CN113276825B

CN113276825B - Automobile acceleration control method and automobile

Info

Publication number: CN113276825B
Application number: CN202010102314.8A
Authority: CN
Inventors: 贾晓伟; 乔利珍; 许少华; 王超; 李孝军; 郭小雷; 王雪亮; 贾晔松; 宣华; 赵天硕
Original assignee: Great Wall Motor Co Ltd
Current assignee: Great Wall Motor Co Ltd
Priority date: 2020-02-19
Filing date: 2020-02-19
Publication date: 2022-06-14
Anticipated expiration: 2040-02-19
Also published as: CN113276825A

Abstract

The disclosure relates to the field of automobiles, in particular to an automobile acceleration control method and an automobile. The automobile acceleration control method comprises the following steps: determining the gear and the opening degree of an accelerator pedal of the automobile in the process of judging that the automobile is in a forward towing state from a reverse towing state, and controlling the transmission torque of the transmission to change at a preset rising rate within preset time according to the gear and the opening degree of the accelerator pedal of the automobile; wherein the predetermined time starting point is that the torque of the engine is equal to the transmission torque of the transmission. According to the automobile acceleration control method, in the process of changing the automobile from sliding to re-accelerating, the transmission torque of the transmission is changed at the preset rising rate within the preset time, the whole automobile rushing can be effectively avoided, and the noise of a transmission system is eliminated.

Description

Automobile acceleration control method and automobile

Technical Field

The present disclosure generally relates to the field of automobiles, and more particularly, to an acceleration control method for an automobile and an automobile.

Background

Along with the popularization of vehicles, people have higher and higher requirements on the driving comfort of the vehicles. The problems of rushing and noise are easily caused in the process of sliding and accelerating the existing automatic-gear vehicle at each gear.

When the vehicle is in the process of sliding, the whole vehicle reversely drags the engine, namely: the engine is in a non-fuel injection state. The engine torque value is now negative and the absolute value is approximately equal to the transmission transfer torque. When the accelerator pedal is stepped on, the engine torque value starts to rise from a negative value, the transmission torque value starts to fall from a positive value, the transmission torque value of the engine is equal to the transmission torque of the transmission, the transmission torque value rises along with the engine torque value, the torque value of the engine rises to the torque value corresponding to the current accelerator pedal, and the engine is dragging the whole vehicle to run. When the transmission system of the whole vehicle is changed from backward dragging to forward dragging, the transmission torque of the speed changer rises rapidly, and the whole vehicle is easy to generate rushing and noise.

Disclosure of Invention

The invention aims to provide an automobile acceleration control method and an automobile, which change the slow backward dragging of the automobile into the forward dragging of the automobile and avoid the problems of rushing and noise in the automobile acceleration process.

One embodiment of the present disclosure provides an acceleration control method for an automobile, including the steps of: determining the gear and the opening degree of an accelerator pedal of the automobile in the process of judging that the automobile is in a forward towing state from a reverse towing state, and controlling the transmission torque of the transmission to change at a preset rising rate within preset time according to the gear and the opening degree of the accelerator pedal of the automobile; wherein the preset time starting point is that the torque of the engine is equal to the transmission torque of the transmission.

According to some embodiments of the disclosure, the step of accelerating activation is preceded by the steps of: preparing for acceleration: and monitoring the opening degree of the accelerator pedal, wherein the opening degree of the accelerator is changed from being larger than zero to zero and is kept.

According to some embodiments of the disclosure, the step of accelerating preparation comprises, before the step of: accelerated deactivation: and monitoring the opening degree of the accelerator pedal, wherein the opening degree of the accelerator pedal is larger than zero.

According to some embodiments of the disclosure, the accelerated inactivation step is preceded by the steps of: acceleration control is initiated.

According to some embodiments of the disclosure, the conditions for transitioning from the accelerated deactivation step to the accelerated preparation step are: the automobile is in a forward gear, and the gear is not changed; the driving mode of the car is unchanged; the opening degree of the accelerator pedal is changed from being larger than zero to zero.

According to some embodiments of the present disclosure, the condition for the transition from the acceleration preparing step to the acceleration activating step is: the automobile is in a forward gear, and the gear is not changed; the driving mode of the car is unchanged; the opening degree of the accelerator pedal is changed from zero to be larger than zero.

According to some embodiments of the present disclosure, in the acceleration activating step, if the accelerator pedal opening is changed from greater than zero to zero, the acceleration activating step goes to the acceleration preparing step.

According to some embodiments of the present disclosure, in the acceleration activating step, if the time during which the transmission torque of the transmission changes at the preset rising rate reaches the preset time, the acceleration activating step is shifted to the acceleration deactivating step.

An embodiment of the present disclosure also provides an electronic device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the automobile acceleration control method as described above when executing the program.

An embodiment of the present disclosure also provides a computer-readable storage medium having a processor program stored thereon, wherein the processor program is used for executing the above-mentioned automobile acceleration control method.

An embodiment of the present disclosure also provides a vehicle including the electronic apparatus as described above.

According to the automobile acceleration control method, in the process of changing the sliding into the re-acceleration of the automobile, the transmission torque of the transmission is changed at the preset rising rate within the preset time, so that the reverse dragging of a transmission system of the automobile is slowly changed into the forward dragging, the whole automobile rushing can be effectively avoided, and the noise of the transmission system is eliminated.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure and are not to limit the disclosure. In the drawings:

FIG. 1 is a flow chart illustrating a method for controlling acceleration of a vehicle according to an embodiment of the present disclosure;

fig. 2 illustrates an electronic device of an embodiment of the disclosure.

Detailed Description

In the following, only certain exemplary embodiments are briefly described. As those skilled in the art can appreciate, the described embodiments can be modified in various different ways, without departing from the spirit or scope of the present disclosure. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive.

In the description of the present disclosure, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "straight", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be considered as limiting the present disclosure. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present disclosure, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present disclosure, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as being fixed or removable or integral, either mechanically, electrically or communicatively coupled; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present disclosure can be understood by those of ordinary skill in the art as appropriate.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise the first and second features being in direct contact, or may comprise the first and second features being in contact, not directly, but via another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the disclosure. To simplify the disclosure of the present disclosure, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present disclosure. Moreover, the present disclosure may repeat reference numerals and/or reference letters in the various examples, which have been repeated for purposes of simplicity and clarity and do not in themselves dictate a relationship between the various embodiments and/or arrangements discussed. In addition, the present disclosure provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

The preferred embodiments of the present disclosure will be described below with reference to the accompanying drawings, and it should be understood that the preferred embodiments described herein are merely for purposes of illustrating and explaining the present disclosure and are not intended to limit the present disclosure.

During the sliding process of the automobile, the opening degree of an accelerator pedal is zero, and a transmission system is in a reverse dragging state. And detecting that the engine torque is a negative value through a sensor in the reverse dragging state. When the automobile is accelerated in a sliding state, an accelerator pedal needs to be stepped, the opening degree of the accelerator pedal is changed from zero to be larger than zero, and the reverse dragging of the transmission system is changed into the forward dragging state of the engine to the whole automobile. The engine torque is detected to be a positive value by the sensor in the positive towing state.

As shown in fig. 1, an exemplary embodiment of the present disclosure provides an acceleration control method of an automobile. The automobile acceleration control method comprises the following steps: determining the gear and the opening degree of an accelerator pedal of the automobile in the process of judging that the automobile is in a forward towing state from a reverse towing state, and controlling the transmission torque of the transmission to change at a preset rising rate within preset time according to the gear and the opening degree of the accelerator pedal of the automobile; wherein the preset time starting point is that the torque of the engine is equal to the transmission torque of the transmission. The condition for determining that the automobile is in the process of changing from the reverse dragging state to the forward dragging state comprises that the opening degree of an accelerator pedal changes from zero to be larger than zero when the automobile slides. Different gears and different accelerator pedal opening degrees can correspond to different preset time and preset rising rate. And in the preset time, the preset rising rate of the transmission torque of the transmission is small, so that the transmission system of the automobile is slowly changed from reverse dragging to forward dragging. After a preset time, the transmission torque of the transmission rapidly rises with the torque of the engine.

According to an optional technical scheme of the disclosure, the accelerating activation step comprises the following steps: accelerating preparation: and monitoring the opening degree of an accelerator pedal, wherein the opening degree of the accelerator is changed from being larger than zero to zero and is kept. When the opening degree of the accelerator is changed from zero to zero, the automobile enters a sliding state and enters an acceleration preparation step. In the acceleration preparation step, the automobile is in a sliding state, the opening degree of an accelerator pedal is kept to be zero, and a driver can tread the accelerator pedal at any time, so that the opening degree of the accelerator pedal is larger than zero. The acceleration preparation step is ready to start the acceleration activation step at any time.

According to an optional technical scheme of the disclosure, the acceleration preparation step comprises the following steps: accelerated deactivation: and monitoring the opening degree of an accelerator pedal, wherein the opening degree of the accelerator pedal is larger than zero. When the opening degree of the accelerator pedal keeps the automobile larger than zero, the automobile is in a normal driving state instead of a sliding state, and the step of accelerating activation is not required to be started.

According to an optional technical scheme of the disclosure, the step of accelerating inactivation comprises the following steps: acceleration control is initiated. The automobile is provided with an acceleration control function switch. And turning on an acceleration control function switch, and starting the acceleration control method by the automobile. And (4) turning off the acceleration control function switch, and the acceleration control method cannot be started no matter what state the automobile is in.

Alternatively, the conditions for switching from the accelerated deactivation step to the accelerated preparation step are:

(1) the automobile is in a forward gear, and the gear is not changed;

(2) the driving mode of the car is unchanged;

(3) the opening degree of the accelerator pedal is changed from being larger than zero to zero.

The above conditions must be met simultaneously in order to pass from the accelerated deactivation step to the accelerated preparation step.

Optionally, the condition for switching from the acceleration preparing step to the acceleration activating step is:

(1) the automobile is in a forward gear, and the gear is not changed;

(2) the driving mode of the car is not changed;

(3) the opening degree of the accelerator pedal is changed from zero to be larger than zero.

The above conditions must be satisfied simultaneously, so that the acceleration preparation step can be switched to the acceleration activation step.

According to an optional technical scheme of the disclosure, when the automobile is in the acceleration activation step, if the opening degree of an accelerator pedal is changed from zero to zero, the acceleration activation step is changed to the acceleration preparation step. Namely, when the automobile is in the acceleration activation step, the time for keeping the opening degree of the accelerator pedal larger than zero is smaller than the preset time, and the acceleration activation step is switched to the acceleration preparation step.

According to an optional technical scheme of the disclosure, when the automobile is in the acceleration activation step, if the time for the transmission torque of the transmission to change at the preset rising rate reaches the preset time, the acceleration activation step is switched to the acceleration deactivation step. Namely, when the automobile is in the acceleration activation step, the time that the opening degree of the accelerator pedal is kept larger than zero exceeds the preset time, and the acceleration activation step is switched to the acceleration deactivation step.

The process of calibrating the preset time and the preset rising rate (hereinafter referred to as the rising rate) of the transmission torque of the transmission under the specific gear and the specific accelerator pedal opening degree comprises the following steps:

(1) in a specific gear, changing the opening degree of the accelerator from zero to a specific value, and setting a preset time and a rising rate; the preset time starts when the torque of the engine is equal to the transmission torque of the transmission. The torque of the engine and the transmission torque of the transmission are detected by sensors.

(2) If the automobile does not break through the movement and the noise within the preset time, the preset time is shortened every 10 ms/time for testing until the automobile generates the break through and the noise, the last preset time of the automobile for generating the break through and the noise is used as the preset time corresponding to the specific gear and the specific accelerator pedal opening, and the given rising rate is used as the rising rate corresponding to the specific gear and the specific accelerator pedal opening.

If the automobile generates the rushing and the noise after the given preset time, the test is carried out by prolonging the preset time every 10 ms/time until the automobile does not generate the rushing and the noise, the preset time when the automobile does not generate the rushing and the noise is used as the preset time corresponding to the specific gear and the specific opening degree of the accelerator pedal, and the given rising rate is used as the rising rate corresponding to the specific gear and the specific opening degree of the accelerator pedal.

(3) The predetermined time is usually in the range of 200-800ms, and if the predetermined time in step (2) is too large or too small, the rising rate can be adjusted appropriately. An increase in the rise rate may shorten the preset time, and a decrease in the rise rate may lengthen the preset time. The rise rate is usually in the range of 0.5-1.5Nm/10 ms.

Taking an example that a certain type of automobile is in a 3-gear position and the opening degree of an accelerator pedal is 70%, the calibration process of the preset time and the rising rate is as follows:

(1) the automobile is in a 3-gear position, the opening degree of an accelerator pedal is changed from zero to 70%, the given preset time is 400ms, and the rising rate is 0.7Nm/10 ms. The preset time starts when the torque of the engine is equal to the transmission torque of the transmission.

(2) After the preset time of 400ms, the automobile generates rushing and noise. The test is performed by prolonging the preset time every 10ms, and the automobile does not run and has no noise for 450 ms. And taking 450ms as the preset time of the automobile in the 3 gear and the accelerator pedal opening degree of 70%. 0.7Nm/10ms is used as the rising rate of the automobile in 3-gear and 70% of the opening degree of an accelerator pedal.

When the automobile is calibrated in a 3-gear state, the preset time of 50% of the opening degree of an accelerator pedal is as follows: 390ms, the rise rate is: 0.9Nm/10 ms.

When the automobile is calibrated at 4 gears, the preset time of 50% of the opening degree of an accelerator pedal is as follows: 350ms, the rising rate is: 0.8Nm/10 ms.

Optionally, the accelerator pedal opening is scaled to 5%, 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, 100%.

As shown in fig. 2, an embodiment of the present disclosure also provides an electronic device. The electronic device may be a chip. The chip may include an output unit 201, an input unit 202, a processor 203, a memory 204, a communication interface 205, and a memory unit 206.

The memory 204 is a non-transitory computer readable memory for storing software programs, computer executable programs, and modules, such as program instructions/modules corresponding to the acceleration control method of the vehicle described above.

The processor 203 executes various functional applications and data processing of the electronic device by executing software programs, instructions and modules stored in the memory cutoff, namely, implements the method described in the above embodiment.

The memory 204 may include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required for at least one function; the storage data area may store data created according to use of the electronic device, and the like. Further, the memory 204 may include high speed random access memory, and may also include non-transitory memory, such as at least one magnetic disk storage device, flash memory device, or other non-transitory solid state storage device. In some embodiments, memory 204 optionally includes memory located remotely from processor 203, which may be connected to the electronic device via a network.

Embodiments of the present disclosure also provide a computer-readable storage medium having stored thereon a processor program for executing the above-described automobile acceleration control method.

Embodiments of the present disclosure also provide a vehicle including the above electronic device.

According to the automobile acceleration control method, in the process of sliding and accelerating the automobile again, different gears and different opening degrees of the accelerator pedal are identified, the transmission torque of the transmission is controlled to change at a preset rising rate within preset time, so that the transmission system is slowly transited from backward dragging to forward dragging, and the transmission system is prevented from generating rushing and noise.

The above description is only exemplary of the present disclosure and should not be taken as limiting the disclosure, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present disclosure should be included in the scope of protection of the present disclosure.

Finally, it should be noted that: although the present disclosure has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the disclosure. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present disclosure should be included in the protection scope of the present disclosure.

Claims

1. An automobile acceleration control method is characterized by comprising the following steps:

accelerating activation: determining that the automobile is in a forward gear, the gear is unchanged and the opening degree of an accelerator pedal is greater than zero in the process of changing the reverse dragging state of the automobile into the forward dragging state of the automobile, and controlling the transmission torque of the transmission to change at a preset rising rate within preset time according to the gear and the opening degree of the accelerator pedal of the automobile; the preset rising rate is smaller than the normal rising rate corresponding to the gear of the automobile and the opening degree of the accelerator pedal;

wherein the preset time starting point is that the torque of the engine is equal to the transmission torque of the transmission.

2. The acceleration control method of an automobile according to claim 1, characterized in that the acceleration activating step is preceded by the steps of:

accelerating preparation: and monitoring the opening degree of the accelerator pedal, wherein the opening degree of the accelerator is changed from being larger than zero to zero and is kept.

3. The acceleration control method of an automobile according to claim 2, characterized in that the acceleration preparation step is preceded by the step of:

accelerated deactivation: and monitoring the opening degree of the accelerator pedal, wherein the opening degree of the accelerator pedal is larger than zero.

4. The acceleration control method for an automobile according to claim 3, characterized in that the acceleration deactivating step is preceded by the steps of: acceleration control is initiated.

5. The acceleration control method for an automobile according to claim 3, characterized in that the condition for shifting from the acceleration deactivation step to the acceleration preparation step is:

the automobile is in a forward gear, and the gear is not changed;

the driving mode of the car is unchanged;

the opening degree of the accelerator pedal is changed from being larger than zero to zero.

6. The acceleration control method for an automobile according to claim 3, characterized in that a condition for shifting from the acceleration preparing step to the acceleration activating step is:

the automobile is in a forward gear, and the gear is not changed;

the driving mode of the car is unchanged;

the opening degree of the accelerator pedal is changed from zero to be larger than zero.

7. The acceleration control method for the vehicle according to claim 3, characterized in that, in the acceleration activation step, if the accelerator pedal opening degree is changed from greater than zero to zero, the acceleration activation step is shifted to the acceleration preparation step.

8. The acceleration control method for an automobile according to claim 3, characterized in that, in the acceleration enabling step, if the time during which the transmission torque of the transmission is changed at a preset rising rate reaches the preset time, the acceleration enabling step shifts to the acceleration deactivating step.

9. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the vehicle acceleration control method according to any one of claims 1 to 8 when executing the program.

10. A computer-readable storage medium, on which a processor program is stored, wherein the processor program is configured to execute the vehicle acceleration control method according to any one of claims 1 to 8.

11. A vehicle characterized by comprising the electronic device of claim 9.