CN116971885A - Correction method and device for fuel injection timing of diesel engine, diesel vehicle and storage medium - Google Patents
Correction method and device for fuel injection timing of diesel engine, diesel vehicle and storage medium Download PDFInfo
- Publication number
- CN116971885A CN116971885A CN202311027888.3A CN202311027888A CN116971885A CN 116971885 A CN116971885 A CN 116971885A CN 202311027888 A CN202311027888 A CN 202311027888A CN 116971885 A CN116971885 A CN 116971885A
- Authority
- CN
- China
- Prior art keywords
- injection timing
- diesel engine
- fuel injection
- correction
- temperature
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000012937 correction Methods 0.000 title claims abstract description 247
- 238000002347 injection Methods 0.000 title claims abstract description 216
- 239000007924 injection Substances 0.000 title claims abstract description 216
- 239000000446 fuel Substances 0.000 title claims abstract description 146
- 238000000034 method Methods 0.000 title claims abstract description 56
- 239000010710 diesel engine oil Substances 0.000 claims abstract description 25
- 239000003921 oil Substances 0.000 claims abstract description 19
- 239000002283 diesel fuel Substances 0.000 claims description 21
- 238000004590 computer program Methods 0.000 claims description 18
- 238000004880 explosion Methods 0.000 abstract description 9
- 230000007613 environmental effect Effects 0.000 description 22
- 238000004891 communication Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 7
- 230000006870 function Effects 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 238000002485 combustion reaction Methods 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 238000003491 array Methods 0.000 description 1
- 238000013473 artificial intelligence Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 239000010724 circulating oil Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000010801 machine learning Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000001953 sensory effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- 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
- F02D41/401—Controlling injection timing
-
- 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
-
- 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
Landscapes
- 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)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
The embodiment of the invention discloses a diesel engine fuel injection timing correction method and device, a diesel vehicle and a storage medium. The correction method of the diesel engine fuel injection timing comprises the following steps: correcting the basic fuel injection timing of the diesel engine according to the temperature of the intake manifold to obtain a manifold temperature timing correction; correcting the basic fuel injection timing of the diesel engine according to the ambient temperature to obtain an ambient temperature timing correction; determining a total injection timing correction for the diesel engine based on the manifold temperature timing correction, the ambient temperature timing correction, and the excess air factor deviation correction coefficient; and determining a diesel engine oil injection timing correction value according to the fault state of the sensor, and determining a corrected diesel engine oil injection timing based on the diesel engine oil injection timing correction value and the diesel engine basic oil injection timing. The invention can realize reasonable adjustment of the fuel injection timing of the diesel engine, and avoid the excessive high explosion pressure in the cylinder of the diesel engine from exceeding the limit value, thereby ensuring the safety of the structure of the diesel engine.
Description
Technical Field
The embodiment of the invention relates to the technical field of diesel engine control, in particular to a diesel engine oil injection timing correction method and device, a diesel vehicle and a storage medium.
Background
The working principle of the diesel engine is that pure air is sucked in through an air inlet stroke, and fuel is sprayed into high-temperature and high-pressure air to burn when reaching a compression stroke top dead center, so that heat is generated to provide power. However, in order to ensure that a good mixture and combustion process are formed, the injection timing of the injector must be advanced by a certain amount, i.e. the injection timing. The control of the injection timing of a diesel engine is actually the control of the injection advance angle of the injector.
Under special environmental conditions, such as extremely low environmental temperature and extremely low engine temperature, the reasonable adjustment of the fuel injection timing cannot be realized, so that the combustion explosion pressure in a cylinder of the diesel engine is too high to exceed the limit value, and the problem of damaging the structural safety of the diesel engine exists.
Disclosure of Invention
The invention provides a correction method and device for fuel injection timing of a diesel engine, a diesel vehicle and a storage medium, so as to realize reasonable adjustment of the fuel injection timing of the diesel engine, avoid that the explosion pressure in a cylinder of the diesel engine is too high to exceed a limit value, and further ensure the safety of a diesel engine structure.
According to an aspect of the present invention, there is provided a method of correcting a diesel engine fuel injection timing, the method of correcting a diesel engine fuel injection timing including:
correcting the basic fuel injection timing of the diesel engine according to the temperature of the intake manifold to obtain a manifold temperature timing correction;
correcting the basic fuel injection timing of the diesel engine according to the ambient temperature to obtain an ambient temperature timing correction;
determining a total injection timing correction for the diesel engine based on the manifold temperature timing correction, the ambient temperature timing correction, and an excess air factor deviation correction coefficient;
and determining a diesel engine oil injection timing correction value according to the fault state of the sensor, and determining the corrected diesel engine oil injection timing based on the diesel engine oil injection timing correction value and the diesel engine basic oil injection timing.
Optionally, before correcting the basic fuel injection timing of the diesel engine according to the temperature of the intake manifold to obtain the correction amount of the manifold temperature timing, the method further comprises: the base fuel injection timing for the diesel engine is determined based on a look-up table of engine speed, engine cycle fuel supply, and base fuel injection timing.
Optionally, the correcting the basic fuel injection timing of the diesel engine according to the intake manifold temperature to obtain a manifold temperature timing correction includes:
determining a manifold temperature correction coefficient based on the intake manifold temperature, determining a diesel manifold correction fuel injection timing based on the engine speed and the engine cycle fuel supply, and determining the manifold temperature timing correction based on the manifold temperature correction coefficient and the diesel manifold correction fuel injection timing.
Optionally, the correcting the basic fuel injection timing of the diesel engine according to the ambient temperature to obtain the ambient temperature timing correction includes:
and determining an environment temperature correction coefficient according to the environment temperature, determining a diesel engine environment temperature correction fuel injection timing according to the engine rotating speed and the engine cycle fuel supply quantity, and determining the environment temperature timing correction amount based on the environment temperature correction coefficient and the diesel engine environment temperature correction fuel injection timing.
Optionally, the determining the total fuel injection timing correction of the diesel engine based on the manifold temperature timing correction, the ambient temperature timing correction, and the excess air factor deviation correction coefficient includes:
and determining an excess air coefficient deviation correction coefficient according to the target excess air coefficient and the excess air coefficient deviation, wherein the product of the manifold temperature timing correction and the ambient temperature timing correction and the excess air coefficient deviation correction coefficient after the addition is the total fuel injection timing correction of the diesel engine.
Optionally, the fault state according to the sensor includes: at least one of an intake manifold temperature sensor fault condition, an ambient temperature sensor fault condition, an intake pressure sensor fault condition, a venturi differential pressure sensor fault condition, and a venturi temperature sensor fault condition.
Optionally, the determining the corrected diesel fuel injection timing based on the diesel fuel injection timing correction value and the diesel base fuel injection timing includes:
when the fault state of the sensor meets the preset condition, the total fuel injection timing correction amount of the diesel engine is equal to the fuel injection timing correction value of the diesel engine, and the fuel injection timing correction value of the diesel engine is added with the basic fuel injection timing of the diesel engine to obtain the corrected fuel injection timing of the diesel engine.
According to another aspect of the present invention, there is provided a correction device of a diesel engine fuel injection timing, the correction device of a diesel engine fuel injection timing including:
the manifold temperature timing correction amount determining module is used for correcting the basic fuel injection timing of the diesel engine according to the temperature of the intake manifold to obtain manifold temperature timing correction amount;
the environment temperature timing correction amount determining module is used for correcting the basic fuel injection timing of the diesel engine according to the environment temperature to obtain the environment temperature timing correction amount;
a total injection timing correction determination module configured to determine a total injection timing correction for the diesel engine based on the manifold temperature timing correction, the ambient temperature timing correction, and an excess air factor deviation correction coefficient;
and the fuel injection timing correction determining module is used for determining a fuel injection timing correction value of the diesel engine according to the fault state of the sensor and determining the corrected fuel injection timing of the diesel engine based on the fuel injection timing correction value of the diesel engine and the basic fuel injection timing of the diesel engine.
According to another aspect of the present invention, there is also provided a diesel vehicle including:
one or more processors;
a memory for storing one or more programs;
when the one or more programs are executed by the one or more processors, the one or more processors implement the method for correcting the fuel injection timing of the diesel engine according to the embodiment of the invention.
According to another aspect of the present invention, there is also provided a computer readable storage medium having stored thereon a computer program, wherein the computer program when executed by a processor implements a method for correcting a diesel fuel injection timing according to an embodiment of the present invention.
The technical scheme of the embodiment of the invention provides a correction method for the oil injection timing of a diesel engine with explosion-proof pressure overrun, which is a diesel engine oil injection timing correction strategy under special environmental conditions, is mainly applied to the development and calibration process of software of a diesel engine electric control system, and relates to the performance control and calibration realization of a bench and a whole-vehicle simulated diesel engine under a nonstandard environment. The correction method can realize the correction of the fuel injection timing under different intake manifold temperature conditions and different environment temperature conditions, and simultaneously the introduced excess air coefficient deviation coefficient function can rationalize the correction quantity and assign values in the dynamic process of the diesel engine, so that the mechanical safety of the diesel engine is ensured, and the acceleration response rate is not reduced; further, reasonable adjustment of the fuel injection timing of the diesel engine can be realized, and the condition that the explosion pressure in the cylinder of the diesel engine is too high to exceed the limit value is avoided, so that the safety of the structure of the diesel engine is ensured. In summary, the invention solves the problems that the fuel injection timing of the diesel engine cannot be reasonably adjusted under special environmental conditions, so that the combustion explosion pressure in the cylinder of the diesel engine is too high to exceed the limit value, and the structural safety of the diesel engine is endangered.
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 correcting fuel injection timing of a diesel engine according to an embodiment of the present invention;
FIG. 2 is a flow chart of yet another method for correcting fuel injection timing of a diesel engine according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of an injection timing correction strategy for preventing explosion pressure overrun of a diesel engine according to an embodiment of the present invention;
FIG. 4 is a flow chart of yet another method for correcting fuel injection timing of a diesel engine according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a device for correcting fuel injection timing of a diesel engine according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a diesel vehicle 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.
Fig. 1 is a flowchart of a method for correcting a diesel fuel injection timing according to an embodiment of the present invention, and referring to fig. 1, an embodiment of the present invention provides a method for correcting a diesel fuel injection timing, which may be performed by a device for correcting a diesel fuel injection timing, which may be integrated in a diesel vehicle, and which may be implemented by software and/or hardware.
The correction method of the diesel engine fuel injection timing comprises the following steps:
s110, correcting the basic fuel injection timing of the diesel engine according to the temperature of the intake manifold to obtain the manifold temperature timing correction.
Specifically, the mode of determining the fuel injection timing of the diesel engine by maintaining the inquired graphs of the engine speed, the engine cycle fuel supply amount and the basic fuel injection timing is unchanged, and the temperature of the intake manifold is added to correct the fuel injection timing. The method comprises the steps of taking the temperature of an intake manifold as an input condition, obtaining a manifold temperature correction coefficient by inquiring a curve which can be inquired by the temperature correction of the intake manifold, taking the rotational speed of an engine and the circulating oil supply quantity of the engine as input conditions, obtaining a diesel engine manifold correction oil injection timing by inquiring a diagram which can be inquired by the temperature correction oil injection timing of the intake manifold, and calculating the manifold temperature timing correction quantity by multiplying the manifold temperature correction coefficient and the diesel engine manifold correction oil injection timing.
S120, correcting the basic fuel injection timing of the diesel engine according to the ambient temperature to obtain an ambient temperature timing correction amount.
Specifically, the mode of determining the fuel injection timing of the diesel engine by maintaining the inquired charts of the engine speed, the engine cycle fuel supply amount and the basic fuel injection timing is unchanged, and the fuel injection timing is corrected by adding the ambient temperature. The environmental temperature is used as an input condition, an environmental temperature correction coefficient is obtained by inquiring a curve which can be inquired by the environmental temperature correction, the engine speed and the engine cycle oil supply are used as input conditions, the diesel engine environmental temperature correction oil injection timing is obtained by inquiring a graph which can be inquired by the environmental temperature correction oil injection timing, and the environmental temperature correction coefficient and the diesel engine environmental temperature correction oil injection timing are multiplied by each other to calculate the environmental temperature timing correction.
S130, determining the total fuel injection timing correction of the diesel engine based on the manifold temperature timing correction, the ambient temperature timing correction and the excess air coefficient deviation correction coefficient.
Specifically, the result of correcting the fuel injection timing under the correction of the manifold temperature timing correction and the correction of the environment temperature timing correction (the fuel injection timing corrected by the manifold of the diesel engine and the fuel injection timing corrected by the environment temperature of the diesel engine) is added, and the added sum is multiplied by the deviation correction coefficient of the excessive air coefficient to obtain the total fuel injection timing correction of the diesel engine.
S140, determining a diesel engine oil injection timing correction value according to the fault state of the sensor, and determining the corrected diesel engine oil injection timing based on the diesel engine oil injection timing correction value and the diesel engine basic oil injection timing.
Specifically, the correction function is closed after the related sensor fails, the diesel engine oil injection timing correction value is determined after the fault state of the related sensor is judged, and the sum of the diesel engine oil injection timing correction value and the basic diesel engine oil injection timing is the corrected diesel engine oil injection timing.
The technical scheme of the embodiment of the invention provides a correction method for the oil injection timing of a diesel engine with explosion-proof pressure overrun, which is a diesel engine oil injection timing correction strategy under special environmental conditions, is mainly applied to the development and calibration process of software of a diesel engine electric control system, and relates to the performance control and calibration realization of a bench and a whole-vehicle simulated diesel engine under a nonstandard environment. The correction method can realize the correction of the fuel injection timing under different intake manifold temperature conditions and different environment temperature conditions, and simultaneously the introduced excess air coefficient deviation coefficient function can rationalize the correction quantity and assign values in the dynamic process of the diesel engine, so that the mechanical safety of the diesel engine is ensured, and the acceleration response rate is not reduced; further, reasonable adjustment of the fuel injection timing of the diesel engine can be realized, and the condition that the explosion pressure in the cylinder of the diesel engine is too high to exceed the limit value is avoided, so that the safety of the structure of the diesel engine is ensured. In summary, the invention solves the problems that the fuel injection timing of the diesel engine cannot be reasonably adjusted under special environmental conditions, so that the combustion explosion pressure in the cylinder of the diesel engine is too high to exceed the limit value, and the structural safety of the diesel engine is endangered.
The present embodiment is refined based on the foregoing embodiment, fig. 2 is a flowchart of another method for correcting fuel injection timing of a diesel engine according to an embodiment of the present invention, and fig. 3 is a schematic diagram of a fuel injection timing correction strategy for preventing explosion pressure from exceeding a limit, provided according to an embodiment of the present invention, and referring to fig. 2 and 3, the method includes:
s210, determining the basic fuel injection timing of the diesel engine based on a table capable of inquiring the engine speed, the engine cycle fuel supply amount and the basic fuel injection timing.
Specifically, the basic injection timing of the diesel engine is obtained by searching a table 14 with the basic injection timing being searched in a software table look-up mode by taking the engine speed 1 and the engine cycle oil supply quantity 2 as input conditions.
S220, correcting the basic fuel injection timing of the diesel engine according to the temperature of the intake manifold to obtain the manifold temperature timing correction.
S230, correcting the basic fuel injection timing of the diesel engine according to the ambient temperature to obtain an ambient temperature timing correction amount.
S240, determining the total injection timing correction of the diesel engine based on the manifold temperature timing correction, the ambient temperature timing correction and the excess air coefficient deviation correction coefficient.
S250, determining a diesel engine oil injection timing correction value according to the fault state of the sensor, and determining the corrected diesel engine oil injection timing based on the diesel engine oil injection timing correction value and the diesel engine basic oil injection timing.
The present embodiment is refined based on the foregoing embodiment, and fig. 4 is a flowchart of a method for correcting a fuel injection timing of a diesel engine according to an embodiment of the present invention, and referring to fig. 3 and fig. 4, the method includes:
s310, determining the basic fuel injection timing of the diesel engine based on a table capable of inquiring the engine speed, the engine cycle fuel supply amount and the basic fuel injection timing.
S320, determining a manifold temperature correction coefficient according to the temperature of the intake manifold, determining a diesel manifold correction fuel injection timing according to the engine speed and the engine cycle fuel supply, and determining a manifold temperature timing correction amount based on the manifold temperature correction coefficient and the diesel manifold correction fuel injection timing.
Specifically, the manifold temperature correction coefficient is obtained by searching a curve 18 which can be searched for the manifold temperature correction by taking the intake manifold temperature 5 as an input condition, the diesel engine manifold correction fuel injection timing is obtained by searching a table 17 which can be searched for the manifold temperature correction fuel injection timing by taking the engine speed 1 and the engine cycle fuel supply amount 2 as input conditions, and the manifold temperature timing correction amount is calculated by multiplying the manifold temperature correction coefficient and the diesel engine manifold correction fuel injection timing by a multiplication operation 21.
S330, determining an ambient temperature correction coefficient according to the ambient temperature, determining a diesel engine ambient temperature correction fuel injection timing according to the engine speed and the engine cycle fuel supply, and determining an ambient temperature timing correction amount based on the ambient temperature correction coefficient and the diesel engine ambient temperature correction fuel injection timing.
Specifically, the environmental temperature 6 is used as an input condition, an environmental temperature correction coefficient is obtained by inquiring a curve 20 which can be inquired by the environmental temperature correction, the engine speed 1 and the engine cycle oil supply quantity 2 are used as input conditions, the diesel engine environmental temperature correction oil injection timing is obtained by inquiring a chart 19 which can be inquired by the environmental temperature correction oil injection timing, and the environmental temperature correction coefficient and the diesel engine environmental temperature correction oil injection timing are multiplied by a multiplication operation 21 to calculate the environmental temperature timing correction.
S340, determining an excess air coefficient deviation correction coefficient according to the target excess air coefficient and the excess air coefficient deviation, wherein the product of the manifold temperature timing correction and the excess air coefficient deviation correction coefficient after the addition of the ambient temperature timing correction is the total fuel injection timing correction of the diesel engine.
Specifically, the excess air factor deviation correction coefficient is obtained by inquiring a graph 16 with the target excess air factor 3 and the excess air factor deviation 4 as input conditions and the excess air factor deviation correction coefficient can be inquired; the total fuel injection timing correction amount of the diesel engine is calculated by multiplying the sum of the manifold temperature timing correction amount and the ambient temperature timing correction amount by the addition operation 22 and the excess air ratio deviation correction coefficient by the multiplication operation 21.
In practical application, the excess air coefficient value can be collected by using an excess air coefficient sensor, and the collected excess air coefficient value is used as an actually measured excess air coefficient value; the target excess air ratio and the excess air ratio deviation may be set as needed.
With continued reference to fig. 3, optionally, the sensor includes, based on a fault condition: at least one of an intake manifold temperature sensor fault condition, an ambient temperature sensor fault condition, an intake pressure sensor fault condition, a venturi differential pressure sensor fault condition, and a venturi temperature sensor fault condition.
Specifically, the intake manifold temperature sensor fault state 7, the ambient temperature sensor fault state 8, the intake air pressure sensor fault state 9, the venturi tube pressure sensor fault state 10, the venturi tube differential pressure sensor fault state 11, and the venturi tube temperature sensor fault state 12 are taken as input conditions, and if the conditions have the fault states, the condition selection operation 23 selects the output result diesel fuel injection timing correction value 24 to be equal to the 0 input correction value 15.
S350, when the fault state of the sensor meets the preset condition, the total fuel injection timing correction amount of the diesel engine is equal to the fuel injection timing correction value of the diesel engine, and the fuel injection timing correction value of the diesel engine is added with the basic fuel injection timing of the diesel engine to obtain the corrected fuel injection timing of the diesel engine.
Specifically, after the judgment of the condition selection operation 23, if no fault occurs in the sensor, the total fuel injection timing correction amount of the diesel engine is equal to the fuel injection timing correction value 24 of the diesel engine, and the addition operation 22 is performed on the fuel injection timing correction value 24 of the diesel engine and the basic fuel injection timing of the diesel engine, so as to obtain the corrected fuel injection timing 13 of the diesel engine.
Fig. 5 is a schematic structural diagram of a diesel engine fuel injection timing correction device according to an embodiment of the present invention, and referring to fig. 5, an embodiment of the present invention further provides a diesel engine fuel injection timing correction device, where the diesel engine fuel injection timing correction device includes:
the manifold temperature timing correction amount determining module 501 is configured to correct a basic fuel injection timing of the diesel engine according to an intake manifold temperature to obtain a manifold temperature timing correction amount;
the ambient temperature timing correction amount determining module 502 is configured to correct a basic fuel injection timing of the diesel engine according to an ambient temperature to obtain an ambient temperature timing correction amount;
a total injection timing correction determination module 503 for determining a total injection timing correction of the diesel engine based on the manifold temperature timing correction, the ambient temperature timing correction, and the excess air factor deviation correction coefficient;
the fuel injection timing correction determining module 504 is configured to determine a diesel fuel injection timing correction value according to a fault state of the sensor, and determine a corrected diesel fuel injection timing based on the diesel fuel injection timing correction value and the diesel basic fuel injection timing.
The diesel engine oil injection timing correction device can execute the diesel engine oil injection timing correction method provided by any embodiment of the invention, and has the corresponding functional modules and beneficial effects of executing the diesel engine oil injection timing correction method.
Alternatively, the manifold temperature correction amount determination module 501 is specifically configured to determine a manifold temperature correction coefficient based on the intake manifold temperature, determine a diesel manifold correction fuel injection timing based on the engine speed and the engine cycle fuel supply, and determine a manifold temperature timing correction amount based on the manifold temperature correction coefficient and the diesel manifold correction fuel injection timing.
Optionally, the ambient temperature correction amount determination module 502 is specifically configured to determine an ambient temperature correction coefficient based on the ambient temperature, determine a diesel ambient temperature correction fuel injection timing based on the engine speed and the engine cycle fuel supply, and determine an ambient temperature timing correction amount based on the ambient temperature correction coefficient and the diesel ambient temperature correction fuel injection timing.
Alternatively, the total injection timing correction determination module 503 is specifically configured to determine an excess air ratio deviation correction coefficient according to the target excess air ratio and the excess air ratio deviation, and the product of the manifold temperature timing correction and the ambient temperature timing correction added to the excess air ratio deviation correction coefficient is the total injection timing correction of the diesel engine.
Optionally, the fuel injection timing correction determining module 504 is specifically configured to determine, when the fault state of the sensor satisfies a preset condition, a total fuel injection timing correction of the diesel engine equal to a diesel fuel injection timing correction value, and adding the diesel fuel injection timing correction value to the diesel fuel injection base timing to obtain a corrected diesel fuel injection timing.
Fig. 6 shows a schematic diagram of a diesel vehicle 610 that may be used to implement an embodiment of the present invention. Diesel vehicles 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. Diesel vehicles may also represent various forms of mobile devices such as personal digital assistants, cellular telephones, smart phones, 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. 6, the diesel vehicle 610 includes at least one processor 611, and a memory, such as a Read Only Memory (ROM) 612, a Random Access Memory (RAM) 613, etc., communicatively connected to the at least one processor 611, in which the memory stores a computer program executable by the at least one processor, and the processor 611 can perform various suitable actions and processes according to the computer program stored in the Read Only Memory (ROM) 612 or the computer program loaded from the storage unit 618 into the Random Access Memory (RAM) 613. In the RAM 613, various programs and data required for the operation of the diesel vehicle 610 can also be stored. The processor 611, the ROM612, and the RAM 613 are connected to each other by a bus 614. An input/output (I/O) interface 615 is also connected to bus 614.
Various components in the diesel vehicle 610 are connected to the I/O interface 615, including: an input unit 616 such as a keyboard, mouse, etc.; an output unit 617 such as various types of displays, speakers, and the like; a storage unit 618, such as a magnetic disk, optical disk, etc.; and a communication unit 619 such as a network card, modem, wireless communication transceiver, etc. The communication unit 619 allows the diesel vehicle 610 to exchange information/data with other devices through a computer network such as the internet and/or various telecommunication networks.
Processor 611 may be a variety of general and/or special purpose processing components having processing and computing capabilities. Some examples of processor 611 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 611 executes the various methods and processes described above, such as a correction method for diesel fuel injection timing.
In some embodiments, the method of correcting diesel fuel injection timing may be implemented as a computer program tangibly embodied on a computer-readable storage medium, such as the storage unit 618. In some embodiments, part or all of the computer program may be loaded and/or installed onto the diesel vehicle 610 via the ROM612 and/or the communication unit 619. When a computer program is loaded into RAM 613 and executed by processor 611, one or more steps of the diesel fuel injection timing correction method described above may be performed. Alternatively, in other embodiments, processor 611 may be configured to perform the correction method of diesel fuel injection timing 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 a diesel vehicle 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 pointing device (e.g., a mouse or a trackball) through which a user can provide input to the diesel vehicle. 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 (10)
1. A method for correcting a fuel injection timing of a diesel engine, comprising:
correcting the basic fuel injection timing of the diesel engine according to the temperature of the intake manifold to obtain a manifold temperature timing correction;
correcting the basic fuel injection timing of the diesel engine according to the ambient temperature to obtain an ambient temperature timing correction;
determining a total injection timing correction for the diesel engine based on the manifold temperature timing correction, the ambient temperature timing correction, and an excess air factor deviation correction coefficient;
and determining a diesel engine oil injection timing correction value according to the fault state of the sensor, and determining the corrected diesel engine oil injection timing based on the diesel engine oil injection timing correction value and the diesel engine basic oil injection timing.
2. The method of claim 1, wherein said correcting the basic injection timing of the diesel engine based on the intake manifold temperature further comprises, prior to obtaining the manifold temperature timing correction: the base fuel injection timing for the diesel engine is determined based on a look-up table of engine speed, engine cycle fuel supply, and base fuel injection timing.
3. The method of claim 2 wherein correcting the base injection timing of the diesel engine based on the intake manifold temperature to obtain a manifold temperature timing correction comprises:
determining a manifold temperature correction coefficient based on the intake manifold temperature, determining a diesel manifold correction fuel injection timing based on the engine speed and the engine cycle fuel supply, and determining the manifold temperature timing correction based on the manifold temperature correction coefficient and the diesel manifold correction fuel injection timing.
4. The method of claim 2, wherein correcting the base injection timing of the diesel engine based on the ambient temperature to obtain the ambient temperature timing correction comprises:
and determining an environment temperature correction coefficient according to the environment temperature, determining a diesel engine environment temperature correction fuel injection timing according to the engine rotating speed and the engine cycle fuel supply quantity, and determining the environment temperature timing correction amount based on the environment temperature correction coefficient and the diesel engine environment temperature correction fuel injection timing.
5. The method of claim 1, wherein the determining a total injection timing correction for the diesel engine based on the manifold temperature timing correction, the ambient temperature timing correction, and an excess air factor deviation correction coefficient comprises:
and determining an excess air coefficient deviation correction coefficient according to the target excess air coefficient and the excess air coefficient deviation, wherein the product of the manifold temperature timing correction and the ambient temperature timing correction and the excess air coefficient deviation correction coefficient after the addition is the total fuel injection timing correction of the diesel engine.
6. The method of claim 1, wherein the fault condition based on the sensor comprises: at least one of an intake manifold temperature sensor fault condition, an ambient temperature sensor fault condition, an intake pressure sensor fault condition, a venturi differential pressure sensor fault condition, and a venturi temperature sensor fault condition.
7. The method of claim 1, wherein said determining a corrected diesel fuel injection timing based on said diesel fuel injection timing correction and said diesel base fuel injection timing comprises:
when the fault state of the sensor meets the preset condition, the total fuel injection timing correction amount of the diesel engine is equal to the fuel injection timing correction value of the diesel engine, and the fuel injection timing correction value of the diesel engine is added with the basic fuel injection timing of the diesel engine to obtain the corrected fuel injection timing of the diesel engine.
8. A diesel engine fuel injection timing correction device, comprising:
the manifold temperature timing correction amount determining module is used for correcting the basic fuel injection timing of the diesel engine according to the temperature of the intake manifold to obtain manifold temperature timing correction amount;
the environment temperature timing correction amount determining module is used for correcting the basic fuel injection timing of the diesel engine according to the environment temperature to obtain the environment temperature timing correction amount;
a total injection timing correction determination module configured to determine a total injection timing correction for the diesel engine based on the manifold temperature timing correction, the ambient temperature timing correction, and an excess air factor deviation correction coefficient;
and the fuel injection timing correction determining module is used for determining a fuel injection timing correction value of the diesel engine according to the fault state of the sensor and determining the corrected fuel injection timing of the diesel engine based on the fuel injection timing correction value of the diesel engine and the basic fuel injection timing of the diesel engine.
9. A diesel vehicle, the diesel vehicle comprising:
one or more processors;
a memory for storing one or more programs;
when executed by the one or more processors, causes the one or more processors to implement the method of correcting a diesel fuel injection timing as claimed in any one of claims 1 to 7.
10. A computer-readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements a method for correcting the injection timing of a diesel engine according to any one of claims 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311027888.3A CN116971885A (en) | 2023-08-15 | 2023-08-15 | Correction method and device for fuel injection timing of diesel engine, diesel vehicle and storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311027888.3A CN116971885A (en) | 2023-08-15 | 2023-08-15 | Correction method and device for fuel injection timing of diesel engine, diesel vehicle and storage medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116971885A true CN116971885A (en) | 2023-10-31 |
Family
ID=88481508
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311027888.3A Pending CN116971885A (en) | 2023-08-15 | 2023-08-15 | Correction method and device for fuel injection timing of diesel engine, diesel vehicle and storage medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116971885A (en) |
-
2023
- 2023-08-15 CN CN202311027888.3A patent/CN116971885A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN115761130A (en) | Three-dimensional scene rapid construction method and device, electronic equipment and storage medium | |
| CN114961963B (en) | Intercooling circulating water pump control method, device, equipment and storage medium | |
| CN116971885A (en) | Correction method and device for fuel injection timing of diesel engine, diesel vehicle and storage medium | |
| CN114743608A (en) | Method and device for determining environmental factor of NOx model, electronic equipment and medium | |
| CN114704401B (en) | Engine oil amount control method, engine oil amount control device, electronic equipment, engine oil amount control program and vehicle | |
| CN116181511B (en) | Thermodynamic-based dual fuel injection quantity control method, device, equipment and medium | |
| CN115992772B (en) | Engine control method, device, equipment and storage medium | |
| CN114738131B (en) | Method, device, equipment and medium for controlling idle speed oil injection of multi-cylinder engine | |
| CN117685116A (en) | Method, device and storage medium for correcting fuel of separate cylinders of engine | |
| CN117540635A (en) | Engine compression ratio evaluation method and device and electronic equipment | |
| CN117090703A (en) | Vehicle and fuel injection control method and device thereof | |
| CN115977822A (en) | Oil injection parameter control method and device, diesel vehicle and storage medium | |
| CN115511047B (en) | Quantification method, device, equipment and medium of Softmax model | |
| CN117536720A (en) | Method, device, equipment and medium for adjusting engine rotation speed | |
| CN118278300A (en) | Method, device and equipment for simulating and calculating engine oil pressure and storage medium | |
| CN117780524B (en) | Hydrogen engine control method and device, vehicle and storage medium | |
| CN118190431A (en) | Engine flashback detection method and device, electronic equipment and storage medium | |
| CN114837869B (en) | Start control method, device, terminal, vehicle and medium | |
| CN117780522B (en) | Hydrogen engine control method and device, vehicle and storage medium | |
| CN114962014A (en) | Fuel distribution method, device, electronic equipment and storage medium | |
| CN116378866A (en) | EGR module pressure sensor detection method and device, vehicle and storage medium | |
| CN117145609A (en) | Exhaust temperature adjusting method and device, electronic equipment and storage medium | |
| CN117302166A (en) | Parallel system torque distribution method, device, equipment and medium | |
| CN117345446A (en) | EGR rate control method and device, vehicle and storage medium | |
| CN116039642A (en) | Vehicle fuel-saving control method, device, equipment and storage medium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |