阅读说明：本技术 换挡控制方法和装置 (Gear shifting control method and device ) 是由 刘强 曹永� 宗伟 郭太民 陈彦波 杨磊 王洪志 于 2020-01-03 设计创作，主要内容包括：本发明提供了一种换挡控制方法和装置,涉及车辆驾驶的技术领域,该换挡控制方法包括：获取当前车辆行驶位置的坡度值；当所获取的当前车辆行驶位置的坡度值超出当前车辆的挡位模式对应的坡度值范围,且在预定时间内所获取的当前车辆行驶位置的坡度值对应为同一挡位模式时,控制车辆换挡至所获取的当前车辆行驶位置的坡度值对应的挡位模式。本发明提供的换挡控制装置应用上述换挡控制方法,该装置包括检测模块和控制模块式。本发明缓解了现有技术中存在的自动挡汽车在山地上上坡时,由于山地坡度变化过快易频繁换挡而损耗汽车变速箱、降低驾驶舒适性的技术问题。(The invention provides a gear shifting control method and a gear shifting control device, which relate to the technical field of vehicle driving, and the gear shifting control method comprises the following steps: acquiring a gradient value of a current vehicle driving position; and when the acquired gradient value of the current vehicle running position exceeds the gradient value range corresponding to the gear mode of the current vehicle and the acquired gradient value of the current vehicle running position corresponds to the same gear mode within the preset time, controlling the vehicle to shift to the gear mode corresponding to the acquired gradient value of the current vehicle running position. The gear shifting control device provided by the invention applies the gear shifting control method and comprises a detection module and a control module. The invention solves the technical problems that when the automatic transmission automobile ascends on a mountain land, the change of the slope of the mountain land is too fast, gear shifting is easy to frequently occur, the gear box of the automobile is lost, and the driving comfort is reduced in the prior art.)

1. A shift control method, characterized by comprising:

acquiring a gradient value of a current vehicle driving position;

and when the acquired gradient value of the current vehicle running position exceeds the gradient value range corresponding to the gear mode of the current vehicle and the acquired gradient value of the current vehicle running position corresponds to the same gear mode within a preset time, controlling the vehicle to shift to the gear mode corresponding to the acquired gradient value of the current vehicle running position.

2. The shift control method according to claim 1, characterized in that the predetermined time includes a first predetermined time; when the acquired gradient value of the current vehicle running position exceeds a gradient value range corresponding to the gear mode of the current vehicle and the acquired gradient value of the current vehicle running position corresponds to the same gear mode within a preset time, controlling the vehicle to shift to the gear mode corresponding to the acquired gradient value of the current vehicle running position, and the method comprises the following steps:

and when the gradient value of the current vehicle running position acquired in the first preset time is higher than the gradient value range corresponding to the gear mode of the current vehicle and the gradient value of the current vehicle running position acquired in the first preset time corresponds to the same gear mode, controlling the vehicle to shift to the gear mode corresponding to the gradient value of the current vehicle running position acquired.

3. The shift control method according to claim 2, characterized in that the predetermined time further includes a second predetermined time;

when the obtained gradient value of the current vehicle running position exceeds a gradient value range corresponding to the gear mode of the current vehicle and the obtained gradient value of the current vehicle running position corresponds to the same gear mode within a preset time, controlling the vehicle to shift to the gear mode corresponding to the obtained gradient value of the current vehicle running position, and the method further comprises the following steps:

when the gradient value of the current vehicle running position acquired in second preset time is lower than the gradient value range corresponding to the gear mode of the current vehicle, the gradient value of the current vehicle running position acquired in the second preset time corresponds to the same gear mode, and the gradient value of the current vehicle running position acquired in the second preset time is lower than the buffer value of the same gear mode corresponding to the gradient value of the current vehicle running position, the vehicle is controlled to shift to the gear mode corresponding to the gradient value of the current vehicle running position;

and the buffer value is lower than the minimum value of the gradient value range corresponding to the corresponding gear mode.

4. The shift control method according to claim 1, characterized in that the acquiring of the gradient value of the current vehicle running position includes:

acquiring a gradient value of a current vehicle running position, and taking the time point as a starting point of preset time if the gradient value of the current vehicle running position exceeds a gradient value range corresponding to a gear mode of the current vehicle;

and continuously acquiring the gradient value of the current vehicle running position, if the gradient value of the current vehicle running position does not reach the preset time, taking the time point as the starting point of the next preset time when the gradient value of the current vehicle running position exceeds the gradient value range of the gear mode corresponding to the gradient value when the preset time is entered and also exceeds the gradient value range corresponding to the gear mode of the current vehicle, and controlling the vehicle to shift to the gear mode corresponding to the gradient value of the current vehicle running position until the gradient value of the current vehicle running position acquired in the preset time corresponds to the same gear mode.

5. The shift control method according to claim 3, characterized in that the difference between the damping value and the minimum value of the range of gradient values corresponding to the shift position mode corresponding thereto is two degrees.

6. The shift control method according to claim 3, characterized in that the first predetermined time is less than the second predetermined time.

7. The shift control method according to any one of claims 1 to 6, characterized in that the gradient value of the current vehicle running position is obtained by a gradient sensor provided on the vehicle.

8. A shift control apparatus characterized by applying the shift control method according to any one of claims 1 to 7, the apparatus comprising:

the detection module is used for acquiring the gradient value of the current vehicle driving position when the vehicle ascends a slope;

and the control module is used for controlling the vehicle to shift to the gear mode corresponding to the acquired gradient value of the current vehicle running position when the acquired gradient value of the current vehicle running position exceeds the gradient value range corresponding to the gear mode of the current vehicle and the acquired gradient value of the current vehicle running position corresponds to the same gear mode in a preset time.

9. The shift control device of claim 8, wherein the control module is further configured to:

and when the gradient value of the current vehicle running position acquired in the first preset time is higher than the gradient value range corresponding to the gear mode of the current vehicle and the gradient value of the current vehicle running position acquired in the first preset time corresponds to the same gear mode, controlling the vehicle to shift to the gear mode corresponding to the gradient value of the current vehicle running position acquired.

10. The shift control device of claim 9, wherein the control module is further configured to:

and when the gradient value of the current vehicle running position acquired in the second preset time is lower than the gradient value range corresponding to the gear mode of the current vehicle, the gradient value of the current vehicle running position acquired in the second preset time corresponds to the same gear mode, and the gradient value of the current vehicle running position acquired in the second preset time is lower than the buffer value corresponding to the same gear mode and corresponding to the gradient value of the current vehicle running position, controlling the vehicle to shift to the gear mode corresponding to the gradient value of the acquired current vehicle running position.

Technical Field

The invention relates to the technical field of vehicle driving, in particular to a gear shifting control method and device.

Background

The automatic transmission automobile can enter different driving modes when running under different road conditions. When the automatic transmission automobile ascends a slope on a mountain land, the automatic transmission automobile can enter a mountain driving mode in order to ensure that the automatic transmission automobile has enough dynamic property.

The mountain driving mode has multiple gears, and different gears correspond to different gradient value ranges. When the automatic transmission automobile ascends a slope on a continuous mountain road with large slope change, the automatic transmission automobile can shift along with the change of the slope. The driving force of the automatic transmission automobile can be adjusted through gear shifting, and then the automatic transmission automobile can keep better power for a long time on a continuous mountain road with large gradient change.

The existing automatic transmission automobile enters a mountain driving mode and then shifts gears is characterized in that the mass of the whole automobile and the acceleration during driving are detected, a road gradient value is calculated according to the mass of the whole automobile and the acceleration during driving, and whether the gears are shifted or not is judged according to the calculated road gradient value.

However, most mountain roads are rugged and bumpy, so that the gradient of the mountain land changes too fast, and therefore when the automatic transmission automobile ascends the mountain land, the gear shifting is easy to frequently shift, the automobile gearbox is lost, and the driving comfort is reduced.

Disclosure of Invention

The invention aims to provide a gear shifting control method and a gear shifting control device, which are used for solving the technical problems that when an automatic transmission automobile ascends a slope on a mountain land, the change of the slope of the mountain land is too fast, gear shifting is easy to frequently occur, the gear box of the automobile is lost, and the driving comfort is reduced in the prior art.

The invention provides a gear shifting control method, which comprises the following steps:

acquiring a gradient value of a current vehicle driving position;

and when the acquired gradient value of the current vehicle running position exceeds the gradient value range corresponding to the gear mode of the current vehicle and the acquired gradient value of the current vehicle running position corresponds to the same gear mode within the preset time, controlling the vehicle to shift to the gear mode corresponding to the acquired gradient value of the current vehicle running position.

Further, the predetermined time includes a first predetermined time; when the obtained gradient value of the current vehicle running position exceeds the gradient value range corresponding to the gear mode of the current vehicle and the obtained gradient value of the current vehicle running position corresponds to the same gear mode within a preset time, controlling the vehicle to shift to the gear mode corresponding to the obtained gradient value of the current vehicle running position, and the method comprises the following steps:

and when the gradient value of the current vehicle running position acquired in the first preset time is higher than the gradient value range corresponding to the gear mode of the current vehicle and the gradient value of the current vehicle running position acquired in the first preset time corresponds to the same gear mode, controlling the vehicle to shift to the gear mode corresponding to the gradient value of the current vehicle running position acquired.

Further, the predetermined time also comprises a second predetermined time;

when the obtained gradient value of the current vehicle running position exceeds the gradient value range corresponding to the gear mode of the current vehicle and the obtained gradient value of the current vehicle running position corresponds to the same gear mode within the preset time, the method for controlling the vehicle to shift to the gear mode corresponding to the obtained gradient value of the current vehicle running position further comprises the following steps:

when the gradient value of the current vehicle running position acquired in the second preset time is lower than the gradient value range corresponding to the gear mode of the current vehicle, the gradient value of the current vehicle running position acquired in the second preset time corresponds to the same gear mode, and the gradient value of the current vehicle running position acquired in the second preset time is lower than the buffer value of the same gear mode corresponding to the gradient value of the current vehicle running position, the vehicle is controlled to shift to the gear mode corresponding to the gradient value of the current vehicle running position;

the buffer value is lower than the minimum value of the slope value range corresponding to the corresponding gear mode.

Further, the acquiring of the gradient value of the current vehicle running position includes:

acquiring a gradient value of a current vehicle running position, and taking the time point as a starting point of preset time if the gradient value of the current vehicle running position exceeds a gradient value range corresponding to a gear mode of the current vehicle;

and continuously acquiring the gradient value of the current vehicle running position, if the gradient value of the current vehicle running position does not reach the preset time, taking the time point as the starting point of the next preset time when the gradient value of the current vehicle running position exceeds the gradient value range of the gear mode corresponding to the gradient value when the preset time is entered and also exceeds the gradient value range corresponding to the gear mode of the current vehicle, and controlling the vehicle to shift to the gear mode corresponding to the gradient value of the current vehicle running position until the gradient value of the current vehicle running position acquired in the preset time corresponds to the same gear mode.

Further, the difference between the buffer value and the minimum value of the range of the gradient value corresponding to the corresponding shift mode is two degrees.

Further, the first predetermined time is less than the second predetermined time.

Further, the gradient value of the current vehicle running position is obtained by a gradient sensor provided on the vehicle.

The invention provides a gear shifting control device, which applies any one of the gear shifting control methods in the technical scheme, and the device comprises:

the detection module is used for acquiring the gradient value of the current vehicle driving position when the vehicle ascends a slope;

and the control module is used for controlling the vehicle to shift to the gear mode corresponding to the acquired gradient value of the current vehicle running position when the acquired gradient value of the current vehicle running position exceeds the gradient value range corresponding to the gear mode of the current vehicle and the acquired gradient value of the current vehicle running position corresponds to the same gear mode in a preset time.

Further, the control module is further configured to:

and when the gradient value of the current vehicle running position acquired in the first preset time is higher than the gradient value range corresponding to the gear mode of the current vehicle and the gradient value of the current vehicle running position acquired in the first preset time corresponds to the same gear mode, controlling the vehicle to shift to the gear mode corresponding to the gradient value of the current vehicle running position acquired.

Further, the control module is further configured to:

and when the gradient value of the current vehicle running position acquired in the second preset time is lower than the gradient value range corresponding to the gear mode of the current vehicle, the gradient value of the current vehicle running position acquired in the second preset time corresponds to the same gear mode, and the gradient value of the current vehicle running position acquired in the second preset time is lower than the buffer value corresponding to the same gear mode and corresponding to the gradient value of the current vehicle running position, controlling the vehicle to shift to the gear mode corresponding to the gradient value of the acquired current vehicle running position.

The gear shifting control method and the gear shifting control device provided by the invention have the following beneficial effects:

the gear shifting control method provided by the invention comprises the following steps: acquiring a gradient value of a current vehicle driving position; and when the acquired gradient value of the current vehicle running position exceeds the gradient value range corresponding to the gear mode of the current vehicle and the acquired gradient value of the current vehicle running position corresponds to the same gear mode within the preset time, controlling the vehicle to shift to the gear mode corresponding to the acquired gradient value of the current vehicle running position. When the vehicle ascends a slope on a road with a fast slope change, the situation that the vehicle returns to the slope value range corresponding to the driving mode immediately after the slope value exceeds the slope value range corresponding to the current driving mode of the vehicle easily occurs. For the vehicle applying the gear shifting control method provided by the invention, in the driving process, the driving mode corresponding to the gradient value of the driving position of the vehicle is changed and is not maintained in the changed driving mode within the preset time, so that the vehicle is not shifted to the gear mode corresponding to the gradient value of the current driving position of the vehicle. It should be noted that, because the grade changes faster, the vehicle can cross the section with faster grade change without shifting gears. According to the gear shifting control method provided by the invention, the preset time is added in the judgment condition, so that the gear can be prevented from being frequently switched when the vehicle runs on a road with a fast gradient change, the loss of a vehicle gearbox can be reduced, and the driving comfort is improved.

The invention provides a gear shifting control device which comprises a detection module and a control module. The detection module is used for acquiring the gradient value of the current vehicle running position when the automobile goes up a slope. The control module is used for controlling the vehicle to shift to the gear mode corresponding to the gradient value of the obtained current vehicle running position when the gradient value of the obtained current vehicle running position exceeds the gradient value range corresponding to the gear mode of the current vehicle and the gradient value of the obtained current vehicle running position corresponds to the same gear mode in a preset time. The gear shifting control device provided by the invention applies the gear shifting control method, so that the gear shifting control device has the same beneficial effects as the gear shifting control method.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a flowchart of a shift control method according to an embodiment of the present invention;

FIG. 2 is another flowchart of a shift control method according to an embodiment of the present invention;

FIG. 3 is a flowchart of a shift control method according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a shift control device according to a second embodiment of the present invention.

In the figure:

1-a detection module; 2-control module.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all, embodiments of the present invention. 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.