CN114876656A - Control method, device and equipment for improving power shortage and storage medium - Google Patents
Control method, device and equipment for improving power shortage and storage medium Download PDFInfo
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- CN114876656A CN114876656A CN202210401719.0A CN202210401719A CN114876656A CN 114876656 A CN114876656 A CN 114876656A CN 202210401719 A CN202210401719 A CN 202210401719A CN 114876656 A CN114876656 A CN 114876656A
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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
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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
- F02D41/1438—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
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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
- F02D2041/1433—Introducing closed-loop corrections characterised by the control or regulation method using a model or simulation of the system
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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
- 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
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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
- 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
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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
- 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
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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
- F02D2250/00—Engine control related to specific problems or objectives
- F02D2250/18—Control of the engine output torque
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- 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
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- 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)
- Combined Controls Of Internal Combustion Engines (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
Abstract
The invention discloses a control method, a control device, control 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 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 rotating speed; comparing the required torque with a model torque; when the required torque is larger than or equal to the model torque, judging that the engine is in a preset state, and recording the duration of the engine in the preset state; the power of engine promotes when current accelerator pedal aperture more than or equal to predetermines accelerator pedal aperture threshold value just duration reaches and predetermines the delay time threshold value the condition that power is not enough in long uphill or the high-speed driving of heavy load is improved, and it is effectual to improve engine power not enough, guarantees the steady operation of later stage engine, improves vehicle dynamic performance, optimizes vehicle driveability.
Description
Technical Field
The invention relates to the technical field of automobiles, in particular to a control method, a control device, control equipment and a storage medium for improving power shortage.
Background
The existing vehicle carrying the gasoline engine is easy to have insufficient power of the automobile engine in the process of long uphill or heavy-load high-speed driving, so that the phenomenon of fire shaking is caused, and the vehicle cannot run stably.
When the power of the existing vehicle engine is insufficient, only power shortage reminding can be carried out, specific improvement and control on power shortage are not involved, and the effect of improving the power shortage of the engine is poor.
Disclosure of Invention
The invention mainly aims to provide a control method, a control device, control equipment and a storage medium for improving power shortage, and aims to solve the technical problem that the effect of improving the power shortage of an engine in the prior art is poor.
To achieve the above object, the present invention provides a control method for improving power shortage, 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 rotating speed;
comparing the required torque with a model torque;
when the required torque is larger than or equal to the model torque, judging 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, improving the power of the engine.
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 the power of the engine, including:
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;
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 performing power lifting on the 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 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, obtaining a model torque corresponding to the current air-fuel ratio and the current ignition angle based on a first corresponding relationship, where the first corresponding relationship is before the corresponding relationship between the air-fuel ratio and the ignition angle and the model torque, further includes:
acquiring historical air-fuel ratio and historical ignition angle of an engine;
calculating historical model torque of the engine according to the historical air-fuel ratio and the historical ignition angle;
based on the historical air-fuel ratio, the historical firing angle, and the historical model torque, a first correspondence between air-fuel ratio and firing angle and model torque is determined.
Optionally, obtaining the required torque according to the current accelerator pedal opening and the engine speed comprises:
acquiring a second corresponding relation between the opening of an accelerator pedal and the rotating speed and the required torque of the engine;
and obtaining the required torque corresponding to the current accelerator pedal opening and the engine rotating speed based on the second corresponding relation.
Optionally, before obtaining the second corresponding relationship between the accelerator pedal opening and the engine speed and the required torque, the method further includes:
acquiring historical opening of an accelerator pedal and historical engine speed;
calculating historical demand torque according to the historical accelerator pedal opening and the historical engine rotating speed;
and determining a second corresponding relation between the accelerator pedal opening and the engine speed and the required torque based on the historical accelerator pedal opening, the historical engine 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 target pedal opening after power lifting;
and when the target pedal opening is smaller than the preset accelerator pedal opening threshold value, stopping power lifting of an engine of the target vehicle.
In order to achieve the above object, the present invention also provides a control device for improving power shortage, including:
the acquisition module is used for acquiring the current opening degree of an 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 rotating speed;
a comparison module for comparing the required torque with a model torque;
the timing module is used for judging that the engine is in a preset state when the required torque is larger 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 increasing the power of the engine when the current accelerator pedal opening is more than or equal to a preset accelerator pedal opening threshold and the duration reaches a preset delay time threshold.
Further, to achieve the above object, the present invention also proposes a control apparatus for improving power shortage, comprising: a memory, a processor and a power deficit improvement control program stored on the memory and executable on the processor, the power deficit improvement control program configured to implement the steps of the power deficit improvement control method as described above.
In addition, in order to achieve the above object, the present invention further proposes a storage medium having a control program for improving power shortage stored thereon, wherein the control program for improving power shortage realizes the steps of the control method for improving power shortage as described above when executed by a processor.
The method comprises the steps of obtaining 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 rotating speed; comparing the required torque with a model torque; when the required torque is larger than or equal to the model torque, judging that the engine is in a preset state, and recording the duration of the engine in the preset state; the power of engine promotes when current accelerator pedal aperture more than or equal to predetermines accelerator pedal aperture threshold value just duration reaches and predetermines the delay time threshold value the condition that power is not enough in long uphill or the high-speed driving of heavy load is improved, and it is effectual to improve engine power not enough, guarantees the steady operation of later stage engine, improves vehicle dynamic performance, optimizes vehicle driveability.
Drawings
FIG. 1 is a schematic diagram of a power-starved improvement control device for a hardware operating environment according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart illustrating a control method for improving power shortage according to a first embodiment of the present invention;
FIG. 3 is a schematic flowchart of a first embodiment of a control method for improving power shortage according to the present invention;
FIG. 4 is a flowchart illustrating a control method for improving power shortage according to a second embodiment of the present invention;
FIG. 5 is a flowchart illustrating a control method for improving power shortage according to a third embodiment of the present invention;
FIG. 6 is a flowchart illustrating a control method for improving power shortage according to a fourth embodiment of the present invention;
fig. 7 is a block diagram showing the configuration of the first embodiment of the control device for alleviating power shortage according to the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a control device for improving power shortage in a hardware operating 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 (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Wherein a communication bus 1002 is used to enable connective communication between these components. The user interface 1003 may include a Display screen (Display), an input unit such as a Keyboard (Keyboard), and the optional user interface 1003 may also 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 Random Access Memory (RAM) Memory, or may be a Non-Volatile Memory (NVM), such as a disk Memory. The memory 1005 may alternatively be a storage device separate from the processor 1001 described previously.
Those skilled in the art will appreciate that the configuration shown in fig. 1 does not constitute a limitation of the control device to ameliorate power shortage, and may include more or fewer components than shown, or some components in combination, or a different arrangement of components.
As shown in fig. 1, a memory 1005, which is a storage medium, may include therein an operating system, a network communication module, a user interface module, and a power shortage improving control program.
In the control apparatus for ameliorating 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 of the control apparatus for improving power shortage of the present invention may be provided in a control apparatus for improving power shortage, which calls a control program for improving power shortage stored in the memory 1005 through the processor 1001 and executes a control method for improving power shortage provided by an embodiment of the present invention.
Referring to fig. 2, fig. 2 is a schematic flow chart of a control method for improving power shortage according to a first embodiment of the present invention.
In this embodiment, the control method for improving power shortage includes the following steps:
step S10: and acquiring the current opening degree of an accelerator pedal and the engine speed.
It should be noted that the executing subject of the present embodiment is an apparatus for improving the power shortage control, and may also be other apparatuses capable of realizing the same or similar functions.
In a specific implementation, the current accelerator pedal opening is a degree to which an accelerator pedal is pressed down when a driver drives a vehicle, and may also be understood as a throttle opening, and the current accelerator pedal opening may be obtained by performing calculation according to a current driving condition, a vehicle speed, and the like, and may also be other ways to obtain 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 automobile.
Step S20: and obtaining the required torque according to the current accelerator pedal opening and the engine rotating speed.
It can be understood that a mapping relation is established between the current accelerator pedal opening and the required torque and between the engine rotating speed and the required torque, a large number of experiments can be performed in the early stage to establish a relation between the current accelerator pedal opening and the required torque and to obtain the required torque corresponding to the current accelerator pedal opening and the engine rotating speed according to the relation between the current accelerator pedal opening and the required torque and between the engine rotating speed and the required torque. The required torque refers to torque required by a driver to drive and control the vehicle to operate under the current working condition, such as 180n.m, 200n.m and the like, and the embodiment is not limited in comparison.
Step S30: the required torque is compared with a model torque.
In this embodiment, the model torque is an actual torque of the vehicle, and can be calculated by an air-fuel ratio and an ignition angle of the vehicle engine at the time, and whether the engine of the vehicle is in a power shortage phenomenon can be judged by comparing the driver required torque with the model torque, so that the power improvement control can be performed when the engine is in a power shortage state.
Step S40: and when the required torque is larger than or equal to the model torque, judging 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 where the power of the engine is insufficient, and when the required torque is greater than or equal to the model torque, it is described that the actual torque of the vehicle at this time does not meet the torque required by the driver, and therefore the engine has a power shortage phenomenon, 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 it is determined that the engine is in the power shortage state, and when the engine is in the power shortage state, the duration of the engine in the preset state may be 10s, 30s, 40s, and the like, 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, improving the power of the engine.
The preset accelerator pedal opening threshold refers to an accelerator pedal opening value for increasing power, for example, 60%, 85%, and 90%, which is not limited in the present embodiment, the present embodiment takes 85% as an example, and the preset delay time threshold may be 20s, 30s, and 50s, which are not limited in the present embodiment, and the present embodiment takes 30s as an example. 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 power shortage is greater than or equal to 30s, the engine of the vehicle may be powered up, where powering up may include controlling fuel injection by an Electronic Control Unit (ECU) of the vehicle, and the specific operation of fuel injection may be controlled according to an air-fuel ratio of the vehicle, so as to boost the power of the engine.
As shown in fig. 3, fig. 3 is a general flow chart of the control method for improving power shortage according to the 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 power shortage timing, and exits a power boost program when the model torque is greater than or equal to the required torque and the engine is in a normal operation state. When the engine is in a power shortage state, starting power shortage timing and judging whether the current accelerator pedal opening is larger than or equal to a preset accelerator pedal opening threshold value, and when the current accelerator pedal opening is larger than the preset accelerator pedal opening threshold value or the power shortage timing is smaller than a preset delay time threshold value, quitting the power lifting program. When the current accelerator pedal opening is greater than or equal to a preset accelerator pedal opening threshold value of 85 percent and the power shortage is greater than or equal to a preset delay time threshold value of 30s, 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 the current air-fuel ratio of the engine to the ECU through an oxygen sensor signal for calculating the actual air-fuel ratio, 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 the target accelerator pedal opening after power lifting, judging whether the target accelerator pedal opening is smaller than a preset accelerator pedal opening threshold value 85%, finishing the power lifting of the engine when the target accelerator pedal opening is smaller than the preset accelerator pedal opening threshold value 85%, and exiting the power lifting program.
The method comprises the steps of obtaining the current opening degree of an accelerator pedal and the engine speed; obtaining a required torque according to the current accelerator pedal opening and the engine rotating speed; comparing the required torque with a model torque; when the required torque is larger than or equal to the model torque, judging that the engine is in a preset state, and recording the duration of the engine in the preset state; the power of engine promotes when current accelerator pedal aperture more than or equal to predetermines accelerator pedal aperture threshold value just duration reaches and predetermines the delay time threshold value the condition that power is not enough in long uphill or the high-speed driving of heavy load is improved, and it is effectual to improve engine power not enough, guarantees the steady operation of later stage engine, improves vehicle dynamic performance, optimizes vehicle driveability.
Referring to fig. 4, fig. 4 is a schematic flow chart of a control method for improving power shortage according to a second embodiment of the present invention.
Based on the first embodiment, the step S50 of the control method for improving power shortage in 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 understood that when the current accelerator pedal opening is greater than or equal to the preset accelerator pedal opening threshold and the duration of the power shortage timing exceeds the preset delay time threshold, it indicates that the vehicle needs to perform power boost, the ECU of the vehicle can control oil injection to adjust the air-fuel ratio of the engine, so that the current air-fuel ratio of the engine needs to be acquired, the air-fuel ratio can be measured through an oxygen sensor installed on the vehicle, and when the ECU receives the oxygen sensor signal, the actual air-fuel ratio is calculated according to the oxygen sensor signal, so that the current air-fuel ratio of the engine is obtained.
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 is an air-fuel ratio corresponding to power boost of the engine, and may be 10, 11, 12.5, etc., which is not limited in this embodiment, and the embodiment is described with 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, the current air-fuel ratio is adjusted in real time to obtain the target air-fuel ratio, and the target air-fuel ratio 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.
After the current air-fuel ratio is adjusted to obtain the target air-fuel ratio, a target torque corresponding to the target air-fuel ratio can be obtained according to the corresponding relation between the air-fuel ratio and the model torque, wherein the target torque refers to the real-time torque of the engine after power enrichment.
Step S504: and performing power lifting on the engine of the target vehicle through the target torque.
In specific implementation, after the target torque is obtained, the target vehicle can be controlled through the target torque so as to realize power boost of an engine of the target vehicle, increase real-time torque of the engine and realize power boost of the engine.
Further, after the engine is power-boosted by the target torque, the target pedal opening after power boosting can be obtained; and when the target pedal opening is smaller than the preset accelerator pedal opening threshold value, stopping power lifting of an engine of the target vehicle.
The target pedal opening refers to the accelerator pedal opening after the power of the engine is boosted, 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, it is indicated that the power shortage of the engine is improved, the power boosting control of the engine of the target vehicle can be stopped, the power shortage control program of the engine is completed, the steps of detecting the current air-fuel ratio, the current ignition angle and the required torque of the target vehicle are returned, and the closed-loop control of the power boosting of the engine is realized. And if the target pedal opening is larger 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 performing power lifting on the engine of the target vehicle through the target torque.
Referring to fig. 5, fig. 5 is a schematic flow chart of a control method for improving power shortage according to a third embodiment of the present invention.
Based on the first embodiment, the control method for improving the power shortage according to 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 by an oxygen sensor, and the current ignition angle may be calculated according to the engine operating condition of the target vehicle.
Step S32: and obtaining 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 should 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 the model torque of the target vehicle can be obtained from the first correspondence relationship when the current air-fuel ratio and the current ignition angle of the target vehicle are obtained. The step of obtaining the first corresponding relationship specifically includes: acquiring historical air-fuel ratio and historical ignition angle of an engine; calculating historical model torque of the engine according to the historical air-fuel ratio and the historical ignition angle; based on the historical air-fuel ratio, the historical firing angle, and the historical model torque, a first correspondence between air-fuel ratio and firing angle and model torque is determined.
Specifically, the historical air-fuel ratio of the engine refers to a large number of air-fuel ratio samples obtained by performing an early test, the historical ignition angle refers to a large number of ignition angle samples obtained by performing an early test, and measuring a history model torque at the history air-fuel ratio and the history ignition angle, establishing a first corresponding relation between the air-fuel ratio and the ignition angle and the model torque based on the history air-fuel ratio, the history ignition angle and the history model torque, by establishing a mapping table of historical air-fuel ratios, historical ignition angles and historical model torques and filling air-fuel ratio data in the historical air-fuel ratios, ignition angle data in the historical ignition angles and model torque data in the historical model torques into the table in a one-to-one correspondence manner, obtaining a mapping table with a first corresponding relation, and after obtaining the current air-fuel ratio and the current ignition angle, the model torque having the first correspondence relationship with the current air-fuel ratio and the current ignition angle can be obtained by referring to the map.
The present embodiment obtains the current air-fuel ratio and the current ignition angle of the target vehicle; and obtaining model torques 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 torques, and the accurate model torques can be quickly obtained according to the first corresponding relation.
Referring to fig. 6, fig. 6 is a schematic flow chart of a control method for improving power shortage according to a fourth embodiment of the present invention.
Based on the first embodiment, the step S20 of the control method for improving power shortage in the present embodiment specifically includes:
step S201: and acquiring a second corresponding relation between the opening of the accelerator pedal and the rotating speed of the engine and the required torque.
It should be understood that the second correspondence relationship is a second correspondence relationship between the accelerator pedal opening degree and the engine speed and the required torque, and the specific step of obtaining the second correspondence relationship includes: acquiring historical opening of an accelerator pedal and historical engine speed; calculating historical demand torque according to the historical accelerator pedal opening and the historical engine rotating speed; and determining a second corresponding relation between the accelerator pedal opening and the engine speed and the required torque based on the historical accelerator pedal opening, the historical engine speed and the historical required torque.
The historical accelerator pedal opening is sample data of an accelerator pedal opening for performing test measurement on a target vehicle at the early stage, the historical engine rotating speed is a sample of an engine rotating speed for performing test measurement on the target vehicle at the early stage, corresponding historical required torque data under the working conditions of the historical accelerator pedal opening and the historical engine rotating speed are measured, each piece of accelerator pedal opening data in the historical accelerator pedal opening, each piece of engine rotating speed in the historical engine rotating speed and each piece of required torque data in the historical required torque are filled into a mapping table, and a second corresponding relation between the accelerator pedal opening and the required torque and between the engine rotating speed is established.
Step S202: and obtaining the required torque corresponding to the current accelerator pedal opening and the engine rotating speed based on the second corresponding relation.
It should be noted that, after the second corresponding relationship between the opening degree of the accelerator pedal and the rotational speed of the engine and the required torque is obtained, the mapping table may be queried according to the specific magnitude of the current opening degree of the accelerator pedal and the current rotational speed of the engine to obtain the required torque having the second corresponding relationship with the opening degree of the accelerator pedal and the rotational speed of the engine, so as to obtain the required torque of the driver.
In the embodiment, a second corresponding relation between the opening degree of an accelerator pedal and the rotating speed and the required torque of the engine is obtained; and obtaining the required torque corresponding to the current accelerator pedal opening and the engine rotating speed based on the second corresponding relation, and rapidly obtaining the required torque of the driver according to the current accelerator pedal opening and the engine rotating speed, so that the accuracy of identifying the required torque of the driver is improved.
Referring to fig. 7, fig. 7 is a block diagram illustrating a first embodiment of a control device for improving power shortage according to the present invention.
As shown in fig. 7, a control device for improving power shortage according to an embodiment of the present invention includes:
the obtaining module 10 is used for obtaining the current opening degree of an accelerator pedal 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 requested torque with a model torque.
And the timing module 30 is configured to determine that the engine is in a preset state when the required torque is greater than or equal to the model torque, and record a duration of the engine in the preset state.
And the control module 40 is used for increasing 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.
The method comprises the steps of obtaining the current opening degree of an accelerator pedal and the engine speed; obtaining a required torque according to the current accelerator pedal opening and the engine rotating speed; comparing the required torque with a model torque; when the required torque is larger than or equal to the model torque, judging that the engine is in a preset state, and recording the duration of the engine in the preset state; the power of engine promotes when current accelerator pedal aperture more than or equal to predetermines accelerator pedal aperture threshold value just duration reaches and predetermines the delay time threshold value the condition that power is not enough in long uphill or the high-speed driving of heavy load is improved, and it is effectual to improve engine power not enough, guarantees the steady operation of later stage engine, improves vehicle dynamic performance, optimizes vehicle driveability.
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 performing power lifting on the engine of the target vehicle through the target torque.
In one embodiment, the comparing module 30 is further configured to obtain a current air-fuel ratio and a current ignition angle of the target vehicle; and obtaining 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 comparing module 30 is further configured to obtain a historical air-fuel ratio and a historical ignition angle of the engine; calculating historical model torque of the engine according to the historical air-fuel ratio and the historical ignition angle; based on the historical air-fuel ratio, the historical firing angle, and the historical model torque, a first correspondence between air-fuel ratio and firing angle and model torque is determined.
In one embodiment, the obtaining module 10 is further configured to obtain a second corresponding relationship between the opening degree of the accelerator pedal and the engine speed and the required torque; and obtaining the required torque corresponding to the current accelerator pedal opening and the engine rotating 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 rotating speed; and determining a second corresponding relation between the accelerator pedal opening and the engine speed and the required torque based on the historical accelerator pedal opening, the historical engine 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 when the target pedal opening is smaller than the preset accelerator pedal opening threshold value, stopping power lifting of an engine of the target vehicle.
Further, to achieve the above object, the present invention also proposes a control apparatus for improving power shortage, comprising: a memory, a processor and a power deficit improvement control program stored on the memory and executable on the processor, the power deficit improvement control program configured to implement the steps of the power deficit improvement control method as described above.
Since the control device for improving power shortage adopts all technical solutions of all the embodiments, at least all the beneficial effects brought by the technical solutions of the embodiments are achieved, and detailed description is omitted here.
Furthermore, an embodiment of the present invention further provides a storage medium, in which a control program for improving power shortage is stored, and the control program for improving power shortage realizes the steps of the control method for improving power shortage as described above when being executed by a processor.
Since the storage medium adopts all technical solutions of all the embodiments, at least all the beneficial effects brought by the technical solutions of the embodiments are achieved, and no further description is given here.
It should be understood that the above is only an example, and the technical solution of the present invention is not limited in any way, and in a specific application, a person skilled in the art may set the technical solution as needed, and the present invention is not limited thereto.
It should be noted that the above-described work flows are only exemplary, and do not limit the scope of the present invention, and in practical applications, a person skilled in the art may select some or all of them to achieve the purpose of the solution of the embodiment according to actual needs, and the present invention is not limited herein.
In addition, the technical details that are not elaborated in the embodiment can be referred to the control method for improving the power shortage provided by any embodiment of the present invention, and are not described herein again.
Further, it is to 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 an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solution of the present invention or portions thereof that contribute to the prior art may be embodied in the form of a software product, where the computer software product is stored in a storage medium (e.g. Read Only Memory (ROM)/RAM, magnetic disk, optical disk), and includes several instructions for enabling a terminal device (e.g. a mobile phone, a computer, a server, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
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 rotating speed;
comparing the required torque with a model torque;
when the required torque is larger than or equal to the model torque, judging 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, improving the power of the engine.
2. The control method for improving power shortage according to claim 1, wherein the increasing the power of the engine 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 comprises:
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;
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 performing power lifting on the engine of the target vehicle through the target torque.
3. The control method for improving power shortage according to claim 1, wherein 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;
and obtaining 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.
4. The control method for improving power shortage according to claim 3, wherein the obtaining of the model torque corresponding to the current air-fuel ratio and the current ignition angle based on a first correspondence relationship, which is prior to the correspondence relationship between the air-fuel ratio and the ignition angle and the model torque, further comprises:
acquiring historical air-fuel ratio and historical ignition angle of an engine;
calculating historical model torque of the engine according to the historical air-fuel ratio and the historical ignition angle;
based on the historical air-fuel ratio, the historical firing angle, and the historical model torque, a first correspondence between air-fuel ratio and firing angle and model torque is determined.
5. The control method for improving power shortage according to claim 1, wherein the deriving the required torque based on the current accelerator pedal opening and the engine speed comprises:
acquiring a second corresponding relation between the opening of an accelerator pedal and the rotating speed and the required torque of the engine;
and obtaining the required torque corresponding to the current accelerator pedal opening and the engine rotating speed based on the second corresponding relation.
6. The control method for improving power shortage according to claim 5, wherein before the obtaining of the second correspondence relationship between the accelerator pedal opening degree and the engine speed and the required torque, further comprising:
acquiring historical opening of an accelerator pedal and historical engine speed;
calculating historical demand torque according to the historical accelerator pedal opening and the historical engine rotating speed;
and determining a second corresponding relation between the accelerator pedal opening and the engine speed and the required torque based on the historical accelerator pedal opening, the historical engine speed and the historical required torque.
7. The control method for improving power shortage according to any one of claims 1 to 6, further comprising, after the power of the engine is increased 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:
acquiring the target pedal opening after power lifting;
and when the target pedal opening is smaller than the preset accelerator pedal opening threshold value, stopping power lifting of an engine of the target vehicle.
8. A control device for ameliorating power shortage, characterized by comprising:
the acquisition module is used for acquiring the current opening degree of an 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 rotating speed;
a comparison module for comparing the required torque with a model torque;
the timing module is used for judging that the engine is in a preset state when the required torque is larger 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 increasing the power of the engine when the current accelerator pedal opening is more than or equal to a preset accelerator pedal opening threshold and the duration reaches a preset delay time threshold.
9. A control apparatus that ameliorates power shortage, characterized by comprising: a memory, a processor, and a power shortage improvement control program stored on the memory and executable on the processor, the power shortage improvement control program being configured to implement the power shortage improvement control method according to any one of claims 1 to 7.
10. A storage medium having a power shortage improvement control program stored thereon, the power shortage improvement control program, when executed by a processor, implementing the power shortage improvement control method according to any one of claims 1 to 7.
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| CN114876656B (en) | 2023-04-25 |
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