CN111457083A - Automatic gear shifting control method and system and automobile - Google Patents
Automatic gear shifting control method and system and automobile Download PDFInfo
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- CN111457083A CN111457083A CN202010192562.6A CN202010192562A CN111457083A CN 111457083 A CN111457083 A CN 111457083A CN 202010192562 A CN202010192562 A CN 202010192562A CN 111457083 A CN111457083 A CN 111457083A
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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
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/02—Selector apparatus
- F16H59/08—Range selector apparatus
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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
- F16H61/02—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 characterised by the signals used
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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
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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
- F16H63/42—Ratio indicator devices
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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
- F16H63/42—Ratio indicator devices
- F16H2063/423—Range indicators for automatic transmissions, e.g. showing selected range or mode
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Abstract
The invention discloses an automatic gear shifting control method, an automatic gear shifting control system and an automobile, wherein the control method comprises the following steps: acquiring road condition information of the vehicle in the next time period; acquiring a vehicle speed value of a vehicle in the current time period; pre-judging the vehicle condition information of the vehicle at the next time period according to the road condition information of the vehicle at the next time period, wherein the vehicle condition information of the vehicle at the next time period at least comprises a vehicle speed value of the vehicle at the next time period; judging whether the gear shifting requirement is met or not according to the vehicle condition information of the next time period and the vehicle speed value of the current time period; when the gear shifting requirement is met, a gear shifting instruction is obtained; calculating the optimal gear shifting time according to the vehicle condition information of the next time period and the road condition information of the next time period; and controlling a gear shifting mechanism to execute gear shifting according to the gear shifting command and the optimal gear shifting time. The invention can acquire the vehicle condition information of the vehicle at the next period in advance so as to shift gears in time, control the rotating speed of the engine within the range of low energy consumption, and improve the fuel economy performance, the driving performance and the vehicle safety performance of the vehicle.
Description
Technical Field
The invention relates to the technical field of vehicle management, in particular to an automatic gear shifting control method, an automatic gear shifting control system and an automobile.
Background
In order to follow the world automobile technology and develop the automobile industry in China, the electronic control technology of the automobile is listed as a scientific and technological attack project during the period of 'nine five'. Automatic vehicle speed change is an important component of automobile electric control technology. The automatic speed change of the vehicle is realized by adopting a computer and an electric power electronic driving technology, the difference of the gear shifting technology of a driver can be eliminated, the labor intensity of the driver is reduced, the driving safety is improved, and the dynamic property and the economical efficiency of the vehicle are improved. The gear shifting principle of the transmission is related to the vehicle speed, when the vehicle speed sensor feeds the instant vehicle speed back to a TCU (Transmission Control Unit) automatic gearbox Control unit, the TCU carries out gear shifting Control according to the received vehicle speed.
When the vehicle actually runs, the throttle opening of the engine is larger only during acceleration, and in most cases, the vehicle only moves at a constant speed, and the power of the engine is not large at the moment, so that the throttle opening of the engine is smaller. As is apparent from the unique characteristics of the engine, when the accelerator opening is small, the fuel consumption of the engine is large, which not only reduces the fuel economy of the vehicle, but also increases the exhaust gas discharged from the engine. Therefore, the load factor can be improved by changing gears, and the engine can work in a low oil consumption area as much as possible, thereby achieving the purpose of saving oil. When the acceleration is too fast, the engine rotating speed is too high and the oil consumption is too high because the gear is not timely changed into a proper gear. It is then necessary to find a shift schedule that will reduce fuel consumption under normal driving conditions.
Disclosure of Invention
In order to solve the technical problems, aiming at the problems, the invention provides an automatic gear shifting control method, an automatic gear shifting control system and an automobile aiming at the conditions that the speed is acquired by a speed sensor slowly, and the engine speed is overhigh and the oil consumption is overhigh due to the fact that the speed is not converted into a proper gear in time when the speed is accelerated or decelerated excessively fast in the prior art.
In order to achieve the above object of the invention, the present invention provides an automatic shift control method including:
acquiring road condition information of the vehicle in the next time period;
acquiring a vehicle speed value of a vehicle in the current time period;
pre-judging the vehicle condition information of the vehicle at the next time period according to the road condition information of the vehicle at the next time period, wherein the vehicle condition information of the vehicle at the next time period at least comprises a vehicle speed value of the vehicle at the next time period;
judging whether the gear shifting requirement is met or not according to the vehicle condition information of the next time period and the vehicle speed value of the current time period;
when the gear shifting requirement is met, a gear shifting instruction is obtained;
calculating the optimal gear shifting time according to the vehicle condition information of the next time period and the road condition information of the next time period;
and controlling a gear shifting mechanism to execute gear shifting according to the gear shifting command and the optimal gear shifting time.
Further, the acquiring the road condition information of the vehicle in the next time period includes acquiring at least road condition information of road surface type, driving distance and gradient of the vehicle in the next time period.
Further, the determining whether the shift demand is satisfied includes:
judging whether the current time period vehicle speed value and the next time period vehicle speed value of the vehicle are in the same gear;
if so, maintaining the current gear of the vehicle;
if not, judging upshifting or downshifting according to the current time period vehicle speed value and the next time period vehicle speed value;
when the gear of the current time period vehicle speed value is lower than the gear of the vehicle of the next time period vehicle speed value, the gear is shifted up;
and when the gear of the vehicle speed value in the current time period is higher than the gear of the vehicle in the next time period, performing downshift.
4. The automatic gear shifting control method according to claim 3, characterized in that further, optimal vehicle speed intervals corresponding to different gears of the vehicle are set according to fuel consumption or vehicle power performance, and the gears cannot be adjusted, input or selected to exceed the limit range of the optimal vehicle speed intervals.
Further, the calculating the optimal shift time includes:
when the current road is in a downhill slope, the speed is in an ascending state and the gear shifting requirement is met, gear shifting needs to be carried out in advance by T1 time, and the optimal gear shifting time is calculated to be T-T1;
when the current road is in a downhill slope, the speed is in a deceleration state and the gear shifting requirement is met, calculating the optimal gear shifting time to be T + T1;
when the current road is on an uphill slope and the speed is in a rising state and meets the gear shifting requirement, the gear shifting needs to be carried out by delaying the time T2, and the optimal gear shifting time is calculated to be T + T2;
when the current road is on an uphill slope, the speed is in a deceleration state and the gear shifting requirement is met, the optimal gear shifting time is calculated to be T-T2.
Further, T is a preset automatic shift time, T1 is a preset first shift differential time, and T2 is a preset second shift differential time.
Further, the step of obtaining the road condition information of the vehicle in the next time period further comprises obtaining climate information, and when the obtained climate information is rainy days, snowy days or foggy days, the climate information is combined to advance or delay a certain time on the preset automatic gear shifting time so as to find the optimal gear shifting time.
The present invention also provides an automatic shift control system, comprising:
the parameter acquisition module is used for acquiring road condition information of the vehicle in the next time period and acquiring a vehicle speed value of the vehicle in the current time period;
the prediction module is used for predicting the vehicle condition information of the vehicle in the next time period;
the judging module is used for judging whether the gear shifting requirement is met according to the vehicle condition information of the next time period and the vehicle speed value of the current time period;
the command acquisition module is used for acquiring a gear shifting command;
the calculating module is used for calculating the optimal gear shifting time according to the vehicle condition information and the road condition information in the next period;
and the control module is used for controlling the gear shifting mechanism to execute gear shifting according to the gear shifting command and the optimal gear shifting time.
Furthermore, the control module adopts hydraulic automatic control or electronic automatic control to control the gear shifting mechanism to realize automatic gear shifting.
The invention also provides an automobile comprising the automatic gear shifting control system, and the control system applies the automatic gear shifting control method.
The embodiment of the invention has the following beneficial effects:
(1) the invention can prejudge the vehicle speed information of the vehicle in the next period in advance, shift gears in time, control the rotating speed of the engine within the range of low energy consumption and prevent the problem of overhigh oil consumption.
(2) The invention integrates the gradient problem with automatic gear shifting, provides a calculation method of the optimal gear shifting time on a gradient road section, combines the actual road condition, moderately advances and delays the gear shifting time, and shifts gears at the optimal gear shifting time.
(3) The invention obtains the speed information in advance, improves the response time of the transmission gear, and improves the fuel economy performance, the driving performance and the vehicle safety performance of the vehicle.
Drawings
In order to more clearly illustrate the method and apparatus for displaying the power of the mobile terminal by the vehicle meter according to the present invention, the drawings required for the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic flow chart of an automatic shift control method according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart illustrating the determination of whether the shift request is satisfied according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a vehicle shift schedule provided in an embodiment of the present invention;
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or server that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Examples
An embodiment of the present invention provides an automatic gear shifting control method, as shown in fig. 1, the method includes:
and S001, acquiring road condition information of the vehicle in the next time period.
Specifically, in some embodiments, the road condition information at least includes road condition information of a road surface type, a driving distance and a gradient of the vehicle in a next time period. The information may also include the climate in which the vehicle is traveling, position information, whether to turn a corner, and the like. In some embodiments, the information may also be obtained by an intelligent driving system of the vehicle, that is, the road condition information is rapidly obtained in combination with the intelligent driving system.
And S002, acquiring the vehicle speed value of the vehicle in the current time period.
Specifically, the obtaining of the vehicle speed value at the current time period of the vehicle includes obtaining the vehicle speed value and the gear information of the current road section of the vehicle in real time through a speed measurement system of the vehicle during the running process of the vehicle, and in some embodiments, the current gear may be determined according to the current accelerator opening and the vehicle speed value.
And S003, pre-judging the vehicle condition information of the vehicle at the next time period according to the road condition information of the next time period, wherein the vehicle condition information of the next time period at least comprises a vehicle speed value of the vehicle at the next time period.
Specifically, in the embodiment of the present invention, the vehicle condition information of the next time period of the vehicle is predicted according to the road condition information, that is, the information of the road surface, the driving distance, the position information, the gradient, the turning and the like of the vehicle in the next time period, which is acquired in advance, and the vehicle condition information at least includes the vehicle speed value of the vehicle in the next time period, and in some embodiments, also includes the acceleration value of the vehicle.
And S004, judging whether the gear shifting requirement is met according to the vehicle condition information of the next time period and the vehicle speed value of the current time period.
Specifically, as shown in fig. 2, the determining whether the shift demand is satisfied includes:
s041, judging whether the vehicle speed value in the current time period and the vehicle speed value in the next time period are in the same gear;
s042, if yes, maintaining the current gear of the vehicle;
if not, judging to upshift or downshift according to the current time period vehicle speed value and the next time period vehicle speed value;
s044, when the gear of the vehicle speed value in the current period is lower than the gear of the vehicle in the next period, the vehicle is shifted up;
s045, when the gear of the vehicle speed value in the current time period is higher than the gear of the vehicle in the next time period, performing downshift;
specifically, in some embodiments, it is simpler to use only vehicle speed as a shift control parameter, e.g., upshift to 2 when vehicle speed reaches v 2; conversely, when the vehicle speed is reduced to v1, the gear is shifted back to 1, and v1 is smaller than v 2. Where v1, v2 are shift vehicle speed values of shift schedules set in advance according to vehicle dynamics, economy, and the like. The set gear shifting rule has the advantages that no matter how the accelerator opening degree changes, the gear shifting point and the gear shifting delay are not changed, the intervention gear shifting of a driver cannot be realized, the noise is high, and in order to ensure the dynamic property, the gear shifting point is designed at the maximum rotating speed of the engine. This causes the opening degree of the middle and small throttle to shift as soon as the maximum rotation speed of the engine, which results in greatly reduced fuel economy.
In other embodiments, as shown in the schematic diagram of the vehicle shift schedule with two parameters shown in fig. 3, the two parameters of the vehicle speed and the accelerator opening are used as the shift control parameters in the shift curves with different accelerator openings and vehicle speeds, so that the problem of unmatched dynamic performance and economy of the single-parameter shift schedule is solved, excessive shifting is avoided, the engine can work at a low rotation speed, the fuel economy is good, the noise is low, and the running is stable and comfortable. The vehicle speed interval between each gear from the low gear to the other gear in the figure is the optimal vehicle speed interval of the vehicle, for example, 20km/h-40km/h is the optimal vehicle speed interval for the second gear running of the vehicle, and more than 40km/h should be increased to the third gear running. Specifically, the optimal vehicle speed interval corresponding to different gears of the vehicle is set according to the fuel consumption or the vehicle power performance, and the gears cannot be adjusted, input or selected to exceed the limit range of the optimal vehicle speed interval.
And S005, acquiring a gear shifting command when the gear shifting requirement is met.
And S006 calculates the optimal gear shifting time according to the vehicle condition information of the next time interval and the road condition information of the next time interval.
Specifically, the calculating the optimal shift time includes:
s061, when the current road is in a downhill state, the speed is in an ascending state and the gear shifting requirement is met, gear shifting needs to be carried out in advance for T1 time, and the optimal gear shifting time is calculated to be T-T1;
s062, when the current road is in a downhill slope, the speed is in a deceleration state and the gear shifting requirement is met, calculating the optimal gear shifting time to be T + T1;
s063, when the current road is on an uphill slope, the speed is in a rising state and the gear shifting requirement is met, delaying T2 time for gear shifting, and calculating the optimal gear shifting time to be T + T2;
s064, when the current road is on an uphill slope, the speed is in a deceleration state and the gear shifting requirement is met, the optimal gear shifting time is calculated to be T-T2.
In the embodiment of the invention, T is a preset automatic shift time, T1 is a preset first shift differential time, and T2 is a preset second shift differential time. The first gear shifting difference time and the second gear shifting difference time are gear shifting advance or delay time preset according to the slope values of the uphill slope and the downhill slope of the current vehicle, the vehicle running safety factor and the like. For example, in some embodiments, the preset automatic shift time T is 600ms, and when the vehicle is in a downhill state and the speed is in an uphill state, a shift is performed in advance, the first shift difference time T1 may be set to 100ms, and the optimal shift time may be calculated to be 500 ms. According to the above, in the embodiment of the invention, the optimal gear shifting time of the vehicle running on the slope is calculated by introducing the road condition change of the slope, so that the vehicle is always ensured to run at the optimal gear.
And S007 controls the gear shifting mechanism to execute gear shifting according to the gear shifting command and the optimal gear shifting time.
Specifically, under the condition that the gear shifting requirement is met, the TCU control unit of the vehicle controls a gear shifting mechanism to execute gear shifting according to a gear shifting command sent by a system and the optimal gear shifting time, and in some embodiments, the gear shifting mechanism is an automatic gear shifting box.
The automatic gear shifting control method further comprises the step of advancing or delaying the preset automatic gear shifting time by combining weather and actual road condition information when the acquired road condition information is rainy days, snowy days or foggy days, so as to find the optimal gear shifting time.
The invention also provides an automatic gear shifting control system, comprising;
and the parameter acquisition module is used for acquiring the road condition information of the vehicle in the next time period and acquiring the vehicle speed value of the vehicle in the current time period.
Specifically, the parameter obtaining module includes:
the first parameter acquisition unit is used for acquiring road condition information of the vehicle in the next time period, and comprises road condition information of at least the road surface type, the driving distance and the gradient of the vehicle in the next time period;
and the second parameter acquisition unit is used for acquiring the vehicle speed value of the vehicle in the current time period.
And the prediction module is used for predicting the vehicle condition information of the vehicle in the next time period.
Specifically, the vehicle condition information of the next time period at least comprises a vehicle speed value of the vehicle in the next time period.
And the judging module is used for judging whether the gear shifting requirement is met according to the vehicle condition information of the next time period and the vehicle speed value of the current time period.
Specifically, the judging module includes:
the first judgment unit is used for judging whether the vehicle speed value in the current time period and the vehicle speed value in the next time period are in the same gear;
and a second determination unit for determining whether the vehicle should be upshifted or downshifted before the vehicle travels to a next time period.
The command acquisition module is used for acquiring a gear shifting command.
And the calculating module is used for calculating the optimal gear shifting time according to the vehicle condition information of the next time period and the road condition information of the next time period.
And the control module is used for controlling the gear shifting mechanism to execute gear shifting according to the gear shifting command and the optimal gear shifting time.
Specifically, the parameter acquisition module is sequentially connected with the prediction module, the judgment module, the instruction acquisition module, the calculation module and the control module, and the control module controls the gear shifting mechanism to execute gear shifting according to a gear shifting instruction sent by a system and the optimal gear shifting time under the condition of meeting the gear shifting requirement.
Specifically, the control module adopts hydraulic automatic control or electronic automatic control to control the gear shifting mechanism to realize automatic gear shifting.
The invention also provides an automobile comprising the automatic gear shifting control system, and the control system applies the automatic gear shifting control method.
The automatic gear-shifting control system acquires road condition information of a next time period of the vehicle from an intelligent driving system or a vehicle GPS positioning system through CAN bus communication, wherein the road condition information comprises driving distance, position information, gradient, road surface information and the like, and a driver CAN also realize real-time monitoring and management of the road condition information of the vehicle through a mobile terminal. And meanwhile, information such as the speed value, the accelerator opening or the engine speed of the vehicle in the current time period is also acquired, the speed value of the vehicle in the next time period is judged in advance according to the acquired road condition information of the vehicle in the next time period, whether the gear shifting requirement is met is judged according to the gear where the vehicle is shifted out in the current time period and the gear where the vehicle speed in the next time period is located, and if the optimal gear shifting time is calculated according to a calculation method set in advance in a slope road and special weather, the vehicle running safety is ensured, and the fuel consumption is reduced.
In some embodiments, the automatic shift control system may also provide a multi-condition query of the report and export of the report. By means of the report function, the service information content is comprehensively enriched, and the vehicle information is more enriched. The method comprises alarm statistics (SOS alarm, border crossing alarm, overspeed alarm and power failure alarm), driving reports (start-stop statistics and historical tracks), oil consumption reports (daily oil consumption and oil filling statistics), mileage statistics, temperature statistics, short message statistics and image statistics.
In some embodiments, the automatic gear-shifting control system can also provide functions of real-time inquiry of vehicle real-time vehicle condition information (fuel consumption information, battery voltage, air inlet pipe temperature, current vehicle speed, engine water temperature, engine speed), fault recording, maintenance management, driving report and the like.
The invention can prejudge the vehicle speed information of the vehicle in the next period in advance, shift gears in time, control the rotating speed of the engine within the range of low energy consumption and prevent the problem of overhigh oil consumption. The invention integrates the gradient problem with automatic gear shifting, provides a calculation method of the optimal gear shifting time on a gradient road section, combines the actual road condition, moderately advances and delays the gear shifting time, and shifts gears at the optimal gear shifting time. The invention obtains the speed information in advance, improves the response time of the transmission gear, and improves the fuel economy performance, the driving performance and the vehicle safety performance of the vehicle.
It should be noted that: the precedence order of the above embodiments of the present invention is only for description, and does not represent the merits of the embodiments. And specific embodiments thereof have been described above. Other embodiments are within the scope of the following claims. In some cases, the actions or steps recited in the claims may be performed in a different order than in the embodiments and still achieve desirable results. In addition, the processes depicted in the accompanying figures do not necessarily require the particular order shown, or sequential order, to achieve desirable results. In some embodiments, multitasking and parallel processing may also be possible or may be advantageous.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, as for the device and server embodiments, since they are substantially similar to the method embodiments, the description is simple, and the relevant points can be referred to the partial description of the method embodiments.
It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program instructing relevant hardware, and the program may be stored in a computer-readable storage medium, which may be a read-only memory, a magnetic or optical disk, or the like.
While the invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not to be limited to the disclosed embodiment, but on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.
Claims (10)
1. An automatic shift control method, characterized by comprising:
acquiring road condition information of the vehicle in the next time period;
acquiring a vehicle speed value of a vehicle in the current time period;
pre-judging the vehicle condition information of the vehicle at the next time period according to the road condition information of the vehicle at the next time period, wherein the vehicle condition information of the vehicle at the next time period at least comprises a vehicle speed value of the vehicle at the next time period;
judging whether the gear shifting requirement is met or not according to the vehicle condition information of the next time period and the vehicle speed value of the current time period;
when the gear shifting requirement is met, a gear shifting instruction is obtained;
calculating the optimal gear shifting time according to the vehicle condition information of the next time period and the road condition information of the next time period;
and controlling a gear shifting mechanism to execute gear shifting according to the gear shifting command and the optimal gear shifting time.
2. The method as claimed in claim 1, wherein said obtaining road condition information of the vehicle in the next time interval comprises obtaining road condition information of at least road type, driving distance or gradient in the next time interval.
3. An automatic shift control method as claimed in claim 1, wherein said determining whether a shift demand is met comprises:
judging whether the current time period vehicle speed value and the next time period vehicle speed value of the vehicle are in the same gear;
if so, maintaining the current gear of the vehicle;
if not, judging upshifting or downshifting according to the current time period vehicle speed value and the next time period vehicle speed value;
when the gear of the current time period vehicle speed value is lower than the gear of the vehicle of the next time period vehicle speed value, the gear is shifted up;
and when the gear of the vehicle speed value in the current time period is higher than the gear of the vehicle in the next time period, performing downshift.
4. The automatic gear shifting control method according to claim 3, characterized in that optimal vehicle speed intervals corresponding to different gears of the vehicle are set according to fuel consumption or vehicle power performance, and the gears are controlled and cannot be adjusted, input or selected to exceed the limit range of the optimal vehicle speed intervals.
5. An automatic shift control method as claimed in claim 1, wherein said calculating an optimal shift time comprises:
when the current road is in a downhill slope, the speed is in an ascending state and the gear shifting requirement is met, gear shifting needs to be carried out in advance by T1 time, and the optimal gear shifting time is calculated to be T-T1;
when the current road is in a downhill slope, the speed is in a deceleration state and the gear shifting requirement is met, calculating the optimal gear shifting time to be T + T1;
when the current road is on an uphill slope and the speed is in a rising state and meets the gear shifting requirement, the gear shifting needs to be carried out by delaying the time T2, and the optimal gear shifting time is calculated to be T + T2;
when the current road is on an uphill slope, the speed is in a deceleration state and the gear shifting requirement is met, the optimal gear shifting time is calculated to be T-T2.
6. An automatic shift control method as claimed in claim 5 wherein T is a preset automatic shift time, T1 is a preset first shift differential time, and T2 is a preset second shift differential time.
7. The method as claimed in claim 6, wherein the step of obtaining the road condition information of the vehicle in the next time period further comprises obtaining climate information, and when the obtained climate information is rainy, snowy or foggy, the climate information is combined to advance or delay the preset automatic gear shifting time by a certain time so as to find the optimal gear shifting time.
8. An automatic shift control system, characterized by comprising:
the parameter acquisition module is used for acquiring road condition information of the vehicle in the next time period and acquiring a vehicle speed value of the vehicle in the current time period;
the prediction module is used for predicting the vehicle condition information of the vehicle in the next time period;
the judging module is used for judging whether the gear shifting requirement is met according to the vehicle condition information of the next time period and the vehicle speed value of the current time period;
the command acquisition module is used for acquiring a gear shifting command;
the calculating module is used for calculating the optimal gear shifting time according to the vehicle condition information of the next time period and the road condition information of the next time period;
and the control module is used for controlling the gear shifting mechanism to execute gear shifting according to the gear shifting command and the optimal gear shifting time under the condition of meeting the gear shifting requirement.
9. The automatic shift control system of claim 8, wherein the control module controls the shift mechanism to shift automatically using hydraulic or electronic automatic control.
10. An automobile characterized by comprising the automatic shift control system according to any one of claims 8 to 9, which applies the automatic shift control method.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113606329A (en) * | 2021-06-25 | 2021-11-05 | 东风汽车集团股份有限公司 | Vehicle, determination method and determination system of driving mode of vehicle and TCU |
| CN114117830A (en) * | 2022-01-25 | 2022-03-01 | 神龙汽车有限公司 | Automatic gearbox gear shifting opportunity calculation method and system based on different working conditions |
| CN114704631A (en) * | 2022-05-09 | 2022-07-05 | 潍柴动力股份有限公司 | Gear shifting control method and device, electronic equipment and storage medium |
| WO2022179396A1 (en) * | 2021-02-23 | 2022-09-01 | 腾讯科技（深圳）有限公司 | Vehicle gear control method and apparatus, computer device, and storage medium |
| WO2024082829A1 (en) * | 2022-10-18 | 2024-04-25 | 广州汽车集团股份有限公司 | Scenario-based predictive shift schedule self-adaption method and related device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103836179A (en) * | 2012-11-20 | 2014-06-04 | 通用汽车环球科技运作有限责任公司 | Gps-based predictive shift schedule for automatic transmission |
| CN104691549A (en) * | 2013-12-05 | 2015-06-10 | 现代自动车株式会社 | Method and system of controlling shift for vehicle |
| CN105673830A (en) * | 2016-01-15 | 2016-06-15 | 上海汽车变速器有限公司 | Road slope identifying method and system of automatic transmission |
| CN107143648A (en) * | 2017-05-18 | 2017-09-08 | 安徽江淮汽车集团股份有限公司 | Wet dual-clutch automatic transmission vehicle transport condition detection method |
| CN108506474A (en) * | 2018-04-19 | 2018-09-07 | 吉林大学 | A kind of automatic transmission shift point prediction control method and device based on onboard navigation system |
| CN109050534A (en) * | 2018-08-01 | 2018-12-21 | 江苏大学 | A kind of ecology driving reminding method |
| CN109237011A (en) * | 2018-09-11 | 2019-01-18 | 江苏大学 | A kind of automatic transmission gear shift control method containing driving behavior prediction model |
| CN110395268A (en) * | 2019-07-05 | 2019-11-01 | 吉林大学青岛汽车研究院 | A kind of economic assisting automobile driver system of truck based on road ahead information |
-
2020
- 2020-03-18 CN CN202010192562.6A patent/CN111457083A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103836179A (en) * | 2012-11-20 | 2014-06-04 | 通用汽车环球科技运作有限责任公司 | Gps-based predictive shift schedule for automatic transmission |
| CN104691549A (en) * | 2013-12-05 | 2015-06-10 | 现代自动车株式会社 | Method and system of controlling shift for vehicle |
| CN105673830A (en) * | 2016-01-15 | 2016-06-15 | 上海汽车变速器有限公司 | Road slope identifying method and system of automatic transmission |
| CN107143648A (en) * | 2017-05-18 | 2017-09-08 | 安徽江淮汽车集团股份有限公司 | Wet dual-clutch automatic transmission vehicle transport condition detection method |
| CN108506474A (en) * | 2018-04-19 | 2018-09-07 | 吉林大学 | A kind of automatic transmission shift point prediction control method and device based on onboard navigation system |
| CN109050534A (en) * | 2018-08-01 | 2018-12-21 | 江苏大学 | A kind of ecology driving reminding method |
| CN109237011A (en) * | 2018-09-11 | 2019-01-18 | 江苏大学 | A kind of automatic transmission gear shift control method containing driving behavior prediction model |
| CN110395268A (en) * | 2019-07-05 | 2019-11-01 | 吉林大学青岛汽车研究院 | A kind of economic assisting automobile driver system of truck based on road ahead information |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022179396A1 (en) * | 2021-02-23 | 2022-09-01 | 腾讯科技（深圳）有限公司 | Vehicle gear control method and apparatus, computer device, and storage medium |
| CN113606329A (en) * | 2021-06-25 | 2021-11-05 | 东风汽车集团股份有限公司 | Vehicle, determination method and determination system of driving mode of vehicle and TCU |
| CN114117830A (en) * | 2022-01-25 | 2022-03-01 | 神龙汽车有限公司 | Automatic gearbox gear shifting opportunity calculation method and system based on different working conditions |
| CN114117830B (en) * | 2022-01-25 | 2022-05-03 | 神龙汽车有限公司 | Automatic gearbox gear shifting opportunity calculation method and system based on different working conditions |
| CN114704631A (en) * | 2022-05-09 | 2022-07-05 | 潍柴动力股份有限公司 | Gear shifting control method and device, electronic equipment and storage medium |
| WO2024082829A1 (en) * | 2022-10-18 | 2024-04-25 | 广州汽车集团股份有限公司 | Scenario-based predictive shift schedule self-adaption method and related device |
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