CN105358817B - For calculating the System and method for of fuel injector working time using fuel system pressure prediction - Google Patents
For calculating the System and method for of fuel injector working time using fuel system pressure prediction Download PDFInfo
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- CN105358817B CN105358817B CN201480038368.5A CN201480038368A CN105358817B CN 105358817 B CN105358817 B CN 105358817B CN 201480038368 A CN201480038368 A CN 201480038368A CN 105358817 B CN105358817 B CN 105358817B
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- 239000000446 fuel Substances 0.000 title claims abstract description 333
- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000002347 injection Methods 0.000 claims abstract description 27
- 239000007924 injection Substances 0.000 claims abstract description 27
- 238000009826 distribution Methods 0.000 claims abstract description 15
- 238000002485 combustion reaction Methods 0.000 claims description 24
- 230000008569 process Effects 0.000 claims description 11
- 230000033001 locomotion Effects 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 239000007921 spray Substances 0.000 claims description 5
- 230000004044 response Effects 0.000 claims description 4
- 238000004364 calculation method Methods 0.000 claims description 3
- GOLXNESZZPUPJE-UHFFFAOYSA-N spiromesifen Chemical compound CC1=CC(C)=CC(C)=C1C(C(O1)=O)=C(OC(=O)CC(C)(C)C)C11CCCC1 GOLXNESZZPUPJE-UHFFFAOYSA-N 0.000 claims description 3
- 238000003860 storage Methods 0.000 description 10
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- 230000008859 change Effects 0.000 description 7
- 230000015654 memory Effects 0.000 description 5
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- 230000003321 amplification Effects 0.000 description 3
- 230000010354 integration Effects 0.000 description 3
- 238000003199 nucleic acid amplification method Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002828 fuel tank Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000037361 pathway Effects 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 210000001367 artery Anatomy 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011982 device technology Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 210000003462 vein Anatomy 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
- F02D41/38—Controlling fuel injection of the high pressure type
- F02D41/40—Controlling fuel injection of the high pressure type with means for controlling injection timing or duration
- F02D41/402—Multiple injections
-
- 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
- F02D2041/1412—Introducing closed-loop corrections characterised by the control or regulation method using a predictive controller
-
- 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
- F02D41/20—Output circuits, e.g. for controlling currents in command coils
- F02D2041/202—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit
- F02D2041/2055—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit with means for determining actual opening or closing time
-
- 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
- F02D2200/06—Fuel or fuel supply system parameters
- F02D2200/0602—Fuel pressure
-
- 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
- F02D2200/06—Fuel or fuel supply system parameters
- F02D2200/0602—Fuel pressure
- F02D2200/0604—Estimation of fuel pressure
-
- 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
- F02D2200/06—Fuel or fuel supply system parameters
- F02D2200/0618—Actual fuel injection timing or delay, e.g. determined from fuel pressure drop
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Landscapes
- Engineering & Computer Science (AREA)
- 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)
- Fuel-Injection Apparatus (AREA)
Abstract
The disclosure provides the System and method for for the running time for calculating fuel injector.The system can include one or more module being located in control system.The control system provides the pressure distribution in the fuel system of fuel under high pressure using fuel injector described in the information modeling and pre- direction finding that can be obtained before fuel injection signal is transferred to the fuel injector, and calculates the running time of the fuel injector using the information together with addition fuel command.
Description
The intersection of related application is quoted
This application claims entitled " the SYSTEM AND METHOD FOR FUEL INJECTOR submitted in July, 2013
ON-TIME CALCULATION USING FUEL SYSTEM PRESSURE PREDICTION (are used to utilize fuel system pressure
Power prediction calculate the fuel injector working time System and method for) ", U.S. Provisional Patent Application Serial No. 61/864,384
Priority, be specially hereby incorporated by by the complete disclosure quoted this application.
Technical field
This disclosure relates to the fuel injector of internal combustion engine and for calculating actual spray using fuel system pressure prediction
The System and method for penetrated the time and (be referred to as the working time).
Background technology
The amount for the fuel that fuel injector is ejected into combustion chamber be fuel system supply either rail pressure, cylinder pressure or
Chamber pressure and fuel injector keep the function at open interval (being referred to as the working time).It is determined that fired given expectation
The classical pathway of the fuel injector working time of doses and fuel system pressure is by the use of with being used as independent variable or parameter
Fuel system, the pressure of fuel rail or common rail and desired fuel quantity and as dependent variable fuel injector work when
Between predetermined two-dimensional look-up table.
Classical pathway facing challenges are：Pressure distribution in fuel system can demarcate or with reference to change relative to look-up table
Change, so as to change the actual volume of the fuel of delivering, actual total amount or quantity.The factor of pressure distribution, which may be changed, to be included
Pressure wave, engine speed in fuel system, fuel rail or common rail, it is designed as input rather than fuel system pressure and expectation
Fuel quantity function initial injection (SOI) and fuel system pressure set point change.
The content of the invention
In an embodiment of the disclosure, a kind of fuel assembly of engine include fuel reservoir and with institute
State at least one fuel injector of fuel reservoir fluid connection.The fuel injector configuration is into allowing fuel from described
The release position and forbid fuel to be moved between the closed position that the injector flows out that fuel injector flows out.The fuel
Component further comprises control system, and the control system includes being operatively coupled to the controller of the fuel injector.It is described
Controller is configured to receive at least one parameter of the fuel assembly.In the operating process of the engine, the control
Device be constructed to respond to the parameter regulation described in fuel injector be maintained at time quantum in the release position.
According to another embodiment of the disclosure, a kind of fuel assembly of engine includes：At least one fuel injector；
And the control system for the fuel assembly.The control system includes：Controller, the controller are configured to described in reception
At least one parameter of fuel assembly；The device for the time flowed for determining fuel from the fuel injector；For predicting
The device of the pressure distribution of fuel assembly described in the operating process of the engine；And for the operation in the engine
During flowed in response to the fuel distribution predicted for the fuel assembly to adjust fuel from the fuel injector
Time.
In the another exemplary embodiment of the disclosure, a kind of method for the fuel assembly for operating engine includes：Carry
For at least one fuel injector, the fuel injector receives the ginseng of the fuel assembly in the operating process of the engine
Number；And in the operating process of the engine, based on fuel assembly described in the parameter prediction of the fuel assembly
Pressure distribution.Methods described also includes：Fuel is calculated in the operating process of the engine to flow from the fuel injector
Time quantum；And correspondingly carry out fuel from the combustion to the fuel injector transmission in the operating process of the engine
The signal of the time quantum of material ejector flowing.
Check the detailed description according to following exemplary embodiment with reference to accompanying drawing, the advantage of embodiment of the present disclosure and
Feature can become apparent from.
Brief description of the drawings
Fig. 1 is the schematic diagram of the internal combustion engine of the first illustrative embodiments with reference to the disclosure.
Fig. 2 is the schematic diagram of a part for Fig. 1 engine.
Embodiment
Reference picture 1, showing for simplification is shown to according to a part for the internal combustion engine of the first illustrative embodiments of the disclosure
It is intended to, and is totally shown by 10.Engine 10 includes control system, and the control system produces fuel injection signal, fuel spray
Penetrate signal and be transferred to electric drive, fuel injection signal is exaggerated at the electric drive.Fuel injection signal is then passed to
Fuel injector, the fuel injector open nozzle or needle valve element to allow fuel passing through fuel injector to reach combustion chamber
In.In order to calculate the running time of fuel injector, control system, which utilizes, to be transferred to fuel spray in fuel injection signal
The information modeling and pre- direction finding fuel injector that are obtained before emitter provide the pressure distribution in the fuel system of fuel under high pressure.Control
System processed calculates the fuel injector working time using pressure model and addition fuel command.Available for the pressure in fuel system
The information of force modeling can include pumping instruction, fuel system setting value or desired fuel system pressure, from fuel system
Pressure measurement signal, altogether fuel rail or the size and fuel characteristic of reservoir.
Engine 10 includes：Engine body 12, the engine body include cluster engine 14 and are attached to cluster engine
14 cylinder head 16；Fuel system 18 and control system 20.Control system 20 is received from the sensing on engine 10
The signal of device, and control signal is transferred to the device on engine 10 to control the function of these devices.Engine sheet
Body 12 includes crank axle 22, multiple pistons 24 and multiple connecting rods 26.Piston 24 is positioned in past in multiple cylinders 28
Multiple motion, a piston 24 are positioned in a cylinder 28.One piston 24 is connected to crank axle by one connecting rod 26
22.As will be seen, the motion in the presence of combustion process of the piston 24 in engine 10 makes connecting rod 26 move crank axle 22.
Multiple fuel injectors 30 are located in cylinder head 16.Each fuel injector 30 is fluidly connected to combustion chamber 32,
Each combustion chamber is by a piston 24, cylinder head 16 and cylinder 28 in corresponding piston 24 and cylinder head 16
Between the part that extends formed.
Fuel system 18 provides fuel to injector 30, and then these fuel are ejected into by the action of fuel injector 30
In combustion chamber 32, so as to form one or more injection events.Fuel system 18 includes fuel circuit 34, accommodates the fuel of fuel
Case 36, the high pressure fuel pump 38 positioned in the downstream of fuel tank 36 along fuel circuit 34 and in the downstream of high pressure fuel pump 38 along fuel
The fuel reservoir or rail 40 that loop 34 positions.Although fuel reservoir or rail 40 are shown to individual unit or element, storage
Storage 40 can be distributed in the multiple element for transmitting or receiving fuel under high pressure, such as fuel injector 30, high pressure fuel pump 38
And fuel under high pressure is connected to any circuit of multiple element, passage, pipe, flexible pipe etc..Injector 30 receives to be store from fuel
The fuel of storage 40.Fuel system 18 is additionally may included in the entrance that the upstream of high pressure fuel pump 38 positions along fuel circuit 34 and measured
Valve 44, and it is included in one or more outlet non-return valves 46 that the downstream of high pressure fuel pump 38 positions along fuel circuit 34 to allow
From high pressure fuel pump 38 to the unidirectional The fuel stream of fuel reservoir 40.Although being not shown, can be positioned along fuel circuit 34
There are other elements.For example, can be in the downstream of entrance metering valve 44 and in the located upstream inlet non-return valve of high pressure fuel pump 38, Huo Zheke
Inlet non-return valve is attached in high pressure fuel pump 38.Entrance metering valve 44 has change or is cut to the combustion of high pressure fuel pump 38
The ability of stream, the The fuel stream to fuel reservoir 40 are thus cut off.Fuel circuit 34 makes fuel reservoir 40 be connected to combustion
Material ejector 30, controlled fuel quantity is then provided to combustion chamber 32.Fuel system 18 is additionally may included in fuel tank 36 and height
The low-pressure fuel pump 48 positioned between pressurized fuel pump 38 along fuel circuit 34.It is low before fuel is flowed in high pressure fuel pump 38
Pressurized fuel pump 48 makes fuel pressure increase to first pressure level.
Control system 20 can include controller or control module 50 and wire harness 52.The some aspects of the disclosure according to
Computer system or other can configuration processor orders hardware (for example, all-purpose computer, special-purpose computer, work station or
Other programmable data processing equipments) element to be performed sequence of movement description.It would be recognized that in each embodiment
In, can by special circuit (such as being connected with each other to perform the discrete logic gate of dedicated functions), by one or more processors
(such as one or more microprocessors, CPU (CPU) and/or application specific integrated circuit) or the group by the two
Close and perform various actions.For example, it can implement in hardware, software, firmware, middleware, microcode or these any combination
These embodiments.Order can perform the program code or code segment of necessary task, and can be stored in and such as deposit
In the machine readable media of storage media or other memories etc.Code segment can represent process, function, subprogram, program,
Any combination of routine, subroutine, module, software kit, class or order, data structure or program statement.Code segment can
So that by transmission and/or receive information, data, argument, parameter, either storage content is attached to another code segment or hard
Part circuit.
In addition, permanent machine readable media can be considered to be at such as solid-state memory, disk and accommodate appropriate meter
The CD of calculation machine command set (such as program module and data structure that computing device technology described herein can be made) it
Embodiment in the computer readable carrier of any tangible form of class.Computer-readable medium can include following form：Have
The electrical connection of one or more wire rods；Magnetic disk storage, cassette, tape or other magnetic storage devices, portable computing
Machine floppy disk, random access memory (RAM), read-only storage (ROM), Erasable Programmable Read Only Memory EPROM (for example, EPROM,
EEPROM either flash memories) or it is capable of other any tangible mediums of storage information.
It should be noted that the system of the disclosure be illustrated herein and be described as with perform specific function multiple module with
Unit.It should be understood that the function for having a definite purpose of being based only upon these modules and unit schematically shows these modules and unit,
Thus these modules must not represent specialized hardware or software with unit.Thus, these modules, unit and miscellaneous part
The hardware and/or software of actual execution its specific function described herein can be implemented as.Different parts it is various
Function can be combined or be separated into any manner hardware and/or software module, and separation or the group of these parts
Credit union is useful.Include but not limited to the input/output device of keyboard, display, pointing device etc. either I/O devices or
User interface can direct or through intermediary's I/O controllers and be attached to system.Therefore, many aspects of the disclosure can be with a variety of
Multi-form is implemented, and all these forms ought to be in the scope of the present disclosure.
Control system 20 can also include reservoir pressure sensor 54 and crank angle sensor.Although the quilt of sensor 54
It is described as pressure sensor, but sensor 54 can demarcate other dresses into the pressure signal for representing fuel pressure is provided
Put, for example, force cell, strain gauge or other devices.Crank angle sensor can be gear sensor 56, rotary Hall
Sensor 58 or can measure crank axle 22 the anglec of rotation other kinds of device.Control system 20 is come from using reception
Determine that combustion chamber receives fuel from the signal of reservoir pressure sensor 54 and crank angle sensor, then by identified burning
Room receives fuel and is used to analyze the signal received from reservoir pressure sensor 54.
Control module 50 can be electronic control unit or electronic control module (ECM), these electronic control units or
Person's electronic control module (ECM) can monitor engine 10 or the situation of the associated vehicle of engine 10 can be located.Control
Module 50 can be single processor, distributed processors, the electronics equivalent of processor or any combination of aforementioned components
And software, electronic memory, the look-up table etc. of fixation.Control module 50 can include digital circuit or analog circuit.Control
Molding block 50 can be connected to some parts of engine 10 by wire harness 52, but can also by include wireless system its
His means realize such connect.For example, control module 50 can be connected to entrance metering valve 44 and fuel injector 30, and
And provide control signal to entrance metering valve 44 and fuel injector 30.
When engine 10 operates, the burning in combustion chamber 32 causes piston 24 to move.The movement of piston 24 connects driving
The connecting rod 26 for being connected to crank axle 22 moves, and the movement of connecting rod 26 causes crank axle 22 in rotary moving.In order to contribute to engine 10
In combustion incident timing and other purposes, engine 10 measure crank axle 22 the anglec of rotation.Can be including main song
It is more with shaft pulley (not shown), engine flywheel (not shown), engine cam (not shown) or camshaft sheet
The anglec of rotation of individual position measurement crank axle 22.Can be with gear sensor 56, rotary Hall sensor 58 and by other
Technology measures the anglec of rotation of crank axle 22.The signal of the anglec of rotation (also referred to as degree in crank angle) of crank axle 22 is represented from gear
Sensor 56, rotary Hall sensor 58 or other devices are transferred to control system 20.
Crank axle 22 drives high pressure fuel pump 38 and low-pressure fuel pump 48.The action of low-pressure fuel pump 48, which promotes, carrys out spontaneous combustion
The fuel of hopper 36, and fuel is moved along fuel circuit 34 towards entrance metering valve 44.Fuel is from entrance metering valve 44 along combustion
Material loop 34 flows downstream to high pressure fuel pump 38 by inlet non-return valve (not shown).High pressure fuel pump 38 makes fuel along fuel
Outlet non-return valve 46 is passed through towards 40 downward downstream of fuel reservoir or rail in loop 34.Entrance metering valve 44 is received from control system
The signal of system 20, and it is operable to prevent The fuel stream to high pressure fuel pump 38.Entrance metering valve 44 can be proportioning valve, or
Can be can between release position and closed position fast modulation to adjust the switch valve for the fuel quantity for flowing through the valve.
Fuel pressure sensor 54 is connected with fuel reservoir 40, so as to detect or measure in fuel reservoir 40
Fuel pressure.Fuel pressure sensor 54 sends the signal of the fuel pressure indicated in fuel reservoir 40 to controller
50.Fuel reservoir 40 is connected to each fuel injector 30.Control system 20 provides control signal to fuel injector 30,
These control signals are that each fuel injector 30 determines such as operation duration of fuel injector 30 (working time) and each
The operating parameter of the quantity of addition fuel impulse in individual burning or injection events cycle etc, each fuel injector of this determination
The fuel quantity of 30 deliverings.
Fig. 2 is gone to, a part for engine 10 is shown.Control system 20 includes fuel injector pulses generation module 60.
Pulses generation module 60 receives various inputs, and using those input generations be transferred to driver 62 fuel injector pulse or
Person's signal, driver 62 are a parts for engine 10, and fuel injector pulse is exaggerated that can drive in driver 62
The actuator of fuel injector 30.Such amplification can be voltage, electric current or both sides amplification.Then, the combustion of amplification
Material ejector pulse is provided to fuel injector 30 and opened with order fuel injector 30, so as to provide fuel into combustion chamber
32。
Fuel injector pulses generation module 60 includes injector working time module 64, the injector working time module
The pulse width of fuel injection event is generated using various inputs or working time, pulse width or working time are defined
Into such cycle or interval, the cycle or interval are from nozzle or needle valve element (not shown) from one or multi-injector hole
(not shown) is removed to be moved with extending to nozzle or needle valve element at the time of allowing fuel to be flowed to from fuel injector in combustion chamber 32
Move at the time of close by the The fuel streams of injector holes.Fuel injector pulses generation module 60, which receives, performs clock signal
66, the execution clock signal is used to determine timing for the event in fuel injector pulses generation module 60.Fuel injector arteries and veins
Generation module 60 is rushed also to receive：Petrolift command signal FCmd；Fuel system pressure signal P, the fuel system pressure signal can be with
There is provided by reservoir pressure sensor 54；Pressure set points signal PSp, the pressure set points signal represents fuel rail or reservoir
Goal pressure in 40；And start jeting instruction SOICmd, this starts jeting instruction and initiates fuel injection event nozzle in other words
Or needle valve element is at the time of open, at the time of the moment can also be described as fuel injector 30 and start to open at.These signals
Each of can be provided by other modules in control system 20, but fuel system pressure signal can be directly by storing
Storage pressure sensor 54 provides.Although reservoir pressure sensor 54 is shown in fuel reservoir or rail 40,
Being can be from times that can be located in fuel circuit 34 at any high pressure spot and between high pressure fuel pump 38 and fuel injector 30
The pressure sensor of one opening position receives fuel system pressure signal, and foregoing fuel loop includes the high-pressure side of high pressure fuel pump 38
Locations of high pressure into fuel injector 30.
Signal FCmd、P、PSpAnd SOICmdEach of received by injector working time module 64.These signal quilts
Injector working time module 64 is used to calculating or determining the fuel injector working time.Injector working time module 64 is wrapped
Include pressure prediction model module 68, injector model module 70, summation module 72, integration module 74 and comparison module 76.Product
Sub-module 74 utilizes FCmdLimit original fuel injection device working time TOn, and original fuel injection device working time TOnMade
For input and signal FCmd、P、PSpAnd SOICmdPressure prediction model module 68 is provided to together, and module 68 is located at basis
Interior pressure prediction model determines the pressure vector P of estimatione.The pressure vector P of estimationeWith associated time vector teTogether
It is input into injector model module 70, it is using estimated by PeLower te(i) to te(i-1) fuel injector of second
The △ fuel quantities dF of injection produces a vector, wherein i=1 to teLength.△ fuel quantities dF can be expressed as equation (1)
Form.
DF=f (Pe, te) equation (1)
△ fuel quantities dF is provided to summation module 72.
Input vector or △ fuel quantities dF are added to and represent T by summation module 72OnInterval on to calculate the estimation of fuel
Measure FEst, it will be considered that TOnThe estimator F of delivery of fuelEst.The estimator F of fuelEstComparison module 76 is provided to, is being compared
In module 76, equation (2) and equation (3) are performed, wherein tol is to limit FEstWith FCmdBetween acceptable deviation it is predetermined
Tolerance level, so that it is determined that TOnCalculated value whether be acceptable.
FEst-FCmd>Tol equations (2)
FEst-FCmd<- tol equations (3)
The result of the comparison performed in equation (2) and equation (3) is sent to integration module 74.In integration module 74
In, if meeting the condition of equation (2), then be reduced by TOn.If meet the condition of equation (3), then be increased by
TOn.If TOnValue change, then perform pressure prediction model module 68, injector model module 70, summation module 72 again
And the process performed in comparison module 76, the condition until no longer meeting equation (2) and equation (3).If TOnIt is discontented
Sufficient equation (2) and the condition of equation (3), then TOnValue be considered as to have converged on stationary value.
Once TOnValue converge on stationary value, TOnWith SOICmdJust received by TTL pulse generation module 78, TTL pulse production
Raw module 78 is a part for fuel injector pulses generation module 60.TTL pulse generation module 78, which produces, can be transferred to fuel
Injector 30 is to control the signal of fuel injection event.Then, fuel injector pulse is passed to driver 62.Driver 62
By fuel injector pulse amplifying, then this exaggerated fuel injector pulse is passed to fuel injector 30.
Although the numerous embodiments of the disclosure have shown and described, it is to be appreciated that these embodiments are not limited to
This.One of ordinary skill in the art can change, modification and further apply these embodiments.Therefore, these are implemented
Mode is not limited to previously illustrated and described details, but also including all these changes and modification.
Claims (15)
1. a kind of fuel assembly for engine, the fuel assembly includes：
Fuel reservoir；
At least one fuel injector of the fuel reservoir is fluidly coupled to, the fuel injector is configured to allowing
Fuel from the release position that the fuel injector flows out and forbid fuel from the closed position that the fuel injector flows out it
Between move, each motion between the release position and the closed position limits fuel injection period, and described
Fuel injector is configured for multiple fuel injection periods；And
Control system, the control system have the controller for being operatively coupled to the fuel injector, and the controller is by structure
Cause to receive at least one parameter of the fuel assembly, wherein before each described fuel injection period, the control
System is configured to predict the pressure distribution of the fuel assembly as follows based at least one parameter：Determine the fuel stack
The estimated pressure of part, multiple fuel quantities are calculated based on the estimated pressure, estimation fuel quantity is calculated according to the multiple fuel quantity simultaneously
The estimation fuel quantity is adjusted into the fuel injection compared with predetermined tolerance amount, and in response to the pressure distribution
Device is maintained at the time quantum in the release position during each fuel injection period.
2. fuel assembly according to claim 1, the fuel assembly also includes petrolift, is operatively coupled to the fuel
The petrolift sensor of pump and the fuel reservoir sensor for being operatively coupled to the fuel reservoir, and the control
System is configured to receive the signal from the petrolift sensor and the fuel reservoir sensor, to predict the combustion
Expect the pressure distribution of component.
3. fuel assembly according to claim 1, wherein, at least one parameter includes fuel pump signal, fuel stack
At least one of part pressure signal, pressure set points signal and beginning injection signal.
4. fuel assembly according to claim 1, wherein, the control system further comprises：
It is configured to determine the module of the estimated pressure of the fuel assembly；And
It is configured to calculate the module of the multiple fuel quantity for the fuel assembly.
5. fuel assembly according to claim 4, wherein, the control system includes being configured to according to the multiple combustion
Doses calculates the estimation fuel quantity and the module by the estimation fuel quantity compared with predetermined fuel quantity.
6. fuel assembly according to claim 1, wherein, the control system includes being configured to the fuel injection
Device sends signal and adjusts the module for the time quantum that the fuel injector is maintained in the release position.
7. a kind of fuel assembly of engine, the fuel assembly include：
At least one fuel injector；And
For the control system of the fuel assembly, the control system includes：
Controller, the controller are configured to receive at least one parameter of the fuel assembly；
First module, first module are used to determine the time that fuel flows from the fuel injector；
Second module, second module are used for the pressure distribution for predicting the fuel assembly during spray fuel, second mould
Block is configured to determine the estimated pressure of the fuel assembly, multiple fuel quantities is calculated based on the estimated pressure, according to described more
Individual fuel quantity calculates estimation fuel quantity and by the estimation fuel quantity compared with predetermined tolerance amount；And
3rd module, the 3rd module are used in the operating process of the engine in response to predicting for the fuel assembly
The pressure distribution and adjust the time that fuel flows from the fuel injector.
8. fuel assembly according to claim 7, the fuel assembly further comprises being operatively coupled to the fuel spray
The petrolift of emitter and the petrolift sensor for being operatively coupled to the petrolift, wherein first module is configured to
Receive the signal from the petrolift sensor.
9. fuel assembly according to claim 7, wherein, the fuel injector configuration is into allowing fuel from the combustion
The release position and forbid fuel to be moved between the closed position that the injector flows out that material ejector flows out, and the control
System processed includes the 4th module, the 4th module be configured to receive after the adjustment that fuel flows from the fuel injector when
Between, and initial time after the adjustment makes the fuel injector be moved to the release position.
10. a kind of method of the fuel injector in fuel assembly for operating engine, this method include：
In fuel injection process, the parameter of the fuel assembly is received；
In fuel injection process, by following steps based on fuel assembly described in the parameter prediction of the fuel assembly
Pressure distribution：Determine the estimated pressure of the fuel assembly, multiple fuel quantities are calculated based on the estimated pressure, according to the multiple
Fuel quantity calculates estimation fuel quantity and by the estimation fuel quantity compared with predetermined tolerance amount；
The time quantum flowed in response to the calculation of pressure distribution fuel of prediction from the fuel injector；And
The fuel injector is set to run the time quantum.
11. according to the method for claim 10, wherein, the step of predicting the pressure distribution of the fuel assembly, occurs connecing
After the step of receiving the parameter of the fuel assembly.
12. according to the method for claim 10, this method further comprises that the parameter based on the fuel assembly is adjusted
The time quantum that section fuel flows from the fuel injector.
13. according to the method for claim 10, wherein, the step of receiving the parameter of the fuel assembly, includes receiving fuel
At least one of pump signal, fuel assembly pressure signal, pressure set points signal and beginning injection signal.
14. according to the method for claim 10, this method further comprises：
The estimation fuel quantity is analyzed relative to the predetermined tolerance amount；
When the estimation fuel quantity determines the second estimated pressure of the fuel assembly when beyond the predetermined tolerance amount；
Multiple second fuel quantities are calculated based on second estimated pressure；
Second estimation fuel quantity is calculated according to the multiple second fuel quantity；
By the described second estimation fuel quantity compared with the predetermined tolerance amount；And
Sent when the described second estimation fuel quantity is corresponding with the predetermined tolerance amount to the fuel injector for fuel
The signal of flowing.
15. according to the method for claim 10, this method further comprises：
Start the first fuel injection period of the fuel injector；
The time quantum that fuel flows from the fuel injector is adjusted after first fuel injection period；And
Start the second fuel injection of the fuel injector after the time quantum that adjustment fuel flows from the fuel injector
Cycle.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201361846384P | 2013-07-15 | 2013-07-15 | |
| US61/846,384 | 2013-07-15 | ||
| PCT/US2014/046644 WO2015009692A1 (en) | 2013-07-15 | 2014-07-15 | System and method for fuel injector on-time calculation using fuel system pressure prediction |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105358817A CN105358817A (en) | 2016-02-24 |
| CN105358817B true CN105358817B (en) | 2017-11-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480038368.5A Expired - Fee Related CN105358817B (en) | 2013-07-15 | 2014-07-15 | For calculating the System and method for of fuel injector working time using fuel system pressure prediction |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN105358817B (en) |
| DE (1) | DE112014003273B4 (en) |
| WO (1) | WO2015009692A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018081115A1 (en) * | 2016-10-24 | 2018-05-03 | Cummins Inc. | Fuel pump pressure control structure and methodology |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101815858A (en) * | 2007-08-07 | 2010-08-25 | 德尔菲技术公司 | Fuel injector and method for controlling fuel injectors |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5678521A (en) * | 1993-05-06 | 1997-10-21 | Cummins Engine Company, Inc. | System and methods for electronic control of an accumulator fuel system |
| GB2351772B (en) * | 1999-07-08 | 2003-07-23 | Caterpillar Inc | Pressure-intensifying hydraulically-actuated electronically-controlled fuel injection system with individual mechanical unit pumps |
| US6612292B2 (en) * | 2001-01-09 | 2003-09-02 | Nissan Motor Co., Ltd. | Fuel injection control for diesel engine |
| US6598591B2 (en) * | 2001-12-18 | 2003-07-29 | Caterpillar Inc | Measuring check motion through pressure sensing |
| US6694953B2 (en) * | 2002-01-02 | 2004-02-24 | Caterpillar Inc | Utilization of a rail pressure predictor model in controlling a common rail fuel injection system |
-
2014
- 2014-07-15 CN CN201480038368.5A patent/CN105358817B/en not_active Expired - Fee Related
- 2014-07-15 WO PCT/US2014/046644 patent/WO2015009692A1/en active Application Filing
- 2014-07-15 DE DE112014003273.5T patent/DE112014003273B4/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101815858A (en) * | 2007-08-07 | 2010-08-25 | 德尔菲技术公司 | Fuel injector and method for controlling fuel injectors |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2015009692A1 (en) | 2015-01-22 |
| DE112014003273B4 (en) | 2018-06-14 |
| CN105358817A (en) | 2016-02-24 |
| DE112014003273T5 (en) | 2016-04-14 |
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