CN109268162A - Engine fuel injection control method and device - Google Patents
Engine fuel injection control method and device Download PDFInfo
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- CN109268162A CN109268162A CN201811130977.XA CN201811130977A CN109268162A CN 109268162 A CN109268162 A CN 109268162A CN 201811130977 A CN201811130977 A CN 201811130977A CN 109268162 A CN109268162 A CN 109268162A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/30—Controlling fuel injection
- F02D41/3005—Details not otherwise provided for
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/10—Parameters related to the engine output, e.g. engine torque or engine speed
- F02D2200/1002—Output torque
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/10—Parameters related to the engine output, e.g. engine torque or engine speed
- F02D2200/101—Engine speed
Abstract
Engine fuel injection control method and device provided by the invention, the rate of fuel consumption relationship under various operation cylinder numbers is demarcated previously according to engine pedestal, or first calibration all cylinder workings of engine when oil consumption magnitude relation, the rate of fuel consumption relationships being then converted under various operation cylinder numbers；In this way in engine work, according to present engine revolving speed and current demand total torque, the corresponding operation cylinder number of mimimum fuel consumption rate is obtained, so that fixed multicylinder engine is converted into variable cylinder number engine, to ensure that engine operation in greater efficiency region, reduces rate of fuel consumption.
Description
Technical field
The present invention relates to engine arts, more specifically to engine fuel injection control method and device.
Background technique
Currently, automobile engine often has 3,4,5,6,8,10,12 cylinders with cylinder number.In engine work, operation
Cylinder number is exactly all stationary cylinder numbers of engine configuration.Engine Injection Control is according to engine speed and demand torque, really
Surely the distributive value of all cylinders run.But existing engine fuel injection control method, it cannot be guaranteed that the cylinder of fair amount is transported
Row, causes rate of fuel consumption higher.
Summary of the invention
In view of this, the present invention proposes a kind of engine fuel injection control method and device, engine operation to be realized is in height
Efficiency band reduces the purpose of rate of fuel consumption.
To achieve the goals above, it is proposed that scheme it is as follows:
A kind of engine fuel injection control method, comprising:
Obtain present engine revolving speed and current demand total torque；
In conjunction with the rate of fuel consumption relationship under each operation cylinder number, obtain under each operation cylinder number the present engine revolving speed with
The corresponding rate of fuel consumption of the current demand total torque, the rate of fuel consumption relationship are engine speed, engine torque and oil consumption
The corresponding relationship of rate；
From obtained rate of fuel consumption, the corresponding operation cylinder number of mimimum fuel consumption rate is determined；
In conjunction with the fuel feeding magnitude relation under the corresponding operation cylinder number of the mimimum fuel consumption rate, the present engine revolving speed is obtained
Fuel delivery corresponding with the current demand total torque, the fuel feeding magnitude relation are engine torque, engine speed and confession
The corresponding relationship of oil mass；
Configuration engine ejection cylinder number is the corresponding operation cylinder number of the mimimum fuel consumption rate, and according to obtaining fuel delivery control
Fuel injector oil spout.
Optionally, the calculating process of the rate of fuel consumption relationship under each operation cylinder number, comprising:
Control engine distinguish 1 cylinder working, 2 cylinder workings ..., N cylinder working, the N be present engine total configuration
Cylinder number；
Respectively test obtain the engine 1 cylinder working, 2 cylinder workings ..., the rate of fuel consumption relationship under N cylinder working.
Optionally, the calculating process of the rate of fuel consumption relationship under each operation cylinder number, comprising:
Engine N cylinder working is controlled, the N is total configuration cylinder number of present engine；
Test obtains oil consumption magnitude relation of the engine under N cylinder working, the oil consumption magnitude relation be engine speed,
The corresponding relationship of engine torque and oil consumption；
By the torque in oil consumption magnitude relation, respectively multiplied by 1/N, 2/N, 3/N ..., 1, and will be in the oil consumption magnitude relation
Oil consumption, respectively multiplied by 1/N, 2/N, 3/N ..., 1, obtain the engine 1 cylinder working, 2 cylinder workings ..., N cylinder
Oil consumption magnitude relation under work；
According to the engine speed and engine torque in oil consumption magnitude relation in every group of data, engine function is calculated
Rate, and the oil consumption in every group of data is obtained into rate of fuel consumption divided by the engine power being calculated；
The corresponding relationship between engine speed, engine torque and the rate of fuel consumption that is calculated is established, is obtained described
Engine 1 cylinder working, 2 cylinder workings ..., the rate of fuel consumption relationship under N cylinder working.
Optionally, the calculating process of the fuel feeding magnitude relation under each operation cylinder number, comprising:
Engine N cylinder working is controlled, the N is total configuration cylinder number of present engine；
Test obtains fuel feeding magnitude relation of the engine under N cylinder working；
By torque of the engine in the fuel feeding magnitude relation under N cylinder working, respectively multiplied by 1/N, 2/N, 3/N ...,
1, obtain the engine 1 cylinder working, 2 cylinder workings ..., the fuel feeding magnitude relation under N cylinder working.
A kind of engine Injection Control device, comprising:
Parameter acquiring unit, for obtaining present engine revolving speed and current demand total torque；
Rate of fuel consumption computing unit obtains under each operation cylinder number for combining the rate of fuel consumption relationship under each operation cylinder number
The present engine revolving speed and the corresponding rate of fuel consumption of the current demand total torque, the rate of fuel consumption relationship turn for engine
The corresponding relationship of speed, engine torque and rate of fuel consumption；
Cylinder number determination unit is run, for from obtained rate of fuel consumption, determining the corresponding operation cylinder number of mimimum fuel consumption rate；
Fuel delivery determination unit, for obtaining in conjunction with the fuel feeding magnitude relation under the corresponding operation cylinder number of the mimimum fuel consumption rate
To the present engine revolving speed and the corresponding fuel delivery of the current demand total torque, the fuel feeding magnitude relation is engine torsion
The corresponding relationship of square, engine speed and fuel delivery；
Control unit is run, is the corresponding operation cylinder number of the mimimum fuel consumption rate for configuring engine ejection cylinder number, and
Fuel injector oil spout is controlled according to fuel delivery is obtained.
Optionally, above-mentioned engine Injection Control device further include: the first rate of fuel consumption relationship computing unit, for controlling hair
Motivation distinguish 1 cylinder working, 2 cylinder workings ..., N cylinder working, the N be present engine total configuration cylinder number, test respectively
To the engine 1 cylinder working, 2 cylinder workings ..., the rate of fuel consumption relationship under N cylinder working.
Optionally, above-mentioned engine Injection Control device further include: the second rate of fuel consumption relationship computing unit is used for
Engine N cylinder working is controlled, the N is total configuration cylinder number of present engine；
Test obtains oil consumption magnitude relation of the engine under N cylinder working, the oil consumption magnitude relation be engine speed,
The corresponding relationship of engine torque and oil consumption；
By the torque in oil consumption magnitude relation, respectively multiplied by 1/N, 2/N, 3/N ..., 1, and will be in the oil consumption magnitude relation
Oil consumption, respectively multiplied by 1/N, 2/N, 3/N ..., 1, obtain the engine 1 cylinder working, 2 cylinder workings ..., N cylinder
Oil consumption magnitude relation under work；
According to the engine speed and engine torque in oil consumption magnitude relation in every group of data, engine function is calculated
Rate, and the oil consumption in every group of data is obtained into rate of fuel consumption divided by the engine power being calculated；
The corresponding relationship between engine speed, engine torque and the rate of fuel consumption that is calculated is established, is obtained described
Engine 1 cylinder working, 2 cylinder workings ..., the rate of fuel consumption relationship under N cylinder working.
Optionally, above-mentioned engine Injection Control device further include: fuel feeding magnitude relation computing unit is used for
Engine N cylinder working is controlled, the N is total configuration cylinder number of present engine；
Test obtains fuel feeding magnitude relation of the engine under N cylinder working；
By torque of the engine in the fuel feeding magnitude relation under N cylinder working, respectively multiplied by 1/N, 2/N, 3/N ...,
1, obtain the engine 1 cylinder working, 2 cylinder workings ..., the fuel feeding magnitude relation under N cylinder working.
Compared with prior art, technical solution of the present invention has the advantage that
The engine fuel injection control method and device that above-mentioned technical proposal provides are demarcated various previously according to engine pedestal
Run the rate of fuel consumption relationship under cylinder number, or first calibration all cylinder workings of engine when oil consumption magnitude relation, be then converted into each
Rate of fuel consumption relationship under kind operation cylinder number；In this way in engine work, according to present engine revolving speed and current demand
Total torque obtains the corresponding operation cylinder number of mimimum fuel consumption rate, so that fixed multicylinder engine is converted into variable cylinder number engine, from
And ensure that engine operation, in greater efficiency region, reduces rate of fuel consumption.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is a kind of flow chart of engine fuel injection control method provided in an embodiment of the present invention；
Fig. 2 is a kind of flow chart for the method for measuring oil consumption rate relationship provided in an embodiment of the present invention；
Fig. 3 is the flow chart for the method that another kind provided in an embodiment of the present invention measures oil consumption rate relationship；
Fig. 4 is a kind of flow chart for the method for measuring fuel feeding magnitude relation provided in an embodiment of the present invention；
Fig. 5 is a kind of logical construction schematic diagram of engine Injection Control device provided in an embodiment of the present invention.
Specific embodiment
Core of the invention thinking is to split engine by cylinder, convert variable cylinder number for fixed multicylinder engine and send out
Motivation；Each cylinder is considered an independent engine, according to engine speed and demand total torque, selects X cylinder working, allows
Each cylinder is worked as far as possible in optimum oil consumption region, and the overall operation efficiency of such engine is just higher, reduces rate of fuel consumption.
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
It is a kind of flow chart of engine fuel injection control method provided in this embodiment referring to Fig. 1.This method is applied to hair
Motivation controller.This method may include step:
S11: present engine revolving speed and current demand total torque are obtained.
In a specific embodiment, engine can be collected in such a way that engine speed sensor is set
Revolving speed；Engine speed can certainly be calculated by information such as speed, gears.It can be believed according to accelerator pedal aperture
Number, peripheral control unit demand torque input or speed closed loop control, current demand total torque is calculated.The present invention is to current
The calculating process of engine speed and current demand total torque, without limitation, foregoing description is by way of example only.
S12: in conjunction with the rate of fuel consumption relationship under each operation cylinder number, obtain under each operation cylinder number present engine revolving speed with
The corresponding rate of fuel consumption of current demand total torque.
Each operation cylinder number specifically refers to, the intrinsic cylinder of the engine of this vehicle, composable all operation quantity；Such as
The quantity of the intrinsic cylinder of the engine of this vehicle is 3, and composable all operation quantity are 1 cylinder, 2 cylinders and 3 cylinders, i.e., each fortune
The quantity that row cylinder number respectively refers to operation cylinder is 1,2 and 3.
The oil consumption rate relationship under each operation cylinder number can be obtained by way of demarcating in advance；Rate of fuel consumption relationship is hair
The corresponding relationship of motivation revolving speed, engine torque and rate of fuel consumption.It can also demarcate to obtain when starting all cylinder workings in advance
Then oil consumption magnitude relation turns the oil consumption rate relationship under each operation cylinder number by relationship.Step S12 is executed, current power is utilized
Machine revolving speed and current demand total torque are matched with the rate of fuel consumption relationship under each operation cylinder number respectively, obtain each operation
Corresponding rate of fuel consumption under cylinder number.
S13: from obtained rate of fuel consumption, the corresponding operation cylinder number of mimimum fuel consumption rate is determined.
S14: in conjunction with the fuel feeding magnitude relation under the corresponding operation cylinder number of mimimum fuel consumption rate, present engine revolving speed and institute are obtained
State the corresponding fuel delivery of current demand total torque.
Fuel feeding magnitude relation is the corresponding relationship of engine torque, engine speed and fuel delivery.Calibration side is first passed through in advance
Formula obtains the fuel feeding magnitude relation under each operation cylinder number.
S15: configuration engine ejection cylinder number is the corresponding operation cylinder number of mimimum fuel consumption rate, and according to obtaining fuel delivery control
Fuel injector oil spout.
Engine fuel injection control method provided in this embodiment turns in engine work according to present engine
Speed and current demand total torque, obtain the corresponding operation cylinder number of mimimum fuel consumption rate so that fixation multicylinder engine be converted into it is variable
Cylinder number engine, to ensure that engine operation in greater efficiency region, reduces rate of fuel consumption.
Referring to fig. 2, it is a kind of process for measuring oil consumption rate relationship provided in this embodiment, may include step:
S21: control engine distinguish 1 cylinder working, 2 cylinder workings ..., N cylinder working.
Cylinder N intrinsic for the total configuration cylinder number and engine of present engine.
S22: respectively test obtain engine 1 cylinder working, 2 cylinder workings ..., the rate of fuel consumption relationship under N cylinder working.
Execute step S22, detect engine under various operation cylinder numbers, different rotating speeds, difference torque when, generated consumption
Oil cut rate, and establish mutual relationship.For example, engine is in 1 cylinder working, and using engine speed as abscissa, engine
Torque is ordinate, measures equal rate of fuel consumption curve to get rate of fuel consumption relationship of the engine under 1 cylinder working is arrived.
It is shown in Figure 3, the process of oil consumption rate relationship is measured for another kind provided in this embodiment, may include step:
S31: control engine N cylinder working.
N is total configuration cylinder number of present engine.
S32: test obtains oil consumption magnitude relation of the engine under N cylinder working.
Oil consumption magnitude relation is the corresponding relationship of engine speed, engine torque and oil consumption.Execute step S32, inspection
Engine is surveyed under N cylinder working, when different rotating speeds, different torque, generated fuel consumption, and establish mutual relationship.
For example, a total of 3 cylinder of engine, engine is in 3 cylinder working, and using engine speed as abscissa, engine torque is vertical sits
Mark the oil consumptions curve such as measures to get to oil consumption magnitude relation of the engine under N cylinder working.
S33: by the torque in oil consumption magnitude relation, respectively multiplied by 1/N, 2/N, 3/N ..., 1, and will be in oil consumption magnitude relation
Oil consumption, respectively multiplied by 1/N, 2/N, 3/N ..., 1, obtain engine 1 cylinder working, 2 cylinder workings ..., N cylinder working
Under oil consumption magnitude relation.
S34: according to the engine speed and engine torque in oil consumption magnitude relation in every group of data, engine is calculated
Power, and the oil consumption in every group of data is obtained into rate of fuel consumption divided by the engine power being calculated.
Engine power calculation formula are as follows: engine power=engine torque/9550 engine speed *.Therefore, it is obtaining
When knowing engine speed and engine torque, engine power can be calculated.Step S34 is executed, every group of data are being obtained
Corresponding rate of fuel consumption.
S35: the corresponding relationship between engine speed, engine torque and the rate of fuel consumption that is calculated is established, is obtained
The engine 1 cylinder working, 2 cylinder workings ..., the rate of fuel consumption relationship under N cylinder working.
Execute step S35, the rate of fuel consumption that establishment step S34 is obtained, with calculate the rate of fuel consumption use engine speed and
The corresponding relationship of engine torque.
It is shown in Figure 4, it is a kind of process for measuring fuel feeding magnitude relation provided in this embodiment, may include step:
S41: control engine N cylinder working.
N is total configuration cylinder number of present engine.
S42: test obtains fuel feeding magnitude relation of the engine under N cylinder working.
Step S42 is executed, detects engine under N cylinder working, when different rotating speeds, different torque, generated fuel delivery,
And establish mutual relationship.For example, a total of 3 cylinder of engine, engine is cross with engine speed in 3 cylinder working
Coordinate, engine torque are ordinate, measure equal fuel deliveries curve to get fuel feeding magnitude relation of the engine under N cylinder working is arrived.
S43: by torque of the engine in the fuel feeding magnitude relation under N cylinder working, respectively multiplied by 1/N, 2/N, 3/N ...,
1, obtain engine 1 cylinder working, 2 cylinder workings ..., the fuel feeding magnitude relation under N cylinder working.
For the various method embodiments described above, for simple description, therefore, it is stated as a series of action combinations, but
Be those skilled in the art should understand that, the present invention is not limited by the sequence of acts described because according to the present invention, certain
A little steps can be performed in other orders or simultaneously.
Following is apparatus of the present invention embodiment, can be used for executing embodiment of the present invention method.For apparatus of the present invention reality
Undisclosed details in example is applied, embodiment of the present invention method is please referred to.
It is a kind of logical construction schematic diagram of engine Injection Control device provided in this embodiment, the device referring to Fig. 5
It include: parameter acquiring unit 11, rate of fuel consumption computing unit 12, operation cylinder number determination unit 13, fuel delivery determination unit 14 and fortune
Row control unit 15, wherein
Parameter acquiring unit 11, for obtaining present engine revolving speed and current demand total torque；
Rate of fuel consumption computing unit 12 obtains each operation cylinder number for combining the rate of fuel consumption relationship under each operation cylinder number
Under the present engine revolving speed and the corresponding rate of fuel consumption of the current demand total torque, the rate of fuel consumption relationship be engine turn
The corresponding relationship of speed, engine torque and rate of fuel consumption；
Cylinder number determination unit 13 is run, for from obtained rate of fuel consumption, determining the corresponding operation cylinder number of mimimum fuel consumption rate；
Fuel delivery determination unit 14, in conjunction with the mimimum fuel consumption rate it is corresponding operation cylinder number under fuel feeding magnitude relation,
The present engine revolving speed and the corresponding fuel delivery of the current demand total torque are obtained, the fuel feeding magnitude relation is engine
The corresponding relationship of torque, engine speed and fuel delivery；
Control unit 15 is run, is the corresponding operation cylinder number of the mimimum fuel consumption rate for configuring engine ejection cylinder number,
And fuel injector oil spout is controlled according to fuel delivery is obtained.
Engine Injection Control device provided in this embodiment turns in engine work according to present engine
Speed and current demand total torque, obtain the corresponding operation cylinder number of mimimum fuel consumption rate so that fixation multicylinder engine be converted into it is variable
Cylinder number engine, to ensure that engine operation in greater efficiency region, reduces rate of fuel consumption.
Optionally, above-mentioned engine Injection Control device further includes the first rate of fuel consumption relationship computing unit, for controlling hair
Motivation distinguish 1 cylinder working, 2 cylinder workings ..., N cylinder working, the N be present engine total configuration cylinder number, test respectively
To the engine 1 cylinder working, 2 cylinder workings ..., the rate of fuel consumption relationship under N cylinder working.
Optionally, above-mentioned engine Injection Control device further includes the second rate of fuel consumption relationship computing unit, is used for:
Engine N cylinder working is controlled, the N is total configuration cylinder number of present engine；
Test obtains oil consumption magnitude relation of the engine under N cylinder working, the oil consumption magnitude relation be engine speed,
The corresponding relationship of engine torque and oil consumption；
By the torque in oil consumption magnitude relation, respectively multiplied by 1/N, 2/N, 3/N ..., 1, and will be in the oil consumption magnitude relation
Oil consumption, respectively multiplied by 1/N, 2/N, 3/N ..., 1, obtain the engine 1 cylinder working, 2 cylinder workings ..., N cylinder
Oil consumption magnitude relation under work；
According to the engine speed and engine torque in oil consumption magnitude relation in every group of data, engine function is calculated
Rate, and the oil consumption in every group of data is obtained into rate of fuel consumption divided by the engine power being calculated.
Optionally, above-mentioned engine Injection Control device also wraps: fuel feeding magnitude relation computing unit is used for:
Engine N cylinder working is controlled, the N is total configuration cylinder number of present engine；
Test obtains fuel feeding magnitude relation of the engine under N cylinder working；
By torque of the engine in the fuel feeding magnitude relation under N cylinder working, respectively multiplied by 1/N, 2/N, 3/N ...,
1, obtain the engine 1 cylinder working, 2 cylinder workings ..., the fuel feeding magnitude relation under N cylinder working
The apparatus embodiments described above are merely exemplary, wherein described, unit can as illustrated by the separation member
It is physically separated with being or may not be.Some or all of the modules therein can be selected according to the actual needs
It achieves the purpose of the solution of this embodiment.Those of ordinary skill in the art are without creative efforts, it can reason
It solves and implements.
Herein, relational terms such as first and second and the like be used merely to by an entity or operation with it is another
One entity or operation distinguish, and without necessarily requiring or implying between these entities or operation, there are any this reality
Relationship or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to the packet of nonexcludability
Contain, so that the process, method, article or equipment for including a series of elements not only includes those elements, but also including
Other elements that are not explicitly listed, or further include for elements inherent to such a process, method, article, or device.
In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including the element
Process, method, article or equipment in there is also other identical elements.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
To the above description of disclosed embodiment of this invention, it can be realized professional and technical personnel in the field or use this
Invention.Various modifications to these embodiments will be readily apparent to those skilled in the art, institute herein
The General Principle of definition can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore,
The present invention will not be limited to the embodiments shown herein, and is to fit to special with principles disclosed herein and novelty
The consistent widest scope of point.
Claims (8)
1. a kind of engine fuel injection control method characterized by comprising
Obtain present engine revolving speed and current demand total torque；
In conjunction with the rate of fuel consumption relationship under each operation cylinder number, the present engine revolving speed and described is obtained under each operation cylinder number
The corresponding rate of fuel consumption of current demand total torque, the rate of fuel consumption relationship are engine speed, engine torque and rate of fuel consumption
Corresponding relationship；
From obtained rate of fuel consumption, the corresponding operation cylinder number of mimimum fuel consumption rate is determined；
In conjunction with the fuel feeding magnitude relation under the corresponding operation cylinder number of the mimimum fuel consumption rate, the present engine revolving speed and institute are obtained
The corresponding fuel delivery of current demand total torque is stated, the fuel feeding magnitude relation is engine torque, engine speed and fuel delivery
Corresponding relationship；
Configuration engine ejection cylinder number is the corresponding operation cylinder number of the mimimum fuel consumption rate, and controls oil spout according to fuel delivery is obtained
Device oil spout.
2. the method according to claim 1, wherein the calculating of the rate of fuel consumption relationship under each operation cylinder number
Process, comprising:
Control engine distinguish 1 cylinder working, 2 cylinder workings ..., N cylinder working, the N be present engine total configuration cylinder number；
Respectively test obtain the engine 1 cylinder working, 2 cylinder workings ..., the rate of fuel consumption relationship under N cylinder working.
3. the method according to claim 1, wherein the calculating of the rate of fuel consumption relationship under each operation cylinder number
Process, comprising:
Engine N cylinder working is controlled, the N is total configuration cylinder number of present engine；
Test obtains oil consumption magnitude relation of the engine under N cylinder working, and the oil consumption magnitude relation is engine speed, starts
The corresponding relationship of machine torque and oil consumption；
By the torque in oil consumption magnitude relation, respectively multiplied by 1/N, 2/N, 3/N ..., 1, and by the oil in the oil consumption magnitude relation
Consumption, respectively multiplied by 1/N, 2/N, 3/N ..., 1, obtain the engine 1 cylinder working, 2 cylinder workings ..., N cylinder working
Under oil consumption magnitude relation；
According to the engine speed and engine torque in oil consumption magnitude relation in every group of data, engine power is calculated, and
By the oil consumption in every group of data divided by the engine power being calculated, rate of fuel consumption is obtained；
The corresponding relationship between engine speed, engine torque and the rate of fuel consumption that is calculated is established, described start is obtained
Machine 1 cylinder working, 2 cylinder workings ..., the rate of fuel consumption relationship under N cylinder working.
4. method according to any one of claims 1 to 3, which is characterized in that the fuel delivery under each operation cylinder number closes
The calculating process of system, comprising:
Engine N cylinder working is controlled, the N is total configuration cylinder number of present engine；
Test obtains fuel feeding magnitude relation of the engine under N cylinder working；
By torque of the engine in the fuel feeding magnitude relation under N cylinder working, respectively multiplied by 1/N, 2/N, 3/N ..., 1, obtain
To the engine 1 cylinder working, 2 cylinder workings ..., the fuel feeding magnitude relation under N cylinder working.
5. a kind of engine Injection Control device characterized by comprising
Parameter acquiring unit, for obtaining present engine revolving speed and current demand total torque；
Rate of fuel consumption computing unit obtains described under each operation cylinder number for combining the rate of fuel consumption relationship under each operation cylinder number
Present engine revolving speed and the corresponding rate of fuel consumption of the current demand total torque, the rate of fuel consumption relationship are engine speed, hair
The corresponding relationship of motivation torque and rate of fuel consumption；
Cylinder number determination unit is run, for from obtained rate of fuel consumption, determining the corresponding operation cylinder number of mimimum fuel consumption rate；
Fuel delivery determination unit, for obtaining institute in conjunction with the fuel feeding magnitude relation under the corresponding operation cylinder number of the mimimum fuel consumption rate
State present engine revolving speed and the corresponding fuel delivery of the current demand total torque, the fuel feeding magnitude relation be engine torque,
The corresponding relationship of engine speed and fuel delivery；
Control unit is run, is the corresponding operation cylinder number of the mimimum fuel consumption rate for configuring engine ejection cylinder number, and according to
Obtain fuel delivery control fuel injector oil spout.
6. device according to claim 5, which is characterized in that further include: the first rate of fuel consumption relationship computing unit, for controlling
Engine processed distinguish 1 cylinder working, 2 cylinder workings ..., N cylinder working, the N is total configuration cylinder number of present engine, is surveyed respectively
Examination obtain the engine 1 cylinder working, 2 cylinder workings ..., the rate of fuel consumption relationship under N cylinder working.
7. device according to claim 5, which is characterized in that further include: the second rate of fuel consumption relationship computing unit is used for
Engine N cylinder working is controlled, the N is total configuration cylinder number of present engine；
Test obtains oil consumption magnitude relation of the engine under N cylinder working, and the oil consumption magnitude relation is engine speed, starts
The corresponding relationship of machine torque and oil consumption；
By the torque in oil consumption magnitude relation, respectively multiplied by 1/N, 2/N, 3/N ..., 1, and by the oil in the oil consumption magnitude relation
Consumption, respectively multiplied by 1/N, 2/N, 3/N ..., 1, obtain the engine 1 cylinder working, 2 cylinder workings ..., N cylinder working
Under oil consumption magnitude relation；
According to the engine speed and engine torque in oil consumption magnitude relation in every group of data, engine power is calculated, and
By the oil consumption in every group of data divided by the engine power being calculated, rate of fuel consumption is obtained；
The corresponding relationship between engine speed, engine torque and the rate of fuel consumption that is calculated is established, described start is obtained
Machine 1 cylinder working, 2 cylinder workings ..., the rate of fuel consumption relationship under N cylinder working.
8. the device according to claim 5~7, which is characterized in that further include: fuel feeding magnitude relation computing unit is used for
Engine N cylinder working is controlled, the N is total configuration cylinder number of present engine；
Test obtains fuel feeding magnitude relation of the engine under N cylinder working；
By torque of the engine in the fuel feeding magnitude relation under N cylinder working, respectively multiplied by 1/N, 2/N, 3/N ..., 1, obtain
To the engine 1 cylinder working, 2 cylinder workings ..., the fuel feeding magnitude relation under N cylinder working.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113250836A (en) * | 2021-06-07 | 2021-08-13 | 一汽解放汽车有限公司 | Engine control method, engine control device, computer equipment and storage medium |
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