CN115419707B - Control method and device for gear shifting up of gearbox, vehicle and storage medium - Google Patents
Control method and device for gear shifting up of gearbox, vehicle and storage medium Download PDFInfo
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- CN115419707B CN115419707B CN202211047951.5A CN202211047951A CN115419707B CN 115419707 B CN115419707 B CN 115419707B CN 202211047951 A CN202211047951 A CN 202211047951A CN 115419707 B CN115419707 B CN 115419707B
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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
- F16H61/0202—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 the signals being electric
- F16H61/0204—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 the signals being electric for gearshift control, e.g. control functions for performing shifting or generation of shift signal
- F16H61/0213—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 the signals being electric for gearshift control, e.g. control functions for performing shifting or generation of shift signal characterised by the method for generating shift 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
- 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
- F16H61/16—Inhibiting or initiating shift during unfavourable conditions, e.g. preventing forward reverse shift at high vehicle speed, preventing engine over speed
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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
- F16H59/36—Inputs being a function of speed
- F16H2059/366—Engine or motor speed
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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
- F16H59/60—Inputs being a function of ambient conditions
- F16H59/66—Road conditions, e.g. slope, slippery
- F16H2059/663—Road slope
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Transmission Device (AREA)
Abstract
The embodiment of the invention provides a control method and device for gear shifting of a gearbox, a vehicle and a storage medium, wherein the method comprises the following steps: firstly, road condition information of a road section running ahead of a vehicle is obtained, then, whether the road section running ahead is an uphill road section is predicted according to the road condition information of the road section running ahead of the vehicle, and finally, the gear box is controlled to prohibit upshifting when the road section running ahead is predicted to be the uphill road section. In the embodiment, the road condition information of a road section on which the vehicle runs ahead is predicted, and when the road section on which the vehicle runs ahead is predicted to be an uphill road section, the vehicle is controlled to prohibit the gear box from being up-shifted until the vehicle reaches the uphill road section. Compared with the prior art that the gear is up-shifted before ascending and the gear is down-shifted in the ascending process, the influence on the climbing performance and NVH performance of the vehicle due to frequent gear shifting can be effectively avoided.
Description
Technical Field
The invention relates to the technical field of automobiles, in particular to a control method and device for gear shifting up of a gearbox, a vehicle and a storage medium.
Background
At present, along with the general rising of people's requirement to vehicle driving impression, more and more people select automatic gear car, and automatic gear car not only has easy operation, conveniently drives, and factor of safety is high advantage, simultaneously, because automatic gear car can be according to automatic discernment gear of speed when driving, therefore, the driver can not need shift all the time when driving automatic gear car, only need master the aperture of throttle, just can easily realize the conversion of speed, has improved the comfort level of driving to a great extent.
In the prior art, when an automatic transmission automobile is driven to pass through an uphill road section, a distance before reaching the uphill road section often accelerates to rush the uphill road section, at this time, the gearbox can recognize and match the lifting of the speed and the rotation speed of the engine to automatically upshift, and in the process of uphill, the automatic transmission automobile can downshift due to the descending of the speed, so frequent gear shifting can affect the climbing performance and the NVH performance of the automobile.
Therefore, it is necessary to develop a control method for upshifting a transmission to solve the problem of frequent gear shifting caused by automatic upshifting a distance before an uphill and then automatic downshifting during the uphill of the existing vehicle.
Disclosure of Invention
In view of the foregoing, embodiments of the present invention provide a method, apparatus, vehicle, and storage medium for controlling upshifting of a transmission, so as to overcome or at least partially solve the foregoing problems.
In a first aspect of an embodiment of the present invention, there is provided a method for controlling upshifting of a transmission, the method being applied to a vehicle and including:
acquiring road condition information of a road section running in front of a vehicle;
predicting whether the front driving road section is an uphill road section according to the road condition information of the front driving road section of the vehicle;
and controlling the gearbox to inhibit upshift when the front driving road section is predicted to be an ascending road section.
Optionally, in the case where the front travel section is predicted to be an ascending road section, further comprising:
predicting whether the gradient of the ramp of the uphill road section is greater than a gradient threshold value;
and controlling the gearbox to inhibit upshift in the case that the front driving road section is predicted to be an ascending road section, wherein the method comprises the following steps of:
and controlling the gearbox to inhibit upshift when the front driving road section is predicted to be an ascending road section and the gradient of the ascending road section is larger than the gradient threshold value.
Optionally, in the case where the front traveling road section is predicted to be an ascending road section and a gradient of a slope of the ascending road section is greater than the gradient threshold value, the method further includes:
monitoring a current distance between the uphill road section and the vehicle;
controlling the transmission to prohibit upshift in a case where it is predicted that a forward traveling road section is an ascending road section and a gradient of a slope of the ascending road section is greater than the gradient threshold value, comprising:
in the case where it is predicted that the preceding traveling road section is an ascending road section, and the gradient of the slope of the ascending road section is greater than the gradient threshold value,
and when the current distance is larger than a second distance threshold and smaller than or equal to a first distance threshold, controlling the gearbox to inhibit upshift.
Optionally, after controlling the transmission to prohibit upshift, the method further comprises:
and when the current distance is smaller than or equal to the second distance threshold value, the control of the gear box for prohibiting the gear up is released.
Optionally, the releasing the control of the gear box to prohibit the upshift further includes:
monitoring a calibration rotating speed corresponding to the current rotating speed of an engine of the vehicle and the current gear of a gearbox of the vehicle;
and when the current rotating speed of the engine of the vehicle exceeds the current gear of the gearbox of the vehicle and the calibrated rotating speed corresponding to the vehicle speed, the control of prohibiting the gear up of the gearbox is released.
In a second aspect of the embodiment of the present invention, there is also provided a control device for upshifting a gearbox, including:
the acquisition module is used for acquiring current front road condition information and current vehicle condition information of the vehicle;
the prediction module is used for predicting whether the front driving road section is an ascending road section according to the road condition information of the front driving road section of the vehicle;
and the control module is used for controlling the gearbox to inhibit upshift when the predicted front driving road section is an uphill road section.
Optionally, the control module includes:
the first control sub-module is used for releasing the control of the gear box for prohibiting up shift when the current distance is smaller than or equal to the second distance threshold value;
and the second control sub-module is used for releasing the control of the gear box for prohibiting the gear up when the current rotating speed of the engine of the vehicle exceeds the gear where the gear box of the vehicle is currently positioned and the calibrated rotating speed corresponding to the vehicle speed.
A third aspect of the embodiment of the present invention also provides a vehicle comprising an apparatus according to the second aspect of the present embodiment.
The fourth aspect of the embodiment of the present invention further provides a computer readable storage medium, on which a computer program/instruction is stored, which when executed by a processor, implements the method for controlling upshifting of a gearbox according to the first aspect of the present embodiment.
The method provided by the embodiment of the invention comprises the following steps: firstly, road condition information of a road section running ahead of a vehicle is obtained, then, whether the road section running ahead is an uphill road section is predicted according to the road condition information of the road section running ahead of the vehicle, and finally, the gear box is controlled to prohibit upshifting when the road section running ahead is predicted to be the uphill road section. In the embodiment, the road condition information of a road section on which the vehicle runs ahead is predicted, and when the road section on which the vehicle runs ahead is predicted to be an uphill road section, the vehicle is controlled to prohibit the gear box from being up-shifted until the vehicle reaches the uphill road section. Compared with the prior art that the gear is up-shifted before ascending and the gear is down-shifted in the ascending process, the influence on the climbing performance and NVH performance of the vehicle due to frequent gear shifting can be effectively avoided.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments of the present invention will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of steps of a method for controlling upshift of a transmission according to an embodiment of the present invention;
fig. 2 is a flowchart of a step of acquiring road condition information of a road section traveling in front of a vehicle according to an embodiment of the present invention;
FIG. 3 is a flow chart of steps of another method for controlling upshift of a transmission according to an embodiment of the present invention;
FIG. 4 is a flowchart illustrating specific steps of a method for controlling upshift of a transmission according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of coordinates of an embodiment of the present invention;
fig. 6 is a schematic diagram of a control device for upshifting a gearbox according to an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings in the embodiments of the present invention. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
The embodiment of the invention provides a method for controlling gear shifting up of a gearbox, referring to fig. 1, fig. 1 is a step flow chart of the method for controlling gear shifting up of the gearbox, as shown in fig. 1, the method comprises the following steps:
step 100, obtaining road condition information of a road section running in front of a vehicle;
in the embodiment of the invention, when a vehicle runs on a road, road condition information of a running road section in front of the vehicle is required to be collected, the collected information is analyzed to obtain relevant road condition information of the running road section in front, and then the running road section in front is predicted according to the relevant road condition information of the running road section in front. The method for acquiring road condition information provided in this embodiment may be that road condition information of a front driving road section is acquired through automobile GPS navigation, or road condition information of a front driving road section is acquired through a camera built in a vehicle, or road condition information of a front driving road section is acquired through a combination of the two. And analyzing and detecting the acquired road condition information through the whole vehicle controller.
Step 200, predicting whether the front driving road section is an uphill road section according to the road condition information of the front driving road section of the vehicle;
in the step, after the road condition information of the front driving road section is collected through the automobile GPS navigation and/or the camera, the whole vehicle controller analyzes and detects the road condition information, and predicts whether the ramp type of the front driving road section is an uphill road section or not through analysis and detection of the road condition information.
The GPS navigation system of the vehicle and the built-in three-dimensional map can be used for determining the terrain condition within the threshold range of the distance vehicle by positioning the position of the vehicle in real time, and the whole vehicle controller can predict whether the front driving road section is an uphill road section or not. It should be noted that this is only one possible way to predict whether the road section ahead is an uphill road section in the present embodiment, and the present embodiment can also predict the road condition ahead in other possible ways, so the present invention is not limited herein.
And 300, controlling the gearbox to inhibit upshift when the front driving road section is predicted to be an ascending road section.
In the event that the forward travel segment is predicted to be an uphill segment, the overall vehicle controller will control the transmission to inhibit upshifting. In this step, when the forward road section is predicted to be an uphill road section successfully, the vehicle control unit will send an instruction for prohibiting upshift to the transmission, so that the transmission at this time does not continue upshift, that is, the transmission will not automatically match a gear corresponding to the vehicle speed and the accelerator opening at this time as the vehicle speed and the accelerator opening increase at this time.
Fig. 2 is a flowchart illustrating a step of obtaining road condition information of a road section traveling in front of a vehicle according to an embodiment of the present invention, where the step of obtaining road condition information of a road section traveling in front of a vehicle includes:
step 100, obtaining road condition information of a road section traveling in front of a vehicle, including:
step 101, obtaining the type of the ramp of a road section running in front of a vehicle;
in the embodiment of the invention, the road condition information of the road section running in front of the vehicle can be obtained by obtaining the type of the slope, the gradient of the slope and the distance between the gradient and the vehicle. In the embodiment of the invention, the topography condition within the threshold range of the distance vehicle can be judged by GPS navigation of the vehicle and a built-in three-dimensional map and by positioning the position of the vehicle in real time, and the whole vehicle controller can predict whether the front driving road section is an uphill road section.
102, acquiring the gradient of a slope of a road section running in front of a vehicle;
in the embodiment of the invention, the image information of the front uphill road section can be acquired through the camera arranged in the vehicle, the acquired image information is analyzed through the whole vehicle controller, and the gradient of the ramp of the uphill road section is estimated according to the elevation angle information of the uphill road section in the image information. It should be noted that the method for estimating the slope gradient of the slope provided in the embodiment of the present invention is only one possible implementation method, and in the present invention, the slope gradient of the front uphill road section may be predicted in other manners, which is not limited herein.
Step 103, obtaining the distance between the ramp of the road section running in front of the vehicle and the vehicle.
In the embodiment of the invention, the position of the vehicle and the position of the ramp of the front driving road section can be positioned in real time through GPS navigation of the vehicle, so that the distance between the front ramp and the vehicle can be estimated. In the embodiment of the present invention, it should be noted that the embodiment of the present invention is not limited to a specific method for acquiring the distance from the front ramp to the vehicle.
In another embodiment of the present invention, as shown in fig. 3, fig. 3 shows a step flow chart of another method for controlling upshift of a gearbox according to an embodiment of the present invention, including:
step 201, obtaining the type of the ramp of the road section running in front of the vehicle;
in the embodiment of the invention, the road condition information of the road section running in front of the vehicle can be obtained by obtaining the type of the slope, the gradient of the slope and the distance between the gradient and the vehicle. In the embodiment of the invention, the terrain condition within the threshold range of the distance vehicle can be judged by GPS navigation of the vehicle and a built-in three-dimensional map and by positioning the position of the vehicle in real time, and the whole vehicle controller can predict the type of the ramp of the road section running ahead.
Step 202, obtaining the gradient of a slope of a road section running in front of a vehicle;
in the embodiment of the invention, the image information of the front uphill road section can be acquired through the camera arranged in the vehicle, the acquired image information is analyzed through the whole vehicle controller, and the gradient of the ramp of the uphill road section is estimated according to the elevation angle information of the uphill road section in the image information. It should be noted that the method for estimating the slope gradient of the slope provided in the embodiment of the present invention is only one possible implementation method, and in the present invention, the slope gradient of the front uphill road section may be predicted in other manners, which is not limited herein.
Step 203, obtaining the distance between the ramp of the road section running in front of the vehicle and the vehicle.
In the embodiment of the invention, the position of the vehicle and the position of the ramp of the front driving road section can be positioned in real time through GPS navigation of the vehicle, so that the distance between the front ramp and the vehicle can be estimated. In the embodiment of the present invention, it should be noted that the embodiment of the present invention is not limited to a specific method for acquiring the distance from the front ramp to the vehicle.
Step 204, predicting whether the front driving road section is an ascending road section;
in the step, the terrain condition within the threshold range of the distance vehicle can be judged by GPS navigation of the vehicle and a built-in three-dimensional map and the position of the vehicle is positioned in real time, the whole vehicle controller analyzes the terrain condition of the front driving road section by combining the GPS navigation and the built-in three-dimensional map and predicts that the front road section is an uphill road section, namely, the condition of controlling the gear box to prohibit upshifting is satisfied.
Step 205, predicting whether the gradient of the ramp of the uphill road section is greater than a gradient threshold value;
after predicting that the front traveling road section is an ascending road section, in step 102, acquiring image information of the front ascending road section through a camera built in the vehicle, analyzing the acquired image information through the whole vehicle controller, estimating the gradient of the ramp of the ascending road section according to elevation angle information of the ascending road section in the image information, and meanwhile, comparing the estimated gradient of the ramp with a preset gradient threshold value by the whole vehicle controller, wherein the condition of prohibiting the gear of the gearbox from being up-shifted is met only when the estimated gradient value is higher than the preset gradient threshold value.
Step 206, monitoring whether the current distance between the uphill road section and the vehicle is greater than a second distance threshold and less than or equal to a first distance threshold;
in this step, after estimating the distance of the front ramp from the vehicle through the GPS navigation of the vehicle, by comparing with the first distance threshold value and the second distance threshold value set in advance, when the estimated current distance between the uphill road section and the vehicle is greater than the second distance threshold value and less than or equal to the first distance threshold value, the condition for controlling the transmission to prohibit upshift is satisfied.
Step 207, controlling the gearbox to inhibit upshifting.
In this embodiment, when the front driving road section is an uphill road section, and the slope gradient of the uphill road section is estimated to be greater than a preset gradient threshold value, and when it is monitored that the current distance between the slope of the uphill road section and the vehicle is greater than a second distance threshold value and less than or equal to a first distance threshold value, the whole vehicle controller sends an instruction for prohibiting upshift to the gearbox, so that the gearbox at the moment does not continuously upshift, that is, the gearbox does not automatically match with the gear corresponding to the current vehicle speed and the accelerator opening along with the increase of the vehicle speed and the accelerator opening at the moment, thereby avoiding upshift of the vehicle before reaching the uphill road section, avoiding the condition that the vehicle continuously downshifts for multiple times after reaching the uphill road section, and avoiding the influence on the climbing performance and the NVH performance of the vehicle.
In a preferred embodiment of the present invention, as shown in fig. 4, fig. 4 shows a flowchart of specific steps of a method for controlling upshift of a gearbox according to an embodiment of the present invention; comprising the following steps:
in this embodiment, the specific steps for controlling the gear box to prohibit the upshift are included, and are not described herein.
After controlling the transmission to inhibit upshift, comprising:
step 308, monitoring whether the current distance between the uphill road section and the vehicle is smaller than or equal to a second distance threshold value;
in the step, the transmission is controlled to inhibit upshifting before the vehicle reaches the uphill road section, and further, when the whole vehicle controller continuously monitors the distance between the uphill road section and the vehicle in real time through GPS navigation of the vehicle until the distance between the uphill road section and the vehicle is monitored to be smaller than or equal to a second distance threshold value, the control of the transmission to inhibit upshifting is released.
Step 309, monitoring whether the current rotation speed of the engine of the vehicle exceeds the calibration rotation speed corresponding to the gear and the vehicle speed of the gearbox of the vehicle;
in this embodiment of the present application, through a plurality of built-in rotational speed sensors of vehicle, monitor the current rotational speed of engine and the current gear and the speed of a motor vehicle at this moment to according to the current gear of gearbox and the corresponding calibration rotational speed of a motor vehicle, judge whether the current rotational speed of engine exceeds the current gear of gearbox and the corresponding calibration rotational speed of a motor vehicle, when the current rotational speed of engine exceeds the current gear of gearbox and the corresponding calibration rotational speed of a motor vehicle, release to the control that the gearbox banned the upshift. It should be noted that in practical applications, when the current rotation speed of the engine exceeds the calibration rotation speed corresponding to the current gear and the vehicle speed of the gearbox and the NVH of the vehicle is affected, the control of prohibiting the gear up of the gearbox still needs to be released even if the current distance is greater than the second threshold value.
Step 310, releasing the control of the gear box to inhibit the upshift.
In the embodiment of the invention, when the distance between the uphill road section and the vehicle is monitored to be smaller than or equal to the second distance threshold value or when the current rotating speed of the engine is monitored to exceed the current gear of the gearbox and the calibrated rotating speed corresponding to the vehicle speed, the control of prohibiting the gear of the gearbox from being up-shifted is required to be released.
It should be noted that the vehicle will travel to the uphill road section or already travel to the uphill road section at this time, considering that at this time, the driver often climbs the uphill road section by increasing the accelerator, at this time, the vehicle speed often increases slowly, but the engine speed increases faster, in order to avoid the situation that the vehicle shakes at this time, the control of prohibiting the upshift needs to be released, the upshift of the gearbox is allowed, the influence of the severe shaking of the vehicle on the NVH of the vehicle is reduced, and the driving feeling is improved.
Referring to fig. 5, the accelerator opening gradually increases and tends to be stable at a distance before the vehicle climbs a slope, and the vehicle speed gradually increases, correspondingly, under the condition that the front slope is not predicted in advance, the vehicle is firstly three-gear to four-gear, then is reduced from four-gear to three-gear during climbing, is reduced from three-gear to two-gear, and continuously reduces two gears; under the condition that a front ramp is predicted in advance, the vehicle does not have an upshift along with the increase of speed, keeps three gears unchanged, and only reduces one gear from three gears to two gears in the climbing process, correspondingly, when the ramp is predicted in advance, the speed and the accelerator opening degree increase along with the increase of the speed, when a gear shifting line of 4 gears is touched, the transmission does not have the upshift of 4 gears, but keeps the gear shifting line of 3 gears unchanged, and when the vehicle ascends, the gear shifting line of 2 gears can be triggered along with the increase of the accelerator and the reduction of the speed, and the requirement of ascending can be met by only reducing one gear; conversely, if the front ramp is not predicted in advance, the transmission is shifted up to 4 th gear when the 4 th gear shift line is touched along with the increase of the vehicle speed and the accelerator opening, and the up-hill demand can be met only when the vehicle is up-hill, the transmission is shifted to 2 nd gear along with the increase of the accelerator and the decrease of the vehicle speed, at the moment, two gears can be continuously reduced, and the gear shifting is more frequent.
In yet another aspect of the embodiment of the present invention, there is provided a control device for upshifting a transmission, as shown in fig. 6, the device including:
the acquisition module is used for acquiring road condition information of a road section running in front of the vehicle;
the prediction module is used for predicting whether the front driving road section is an ascending road section according to the road condition information of the front driving road section of the vehicle;
and the control module is used for controlling the gearbox to inhibit upshift when the predicted front driving road section is an uphill road section.
In the embodiment of the invention, firstly, the road condition information of the road section running ahead of the vehicle is acquired through the acquisition module, then, whether the road section running ahead is an ascending road section is predicted through the prediction module according to the road condition information of the road section running ahead of the vehicle, and finally, the gear box is controlled to prohibit the gear up under the condition that the road section running ahead is predicted to be the ascending road section through the control module.
The acquisition module comprises:
the first acquisition submodule is used for acquiring the type of the ramp of the road section running in front of the vehicle;
the second acquisition submodule is used for acquiring the gradient of the ramp of the road section running in front of the vehicle;
and the third acquisition sub-module is used for acquiring the distance between the ramp of the road section running in front of the vehicle and the vehicle.
The prediction module comprises:
the prediction submodule is used for predicting whether the gradient of the ramp of the uphill road section is larger than a gradient threshold value or not;
and the monitoring sub-module is used for monitoring the current distance between the uphill road section and the vehicle.
The control module comprises:
the first control sub-module is used for releasing the control of the gear box for prohibiting up shift when the current distance is smaller than or equal to the second distance threshold value;
and the second control sub-module is used for releasing the control of the gear box for prohibiting the gear up when the current rotating speed of the engine of the vehicle exceeds the gear where the gear box of the vehicle is currently positioned and the calibrated rotating speed corresponding to the vehicle speed.
The embodiment of the invention also provides a vehicle, which comprises the control method for the gear box upshift.
The embodiment of the invention also provides a vehicle, which comprises the control method for the gear box upshift.
The embodiment of the invention also provides a computer readable storage medium, on which a computer program/instruction is stored, which when executed by a processor, implements the method for controlling the upshift of the gearbox disclosed in the embodiment of the invention.
The embodiment of the invention provides a control method and device for gear shifting up of a gearbox, a vehicle and a storage medium. The method comprises the following steps: the road condition information of a road section running in front of a vehicle is obtained, wherein the road condition information comprises: the type of the ramp of the vehicle front travel section, the gradient of the ramp of the vehicle front travel section, and the distance of the ramp of the vehicle front travel section from the vehicle. And when the front traveling road section is an ascending road section, the gradient of the ascending road section is larger than a gradient threshold value, and the distance between the ascending road section and the vehicle is larger than a second distance threshold value and smaller than or equal to a first distance threshold value, the gearbox is controlled to inhibit upshift, so that the problem of frequent gear shifting caused by automatic upshift of a distance before the vehicle reaches the ascending road section and downshift of the vehicle in the ascending process is avoided, and the influence on climbing performance and NVH performance of the vehicle is reduced. After the gear shifting is forbidden by the gearbox, when the distance between the uphill road section and the vehicle is monitored to be smaller than or equal to a second distance threshold value, or when the current rotating speed of the engine of the vehicle is monitored to exceed the current gear of the gearbox of the vehicle and the calibrated rotating speed corresponding to the vehicle speed, the gear shifting forbidden by the gearbox is controlled to be forbidden.
In this specification, each embodiment is described in a progressive manner, and each embodiment is mainly described by differences from other embodiments, and identical and similar parts between the embodiments are all enough to be referred to each other.
Embodiments of the present invention are described with reference to flowchart illustrations and/or block diagrams of methods, apparatus, vehicles, and computer program products according to embodiments of the invention. 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 terminal device to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing terminal device, 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.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiment and all such alterations and modifications as fall within the scope of the embodiments of the invention.
Finally, it is further noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article or terminal device comprising the element.
The above detailed description of the control method, the device, the vehicle and the storage medium for the upshift of the gearbox, provided by the invention, applies specific examples to illustrate the principle and the implementation of the invention, and the description of the above examples is only used for helping to understand the method and the core idea of the invention; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in accordance with the ideas of the present invention, the present description should not be construed as limiting the present invention in view of the above.
Claims (7)
1. A method of controlling an upshift of a transmission, the method comprising:
acquiring road condition information of a road section running in front of a vehicle;
predicting whether the front driving road section is an uphill road section according to the road condition information of the front driving road section of the vehicle;
controlling the gearbox to inhibit upshifting if the front driving road section is predicted to be an ascending road section;
monitoring a current distance between the uphill road section and the vehicle;
controlling the transmission to prohibit upshift in a case where it is predicted that a forward traveling road section is an ascending road section and a gradient of a slope of the ascending road section is greater than a gradient threshold value, comprising:
in the case where it is predicted that the preceding traveling road section is an ascending road section, and the gradient of the slope of the ascending road section is greater than the gradient threshold value,
when the current distance is larger than a second distance threshold value and smaller than or equal to a first distance threshold value, controlling the gearbox to inhibit upshift;
and when the current distance is smaller than or equal to the second distance threshold value, the control of the gear box for prohibiting the gear up is released.
2. The control method of a transmission upshift according to claim 1, wherein in the case where it is predicted that the front travel section is an ascending road section, further comprising:
predicting whether the gradient of the ramp of the uphill road section is greater than the gradient threshold value;
and controlling the gearbox to inhibit upshift in the case that the front driving road section is predicted to be an ascending road section, wherein the method comprises the following steps of:
and controlling the gearbox to inhibit upshift when the front driving road section is predicted to be an ascending road section and the gradient of the ascending road section is larger than the gradient threshold value.
3. The control method for upshifting a transmission according to claim 1, wherein said releasing control for prohibiting upshifting of the transmission further comprises:
monitoring a calibration rotating speed corresponding to the current rotating speed of an engine of the vehicle and the current gear of a gearbox of the vehicle;
and when the current rotating speed of the engine of the vehicle exceeds the current gear of the gearbox of the vehicle and the calibrated rotating speed corresponding to the vehicle speed, the control of prohibiting the gear up of the gearbox is released.
4. A control device for upshifting a transmission, said device comprising:
the acquisition module is used for acquiring current front road condition information and current vehicle condition information of the vehicle;
the prediction module is used for predicting whether the front driving road section is an ascending road section according to the road condition information of the front driving road section of the vehicle;
the control module is used for controlling the gearbox to inhibit upshift under the condition that the predicted front driving road section is an uphill road section;
the monitoring sub-module is used for monitoring the current distance between the uphill road section and the vehicle;
controlling the transmission to prohibit upshift in a case where it is predicted that a forward traveling road section is an ascending road section and a gradient of a slope of the ascending road section is greater than a gradient threshold value, comprising:
in the case where it is predicted that the preceding traveling road section is an ascending road section, and the gradient of the slope of the ascending road section is greater than the gradient threshold value,
the prohibiting submodule is used for controlling the gearbox to prohibit upshift when the current distance is larger than a second distance threshold and smaller than or equal to a first distance threshold;
and the first control sub-module is used for releasing the control of prohibiting the gear up of the gearbox when the current distance is smaller than or equal to the second distance threshold value.
5. The control device for upshifting a transmission according to claim 4, wherein said control module comprises:
and the second control sub-module is used for releasing the control of the gear box for prohibiting the gear up when the current rotating speed of the engine of the vehicle exceeds the gear where the gear box of the vehicle is currently positioned and the calibrated rotating speed corresponding to the vehicle speed.
6. A vehicle comprising the apparatus of any one of claims 4 or 5.
7. A computer-readable storage medium, characterized in that it has stored thereon a computer program which, when executed by a processor, implements the steps of the method for controlling an upshift of a gearbox according to any one of claims 1 to 3.
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| CN202211047951.5A CN115419707B (en) | 2022-08-30 | 2022-08-30 | Control method and device for gear shifting up of gearbox, vehicle and storage medium |
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| CN202211047951.5A CN115419707B (en) | 2022-08-30 | 2022-08-30 | Control method and device for gear shifting up of gearbox, vehicle and storage medium |
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| CN115419707B true CN115419707B (en) | 2023-07-25 |
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| JPH0828697A (en) * | 1994-07-18 | 1996-02-02 | Toyota Motor Corp | Control device of automatic transmission for vehicle on downhill/uphill road |
| JPH09144874A (en) * | 1995-11-20 | 1997-06-03 | Nissan Motor Co Ltd | Shift control device for automatic transmission |
| WO2018058860A1 (en) * | 2016-09-28 | 2018-04-05 | 深圳市元征科技股份有限公司 | Uphill road prompting method and device for vehicle |
| CN110651139A (en) * | 2017-05-12 | 2020-01-03 | 五十铃自动车株式会社 | Vehicle control device and vehicle control method |
| CN112303222A (en) * | 2020-11-18 | 2021-02-02 | 一汽解放汽车有限公司 | Automatic transmission gear control method and system and vehicle |
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2022
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH0828697A (en) * | 1994-07-18 | 1996-02-02 | Toyota Motor Corp | Control device of automatic transmission for vehicle on downhill/uphill road |
| JPH09144874A (en) * | 1995-11-20 | 1997-06-03 | Nissan Motor Co Ltd | Shift control device for automatic transmission |
| WO2018058860A1 (en) * | 2016-09-28 | 2018-04-05 | 深圳市元征科技股份有限公司 | Uphill road prompting method and device for vehicle |
| CN110651139A (en) * | 2017-05-12 | 2020-01-03 | 五十铃自动车株式会社 | Vehicle control device and vehicle control method |
| CN112303222A (en) * | 2020-11-18 | 2021-02-02 | 一汽解放汽车有限公司 | Automatic transmission gear control method and system and vehicle |
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| CN115419707A (en) | 2022-12-02 |
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