CN107489552A - Fuel injection control method, device, system and vehicle - Google Patents
Fuel injection control method, device, system and vehicle Download PDFInfo
- Publication number
- CN107489552A CN107489552A CN201611141719.2A CN201611141719A CN107489552A CN 107489552 A CN107489552 A CN 107489552A CN 201611141719 A CN201611141719 A CN 201611141719A CN 107489552 A CN107489552 A CN 107489552A
- Authority
- CN
- China
- Prior art keywords
- engine
- air inflow
- fuel injection
- flow
- flow rate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 63
- 238000002347 injection Methods 0.000 title claims abstract description 58
- 239000007924 injection Substances 0.000 title claims abstract description 58
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000000605 extraction Methods 0.000 claims abstract description 46
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 42
- 239000001301 oxygen Substances 0.000 claims abstract description 42
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 42
- 238000001514 detection method Methods 0.000 claims abstract description 23
- 239000002699 waste material Substances 0.000 claims abstract description 12
- 239000007789 gas Substances 0.000 claims description 27
- 239000002912 waste gas Substances 0.000 claims description 5
- 238000012360 testing method Methods 0.000 claims description 4
- 238000007689 inspection Methods 0.000 claims description 2
- 230000008450 motivation Effects 0.000 claims description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 6
- 229910002091 carbon monoxide Inorganic materials 0.000 description 6
- 238000012937 correction Methods 0.000 description 6
- 150000002430 hydrocarbons Chemical class 0.000 description 6
- 239000008246 gaseous mixture Substances 0.000 description 5
- 238000002156 mixing Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- -1 oxonium ion Chemical class 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 230000002000 scavenging effect Effects 0.000 description 2
- 229910052726 zirconium Inorganic materials 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- DOTMOQHOJINYBL-UHFFFAOYSA-N molecular nitrogen;molecular oxygen Chemical compound N#N.O=O DOTMOQHOJINYBL-UHFFFAOYSA-N 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/30—Controlling fuel injection
-
- 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
- F02D41/1445—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 related to the exhaust flow
-
- 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
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/18—Circuit arrangements for generating control signals by measuring intake air flow
-
- 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
This disclosure relates to a kind of fuel injection control method, device, system and vehicle.The control method includes：Obtain the charge flow rate and engine speed of engine；Obtain the extraction flow of engine；According at least to the charge flow rate and the extraction flow, the air inflow in cylinder is determined；Obtain the detection data for the oxygen concentration sensor being arranged in the waste pipe road；According to the air inflow, the detection data and the engine speed, target distributive value is determined；Atomizer is controlled to perform operated fuel injection according to the target distributive value.Thus, it is possible to accurately know the air inflow in cylinder, so as to be accurately controlled the distributive value of engine, control accuracy is improved, reduces delivery temperature, reduces exhaust emissions.
Description
Technical field
This disclosure relates to Injection Control field, in particular it relates to a kind of fuel injection control method, device, system and vehicle.
Background technology
In order to optimize gasoline engine inlet-air, using continuous variable inlet and outlet valve timing (VTT) system, different
Under engine operation condition, using different VTT control strategies.For example, in vehicle start, low speed high load working condition region, it is
Sufficient power is provided, valve overlap can be increased, charge flow rate and extraction flow is improved, reduces cylinder temperature, so as to carrying
The dynamic property of high engine.
Existing petrol engine fuel injection control method detects the air inflow of engine first, is determined according to chemically correct fuel
Required fuel injection amount, Closed-cycle correction control is then carried out by oxygen concentration sensor.After vehicle carries out scavenging, largely
Fresh air can be flowed into gas extraction system so that the accuracy of detection of air inflow declines.So, the control of Engine Injection Mass will
Not precisely, the power of engine operating, increase oil consumption are reduced and, it is easy to cause that delivery temperature is higher, exhaust emissions transfinites
Problem.
The content of the invention
The purpose of the disclosure be in the prior art due in cylinder actual air inlet measurement it is not accurate and can not accurately control
The problem of distributive value processed, there is provided a kind of fuel injection control method, device, system and vehicle.
To achieve these goals, the disclosure provides a kind of fuel injection control method, and this method includes：Obtain entering for engine
Throughput and engine speed；Obtain the extraction flow of engine；According at least to the charge flow rate and the extraction flow, really
Determine the air inflow in cylinder；Obtain the testing number for the oxygen concentration sensor being arranged in the waste pipe road
According to；According to the air inflow, the detection data and the engine speed, target distributive value is determined；Sprayed according to the target
Fuel-flow control atomizer performs operated fuel injection.
Alternatively, the extraction flow for obtaining engine, including：By the exhaust outlet and the institute that are arranged at the engine
The exhaust flow-meter between oxygen concentration sensor is stated to obtain the extraction flow of engine.
Alternatively, it is described according at least to the charge flow rate and the extraction flow, determine the air inlet in cylinder
Amount, including：According to the engine speed and vehicle discharge capacity, it is determined that the exhaust gas flow from engine discharge；According to described
Charge flow rate, the extraction flow and the exhaust gas flow, determine the air inflow in the cylinder.
Alternatively, it is described according to the charge flow rate, the extraction flow and the exhaust gas flow, determine the engine
Air inflow in cylinder, including：
M=Min-Mex+Mf
Wherein, M represents the air inflow；MinRepresent the charge flow rate；MexRepresent the extraction flow；MfDescribed in expression
Exhaust gas flow.
Alternatively, it is described according to the air inflow, the detection data and engine speed, determine target oil spout
Amount, including：According to the air inflow and the engine speed, the basic fuel injection amount of engine is determined；According to the testing number
According to being modified to the basic fuel injection amount, to obtain the target distributive value.
The disclosure also provides a kind of Injection Control device, and the device includes：First acquisition module, for obtaining engine
Charge flow rate and engine speed；Second acquisition module, for obtaining the extraction flow of engine；First determining module, is used for
According at least to the charge flow rate and the extraction flow, the air inflow in cylinder is determined；3rd acquisition module, is used for
Obtain the detection data for the oxygen concentration sensor being arranged in the waste pipe road；Second determining module, for root
According to the air inflow, the detection data and the engine speed, target distributive value is determined；Control module, for according to institute
State target distributive value control atomizer and perform operated fuel injection.
Alternatively, second acquisition module is used to pass with the oxygen concentration by being arranged at the exhaust outlet of the engine
Exhaust flow-meter between sensor obtains the extraction flow of engine.
Alternatively, first determining module includes：First determination sub-module, for according to the engine speed and car
Discharge capacity, it is determined that the exhaust gas flow from engine discharge；Second determination sub-module, for according to the charge flow rate, institute
Extraction flow and the exhaust gas flow are stated, determines the air inflow in the cylinder.
Alternatively, second determination sub-module is used for according to the charge flow rate, the extraction flow and the waste gas
Flow, the air inflow in the cylinder is determined by below equation：
M=Min-Mex+Mf
Wherein, M represents the air inflow；MinRepresent the charge flow rate；MexRepresent the extraction flow；MfDescribed in expression
Exhaust gas flow.
Alternatively, second determining module includes：Basic fuel injection amount determination sub-module, for according to the air inflow and
The engine speed, determine the basic fuel injection amount of engine；Target distributive value determination sub-module, for according to the testing number
According to being modified to the basic fuel injection amount, to obtain the target distributive value.
The disclosure also provides a kind of fuel injection control system, and the system includes：Inlet air flow gauge, with first acquisition module
Connection, for detecting the charge flow rate of engine；Oxygen concentration sensor, it is arranged in waste pipe road, with described
Three acquisition modules connect, for detecting the oxygen concentration data in being vented；Exhaust flow-meter, it is arranged at the exhaust outlet of the engine
Between the oxygen concentration sensor, one end is connected with the oxygen concentration sensor, and the other end connects with second acquisition module
Connect, for detecting the extraction flow of engine；The Injection Control device that the disclosure is provided.
The disclosure also provides a kind of vehicle of the fuel injection control system provided including the disclosure.
The technical scheme provided by this disclosed embodiment can include the following benefits：By the air inlet for obtaining engine
Flow and extraction flow, it may be determined that the air inflow in cylinder, then in conjunction with oxygen concentration sensor detection data and
Engine speed, target distributive value is determined, and control atomizer to perform operated fuel injection according to the target distributive value.Pass through the technology
It scheme, can accurately know the air inflow in cylinder, so as to be accurately controlled the distributive value of engine, improve control essence
Degree, delivery temperature is reduced, reduce exhaust emissions.
Other feature and advantage of the disclosure will be described in detail in subsequent specific embodiment part.
Brief description of the drawings
Accompanying drawing is for providing further understanding of the disclosure, and a part for constitution instruction, with following tool
Body embodiment is used to explain the disclosure together, but does not form the limitation to the disclosure.In the accompanying drawings：
Fig. 1 is a kind of flow chart of fuel injection control method according to an exemplary embodiment.
Fig. 2 is a kind of block diagram of Injection Control device according to an exemplary embodiment.
Fig. 3 is a kind of schematic diagram of fuel injection control system according to an exemplary embodiment.
Embodiment
The embodiment of the disclosure is described in detail below in conjunction with accompanying drawing.It should be appreciated that this place is retouched
The embodiment stated is merely to illustrate and explained the disclosure, is not limited to the disclosure.
Fig. 1 is a kind of flow chart of fuel injection control method according to an exemplary embodiment.As shown in figure 1, the party
Method can include：
In a step 101, the charge flow rate and engine speed of engine are obtained.
In a step 102, the extraction flow of engine is obtained.
In the disclosure, an inlet air flow gauge can be set at the air inlet of the air inlet pipe of engine, for detecting
The charge flow rate of engine.Engine speed can be detected by engine speed sensor.In waste pipe road
One oxygen concentration sensor can be set, for detecting the content of oxygen in exhaust.Furthermore it is possible in the row of waste pipe
One exhaust flow-meter is set between gas port and oxygen concentration sensor, for detecting the extraction flow of engine.
In step 103, according to charge flow rate and extraction flow, the air inflow in cylinder is determined.
In the disclosure, the waste gas of engine discharge can include carbon monoxide (CO), hydrocarbon (HC) and nitrogen oxygen
Compound (NOx) etc..The gas of engine discharge can also include fresh air, after scavenging, have substantial amounts of fresh air
Flow into gas extraction system.Therefore, the extraction flow can include exhaust gas flow and fresh air flow.
In one embodiment, the air inflow in cylinder can be determined in the following manner.Above-mentioned steps 103
It can include：
First, according to engine speed and vehicle discharge capacity, it is determined that the exhaust gas flow from engine discharge.
Illustratively, the exhaust gas flow of engine discharge can be determined by below equation (1)：
Wherein, MfRepresent the exhaust gas flow；V represents the vehicle discharge capacity；N represents the engine speed；Δ t is represented
The time interval of engine oil spout twice.
Next, according to charge flow rate, extraction flow and exhaust gas flow, the air inflow in cylinder is determined.
Illustratively, the air inflow in cylinder can be determined by below equation (2)：
M=Min-Mex+Mf (2)
Wherein, M represents the air inflow；MinRepresent the charge flow rate；MexRepresent the extraction flow；MfDescribed in expression
Exhaust gas flow.
At step 104, the detection data for the oxygen concentration sensor being arranged in waste pipe road are obtained.
In step 105, according to air inflow, detection data and engine speed, target distributive value is determined.
In the disclosure, in order to reduce exhaust pollution, triple mode catalytic converter can be provided with the engine.Due to hair
Once the air-fuel ratio deviation theory air-fuel ratio of the mixed gas in motivation cylinder, three-way catalyst is to carbon monoxide (CO), hydrocarbon
Compound (HC) and the detergent power of oxynitrides (NOx) will drastically decline, so, can be on waste pipe road
One oxygen concentration sensor of middle installation.The detection data of the oxygen concentration sensor can include the content of oxygen in exhaust, be characterized as
Voltage signal, when actual mixing ratio is less than chemically correct fuel, i.e., when engine is operated with denseer gaseous mixture, oxygen concentration sensing
Device is to control unit ECU output HIGH voltage signals；When actual mixing ratio is more than chemically correct fuel, i.e., engine is mixed with diluter
When conjunction fate turns, oxygen concentration sensor exports low voltage signal to control unit ECU.
After the detection data of oxygen concentration sensor are got, with reference to air inflow and engine speed, it may be determined that target
Distributive value.
In one embodiment, target distributive value can be determined in the following manner.Above-mentioned steps 105 can wrap
Include：
First, according to air inflow and engine speed, the basic fuel injection amount of engine is determined.
In the disclosure, in engine operating, basic fuel injection amount can be determined according to air inflow and engine speed.
Illustratively, the basic fuel injection amount of engine can be determined by below equation (3)：
Wherein, MjThe basic fuel injection amount is represented, M represents the air inflow；N represents the engine speed；C represents ratio
Example constant, it is the inverse of chemically correct fuel.
Next, according to detection data, basic fuel injection amount is modified, to obtain target distributive value.
In the disclosure, oxygen concentration sensor can be used for the Closed-cycle correction control of basic fuel injection amount.When oxygen concentration senses
After voltage signal is sent to control unit ECU by device, the increase and decrease of atomizer distributive value is controlled by ECU, so as to by the sky of gaseous mixture
Combustion is than controlling near theoretical value, in such manner, it is possible to lift hydrocarbon (HC), carbon monoxide (CO) and the nitrogen oxidation in exhaust
The pollutant transformation efficiencies such as compound (NOx), it can farthest convert and purification discharges pollutants.
In one embodiment, in Closed-cycle correction control process, when actual mixing ratio is less than chemically correct fuel, row
Anoxic in gas, oxonium ion movement is very fast in the zirconium pipe of oxygen concentration sensor, and produces 0.8-1V or so high voltage signal, oxygen
Concentration sensor exports the high voltage signal to control unit ECU, and now, ECU control atomizers reduce basic fuel injection amount；Work as reality
When border air-fuel ratio is more than chemically correct fuel, there is certain oxygen molecule in waste gas, weaken the locomotivity of oxonium ion in zirconium pipe, oxygen
Concentration sensor only produces about 0.1V low voltage signal, and oxygen concentration sensor exports the low voltage signal to control unit ECU,
Now, ECU controls atomizer increase basic fuel injection amount.
According to detection data, basic fuel injection amount is modified, to obtain target distributive value.
Illustratively, target distributive value can be obtained by below equation (4)：
Mp=Mj×k+h (4)
Wherein, MpRepresent the target distributive value；MjThe basic fuel injection amount is represented, h is represented by the oxygen concentration sensor
Detection data caused by voltage correction amount；K represents correction factor, can be according to intake air temperature, environment temperature, engine cool
The operating parameters such as liquid temperature degree, atmospheric pressure, height above sea level and idling operation, accelerating mode, full load mode determine.
In step 106, atomizer is controlled to perform operated fuel injection according to target distributive value.
In the disclosure, in engine operating, if gaseous mixture is denseer, actual mixing ratio is less than chemically correct fuel, oxygen
The output HIGH voltage signal of concentration sensor, ECU control atomizers reduce distributive value, make gaseous mixture gradually thinning, actual air-fuel
Than increase；When actual mixing ratio is increased to more than chemically correct fuel, the output voltage of oxygen concentration sensor declines rapidly, i.e., to
ECU exports low voltage signal, ECU control atomizer increase distributive values, gaseous mixture is gradually thickened, up to enriching to actual air-fuel
Rise rapidly again than the output voltage less than chemically correct fuel, oxygen concentration sensor, control unit ECU controls reduction to spray again
Oil mass, closure Correction and Control are so circularly carried out.So, after atomizer is with target distributive value oil spout, return above-mentioned
Step 101.
The technical scheme provided by this disclosed embodiment can include the following benefits：By the air inlet for obtaining engine
Flow and extraction flow, it may be determined that the air inflow in cylinder, then in conjunction with oxygen concentration sensor detection data and
Engine speed, target distributive value is determined, and control atomizer to perform operated fuel injection according to the target distributive value.Pass through the technology
It scheme, can accurately know the air inflow in cylinder, so as to be accurately controlled the distributive value of engine, improve control essence
Degree, delivery temperature is reduced, reduce exhaust emissions.
Fig. 2 is a kind of block diagram of Injection Control device according to an exemplary embodiment.As shown in Fig. 2 the device
Including：First acquisition module 201, for obtaining the charge flow rate and engine speed of engine；Second acquisition module 202, use
In the extraction flow for obtaining engine；First determining module 203, for the inlet air flow got according to the first acquisition module 201
The extraction flow that amount and the second acquisition module 202 are got, determines the air inflow in cylinder；3rd acquisition module 204,
For obtaining the detection data for the oxygen concentration sensor being arranged in the waste pipe road；Second determining module 205,
The detection data and got for the air inflow that is got according to the first determining module 203, the 3rd acquisition module 204
The engine speed that one acquisition module 201 is got, determines target distributive value；Control module 206, for determining mould according to second
The target distributive value control atomizer that block 205 determines performs operated fuel injection.
Alternatively, second acquisition module 202 is used for dense by the exhaust outlet and the oxygen that are arranged at the engine
Exhaust flow-meter between degree sensor obtains the extraction flow of engine.
Alternatively, first determining module 203 includes：First determination sub-module, for according to the engine speed
With vehicle discharge capacity, it is determined that from the engine discharge exhaust gas flow；Second determination sub-module, for according to the inlet air flow
Amount, the extraction flow and the exhaust gas flow, determine the air inflow in the cylinder.
Alternatively, second determination sub-module is used for according to the charge flow rate, the extraction flow and the waste gas
Flow, the air inflow in the cylinder is determined by below equation：
M=Min-Mex+Mf
Wherein, M represents the air inflow；MinRepresent the charge flow rate；MexRepresent the extraction flow；MfDescribed in expression
Exhaust gas flow.
Alternatively, second determining module 205 includes：Basic fuel injection amount determination sub-module, for according to the air inlet
Amount and the engine speed, determine the basic fuel injection amount of engine；Target distributive value determination sub-module, for according to the inspection
Data are surveyed, the basic fuel injection amount are modified, to obtain the target distributive value.
Fig. 3 is a kind of schematic diagram of fuel injection control system according to an exemplary embodiment.As shown in figure 3, this is
System includes：Inlet air flow gauge 210, for detecting the charge flow rate of engine；Oxygen concentration sensor 230, is arranged on engine
In gas exhaust piping, for detecting the oxygen concentration data in being vented；Exhaust flow-meter 220, it is arranged at the exhaust outlet of the engine
Between the oxygen concentration sensor 230, for detecting the extraction flow of engine；Above-mentioned Injection Control device 200.
The disclosure also provides a kind of vehicle of the above-mentioned fuel injection control system provided including the disclosure.
The preferred embodiment of the disclosure is described in detail above in association with accompanying drawing, still, the disclosure is not limited to above-mentioned reality
The detail in mode is applied, in the range of the technology design of the disclosure, a variety of letters can be carried out to the technical scheme of the disclosure
Monotropic type, these simple variants belong to the protection domain of the disclosure.
It is further to note that each particular technique feature described in above-mentioned embodiment, in not lance
In the case of shield, it can be combined by any suitable means.In order to avoid unnecessary repetition, the disclosure to it is various can
The combination of energy no longer separately illustrates.
In addition, it can also be combined between a variety of embodiments of the disclosure, as long as it is without prejudice to originally
Disclosed thought, it should equally be considered as disclosure disclosure of that.
Claims (10)
1. a kind of fuel injection control method, it is characterised in that methods described includes：
Obtain the charge flow rate and engine speed of engine；
Obtain the extraction flow of engine；
According at least to the charge flow rate and the extraction flow, the air inflow in cylinder is determined；
Obtain the detection data for the oxygen concentration sensor being arranged in the waste pipe road；
According to the air inflow, the detection data and the engine speed, target distributive value is determined；
Atomizer is controlled to perform operated fuel injection according to the target distributive value.
2. according to the method for claim 1, it is characterised in that the extraction flow for obtaining engine, including：
Started by the exhaust flow-meter being arranged between the exhaust outlet of the engine and the oxygen concentration sensor to obtain
The extraction flow of machine.
3. according to the method for claim 1, it is characterised in that described according at least to the charge flow rate and the exhaust stream
Amount, determines the air inflow in cylinder, including：
According to the engine speed and vehicle discharge capacity, it is determined that the exhaust gas flow from engine discharge；
According to the charge flow rate, the extraction flow and the exhaust gas flow, the air inflow in the cylinder is determined.
4. according to the method for claim 3, it is characterised in that it is described according to the charge flow rate, the extraction flow and
The exhaust gas flow, the air inflow in the cylinder is determined, including：
M=Min-Mex+Mf
Wherein, M represents the air inflow；MinRepresent the charge flow rate；MexRepresent the extraction flow；MfRepresent the waste gas
Flow.
5. according to the method any one of claim 1-4, it is characterised in that described according to the air inflow, the inspection
Data and the engine speed are surveyed, determines target distributive value, including：
According to the air inflow and the engine speed, the basic fuel injection amount of engine is determined；
According to the detection data, the basic fuel injection amount is modified, to obtain the target distributive value.
6. a kind of Injection Control device, it is characterised in that described device includes：
First acquisition module, for obtaining the charge flow rate and engine speed of engine；
Second acquisition module, for obtaining the extraction flow of engine；
First determining module, for according at least to the charge flow rate and the extraction flow, determining entering in cylinder
Tolerance；
3rd acquisition module, for obtaining the testing number for the oxygen concentration sensor being arranged in the waste pipe road
According to；
Second determining module, for according to the air inflow, the detection data and the engine speed, determining target oil spout
Amount；
Control module, for controlling atomizer to perform operated fuel injection according to the target distributive value.
7. device according to claim 6, it is characterised in that first determining module includes：
First determination sub-module, for according to the engine speed and vehicle discharge capacity, it is determined that from the useless of engine discharge
Throughput；
Second determination sub-module, for according to the charge flow rate, the extraction flow and the exhaust gas flow, determining the hair
Air inflow in motivation cylinder.
8. the device according to claim 6 or 7, it is characterised in that second determining module includes：
Basic fuel injection amount determination sub-module, for according to the air inflow and the engine speed, determining the basic of engine
Distributive value；
Target distributive value determination sub-module, for according to the detection data, being modified to the basic fuel injection amount, to obtain
The target distributive value.
A kind of 9. fuel injection control system, it is characterised in that including：
Inlet air flow gauge, for detecting the charge flow rate of engine；
Oxygen concentration sensor, it is arranged in waste pipe road；
Exhaust flow-meter, it is arranged between the exhaust outlet of the engine and the oxygen concentration sensor, for detecting engine
Extraction flow；
Injection Control device according to any one of claim 6-8.
A kind of 10. vehicle of the fuel injection control system including described in claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611141719.2A CN107489552B (en) | 2016-12-12 | 2016-12-12 | Oil injection control method, device and system and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611141719.2A CN107489552B (en) | 2016-12-12 | 2016-12-12 | Oil injection control method, device and system and vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107489552A true CN107489552A (en) | 2017-12-19 |
| CN107489552B CN107489552B (en) | 2020-09-18 |
Family
ID=60642438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611141719.2A Active CN107489552B (en) | 2016-12-12 | 2016-12-12 | Oil injection control method, device and system and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107489552B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108331672A (en) * | 2018-01-31 | 2018-07-27 | 安徽江淮汽车集团股份有限公司 | Engine part testing equipment |
| CN110469416A (en) * | 2019-09-29 | 2019-11-19 | 潍柴动力股份有限公司 | A kind of engine control, control device and engine |
| CN113978209A (en) * | 2021-10-27 | 2022-01-28 | 合肥正浩机械科技有限公司 | Oxygen generation and supply system for high-altitude fuel-powered automobile |
| CN114607515A (en) * | 2022-03-17 | 2022-06-10 | 潍柴动力股份有限公司 | Engine fuel injection control method, device, equipment, storage medium and program product |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102312742A (en) * | 2010-07-05 | 2012-01-11 | 本田技研工业株式会社 | Vehicle is with the fuel injection system of internal-combustion engine |
| CN104704219A (en) * | 2012-06-07 | 2015-06-10 | 标致·雪铁龙汽车公司 | Device for limiting oxygen content in exhaust gases of motor vehicle combustion engine |
| CN104895686A (en) * | 2015-05-07 | 2015-09-09 | 潍柴动力股份有限公司 | Method and system for determining oxygen concentration of exhaust gas of engine |
| EP2921680A1 (en) * | 2014-02-25 | 2015-09-23 | Mitsubishi Jidosha Kogyo K.K. | Apparatus for controlling in-cylinder fuel injection and port fuel injection amounts of an internal combustion engine |
| CN105736206A (en) * | 2016-03-29 | 2016-07-06 | 湖南大学 | Online detection method and device for cyclic fuel injection quantity of engine under variable working conditions |
-
2016
- 2016-12-12 CN CN201611141719.2A patent/CN107489552B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102312742A (en) * | 2010-07-05 | 2012-01-11 | 本田技研工业株式会社 | Vehicle is with the fuel injection system of internal-combustion engine |
| CN104704219A (en) * | 2012-06-07 | 2015-06-10 | 标致·雪铁龙汽车公司 | Device for limiting oxygen content in exhaust gases of motor vehicle combustion engine |
| EP2921680A1 (en) * | 2014-02-25 | 2015-09-23 | Mitsubishi Jidosha Kogyo K.K. | Apparatus for controlling in-cylinder fuel injection and port fuel injection amounts of an internal combustion engine |
| CN104895686A (en) * | 2015-05-07 | 2015-09-09 | 潍柴动力股份有限公司 | Method and system for determining oxygen concentration of exhaust gas of engine |
| CN105736206A (en) * | 2016-03-29 | 2016-07-06 | 湖南大学 | Online detection method and device for cyclic fuel injection quantity of engine under variable working conditions |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108331672A (en) * | 2018-01-31 | 2018-07-27 | 安徽江淮汽车集团股份有限公司 | Engine part testing equipment |
| CN110469416A (en) * | 2019-09-29 | 2019-11-19 | 潍柴动力股份有限公司 | A kind of engine control, control device and engine |
| CN113978209A (en) * | 2021-10-27 | 2022-01-28 | 合肥正浩机械科技有限公司 | Oxygen generation and supply system for high-altitude fuel-powered automobile |
| CN114607515A (en) * | 2022-03-17 | 2022-06-10 | 潍柴动力股份有限公司 | Engine fuel injection control method, device, equipment, storage medium and program product |
| CN114607515B (en) * | 2022-03-17 | 2023-01-06 | 潍柴动力股份有限公司 | Engine oil injection control method, device, equipment and storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107489552B (en) | 2020-09-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101949319B (en) | Ammonia storage set-point control for selective catalytic reduction applications | |
| JP4600469B2 (en) | Fuel property detection device and fuel property detection method | |
| US6826471B2 (en) | Method for determining nitrogen oxide content in internal combustion engine exhaust gases containing oxygen | |
| CN107489552A (en) | Fuel injection control method, device, system and vehicle | |
| US6438947B2 (en) | Method for adapting a raw NOx concentration value of an internal combustion engine operating with an excess of air | |
| US20110077818A1 (en) | Method and device for the diagnosis of an nox sensor for an internal combustion engine | |
| US20070131180A1 (en) | Water and/or alcohol water secondary injection system for diesel engines | |
| CN101737181B (en) | Method and system for controlling engine | |
| US20110094208A1 (en) | Method and device for controlling an exhaust gas post-treatment | |
| CN102444458A (en) | System and method for detecting low quality reductant and catalyst degradation in selective catalytic reduction systems | |
| CN112832891B (en) | Method and device for correcting concentration detection value of nitrogen oxide sensor | |
| KR20140135110A (en) | Method and device for operating exhaust gas recirculation of a spontaneous ignition in an internal combustion engine, in particular for a motor vehicle | |
| US6598470B2 (en) | Method for the testing of an exhaust gas recirculation system | |
| CN103375236A (en) | Method and device for testing the functionality of an NO oxidation catalyst | |
| US11060439B2 (en) | Catalyst deterioration diagnosis system and catalyst deterioration diagnosis method | |
| CN114019113B (en) | Motor vehicle exhaust dynamic monitoring method and device based on multimode data correction | |
| CN107664073A (en) | EGR rate computational methods, system and vehicle with low pressure EGR system | |
| CN102829837B (en) | Method, device and system for measurement of oil injection volume | |
| US20160103110A1 (en) | Engine nox model | |
| CN101949334A (en) | Four-stroke internal combustion engine combustion system and using method | |
| CN101725420B (en) | Method for determining cetane number CN of fuel | |
| CN101749135A (en) | Vehicle exhaust emission control technology | |
| US20070157599A1 (en) | Method for operating a compression-ignition internal combustion engine | |
| US7527034B2 (en) | Method for operating a compression ignition internal combustion engine | |
| CN108612593A (en) | A kind of discharge pollutants processing system and method applied to petrol engine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Fuel injection control method, device, system and vehicle Effective date of registration: 20211213 Granted publication date: 20200918 Pledgee: BEIJING AUTOMOTIVE GROUP Co.,Ltd. Pledgor: Borgward Automotive (China) Co., Ltd. Registration number: Y2021990001167 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20231201 Granted publication date: 20200918 Pledgee: BEIJING AUTOMOTIVE GROUP Co.,Ltd. Pledgor: Beijing baowo Automobile Co.,Ltd.|Borgward Automotive (China) Co., Ltd. Registration number: Y2021990001167 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right |