CN110296012A - A kind of engine fuel injection control method, device, storage medium and computer equipment - Google Patents
A kind of engine fuel injection control method, device, storage medium and computer equipment Download PDFInfo
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- CN110296012A CN110296012A CN201910588656.2A CN201910588656A CN110296012A CN 110296012 A CN110296012 A CN 110296012A CN 201910588656 A CN201910588656 A CN 201910588656A CN 110296012 A CN110296012 A CN 110296012A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/14—Introducing closed-loop corrections
- F02D41/1401—Introducing closed-loop corrections characterised by the control or regulation method
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/14—Introducing closed-loop corrections
- F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
- F02D41/1444—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases
- F02D41/1454—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being an oxygen content or concentration or the air-fuel ratio
-
- 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
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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)
Abstract
The invention discloses a kind of engine fuel injection control method, device, storage medium and computer equipments, can obtain the current oxygen concentration in the tail gas under current time；Determine the difference of the current oxygen concentration Yu default oxygen concentration；The corrected parameter of the fuel injection parameters of engine is determined according to the difference；It is modified according to Current fuel nozzle parameter of the corrected parameter to engine.The present invention is by the way of correcting fuel injection parameters, engine is overcome under using different fuel qualities, fuel injection still is carried out according to fixed fuel injection parameters and causes the technical problem of engine power deficiency, and then has reached the technical effect for guaranteeing that engine is capable of providing sufficient power.
Description
Technical field
The present invention relates to field of engine control more particularly to a kind of engine fuel injection control methods, device, storage
Medium and computer equipment.
Background technique
Nowadays, engine can be widely used in the machine that can be converted into mechanical energy of other forms as one kind
On the various vehicles and mechanical device, and sufficient power can be provided to the vehicles and mechanical device, become measurement hair
The major criterion of motivation performance superiority and inferiority.
In the operational process of engine, engine relies primarily on factory-designed fuel injection parameters and carries out fuel spray
It penetrates, wherein the factory-designed fuel injection parameters of engine are in delivery test, according to the fuel for being supplied to engine at that time
What quality determined.
However, being that the fuel quality of engine is supplied to engine when may be with delivery test in user's actual use
Fuel quality have differences, if at this time engine still according to factory-designed fuel injection parameters carry out fuel injection,
It is possible that the problem of being short of power of engine.Therefore, how to guarantee that engine is capable of providing abundance in actual use
Power, the problem of becoming related technical personnel's urgent need to resolve.
Summary of the invention
In view of the above problems, the present invention provides a kind of one for overcoming the above problem or at least being partially solved the above problem
Kind engine fuel injection control method, device, storage medium and computer equipment, technical solution are as follows:
A kind of engine fuel injection control method may include:
Obtain the current oxygen concentration in the tail gas under current time；
Determine the difference of the current oxygen concentration Yu default oxygen concentration；
The corrected parameter of the fuel injection parameters of engine is determined according to the difference；
It is modified according to Current fuel nozzle parameter of the corrected parameter to engine.
Optionally, the current oxygen concentration in the tail gas obtained under current time, comprising:
Obtain the current oxygen concentration in the tail gas under the current time of nitrogen oxide sensor acquisition.
Optionally, the corrected parameter of the fuel injection parameters that engine is determined according to the difference, comprising:
Determine whether the absolute value of the difference is greater than preset value, if it is, the difference is inputted proportional, integral-
In Derivating controller, the amendment ginseng of the fuel injection parameters of the proportional, integral-Derivating controller output engine is obtained
Number.
Optionally, it is described be modified according to Current fuel nozzle parameter of the corrected parameter to engine after,
The method also includes:
It is stored the fuel injection parameters of revised engine as the Current fuel nozzle parameter of engine.
Optionally, the method also includes:
Where detecting the engine after vehicle addition fuel, the fuel injection parameters of storage are adjusted to just
Beginning parameter.
Optionally, any of the above-described kind of the method, it is described to be sprayed according to Current fuel of the corrected parameter to engine
Parameter is modified, comprising:
Obtain the Current fuel nozzle parameter of engine；
The Current fuel nozzle parameter is multiplied with the corrected parameter, obtains the fuel injection of revised engine
Parameter；
The fuel injection process of the engine is controlled according to the fuel injection parameters of revised engine.
Optionally, the Current fuel nozzle parameter for obtaining engine, comprising:
Obtain the current rotating speed and current loads of engine；
The Current fuel nozzle parameter of engine is determined according to the current rotating speed and the current loads.
A kind of engine fuel injection control apparatus, comprising: current oxygen concentration obtaining unit, difference value determining unit, amendment
Parameter determination unit and amending unit；
The current oxygen concentration obtaining unit, for obtaining the current oxygen concentration in the tail gas under current time；
The difference value determining unit, for determining the difference of the current oxygen concentration Yu default oxygen concentration；
The corrected parameter determination unit, the amendment ginseng of the fuel injection parameters for determining engine according to the difference
Number；
The amending unit, for being modified according to Current fuel nozzle parameter of the corrected parameter to engine.
A kind of storage medium is stored with computer executable instructions in the storage medium, and the computer is executable to be referred to
When order is loaded and is executed by processor, engine fuel injection control method described in any of the above-described kind of realization.
A kind of computer equipment, which is characterized in that including processor, memory and be stored on the memory and can be
The program run on the processor, the processor at least perform the steps of when executing program
Obtain the current oxygen concentration in the tail gas under current time；
Determine the difference of the current oxygen concentration Yu default oxygen concentration；
The corrected parameter of the fuel injection parameters of engine is determined according to the difference；
It is modified according to Current fuel nozzle parameter of the corrected parameter to engine.
By above-mentioned technical proposal, a kind of engine fuel injection control method provided by the invention, device, storage medium
And computer equipment, the current oxygen concentration in the tail gas under current time can be obtained；It determines the current oxygen concentration and presets
The difference of oxygen concentration；The corrected parameter of the fuel injection parameters of engine is determined according to the difference；According to the corrected parameter
The Current fuel nozzle parameter of engine is modified.The present invention overcomes hair by the way of correcting fuel injection parameters
Motivation still causes to start motor-driven under using different fuel qualities according to fixed fuel injection parameters progress fuel injection
Hypodynamic technical problem, and then reached the technical effect for guaranteeing that engine is capable of providing sufficient power.
The above description is only an overview of the technical scheme of the present invention, in order to better understand the technical means of the present invention,
And it can be implemented in accordance with the contents of the specification, and in order to allow above and other objects of the present invention, feature and advantage can
It is clearer and more comprehensible, the followings are specific embodiments of the present invention.
Detailed description of the invention
By reading the following detailed description of the preferred embodiment, various other advantages and benefits are common for this field
Technical staff will become clear.The drawings are only for the purpose of illustrating a preferred embodiment, and is not considered as to the present invention
Limitation.And throughout the drawings, the same reference numbers will be used to refer to the same parts.In the accompanying drawings:
Fig. 1 shows a kind of flow diagram of engine fuel injection control method provided in an embodiment of the present invention；
Fig. 2 shows the flow diagrams of another engine fuel injection control method provided in an embodiment of the present invention；
Fig. 3 shows the flow diagram of another engine fuel injection control method provided in an embodiment of the present invention；
Fig. 4 shows the operation of proportional, integral-Derivating controller provided in an embodiment of the present invention and illustrates to illustrate
Figure；
Fig. 5 shows the flow diagram of another engine fuel injection control method provided in an embodiment of the present invention；
Fig. 6 shows the flow diagram of another engine fuel injection control method provided in an embodiment of the present invention；
Fig. 7 shows the flow diagram of another engine fuel injection control method provided in an embodiment of the present invention；
Fig. 8 shows a kind of structural schematic diagram of engine fuel injection control apparatus provided in an embodiment of the present invention；
Fig. 9 shows the structural schematic diagram of another engine fuel injection control apparatus provided in an embodiment of the present invention；
Figure 10 shows the structural schematic diagram of another engine fuel injection control apparatus provided in an embodiment of the present invention；
Figure 11 shows the structural schematic diagram of another engine fuel injection control apparatus provided in an embodiment of the present invention.
Specific embodiment
Exemplary embodiments of the present disclosure are described in more detail below with reference to accompanying drawings.Although showing the disclosure in attached drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here
It is limited.On the contrary, these embodiments are provided to facilitate a more thoroughly understanding of the present invention, and can be by the scope of the present disclosure
It is fully disclosed to those skilled in the art.
As shown in Figure 1, a kind of engine fuel injection control method provided in an embodiment of the present invention, may include:
Current oxygen concentration in S100, the tail gas under acquisition current time；
Specifically, current oxygen concentration can be the content of oxygen in the tail gas in the exhaust pipe of present engine.The present invention
Embodiment can be monitored the tail gas in the exhaust pipe of engine by sensor, obtain in the tail gas under current time
Current oxygen concentration.The mode for obtaining current oxygen concentration can be specific as shown in Fig. 2, in another hair provided in an embodiment of the present invention
In motivation fuel injection control device, step S100 can be with are as follows:
Current oxygen concentration in S110, the tail gas under the current time for obtaining nitrogen oxide sensor acquisition.
Specifically, nitrogen oxide sensor can acquire the tail gas in the exhaust pipe of engine, and real-time detection in real time
Oxygen concentration in tail gas is as current oxygen concentration.
S200, the difference for determining the current oxygen concentration Yu default oxygen concentration；
Specifically, default oxygen concentration can be in the test before the factory of engine, pass through nitrogen oxide sensor
Oxygen concentration in the tail gas of acquisition.The embodiment of the present invention can be true according to the test result after testing before factory engine
Surely oxygen concentration is preset.For example, during test before engine factory engine, when engine provides sufficient move
When power, the oxygen concentration in tail gas obtained by nitrogen oxide sensor floats in 10% to 11% range, therefore default
Oxygen concentration can be set in 10% to 11% range according to actual needs.
Used in the quality and test of the engine before factory of the fuel used at current time as engine
The quality of fuel has differences, therefore under current time, and some or all of the current performance of engine may be not achieved out
The performance of the engine in factory's test.By determining the difference of current oxygen concentration and default oxygen concentration, engine can reflect
The size of performance difference when current performance and delivery test.
S300, determined according to the difference engine fuel injection parameters corrected parameter；
Specifically, fuel can be fuel oil (such as diesel oil, gasoline), natural gas.It, can according to the positive and negative and size of difference
To determine the size of the corrected parameter of fuel injection parameters.For example, initial correction parameter is 1, the current oxygen concentration of acquisition is subtracted
The difference of default oxygen concentration is positive value, then corrected parameter can be the value less than 1, and it is dense that the current oxygen concentration of acquisition subtracts default oxygen
The difference of degree is negative value, then corrected parameter can be the value greater than 1.The amendment ginseng of the specific fuel injection parameters for determining engine
Several processes can be as shown in figure 3, another kind engine fuel injection control method provided in an embodiment of the present invention, step S300
It can specifically include:
S310, determine whether the absolute value of the difference is greater than preset value, if it is, the difference is inputted ratio-
In integral-derivative controller, repairing for the fuel injection parameters of the proportional, integral-Derivating controller output engine is obtained
Positive parameter.
The embodiment of the present invention can determine preset value according to the test result after testing before factory engine.Example
Such as, when testing before factory engine, when the difference of current oxygen concentration and default oxygen concentration is greater than 0.1, discovery is started
Machine can not provide sufficient power or provide the handling reduction that excessive power makes the control device that coupled engines is connected,
Then preset value is used as by 0.1.Even if the oxygen concentration in the tail gas of acquisition is all due in the case where engine uses equal fuel
May not be identical, therefore when the absolute value of the difference of current oxygen concentration and default oxygen concentration is less than preset value, it is believed that it is current
The performance of engine is close to or up to the performance in delivery test, therefore does not need to be adjusted engine.If current oxygen is dense
When degree and the absolute value of the difference of default oxygen concentration are greater than preset value, then in the performance and delivery test that illustrate current engine
Performance difference it is larger, need to be adjusted the performance of engine.
The embodiment of the present invention is adjusted the performance of engine can be by the fuel injection parameters of acquisition engine
Corrected parameter, and then realized according to the fuel injection parameters that corrected parameter adjusts engine.The embodiment of the present invention obtains engine
The modes of corrected parameter of fuel injection parameters can be the difference of current oxygen concentration and default oxygen concentration is input to ratio-
In integral-derivative controller, by proportional, integral-Derivating controller according to linear group of difference progress ratio, integral and differential
It is total to calculate, finally by the corrected parameter of proportional, integral-Derivating controller output engine fuel injection parameters.For the ease of
Proportional, integral-Derivating controller operation is understood, as shown in figure 4, the control action of ratio is proportionally to reflect
Control deviation signal e (t), once generating, proportional, integral-Derivating controller generates control action immediately and reduces deviation, control deviation
The power of production depends on Proportional coefficient K p.Eliminate static difference when the control action of integral, improve control without margin, integral
The power of control action depends on integration time constant Ti, and Ti is bigger, and integral control action is weaker.The control action of differential is main
It is to reflect the variation tendency of deviation signal, and an effective early stage amendment letter can be introduced before deviation signal becomes too big
Number, to accelerate response speed, reduce overshoot.Because proportional, integral-Derivating controller can be made using 3 kinds of different controls
Combination is to track the different working condition of controlled device, to reduce the error of the corrected parameter of acquisition.
S400, it is modified according to Current fuel nozzle parameter of the corrected parameter to engine.
Specifically, the Current fuel nozzle parameter of engine may include the amount of injection and/or injection arteries and veins of present engine
It is wide.Engine is related in the amount of injection under current time of the power that current time provides and engine and/or injection pulse width, because
This embodiment of the present invention can be adjusted by the amount of injection and/or injection pulse width of the corrected parameter to Current fuel, make to start
Machine performance is close or consistent with engine performance when delivery test.The Current fuel nozzle parameter of engine is modified
Detailed process can be as shown in figure 5, another kind engine fuel injection control method provided in an embodiment of the present invention, step S400
It can specifically include:
S410, the Current fuel nozzle parameter for obtaining engine；
Specifically, Current fuel nozzle parameter can be obtained by sensor, can also be obtained in storage medium.It can be with
Understand, after engine factory when first used, engine can be carried out according to the fuel injection parameters in storage medium
Fuel injection further still uses the fuel with the same quality used when delivery test after engine factory, all may be used
To directly obtain the fuel injection that fuel injection parameters carry out engine in storage medium, and for being worked as from sensor
The mode of preceding fuel injection parameters can be as shown in fig. 6, another kind engine fuel injection control provided in an embodiment of the present invention
Method, step S410 can be specifically included:
S411, the current rotating speed and current loads for obtaining engine；
Wherein, the current loads of engine are related with the resistance that the vehicle where present engine is subject to when advancing, example
Such as, the weight bearing of the vehicle, the smoothness on road surface and fuel used quality can have an impact load.Under normal conditions,
The embodiment of the present invention can air inflow and the currently theoretical cylinder full of engine based on the cylinder for being currently entering engine
The current loads of air inflow acquisition engine.For example, the air inflow for the cylinder for being currently entering engine and current theory are full of
The ratio of the air inflow of the cylinder of engine is determined as the current loads of the engine.
S412, the Current fuel nozzle parameter that engine is determined according to the current rotating speed and the current loads.
Specifically, the embodiment of the present invention can obtain under current time the current rotating speed of engine and current by sensor
Load.It is understood that can largely be tested engine before engine factory, wherein just including engine
Reference fuel nozzle parameter in the case where excluding the different revolving speeds and load under the various failures of engine is stored into storage medium.
The embodiment of the present invention can according to the current rotating speed and current loads of the engine of acquisition, inquired in storage medium with currently
The reference fuel nozzle parameter of revolving speed and the corresponding engine of current loads is as Current fuel nozzle parameter.For example, current
When revolving speed is 1000r/min and load is 200N*m, it can be inquired under current rotating speed and current loads in storage medium
The reference fuel nozzle parameter of corresponding engine is 2500 μ s, then Current fuel nozzle parameter is 2500 μ s.
S420, the Current fuel nozzle parameter is multiplied with the corrected parameter, obtains the combustion of revised engine
Expect nozzle parameter；
S430, the fuel injection process that the engine is controlled according to the fuel injection parameters of revised engine.
In order to make it easy to understand, citing is illustrated herein: if the injection pulse width of Current fuel nozzle parameter is 1500 μ s, and
When corrected parameter is 1.2, then the injection pulse width of the fuel injection parameters of revised engine is 1800 μ s.Revised
After the fuel injection parameters of engine, the embodiment of the present invention can control engine and be sprayed using the fuel of revised engine
The injection pulse width for penetrating parameter sprays fuel.
It is understood that any engine fuel injection control method, step S400 may be used in the embodiment of the present invention
To include step S410, S420 and S430, method and step shown in Fig. 5 is only one of situation.
A kind of engine fuel injection control method provided in an embodiment of the present invention, can obtain the tail gas under current time
In current oxygen concentration；Determine the difference of the current oxygen concentration Yu default oxygen concentration；Engine is determined according to the difference
The corrected parameter of fuel injection parameters；It is modified according to Current fuel nozzle parameter of the corrected parameter to engine.This
Inventive embodiments overcome engine under using different fuel qualities, still by the way of correcting fuel injection parameters
Fuel injection is carried out according to fixed fuel injection parameters and causes the technical problem of engine power deficiency, and then has reached guarantee
Engine is capable of providing the technical effect of sufficient power.
Optionally, it is based on method shown in FIG. 1, as shown in fig. 7, another kind engine fuel provided in an embodiment of the present invention
Ejection control method can also include: after step S400
S500, it is deposited the fuel injection parameters of revised engine as the Current fuel nozzle parameter of engine
Storage.
Specifically, after the fuel injection parameters for obtaining revised engine, by the fuel of revised engine
Nozzle parameter replaces the reference fuel nozzle parameter in storage medium as Current fuel nozzle parameter, and stores and arrive storage medium
In.Storage medium may include band Electrically Erasable Programmable Read-Only Memory.Under current rotating speed and current loads, corrected
After the fuel injection parameters of engine afterwards, by the fuel of the fuel injection parameters replacement previous moment of revised engine
Nozzle parameter is as Current fuel nozzle parameter, so that engine carries out fuel injection according to Current fuel nozzle parameter.
It should be noted that the embodiment of the present invention can be the process of a circulation adjustment engine fuel injection parameter,
It is adjusted in the fuel injection parameters that last moment obtains, obtains the Current fuel nozzle parameter at current time.For example,
Under current rotating speed and current loads, when engine is run 15 seconds, the fuel injection parameters at the moment are 1100 μ s, are adjusted
Afterwards, when engine was run to 16 seconds, the fuel injection parameters at the moment are 1500 μ s, again through adjustment, in engine
When operation was to 17 seconds, the fuel injection parameters at the moment are 1300 μ s.
The Current fuel nozzle parameter of the engine stored in storage medium in order to facilitate understanding is carried out here in connection with table 1
For example: when each revolving speed in storage medium and the fuel injection parameters under load are as shown in table 1, when engine speed is
800r/min and when load 800N*m, engine carries out fuel injection according to 800 μ s of fuel injection parameters, when engine speed tune
When whole is 1100r/min and load adjustment is 1100N*m, engine carries out fuel injection according to 1210 μ s of fuel injection parameters.
It is understood that can be the part of fuel nozzle parameter in storage medium shown in table 1, in practical applications, storage be situated between
Matter can store reference fuel nozzle parameter and/or revised fuel injection parameters under each revolving speed and each load.
Table 1
Optionally, where detecting the engine after vehicle addition fuel, the embodiment of the present invention can also will be stored
The fuel injection parameters be adjusted to initial parameter.
Specifically, the embodiment of the present invention can determine whether vehicle where engine adds fuel by fuel detector,
Specifically, whether the fuel tank of vehicle adds fuel where can detecting engine by horizontal detector, for example, to vehicle
Fuel tank added oil or combustion gas was added to be accordingly to be regarded as addition fuel.
It is understood that the quality for the fuel that engine uses in the delivery test of engine may go out with engine
The quality difference of the fuel used after factory is larger, in addition after engine factory repeatedly used in quality between fuel also phase
Difference is larger, for example, primary fuel was supplemented in A fuel station after vehicle release where engine, next time again in B fuel station
Primary fuel was supplemented, the quality of the fuel of A fuel station and the quality of the fuel of B fuel station may differ by larger.Therefore, in order to
It avoids in engine under the fuel using B fuel station, is that fuel injection parameters corresponding with the fuel of A fuel station are made
At damage, therefore, where engine vehicle addition fuel after, the fuel injection parameters stored in storage medium are adjusted to
Initial parameter, initial parameter can be the reference fuel nozzle parameter of test determination before engine factory.
Optionally, where detecting the engine after vehicle addition fuel, the embodiment of the present invention can also will be stored
Corrected parameter be adjusted to initial correction parameter, initial correction parameter can be 1.
Corresponding to the above method embodiment, the embodiment of the invention also provides a kind of controls of engine fuel injection to fill
It sets.
As shown in figure 8, a kind of engine fuel injection control apparatus provided in an embodiment of the present invention, may include: current
Oxygen concentration obtaining unit 100, difference value determining unit 200, corrected parameter determination unit 300 and amending unit 400；
The current oxygen concentration obtaining unit 100, for obtaining the current oxygen concentration in the tail gas under current time；
Specifically, current oxygen concentration can be the content of oxygen in the tail gas in the exhaust pipe of present engine.The present invention
Embodiment can be monitored the tail gas in the exhaust pipe of engine by sensor, obtain in the tail gas under current time
Current oxygen concentration.
Optionally, another engine fuel injection control apparatus provided in an embodiment of the present invention, the current oxygen concentration
It is dense that obtaining unit 100 can be specifically used for the current oxygen obtained in the tail gas under the current time of nitrogen oxide sensor acquisition
Degree.
Specifically, nitrogen oxide sensor can acquire the tail gas in the exhaust pipe of engine, and real-time detection in real time
Oxygen concentration in tail gas is as current oxygen concentration.
The difference value determining unit 200, for determining the difference of the current oxygen concentration Yu default oxygen concentration；
Specifically, default oxygen concentration can be in the test before the factory of engine, pass through nitrogen oxide sensor
Oxygen concentration in the tail gas of acquisition.The embodiment of the present invention can be true according to the test result after testing before factory engine
Surely oxygen concentration is preset.For example, during test before engine factory engine, when engine provides sufficient move
When power, the oxygen concentration in tail gas obtained by nitrogen oxide sensor floats in 10% to 11% range, therefore default
Oxygen concentration can be set in 10% to 11% range according to actual needs.
Used in the quality and test of the engine before factory of the fuel used at current time as engine
The quality of fuel has differences, therefore under current time, and some or all of the current performance of engine may be not achieved out
The performance of the engine in factory's test.By determining the difference of current oxygen concentration and default oxygen concentration, engine can reflect
The size of performance difference when current performance and delivery test.
The corrected parameter determination unit 300, for determining that the fuel injection parameters of engine are repaired according to the difference
Positive parameter；
Specifically, fuel can be fuel oil (such as diesel oil, gasoline), natural gas.It, can according to the positive and negative and size of difference
To determine the size of the corrected parameter of fuel injection parameters.For example, initial correction parameter is 1, the current oxygen concentration of acquisition is subtracted
The difference of default oxygen concentration is positive value, then corrected parameter can be the value less than 1, and it is dense that the current oxygen concentration of acquisition subtracts default oxygen
The difference of degree is negative value, then corrected parameter can be the value greater than 1.
Optionally, optionally, another engine fuel injection control apparatus provided in an embodiment of the present invention, the amendment
Parameter determination unit 300 can be specifically used for determining whether the absolute value of the difference is greater than preset value, if it is, will be described
Difference inputs in proportional, integral-Derivating controller, obtains the fuel of the proportional, integral-Derivating controller output engine
The corrected parameter of nozzle parameter.
The embodiment of the present invention can determine preset value according to the test result after testing before factory engine.Example
Such as, when testing before factory engine, when the difference of current oxygen concentration and default oxygen concentration is greater than 0.1, discovery is started
Machine can not provide sufficient power or provide the handling reduction that excessive power makes the control device that coupled engines is connected,
Then preset value is used as by 0.1.Even if the oxygen concentration in the tail gas of acquisition is all due in the case where engine uses equal fuel
May not be identical, therefore when the absolute value of the difference of current oxygen concentration and default oxygen concentration is less than preset value, it is believed that it is current
The performance of engine is close to or up to the performance in delivery test, therefore does not need to be adjusted engine.If current oxygen is dense
When degree and the absolute value of the difference of default oxygen concentration are greater than preset value, then in the performance and delivery test that illustrate current engine
Performance difference it is larger, need to be adjusted the performance of engine.
The embodiment of the present invention is adjusted the performance of engine can be by the fuel injection parameters of acquisition engine
Corrected parameter, and then realized according to the fuel injection parameters that corrected parameter adjusts engine.The embodiment of the present invention obtains engine
The modes of corrected parameter of fuel injection parameters can be the difference of current oxygen concentration and default oxygen concentration is input to ratio-
In integral-derivative controller, by proportional, integral-Derivating controller according to linear group of difference progress ratio, integral and differential
It is total to calculate, finally by the corrected parameter of proportional, integral-Derivating controller output engine fuel injection parameters.For the ease of
Proportional, integral-Derivating controller operation is understood, as shown in figure 4, the control action of ratio is proportionally to reflect
Control deviation signal e (t), once generating, proportional, integral-Derivating controller generates control action immediately and reduces deviation, control deviation
The power of production depends on Proportional coefficient K p.Eliminate static difference when the control action of integral, improve control without margin, integral
The power of control action depends on integration time constant Ti, and Ti is bigger, and integral control action is weaker.The control action of differential is main
It is to reflect the variation tendency of deviation signal, and an effective early stage amendment letter can be introduced before deviation signal becomes too big
Number, to accelerate response speed, reduce overshoot.Because proportional, integral-Derivating controller can be made using 3 kinds of different controls
Combination is to track the different working condition of controlled device, to reduce the error of the corrected parameter of acquisition.
The amending unit 400, for being repaired according to Current fuel nozzle parameter of the corrected parameter to engine
Just.
Specifically, the Current fuel nozzle parameter of engine may include the amount of injection and/or injection arteries and veins of present engine
It is wide.Engine is related in the amount of injection under current time of the power that current time provides and engine and/or injection pulse width, because
This embodiment of the present invention can be adjusted by the amount of injection and/or injection pulse width of the corrected parameter to Current fuel, make to start
Machine performance is close or consistent with engine performance when delivery test.
Optionally, as shown in figure 9, another kind engine fuel injection control apparatus provided in an embodiment of the present invention, described
Amending unit 400 may include: the first fuel injection parameters obtaining unit 410,420 and of the second fuel injection parameters obtaining unit
Fuel injection process control unit 430,
The first fuel injection parameters obtaining unit 410, for obtaining the Current fuel nozzle parameter of engine；
Specifically, Current fuel nozzle parameter can be obtained by sensor, can also be obtained in storage medium.It can be with
Understand, after engine factory when first used, engine can be carried out according to the fuel injection parameters in storage medium
Fuel injection further still uses the fuel with the same quality used when delivery test after engine factory, all may be used
To directly obtain the fuel injection that fuel injection parameters carry out engine in storage medium.
Optionally, as shown in Figure 10, another engine fuel injection control apparatus provided in an embodiment of the present invention, it is described
First fuel injection parameters obtaining unit 410 may include: that the first acquisition subelement 411 and first determines subelement 412,
Described first obtains subelement 411, for obtaining the current rotating speed and current loads of engine；
Wherein, the current loads of engine are related with the resistance that the vehicle where present engine is subject to when advancing, example
Such as, the weight bearing of the vehicle, the smoothness on road surface and fuel used quality can have an impact load.Under normal conditions,
The embodiment of the present invention can air inflow and the currently theoretical cylinder full of engine based on the cylinder for being currently entering engine
The current loads of air inflow acquisition engine.For example, the air inflow for the cylinder for being currently entering engine and current theory are full of
The ratio of the air inflow of the cylinder of engine is determined as the current loads of the engine.
Described first determines subelement 412, for determining engine according to the current rotating speed and the current loads
Current fuel nozzle parameter.
Specifically, the embodiment of the present invention can obtain under current time the current rotating speed of engine and current by sensor
Load.It is understood that can largely be tested engine before engine factory, wherein just including engine
Reference fuel nozzle parameter in the case where excluding the different revolving speeds and load under the various failures of engine is stored into storage medium.
The embodiment of the present invention can according to the current rotating speed and current loads of the engine of acquisition, inquired in storage medium with currently
The reference fuel nozzle parameter of revolving speed and the corresponding engine of current loads is as Current fuel nozzle parameter.For example, current
When revolving speed is 1000r/min and load is 200N*m, it can be inquired under current rotating speed and current loads in storage medium
The reference fuel nozzle parameter of corresponding engine is 2500 μ s, then Current fuel nozzle parameter is 2500 μ s.
The second fuel injection parameters obtaining unit 420 is used for the Current fuel nozzle parameter and the amendment
Parameter is multiplied, and obtains the fuel injection parameters of revised engine；
The fuel injection process control unit 430, for being controlled according to the fuel injection parameters of revised engine
The fuel injection process of the engine.
In order to make it easy to understand, citing is illustrated herein: if the injection pulse width of Current fuel nozzle parameter is 1500 μ s, and
When corrected parameter is 1.2, then the injection pulse width of the fuel injection parameters of revised engine is 1800 μ s.Revised
After the fuel injection parameters of engine, the embodiment of the present invention can control engine and be sprayed using the fuel of revised engine
The injection pulse width for penetrating parameter sprays fuel.
A kind of engine fuel injection control apparatus provided in an embodiment of the present invention, can obtain the tail gas under current time
In current oxygen concentration；Determine the difference of the current oxygen concentration Yu default oxygen concentration；Engine is determined according to the difference
The corrected parameter of fuel injection parameters；It is modified according to Current fuel nozzle parameter of the corrected parameter to engine.This
Inventive embodiments overcome engine under using different fuel qualities, still by the way of correcting fuel injection parameters
Fuel injection is carried out according to fixed fuel injection parameters and causes the technical problem of engine power deficiency, and then has reached guarantee
Engine is capable of providing the technical effect of sufficient power.
Optionally, as shown in figure 11, another engine fuel injection control apparatus provided in an embodiment of the present invention, may be used also
To include: storage unit 500,
The storage unit 500 is sprayed in the amending unit 400 according to Current fuel of the corrected parameter to engine
It penetrates after parameter is modified, for being sprayed the fuel injection parameters of revised engine as the Current fuel of engine
Parameter is stored.
Specifically, after the fuel injection parameters for obtaining revised engine, by the fuel of revised engine
Nozzle parameter replaces the reference fuel nozzle parameter in storage medium as Current fuel nozzle parameter, and stores and arrive storage medium
In.Storage medium may include band Electrically Erasable Programmable Read-Only Memory.Under current rotating speed and current loads, corrected
After the fuel injection parameters of engine afterwards, by the fuel of the fuel injection parameters replacement previous moment of revised engine
Nozzle parameter is as Current fuel nozzle parameter, so that engine carries out fuel injection according to Current fuel nozzle parameter.
It should be noted that the embodiment of the present invention can be the process of a circulation adjustment engine fuel injection parameter,
It is adjusted in the fuel injection parameters that last moment obtains, obtains the Current fuel nozzle parameter at current time.For example,
Under current rotating speed and current loads, when engine is run 15 seconds, the fuel injection parameters at the moment are 1100 μ s, are adjusted
Afterwards, when engine was run to 16 seconds, the fuel injection parameters at the moment are 1500 μ s, again through adjustment, in engine
When operation was to 17 seconds, the fuel injection parameters at the moment are 1300 μ s.
Optionally, another engine fuel injection control apparatus provided in an embodiment of the present invention, can also include: parameter
Adjustment unit,
The parameter adjustment unit, for where detecting the engine after vehicle addition fuel, by the institute of storage
It states fuel injection parameters and is adjusted to initial parameter.
Specifically, the embodiment of the present invention can determine whether vehicle where engine adds fuel by fuel detector,
Specifically, whether the fuel tank of vehicle adds fuel where can detecting engine by horizontal detector, for example, to vehicle
Fuel tank added oil or combustion gas was added to be accordingly to be regarded as addition fuel.
It is understood that the quality for the fuel that engine uses in the delivery test of engine may go out with engine
The quality difference of the fuel used after factory is larger, in addition after engine factory repeatedly used in quality between fuel also phase
Difference is larger, for example, primary fuel was supplemented in A fuel station after vehicle release where engine, next time again in B fuel station
Primary fuel was supplemented, the quality of the fuel of A fuel station and the quality of the fuel of B fuel station may differ by larger.Therefore, in order to
It avoids in engine under the fuel using B fuel station, is that fuel injection parameters corresponding with the fuel of A fuel station are made
At damage, therefore, where engine vehicle addition fuel after, the fuel injection parameters stored in storage medium are adjusted to
Initial parameter, initial parameter can be the reference fuel nozzle parameter of test determination before engine factory.
Optionally, where detecting the engine after vehicle addition fuel, the embodiment of the present invention can also will be stored
Corrected parameter be adjusted to initial correction parameter, initial correction parameter can be 1.
A kind of storage medium provided in an embodiment of the present invention is stored with computer executable instructions in the storage medium,
When the computer executable instructions are loaded and executed by processor, engine fuel injection as described in any one of the above embodiments is realized
Control method.
A kind of computer equipment provided in an embodiment of the present invention, including processor, memory and it is stored in the memory
Program that is upper and can running on the processor, the processor at least perform the steps of when executing program
Obtain the current oxygen concentration in the tail gas under current time；
Determine the difference of the current oxygen concentration Yu default oxygen concentration；
The corrected parameter of the fuel injection parameters of engine is determined according to the difference；
It is modified according to Current fuel nozzle parameter of the corrected parameter to engine.
The engine fuel injection control apparatus includes processor and memory, above-mentioned current oxygen concentration obtaining unit
100, difference value determining unit 200, corrected parameter determination unit 300 and amending unit 400 etc. are stored in as program unit
In reservoir, above procedure unit stored in memory is executed by processor to realize corresponding function.
Include kernel in processor, is gone in memory to transfer corresponding program unit by kernel.Kernel can be set one
Or more, fuel injection parameters are corrected by adjusting kernel parameter, guarantee that engine is capable of providing sufficient power.
Memory may include the non-volatile memory in computer-readable medium, random access memory (RAM) and/
Or the forms such as Nonvolatile memory, if read-only memory (ROM) or flash memory (flash RAM), memory include that at least one is deposited
Store up chip.
The embodiment of the invention provides a kind of storage mediums, are stored thereon with program, real when which is executed by processor
The existing engine fuel injection control method.
The embodiment of the invention provides a kind of processor, the processor is for running program, wherein described program operation
Engine fuel injection control method described in Shi Zhihang.
The embodiment of the invention provides a kind of equipment, equipment include processor, memory and storage on a memory and can
The program run on a processor, processor perform the steps of when executing program
Obtain the current oxygen concentration in the tail gas under current time；
Determine the difference of the current oxygen concentration Yu default oxygen concentration；
The corrected parameter of the fuel injection parameters of engine is determined according to the difference；
It is modified according to Current fuel nozzle parameter of the corrected parameter to engine.
Optionally, the current oxygen concentration in the tail gas obtained under current time, comprising:
Obtain the current oxygen concentration in the tail gas under the current time of nitrogen oxide sensor acquisition.
Optionally, the corrected parameter of the fuel injection parameters that engine is determined according to the difference, comprising:
Determine whether the absolute value of the difference is greater than preset value, if it is, the difference is inputted proportional, integral-
In Derivating controller, the amendment ginseng of the fuel injection parameters of the proportional, integral-Derivating controller output engine is obtained
Number.
Optionally, it is described be modified according to Current fuel nozzle parameter of the corrected parameter to engine after,
The method also includes:
It is stored the fuel injection parameters of revised engine as the Current fuel nozzle parameter of engine.
Optionally, the method also includes:
Where detecting the engine after vehicle addition fuel, the fuel injection parameters of storage are adjusted to just
Beginning parameter.
Optionally, any of the above-described kind of the method, it is described to be sprayed according to Current fuel of the corrected parameter to engine
Parameter is modified, comprising:
Obtain the Current fuel nozzle parameter of engine；
The Current fuel nozzle parameter is multiplied with the corrected parameter, obtains the fuel injection of revised engine
Parameter；
The fuel injection process of the engine is controlled according to the fuel injection parameters of revised engine.
Optionally, the Current fuel nozzle parameter for obtaining engine, comprising:
Obtain the current rotating speed and current loads of engine；
The Current fuel nozzle parameter of engine is determined according to the current rotating speed and the current loads.
Equipment herein can be server, PC, PAD, mobile phone etc..
Present invention also provides a kind of computer program products, when executing on data processing equipment, are adapted for carrying out just
The program of beginningization there are as below methods step:
Obtain the current oxygen concentration in the tail gas under current time；
Determine the difference of the current oxygen concentration Yu default oxygen concentration；
The corrected parameter of the fuel injection parameters of engine is determined according to the difference；
It is modified according to Current fuel nozzle parameter of the corrected parameter to engine.
Optionally, the current oxygen concentration in the tail gas obtained under current time, comprising:
Obtain the current oxygen concentration in the tail gas under the current time of nitrogen oxide sensor acquisition.
Optionally, the corrected parameter of the fuel injection parameters that engine is determined according to the difference, comprising:
Determine whether the absolute value of the difference is greater than preset value, if it is, the difference is inputted proportional, integral-
In Derivating controller, the amendment ginseng of the fuel injection parameters of the proportional, integral-Derivating controller output engine is obtained
Number.
Optionally, it is described be modified according to Current fuel nozzle parameter of the corrected parameter to engine after,
The method also includes:
It is stored the fuel injection parameters of revised engine as the Current fuel nozzle parameter of engine.
Optionally, the method also includes:
Where detecting the engine after vehicle addition fuel, the fuel injection parameters of storage are adjusted to just
Beginning parameter.
Optionally, any of the above-described kind of the method, it is described to be sprayed according to Current fuel of the corrected parameter to engine
Parameter is modified, comprising:
Obtain the Current fuel nozzle parameter of engine；
The Current fuel nozzle parameter is multiplied with the corrected parameter, obtains the fuel injection of revised engine
Parameter；
The fuel injection process of the engine is controlled according to the fuel injection parameters of revised engine.
Optionally, the Current fuel nozzle parameter for obtaining engine, comprising:
Obtain the current rotating speed and current loads of engine；
The Current fuel nozzle parameter of engine is determined according to the current rotating speed and the current loads.
It should be understood by those skilled in the art that, embodiments herein can provide as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the application
Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the application, which can be used in one or more,
The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) produces
The form of product.
The application is referring to method, the process of equipment (system) and computer program product according to the embodiment of the present application
Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs
Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real
The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
In a typical configuration, calculating equipment includes one or more processors (CPU), input/output interface, net
Network interface and memory.
Memory may include the non-volatile memory in computer-readable medium, random access memory (RAM) and/
Or the forms such as Nonvolatile memory, such as read-only memory (ROM) or flash memory (flash RAM).Memory is computer-readable Jie
The example of matter.
Computer-readable medium includes permanent and non-permanent, removable and non-removable media can be by any method
Or technology come realize information store.Information can be computer readable instructions, data structure, the module of program or other data.
The example of the storage medium of computer includes, but are not limited to phase change memory (PRAM), static random access memory (SRAM), moves
State random access memory (DRAM), other kinds of random access memory (RAM), read-only memory (ROM), electric erasable
Programmable read only memory (EEPROM), flash memory or other memory techniques, read-only disc read only memory (CD-ROM) (CD-ROM),
Digital versatile disc (DVD) or other optical storage, magnetic cassettes, tape magnetic disk storage or other magnetic storage devices
Or any other non-transmission medium, can be used for storage can be accessed by a computing device information.As defined in this article, it calculates
Machine readable medium does not include temporary computer readable media (transitory media), such as the data-signal and carrier wave of modulation.
It should also be noted that, the terms "include", "comprise" or its any other variant are intended to nonexcludability
It include so that the process, method, commodity or the equipment that include a series of elements not only include those elements, but also to wrap
Include other elements that are not explicitly listed, or further include for this process, method, commodity or equipment intrinsic want
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including element
There is also other identical elements in process, method, commodity or equipment.
It will be understood by those skilled in the art that embodiments herein can provide as method, system or computer program product.
Therefore, complete hardware embodiment, complete software embodiment or embodiment combining software and hardware aspects can be used in the application
Form.It is deposited moreover, the application can be used to can be used in the computer that one or more wherein includes computer usable program code
The shape for the computer program product implemented on storage media (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.)
Formula.
The above is only embodiments herein, are not intended to limit this application.To those skilled in the art,
Various changes and changes are possible in this application.It is all within the spirit and principles of the present application made by any modification, equivalent replacement,
Improve etc., it should be included within the scope of the claims of this application.
Claims (10)
1. a kind of engine fuel injection control method characterized by comprising
Obtain the current oxygen concentration in the tail gas under current time；
Determine the difference of the current oxygen concentration Yu default oxygen concentration；
The corrected parameter of the fuel injection parameters of engine is determined according to the difference；
It is modified according to Current fuel nozzle parameter of the corrected parameter to engine.
2. the method according to claim 1, wherein the current oxygen in the tail gas obtained under current time is dense
Degree, comprising:
Obtain the current oxygen concentration in the tail gas under the current time of nitrogen oxide sensor acquisition.
3. the method according to claim 1, wherein the fuel injection for determining engine according to the difference
The corrected parameter of parameter, comprising:
Determine whether the absolute value of the difference is greater than preset value, if it is, the difference is inputted proportional, integral-derivative
In controller, the corrected parameter of the fuel injection parameters of the proportional, integral-Derivating controller output engine is obtained.
4. the method according to claim 1, wherein it is described according to the corrected parameter to the current of engine
After fuel injection parameters are modified, the method also includes:
It is stored the fuel injection parameters of revised engine as the Current fuel nozzle parameter of engine.
5. according to the method described in claim 4, it is characterized by further comprising:
Where detecting the engine after vehicle addition fuel, the fuel injection parameters of storage are adjusted to initially to join
Number.
6. the method according to any one of claims 1 to 5, which is characterized in that it is described according to the corrected parameter to hair
The Current fuel nozzle parameter of motivation is modified, comprising:
Obtain the Current fuel nozzle parameter of engine；
The Current fuel nozzle parameter is multiplied with the corrected parameter, obtains the fuel injection ginseng of revised engine
Number；
The fuel injection process of the engine is controlled according to the fuel injection parameters of revised engine.
7. according to the method described in claim 6, it is characterized in that, the Current fuel nozzle parameter for obtaining engine, packet
It includes:
Obtain the current rotating speed and current loads of engine；
The Current fuel nozzle parameter of engine is determined according to the current rotating speed and the current loads.
8. a kind of engine fuel injection control apparatus characterized by comprising current oxygen concentration obtaining unit, difference determine
Unit, corrected parameter determination unit and amending unit；
The current oxygen concentration obtaining unit, for obtaining the current oxygen concentration in the tail gas under current time；
The difference value determining unit, for determining the difference of the current oxygen concentration Yu default oxygen concentration；
The corrected parameter determination unit, the corrected parameter of the fuel injection parameters for determining engine according to the difference；
The amending unit, for being modified according to Current fuel nozzle parameter of the corrected parameter to engine.
9. a kind of storage medium, which is characterized in that be stored with computer executable instructions, the computer in the storage medium
When executable instruction is loaded and executed by processor, the described in any item engine fuel injections of claim 1 to 7 as above are realized
Control method.
10. a kind of computer equipment, which is characterized in that including processor, memory and be stored on the memory and can be
The program run on the processor, the processor at least perform the steps of when executing program
Obtain the current oxygen concentration in the tail gas under current time；
Determine the difference of the current oxygen concentration Yu default oxygen concentration；
The corrected parameter of the fuel injection parameters of engine is determined according to the difference；
It is modified according to Current fuel nozzle parameter of the corrected parameter to engine.
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