control system provided in accordance with an embodiment of the present invention.
Detailed Description
In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, the present embodiment provides a transmission parking control method, system, vehicle and storage medium, which are used for parking a vehicle in a P-gear, and can release torque on a transmission shaft before the P-gear is engaged, so that vehicle impact is eliminated when the P-gear is engaged, and the comfort of the entire vehicle is improved.
The transmission parking control method comprises the steps of acquiring real-time information of gears and gear change information, and setting an initial position of a released torque state to be 0; if the driver directly engages the gear P from the gear D or the gear R, the release torque state bit is replaced by 1 from 0 (the release torque state bit is equal to 1), the torque release acting time is set to 0(Coun _ NtoP is equal to 0), and then the torque release operation is performed; if the torque release on time (Coun _ NtoP) is equal to the release torque time limit (Lim _ NtoP) or the turbine speed is greater than or equal to the turbine speed limit (Para _ RevTur), the release torque state bit is replaced from 1 to 0, and the P range is engaged (commanded gear position is P).
The transmission parking control method releases the torque on the transmission shaft before the P gear is engaged, so that the impact phenomenon when the P gear is engaged is avoided, and the riding experience is not influenced; the torque is completely released or not by judging the torque release acting time and the turbine speed, specifically, the P gear is engaged when the torque release acting time is equal to a release torque time limit value (Coun _ Ntop ═ Lim _ Ntop) or the turbine speed is greater than or equal to a turbine speed limit value (the turbine speed is greater than or equal to Para _ RevTur), at the moment, the torque on the transmission shaft is released, and then the impact phenomenon can not occur when the P gear is engaged, so that the comfort level of the whole vehicle is improved.
Preferably, in order to enable the transmission parking control method to be applied to the situation that the vehicle needs to be put into the P gear under the conditions that the slope road value is large and the vehicle is not in a braking state, the transmission parking control method also needs to receive slope road value information (Slo) and position information of a brake pedal in real time; if the slope road value is smaller than the slope road value limit value (SloLim) or the brake pedal is in the brake position (the brake state is 1), replacing the release torque state position from 0 to 1; if the slope road value is greater than or equal to the slope road value limit value and the brake pedal is not in the brake position, the gear P is directly engaged. By judging the information of the slope road value and the position information of the brake pedal, the situation that the vehicle slips or slides when the slope road value is larger than the limit value of the slope road value and the torque is released by the transmission parking control method under the condition that the vehicle is not in a braking state is effectively avoided, and the parking safety is ensured.
Further preferably, when the driver does not directly engage the gear P from the gear D or the gear R, whether the release torque state bit is 1 is judged; if the release torque state bit is not 1, whether the driver directly engages the P gear from the D gear or the R gear is judged again.
If the release torque state bit is 1, performing torque release operation, and judging the torque release action time and the numerical value of the turbine rotating speed;
if the torque release action time is equal to the release torque time limit or the turbine speed is greater than or equal to the turbine speed limit, replacing the release torque state bit from 1 to 0, and engaging the gear P;
and if the torque release acting time is not equal to the torque release time limit value and the turbine rotating speed is less than the turbine rotating speed limit value, the gear is placed in the N gear, the counter starts counting, and whether the driver is directly engaged in the P gear from the D gear or the R gear is judged again after Tcyc time.
In the above-described transmission parking control method, specifically, the released torque state may be a neutral gear or other torque-releasable gear position. The release torque time limit is 0.1s-1 s. The turbine speed limit is 100rpm to 600rpm less than the engine idle speed.
Example two
As shown in fig. 2, the present embodiment further discloses a transmission parking control system that can adopt the transmission parking control method, including a transmission parking mechanism, a processing module, and an output module. The transmission parking mechanism is used for realizing parking; the processing module is used for acquiring real-time gear information and gear change information to generate signals related to the transmission parking control method according to any scheme; the output module is used for outputting an execution control signal to realize the transmission parking control method according to any one of the schemes.
The transmission parking control system can realize the function of releasing the torque before the P gear is engaged according to whether a driver directly engages the P gear through the D gear or the R gear and the torque time limit value and the turbine rotating speed limit value, so that no impact is caused when the P gear is engaged, and the riding experience and comfort of a vehicle are improved.
EXAMPLE III
The embodiment also discloses a vehicle with the transmission parking control system and adopting the transmission parking control method, which comprises one or more processors; a memory for storing one or more programs; the one or more programs, when executed by the one or more processors, cause the one or more processors to implement the transmission park control method as described above.
The user drives or takes this vehicle, when needing P to keep off the parking, need not through the operation of other release moments of torsion, directly hang into P keep off can, can not appear strikeing phenomenon when putting into P and keeping off, experience sense and comfort level are better.
The memory, which is a computer-readable storage medium, may be used to store software programs, computer-executable programs, and modules. The memory can mainly comprise a program storage area and a data storage area, wherein the program storage area can store an operating system and an application program required by at least one function; the storage data area may store data created according to the use of the terminal, and the like. Further, the memory may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device. In some examples, the memory may further include memory located remotely from the processor, which may be connected to the device/terminal/server via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
Example four
The present embodiment also discloses a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements a transmission park control method as described above, the method comprising:
acquiring real-time gear information and gear change information, and setting an initial position of a release torque state to be 0;
if the driver directly engages the gear P from the gear D or the gear R, replacing the released torque state position from 0 to 1, accumulating time and then performing torque release operation;
and if the torque release acting time is equal to the release torque time limit or the turbine speed is greater than or equal to the turbine speed limit, replacing the release torque state bit from 1 to 0, and engaging the gear P.
Of course, the storage medium provided by the embodiment of the present invention contains computer-executable instructions, and the computer-executable instructions are not limited to the method operations described above, and may also perform related operations in the method provided by any embodiment of the present invention.
From the above description of the embodiments, it is obvious for those skilled in the art that the present invention can be implemented by software and necessary general hardware, and certainly, can also be implemented by hardware, but the former is a better embodiment in many cases. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which may be stored in a computer-readable storage medium, such as a floppy disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a FLASH Memory (FLASH), a hard disk or an optical disk of a computer, and includes several instructions for enabling a computer device (which may be a personal computer, a server, or a network device) to execute the methods according to the embodiments of the present invention.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A transmission parking control method characterized by comprising:
acquiring real-time gear information and gear change information, and setting an initial position of a release torque state to be 0;
if the driver directly engages the gear P from the gear D or the gear R, replacing the released torque state position from 0 to 1, accumulating time and then performing torque release operation;
and if the torque release acting time is equal to the release torque time limit or the turbine speed is greater than or equal to the turbine speed limit, replacing the release torque state bit from 1 to 0, and engaging the gear P.
2. The transmission park control method of claim 1, wherein replacing the released torque state bit from 0 to 1 and prior to performing the time accumulation operation further comprises: receiving slope road value information and position information of a brake pedal;
if the slope value is smaller than the limit value of the slope value or the brake pedal is positioned at the brake position, replacing the release torque state position from 0 to 1, accumulating time and then performing torque release operation;
if the slope road value is greater than or equal to the slope road value limit value and the brake pedal is not in the brake position, the gear P is directly engaged.
3. The transmission parking control method according to claim 1, characterized in that, when the driver is not directly engaging the P range from the D range or the R range, it is determined whether the released torque state bit is 1;
if the release torque state bit is not 1, whether the driver directly engages the P gear from the D gear or the R gear is judged again.
4. The transmission parking control method according to claim 3, wherein if the release torque state bit is 1, first, the values of the torque release action time and the turbine speed are determined;
and if the torque release acting time is not equal to the torque release time limit value and the turbine rotating speed is less than the turbine rotating speed limit value, the gear is placed in the N gear, the counter starts counting, and whether the driver is directly engaged in the P gear from the D gear or the R gear is judged again.
5. The transmission park control method of any of claims 1-4, where the released torque state may be neutral or other torque-releasable gear position.
6. The transmission park control method of any of claims 1-4, wherein the release torque time limit is 0.1s-1 s.
7. The transmission park control method of any of claims 1-4, wherein the turbine speed limit is 100rpm to 600rpm less than an engine idle speed.
8. A transmission park control system, comprising:
the transmission parking mechanism is used for realizing parking;
a processing module for receiving in real time driver engagement in P range command information, actual gear information and turbine speed information to generate signals relating to the transmission park control method according to any one of claims 1-7;
an output module for outputting an execution control signal to implement the transmission park control method of any of claims 1-7.
9. A vehicle, characterized in that the vehicle comprises:
one or more processors;
a memory for storing one or more programs;
the one or more programs, when executed by the one or more processors, cause the one or more processors to implement the transmission park control method of any of claims 1-7.
10. A computer-readable storage medium, on which a computer program is stored, which program, when being executed by a processor, is adapted to carry out a transmission parking control method according to any one of claims 1-7.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910974425.5A CN110778705B (en) | 2019-10-14 | 2019-10-14 | Transmission parking control method and system, vehicle and storage medium |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910974425.5A CN110778705B (en) | 2019-10-14 | 2019-10-14 | Transmission parking control method and system, vehicle and storage medium |
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| Publication Number | Publication Date |
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| CN110778705A true CN110778705A (en) | 2020-02-11 |
| CN110778705B CN110778705B (en) | 2021-04-16 |
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| CN201910974425.5A Active CN110778705B (en) | 2019-10-14 | 2019-10-14 | Transmission parking control method and system, vehicle and storage medium |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111828626A (en) * | 2020-07-22 | 2020-10-27 | 中国第一汽车股份有限公司 | Automatic transmission parking control method and system matched with electronic gear shifter and vehicle |
| CN112065990A (en) * | 2020-08-12 | 2020-12-11 | 东风小康汽车有限公司重庆分公司 | Vehicle parking control method and device |
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| CN108791277A (en) * | 2017-04-28 | 2018-11-13 | 丰田自动车株式会社 | The control device of vehicle |
| CN109747433A (en) * | 2018-12-29 | 2019-05-14 | 中国第一汽车股份有限公司 | A kind of electric car P gear control method |
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| CN105697762A (en) * | 2014-11-28 | 2016-06-22 | 上海汽车集团股份有限公司 | Impact prevention method and device in parking gear switching process |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111828626A (en) * | 2020-07-22 | 2020-10-27 | 中国第一汽车股份有限公司 | Automatic transmission parking control method and system matched with electronic gear shifter and vehicle |
| CN111828626B (en) * | 2020-07-22 | 2022-04-12 | 中国第一汽车股份有限公司 | Automatic transmission parking control method and system matched with electronic gear shifter and vehicle |
| CN112065990A (en) * | 2020-08-12 | 2020-12-11 | 东风小康汽车有限公司重庆分公司 | Vehicle parking control method and device |
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| CN110778705B (en) | 2021-04-16 |
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