CN107762644B - Vehicle control method and device and vehicle with same - Google Patents

Vehicle control method and device and vehicle with same Download PDF

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Publication number
CN107762644B
CN107762644B CN201710787726.8A CN201710787726A CN107762644B CN 107762644 B CN107762644 B CN 107762644B CN 201710787726 A CN201710787726 A CN 201710787726A CN 107762644 B CN107762644 B CN 107762644B
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torque
rotating speed
engine
vehicle
control
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CN107762644A (en
Inventor
王浩
王晓欣
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Beiqi Foton Motor Co Ltd
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Beiqi Foton Motor Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D23/00—Controlling engines characterised by their being supercharged
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D29/00—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto
    • F02D29/02—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto peculiar to engines driving vehicles; peculiar to engines driving variable pitch propellers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D31/00—Use of speed-sensing governors to control combustion engines, not otherwise provided for
    • F02D31/001—Electric control of rotation speed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2200/00—Input parameters for engine control
    • F02D2200/02—Input parameters for engine control the parameters being related to the engine
    • F02D2200/10—Parameters related to the engine output, e.g. engine torque or engine speed
    • F02D2200/101—Engine speed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2200/00—Input parameters for engine control
    • F02D2200/50—Input parameters for engine control said parameters being related to the vehicle or its components
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2200/00—Input parameters for engine control
    • F02D2200/60—Input parameters for engine control said parameters being related to the driver demands or status
    • F02D2200/602—Pedal position
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2250/00—Engine control related to specific problems or objectives
    • F02D2250/18—Control of the engine output torque
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Vehicle Engines Or Engines For Specific Uses (AREA)

Abstract

The invention discloses a vehicle control method, a vehicle control device and a vehicle with the same, wherein the method comprises the following steps: when the vehicle meets a torque adjusting condition, acquiring the turbine rotating speed of a gearbox; obtaining a first torque control rotating speed and a second torque control rotating speed according to the rotating speed of the turbine, wherein the second torque control rotating speed is greater than the first torque control rotating speed; detecting the current rotating speed of the engine; when the current rotating speed is greater than the first torque control rotating speed, the engine torque is reduced to a preset torque, and when the current rotating speed is greater than the second torque control rotating speed, the engine torque is increased to a target torque. The method can reduce the torque output of the engine when the rotating speed of the engine is increased to a certain value corresponding to the rotating speed of the turbine, so that the impact between the clearances of the vehicle transmission system is relieved, the comfort of the vehicle is improved, the influence on the acceleration performance of the vehicle is reduced, and the driving experience of a user is improved.

Description

Vehicle control method and device and vehicle with same
Technical Field
The invention relates to the technical field of vehicles, in particular to a vehicle control method and device and a vehicle with the same.
Background
At present, three states of open, slip and lock exist in the actual running process of a vehicle in an automatic gearbox, the automatic gearbox is mostly in the open state at the low-speed low gear, and if the opening degree of an accelerator is reduced at the moment, the rotating speed of an engine is lower than the rotating speed of a turbine of the gearbox. It should be pointed out that, because of having the clearance that can't eliminate because of spare part processing and mutual assembly between each part of whole car transmission system, in case engine torque also begins to export when engine speed promotes, leads to the sudden change of output torque, makes to cause the impact between the transmission clearance easily, reduces to drive and takes experience.
In the related art, in order to reduce the impact between the clearances of the transmission system caused by the sudden change of the output torque of the engine, on one hand, the open state of the transmission is reduced through the calibration of a transmission controller, so that the frequency of entering the working condition is reduced; on the other hand, through the calibration of the engine controller, the rising speed of the engine torque is slowed down, and the impact under the working condition is further improved.
However, the related art cannot completely avoid the impact between the clearances of the drive trains, and the speed of slowing down the rise of the engine torque easily affects the torque response under other working conditions, so that the impact between the clearances of the drive trains cannot be effectively eliminated, the impact on the acceleration performance of the vehicle is increased, the comfort of the vehicle is reduced, and the driving experience of users is reduced.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art.
Therefore, an object of the present invention is to provide a control method for a vehicle, which can alleviate impact between vehicle driveline clearances, improve vehicle comfort, reduce influence on vehicle acceleration performance, and improve driving experience of a user.
Another object of the present invention is to provide a control apparatus for a vehicle.
It is a further object of the invention to propose a vehicle.
In order to achieve the above object, an embodiment of an aspect of the present invention provides a control method for a vehicle, including: when the vehicle meets a torque adjusting condition, acquiring the turbine rotating speed of a gearbox; obtaining a first torque control rotating speed and a second torque control rotating speed according to the turbine rotating speed, wherein the second torque control rotating speed is greater than the first torque control rotating speed; detecting the current rotating speed of the engine; when the current rotating speed is greater than the first torque control rotating speed, reducing the engine torque to a preset torque, and when the current rotating speed is greater than the second torque control rotating speed, increasing the engine torque to a target torque.
According to the control method of the vehicle, the first torque control rotating speed and the second torque control rotating speed are obtained according to the turbine rotating speed of the gearbox, so that when the rotating speed of the engine is larger than the first torque control rotating speed, the torque of the engine is reduced to a certain torque, when the rotating speed of the engine is larger than the second torque control rotating speed, the torque of the engine is increased to a target torque, when the rotating speed of the engine is increased to a certain value corresponding to the turbine rotating speed, the torque output of the engine is reduced, impact between gaps of a vehicle transmission system is relieved, comfort of the vehicle is improved, influences on acceleration performance of the vehicle are reduced, and driving experience of a user is improved.
Further, in an embodiment of the present invention, after detecting the current rotation speed of the engine, the method further includes: judging whether the current rotating speed is less than the turbine rotating speed or not; if so, reducing the engine torque when the current rotational speed is greater than the first torque control rotational speed.
Optionally, in one embodiment of the invention, the engine torque is reduced by fuel cut and/or retarding the firing angle.
Further, in one embodiment of the present invention, the increasing the engine torque to a target torque further comprises: collecting the current opening degree of an accelerator pedal; and obtaining the target torque according to the current opening and the current rotating speed.
Further, in one embodiment of the present invention, the torque regulation condition is that an accelerator pedal is triggered and the transmission is in an open state.
In order to achieve the above object, according to another aspect of the present invention, a control apparatus for a vehicle includes: the system comprises an acquisition module 100, a control module and a control module, wherein the acquisition module is used for acquiring the turbine rotating speed of a gearbox when a vehicle meets a torque regulation condition; an obtaining module 200, configured to obtain a first torque control rotation speed and a second torque control rotation speed according to the turbine rotation speed, where the second torque control rotation speed is greater than the first torque control rotation speed; a detection module 300 for detecting a current speed of the engine; the control module 400 is configured to reduce an engine torque to a preset torque when the current rotational speed is greater than the first torque control rotational speed, and increase the engine torque to a target torque when the current rotational speed is greater than the second torque control rotational speed.
According to the control device of the vehicle, the first torque control rotating speed and the second torque control rotating speed are obtained according to the turbine rotating speed of the gearbox, so that when the rotating speed of the engine is larger than the first torque control rotating speed, the torque of the engine is reduced to a certain torque, when the rotating speed of the engine is larger than the second torque control rotating speed, the torque of the engine is increased to a target torque, when the rotating speed of the engine is increased to a certain value corresponding to the turbine rotating speed, the torque output of the engine is reduced, impact between gaps of a vehicle transmission system is relieved, comfort of the vehicle is improved, influences on acceleration performance of the vehicle are reduced, and driving experience of a user is improved.
Further, in an embodiment of the present invention, the method further includes: and the judging module is used for judging whether the current rotating speed is less than the turbine rotating speed or not, so that the control module reduces the torque of the engine when the current rotating speed is less than the turbine rotating speed.
Optionally, in one embodiment of the present invention, the control module 400 reduces the engine torque by fuel cut and/or retarding a spark angle.
Further, in one embodiment of the present invention, the control module 400 includes: the acquisition unit is used for acquiring the current opening degree of the accelerator pedal; and the acquisition unit is used for acquiring the target torque according to the current opening and the current rotating speed.
In order to achieve the above object, an embodiment of another aspect of the present invention provides a vehicle including the control device of the vehicle. This vehicle can obtain first torque control rotational speed and second torque control rotational speed according to the turbine rotational speed of gearbox, thereby when engine speed is greater than first torque control rotational speed, reduce engine torque to certain moment of torsion, when engine speed is greater than second torque control rotational speed, increase engine torque to target moment of torsion, when the realization improves to the definite value that turbine speed corresponds at engine speed, reduce the torque output of engine, not only slow down the impact between the vehicle drive line clearance, improve the travelling comfort of vehicle, and reduce the influence to vehicle acceleration performance, promote user's driving experience.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a flowchart of a control method of a vehicle according to an embodiment of the invention;
FIG. 2 is a flow chart of a method of controlling a vehicle according to an embodiment of the present invention;
FIG. 3 is a schematic illustration of vehicle torque control according to one embodiment of the present invention;
fig. 4 is a schematic configuration diagram of a control apparatus of a vehicle according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
A control method and apparatus of a vehicle and a vehicle having the same according to an embodiment of the present invention will be described below with reference to the accompanying drawings, and first, a control method of a vehicle according to an embodiment of the present invention will be described with reference to the accompanying drawings.
Fig. 1 is a flowchart of a control method of a vehicle according to an embodiment of the present invention.
As shown in fig. 1, the control method of the vehicle includes the steps of:
in step S101, when the vehicle satisfies a torque adjustment condition, a turbine speed of the transmission is acquired.
Alternatively, in one embodiment of the invention, the torque modulation condition may be that the accelerator pedal is triggered and the gearbox is open.
It will be appreciated that the torque adjustment condition is that the accelerator pedal is triggered and the transmission is open as shown in fig. 2, and the engine torque begins to be output while the engine speed is increasing, so that a sudden change in the output torque occurs, and therefore once the engine speed is lower than the transmission turbine speed, the engine torque needs to be adjusted to avoid a shock. In addition, when the engine speed exceeds the turbine speed, the vehicle is no longer in a low speed state, the gearbox is not in an open state, the output torque of the engine cannot be suddenly changed, the vehicle cannot generate impact between transmission line clearances due to the sudden change of the output torque, and the engine torque is not required to be adjusted.
In addition, whether the accelerator pedal is triggered or not can be detected, whether a driver steps on the accelerator or not can be judged through the opening degree of the accelerator, whether the accelerator pedal is triggered or not can be further determined, and the mode of detecting the state of the gearbox can be various, so that the redundancy is reduced, and the mode is not particularly limited.
In step S102, a first torque control rotational speed and a second torque control rotational speed are obtained according to the turbine rotational speed, wherein the second torque control rotational speed is greater than the first torque control rotational speed.
For example, as shown in fig. 3, the first torque control speed and the second torque control speed may be obtained according to a wave pattern of the torque control speeds, such as when the engine speed is about to cross the turbine speed of the transmission, there is an instantaneous point, such as the first torque control speed (for example, the turbine speed of the transmission is 980r/min, and the corresponding first torque control speed may be 950r/min), when the engine speed reaches the first torque control speed, the engine torque is reduced, so as to avoid the impact on the vehicle driveline as much as possible when the engine speed crosses the turbine speed of the transmission; after the engine speed exceeds the gearbox turbine speed, an instantaneous point also exists, such as a second torque control speed (for example, the gearbox turbine torque is 980r/min, and the corresponding second torque control speed can be 1000r/min), the engine torque is increased, so that after the engine speed crosses the gearbox turbine speed, the target torque is restored, and the driving experience is prevented from being influenced.
That is, when the accelerator pedal is triggered and the transmission is in an open state, the engine torque begins to be output while the engine speed is increased, and the control speed corresponding to the torque adjustment can be determined according to the turbine speed, so that whether the engine speed is about to cross the turbine speed of the transmission and needs to be reduced can be determined according to the first torque control speed, and whether the turbine speed of the transmission is already crossed and needs to be increased is determined according to the second torque control speed.
In step S103, the current rotational speed of the engine is detected.
In step S104, the engine torque is reduced to a preset torque when the current rotation speed is greater than the first torque control rotation speed, and the engine torque is increased to a target torque when the current rotation speed is greater than the second torque control rotation speed.
In one embodiment of the present invention, after detecting the current rotation speed of the engine, the method further includes: judging whether the current rotating speed is less than the rotating speed of the turbine; if so, the engine torque is reduced when the current speed is greater than the first torque control speed.
That is, if the front rotational speed is greater than the turbine rotational speed, no shock is caused, and the engine torque does not need to be controlled; if the current rotating speed is less than the turbine rotating speed, the rotating speed of the engine is increased and the torque of the engine also starts to be output, so that the output torque is suddenly changed, and the torque of the engine needs to be controlled to effectively eliminate the impact between the clearances of the transmission system.
Alternatively, in one embodiment of the present invention, the method of embodiments of the present invention may reduce engine torque by fuel cut and/or retarding spark angle.
It is understood that, when the engine speed is increased and the engine torque is also output, so that a sudden change of the output torque occurs, and therefore the engine torque needs to be reduced, the engine torque may be reduced in many ways, such as reducing the engine torque by fuel cut, reducing the engine torque by retarding the ignition angle, reducing the engine torque by fuel cut and retarding the ignition angle, or reducing the intake air, and the like, and is not limited in particular. The fuel cut-off means that when a vehicle with a transmission runs, if an accelerator pedal is triggered and a transmission case is in an open state and the rotating speed of an engine is lower than the rotating speed of a turbine of the transmission case, a gasoline injection system receives a torque building signal sent by the transmission case, so that the rotating speed of the engine is reduced by temporarily stopping oil injection of individual cylinders, and the impact between gaps of a transmission system is relieved; the ignition angle is an angle through which the crankshaft rotates during a period from the time of ignition until the piston reaches the compression top dead center, and the engine torque can be reduced by retarding the ignition angle, and therefore, in order to reduce redundancy, it is not described in detail.
Further, in one embodiment of the present invention, increasing the engine torque to the target torque further comprises: collecting the current opening degree of an accelerator pedal; and obtaining the target torque according to the current opening and the current rotating speed.
It will be appreciated that upon determining the turbine speed that has traversed the transmission, engine torque is restored, thereby reducing the effect on vehicle acceleration performance. The engine torque is restored to the target torque, and the target torque can obtain the target torque of the current state according to the current opening degree of the accelerator pedal and the engine speed.
Specifically, the engine torque starts to be output while the engine speed is increased, so that a sudden change in the output torque occurs, which causes a shock between the driveline lash, so that the engine torque needs to be adjusted at this time. As shown in fig. 2, the engine torque is adjusted under the conditions that an accelerator pedal is triggered, a gearbox is in an open state, and the engine speed is lower than the gearbox turbine speed, if all three conditions are met, the engine torque needs to be adjusted, and if one of the three conditions cannot be met, the engine torque does not need to be adjusted.
According to the control method of the vehicle provided by the embodiment of the invention, the first torque control rotating speed and the second torque control rotating speed can be obtained according to the turbine rotating speed of the gearbox, so that when the rotating speed of the engine is greater than the first torque control rotating speed, the torque of the engine is reduced to a certain torque, and when the rotating speed of the engine is greater than the second torque control rotating speed, the torque of the engine is increased to a target torque, so that when the rotating speed of the engine is increased to a certain value corresponding to the turbine rotating speed, the torque output of the engine is reduced, the impact between the gaps of a vehicle transmission system is relieved, the comfort of the vehicle is improved, the influence on the acceleration performance of the vehicle is reduced, and the.
Next, a control device of a vehicle proposed according to an embodiment of the invention is described with reference to the drawings.
Fig. 4 is a schematic configuration diagram of a control device of a vehicle according to an embodiment of the present invention.
As shown in fig. 4, the control device of the vehicle includes: an acquisition module 100, an acquisition module 200, a detection module 300, and a control module 400.
The acquisition module 100 is configured to acquire a turbine speed of a transmission when a vehicle satisfies a torque adjustment condition. The obtaining module 200 is configured to obtain a first torque control rotation speed and a second torque control rotation speed according to a turbine rotation speed, where the second torque control rotation speed is greater than the first torque control rotation speed. The detection module 300 is used to detect a current speed of the engine. The control module 400 is configured to reduce the engine torque to a predetermined torque when the current rotational speed is greater than the first torque control rotational speed, and increase the engine torque to a target torque when the current rotational speed is greater than the second torque control rotational speed. The device 10 of the embodiment of the invention can reduce the torque output of the engine when the rotating speed of the engine is increased to a certain value corresponding to the rotating speed of the turbine, thereby slowing down the impact between the clearances of the vehicle transmission system, improving the comfort of the vehicle, reducing the influence on the acceleration performance of the vehicle and improving the driving experience of users.
Further, in one embodiment of the present invention, the apparatus 10 of the embodiment of the present invention further comprises: and the judging module is used for judging whether the current rotating speed is less than the rotating speed of the turbine or not, so that the torque of the engine is reduced when the current rotating speed is less than the rotating speed of the turbine by the control module.
Alternatively, in one embodiment of the invention, the control module 400 may reduce the engine torque by fuel cut and/or retarding the firing angle.
Further, in one embodiment of the present invention, the control module 400 includes: the acquisition unit is used for acquiring the current opening degree of the accelerator pedal; and the acquisition unit is used for obtaining the target torque according to the current opening and the current rotating speed.
It should be noted that the foregoing explanation of the embodiment of the control method for the vehicle is also applicable to the control device for the vehicle in this embodiment, and the details are not repeated here.
According to the control device of the vehicle, provided by the embodiment of the invention, the first torque control rotating speed and the second torque control rotating speed can be obtained according to the turbine rotating speed of the gearbox, so that when the rotating speed of the engine is greater than the first torque control rotating speed, the torque of the engine is reduced to a certain torque, and when the rotating speed of the engine is greater than the second torque control rotating speed, the torque of the engine is increased to a target torque, so that when the rotating speed of the engine is increased to a certain value corresponding to the turbine rotating speed, the torque output of the engine is reduced, the impact between the gaps of a vehicle transmission system is relieved, the comfort of the vehicle is improved, the influence on the acceleration performance of the vehicle is reduced, and.
In addition, the embodiment of the invention also provides a vehicle, and the vehicle comprises the control device of the vehicle. This vehicle can obtain first torque control rotational speed and second torque control rotational speed according to the turbine rotational speed of gearbox, thereby when engine speed is greater than first torque control rotational speed, reduce engine torque to certain moment of torsion, when engine speed is greater than second torque control rotational speed, increase engine torque to target moment of torsion, when the realization improves to the definite value that turbine speed corresponds at engine speed, reduce the torque output of engine, not only slow down the impact between the vehicle drive line clearance, improve the travelling comfort of vehicle, and reduce the influence to vehicle acceleration performance, promote user's driving experience.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
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, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims (10)

1. A control method of a vehicle, characterized by comprising the steps of:
when the vehicle meets a torque adjusting condition, acquiring the turbine rotating speed of a gearbox;
obtaining a first torque control rotating speed corresponding to an instant point at which the rotating speed of the engine is about to pass through the rotating speed of the turbine and a second torque control rotating speed corresponding to an instant point after the rotating speed of the engine exceeds the rotating speed of the turbine according to the rotating speed of the turbine, wherein the second torque control rotating speed is greater than the first torque control rotating speed;
detecting the current rotating speed of the engine; and
when the current rotating speed is greater than the first torque control rotating speed, reducing the engine torque to a preset torque, and when the current rotating speed is greater than the second torque control rotating speed, increasing the engine torque to a target torque.
2. The control method of a vehicle according to claim 1, characterized by, after detecting the current rotation speed of the engine, further comprising:
judging whether the current rotating speed is less than the turbine rotating speed or not;
if so, reducing the engine torque when the current rotational speed is greater than the first torque control rotational speed.
3. The control method of a vehicle according to claim 1, characterized in that the engine torque is reduced by fuel cut and/or retarding an ignition angle.
4. The control method of a vehicle according to claim 1, wherein said increasing the engine torque to a target torque further comprises:
collecting the current opening degree of an accelerator pedal;
and obtaining the target torque according to the current opening and the current rotating speed.
5. The control method of a vehicle according to any one of claims 1 to 4, characterized in that the torque regulation condition is that an accelerator pedal is activated and the transmission is in an open state.
6. A control apparatus of a vehicle, characterized by comprising:
the system comprises an acquisition module (100) for acquiring the turbine speed of the gearbox when the vehicle meets a torque regulation condition;
the acquisition module (200) is used for obtaining a first torque control rotating speed corresponding to an instant point at which the rotating speed of the engine is about to pass through the rotating speed of the turbine and a second torque control rotating speed corresponding to an instant point after the rotating speed of the engine exceeds the rotating speed of the turbine according to the rotating speed of the turbine, wherein the second torque control rotating speed is greater than the first torque control rotating speed;
the detection module (300) is used for detecting the current rotating speed of the engine; and
a control module (400) configured to reduce an engine torque to a preset torque when the current rotational speed is greater than the first torque control rotational speed, and to increase the engine torque to a target torque when the current rotational speed is greater than the second torque control rotational speed.
7. The control device of a vehicle according to claim 6, characterized by further comprising:
and the judging module is used for judging whether the current rotating speed is less than the turbine rotating speed or not, so that the control module reduces the torque of the engine when the current rotating speed is less than the turbine rotating speed.
8. The control device of the vehicle according to claim 6, characterized in that the control module (400) reduces the engine torque by fuel cut and/or retarding an ignition angle.
9. The control device of a vehicle according to any one of claims 6-8, characterized in that the control module (400) comprises:
the acquisition unit is used for acquiring the current opening degree of the accelerator pedal;
and the acquisition unit is used for acquiring the target torque according to the current opening and the current rotating speed.
10. A vehicle, characterized by comprising: the control device of the vehicle according to any one of claims 6 to 9.
CN201710787726.8A 2017-09-04 2017-09-04 Vehicle control method and device and vehicle with same Active CN107762644B (en)

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