CN112555039A - Engine control method and system based on smoke intensity working condition recognition - Google Patents
Engine control method and system based on smoke intensity working condition recognition Download PDFInfo
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- CN112555039A CN112555039A CN202011272048.XA CN202011272048A CN112555039A CN 112555039 A CN112555039 A CN 112555039A CN 202011272048 A CN202011272048 A CN 202011272048A CN 112555039 A CN112555039 A CN 112555039A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/14—Introducing closed-loop corrections
- F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
- F02D41/1444—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases
- F02D41/1459—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being a hydrocarbon content or concentration
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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
- F02D29/00—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto
- F02D29/02—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto peculiar to engines driving vehicles; peculiar to engines driving variable pitch propellers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/04—Engine intake system parameters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/10—Parameters related to the engine output, e.g. engine torque or engine speed
- F02D2200/101—Engine speed
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/50—Input parameters for engine control said parameters being related to the vehicle or its components
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/50—Input parameters for engine control said parameters being related to the vehicle or its components
- F02D2200/501—Vehicle speed
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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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- 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)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
Abstract
The embodiment of the application provides an engine control method and system based on smoke intensity working condition identification, which can be applied to all finished automobiles matched with DPF engines and firstly detect the gear shifting operation of the automobiles; when the gear shifting operation is detected, further detecting the smoke intensity peak working condition; after the smoke intensity peak working condition is detected, correcting the excess air coefficient according to the smoke intensity limiting MAP graph to obtain a smoke intensity limiting corrected MAP graph; and correcting the MAP according to the smoke limit to control the engine. This application is through discerning the big operating mode of smoke intensity for the peak value smoke intensity of the former machine of control, and then solved DPF carbon loading capacity and increased very fast problem, shortened DPF's carbon deposit mileage, reduced user use cost.
Description
Technical Field
The application belongs to the technical field of image classification, and particularly relates to an engine control method and system based on smoke intensity working condition identification.
Background
For the six diesel vehicles in China, a Diesel Particulate Filter (DPF) (diesel Particulate filter) is a standard device for engine aftertreatment, and smoke emission of an original engine is a core index for determining the regeneration mileage of the DPF. When the whole vehicle road runs, different driving habits and driving road conditions of different personnel are different, the driving conditions of the whole vehicle are determined to be different, peak smoke intensity generated by an original engine can be caused, the carbon loading capacity of the DPF can be rapidly increased due to the accumulation of the smoke intensity, so that the carbon deposition mileage of the DPF is shortened, and the use cost of a user is increased.
The existing control method inquires a smoke intensity limiting MAP through the rotating speed and the fuel injection quantity, and limits the fuel injection quantity through the excess air coefficient, so that the smoke intensity is controlled, and the problem that the carbon carrying capacity of the DPF is increased quickly is solved. However, the working condition with large smoke intensity cannot be identified and distinguished only by one smoke intensity limiting MAP, and the smoke intensity of the original machine is reduced by controlling the excess air coefficient by the whole smoke intensity limiting MAP, so that the power performance is seriously influenced, and the general feedback power of a user is insufficient.
Therefore, a method for identifying the working condition with large smoke intensity and further performing peak smoke intensity limitation in a targeted manner is needed.
Disclosure of Invention
The invention provides an engine control method and system based on smoke intensity working condition identification, and aims to solve the problems that the existing control method cannot identify and distinguish the working condition with high smoke intensity, and only limits the fuel injection quantity through the excessive air coefficient of smoke intensity limiting MAP, so that the effect is poor and the engine power is insufficient.
According to a first aspect of the embodiments of the present application, there is provided an engine control method based on smoke intensity condition identification, specifically including the following steps:
detecting a shift operation of a vehicle;
when the gear shifting operation is detected, further detecting the smoke intensity peak working condition;
after the smoke intensity peak working condition is detected, correcting the excess air coefficient according to the smoke intensity limiting MAP graph to obtain a smoke intensity limiting corrected MAP graph;
and correcting the MAP according to the smoke limit to control the engine.
In some embodiments of the present application, detecting a shift operation of a vehicle specifically includes:
when the clutch signal is detected and the oil amount of the accelerator signal is reduced, the gear shifting operation is determined.
In some embodiments of the present application, detecting a shift operation of a vehicle specifically includes:
when a change in the gear signal is detected, a shift operation is determined.
In some embodiments of the present application, the detecting the smoke intensity peak condition specifically includes detecting an accelerator signal, an engine speed signal, and a vehicle speed signal, and when the accelerator signal is increased and there is a nonlinear relationship between the engine speed signal and the vehicle speed signal, the smoke intensity peak condition is determined.
In some embodiments of the present application, the detecting the smoke peak condition specifically includes detecting a clutch signal, an accelerator signal, an engine speed signal, and a vehicle speed signal, and when the clutch signal and the accelerator signal exist simultaneously, and the accelerator signal increases, and there is a nonlinear relationship between the engine speed signal and the vehicle speed signal, it is determined that the smoke peak condition exists.
In some embodiments of the present application, the modifying the excess air factor according to the smoke limit MAP specifically includes:
and on the basis of the excess air coefficient of the output smoke limit MAP, increasing the correction amount of the excess air coefficient to obtain an excess air coefficient correction value.
According to a second aspect of the embodiments of the present application, there is provided an engine control system based on smoke intensity condition recognition, specifically including:
the gear shifting detection module: for detecting a shift operation of the vehicle;
smoke intensity peak condition detection module: the control method comprises the steps of detecting the smoke intensity peak working condition when the gear shifting operation is detected;
smoke limit correction module: after the smoke intensity peak working condition is detected, correcting the excess air coefficient according to the smoke intensity limiting MAP graph to obtain a smoke intensity limiting corrected MAP graph;
an engine control module: for engine control by correcting the MAP in accordance with the smoke limit.
In some embodiments of the present application, the smoke peak operating condition detection module is specifically configured to, when a shift operation is detected, further detect an accelerator signal, an engine speed signal, and a vehicle speed signal, and when the accelerator signal exists and a nonlinear relationship exists between the engine speed signal and the vehicle speed signal, determine that the smoke peak operating condition exists.
According to a third aspect of the embodiments of the present application, there is provided an engine control apparatus based on smoke regime recognition, comprising:
a memory: for storing executable instructions; and
and the processor is connected with the memory to execute the executable instructions so as to complete the engine control method based on the smoke degree condition identification.
According to a fourth aspect of embodiments of the present application, there is provided a computer-readable storage medium having a computer program stored thereon; a computer program is executed by a processor to implement an engine control method based on smoke condition identification.
The engine control method and the engine control system based on smoke intensity working condition identification in the embodiment of the application can be applied to all finished automobiles matched with DPF engines, and firstly, gear shifting operation of the automobiles is detected; when the gear shifting operation is detected, further detecting the smoke intensity peak working condition; after the smoke intensity peak working condition is detected, correcting the excess air coefficient according to the smoke intensity limiting MAP graph to obtain a smoke intensity limiting corrected MAP graph; and correcting the MAP according to the smoke limit to control the engine. This application is through discerning the big operating mode of smoke intensity for the peak value smoke intensity of the former machine of control, and then solved DPF carbon loading capacity and increased very fast problem, shortened DPF's carbon deposit mileage, reduced user use cost.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
FIG. 1 is a graph illustrating various engine signal variations according to the smoke peak conditions of the present application;
FIG. 2 is a schematic diagram illustrating steps of an engine control method based on smoke regime identification according to an embodiment of the present application;
FIG. 3 is a schematic diagram illustrating an engine control system based on smoke condition identification according to an embodiment of the present application;
a schematic structural diagram of the engine control device based on smoke condition identification according to the embodiment of the application is shown in FIG. 4.
Detailed Description
In the process of realizing the application, the inventor finds that when the whole vehicle runs on a road, the driving habits and the driving road conditions of different personnel are different, and determines that the driving conditions of the whole vehicle are different, so that the peak smoke intensity of an original engine can be generated, and the carbon loading capacity of the DPF can be rapidly increased due to the accumulation of the smoke intensity, thereby shortening the carbon deposition mileage of the DPF and increasing the use cost of a user.
A plot of various engine signal variations according to the smoke peak conditions of the present application is shown in fig. 1. Wherein, the curve A is the opening degree of the accelerator, and the unit is%; curve B is EGR opening in units; curve C is engine speed in rpm; curve E is the instantaneous fuel injection quantity in mg/hub; the curve D attached to the curve E is the smoke limit oil amount, and the unit is mg/hub; curve F is the intake air per cycle in mg/hub.
On the other hand, through practical tests, the inventor finds out the reason of the generation of the original engine peak smoke degree, as shown in fig. 1, when the accelerator is released during the gear shifting but the clutch is not completely released, the accelerator opening degree begins to increase to cause half-clutch and increase the engine speed, but at the moment, the air intake amount per cycle is continuously reduced, so that the peak smoke degree condition is generated.
Based on the smoke intensity working condition identification-based engine control method and system, the high-risk working condition which can generate the peak smoke intensity is judged and identified by detecting the clutch signal, the engine rotating speed signal, the vehicle speed signal and the air inflow signal per cycle, and the fuel injection amount of the engine is controlled by smoke intensity limiting correction, so that the generation of the peak smoke intensity is controlled, and the problem that the carbon carrying amount of the DPF is increased quickly is solved.
Specifically, the engine control method and system based on smoke intensity working condition identification can be applied to all whole vehicles matched with DPF engines, and firstly, gear shifting operation of the vehicles is detected; when the gear shifting operation is detected, further detecting the smoke intensity peak working condition; after the smoke intensity peak working condition is detected, correcting the excess air coefficient according to the smoke intensity limiting MAP graph to obtain a smoke intensity limiting corrected MAP graph; and correcting the MAP according to the smoke limit to control the engine. This application is through discerning the big operating mode of smoke intensity for the peak value smoke intensity of the former machine of control, and then solved DPF carbon loading capacity and increased very fast problem, shortened DPF's carbon deposit mileage, reduced user use cost.
In order to make the technical solutions and advantages of the embodiments of the present application more apparent, the following further detailed description of the exemplary embodiments of the present application with reference to the accompanying drawings makes it clear that the described embodiments are only a part of the embodiments of the present application, and are not exhaustive of all embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
Example 1
Fig. 2 is a schematic diagram illustrating steps of an incremental learning method based on a classification layer similarity constraint according to an embodiment of the present application.
As shown in fig. 2, the engine control method based on smoke intensity condition identification according to the embodiment of the present application specifically includes the following steps:
s101: a shift operation of the vehicle is detected.
Specifically, when the gear shifting operation of the whole vehicle is detected, the judgment is carried out through a clutch signal, an accelerator signal and/or a gear signal.
And detecting a gear signal, and determining the gear shifting operation when the gear signal is detected to be changed.
Since the gear signal generally has delay, the clutch signal and the accelerator signal can be used as main judgment conditions.
In the embodiment of the application, when a clutch signal is detected, namely the clutch is stepped on, and the clutch signal is set to be 1, and the oil quantity of an accelerator signal is reduced at the same time, namely the accelerator is released, the gear shifting operation is determined to exist.
S102: when the gear shifting operation is detected, further detecting the smoke intensity peak working condition;
after it is detected that the shift operation is generated through S101, it is necessary to detect whether the smoke intensity peak condition occurs. The application judges through an engine rotating speed signal, a vehicle speed signal, an accelerator signal and a clutch signal.
On one hand, when the clutch signal is determined to exist, namely the clutch signal is not released yet and is not set to 0, the smoke intensity peak working condition is detected, and the smoke intensity peak working condition specifically comprises the detection of an accelerator signal, an engine rotating speed signal and a vehicle speed signal. When the existence of an accelerator signal is detected, namely the opening of the accelerator is larger than 0%, the accelerator signal is increased, the rotating speed of the engine is increased, and the working condition of the smoke intensity peak value is judged to appear when the rotating speed of the engine and the vehicle speed are not in a linear relation. That is, when the throttle signal exists and the engine speed signal and the vehicle speed signal have a nonlinear relationship, the smoke intensity peak condition is determined.
On the other hand, when determining whether the clutch signal exists, detecting the smoke intensity peak working condition, simultaneously detecting the clutch signal, the accelerator signal, the engine rotating speed signal and the vehicle speed signal, and when the clutch signal and the accelerator signal exist simultaneously, the accelerator signal is increased, and the engine rotating speed signal and the vehicle speed signal have a nonlinear relation, determining the smoke intensity peak working condition.
S103: after the smoke intensity peak working condition is detected, correcting the excess air coefficient according to the smoke intensity limiting MAP graph to obtain a smoke intensity limiting corrected MAP graph;
after the smoke intensity peak working condition is detected in S102, correction control is carried out on the basic smoke intensity limiting MAP, and on the basis of the excess air coefficient of the output smoke intensity limiting MAP, the correction quantity of the excess air coefficient is increased to obtain an excess air coefficient correction value, so that the smoke intensity limiting oil quantity is increased, the purpose of reducing the oil injection quantity is achieved, and the peak smoke intensity is reduced.
S104: and correcting the MAP according to the smoke limit to control the engine.
The engine control method based on smoke intensity working condition identification in the embodiment of the application can be applied to all finished automobiles matched with DPF engines, and firstly, gear shifting operation of the automobiles is detected; when the gear shifting operation is detected, further detecting the smoke intensity peak working condition; after the smoke intensity peak working condition is detected, correcting the excess air coefficient according to the smoke intensity limiting MAP graph to obtain a smoke intensity limiting corrected MAP graph; and correcting the MAP according to the smoke limit to control the engine. This application is through discerning the big operating mode of smoke intensity for the peak value smoke intensity of the former machine of control, and then solved DPF carbon loading capacity and increased very fast problem, shortened DPF's carbon deposit mileage, reduced user use cost.
Specifically, this application judges the operating mode that discernment produced the smoke intensity peak value through detecting gear, engine speed, speed signal and clutch signal, when detecting that the throttle is unclamped, the clutch disengages, judge when the gear changes and shift gears the operation, when detecting accelerator pedal increase, and when engine speed increases and the speed of a motor increases disproportionately, judge the operating mode that the peak value smoke intensity is big, the smoke intensity restriction can walk the correction control value this moment, increase the excessive air coefficient of smoke intensity restriction, reduce the fuel injection quantity.
The working condition that the peak smoke intensity is large is accurately identified through engine parameters, the correction of the excess air coefficient in the smoke intensity limiting MAP is carried out, the generation of the peak smoke intensity is reduced, and the generation of the peak smoke intensity is avoided.
Example 2
For details not disclosed in the engine control system based on smoke level condition recognition of this embodiment, please refer to specific implementation contents of the engine control method based on smoke level condition recognition in other embodiments.
A schematic structural diagram of an engine control system based on smoke regime recognition according to an embodiment of the application is shown in FIG. 3.
As shown in fig. 3, the engine control system based on smoke intensity condition identification according to the embodiment of the present application specifically includes a shift detection module 10, a smoke intensity peak condition detection module 20, a smoke intensity limit correction module 30, and an engine control module 40.
The shift detection module 10: for detecting a gear shift operation of the vehicle.
Specifically, when the gear shifting operation of the whole vehicle is detected, the judgment is carried out through a clutch signal, an accelerator signal and/or a gear signal.
And detecting a gear signal, and determining the gear shifting operation when the gear signal is detected to be changed.
Since the gear signal generally has delay, the clutch signal and the accelerator signal can be used as main judgment conditions.
In the embodiment of the application, when a clutch signal is detected, namely the clutch is stepped on, and the clutch signal is set to be 1, and the oil quantity of an accelerator signal is reduced at the same time, namely the accelerator is released, the gear shifting operation is determined to exist.
Smoke intensity peak condition detection module 20: and the controller is used for further detecting the smoke intensity peak working condition when the gear shifting operation is detected.
After the gear shifting operation is detected to be generated, whether the smoke intensity peak working condition occurs needs to be detected. The application judges through an engine rotating speed signal, a vehicle speed signal, an accelerator signal and a clutch signal.
The smoke peak condition detection module 20 is specifically configured to further detect an accelerator signal, an engine speed signal, and a vehicle speed signal when a shift operation is detected, and determine that the smoke peak condition exists when the accelerator signal increases and the engine speed signal and the vehicle speed signal have a non-linear relationship.
Specifically, on one hand, when the clutch signal is determined to exist, namely the clutch signal is not released yet and is not set to 0, the smoke intensity peak working condition is detected, and the smoke intensity peak working condition specifically comprises the detection of an accelerator signal, an engine speed signal and a vehicle speed signal. When the existence of an accelerator signal is detected, namely the opening of the accelerator is larger than 0%, the accelerator signal is increased, the rotating speed of the engine is increased, and the working condition of the smoke intensity peak value is judged to appear when the rotating speed of the engine and the vehicle speed are not in a linear relation. That is, when the throttle signal exists and the engine speed signal and the vehicle speed signal have a nonlinear relationship, the smoke intensity peak condition is determined.
On the other hand, when determining whether the clutch signal exists, detecting the smoke intensity peak working condition, simultaneously detecting the clutch signal, the accelerator signal, the engine rotating speed signal and the vehicle speed signal, and when the clutch signal and the accelerator signal exist simultaneously, the accelerator signal is increased, and the engine rotating speed signal and the vehicle speed signal have a nonlinear relation, determining the smoke intensity peak working condition.
Smoke limit correction module 30: and after the smoke intensity peak working condition is detected, correcting the excess air coefficient according to the smoke intensity limiting MAP graph to obtain a smoke intensity limiting corrected MAP graph.
After the smoke intensity peak working condition detection module 20 detects the smoke intensity peak working condition, the basic smoke intensity limiting MAP is corrected and controlled, and on the basis of the excess air coefficient of the output smoke intensity limiting MAP, the correction quantity of the excess air coefficient is increased to obtain the excess air coefficient correction value, so that the smoke intensity limiting oil quantity is increased, the purpose of reducing the oil injection quantity is achieved, and the peak smoke intensity is reduced.
The engine control module 40: for engine control by correcting the MAP in accordance with the smoke limit.
After the smoke limit correction MAP is obtained through the identification process of the whole smoke peak working condition, the engine is controlled through the engine control module 40.
The engine control system based on smoke intensity working condition identification in the embodiment of the application can be applied to all finished automobiles matched with DPF engines, and firstly, the gear shifting detection module 10 detects the gear shifting operation of the automobiles; the smoke peak condition detection module 20 further detects a smoke peak condition when a gear shifting operation is detected; after detecting the smoke limit peak working condition, the smoke limit correction module 30 corrects the excess air coefficient according to the smoke limit MAP to obtain a smoke limit corrected MAP; the engine control module 40 performs engine control based on the smoke limit modified MAP. This application is through discerning the big operating mode of smoke intensity for the peak value smoke intensity of the former machine of control, and then solved DPF carbon loading capacity and increased very fast problem, shortened DPF's carbon deposit mileage, reduced user use cost.
Specifically, this application judges the operating mode that discernment produced the smoke intensity peak value through detecting gear, engine speed, speed signal and clutch signal, when detecting that the throttle is unclamped, the clutch disengages, judge when the gear changes and shift gears the operation, when detecting accelerator pedal increase, and when engine speed increases and the speed of a motor increases disproportionately, judge the operating mode that the peak value smoke intensity is big, the smoke intensity restriction can walk the correction control value this moment, increase the excessive air coefficient of smoke intensity restriction, reduce the fuel injection quantity.
The working condition that the peak smoke intensity is large is accurately identified through engine parameters, the correction of the excess air coefficient in the smoke intensity limiting MAP is carried out, the generation of the peak smoke intensity is reduced, and the generation of the peak smoke intensity is avoided.
Example 3
For details not disclosed in the engine control apparatus based on smoke level condition identification of this embodiment, please refer to specific implementation contents of the engine control method or system based on smoke level condition identification in other embodiments.
A schematic structural diagram of an engine control apparatus 400 based on smoke regime identification according to an embodiment of the present application is shown in fig. 4.
As shown in fig. 4, the engine control apparatus 400 includes:
the memory 402: for storing executable instructions; and
a processor 401 is coupled to the memory 402 to execute executable instructions to perform the motion vector prediction method.
Those skilled in the art will appreciate that the schematic diagram of fig. 4 is merely an example of the engine control apparatus 400 and does not constitute a limitation of the engine control apparatus 400 and may include more or less components than those shown, or combine certain components, or different components, for example, the engine control apparatus 400 may further include input-output devices, network access devices, buses, etc.
The Processor 401 (CPU) may be other general-purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field-Programmable Gate Array (FPGA) or other Programmable logic device, a discrete Gate or transistor logic device, a discrete hardware component, or the like. The general purpose processor may be a microprocessor or the processor 401 may be any conventional processor or the like, and the processor 401 is a control center of the engine control apparatus 400 and connects various parts of the entire engine control apparatus 400 by various interfaces and lines.
The memory 402 may be used to store computer readable instructions and the processor 401 may implement the various functions of the engine control apparatus 400 by operating or executing computer readable instructions or modules stored in the memory 402 and by invoking data stored in the memory 402. The memory 402 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data created from use of the computer device 30 of the engine control device 400, and the like. In addition, the Memory 402 may include a hard disk, a Memory, a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash Memory Card (Flash Card), at least one disk storage device, a Flash Memory device, a Read-Only Memory (ROM), a Random Access Memory (RAM), or other non-volatile/volatile storage devices.
The modules integrated by the engine control apparatus 400, if implemented in the form of software functional modules and sold or used as separate products, may be stored in a computer-readable storage medium. Based on such understanding, all or part of the flow of the method according to the embodiments of the present invention may also be implemented by hardware related to computer readable instructions, which may be stored in a computer readable storage medium, and when the computer readable instructions are executed by a processor, the steps of the method embodiments may be implemented.
Example 4
The present embodiment provides a computer-readable storage medium having stored thereon a computer program; the computer program is executed by the processor to implement the engine control method based on smoke regime identification in other embodiments.
The engine control equipment and the computer storage medium based on smoke intensity working condition identification in the embodiment of the application can be applied to all finished vehicles matched with DPF engines, and firstly, the gear shifting operation of the vehicles is detected; when the gear shifting operation is detected, further detecting the smoke intensity peak working condition; after the smoke intensity peak working condition is detected, correcting the excess air coefficient according to the smoke intensity limiting MAP graph to obtain a smoke intensity limiting corrected MAP graph; and correcting the MAP according to the smoke limit to control the engine. This application is through discerning the big operating mode of smoke intensity for the peak value smoke intensity of the former machine of control, and then solved DPF carbon loading capacity and increased very fast problem, shortened DPF's carbon deposit mileage, reduced user use cost.
Specifically, this application judges the operating mode that discernment produced the smoke intensity peak value through detecting gear, engine speed, speed signal and clutch signal, when detecting that the throttle is unclamped, the clutch disengages, judge when the gear changes and shift gears the operation, when detecting accelerator pedal increase, and when engine speed increases and the speed of a motor increases disproportionately, judge the operating mode that the peak value smoke intensity is big, the smoke intensity restriction can walk the correction control value this moment, increase the excessive air coefficient of smoke intensity restriction, reduce the fuel injection quantity.
The working condition that the peak smoke intensity is large is accurately identified through engine parameters, the correction of the excess air coefficient in the smoke intensity limiting MAP is carried out, the generation of the peak smoke intensity is reduced, and the generation of the peak smoke intensity is avoided.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present invention. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context.
While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (10)
1. An engine control method based on smoke intensity working condition identification specifically comprises the following steps:
detecting a shift operation of a vehicle;
when the gear shifting operation is detected, further detecting a smoke intensity peak working condition;
after the smoke intensity peak working condition is detected, correcting an excess air coefficient according to a smoke intensity limiting MAP graph to obtain a smoke intensity limiting and correcting MAP graph;
and carrying out engine control according to the smoke limit correction MAP.
2. The engine control method based on smoke intensity working condition identification as claimed in claim 1, wherein the step of detecting the gear shifting operation of the vehicle specifically comprises the following steps:
when the clutch signal is detected and the oil amount of the accelerator signal is reduced, the gear shifting operation is determined.
3. The engine control method based on smoke intensity working condition identification as claimed in claim 1, wherein the step of detecting the gear shifting operation of the vehicle specifically comprises the following steps:
when a change in the gear signal is detected, a shift operation is determined.
4. The engine control method based on smoke intensity working condition identification as claimed in claim 2, wherein the smoke intensity peak working condition detection specifically comprises detecting an accelerator signal, an engine speed signal and a vehicle speed signal, and when the accelerator signal is increased and the engine speed signal and the vehicle speed signal have a nonlinear relation, the smoke intensity peak working condition is determined.
5. The engine control method based on smoke intensity working condition identification as claimed in claim 3, wherein the smoke intensity peak working condition detection specifically comprises detecting a clutch signal, an accelerator signal, an engine speed signal and a vehicle speed signal, and when the clutch signal and the accelerator signal exist simultaneously, the accelerator signal is increased, and the engine speed signal and the vehicle speed signal have a nonlinear relationship, the smoke intensity peak working condition is determined.
6. The engine control method based on smoke condition identification as claimed in claim 1, wherein said modifying excess air factor according to smoke limit MAP specifically comprises:
and on the basis of the excess air coefficient of the output smoke limit MAP, increasing the correction amount of the excess air coefficient to obtain an excess air coefficient correction value.
7. The utility model provides an engine control system based on smoke intensity operating mode discernment which characterized in that specifically includes:
the gear shifting detection module: for detecting a shift operation of the vehicle;
smoke intensity peak condition detection module: the gear shifting control device is used for further detecting the smoke intensity peak working condition when the gear shifting operation is detected;
smoke limit correction module: after the smoke intensity peak working condition is detected, correcting an excess air coefficient according to a smoke intensity limiting MAP graph to obtain a smoke intensity limiting corrected MAP graph;
an engine control module: and the engine control is carried out according to the smoke limit correction MAP.
8. The engine control system based on smoke intensity working condition recognition of claim 7, wherein the smoke intensity peak working condition detection module is specifically configured to further detect an accelerator signal, an engine speed signal and a vehicle speed signal when the gear shifting operation is detected, and determine the smoke intensity peak working condition when the accelerator signal exists and the engine speed signal and the vehicle speed signal have a non-linear relationship.
9. An engine control apparatus based on smoke intensity operating condition recognition, comprising:
a memory: for storing executable instructions; and
a processor coupled to the memory for executing the executable instructions to perform the engine control method based on smoke regime identification of any one of claims 1-6.
10. A computer-readable storage medium, having stored thereon a computer program; a computer program is executed by a processor to implement the engine control method based on smoke regime identification as claimed in any one of claims 1 to 6.
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