CN109973230A - Internal combustion engine start method, apparatus, device for controlling engine and storage medium - Google Patents
Internal combustion engine start method, apparatus, device for controlling engine and storage medium Download PDFInfo
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- CN109973230A CN109973230A CN201910327221.2A CN201910327221A CN109973230A CN 109973230 A CN109973230 A CN 109973230A CN 201910327221 A CN201910327221 A CN 201910327221A CN 109973230 A CN109973230 A CN 109973230A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/04—Introducing corrections for particular operating conditions
- F02D41/06—Introducing corrections for particular operating conditions for engine starting or warming up
- F02D41/062—Introducing corrections for particular operating conditions for engine starting or warming up for starting
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/30—Controlling fuel injection
-
- 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
- F02D2200/0406—Intake manifold pressure
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
This application involves a kind of internal combustion engine start method, apparatus, the device for controlling engine and storage medium of internal combustion engine.The described method includes: after detecting ignition signal, if the fuel oil in cylinder reaches overrich condition, according to the first attenuation coefficient decaying fuel injection amount；Judge whether air inlet intraductal atmospheric pressure is stable according to observed pressure parameter and theoretical pressure parameter；Wherein, the theoretical pressure parameter is determined according to multiple observed pressure parameters；If the air inlet intraductal atmospheric pressure is unstable, fuel oil is sprayed according to target flow；The target flow is the fuel flow determined according to the theoretical pressure parameter and preset fuel oil map.The startup structure of internal combustion engine can be made to be simplified using this method, effectively reduce the start-up cost of internal combustion engine.
Description
Technical field
This application involves dynamic power machine control technology fields, more particularly to a kind of internal combustion engine start method, apparatus, internal combustion
The device for controlling engine and storage medium of machine.
Background technique
Internal combustion engine, to guarantee its starting performance, will usually increase the fuel delivery of engine when cold state starts.This mould
Formula common name is known as starting increment compensation.During realizing heat engine with the continuous operation of engine, control unit of engine
(ECU), by monitoring engine temperature, zero is constantly decayed to starting increment, terminates starting increasing mode, still, in engine
Flame-out, a large amount of liquid fuel oils of injection occur in the case of still not hot machine, easily remain on air flue, in casing wall.It is deposited in non-volatile Residual oil
In case, be again started up engine, will lead to cylinder fuel overrich, difficulty in starting, or even occur drowned spark plug without
The case where method starts.Traditional scheme remembers the dwell time between stopping working and restarting often through ECU, estimates Residual oil
Degree of volatility (resid amount) carries out reduction appropriate to increment compensation when restarting.Above-mentioned traditional scheme realizes that internal combustion engine opens
Dynamic premise is that ECU must can just carry out accordingly judgement and memory in energized state and equipped with corresponding memory storage, is reached
To the purpose of internal combustion engine where starting, make to start the at high cost of internal combustion engine in this way, and fuel component is different, air pressure is different,
Under the complex situations such as environment temperature difference, due to the deviation on estimation precision, cause starting performance is bad to happen.
Summary of the invention
Based on this, it is necessary in view of the above technical problems, provide a kind of start-up cost that can reduce internal combustion engine and simultaneously
Determine that the mode of the amount of injection improves the hair of the internal combustion engine start method, apparatus of starting performance, internal combustion engine according to the actual operation
Motivation controls equipment and storage medium.
A kind of internal combustion engine start method, which comprises
After detecting ignition signal, if the fuel oil in cylinder reaches overrich condition, decays according to the first attenuation coefficient and fire
Oil spurts amount；
Judge whether air inlet intraductal atmospheric pressure is stable according to observed pressure parameter and theoretical pressure parameter；
If air inlet intraductal atmospheric pressure is unstable, fuel oil is sprayed according to target flow；Target flow is to join according to theoretical pressure
The fuel flow that several and preset fuel oil map determines.
It is above-mentioned in one of the embodiments, that air inlet intraductal atmospheric pressure is judged according to observed pressure parameter and theoretical pressure parameter
Whether stable include:
If the difference of observed pressure parameter and theoretical pressure parameter in preset difference range, does not determine intratracheal air pressure
It is unstable.
The determination process of above-mentioned theory pressure parameter may include: in one of the embodiments,
The peak value in multiple observed pressure parameters is rejected, theoretical pressure is determined according to the observed pressure parameter after rejecting peak value
Parameter.
The determination process of above-mentioned theory pressure parameter can also include: in one of the embodiments,
The disposal of gentle filter is carried out to current observed pressure parameter and previous observed pressure parameter, obtains theoretical pressure
Force parameter.
In one of the embodiments, after detecting ignition signal, the above method further include:
According to the second attenuation coefficient continuous decrement fuel injection amount, when fuel injection amount decays to setting injection value, if
Engine speed is lower than the first rotary speed threshold value, then determines that the fuel oil in cylinder reaches overrich condition.
As one embodiment, before according to the second attenuation coefficient continuous decrement fuel injection amount, above scheme is also wrapped
It includes:
The corresponding initial fuel injection magnitude of Current Temperatures is read from preset injection scale, is sprayed according to initial fuel injection magnitude
Fuel oil.
In one of the embodiments, after detecting ignition signal, the above method further include:
Detection engine speed reaches the revolving speed decrease speed after revolving speed peak value, if revolving speed decrease speed is greater than the second revolving speed
Threshold value then determines that the fuel oil in cylinder reaches overrich condition.
A kind of startor of internal combustion engine, described device include:
Attenuation module, if the fuel oil in cylinder reaches overrich condition, declines after detecting ignition signal according to first
Subtract coefficient attenuation fuel injection amount；
Judgment module, for judging whether air inlet intraductal atmospheric pressure is stable according to observed pressure parameter and theoretical pressure parameter；
Injection control module sprays fuel oil according to target flow if unstable for air inlet intraductal atmospheric pressure；Target flow
For the fuel flow determined according to theoretical pressure parameter and preset fuel oil map.
A kind of device for controlling engine of internal combustion engine, including memory, processor and storage on a memory and can located
The computer program run on reason device, the processor perform the steps of when executing the computer program
After detecting ignition signal, if the fuel oil in cylinder reaches overrich condition, decays according to the first attenuation coefficient and fire
Oil spurts amount；
Judge whether air inlet intraductal atmospheric pressure is stable according to observed pressure parameter and theoretical pressure parameter；
If air inlet intraductal atmospheric pressure is unstable, fuel oil is sprayed according to target flow；Target flow is to join according to theoretical pressure
The fuel flow that several and preset fuel oil map determines.
A kind of computer readable storage medium, is stored thereon with computer program, and the computer program is held by processor
It is performed the steps of when row
After detecting ignition signal, if the fuel oil in cylinder reaches overrich condition, decays according to the first attenuation coefficient and fire
Oil spurts amount；
Judge whether air inlet intraductal atmospheric pressure is stable according to observed pressure parameter and theoretical pressure parameter；
If air inlet intraductal atmospheric pressure is unstable, fuel oil is sprayed according to target flow；Target flow is to join according to theoretical pressure
The fuel flow that several and preset fuel oil map determines.
The device for controlling engine and storage medium of above-mentioned internal combustion engine start method, apparatus, internal combustion engine are detecting igniting
After signal, when the fuel oil in cylinder reaches overrich condition, according to the first attenuation coefficient decaying fuel injection amount, and in air inlet pipe
When air pressure is unstable, fuel oil is sprayed according to the corresponding target flow of theoretical pressure parameter, so that internal combustion engine smoothly starts, Ke Yijian
The start-up course for changing internal combustion engine is correspondingly simplified the startup structure of internal combustion engine, effectively reduce the starting of internal combustion engine at
This.
Detailed description of the invention
Fig. 1 is the flow diagram of internal combustion engine start method in one embodiment；
Fig. 2 is the disposal of gentle filter schematic diagram of measured curve in one embodiment；
Fig. 3 is the structural block diagram of startor of internal combustion engine in one embodiment；
Fig. 4 is the internal structure chart of the device for controlling engine of internal combustion engine in one embodiment.
Specific embodiment
It is with reference to the accompanying drawings and embodiments, right in order to which the objects, technical solutions and advantages of the application are more clearly understood
The application is further elaborated.It should be appreciated that specific embodiment described herein is only used to explain the application, not
For limiting the application.
Referenced herein " embodiment " is it is meant that a particular feature, structure, or characteristic described can wrap in conjunction with the embodiments
It is contained at least one embodiment of the application.Each position in the description occur the phrase might not each mean it is identical
Embodiment, nor the independent or alternative embodiment with other embodiments mutual exclusion.Those skilled in the art explicitly and
Implicitly understand, embodiment described herein can be combined with other embodiments.
Internal combustion engine start method provided by the present application can be applied to the control unit of engine (ECU) of internal combustion engine.It is above-mentioned
Control unit of engine is after detecting ignition signal, if the fuel oil recognized in cylinder reaches overrich condition, according to first
Attenuation coefficient decaying fuel injection amount；Judge whether air inlet intraductal atmospheric pressure is steady further according to observed pressure parameter and theoretical pressure parameter
It is fixed；If air inlet intraductal atmospheric pressure is unstable, according to the target flow determined according to theoretical pressure parameter and preset fuel oil map
Fuel oil is sprayed, so that internal combustion engine is realized starting, to simplify the startup structure of internal combustion engine, reduces the start-up cost of internal combustion engine.
In one embodiment, as shown in Figure 1, providing a kind of internal combustion engine start method, it is applied to internal combustion in this way
It is illustrated for the ECU of machine, comprising the following steps:
S210 after detecting ignition signal, if the fuel oil in cylinder reaches overrich condition, declines according to the first attenuation coefficient
Subtract fuel injection amount.
Whether the internal combustion engine where ECU detects it lights a fire, and after detecting the ignition signal of internal combustion engine, reads engine and turns
The start-up parameters such as speed, according to above-mentioned start-up parameter judge cylinder of internal-combustion engine fuel whether overrich, if cylinder of internal-combustion engine fuel
Overrich, i.e. fuel oil in cylinder reach overrich condition, then largely decay fuel injection amount according to the first attenuation coefficient, to clear away gas
Extra remaining fuel oil in cylinder.
Above-mentioned first attenuation coefficient can be arranged according to the configuration feature of engine in internal combustion engine, for example be set as 80% etc.
Fuel injection amount can be rapidly decayed to the 20% of former the amount of injection according to first attenuation coefficient at this time by biggish pad value.
After largely decaying fuel injection amount, extra Residual oil is constantly reduced in cylinder, and air-fuel ratio appropriate can make engine speed gradually
It increases, ECU can be according to mode changeover condition, by mode when starting after lighting a fire, conversion mode to after starting at this time.
Optionally, mode and mode after starting can determine according to engine speed when above-mentioned starting, in engine speed
Before reaching a certain rotary speed threshold value (such as the first rotary speed threshold value), mode when internal combustion engine is in starting reaches this turn in engine speed
Start-up course after fast threshold value is in mode after starting.
S230 judges whether air inlet intraductal atmospheric pressure is stable according to observed pressure parameter and theoretical pressure parameter；
Above-mentioned theory pressure parameter is that the admission pressure in air inlet pipe stablizes the laggard atmospheric pressure value that should intratracheally have, can
According to currently determining in the multiple observed pressure parameters intratracheally measured.After internal-combustion engine ignition, ECU can be at regular intervals
Primary endotracheal air pressure is read at interval, to obtain multiple observed pressure parameters.Since revolving speed is extremely low and air inlet intraductal atmospheric pressure pole
Unstability can not form stable admission pressure in air inlet pipe.Under this Operation Conditions, if ECU is according to read pressure
Force parameter calculates air inflow, calculates and execute fuel-injected words, the fuel oil sprayed will be more than engine combustion actually required
Oil spurts amount, it is likely that internal combustion engine is made to can not be successfully starting.
In one example, above-mentioned theory pressure parameter can be determined according to the preset value of observed pressure parameter and ECU, than
Such as it is determined as the average value of observed pressure parameter and preset value.Above-mentioned preset value can be obtained and preset in advance by testing
In ECU (for example being set as 50Kpa), start-up mode leading portion (mode when starting, i.e., after firing between starting when
Section, it can be understood as when environment temperature) because internal cylinder temperature is not up to normal operating temperature (internal cylinder temperature when starting
It is identical as ambient temperature), the pressure parameter that pressure sensor detects at this time is disorder, cannot be directly used to determine combustion
Oil spurts amount, but the pressure value that will test and the preset value are used to determine fuel injection amount after making smoothing processing；Work as starting
Afterwards, internal cylinder temperature reaches normal operating temperature, is transitioned by the value that smoothing computation is handled directly utilizes detection at this time
To pressure value determine fuel injection amount.It can be using the numerical value generation after smoothing processing when temperature is not up to operating temperature value
For actually detected value, and after temperature reaches operating temperature, can directly be sprayed using actually detected value (observed pressure parameter)
Penetrate control.
S250 sprays fuel oil according to target flow if air inlet intraductal atmospheric pressure is unstable；Target flow is according to theoretical pressure
The fuel flow that force parameter and preset fuel oil map determine.
Above-mentioned fuel oil map can recorde the corresponding fuel flow of each pressure parameter, and/or throttle opening etc.
Fuel Injection Control parameter.The corresponding fuel Injection Control ginseng of above-mentioned theory pressure parameter can be specifically searched in fuel oil map
Number, determines target flow according to above-mentioned fuel Injection Control parameter, sprays fuel oil according to target flow, makes the air pressure in air inlet pipe
Reach stable, smoothly to start internal combustion engine.
The acquisition process of above-mentioned fuel oil map may include: to carry out repeatedly starting experiment for corresponding internal combustion engine, inside
During combustion engine is smoothly started, the corresponding fuel flow of each pressure parameter, and/or solar term in air inlet pipe are detected
The fuel Injection Controls parameters such as door aperture generate fuel oil figure according to the corresponding fuel Injection Control parameter of each pressure parameter
Spectrum.Above-mentioned fuel oil map is prestored to ECU, so that ECU determines that theoretical pressure parameter is corresponding during controlling internal combustion engine start
Fuel flow.
In above-mentioned internal combustion engine start method, after detecting ignition signal, when the fuel oil in cylinder reaches overrich condition, press
It is corresponding according to theoretical pressure parameter according to the first attenuation coefficient decaying fuel injection amount, and when air inlet intraductal atmospheric pressure is unstable
Target flow sprays fuel oil and can simplify the start-up course of internal combustion engine so that internal combustion engine smoothly starts, and correspondingly, makes internal combustion engine
Startup structure be simplified, effectively reduce the start-up cost of internal combustion engine.
It is in one embodiment, above-mentioned to be pressed according to actual measurement in order to which the stability to air inlet intraductal atmospheric pressure is accurately detected
Force parameter and theoretical pressure parameter judge whether air inlet intraductal atmospheric pressure is stable
If the difference of observed pressure parameter and theoretical pressure parameter in preset difference range, does not determine intratracheal air pressure
It is unstable.
Above-mentioned difference range can be set according to the configuration feature of internal combustion engine, for example be set as -0.1Pa (Pascal) extremely
This range of 0.1Pa.If the difference of observed pressure parameter and theoretical pressure parameter in preset difference range, i.e., theoretical pressure is joined
Number is very close with measuring pressure parameter, built standing and the associated good relationship with balance of revolving speed in air inlet pipe at this time,
It can determine that the admission pressure in air inlet pipe is shakedown (intratracheal stable gas pressure), can start in a conventional manner corresponding
Internal combustion engine.If the difference of observed pressure parameter and theoretical pressure parameter in preset difference range, does not show intratracheal air pressure
Stable state has not been reached yet, if starting internal combustion engine in a conventional manner at this time, will be unable to start internal combustion engine smoothly, needs
Target flow is redefined according to theoretical pressure parameter, fuel oil be sprayed according to target flow, smoothly to start internal combustion engine.
In one embodiment, the determination process of above-mentioned theory pressure parameter may include:
The peak value in multiple observed pressure parameters is rejected, theoretical pressure is determined according to the observed pressure parameter after rejecting peak value
Parameter.
It specifically, can be according to each actual measurement after rejecting peak value after rejecting the peak value in multiple observed pressure parameters
The average value of pressure parameter determines theoretical pressure parameter, is interfered, is mentioned caused by noise in pressure parameter measurement process with reduction
The accuracy of theoretical pressure parameter determined by height.
As one embodiment, refering to what is shown in Fig. 2, the corresponding measured curve of multiple observed pressure parameters can be described (such as
It is shown in solid in Fig. 2), the disposal of gentle filter is carried out to above-mentioned measured curve, to remove the peak value in measured curve, is obtained smooth
Curve (as shown in phantom in Figure 2) determines corresponding theoretical pressure parameter according to above-mentioned smoothed curve.
In another embodiment, the determination process of above-mentioned theory pressure parameter can also include:
The disposal of gentle filter is carried out to current observed pressure parameter and previous observed pressure parameter, obtains theoretical pressure
Force parameter.
Specifically, current observed pressure parameter and previous observed pressure parameter can be substituted into smothing filtering respectively
Formula, to calculate corresponding theoretical pressure parameter.Above-mentioned smothing filtering formula includes:
PM'=PM1+δ×PM1-PM2,
In formula, PM' representation theory pressure parameter, PM1Indicate current observed pressure parameter, δ indicates smoothing factor, PM2Table
Show previous observed pressure parameter.Above-mentioned smoothing factor δ can be arranged according to filtering accuracy.
The present embodiment is by carrying out at smothing filtering current observed pressure parameter and previous observed pressure parameter
Reason, available more accurate theoretical pressure parameter.
Traditional scheme generallys use the fuel concentration in concentration detection sensor detection cylinder, determines whether it reaches overrich
Condition, however concentration detection sensor be only capable of in a specific temperature environment (such as 200 to 300 degrees Celsius) could to fuel concentration into
Row accurately obtains, however the temperature in cylinder is often difficult to maintain in above-mentioned specific temperature environment, it is difficult to
It is accurately detected to whether the fuel oil in cylinder reaches overrich condition.
In order to more precisely detect whether the fuel oil in cylinder reaches overrich condition, in one embodiment, detecting
To after ignition signal, the above method further include:
According to the second attenuation coefficient continuous decrement fuel injection amount, when fuel injection amount decays to setting injection value, if
Engine speed is lower than the first rotary speed threshold value, then determines that the fuel oil in cylinder reaches overrich condition.
Above-mentioned second attenuation coefficient can be set to a relatively small attenuation coefficient, for example be set as 5% equivalence.It is above-mentioned
Setting injection value can be arranged according to the configuration feature of I. C. engine, for example be set as the 30% of the original injection value of engine
It is equivalent.Above-mentioned first rotary speed threshold value can be set to 1200 revs/min of equal tachometer values.
ECU i.e. progress injection control initial stage, gradually decreases fuel oil according to the second attenuation coefficient after detecting ignition signal
The amount of injection, i.e., the amount of fuel sprayed each time ratio more corresponding than amount of fuel the second attenuation coefficient of decaying that the last time is sprayed
(such as each time decaying 5%), when fuel injection amount decays to setting injection value, engine speed still is below the first revolving speed threshold
Value, shows that the fuel oil in cylinder reaches overrich condition, and engine is not started smoothly, the fuel oil that needs largely to decay at this time spray
The amount of penetrating.
As one embodiment, before according to the second attenuation coefficient continuous decrement fuel injection amount, above scheme is also wrapped
It includes:
The corresponding initial fuel injection magnitude of Current Temperatures is read from preset injection scale, is sprayed according to initial fuel injection magnitude
Fuel oil.
When just starting igniting, internal cylinder temperature is low (be equal to environment temperature), and pressure is close to vacuum, engine rotational speed
Extremely low (driven by starting motor and passively rotated) can not be executed by the data in the Map (fuel oil map) when working normally
Injection can preset injection scale (Table) at this time, simple in the data composition ratio Map in Table, when being only used for starting
Stage: there are pressure value (or throttle opening), engine speed and/or distributive value three-dimensional table different from Map record, in Table
Record: temperature cylinder, distributive value bivariate table may indicate that the corresponding relationship between temperature cylinder and distributive value, such as: just
When igniting, environment temperature (internal cylinder temperature) is subzero 5 degree, then then presses by subzero 5 degree corresponding distributive value oil spouts if 0 degree
0 degree of corresponding distributive value oil spout.It can be on the basis of preset value every time on the basis of upper primary according to the second attenuation coefficient
Decay certain ratio, can be big on the basis of previous when being determined as fuel oil overrich according to the first attenuation coefficient
Ratio decaying.
The present embodiment can read the corresponding initial spray of Current Temperatures after internal-combustion engine ignition from preset injection scale
Oil mass value makes identified initial fuel injection magnitude match with the real time temperature in cylinder to control fuel oil injection, can be into one
Step improves the starting effect of internal combustion engine.
In order to more precisely detect whether the fuel oil in cylinder reaches overrich condition, in another embodiment, examining
After measuring ignition signal, the above method can also include:
Detection engine speed reaches the revolving speed decrease speed after revolving speed peak value, if revolving speed decrease speed is greater than the second revolving speed
Threshold value then determines that the fuel oil in cylinder reaches overrich condition.
Above-mentioned second rotary speed threshold value can be arranged according to the configuration feature of I. C. engine, for example be set as 300 revs/min
Clock is equivalent.After detecting ignition signal, engine speed is gradually increasing, and engine speed may go out after rising to revolving speed peak value
The situation now dropped when being specifically greater than the second rotary speed threshold value, shows the combustion in cylinder if the revolving speed decrease speed of engine is too fast
Oil reaches overrich condition, and engine is not started smoothly, needs fuel injection amount of largely decaying at this time.
It should be understood that although each step in the flow chart of Fig. 1 is successively shown according to the instruction of arrow, this
A little steps are not that the inevitable sequence according to arrow instruction successively executes.Unless expressly state otherwise herein, these steps
It executes there is no the limitation of stringent sequence, these steps can execute in other order.Moreover, at least part in Fig. 1
Step may include that perhaps these sub-steps of multiple stages or stage are executed in synchronization to multiple sub-steps
It completes, but can execute at different times, the execution sequence in these sub-steps or stage, which is also not necessarily, successively to be carried out,
But it can be executed in turn or alternately at least part of the sub-step or stage of other steps or other steps.
In one embodiment, as shown in figure 3, providing a kind of startor of internal combustion engine, comprising: attenuation module 210 is sentenced
Disconnected module 230 and injection control module 250, in which:
Attenuation module 210, after detecting ignition signal, if the fuel oil in cylinder reaches overrich condition, according to
One attenuation coefficient decaying fuel injection amount；
Judgment module 230, for judging whether air inlet intraductal atmospheric pressure is steady according to observed pressure parameter and theoretical pressure parameter
It is fixed；
Injection control module 250 sprays fuel oil according to target flow if unstable for air inlet intraductal atmospheric pressure；Target
Flow is the fuel flow determined according to theoretical pressure parameter and preset fuel oil map.
In one embodiment, above-mentioned judgment module is further used for:
If the difference of observed pressure parameter and theoretical pressure parameter in preset difference range, does not determine intratracheal air pressure
It is unstable.
In one embodiment, above-mentioned startor of internal combustion engine further include:
Module is rejected, for rejecting the peak value in multiple observed pressure parameters, is joined according to the observed pressure after rejecting peak value
Number determines theoretical pressure parameter.
In one embodiment, above-mentioned startor of internal combustion engine further include:
The disposal of gentle filter module, it is flat for being carried out to current observed pressure parameter and previous observed pressure parameter
Sliding filtering processing, obtains theoretical pressure parameter.
In one embodiment, above-mentioned startor of internal combustion engine further include:
First determination module, for decaying in fuel injection amount according to the second attenuation coefficient continuous decrement fuel injection amount
To when setting injection value, if engine speed is lower than the first rotary speed threshold value, determine that the fuel oil in cylinder reaches overrich condition.
As one embodiment, above-mentioned startor of internal combustion engine further include:
Read module, for reading the corresponding initial fuel injection magnitude of Current Temperatures from preset injection scale, according to first
Beginning oil spout magnitude sprays fuel oil；Spray the corresponding relationship between scale record temperature and distributive value.
In one embodiment, above-mentioned startor of internal combustion engine further include:
Second determination module, for detecting the revolving speed decrease speed after engine speed reaches revolving speed peak value, if under revolving speed
Reduction of speed degree is greater than the second rotary speed threshold value, then determines that the fuel oil in cylinder reaches overrich condition.
Specific about startor of internal combustion engine limits the restriction that may refer to above for internal combustion engine start method,
This is repeated no more.Modules in above-mentioned startor of internal combustion engine can come fully or partially through software, hardware and combinations thereof
It realizes.Above-mentioned each module can be embedded in the form of hardware or independently of in the processor in computer equipment, can also be with software
Form is stored in the memory in computer equipment, executes the corresponding operation of the above modules in order to which processor calls.
In one embodiment, a kind of device for controlling engine of internal combustion engine, the engine control of the internal combustion engine are provided
Equipment can be terminal, and internal structure chart can be as shown in Figure 4.The device for controlling engine of the internal combustion engine includes passing through system
Processor, memory, network interface and the display screen of bus connection.Wherein, the processing of the device for controlling engine of the internal combustion engine
Device is for providing calculating and control ability.The memory of the device for controlling engine of the internal combustion engine includes that non-volatile memories are situated between
Matter, built-in storage.The non-volatile memory medium is stored with operating system and computer program.The built-in storage is non-volatile
The operation of operating system and computer program in storage medium provides environment.The network of the device for controlling engine of the internal combustion engine
Interface is used to communicate with external terminal by network connection.To realize a kind of internal combustion when the computer program is executed by processor
Machine starts method.The display screen of the device for controlling engine of the internal combustion engine can be liquid crystal display or electric ink is shown
Screen.
It will be understood by those skilled in the art that structure shown in Fig. 4, only part relevant to application scheme is tied
The block diagram of structure does not constitute the restriction of the device for controlling engine for the internal combustion engine being applied thereon to application scheme, specifically
Internal combustion engine device for controlling engine may include than more or fewer components as shown in the figure, or the certain components of combination,
Or with different component layouts.
In one embodiment, it provides a kind of device for controlling engine of internal combustion engine, including memory, processor and deposits
The computer program that can be run on a memory and on a processor is stored up, processor realizes following step when executing computer program
It is rapid:
After detecting ignition signal, if the fuel oil in cylinder reaches overrich condition, decays according to the first attenuation coefficient and fire
Oil spurts amount；
Judge whether air inlet intraductal atmospheric pressure is stable according to observed pressure parameter and theoretical pressure parameter；
If air inlet intraductal atmospheric pressure is unstable, fuel oil is sprayed according to target flow；Target flow is to join according to theoretical pressure
The fuel flow that several and preset fuel oil map determines.
In one embodiment, it is also performed the steps of when processor executes computer program
If the difference of observed pressure parameter and theoretical pressure parameter in preset difference range, does not determine intratracheal air pressure
It is unstable.
In one embodiment, it is also performed the steps of when processor executes computer program
The peak value in multiple observed pressure parameters is rejected, theoretical pressure is determined according to the observed pressure parameter after rejecting peak value
Parameter.
In one embodiment, it is also performed the steps of when processor executes computer program
The disposal of gentle filter is carried out to current observed pressure parameter and previous observed pressure parameter, obtains theoretical pressure
Force parameter.
In one embodiment, it is also performed the steps of when processor executes computer program
According to the second attenuation coefficient continuous decrement fuel injection amount, when fuel injection amount decays to setting injection value, if
Engine speed is lower than the first rotary speed threshold value, then determines that the fuel oil in cylinder reaches overrich condition.
In one embodiment, it is also performed the steps of when processor executes computer program
The corresponding initial fuel injection magnitude of Current Temperatures is read from preset injection scale, is sprayed according to initial fuel injection magnitude
Fuel oil；Spray the corresponding relationship between scale record temperature and distributive value.
In one embodiment, it is also performed the steps of when processor executes computer program
Detection engine speed reaches the revolving speed decrease speed after revolving speed peak value, if revolving speed decrease speed is greater than the second revolving speed
Threshold value then determines that the fuel oil in cylinder reaches overrich condition.
In one embodiment, a kind of computer readable storage medium is provided, computer program is stored thereon with, is calculated
Machine program performs the steps of when being executed by processor
After detecting ignition signal, if the fuel oil in cylinder reaches overrich condition, decays according to the first attenuation coefficient and fire
Oil spurts amount；
Judge whether air inlet intraductal atmospheric pressure is stable according to observed pressure parameter and theoretical pressure parameter；
If air inlet intraductal atmospheric pressure is unstable, fuel oil is sprayed according to target flow；Target flow is to join according to theoretical pressure
The fuel flow that several and preset fuel oil map determines.
In one embodiment, it is also performed the steps of when computer program is executed by processor
If the difference of observed pressure parameter and theoretical pressure parameter in preset difference range, does not determine intratracheal air pressure
It is unstable.
In one embodiment, it is also performed the steps of when computer program is executed by processor
The peak value in multiple observed pressure parameters is rejected, theoretical pressure is determined according to the observed pressure parameter after rejecting peak value
Parameter.
In one embodiment, it is also performed the steps of when computer program is executed by processor
The disposal of gentle filter is carried out to current observed pressure parameter and previous observed pressure parameter, obtains theoretical pressure
Force parameter.
In one embodiment, it is also performed the steps of when computer program is executed by processor
According to the second attenuation coefficient continuous decrement fuel injection amount, when fuel injection amount decays to setting injection value, if
Engine speed is lower than the first rotary speed threshold value, then determines that the fuel oil in cylinder reaches overrich condition.
In one embodiment, it is also performed the steps of when computer program is executed by processor
The corresponding initial fuel injection magnitude of Current Temperatures is read from preset injection scale, is sprayed according to initial fuel injection magnitude
Fuel oil；Spray the corresponding relationship between scale record temperature and distributive value.
In one embodiment, it is also performed the steps of when computer program is executed by processor
Detection engine speed reaches the revolving speed decrease speed after revolving speed peak value, if revolving speed decrease speed is greater than the second revolving speed
Threshold value then determines that the fuel oil in cylinder reaches overrich condition.
Those of ordinary skill in the art will appreciate that realizing all or part of the process in above-described embodiment method, being can be with
Relevant hardware is instructed to complete by computer program, the computer program can be stored in a non-volatile computer
In read/write memory medium, the computer program is when being executed, it may include such as the process of the embodiment of above-mentioned each method.Wherein,
To any reference of memory, storage, database or other media used in each embodiment provided herein,
Including non-volatile and/or volatile memory.Nonvolatile memory may include read-only memory (ROM), programming ROM
(PROM), electrically programmable ROM (EPROM), electrically erasable ROM (EEPROM) or flash memory.Volatile memory may include
Random access memory (RAM) or external cache.By way of illustration and not limitation, RAM is available in many forms,
Such as static state RAM (SRAM), dynamic ram (DRAM), synchronous dram (SDRAM), double data rate sdram (DDRSDRAM), enhancing
Type SDRAM (ESDRAM), synchronization link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM
(RDRAM), direct memory bus dynamic ram (DRDRAM) and memory bus dynamic ram (RDRAM) etc..
Each technical characteristic of above embodiments can be combined arbitrarily, for simplicity of description, not to above-described embodiment
In each technical characteristic it is all possible combination be all described, as long as however, the combination of these technical characteristics be not present lance
Shield all should be considered as described in this specification.
Term involved in the embodiment of the present application " first second third " is only to distinguish similar object, does not represent needle
To the particular sorted of object, it is possible to understand that specific sequence can be interchanged in ground, " first second third " in the case where permission
Or precedence.It should be understood that the object that " first second third " is distinguished is interchangeable under appropriate circumstances, so as to retouch here
The embodiments herein stated can be performed in other sequences than those illustrated or described herein.
The term " includes " of the embodiment of the present application and " having " and their any deformations, it is intended that cover non-exclusive
Include.Such as contain series of steps or module process, method, device, product or equipment be not limited to it is listed
Step or module, but optionally further comprising the step of not listing or module, or optionally further comprising for these processes, side
Method, product or equipment intrinsic other steps or module.
Referenced herein " multiple " refer to two or more."and/or", the association for describing affiliated partner are closed
System indicates may exist three kinds of relationships, for example, A and/or B, can indicate: individualism A exists simultaneously A and B, individualism
These three situations of B.Character "/" typicallys represent the relationship that forward-backward correlation object is a kind of "or".
The several embodiments of the application above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the concept of this application, various modifications and improvements can be made, these belong to the protection of the application
Range.Therefore, the scope of protection shall be subject to the appended claims for the application patent.
Claims (10)
1. a kind of internal combustion engine start method, which is characterized in that the described method includes:
After detecting ignition signal, if the fuel oil in cylinder reaches overrich condition, according to the decaying fuel oil spray of the first attenuation coefficient
The amount of penetrating；
Judge whether air inlet intraductal atmospheric pressure is stable according to observed pressure parameter and theoretical pressure parameter；
If the air inlet intraductal atmospheric pressure is unstable, fuel oil is sprayed according to target flow；The target flow is according to the reason
The fuel flow determined by pressure parameter and preset fuel oil map.
2. the method according to claim 1, wherein described sentence according to observed pressure parameter and theoretical pressure parameter
Breaking, whether air inlet intraductal atmospheric pressure is stable to include:
If the difference of the observed pressure parameter and theoretical pressure parameter not in preset difference range, determines described intratracheal
Air pressure is unstable.
3. the method according to claim 1, wherein the determination process of the theoretical pressure parameter includes:
The peak value in the multiple observed pressure parameter is rejected, the theory is determined according to the observed pressure parameter after rejecting peak value
Pressure parameter.
4. the method according to claim 1, wherein the determination process of the theoretical pressure parameter includes:
The disposal of gentle filter is carried out to current observed pressure parameter and previous observed pressure parameter, obtains the theoretical pressure
Force parameter.
5. method according to any one of claims 1 to 4, which is characterized in that after detecting ignition signal, the method
Further include:
According to the second attenuation coefficient continuous decrement fuel injection amount, when the fuel injection amount decays to setting injection value, if
Engine speed is lower than the first rotary speed threshold value, then determines that the fuel oil in the cylinder reaches overrich condition.
6. according to the method described in claim 5, it is characterized in that, according to the second attenuation coefficient continuous decrement fuel injection amount
Before, the scheme further include:
The corresponding initial fuel injection magnitude of Current Temperatures is read from preset injection scale, is sprayed according to the initial fuel injection magnitude
Fuel oil；Corresponding relationship between the injection scale record temperature and distributive value.
7. method according to any one of claims 1 to 4, which is characterized in that after detecting ignition signal, the method
Further include:
Detection engine speed reaches the revolving speed decrease speed after revolving speed peak value, if the revolving speed decrease speed is greater than the second revolving speed
Threshold value then determines that the fuel oil in the cylinder reaches overrich condition.
8. a kind of startor of internal combustion engine, which is characterized in that described device includes:
Attenuation module, after detecting ignition signal, if the fuel oil in cylinder reaches overrich condition, according to the first decaying system
Number decaying fuel injection amount；
Judgment module, for judging whether air inlet intraductal atmospheric pressure is stable according to observed pressure parameter and theoretical pressure parameter；
Injection control module sprays fuel oil according to target flow if unstable for the air inlet intraductal atmospheric pressure；The target
Flow is the fuel flow determined according to the theoretical pressure parameter and preset fuel oil map.
9. a kind of device for controlling engine of internal combustion engine, including memory, processor and storage on a memory and can handled
The computer program run on device, which is characterized in that the processor realized when executing the computer program claim 1 to
The step of any one of 7 the method.
10. a kind of computer readable storage medium, is stored thereon with computer program, which is characterized in that the computer program
The step of method described in any one of claims 1 to 7 is realized when being executed by processor.
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| CN201910327221.2A CN109973230B (en) | 2019-04-23 | 2019-04-23 | Internal combustion engine starting method, internal combustion engine starting device, engine control apparatus, and storage medium |
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