CN114876656B - Control method, device, equipment and storage medium for improving power shortage - Google Patents

Control method, device, equipment and storage medium for improving power shortage Download PDF

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Publication number
CN114876656B
CN114876656B CN202210401719.0A CN202210401719A CN114876656B CN 114876656 B CN114876656 B CN 114876656B CN 202210401719 A CN202210401719 A CN 202210401719A CN 114876656 B CN114876656 B CN 114876656B
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Prior art keywords
engine
accelerator pedal
current
fuel ratio
pedal opening
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CN114876656A (en
Inventor
秦琨
潘锦双
兰江
黄国海
吴颂
黄真
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Dongfeng Liuzhou Motor Co Ltd
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Dongfeng Liuzhou 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
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/14—Introducing closed-loop corrections
    • F02D41/1401—Introducing closed-loop corrections characterised by the control or regulation method
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/14—Introducing closed-loop corrections
    • F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
    • F02D41/1444—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases
    • F02D41/1454—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being an oxygen content or concentration or the air-fuel ratio
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/14—Introducing closed-loop corrections
    • F02D41/1401—Introducing closed-loop corrections characterised by the control or regulation method
    • F02D2041/1433—Introducing closed-loop corrections characterised by the control or regulation method using a model or simulation of the system
    • 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
    • F02D2200/1002—Output torque
    • F02D2200/1004—Estimation of the output torque
    • 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
    • F02D2200/60—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
    • Y02T10/40—Engine management systems
    • 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
    • Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
    • Y02T10/84—Data processing systems or methods, management, administration

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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)
  • Combined Controls Of Internal Combustion Engines (AREA)

Abstract

The invention discloses a control method, a device, equipment and a storage medium for improving power shortage, and belongs to the technical field of automobiles. The method comprises the steps of obtaining the current opening of an accelerator pedal and the rotating speed of an engine; obtaining a required torque according to the current accelerator pedal opening and the engine speed; comparing the required torque with a model torque; when the required torque is greater than or equal to the model torque, determining that the engine is in a preset state, and recording the duration of the engine in the preset state; when the current accelerator pedal opening is larger than or equal to a preset accelerator pedal opening threshold value and the duration reaches a preset delay time threshold value, the power of the engine is improved, the condition of insufficient power in a long-uphill or heavy-load high-speed running process is improved, the effect of improving the insufficient power of the engine is good, the stable operation of the later-stage engine is ensured, the power performance of the vehicle is improved, and the drivability of the vehicle is optimized.

Description

Control method, device, equipment and storage medium for improving power shortage
Technical Field
The present invention relates to the field of automotive technologies, and in particular, to a control method, apparatus, device, and storage medium for improving power shortage.
Background
In the existing vehicle carrying the gasoline engine, in the process of long uphill or heavy-load high-speed running, the power of the automobile engine is insufficient, so that the phenomenon of fire shaking is caused, and the vehicle cannot stably run.
When the power of the existing vehicle engine is insufficient, only the insufficient power reminding is carried out, and the specific improvement and control of the insufficient power are not involved, so that the effect of improving the insufficient power of the engine is poor.
Disclosure of Invention
The invention mainly aims to provide a control method, a control device and a storage medium for improving insufficient power, and aims to solve the technical problem that the effect of improving insufficient power of an engine is poor in the prior art.
To achieve the above object, the present invention provides a control method for improving power shortage, the method comprising the steps of:
acquiring the current opening degree of an accelerator pedal and the rotating speed of an engine;
obtaining a required torque according to the current accelerator pedal opening and the engine speed;
comparing the required torque with a model torque;
when the required torque is greater than or equal to the model torque, determining that the engine is in a preset state, and recording the duration of the engine in the preset state;
and when the current accelerator pedal opening is larger than or equal to a preset accelerator pedal opening threshold and the duration reaches a preset delay time threshold, the power of the engine is increased.
Optionally, when the current accelerator pedal opening is greater than or equal to a preset accelerator pedal opening threshold and the duration reaches a preset delay time threshold, increasing power of the engine includes:
acquiring the current air-fuel ratio of the engine when the current accelerator pedal opening is greater than or equal to a preset accelerator pedal opening threshold and the duration reaches a preset delay time threshold;
adjusting the current air-fuel ratio based on a preset air-fuel ratio to obtain a target air-fuel ratio;
obtaining a target torque based on the target air-fuel ratio;
and carrying out power lifting on an engine of the target vehicle through the target torque.
Optionally, before comparing the required torque with the model torque, the method further includes:
acquiring a current air-fuel ratio and a current ignition angle of a target vehicle;
and obtaining the model torque corresponding to the current air-fuel ratio and the current ignition angle based on a first corresponding relation, wherein the first corresponding relation is the corresponding relation between the air-fuel ratio and the ignition angle and the model torque.
Optionally, the obtaining the model torque corresponding to the current air-fuel ratio and the current ignition angle based on a first corresponding relation, where before the first corresponding relation is the corresponding relation between the air-fuel ratio and the ignition angle and the model torque, the method further includes:
acquiring a historical air-fuel ratio and a historical ignition angle of an engine;
calculating a historical model torque of the engine according to the historical air-fuel ratio and the historical ignition angle;
a first correspondence between air-fuel ratio and firing angle and model torque is determined based on the historical air-fuel ratio, the historical firing angle, and the historical model torque.
Optionally, the obtaining the required torque according to the current accelerator pedal opening and the engine speed includes:
acquiring a second corresponding relation between the opening of an accelerator pedal, the rotating speed of the engine and the required torque;
and obtaining the required torque corresponding to the current accelerator pedal opening and the engine speed based on the second corresponding relation.
Optionally, before the second correspondence between the accelerator pedal opening and the engine speed and the required torque is obtained, the method further includes:
acquiring a historical accelerator pedal opening and a historical engine speed;
calculating historical demand torque according to the historical accelerator pedal opening and the historical engine speed;
and determining a second corresponding relation between the accelerator pedal opening, the engine rotating speed and the required torque based on the historical accelerator pedal opening, the historical engine rotating speed and the historical required torque.
Optionally, after the power of the engine is increased when the current accelerator pedal opening is greater than or equal to a preset accelerator pedal opening threshold and the duration reaches a preset delay time threshold, the method further includes:
acquiring the opening degree of a target pedal after power lifting;
and stopping power lifting of the engine of the target vehicle when the target pedal opening is smaller than the preset accelerator pedal opening threshold.
In addition, in order to achieve the above object, the present invention also proposes a control device for improving power shortage, the control device for improving power shortage comprising:
the acquisition module is used for acquiring the current opening of the accelerator pedal and the engine speed;
the acquisition module is further used for acquiring a required torque according to the current accelerator pedal opening and the engine speed;
the comparison module is used for comparing the required torque with the model torque;
the timing module is used for judging that the engine is in a preset state when the required torque is greater than or equal to the model torque and recording the duration of the engine in the preset state;
and the control module is used for improving the power of the engine when the current accelerator pedal opening is greater than or equal to a preset accelerator pedal opening threshold and the duration reaches a preset delay time threshold.
In addition, in order to achieve the above object, the present invention also proposes a control apparatus for improving power shortage, the control apparatus for improving power shortage comprising: a memory, a processor and a control program for improving the power shortage stored on the memory and executable on the processor, the control program for improving the power shortage being configured to implement the steps of the control method for improving the power shortage as described above.
In addition, in order to achieve the above object, the present invention also proposes a storage medium having stored thereon a control program for improving power shortage, which when executed by a processor, implements the steps of the control method for improving power shortage as described above.
The method comprises the steps of obtaining the current opening of an accelerator pedal and the rotating speed of an engine; obtaining a required torque according to the current accelerator pedal opening and the engine speed; comparing the required torque with a model torque; when the required torque is greater than or equal to the model torque, determining that the engine is in a preset state, and recording the duration of the engine in the preset state; when the current accelerator pedal opening is larger than or equal to a preset accelerator pedal opening threshold value and the duration reaches a preset delay time threshold value, the power of the engine is improved, the condition of insufficient power in a long-uphill or heavy-load high-speed running process is improved, the effect of improving the insufficient power of the engine is good, the stable operation of the later-stage engine is ensured, the power performance of the vehicle is improved, and the drivability of the vehicle is optimized.
Drawings
FIG. 1 is a schematic diagram of a control device for improving power shortage in a hardware operating environment according to an embodiment of the present invention;
FIG. 2 is a flow chart of a first embodiment of a method for controlling power shortage in accordance with the present invention;
FIG. 3 is a schematic general flow chart of a first embodiment of a control method for improving power shortage according to the present invention;
FIG. 4 is a flow chart of a second embodiment of a method for controlling power shortage in accordance with the present invention;
FIG. 5 is a flow chart of a third embodiment of a method for controlling power shortage in accordance with the present invention;
FIG. 6 is a flow chart of a fourth embodiment of a method for controlling power shortage in accordance with the present invention;
fig. 7 is a block diagram showing the structure of a first embodiment of the control device for improving power shortage of the present invention.
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a control device for improving power shortage in a hardware operation environment according to an embodiment of the present invention.
As shown in fig. 1, the control apparatus for improving power shortage may include: a processor 1001, such as a central processing unit (Central Processing Unit, CPU), a communication bus 1002, a user interface 1003, a network interface 1004, a memory 1005. Wherein the communication bus 1002 is used to enable connected communication between these components. The user interface 1003 may include a Display, an input unit such as a Keyboard (Keyboard), and the optional user interface 1003 may further include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a Wireless interface (e.g., a Wireless-Fidelity (Wi-Fi) interface). The Memory 1005 may be a high-speed random access Memory (Random Access Memory, RAM) Memory or a stable nonvolatile Memory (NVM), such as a disk Memory. The memory 1005 may also optionally be a storage device separate from the processor 1001 described above.
It will be appreciated by those skilled in the art that the configuration shown in FIG. 1 is not limiting of the control device for improving power starvation, and may include more or fewer components than shown, or certain components may be combined, or a different arrangement of components.
As shown in fig. 1, an operating system, a network communication module, a user interface module, and a control program for improving power shortage may be included in the memory 1005 as one type of storage medium.
In the control device for improving power shortage shown in fig. 1, the network interface 1004 is mainly used for data communication with a network server; the user interface 1003 is mainly used for data interaction with a user; the processor 1001 and the memory 1005 in the apparatus for improving power shortage according to the present invention may be provided in the apparatus for improving power shortage, which invokes the control program for improving power shortage stored in the memory 1005 through the processor 1001, and executes the control method for improving power shortage according to the embodiment of the present invention.
An embodiment of the present invention provides a control method for improving power shortage, referring to fig. 2, fig. 2 is a schematic flow chart of a first embodiment of the control method for improving power shortage of the present invention.
In this embodiment, the control method for improving the power shortage includes the following steps:
step S10: and acquiring the current opening degree of an accelerator pedal and the rotating speed of the engine.
It should be noted that, the execution body of the present embodiment is an apparatus for improving the power shortage control, and may be other apparatuses capable of realizing the same or similar functions, and the present embodiment is not limited thereto, and the present embodiment is described taking an apparatus for improving the power shortage control as an example.
In a specific implementation, the current accelerator pedal opening is the degree to which the accelerator pedal is depressed when the driver runs the vehicle, and may be understood as the throttle opening, which may be calculated according to the current running condition and the vehicle speed, etc., to obtain the current accelerator pedal opening, or may be other ways of obtaining the current accelerator pedal opening, which is not limited in this embodiment. The engine speed can be measured according to a sensor mounted on the vehicle to obtain the real-time speed of the engine of the vehicle.
Step S20: and obtaining the required torque according to the current accelerator pedal opening and the engine speed.
It can be understood that the mapping relation between the current accelerator pedal opening and the engine speed and the required torque is established, a great deal of experiments can be performed in the earlier stage to establish the relation between the current accelerator pedal opening and the engine speed and the required torque, and the required torque corresponding to the current accelerator pedal opening and the engine speed is obtained through the relation between the current accelerator pedal opening and the engine speed and the required torque. The required torque refers to the torque required by the driver to run the control vehicle under the current working condition, such as 180n.m, 200n.m, etc., and the comparison of the present embodiment is not limited.
Step S30: the demand torque is compared to a model torque.
In this embodiment, the model torque is the actual torque of the vehicle, and may be obtained by calculating the air-fuel ratio and the ignition angle of the engine of the vehicle at this time, and by comparing the driver demand torque with the model torque, it may be determined whether the engine of the vehicle has a power shortage phenomenon, so that the power improvement control is facilitated when the engine has a power shortage.
Step S40: and when the required torque is greater than or equal to the model torque, determining that the engine is in a preset state, and recording the duration of the engine in the preset state.
The preset state refers to a state in which the engine is under-powered, when the required torque is greater than or equal to the model torque, it is indicated that the actual torque of the vehicle does not meet the torque required by the driver at this time, so that the engine is under-powered, for example, the required torque of the driver is 200n.m, the calculated model torque is 170n.m, and the model torque is smaller than the required torque, so that the engine is determined to be under-powered, when the engine is under-powered, the engine starts under-powering timing, and the duration of the engine in the preset state may be 10s, 30s, 40s, etc., which is not limited in this embodiment.
Step S50: and when the current accelerator pedal opening is larger than or equal to a preset accelerator pedal opening threshold and the duration reaches a preset delay time threshold, the power of the engine is increased.
The preset accelerator pedal opening threshold is an accelerator pedal opening value for lifting power, for example, 60%, 85%, 90%, and this embodiment is not limited thereto, and the preset delay time threshold may be 20s, 30s, 50s, etc., which is illustrated by 85% in this embodiment, and 30s in this embodiment. The duration reaching the preset delay time threshold means that the duration is greater than or equal to the preset delay time threshold.
In this embodiment, when the current accelerator pedal opening is greater than or equal to 85% and the duration of the power shortage is greater than or equal to 30s, the engine of the vehicle may be power-lifted, and the power lifting may include controlling fuel injection by the vehicle ECU (Electronic Control Unit ), and specific operation of fuel injection may be controlled according to the air-fuel ratio of the vehicle, so as to lift the power of the engine.
As shown in fig. 3, fig. 3 is a general flow chart of a control method for improving power shortage in the present embodiment, an ECU of a vehicle obtains a required torque and a model torque by monitoring a current air-fuel ratio, a current ignition angle and a current accelerator pedal opening of an engine, compares the required torque with the model torque, determines that the engine is in a power shortage state when the model torque is smaller than the required torque, starts timing of power shortage, and exits a power lifting program when the model torque is equal to or greater than the required torque. When the engine is in a power shortage state, starting power shortage timing, judging whether the current accelerator pedal opening is larger than or equal to a preset accelerator pedal opening threshold, and when the current accelerator pedal opening is smaller than the preset accelerator pedal opening threshold or the power shortage timing is smaller than a preset delay time threshold, exiting the power lifting program. When the current accelerator pedal opening is greater than or equal to 85% of a preset accelerator pedal opening threshold and the power shortage timing is greater than or equal to 30s of a preset delay time threshold, controlling the engine to enter a power lifting program, controlling oil injection by the ECU, enriching the current air-fuel ratio of the engine to a preset air-fuel ratio of 12.5, feeding back an oxygen sensor signal to the ECU for actual air-fuel ratio calculation, and adjusting the current actual air-fuel ratio by the ECU according to the preset air-fuel ratio to realize closed-loop control. And acquiring a target accelerator pedal opening after power lifting, judging whether the target accelerator pedal opening is smaller than a preset accelerator pedal opening threshold value by 85 percent, and finishing engine power lifting and exiting a power lifting program when the target accelerator pedal opening is smaller than the preset accelerator pedal opening threshold value by 85 percent.
The embodiment obtains the current opening degree of the accelerator pedal and the engine speed; obtaining a required torque according to the current accelerator pedal opening and the engine speed; comparing the required torque with a model torque; when the required torque is greater than or equal to the model torque, determining that the engine is in a preset state, and recording the duration of the engine in the preset state; when the current accelerator pedal opening is larger than or equal to a preset accelerator pedal opening threshold value and the duration reaches a preset delay time threshold value, the power of the engine is improved, the condition of insufficient power in a long-uphill or heavy-load high-speed running process is improved, the effect of improving the insufficient power of the engine is good, the stable operation of the later-stage engine is ensured, the power performance of the vehicle is improved, and the drivability of the vehicle is optimized.
Referring to fig. 4, fig. 4 is a flowchart of a second embodiment of a control method for improving power shortage according to the present invention.
Based on the above-mentioned first embodiment, the step S50 of the control method for improving the power shortage of the present embodiment specifically includes:
step S501: and when the current accelerator pedal opening is larger than or equal to a preset accelerator pedal opening threshold and the duration reaches a preset delay time threshold, acquiring the current air-fuel ratio of the engine.
It should be appreciated that when the current accelerator pedal opening is greater than or equal to the preset accelerator pedal opening threshold and the duration of the under-power timer exceeds the preset delay time threshold, the vehicle is required to perform power boost, the ECU of the vehicle may control fuel injection to adjust the air-fuel ratio of the engine, so that the current air-fuel ratio of the engine needs to be obtained, the air-fuel ratio may be measured by an oxygen sensor mounted on the vehicle, and when the ECU receives an oxygen sensor signal, an actual air-fuel ratio calculation is performed according to the oxygen sensor signal to obtain the current air-fuel ratio of the engine.
Step S502: and adjusting the current air-fuel ratio based on a preset air-fuel ratio to obtain a target air-fuel ratio.
The preset air-fuel ratio refers to the air-fuel ratio corresponding to the power boost of the engine, and may be 10, 11, 12.5, etc., and this embodiment is not limited thereto, and the embodiment is described taking 12.5 as an example. The current air-fuel ratio can be adjusted through the preset air-fuel ratio, namely, the current air-fuel ratio of the engine is enriched to the preset air-fuel ratio, and the target air-fuel ratio is obtained through real-time adjustment of the current air-fuel ratio and is smaller than or equal to the preset air-fuel ratio. And adjusting the current air-fuel ratio in real time based on the preset air-fuel ratio to realize closed-loop control.
Step S503: a target torque is obtained based on the target air-fuel ratio.
When the current air-fuel ratio is adjusted to obtain the target air-fuel ratio, a target torque corresponding to the target air-fuel ratio, which is the real-time torque of the engine after power enrichment, can be obtained according to the corresponding relation between the air-fuel ratio and the model torque.
Step S504: and carrying out power lifting on an engine of the target vehicle through the target torque.
In a specific implementation, after the target torque is obtained, the target vehicle can be controlled through the target torque so as to achieve power lifting of an engine of the target vehicle, increase the real-time torque of the engine and achieve power lifting of the engine.
Further, after the engine is power-lifted through the target torque, the opening degree of the target pedal after power lifting can be obtained; and stopping power lifting of the engine of the target vehicle when the target pedal opening is smaller than the preset accelerator pedal opening threshold.
The target pedal opening refers to an accelerator pedal opening after the engine is subjected to power lifting, the target pedal opening is compared with a preset accelerator pedal opening threshold, when the target pedal opening is smaller than the preset accelerator pedal opening threshold, the power shortage of the engine is improved, the engine power lifting control of the target vehicle can be stopped, the engine power shortage control program is completed, the step of detecting the current air-fuel ratio, the current ignition angle and the required torque of the target vehicle is returned, and the closed-loop control of the engine power lifting is realized. If the target pedal opening is greater than or equal to the preset accelerator pedal opening threshold, continuing to adjust the air-fuel ratio of the engine until the adjusted air-fuel ratio obtains a corresponding adjusted target torque, and the target accelerator pedal opening corresponding to the adjusted target torque is smaller than the preset accelerator pedal opening threshold.
In the embodiment, when the current accelerator pedal opening is greater than or equal to a preset accelerator pedal opening threshold and the duration reaches a preset delay time threshold, the current air-fuel ratio of the engine is obtained; adjusting the current air-fuel ratio based on a preset air-fuel ratio to obtain a target air-fuel ratio; obtaining a target torque based on the target air-fuel ratio; and carrying out power lifting on an engine of the target vehicle through the target torque.
Referring to fig. 5, fig. 5 is a schematic flow chart of a third embodiment of a control method for improving power shortage according to the present invention.
Based on the above-described first embodiment, the control method for improving the power shortage of the present embodiment further includes, before the step S30:
step S31: the current air-fuel ratio and the current ignition angle of the target vehicle are acquired.
It should be noted that, the current air-fuel ratio of the target vehicle may be measured according to the oxygen sensor, and the current ignition angle may be calculated according to the engine condition of the target vehicle.
Step S32: and obtaining the model torque corresponding to the current air-fuel ratio and the current ignition angle based on a first corresponding relation, wherein the first corresponding relation is the corresponding relation between the air-fuel ratio and the ignition angle and the model torque.
It is to be understood that the first correspondence relationship refers to a correspondence relationship between the air-fuel ratio and the ignition angle and the model torque, and that the model torque of the target vehicle can be obtained from the first correspondence relationship after the current air-fuel ratio and the current ignition angle of the target vehicle are obtained. The step of obtaining the first corresponding relation specifically includes: acquiring a historical air-fuel ratio and a historical ignition angle of an engine; calculating a historical model torque of the engine according to the historical air-fuel ratio and the historical ignition angle; a first correspondence between air-fuel ratio and firing angle and model torque is determined based on the historical air-fuel ratio, the historical firing angle, and the historical model torque.
Specifically, the historical air-fuel ratio of the engine refers to a large number of air-fuel ratio samples obtained by earlier tests, the historical firing angle refers to a large number of firing angle samples obtained by earlier tests, and the historical model torque at the time of the historical air-fuel ratio and the historical firing angle working conditions is measured, a first correspondence between the air-fuel ratio and the firing angle and the model torque is established based on the historical air-fuel ratio, the historical firing angle and the historical model torque, a mapping table is established by establishing the historical air-fuel ratio, the historical firing angle and the historical model torque, and the air-fuel ratio data in the historical air-fuel ratio, the firing angle data in the historical firing angle and the model torque data in the historical model torque are filled in the table in a one-to-one correspondence manner, so that a mapping table with the first correspondence is obtained, and when the current air-fuel ratio and the current firing angle are obtained, the model torque with the first correspondence with the current air-fuel ratio and the current firing angle can be obtained by querying the mapping table.
The present embodiment obtains the current air-fuel ratio and the current ignition angle of the target vehicle; and obtaining the model torque corresponding to the current air-fuel ratio and the current ignition angle based on a first corresponding relation, wherein the first corresponding relation is the corresponding relation between the air-fuel ratio, the ignition angle and the model torque, and the accurate model torque can be obtained rapidly according to the first corresponding relation.
Referring to fig. 6, fig. 6 is a flowchart of a fourth embodiment of a control method for improving power shortage according to the present invention.
Based on the above-mentioned first embodiment, the control method for improving the power shortage in this embodiment includes the following steps:
step S201: and obtaining a second corresponding relation between the opening of the accelerator pedal, the rotating speed of the engine and the required torque.
It should be understood that the second correspondence is a second correspondence between an accelerator pedal opening and an engine speed and a required torque, and the specific step of obtaining the second correspondence includes: acquiring a historical accelerator pedal opening and a historical engine speed; calculating historical demand torque according to the historical accelerator pedal opening and the historical engine speed; and determining a second corresponding relation between the accelerator pedal opening, the engine rotating speed and the required torque based on the historical accelerator pedal opening, the historical engine rotating speed and the historical required torque.
The historical accelerator pedal opening is accelerator pedal opening sample data which are measured by testing the target vehicle in the earlier stage, the historical engine speed is engine speed sample which is measured by testing the target vehicle in the earlier stage, the historical demand torque data corresponding to the historical accelerator pedal opening and the historical engine speed working condition are measured, the mapping table is filled with each accelerator pedal opening data in the historical accelerator pedal opening, each engine speed in the historical engine speed and each demand torque data in the historical demand torque, and a second corresponding relation between the accelerator pedal opening and the engine speed and the demand torque is established.
Step S202: and obtaining the required torque corresponding to the current accelerator pedal opening and the engine speed based on the second corresponding relation.
After obtaining the second corresponding relation between the opening of the accelerator pedal and the rotation speed of the engine and the required torque, the required torque with the second corresponding relation between the opening of the accelerator pedal and the rotation speed of the engine can be obtained by inquiring the mapping table according to the specific sizes of the opening of the accelerator pedal and the rotation speed of the engine, and the required torque of the driver is obtained.
The second corresponding relation between the opening of the accelerator pedal, the engine rotating speed and the required torque is obtained; and obtaining the required torque corresponding to the current accelerator pedal opening and the engine speed based on the second corresponding relation, rapidly obtaining the required torque of the driver according to the current accelerator pedal opening and the engine speed, and improving the accuracy of the identification of the required torque of the driver.
Referring to fig. 7, fig. 7 is a block diagram showing the structure of a first embodiment of the control device for improving power shortage according to the present invention.
As shown in fig. 7, a control device for improving insufficient power according to an embodiment of the present invention includes:
the acquisition module 10 is used for acquiring the current accelerator pedal opening and the engine speed.
The obtaining module 10 is further configured to obtain a required torque according to the current accelerator pedal opening and the engine speed.
A comparison module 20 for comparing the required torque with a model torque.
And the timing module 30 is used for judging that the engine is in a preset state when the required torque is greater than or equal to the model torque, and recording the duration of the engine in the preset state.
The control module 40 is configured to boost power of the engine when the current accelerator pedal opening is greater than or equal to a preset accelerator pedal opening threshold and the duration reaches a preset delay time threshold.
The embodiment obtains the current opening degree of the accelerator pedal and the engine speed; obtaining a required torque according to the current accelerator pedal opening and the engine speed; comparing the required torque with a model torque; when the required torque is greater than or equal to the model torque, determining that the engine is in a preset state, and recording the duration of the engine in the preset state; when the current accelerator pedal opening is larger than or equal to a preset accelerator pedal opening threshold value and the duration reaches a preset delay time threshold value, the power of the engine is improved, the condition of insufficient power in a long-uphill or heavy-load high-speed running process is improved, the effect of improving the insufficient power of the engine is good, the stable operation of the later-stage engine is ensured, the power performance of the vehicle is improved, and the drivability of the vehicle is optimized.
In an embodiment, the control module 50 is further configured to obtain a current air-fuel ratio of the engine when the current accelerator pedal opening is greater than or equal to a preset accelerator pedal opening threshold and the duration reaches a preset delay time threshold; adjusting the current air-fuel ratio based on a preset air-fuel ratio to obtain a target air-fuel ratio; obtaining a target torque based on the target air-fuel ratio; and carrying out power lifting on an engine of the target vehicle through the target torque.
In one embodiment, the comparison module 30 is further configured to obtain a current air-fuel ratio and a current firing angle of the target vehicle; and obtaining the model torque corresponding to the current air-fuel ratio and the current ignition angle based on a first corresponding relation, wherein the first corresponding relation is the corresponding relation between the air-fuel ratio and the ignition angle and the model torque.
In one embodiment, the comparison module 30 is further configured to obtain a historical air-fuel ratio and a historical firing angle of the engine; calculating a historical model torque of the engine according to the historical air-fuel ratio and the historical ignition angle; a first correspondence between air-fuel ratio and firing angle and model torque is determined based on the historical air-fuel ratio, the historical firing angle, and the historical model torque.
In an embodiment, the obtaining module 10 is further configured to obtain a second correspondence between the accelerator opening and the engine speed and the required torque; and obtaining the required torque corresponding to the current accelerator pedal opening and the engine speed based on the second corresponding relation.
In one embodiment, the obtaining module 10 is further configured to obtain a historical accelerator pedal opening and a historical engine speed; calculating historical demand torque according to the historical accelerator pedal opening and the historical engine speed; and determining a second corresponding relation between the accelerator pedal opening, the engine rotating speed and the required torque based on the historical accelerator pedal opening, the historical engine rotating speed and the historical required torque.
In one embodiment, the control module 50 is further configured to obtain a target pedal opening after power boost; and stopping power lifting of the engine of the target vehicle when the target pedal opening is smaller than the preset accelerator pedal opening threshold.
In addition, in order to achieve the above object, the present invention also proposes a control apparatus for improving power shortage, the control apparatus for improving power shortage comprising: a memory, a processor and a control program for improving the power shortage stored on the memory and executable on the processor, the control program for improving the power shortage being configured to implement the steps of the control method for improving the power shortage as described above.
The control device for improving the power shortage adopts all the technical schemes of all the embodiments, so that the control device at least has all the beneficial effects brought by the technical schemes of the embodiments, and the description is omitted.
In addition, the embodiment of the invention also provides a storage medium, wherein the storage medium is stored with a control program for improving the power shortage, and the control program for improving the power shortage realizes the steps of the control method for improving the power shortage when being executed by a processor.
Because the storage medium adopts all the technical schemes of all the embodiments, the storage medium has at least all the beneficial effects brought by the technical schemes of the embodiments, and the description is omitted here.
It should be understood that the foregoing is illustrative only and is not limiting, and that in specific applications, those skilled in the art may set the invention as desired, and the invention is not limited thereto.
It should be noted that the above-described working procedure is merely illustrative, and does not limit the scope of the present invention, and in practical application, a person skilled in the art may select part or all of them according to actual needs to achieve the purpose of the embodiment, which is not limited herein.
In addition, technical details not described in detail in the present embodiment may refer to the control method for improving insufficient power provided in any embodiment of the present invention, which is not described herein.
Furthermore, it should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system 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 system. 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 system that comprises the element.
The foregoing embodiment numbers of the present invention are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments.
From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (e.g. Read Only Memory)/RAM, magnetic disk, optical disk) and including several instructions for causing a terminal device (which may be a mobile phone, a computer, a server, or a network device, etc.) to perform the method according to the embodiments of the present invention.
The foregoing description is only of the preferred embodiments of the present invention, and is not intended to limit the scope of the invention, but rather is intended to cover any equivalents of the structures or equivalent processes disclosed herein or in the alternative, which may be employed directly or indirectly in other related arts.

Claims (7)

1. A control method for improving power shortage, characterized by comprising:
acquiring the current opening degree of an accelerator pedal and the rotating speed of an engine;
obtaining a required torque according to the current accelerator pedal opening and the engine speed;
comparing the required torque with a model torque;
when the required torque is greater than or equal to the model torque, determining that the engine is in a preset state, and recording the duration of the engine in the preset state, wherein the preset state is a state of insufficient engine power;
when the current accelerator pedal opening is larger than or equal to a preset accelerator pedal opening threshold value and the duration reaches a preset delay time threshold value, the power of the engine is increased;
the step of obtaining the required torque according to the current accelerator pedal opening and the engine speed comprises the following steps:
acquiring a second corresponding relation between the opening of an accelerator pedal, the rotating speed of the engine and the required torque;
obtaining the required torque corresponding to the current accelerator pedal opening and the engine speed based on the second corresponding relation;
before comparing the required torque with the model torque, the method further comprises:
acquiring a current air-fuel ratio and a current ignition angle of a target vehicle;
obtaining a model torque corresponding to the current air-fuel ratio and the current ignition angle based on a first corresponding relation, wherein the first corresponding relation is a corresponding relation between the air-fuel ratio and the ignition angle and the model torque;
when the current accelerator pedal opening is greater than or equal to a preset accelerator pedal opening threshold and the duration reaches a preset delay time threshold, the step of increasing the power of the engine comprises the following steps:
acquiring the current air-fuel ratio of the engine when the current accelerator pedal opening is greater than or equal to a preset accelerator pedal opening threshold and the duration reaches a preset delay time threshold;
adjusting the current air-fuel ratio based on a preset air-fuel ratio to obtain a target air-fuel ratio;
obtaining a target torque based on the target air-fuel ratio;
and carrying out power lifting on an engine of the target vehicle through the target torque.
2. The method for controlling the improvement of the power shortage according to claim 1, wherein the obtaining the model torque corresponding to the current air-fuel ratio and the current ignition angle based on a first correspondence relation, which is before the correspondence relation between the air-fuel ratio and the ignition angle and the model torque, further includes:
acquiring a historical air-fuel ratio and a historical ignition angle of an engine;
calculating a historical model torque of the engine according to the historical air-fuel ratio and the historical ignition angle;
a first correspondence between air-fuel ratio and firing angle and model torque is determined based on the historical air-fuel ratio, the historical firing angle, and the historical model torque.
3. The method for controlling insufficient power according to claim 1, further comprising, before the second correspondence between the accelerator pedal opening and the engine speed and the required torque is obtained:
acquiring a historical accelerator pedal opening and a historical engine speed;
calculating historical demand torque according to the historical accelerator pedal opening and the historical engine speed;
and determining a second corresponding relation between the accelerator pedal opening, the engine rotating speed and the required torque based on the historical accelerator pedal opening, the historical engine rotating speed and the historical required torque.
4. The control method for improving power shortage as set forth in any one of claims 1 to 3, characterized in that, after the power of the engine is raised when the current accelerator pedal opening is equal to or greater than a preset accelerator pedal opening threshold and the duration reaches a preset delay time threshold, further comprising:
acquiring the opening degree of a target pedal after power lifting;
and stopping power lifting of the engine of the target vehicle when the target pedal opening is smaller than the preset accelerator pedal opening threshold.
5. A control device for improving power shortage, characterized by comprising:
the acquisition module is used for acquiring the current opening of the accelerator pedal and the engine speed;
the acquisition module is further used for acquiring a required torque according to the current accelerator pedal opening and the engine speed;
the comparison module is used for comparing the required torque with the model torque;
the timing module is used for judging that the engine is in a preset state when the required torque is greater than or equal to the model torque and recording the duration of the engine in the preset state, wherein the preset state is a state of insufficient engine power;
the control module is used for improving the power of the engine when the current accelerator pedal opening is larger than or equal to a preset accelerator pedal opening threshold and the duration reaches a preset delay time threshold;
the acquisition module is also used for acquiring a second corresponding relation between the opening of the accelerator pedal and the rotation speed and the required torque of the engine; obtaining the required torque corresponding to the current accelerator pedal opening and the engine speed based on the second corresponding relation;
the comparison module is also used for acquiring the current air-fuel ratio and the current ignition angle of the target vehicle;
obtaining a model torque corresponding to the current air-fuel ratio and the current ignition angle based on a first corresponding relation, wherein the first corresponding relation is a corresponding relation between the air-fuel ratio and the ignition angle and the model torque;
the control module is used for acquiring the current air-fuel ratio of the engine when the current accelerator pedal opening is larger than or equal to a preset accelerator pedal opening threshold and the duration reaches a preset delay time threshold; adjusting the current air-fuel ratio based on a preset air-fuel ratio to obtain a target air-fuel ratio; obtaining a target torque based on the target air-fuel ratio; and carrying out power lifting on an engine of the target vehicle through the target torque.
6. A control apparatus that improves power shortage, characterized by comprising: a memory, a processor, and a control program for improving power shortage stored on the memory and operable on the processor, the control program for improving power shortage being configured to implement the control method for improving power shortage according to any one of claims 1 to 4.
7. A storage medium having stored thereon a control program for improving power shortage, which when executed by a processor, implements the control method for improving power shortage according to any one of claims 1 to 4.
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