CN116950794A - Method, device, equipment and storage medium for controlling fuel injection after vehicle start - Google Patents
Method, device, equipment and storage medium for controlling fuel injection after vehicle start Download PDFInfo
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- CN116950794A CN116950794A CN202310854712.9A CN202310854712A CN116950794A CN 116950794 A CN116950794 A CN 116950794A CN 202310854712 A CN202310854712 A CN 202310854712A CN 116950794 A CN116950794 A CN 116950794A
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- 238000002347 injection Methods 0.000 title claims abstract description 139
- 239000007924 injection Substances 0.000 title claims abstract description 139
- 239000000446 fuel Substances 0.000 title claims abstract description 104
- 238000000034 method Methods 0.000 title claims abstract description 54
- 230000004913 activation Effects 0.000 claims abstract description 31
- 230000007613 environmental effect Effects 0.000 claims abstract description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 29
- 238000002485 combustion reaction Methods 0.000 claims description 20
- 238000004590 computer program Methods 0.000 claims description 16
- 230000007935 neutral effect Effects 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 5
- 239000004973 liquid crystal related substance Substances 0.000 claims description 5
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Classifications
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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
- F02D41/30—Controlling fuel injection
- F02D41/38—Controlling fuel injection of the high pressure type
- F02D41/40—Controlling fuel injection of the high pressure type with means for controlling injection timing or duration
- F02D41/402—Multiple injections
- F02D41/405—Multiple injections with post injections
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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
- F02D41/04—Introducing corrections for particular operating conditions
- F02D41/08—Introducing corrections for particular operating conditions for idling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/50—Input parameters for engine control said parameters being related to the vehicle or its components
- F02D2200/502—Neutral gear position
-
- 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
- F02D2200/00—Input parameters for engine control
- F02D2200/70—Input parameters for engine control said parameters being related to the vehicle exterior
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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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
The invention discloses a control method, a device, equipment and a storage medium for fuel injection after starting a vehicle. The method comprises the following steps: acquiring a first running parameter of the vehicle after starting, and determining a vehicle idling roughness factor according to a second running parameter of the vehicle under the condition that the vehicle is detected to meet the preset activation condition based on the first running parameter; determining a target standard limit value corresponding to the vehicle idle speed roughness factor according to a third running parameter of the vehicle and/or an environmental parameter of the environment in which the vehicle is located; determining a vehicle roughness difference based on the vehicle idle roughness factor and a target standard limit; and controlling the fuel injection after the vehicle is started based on the vehicle roughness difference value. According to the technical scheme provided by the embodiment of the invention, the oil injection after the vehicle is started is effectively controlled, and the idling stability of the vehicle is maintained.
Description
Technical Field
The present invention relates to the field of engine technologies, and in particular, to a method, an apparatus, a device, and a storage medium for controlling fuel injection after starting a vehicle.
Background
With the continuous development of science and technology, the living standard of people is remarkably improved, and automobiles become a common transportation tool in daily life.
When the vehicle is started, the piston ring of the engine, cylinder wall, valve clearance, carbon deposition in the cylinder and the like of the engine become more and more serious, and the engine burns poorly, so that the idling is unstable, and the driving feeling of a user is lower.
Disclosure of Invention
The invention provides a control method, a device, equipment and a storage medium for fuel injection after vehicle starting, which are used for solving the problem of low driving feeling of a user caused by unstable idle speed after vehicle starting.
According to an aspect of the present invention, there is provided a control method of fuel injection after a vehicle start, the control method of fuel injection after a vehicle start comprising:
acquiring a first running parameter of a vehicle after starting, and determining a vehicle idle speed roughness factor according to a second running parameter of the vehicle when the vehicle is detected to meet a preset activation condition based on the first running parameter;
determining a target standard limit value corresponding to the vehicle idle speed roughness factor according to a third running parameter of the vehicle and/or an environmental parameter of the environment in which the vehicle is located;
determining a vehicle roughness difference based on the vehicle idle roughness factor and a target standard limit;
And controlling the fuel injection after the vehicle is started based on the vehicle roughness difference value.
According to another aspect of the present invention, there is provided a control device for post-start fuel injection of a vehicle, the control device comprising:
the idle speed roughness factor determining module is used for acquiring a first running parameter of the vehicle after starting, and determining the idle speed roughness factor of the vehicle according to a second running parameter of the vehicle when the condition that the vehicle meets a preset activation condition is detected based on the first running parameter;
the target standard limit value determining module is used for determining a target standard limit value corresponding to the vehicle idle speed roughness factor according to a third running parameter of the vehicle and/or an environmental parameter of the environment where the vehicle is located;
the roughness difference value determining module is used for determining a vehicle roughness difference value based on the vehicle idle speed roughness factor and a target standard limit value;
and the fuel injection control module is used for controlling fuel injection after the vehicle is started based on the vehicle roughness difference value.
According to another aspect of the present invention, there is provided an electronic apparatus including:
at least one processor; and
a memory communicatively coupled to the at least one processor; wherein, the liquid crystal display device comprises a liquid crystal display device,
The memory stores a computer program executable by the at least one processor to enable the at least one processor to perform the method for controlling fuel injection after start of a vehicle according to any one of the embodiments of the present invention.
According to another aspect of the present invention, there is provided a computer readable storage medium storing computer instructions for causing a processor to execute a method for controlling fuel injection after start of a vehicle according to any one of the embodiments of the present invention.
According to the technical scheme, the first operating parameter of the vehicle after starting is obtained, and the idle speed roughness factor of the vehicle is determined according to the second operating parameter of the vehicle when the fact that the vehicle meets the preset activation condition is detected based on the first operating parameter; establishing a corresponding relation between a first operation parameter and a preset activation condition, accurately calculating a vehicle idle speed roughness factor of a vehicle under the preset activation condition, and then determining a target standard limit value corresponding to the vehicle idle speed roughness factor according to a third operation parameter of the vehicle and/or an environmental parameter of an environment where the vehicle is located; the method comprises the steps of accurately determining a target standard limit value corresponding to a vehicle idle speed roughness silver group, and determining a vehicle roughness difference value based on the vehicle idle speed roughness factor and the target standard limit value; and finally, controlling the fuel injection after the vehicle is started based on the vehicle roughness difference value, solving the problem of lower driving feeling of a user caused by unstable idle speed after the vehicle is started, effectively controlling the fuel injection after the vehicle is started, and maintaining the idle speed stability of the vehicle.
It should be understood that the description in this section is not intended to identify key or critical features of the embodiments of the invention or to delineate the scope of the invention. Other features of the present invention will become apparent from the description that follows.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of a method for controlling fuel injection after a vehicle is started according to a first embodiment of the present invention;
FIG. 2a is a flow chart of a method for controlling fuel injection after a vehicle is started according to a second embodiment of the present invention;
FIG. 2b is a flowchart of an alternative example of a method for controlling fuel injection after a vehicle is started according to a second embodiment of the present invention;
FIG. 2c is a flow chart of calculating a vehicle roughness difference for an alternative example of a control method for fuel injection after a vehicle start according to a second embodiment of the present invention;
FIG. 3 is a schematic diagram of a control device for fuel injection after start of a vehicle according to a third embodiment of the present invention;
fig. 4 is a schematic structural diagram of an electronic device implementing a control method of fuel injection after a vehicle start according to an embodiment of the present invention.
Detailed Description
In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Example 1
Fig. 1 is a flowchart of a method for controlling fuel injection after vehicle start according to an embodiment of the present invention, where the method may be executed by a device for controlling fuel injection after vehicle start, and the device for controlling fuel injection after vehicle start may be implemented in hardware and/or software, and the device for controlling fuel injection after vehicle start may be configured in an electronic device. As shown in fig. 1, the method includes:
s110, acquiring a first operation parameter of the vehicle after starting, and determining a vehicle idle speed roughness factor according to a second operation parameter of the vehicle when the vehicle is detected to meet a preset activation condition based on the first operation parameter.
The first operating parameter may include at least one of a start flag, an accelerator pedal opening, a gear, a transmitter rotational speed, and a vehicle speed. The preset activation condition may be understood as an activation condition for calculating the vehicle idle roughness factor. The vehicle idle roughness factor may be understood as an idle roughness factor of the engine after the vehicle is started.
Specifically, based on a sensor installed on the vehicle, acquiring the running parameters of the vehicle after the vehicle is started, judging whether the running parameters meet the preset activation conditions, and if the running parameters meet the preset activation conditions, determining the vehicle idle speed roughness factor according to the second running parameters of the vehicle. If not, continuously acquiring and updating the running parameters after the vehicle is started.
Optionally, the preset activation condition includes: after the starting zone bit is reset for a preset time, the opening of the accelerator pedal is zero, the gear is a parking gear or a neutral gear, and the rotating speed of the transmitter meets at least one of the preset rotating speed and the vehicle speed is zero.
The preset time may be preset empirically (for example, 3 seconds according to the actual rotation speed performance), which is not limited in this embodiment. The preset rotational speed may be empirically preset (e.g., 700 to 1300 revolutions per minute), and this embodiment is not limited thereto.
It will be appreciated that the vehicle enters post-start control, since there is a period of engine speed overshoot after start, the engine roughness is large during start, and the idle roughness factor signal is calculated inaccurately, thus requiring a delay of a preset time, and thus requiring waiting for the reset of the vehicle start flag for the preset time. For example, the vehicle idle speed roughness factor is activated when it is detected that the vehicle simultaneously satisfies the conditions that the start flag is reset for 3 seconds, the accelerator pedal opening is zero, the gear is neutral, the engine speed is 800 revolutions per minute, and the vehicle speed is zero. It should be noted that the preset activation condition may also be set by a manual operation by a user, and the manual operation includes, but is not limited to, deletion, addition, and modification.
Optionally, the second operating parameter includes a rotation angle of the vehicle engine; the determining a vehicle idle roughness factor according to the second operating parameter includes: determining an initial idle roughness factor of the vehicle based on a time taken for the engine to rotate a preset angle; and amplifying signals and filtering the absolute value of the initial idle speed roughness factor to obtain the vehicle idle speed roughness factor.
Specifically, by obtaining the time taken for the transmitter to rotate by the preset angle, the initial idle roughness factor of the vehicle is determined based on the difference in time taken for the transmitter to rotate by the preset angle. The initial idle speed roughness factor comprises a positive value and a negative value, the absolute value of the initial idle speed roughness factor is taken for amplifying signals and performing low-pass filtering, and the absolute value of the initial idle speed roughness factor after the processing is taken as the idle speed roughness factor of the vehicle.
For example, when the engine is in idle running condition after the vehicle is started, the engine needs to self-calculate the torque required by itself to overcome the friction torque of itself and the load torque of running auxiliaries such as a gearbox, a water pump and the like so that the engine can run at a stable rotation speed, and the specific calculation formula is as follows:
Wherein M is engine combustion torque, W is engine resistance load torque, θ is rotational inertia,is the angular acceleration of the flywheel end.
Under the condition that the engine is in normal idle speed, the driving torque generated by the engine is equal to the resistance moment of the vehicle, the angular acceleration is 0, and the following relation is satisfied:
from the above equation, it can be seen that the negative angular acceleration caused by engine combustion instability is proportional to the actual torque of the engine at that operating point. When the idle speed is unstable, the engine torque M suddenly drops, causing angular accelerationVariation of angular acceleration and square difference n of rotational speed 2 (i)-n 2 (i+1) in proportion to the reciprocal of the period due to the engine speed n>Proportional to the ratio. Thus, the inverse square error of the available staging time, representing the engine idle stability level, i.e., the vehicle idle roughness factor EIRF (Engine Idle Rough Factor), satisfies the following relationship:
wherein t is the time for rotating the signal wheel 180 degrees in the four-cylinder machine, namely the effective acting of one cylinder of the engine corresponds to the crank angle, and the larger the vehicle idle speed roughness factor EIRF is, the more unstable the combustion of the cylinder is.
And S120, determining a target standard limit value corresponding to the vehicle idle speed roughness factor according to a third running parameter of the vehicle and/or an environmental parameter of the environment where the vehicle is located.
The target standard limit value can be understood as a standard value corresponding to the vehicle idle roughness factor. The target standard limit value may be empirically preset, and is not limited in this embodiment.
Specifically, a vehicle historical operation parameter and/or an environmental parameter of a historical environment where the vehicle is located are obtained, and a target standard limit value corresponding to the current vehicle idle speed roughness factor is determined based on the vehicle historical operation parameter and/or the target standard limit value corresponding to the environmental parameter of the historical environment where the vehicle is located. Or according to different numerical value intervals of the vehicle running parameters and/or the environmental parameters, determining the standard limit values corresponding to the different numerical value intervals according to experience, storing the standard limit values in a database in a form of a table, looking up a table in the database according to the current vehicle idle speed roughness factor, and determining the target standard limit value corresponding to the current vehicle idle speed roughness factor according to a table-looking-up result.
Optionally, the determining the target standard limit value corresponding to the vehicle idle speed roughness factor according to the third running parameter of the vehicle and/or the environmental parameter of the environment where the vehicle is located includes: determining a reference standard limit value corresponding to the vehicle idle speed roughness factor according to a third running parameter of the vehicle and/or an environmental parameter of the environment in which the vehicle is located; a target standard limit corresponding to the vehicle idle roughness factor is determined based on at least one of the reference standard limits.
The reference standard limit value can be understood as a reference idle roughness factor standard value. The reference standard limit value may be empirically preset, and is not limited in this embodiment.
Specifically, one or more reference standard limits corresponding to the vehicle idle roughness factor are determined according to a third running parameter of the vehicle and/or an environmental parameter of an environment in which the vehicle is located, and the standard limit corresponding to the idle roughness factor is corrected based on the one or more reference standard limits. And taking the corrected standard limit value as a target standard limit value corresponding to the vehicle idle speed roughness factor.
Optionally, the third operation parameter includes at least one operation parameter group, and the operation parameter group includes at least one of a starting water temperature and an actual water temperature, an engine speed and a load, and a fuel injection frequency and a rail pressure. Including but not limited to altitude coefficients and ambient temperature.
On the basis, optionally, determining a reference standard limit value corresponding to the vehicle idle speed roughness factor according to a third operation parameter of the vehicle and/or an environment parameter of the environment in which the vehicle is located, wherein the reference standard limit value comprises at least one of the following operations:
Determining a reference standard limit value corresponding to the vehicle idle roughness factor based on a starting water temperature and an actual water temperature of the vehicle;
determining a reference standard limit corresponding to the vehicle idle roughness factor based on an engine speed and an engine load of the vehicle;
determining a reference standard limit value corresponding to the vehicle idle speed roughness factor based on the oil injection times and rail pressure of the vehicle;
a reference standard limit corresponding to the vehicle idle roughness factor is determined based on a plateau coefficient of an area in which the vehicle is located and an ambient temperature.
Specifically, reference standard limit values corresponding to different parameter sets are determined in advance based on a plurality of operation parameter sets and stored in a database in the form of a table, and by way of example, reference standard limit values corresponding to the starting water temperature-30 ℃ and the actual water temperature-30 ℃ are set to 1 empirically, reference standard limit values corresponding to the starting water temperature-30 ℃ and the actual water temperature-20 ℃ are set to 0.5, and the like. Specifically, after the reference standard limit value corresponding to the vehicle idle speed roughness factor is determined, at least one reference standard limit value corresponding to the interval in which the vehicle idle speed roughness factor is located is sequentially searched and obtained in a corresponding reference standard limit value table.
Optionally, the determining a target standard limit value corresponding to the vehicle idle speed roughness factor based on at least one of the reference standard limit values includes: determining a reference standard limit value corresponding to the starting water temperature and the actual water temperature of the vehicle as a main standard limit value; and adjusting the main standard limit value based on the reference standard limit value corresponding to the engine speed and the engine load, the reference standard limit value corresponding to the fuel injection and the rail pressure and the reference standard limit value corresponding to the plateau coefficient and the environmental temperature, and taking the adjusted main standard limit value as the target standard limit value.
Specifically, if the reference standard limit value corresponding to the vehicle idle speed roughness factor is affected, the reference standard limit value corresponding to the vehicle idle speed roughness factor is directly targeted to the standard limit value. If the reference standard limit value corresponding to the vehicle idle speed roughness factor is influenced by a plurality of reference standard limit values, the reference standard limit value corresponding to the starting water temperature and the actual water temperature of the vehicle is determined as a main standard limit value, the main standard limit value is adjusted based on other reference standard limit values, and the adjusted main standard limit value is taken as a target standard limit value.
Optionally, the adjusting the main standard limit based on the reference standard limit corresponding to the engine speed and the engine load, the reference standard limit corresponding to the fuel injection and the rail pressure, and the reference standard limit corresponding to the altitude coefficient and the ambient temperature, and taking the adjusted main standard limit as the target standard limit includes: and taking the product of the main standard limit value, the reference standard limit value corresponding to the engine speed and the engine load, the reference standard limit value corresponding to the fuel injection and the rail pressure and the reference standard limit value corresponding to the plateau coefficient and the environment temperature as the target standard limit value.
For example, when the reference standard limit value corresponding to the starting water temperature and the actual water temperature of the vehicle is a, the reference standard limit value corresponding to the vehicle is a reference standard limit value B corresponding to the engine speed and the engine load, a reference standard limit value C corresponding to the fuel injection and the rail pressure, and a reference standard limit value D corresponding to the altitude coefficient and the environmental temperature, respectively, the main standard limit value is D, and the target standard limit value is a product of the main standard limit value, the reference standard limit value corresponding to the engine speed and the engine load, the reference standard limit value corresponding to the fuel injection and the rail pressure, and the reference standard limit value corresponding to the altitude coefficient and the environmental temperature, that is, the target limit value t=d×ab×c. In an alternative embodiment A, B, C can take a value between 0 and 1.
In the embodiment of the invention, the accuracy of the target standard limit value is improved by determining the standard limit values corresponding to different operation parameter groups and adjusting the main standard limit value based on the reference standard limit value.
S130, determining a vehicle roughness difference value based on the vehicle idle speed roughness factor and a target standard limit value.
The vehicle roughness difference may be understood as the difference between the vehicle idle roughness factor and the target standard limit. Specifically, a difference between the vehicle idle roughness factor and the target standard limit is determined, and a vehicle roughness difference is determined based on the difference.
And S140, controlling the fuel injection after the vehicle is started based on the vehicle roughness difference value.
Specifically, the fuel injection amount of fuel injection control after the vehicle is started is determined based on the vehicle roughness difference.
According to the technical scheme, the first operating parameter of the vehicle after starting is obtained, and the idle speed roughness factor of the vehicle is determined according to the second operating parameter of the vehicle when the fact that the vehicle meets the preset activation condition is detected based on the first operating parameter; establishing a corresponding relation between a first operation parameter and a preset activation condition, accurately calculating a vehicle idle speed roughness factor of a vehicle under the preset activation condition, and then determining a target standard limit value corresponding to the vehicle idle speed roughness factor according to a third operation parameter of the vehicle and/or an environmental parameter of an environment where the vehicle is located; the method comprises the steps of accurately determining a target standard limit value corresponding to a vehicle idle speed roughness silver group, and determining a vehicle roughness difference value based on the vehicle idle speed roughness factor and the target standard limit value; and finally, controlling the fuel injection after the vehicle is started based on the vehicle roughness difference value, solving the problem of lower driving feeling of a user caused by unstable idle speed after the vehicle is started, effectively controlling the fuel injection after the vehicle is started, and maintaining the idle speed stability of the vehicle.
Example two
Fig. 2a is a flowchart of a method for controlling fuel injection after vehicle start according to a second embodiment of the present invention, and further details of how fuel injection after vehicle start is controlled based on the vehicle roughness difference in the present embodiment and the above embodiments. Optionally, the controlling the post-start fuel injection of the vehicle based on the vehicle roughness difference value includes: proportional-integral control is performed based on the vehicle roughness difference value, and a target control coefficient is determined based on the result of the proportional-integral control; and determining an oil injection control coefficient of the engine in the next combustion based on the target control coefficient and the current control coefficient of the vehicle, and performing oil injection control according to the oil injection control coefficient.
As shown in fig. 2a, the method comprises:
s210, acquiring a first operation parameter of a vehicle after starting, and determining a vehicle idle speed roughness factor according to a second operation parameter of the vehicle when the vehicle is detected to meet a preset activation condition based on the first operation parameter;
optionally, the idle speed rough factor calculation is exited based on the fourth operating parameter detecting that the vehicle meets a preset exit condition. Wherein the fourth operating parameter includes at least one of an engine accessory activation state, a gear change state, an engine operating state, and a canister state.
Optionally, the preset exit condition includes at least one of engine accessory operation or activation, a gear shift from a park or neutral gear to a reverse or drive gear, an engine operating state shift, a canister open, and a canister diagnostic operation.
Specifically, when all preset exit conditions are met by the vehicle, the idle speed rough factor calculation is exited; or the idle speed rough factor calculation can be exited when the preset number of preset exiting conditions are met according to manual setting; or the idle speed rough factor calculation can be exited when a certain preset exiting condition is met according to manual setting; the present embodiment is not limited thereto.
S220, determining a target standard limit value corresponding to the vehicle idle speed roughness factor according to a third running parameter of the vehicle and/or an environmental parameter of the environment where the vehicle is located;
s230, determining a vehicle roughness difference value based on the vehicle idle speed roughness factor and a target standard limit value;
s240, determining a target control coefficient based on a vehicle roughness difference value and a proportional-integral control result;
the proportional-integral control is understood as a fire path-gas path control. The target control coefficient may be understood as an injection control coefficient at the next start of the vehicle.
Specifically, the vehicle roughness difference is used as an input quantity by proportional control through a regulator, processed through an integrator, and a target control coefficient is output after passing through a maximum limit value and a minimum limit value. The target control factor is illustratively related to the fuel quality (e.g., volatility) of the vehicle fuel, and is determined. When the vehicle is changed into oil with poor fuel quality (the steam pressure is 40 kilopascals), the steam pressure of the fuel is an important index for representing the evaporation performance of the gasoline, and is related to the cold start performance and evaporation emission of the vehicle. The good evaporation property of the fuel can ensure that the engine is easy to start under various conditions, the better the evaporation property of the fuel is, the more easily the fuel is evaporated, and the engine can be smoothly started and normally operated under the cold or low temperature condition; conversely, if the fuel quality is poor in evaporability, incomplete vaporization of the gasoline component can lead to unstable engine operation and incomplete combustion, and finally lead to increased fuel consumption and increased emission. And (3) using data after standard fuel quality calibration, starting counting when the vehicle idle speed roughness factor is greater than a target standard limit value due to shaking of the rotating speed after the engine is started caused by lean air-fuel ratio to more than 1.15, outputting a target control coefficient for enrichment through proportional-integral control after the vehicle roughness difference value is greater than a preset threshold value, recovering the air-fuel ratio to 0.9-1, gradually recovering the vehicle roughness difference value to be near 0, stabilizing the engine combustion, and gradually setting the target control coefficient to 0.
S250, determining an oil injection control coefficient when the engine burns next time based on the target control coefficient and the current control coefficient of the vehicle, and performing oil injection control according to the oil injection control coefficient.
Specifically, the fuel injection control coefficient at the next combustion of the engine is determined based on the relationship between the target control coefficient and the current control coefficient of the vehicle.
Optionally, determining an oil injection control coefficient when the engine burns next time based on the target control coefficient and a current control coefficient of the vehicle, and performing oil injection control according to the oil injection control coefficient, including: and if the target control coefficient is larger than the current control coefficient of the vehicle, determining the target control coefficient as an oil injection control coefficient when the engine burns next time.
For example, if the target control coefficient of the vehicle is 1.2 when the current cylinder of the vehicle engine burns and the current control coefficient of the vehicle is 1, the fuel injection control coefficient of the next cylinder of the engine is determined to be 1.2, and compared with the current control coefficient of the vehicle, the fuel injection control coefficient of the next cylinder of the engine needs to be 0.2 more, and the fuel injection control system controls the vehicle to inject 20% more fuel when the next cylinder of the vehicle engine burns. And taking 1.2 as a current control coefficient when the next cylinder of the vehicle engine burns, and continuously determining an oil injection control coefficient when the third cylinder of the vehicle engine burns based on the target control coefficient and the current control coefficient of the vehicle.
Optionally, determining the fuel injection control coefficient of the next combustion of the engine based on the target control coefficient and the reference control coefficient includes: and if the current control coefficient of the vehicle reaches a preset oil injection control threshold value, stopping outputting the oil injection control coefficient.
The preset fuel injection control threshold may be preset empirically, which is not limited in this embodiment.
It will be appreciated that during the injection of fuel after a vehicle is started, the failure of the engine itself may also cause an excessive injection control coefficient to cause an excessive injection quantity, which exceeds a reasonable injection control threshold range, and may cause more serious adverse effects, such as an excessive injection quantity to cause unstable combustion of the engine. For example, if the preset oil injection control threshold is between 0% and 30%, and the calculated oil injection control coefficient is 1.4, and the current control coefficient is 1, 40% more oil needs to be sprayed when the next combustion is performed, and if the oil injection control coefficient exceeds the preset oil injection control threshold, it can be determined that the combustion is unstable due to the engine fault and the output of the oil injection control coefficient is stopped.
In the embodiment of the invention, the fuel injection coefficient of the next engine combustion is determined by calculating the target control coefficient and the current control coefficient of the vehicle, so that the fuel injection quantity is adjusted when the engine burns next time. And when the oil injection quantity exceeds a preset threshold value, the abnormality of the engine is found in time, so that unstable combustion of the engine caused by excessive oil injection quantity is avoided, and the combustion stability of the engine is improved.
According to the technical scheme of the embodiment, the proportional-integral control is performed based on the vehicle roughness difference value, and the target control coefficient is determined based on the proportional-integral control result; and accurately determining a target control coefficient to be adjusted under the current combustion condition of the engine, determining an oil injection control coefficient of the engine during the next combustion based on the target control coefficient and the current control coefficient of the vehicle, and performing oil injection control according to the oil injection control coefficient. And when the engine burns next time, the fuel injection quantity is accurately adjusted based on the fuel injection control coefficient, so that the combustion stability of the engine is improved.
FIG. 2b provides a flow chart of an alternative example of a method of controlling fuel injection after a vehicle is started. As shown in fig. 2b, the control method for fuel injection after vehicle start specifically includes the following steps:
step 1: a first operating parameter of the vehicle after start-up is obtained.
Step 2: and judging whether a preset activation condition of the idle speed rough factor is met.
The preset activation condition comprises: after the starting zone bit is reset for a preset time, the opening of the accelerator pedal is zero, the gear is a parking gear or a neutral gear, and the rotating speed of the transmitter meets at least one of the preset rotating speed and the vehicle speed is zero.
Step 3: and determining a vehicle idle speed roughness factor according to a second operation parameter of the vehicle under the condition that the vehicle is detected to meet the preset activation condition based on the first operation parameter.
Step 4: and determining a target standard limit value corresponding to the vehicle idle speed roughness factor according to a third running parameter of the vehicle and/or an environmental parameter of the environment where the vehicle is located.
Step 5: a vehicle roughness difference is determined based on the vehicle idle roughness factor and a target standard limit.
FIG. 2c provides a flow chart of calculating a vehicle roughness difference for an alternative example of a control method for fuel injection after a vehicle start. As shown in fig. 2c, an initial idle roughness factor of the vehicle is determined based on the time it takes for the engine to rotate a preset angle; and amplifying signals and filtering the absolute value of the initial idle speed roughness factor to obtain the vehicle idle speed roughness factor. And respectively determining the reference standard limit values corresponding to the starting water temperature and the actual water temperature, the engine speed and the load, the oil injection times and the rail pressure, and the plateau coefficient and the environment temperature. And adjusting the main standard limit value based on the reference standard limit value corresponding to the engine speed and the engine load, the reference standard limit value corresponding to the fuel injection and the rail pressure and the reference standard limit value corresponding to the plateau coefficient and the environmental temperature, and taking the adjusted main standard limit value as the target standard limit value. A vehicle roughness difference is determined based on the vehicle idle roughness factor and a target standard limit.
Step 6: and controlling the fuel injection after the vehicle is started based on the vehicle roughness difference value.
According to the technical scheme, the idle speed roughness factor of the vehicle is calculated under the preset activation condition of meeting the idle speed roughness factor, and the target standard limit value is determined according to the preset reference standard limit value. Determining a vehicle roughness difference based on the vehicle idle roughness factor and a target standard limit; and finally, controlling the fuel injection after the vehicle is started based on the vehicle roughness difference value, solving the problem of lower driving feeling of a user caused by unstable idle speed after the vehicle is started, effectively controlling the fuel injection after the vehicle is started, and maintaining the idle speed stability of the vehicle.
Example III
Fig. 3 is a schematic structural diagram of a control device for fuel injection after vehicle start according to a third embodiment of the present invention. As shown in fig. 3, the apparatus includes: an idle roughness factor determination module 310, an idle roughness factor determination module 320, a roughness difference determination module 330, and an injection control module 340.
The idle speed roughness factor determining module 310 is configured to obtain a first operation parameter of the vehicle after the vehicle is started, and determine a vehicle idle speed roughness factor according to a second operation parameter of the vehicle when the vehicle is detected to meet a preset activation condition based on the first operation parameter; a target standard limit value determining module 320, configured to determine a target standard limit value corresponding to the vehicle idle speed roughness factor according to a third running parameter of the vehicle and/or an environmental parameter of an environment in which the vehicle is located; a roughness difference determination module 330 for determining a vehicle roughness difference based on the vehicle idle roughness factor and a target standard limit; the fuel injection control module 340 is configured to control fuel injection after the vehicle is started based on the vehicle roughness difference.
According to the technical scheme of the embodiment, a first operation parameter after the vehicle is started is obtained through an idle speed roughness factor determining module, and the idle speed roughness factor of the vehicle is determined according to a second operation parameter of the vehicle under the condition that the vehicle is detected to meet the preset activation condition based on the first operation parameter; establishing a corresponding relation between a first operation parameter and a preset activation condition, accurately calculating a vehicle idle speed roughness factor of the vehicle under the preset activation condition, and then determining a target standard limit value corresponding to the vehicle idle speed roughness factor according to a third operation parameter of the vehicle and/or an environmental parameter of an environment where the vehicle is positioned through a target standard limit value determining module; the method comprises the steps of accurately determining a target standard limit value corresponding to a vehicle idle speed roughness silver group, and determining a vehicle roughness difference value based on the vehicle idle speed roughness factor and the target standard limit value through a roughness difference value determining module; and finally, controlling the fuel injection after the vehicle is started based on the vehicle roughness difference value by a fuel injection control module, solving the problem of lower driving feeling of a user caused by unstable idle speed after the vehicle is started, effectively controlling the fuel injection after the vehicle is started, and maintaining the idle speed stability of the vehicle.
Optionally, the preset activation condition includes: after the starting zone bit is reset for a preset time, the opening of the accelerator pedal is zero, the gear is a parking gear or a neutral gear, and the rotating speed of the transmitter meets at least one of the preset rotating speed and the vehicle speed is zero.
Optionally, the second operating parameter includes a rotation angle of the vehicle engine; accordingly, the idle roughness factor determination module includes:
an initial idle roughness factor determination unit for determining an initial idle roughness factor of the vehicle based on a time taken for the engine to rotate by a preset angle;
and the vehicle idle speed roughness factor determining unit is used for amplifying signals and filtering absolute values of the initial idle speed roughness factors to obtain the vehicle idle speed roughness factors.
Optionally, the target standard limit value determining module includes:
the first reference standard limit value determining unit is used for determining a reference standard limit value corresponding to the vehicle idle speed roughness factor according to a third running parameter of the vehicle and/or an environmental parameter of the environment where the vehicle is located;
and the target standard limit value determining unit is used for determining a target standard limit value corresponding to the vehicle idle speed roughness factor based on at least one reference standard limit value.
Optionally, the third operation parameter includes at least one operation parameter group, and the operation parameter group includes at least one group of parameters of starting water temperature and actual water temperature, engine rotation speed and load, and oil injection times and rail pressure; the environmental parameters include, but are not limited to, altitude coefficients and environmental temperature;
accordingly, the target standard limit determination module includes at least one of the following reference standard limit determination units:
a second reference standard limit value determining unit for determining a reference standard limit value corresponding to the vehicle idle speed roughness factor based on a starting water temperature and an actual water temperature of the vehicle;
a third reference standard limit value determining unit configured to determine a reference standard limit value corresponding to the vehicle idle speed roughness factor based on an engine speed and an engine load of a vehicle;
a fourth reference standard limit value determining unit for determining a reference standard limit value corresponding to the vehicle idle speed roughness factor based on the number of fuel injection times and rail pressure of the vehicle;
and a fifth reference standard limit value determining unit for determining a reference standard limit value corresponding to the vehicle idle speed roughness factor based on the altitude coefficient and the ambient temperature of the region where the vehicle is located.
Optionally, the target standard limit value determining unit includes:
a main standard limit value determination subunit configured to determine a reference standard limit value corresponding to a starting water temperature and an actual water temperature of the vehicle as a main standard limit value;
the target standard limit value determining subunit is used for adjusting the main standard limit value based on the reference standard limit value corresponding to the engine speed and the engine load, the reference standard limit value corresponding to the fuel injection and the rail pressure and the reference standard limit value corresponding to the plateau coefficient and the environment temperature, and taking the adjusted main standard limit value as the target standard limit value.
Optionally, the target standard limit value determining subunit is specifically configured to:
and taking the product of the main standard limit value, the reference standard limit value corresponding to the engine speed and the engine load, the reference standard limit value corresponding to the fuel injection and the rail pressure and the reference standard limit value corresponding to the plateau coefficient and the environment temperature as the target standard limit value.
Optionally, the fuel injection control module includes:
a target control coefficient determination unit for performing proportional-integral control based on the vehicle roughness difference value, and determining a target control coefficient based on a result of the proportional-integral control;
And the fuel injection control unit is used for determining a fuel injection control coefficient when the engine burns next time based on the target control coefficient and the current control coefficient of the vehicle, and performing fuel injection control according to the fuel injection control coefficient.
Optionally, the fuel injection control unit is specifically configured to:
and if the target control coefficient is larger than the current control coefficient of the vehicle, determining the target control coefficient as an oil injection control coefficient when the engine burns next time.
Optionally, the fuel injection control unit is specifically configured to:
and if the current control coefficient of the vehicle reaches a preset oil injection control threshold value, stopping outputting the oil injection control coefficient.
The control device for the oil injection after the vehicle start provided by the embodiment of the invention can execute the control method for the oil injection after the vehicle start provided by any embodiment of the invention, and has the corresponding functional modules and beneficial effects of the execution method.
Example IV
Fig. 4 shows a schematic diagram of the structure of an electronic device 10 that may be used to implement an embodiment of the invention. Electronic devices are intended to represent various forms of digital computers, such as laptops, desktops, workstations, personal digital assistants, servers, blade servers, mainframes, and other appropriate computers. Electronic equipment may also represent various forms of mobile devices, such as personal digital processing, cellular telephones, smartphones, wearable devices (e.g., helmets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions, are meant to be exemplary only, and are not meant to limit implementations of the inventions described and/or claimed herein.
As shown in fig. 4, the electronic device 10 includes at least one processor 11, and a memory, such as a Read Only Memory (ROM) 12, a Random Access Memory (RAM) 13, etc., communicatively connected to the at least one processor 11, in which the memory stores a computer program executable by the at least one processor, and the processor 11 may perform various appropriate actions and processes according to the computer program stored in the Read Only Memory (ROM) 12 or the computer program loaded from the storage unit 18 into the Random Access Memory (RAM) 13. In the RAM 13, various programs and data required for the operation of the electronic device 10 may also be stored. The processor 11, the ROM 12 and the RAM 13 are connected to each other via a bus 14. An input/output (I/O) interface 15 is also connected to bus 14.
Various components in the electronic device 10 are connected to the I/O interface 15, including: an input unit 16 such as a keyboard, a mouse, etc.; an output unit 17 such as various types of displays, speakers, and the like; a storage unit 18 such as a magnetic disk, an optical disk, or the like; and a communication unit 19 such as a network card, modem, wireless communication transceiver, etc. The communication unit 19 allows the electronic device 10 to exchange information/data with other devices via a computer network, such as the internet, and/or various telecommunication networks.
The processor 11 may be a variety of general and/or special purpose processing components having processing and computing capabilities. Some examples of processor 11 include, but are not limited to, a Central Processing Unit (CPU), a Graphics Processing Unit (GPU), various specialized Artificial Intelligence (AI) computing chips, various processors running machine learning model algorithms, digital Signal Processors (DSPs), and any suitable processor, controller, microcontroller, etc. The processor 11 performs the various methods and processes described above, such as control of fuel injection after vehicle start.
In some embodiments, the control of the method vehicle post-start injection may be implemented as a computer program tangibly embodied on a computer-readable storage medium, such as storage unit 18. In some embodiments, part or all of the computer program may be loaded and/or installed onto the electronic device 10 via the ROM 12 and/or the communication unit 19. When the computer program is loaded into RAM 13 and executed by processor 11, one or more steps of the above-described method of control of fuel injection after vehicle start may be performed. Alternatively, in other embodiments, processor 11 may be configured to perform control of the method vehicle post-start injection in any other suitable manner (e.g., by means of firmware).
Various implementations of the systems and techniques described here above may be implemented in digital electronic circuitry, integrated circuit systems, field Programmable Gate Arrays (FPGAs), application Specific Integrated Circuits (ASICs), application Specific Standard Products (ASSPs), systems On Chip (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and/or combinations thereof. These various embodiments may include: implemented in one or more computer programs, the one or more computer programs may be executed and/or interpreted on a programmable system including at least one programmable processor, which may be a special purpose or general-purpose programmable processor, that may receive data and instructions from, and transmit data and instructions to, a storage system, at least one input device, and at least one output device.
A computer program for carrying out methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the computer programs, when executed by the processor, cause the functions/acts specified in the flowchart and/or block diagram block or blocks to be implemented. The computer program may execute entirely on the machine, partly on the machine, as a stand-alone software package, partly on the machine and partly on a remote machine or entirely on the remote machine or server.
In the context of the present invention, a computer-readable storage medium may be a tangible medium that can contain, or store a computer program for use by or in connection with an instruction execution system, apparatus, or device. The computer readable storage medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. Alternatively, the computer readable storage medium may be a machine readable signal medium. More specific examples of a machine-readable storage medium would include an electrical connection based on one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
To provide for interaction with a user, the systems and techniques described here can be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to a user; and a keyboard and a pointing device (e.g., a mouse or a trackball) through which a user can provide input to the electronic device. Other kinds of devices may also be used to provide for interaction with a user; for example, feedback provided to the user may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form, including acoustic input, speech input, or tactile input.
The systems and techniques described here can be implemented in a computing system that includes a background component (e.g., as a data server), or that includes a middleware component (e.g., an application server), or that includes a front-end component (e.g., a user computer having a graphical user interface or a web browser through which a user can interact with an implementation of the systems and techniques described here), or any combination of such background, middleware, or front-end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: local Area Networks (LANs), wide Area Networks (WANs), blockchain networks, and the internet.
The computing system may include clients and servers. The client and server are typically remote from each other and typically interact through a communication network. The relationship of client and server arises by virtue of computer programs running on the respective computers and having a client-server relationship to each other. The server can be a cloud server, also called a cloud computing server or a cloud host, and is a host product in a cloud computing service system, so that the defects of high management difficulty and weak service expansibility in the traditional physical hosts and VPS service are overcome.
It should be appreciated that various forms of the flows shown above may be used to reorder, add, or delete steps. For example, the steps described in the present invention may be performed in parallel, sequentially, or in a different order, so long as the desired results of the technical solution of the present invention are achieved, and the present invention is not limited herein.
The above embodiments do not limit the scope of the present invention. It will be apparent to those skilled in the art that various modifications, combinations, sub-combinations and alternatives are possible, depending on design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of the present invention.
Claims (13)
1. A control method of fuel injection after starting a vehicle, characterized by comprising:
acquiring a first operation parameter after the vehicle is started, and determining a vehicle idle speed roughness factor according to a second operation parameter of the vehicle when the vehicle is detected to meet a preset activation condition based on the first operation parameter;
determining a target standard limit value corresponding to the vehicle idle speed roughness factor according to a third running parameter of the vehicle and/or an environmental parameter of the environment in which the vehicle is located;
Determining a vehicle roughness difference based on the vehicle idle roughness factor and a target standard limit;
and controlling the fuel injection after the vehicle is started based on the vehicle roughness difference value.
2. The method of claim 1, wherein the preset activation condition comprises: after the starting zone bit is reset for a preset time, the opening of the accelerator pedal is zero, the gear is a parking gear or a neutral gear, and the rotating speed of the transmitter meets at least one of the preset rotating speed and the vehicle speed is zero.
3. The method of claim 1, wherein the second operating parameter comprises a rotation angle of a vehicle engine; the determining a vehicle idle roughness factor according to the second operating parameter includes:
determining an initial idle roughness factor of the vehicle based on a time taken for the engine to rotate a preset angle;
and amplifying signals and filtering the absolute value of the initial idle speed roughness factor to obtain the vehicle idle speed roughness factor.
4. The method of claim 1, wherein determining a target standard limit value corresponding to the vehicle idle roughness factor based on a third operating parameter of the vehicle and/or an environmental parameter of an environment in which the vehicle is located comprises:
Determining a reference standard limit value corresponding to the vehicle idle speed roughness factor according to a third running parameter of the vehicle and/or an environmental parameter of the environment in which the vehicle is located;
a target standard limit corresponding to the vehicle idle roughness factor is determined based on at least one of the reference standard limits.
5. The method of claim 4, wherein the third operating parameter comprises at least one set of operating parameters including at least one of a starting water temperature and an actual water temperature, an engine speed and load, and a number of injections and a rail pressure; the environmental parameters include, but are not limited to, altitude coefficients and environmental temperature;
the determining the reference standard limit value corresponding to the vehicle idle speed roughness factor according to the third operation parameter of the vehicle and/or the environmental parameter of the environment where the vehicle is located comprises at least one of the following operations:
determining a reference standard limit value corresponding to the vehicle idle roughness factor based on a starting water temperature and an actual water temperature of the vehicle;
determining a reference standard limit corresponding to the vehicle idle roughness factor based on an engine speed and an engine load of the vehicle;
determining a reference standard limit value corresponding to the vehicle idle speed roughness factor based on the oil injection times and rail pressure of the vehicle;
A reference standard limit corresponding to the vehicle idle roughness factor is determined based on a plateau coefficient of an area in which the vehicle is located and an ambient temperature.
6. The method of claim 4, wherein the determining a target standard limit value corresponding to the vehicle idle roughness factor based on at least one of the reference standard limit values comprises:
determining a reference standard limit value corresponding to the starting water temperature and the actual water temperature of the vehicle as a main standard limit value;
and adjusting the main standard limit value based on the reference standard limit value corresponding to the engine speed and the engine load, the reference standard limit value corresponding to the fuel injection and the rail pressure and the reference standard limit value corresponding to the plateau coefficient and the environmental temperature, and taking the adjusted main standard limit value as the target standard limit value.
7. The method according to claim 6, wherein the adjusting the main standard limit value based on the reference standard limit value corresponding to the engine speed and the engine load, the reference standard limit value corresponding to the fuel injection and the rail pressure, and the reference standard limit value corresponding to the altitude coefficient and the ambient temperature, taking the adjusted main standard limit value as the target standard limit value, comprises:
And taking the product of the main standard limit value, the reference standard limit value corresponding to the engine speed and the engine load, the reference standard limit value corresponding to the fuel injection and the rail pressure and the reference standard limit value corresponding to the plateau coefficient and the environment temperature as the target standard limit value.
8. The method of claim 1, wherein controlling post-vehicle-start fuel injection based on the vehicle roughness difference comprises:
proportional-integral control is performed based on the vehicle roughness difference value, and a target control coefficient is determined based on the result of the proportional-integral control;
and determining an oil injection control coefficient of the engine in the next combustion based on the target control coefficient and the current control coefficient of the vehicle, and performing oil injection control according to the oil injection control coefficient.
9. The method of claim 8, wherein determining the fuel injection control coefficient for the next combustion of the engine based on the target control coefficient and the current control coefficient of the vehicle, and performing fuel injection control according to the fuel injection control coefficient, comprises:
and if the target control coefficient is larger than the current control coefficient of the vehicle, determining the target control coefficient as an oil injection control coefficient when the engine burns next time.
10. The method of claim 8, wherein the determining the fuel injection control coefficient for the next combustion of the engine based on the target control coefficient and a current control coefficient of the vehicle comprises:
and if the current control coefficient of the vehicle reaches a preset oil injection control threshold value, stopping outputting the oil injection control coefficient.
11. A control device for fuel injection after start of a vehicle, comprising:
the idle speed roughness factor determining module is used for acquiring a first running parameter of the vehicle after starting, and determining the idle speed roughness factor of the vehicle according to a second running parameter of the vehicle when the condition that the vehicle meets a preset activation condition is detected based on the first running parameter;
the target standard limit value determining module is used for determining a target standard limit value corresponding to the vehicle idle speed roughness factor according to a third running parameter of the vehicle and/or an environmental parameter of the environment where the vehicle is located;
the roughness difference value determining module is used for determining a vehicle roughness difference value based on the vehicle idle speed roughness factor and a target standard limit value;
and the fuel injection control module is used for controlling fuel injection after the vehicle is started based on the vehicle roughness difference value.
12. An electronic device, the electronic device comprising:
At least one processor; and
a memory communicatively coupled to the at least one processor; wherein, the liquid crystal display device comprises a liquid crystal display device,
the memory stores a computer program executable by the at least one processor to enable the at least one processor to perform the control method of fuel injection after start of the vehicle of any one of claims 1-10.
13. A computer readable storage medium, characterized in that the computer readable storage medium stores computer instructions for causing a processor to execute a control method of fuel injection after start of a vehicle according to any one of claims 1-10.
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| CN202310854712.9A CN116950794A (en) | 2023-07-12 | 2023-07-12 | Method, device, equipment and storage medium for controlling fuel injection after vehicle start |
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