CN110100085A - For making the maximized method of engine torque - Google Patents

For making the maximized method of engine torque Download PDF

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Publication number
CN110100085A
CN110100085A CN201780068787.7A CN201780068787A CN110100085A CN 110100085 A CN110100085 A CN 110100085A CN 201780068787 A CN201780068787 A CN 201780068787A CN 110100085 A CN110100085 A CN 110100085A
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China
Prior art keywords
engine
signal
controller
cylmax
correction
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Granted
Application number
CN201780068787.7A
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Chinese (zh)
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CN110100085B (en
Inventor
B·韦贝克
F·拉斯加布哈鲁西
L·瑟伊勒
C·勒费夫尔
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New H Power Transmission System Holdings Ltd
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Renault SAS
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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
    • F02D41/401—Controlling injection timing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D35/00—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for
    • F02D35/02—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions
    • F02D35/023—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions by determining the cylinder pressure
    • 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
    • F02D41/008—Controlling each cylinder individually
    • 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
    • F02D41/1446—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 exhaust temperatures
    • 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
    • F02D41/1486—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor with correction for particular operating conditions
    • F02D41/1488—Inhibiting the regulation
    • 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
    • F02D2041/1409—Introducing closed-loop corrections characterised by the control or regulation method using at least a proportional, integral or derivative 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
    • F02D41/02—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
    • F02D2041/1413—Controller structures or design
    • F02D2041/1432—Controller structures or design the system including a filter, e.g. a low pass or high pass filter
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2250/00—Engine control related to specific problems or objectives
    • F02D2250/18—Control of the engine output torque
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/14—Introducing closed-loop corrections
    • F02D41/1401—Introducing closed-loop corrections characterised by the control or regulation method
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/30—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
    • 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

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)

Abstract

The present invention relates to a kind of for being made using controller (2) by by reliability constraint and the method for being subjected to the torque maximization that the engine that operation circulation changes provides, which is suitable for based on the signal (P for indicating engine parameter measured valuecylmax) and indicate engine parameter set point signal (setpoint_Pcylmax) come generate indicate injection advance amount correction signal.This method is especially the following steps are included:-restriction maximum cylinder pressure set point (setpoint_Pcylmax)；Limit the opereating specification (2) of the controller；Limit maximum cylinder pressure (Pcylmax) measured value stability criterion；Control the injection advance amount；And-correct the injection advance amount.

Description

For making the maximized method of engine torque
The maximized method of the cylinder pressure that the present invention relates to a kind of for making internal combustion engine and relevant apparatus.It is advantageous With in the motor vehicle, which is equipped with internal combustion engine on ground, is especially equipped with diesel engine.
More specifically, the measured value of the parameter of engine and the signal of specified value can will be indicated the present invention relates to one kind The method for being expressed as indicating the signal of the correction of injection advance amount.
In order to reach required performance level, the exploitation of engine is related to that defined production will be sprayed and manufacture variation considers Inside to meet reliability constraint.
Nowadays, it is accorded with by providing nargin to the performance level obtained on the reference engine for being known as " nominal engine " Close these constraints.
Check the maximum horizontal of cylinder pressure cycles to meet these nargin.For most of engines of manufacture, This depends on leading to each engine produced in such a way that it limits maximum pressure cyclical level for each engine Performance potential using insufficient.
It is expected that by the measured value for using cylinder pressure in real time, and the cylinder pressure of especially each pressures cycle is most Such nargin that big level is applied come the maximum cylinder pressure that " nominal " regulation table for reducing relative to engine is managed.
Specifically, this is related to the most atmosphere up to limit of reliability, that is managed by avoiding exceeding regulation table Control to cylinder pressure maximum cylinder pressure level.
The invention further relates to the single pressure sensors in the cylinder for being selectively applied in each engine, or selectivity Ground uses the pressure sensor of each cylinder for engine, therefore advantageously to allow to reduce relative to theoretical pole Limit taken nargin.
Solution has been described in document US 8942912, to solve to pollute based on being temporarily increased for cylinder pressure The discrete problem of discharge amount.This method cannot be used for stationary engine mode, because it can have reduces engine performance too early The shortcomings that.
Document EP 0145480, which is disclosed using piezo-electric device, measures cylinder pressure variation, but which adjusts without disclosing Parameter maximizes cylinder pressure.
Document WO 9015244 provide using for piston path length sensor or using for can relative to rise The sensor for the piston angle that beginning position is observed carrys out the value of control representation electronic spark advance amount.However, the document does not provide most Bigization cylinder pressure adjusts cylinder pressure to the solution near target value.
Document DE 295 2073 proposes a kind of method of the batch production variation of automatic compensation engine.The document is real A kind of method that the pressure sensor using in cylinder calculates maximum pressure value with carrying out Cycle by Cycle is showed.
Controller is sent by the value for indicating the maximum cylinder pressure provided by sensor, but this does not have cylinder pressure Control the function near specified value.Controller be used for by increase cylinder in air/fuel mixture function come Maximize the performance of engine.
Therefore, the present invention relates to a kind of torques for making to be provided by the engine constrained by reliability and cyclic dispersion degree Maximized method, the engine include controller, which can be based on the measured value for the parameter for indicating the engine Signal and indicate the engine the parameter specified value signal come generate indicate injection advance amount correction signal.The party Method the following steps are included:
Limit the specified value of cylinder pressure maximum value；
Limit the opereating specification of the controller；
Limit the stability criterion of cylinder pressure greatest measurement；
Control the injection advance amount；And
Correct the injection advance amount.
According to the embodiment of this method, the step of specified value of the restriction cylinder pressure maximum value, which is related to generating, indicates cylinder The signal of the specified value of Pressure maximum value.
According to another embodiment of this method, the step of opereating specification of the restriction controller, is related to indicate engine Speed and the value of engine torque request are compared with the engine torque threshold value that controller operation is suitble to.
In embodiment, the step of opereating specification of the restriction controller is related to so that indicating the cylinder pressure maximum value It is worth stable condition.
Proportional integration type controller can be used to realize that the rate-determining steps, the controller are calibrated to so that produced Expression injection advance amount correction signal without departing from the engine the parameter specified value.
In addition, the parameter of the engine can be the cylinder pressure maximum value.
According to the feature of this method, implement the aligning step by the controller.
According to another embodiment of this method, the step of correcting injection advance amount provides to control unit indicates the injection The signal of the finite correction of lead.
Specifically, this method can be related to the step of fuel flow rate that correction is ejected into the cylinder of engine.
According to another embodiment of this method, the step of correction injection flow, generates the school indicated to the injection flow Positive signal, to generate engine torque compensation.
According to another embodiment of this method, the step of executing the correction injection flow, to keep constant or substantially permanent Fixed delivery temperature.
The invention further relates to a kind of torsions for implementing to make to be provided by the engine constrained by reliability and cyclic dispersion degree The device of the maximized method of square, the device include controller, which can be based on the survey for the parameter for indicating the engine The signal of magnitude and indicate that the signal of specified value of the parameter of the engine generates the letter of the correction for indicating injection advance amount Number.
The device includes control unit, which is configured as the letter according to the finite correction for indicating injection advance amount Number and/or indicate injection in cylinder of the signal for the correction of fuel flow rate being ejected into cylinder to control the engine.
By reading the detailed description to non-limiting embodiment of the invention shown in the drawings, other mesh of the invention , advantages and features will become obvious, the attached drawing schematically show for make engine provide torque maximization Method key step and relevant apparatus structural detail.
Attached drawing shows the key step of the method according to the present invention for making torque maximization provided by the engine With the element of device, which is intended to make torque maximization.In the figure, the step of this method is described with diamond shape, and device Structural detail described with rectangle.
Device for making torque minimization is intended to make the limitation by reliability and cyclic dispersion degree of motor vehicles The cylinder pressure of internal combustion engine minimizes.
The device includes comparator 1, controller 2, which receives the error signal for indicating maximum cylinder pressure error erreur_Pcylmax.The device includes the pressure sensor 7 and control unit 6 that can measure engine cylinder pressure, the control Unit controls air/fuel mixture in cylinder based on the injection advance amount correction signal for being originated from controller 2 Injection.
This method comprises: first step A, limits the opereating specification of controller 2；With step B, the measurement of cylinder pressure maximum is limited The stability criterion of value.Controller 2 can be realized the control of injection advance amount.
This method comprises: step C, the correction of limit injection lead；Step D calculates the school to the fuel flow rate sprayed Just；Step E calculates maximum cylinder pressure gradient；And step F, filtering.
As described above, two inputs are compared by the comparator 1 that can be integrated in controller 2, the two inputs can It receives: regulation value signal consigne_Pcylmax, the signal indicate the region piston top dead center (TDC) in cylinder pressure maximum rule Definite value；With signal Pcylmax_Filtree, the signal indicate the cylinder pressure greatest measurement through filtering.Comparator 1 from the two Input generates error signal e rr_Pcylmax, signal expression cylinder pressure worst error.
For example, comparator 1, which calculates the value, can be used following formula:
err_Pcylmax=consigne_Pcylmax-Pcylmax_filtree
It will indicate the error signal e rr_P of cylinder pressure worst errorcylmaxIt is sent to controller 2.Controller is provided as Receive the second stability signal stab_Pcylmax, the stable state of signal expression cylinder pressure greatest measurement.
The signal must pass through stability criterion.Therefore, this method implementation steps B, during the step, restriction will be abided by Stability criterion make error signal reach controller.In another embodiment, stability criterion is tested by controller 2 Card, and be the additional conditions of active controller.
Controller 2 includes specific opereating specification, which makes the value TQI and table that indicate engine torque request Show that the value N of engine speed comes into force.The opereating specification is limited in step.
For example, this is because activation condition requires to indicate that the value TQI of engine torque request may be substantially close to threshold value Cmax, which indicates the engine torque that is suitble to of operation of controller.
After interrogation control 2, when sending response signal to it to authorize activation or not activate, this condition is verified.
For example, controller 2 is proportional integration type controller, especially there is the controller of low proportional, which makes Automatic control can be executed with the closed loop of cylinder pressure maximum prescribed value by obtaining.The controller is calibrated to without departing from specified value.
Controller 2 generates the correction signal corr_avance for indicating the correction of injection advance amount at output.
The correction of limit injection lead ensures injection advance amount to correct for limit injection lead during step C The dynamic process slow enough of correction.
Injection advance amount correction is that the injection advance amount of engine is caused to change simultaneously after having arrived at control unit 6 Cause the variation of the cylinder pressure maximum value in addition to other cyclic dispersion degree of engine.
Meanwhile in the case where constant injection fuel flow rate, the variation of injection advance amount influences delivery temperature Tavt.This is Because injection advance amount is bigger, delivery temperature reduces more.
The present invention advantageously proposes, in step D, injection fuel flow rate is calculated for each variation of injection advance amount Correction, while substantially invariable delivery temperature T is kept during circulationavt, to obtain engine torque compensation.
The calculating can be executed by computing unit, and the computing unit is not shown in figures and can be integrated in control unit 6 In, and the computing unit generates the correction signal corr_debit for indicating injection flow correction.
As described above, cylindrical pressure sensor 7 measures the cylinder pressure of each circulation.
These measured values are filtered during filter step F, and send it to comparator 1, to generate circulation, As long as engine is currently running, which will be iteratively repeated.
However, this filtering introduces delay, which may potentially and temporarily cause controller 2 beyond regulation Value.
The opereating specification of controller advantageously enables to the shortcomings that overcoming filter delay.
In addition, calculating maximum pressure value P during step EcylmaxGradient grad_Pcylmax, to limit measured value Stability criterion, and therefore advantageously enable to the low dynamic process for ensuring system.
Generate stability signal stab_PcylmaxAnd controller 2 is sent it to, to generate circulation, as long as engine is just It is running, which will be iteratively repeated.
In the embodiment of this method, controller is traditional PID (proportional integral differential type) controller, but is then had There is the shortcomings that causing beyond specified value.
In another embodiment of this method, the operation standard of controller includes about engine torque and engine speed The condition of the gradient of degree.

Claims (12)

1. a kind of for making the method for the torque maximization provided by the engine constrained by reliability and cyclic dispersion degree, the hair Motivation includes controller (2), which can be based on the signal (P of the measured value for the parameter for indicating the enginecylmax) and table Show the signal (consigne_P of the specified value of the parameter of the enginecylmax) generate the correction for indicating injection advance amount Signal (corr_avance), it is characterised in that method includes the following steps:
Limit the specified value (consigne_P of cylinder pressure maximum valuecylmax)；
Limit the opereating specification of the controller；
Limit the stability criterion (P of cylinder pressure greatest measurementcylmax)；
Control the injection advance amount；And
Correct the injection advance amount.
2. according to the method described in claim 1, wherein, the step of specified value of the restriction cylinder pressure maximum value, is related to generating Indicate the signal (consigne_P of the specified value of cylinder pressure maximum valuecylmax)。
3. method according to any of the preceding claims, wherein the step of opereating specification of the restriction controller relates to And the value (N, TQI) for indicating engine speed and engine torque request and the controller are operated into the engine torque being suitble to Threshold value (Cmax) be compared.
4. method according to any of the preceding claims, wherein the step of opereating specification of the restriction controller relates to And make the value (P for indicating the cylinder pressure maximum valuecylmax) stable condition.
5. method according to any of the preceding claims, wherein use ratio integral-mode controller (2) realizes this Rate-determining steps, the controller are calibrated to the signal (corr_ so that the generated correction for indicating injection advance amount Avance) without departing from the specified value of the parameter of the engine.
6. method according to any of the preceding claims, wherein the parameter of the engine be cylinder pressure most Big value.
7. method according to any of the preceding claims, wherein mentioned by the controller (2) to implement the injection Preceding amount aligning step.
8. method according to any of the preceding claims, wherein to control unit the step of correction injection advance amount (6) signal (corr_injection_bornee) for indicating the finite correction of the injection advance amount is provided.
9. method according to any of the preceding claims is related to the fuel stream that correction is ejected into the cylinder of engine The step of amount.
10. according to the method described in claim 9, wherein, the step of correction injection flow, generates and indicates to the injection stream The signal (corr_debit) of the correction of amount, to generate engine torque compensation.
11. according to the method described in claim 10, wherein, the step of executing the correction injection flow, to keep constant or base This constant delivery temperature (Tavt)。
12. a kind of method for implementing to make the torque maximization provided by the engine constrained by reliability and cyclic dispersion degree Device, which includes controller (2), which can be based on the signal of the measured value for the parameter for indicating the engine (Pcylmax) and indicate the engine the parameter specified value signal (consigne_Pcylmax) generate expression injection advance The signal of the correction of amount, it is characterised in that the device includes control unit (6), which is configured as being sprayed according to expression The signal (corr_avance_bornee) of the finite correction of lead and/or the school for indicating the fuel flow rate being ejected into cylinder Injection in cylinder of the positive signal (corr_debit) to control the engine.
CN201780068787.7A 2016-10-07 2017-09-28 Method for maximizing engine torque Active CN110100085B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR1659699A FR3057303B1 (en) 2016-10-07 2016-10-07 METHOD FOR MAXIMIZING AN ENGINE TORQUE
FR1659699 2016-10-07
PCT/FR2017/052647 WO2018065700A2 (en) 2016-10-07 2017-09-28 Method for maximizing an engine torque

Publications (2)

Publication Number Publication Date
CN110100085A true CN110100085A (en) 2019-08-06
CN110100085B CN110100085B (en) 2022-06-07

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CN201780068787.7A Active CN110100085B (en) 2016-10-07 2017-09-28 Method for maximizing engine torque

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EP (1) EP3523531A2 (en)
JP (1) JP2019530825A (en)
KR (1) KR102211809B1 (en)
CN (1) CN110100085B (en)
FR (1) FR3057303B1 (en)
WO (1) WO2018065700A2 (en)

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EP0749523A1 (en) * 1994-12-23 1996-12-27 Mtu Motoren- Und Turbinen-Union Friedrichshafen Gmbh Process for regulating design load and acceleration behaviour of supercharged internal combustion engines
US5636621A (en) * 1994-12-30 1997-06-10 Honda Giken Kogyo Kabushiki Kaisha Fuel metering control system for internal combustion engine
JPH10227251A (en) * 1997-02-13 1998-08-25 Robert Bosch Gmbh Controlling method and device for internal combustion engine
CN1611759A (en) * 2003-10-31 2005-05-04 株式会社电装 Fuel jet control system of IC engine
CN101151450A (en) * 2005-03-31 2008-03-26 通用电气公司 System and method for operating a compression-ignition engine
EP1744037A1 (en) * 2005-07-14 2007-01-17 Ford Global Technologies, LLC Method of controlling the start of combustion for an internal combustion engine
CN101418727A (en) * 2007-10-22 2009-04-29 罗伯特.博世有限公司 Method and device for ascertaining a cylinder pressure feature
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JP2010084733A (en) * 2008-10-02 2010-04-15 Denso Corp Fuel injection control device
WO2010125265A1 (en) * 2009-04-29 2010-11-04 Peugeot Citroën Automobiles SA Method for controlling the operation of an engine
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CN103874833A (en) * 2011-11-16 2014-06-18 三菱重工业株式会社 Exhaust purification system for internal combustion engine

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Publication number Publication date
WO2018065700A2 (en) 2018-04-12
CN110100085B (en) 2022-06-07
KR102211809B1 (en) 2021-02-03
KR20190057393A (en) 2019-05-28
WO2018065700A3 (en) 2018-06-14
JP2019530825A (en) 2019-10-24
FR3057303B1 (en) 2019-10-11
EP3523531A2 (en) 2019-08-14
FR3057303A1 (en) 2018-04-13

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