EP2593653A1 - Procédé d'adaptation - Google Patents

Procédé d'adaptation

Info

Publication number
EP2593653A1
EP2593653A1 EP11726342.6A EP11726342A EP2593653A1 EP 2593653 A1 EP2593653 A1 EP 2593653A1 EP 11726342 A EP11726342 A EP 11726342A EP 2593653 A1 EP2593653 A1 EP 2593653A1
Authority
EP
European Patent Office
Prior art keywords
actual
combustion chamber
fuel
operating state
pressure
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.)
Withdrawn
Application number
EP11726342.6A
Other languages
German (de)
English (en)
Inventor
Frank Altenschmidt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mercedes Benz Group AG
Original Assignee
Daimler AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Daimler AG filed Critical Daimler AG
Publication of EP2593653A1 publication Critical patent/EP2593653A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
    • F02D41/2406—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using essentially read only memories
    • F02D41/2425—Particular ways of programming the data
    • F02D41/2429—Methods of calibrating or learning
    • F02D41/2451—Methods of calibrating or learning characterised by what is learned or calibrated
    • 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
    • F02D41/1402—Adaptive control
    • 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
    • F02D41/2096—Output circuits, e.g. for controlling currents in command coils for controlling piezoelectric injectors
    • 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
    • F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
    • F02D41/2406—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using essentially read only memories
    • F02D41/2425—Particular ways of programming the data
    • F02D41/2429—Methods of calibrating or learning
    • F02D41/2451—Methods of calibrating or learning characterised by what is learned or calibrated
    • F02D41/2464—Characteristics of actuators
    • F02D41/2467—Characteristics of actuators for injectors
    • 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

Definitions

  • the present invention relates to a method for adapting an electrical control of a fuel injector according to the preamble of claim 1.
  • a method for adapting an electrical control of a fuel injector in which the fuel injector has a direct injection nozzle needle and serves for metering fuel to a combustion chamber of an internal combustion engine.
  • a current operating state of the internal combustion engine is monitored and adapted depending on the electrical control, which causes the actuation of the fuel injector.
  • this is realized in the known method in that the
  • Drive energy and the needle stroke of the fuel injection valve can be controlled so that the engine torque in a fuel injection valve with
  • Engine torque is adapted to the engine torque generated with a reference-type injector.
  • the known method is primarily used to compensate for production-related or aging-related changes in the injection behavior of the respective fuel injection valve.
  • the present invention deals with the problem for such a
  • Combustion chamber prevailing pressure or adjusting itself in the combustion chamber temporal pressure curve correlates with the actual work generated in the respective cylinder, which is introduced into the respective piston.
  • an actual work is now determined depending on the measured pressure, which is compared with a target work, which can be assigned to the current operating state.
  • This target work is the work that is in the current operating state due to the activation of the respective
  • Fuel injector should actually stop and, for example, one
  • Engine control unit is specified.
  • the current operating state of the internal combustion engine is determined by an associated engine control unit, for example in order to meet a specific performance request of the driver or a speed control device of the vehicle.
  • the engine control unit or a coupled injector control unit actuates the fuel injectors to overflow
  • Internal combustion engine controls or actuates, such as in a supercharged internal combustion engine, a variable turbine geometry, a throttle valve, variable valve trains and other valves and valves, in particular for
  • Combustion air control and possibly existing ignition devices.
  • the now actually set actual operating state is monitored in the invention on the basis of the pressure that sets in the combustion chambers. This can be done in particular cylinder-selective, that is, for each cylinder or for each combustion chamber, the pressure is detected individually.
  • Fuel injector are performed. For example, if the actual work is too large, this indicates that too much fuel has been injected. Accordingly, for example, a characteristic for operating the fuel injector, the
  • Relationship between injected fuel quantity, needle stroke and electric Actuator signal represented, be moved accordingly. Accordingly, with correction of the needle stroke, the amount of fuel to be injected can be adapted to the desired operating state of the internal combustion engine.
  • the adaptation method is a pure adaptation and not a regulation. While a control at each sufficient soli-actual deviation performs a control intervention, ie at each cycle and in particular at each cylinder, an adaptation performs an adaptation intervention with an adjustment of the electrical control only as a function of further boundary conditions, for example by the respective adaptation or Adaptation to give a lasting character. For example, it may be provided in the context of such an adaptation that an adjustment of the electrical control takes place only when the target-actual deviation during a predetermined number of consecutive cycles one
  • staggered assignments of deviation values and repetition numbers can be taken into account, so that there is a quasi-weighting of the deviations. For example, larger ones have to
  • the aim of the adaptation is thus not the compensation may be temporary
  • an actual pressure profile can be measured for the respective combustion chamber, that is, the development of the pressure over the
  • an indicated actual mean pressure for the respective combustion chamber can then be determined.
  • the indicated mean pressure represents the work related to the stroke volume per working cycle, with which the actual work of the respective combustion chamber can be determined from the determined indicated actual mean pressure.
  • Deviations are of particular interest in modern internal combustion engines, in which, for example, multiple injections are carried out.
  • the adaptation is performed during a multiple injection operation in which the fuel is supplied to the respective combustion chamber by means of a plurality of separate injections. It is also conceivable to carry out the adaptation during a single injection operation in which the
  • Fuel is supplied by means of a single injection to the respective combustion chamber.
  • stratified mixture reaches a stratification of the charge in the combustion chamber by an ignitable mixture is present in the region of the ignition device at the time of ignition, while in the farther region of the ignition device is a leaner
  • the fuel injected into the combustion chamber is produced or aligned such that at least part of the fuel in the combustion chamber moves in the direction of the ignition device.
  • wall-guided combustion process in which wall surfaces, in particular on the piston, take over the leadership of the fuel movement.
  • Burning known in which the leadership of the fuel movement in the combustion chamber largely supplied by the charge movement of the combustion chamber
  • Combustion air is guided.
  • the adaptation method proposed here can preferably be used in spray-guided combustion processes, since the precise beam design is important there.
  • adaptation method presented here for fuel injectors with outwardly opening nozzle is suitable.
  • the adaptation method can also be used with fuel injectors that work with an inwardly opening nozzle.
  • the adaptation method presented here is furthermore preferably used in fuel injectors which have a piezoactuator as the direct drive of the nozzle needle. There is a direct proportionality between control voltage and needle stroke.
  • the adaptation method can also be used in fuel injectors whose direct drive operates with an electromagnet for driving the nozzle needle. Furthermore, the adaptation method can also be used in fuel injectors with hydraulic transmission for controlling the nozzle needle. It is clear that with the adaptation method presented here, fuel injectors can be adapted for self-igniting or externally ignited internal combustion engines. Likewise, the adaptation method is suitable both for internal combustion engines, which are operated with liquid fuels, as well as for internal combustion engines, which are operated with gaseous fuels.

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)
  • Fuel-Injection Apparatus (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)

Abstract

L'invention concerne un procédé pour adapter une commande électrique d'injecteur de carburant, ce dernier présentant un entraînement direct d'une aiguille d'injecteur et servant à doser le carburant destiné à la chambre de combustion d'un moteur à combustion interne. Selon ce procédé, un état de fonctionnement présent du moteur à combustion interne est surveillé et la commande électrique est adaptée en fonction des résultats obtenus. Une meilleure adaptation peut être obtenue, si l'état de fonctionnement présent est surveillé en fonction d'une pression régnant dans la chambre de combustion respective, si un travail réel est déterminé en fonction de la pression mesurée, si le travail réel déterminé est comparé à un travail de consigne associé à l'état de fonctionnement présent et si l'adaptation de la commande électrique de chaque injecteur de carburant concerné est effectuée en fonction de la comparaison travail réel-travail de consigne du travail présent de chaque chambre de combustion concernée.
EP11726342.6A 2010-07-15 2011-06-11 Procédé d'adaptation Withdrawn EP2593653A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010027267A DE102010027267A1 (de) 2010-07-15 2010-07-15 Adaptionsverfahren
PCT/EP2011/002882 WO2012007085A1 (fr) 2010-07-15 2011-06-11 Procédé d'adaptation

Publications (1)

Publication Number Publication Date
EP2593653A1 true EP2593653A1 (fr) 2013-05-22

Family

ID=43796919

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11726342.6A Withdrawn EP2593653A1 (fr) 2010-07-15 2011-06-11 Procédé d'adaptation

Country Status (6)

Country Link
US (1) US20130116912A1 (fr)
EP (1) EP2593653A1 (fr)
JP (1) JP2013531173A (fr)
CN (1) CN103003556A (fr)
DE (1) DE102010027267A1 (fr)
WO (1) WO2012007085A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011100108B4 (de) * 2011-04-30 2022-03-17 Volkswagen Aktiengesellschaft Bestimmung einer Einspritzventilkennlinie und Verringerung eines Einspritzmengenunterschieds bei einem Verbrennungsmotor
DE102012206109C5 (de) 2012-04-13 2022-06-09 Wobben Properties Gmbh Rotorblatt einer Windenergieanlage
DE102013223756B4 (de) * 2013-11-21 2015-08-27 Continental Automotive Gmbh Verfahren zum Betreiben von Injektoren eines Einspritzsystems
DE102016219891B3 (de) 2016-10-12 2018-02-08 Continental Automotive Gmbh Betreiben eines Kraftstoffinjektors mit hydraulischem Anschlag

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JPS5746033A (en) * 1980-09-05 1982-03-16 Toyota Motor Corp Method of injecting fuel under electronic control
US5101788A (en) * 1990-04-26 1992-04-07 Mitsubishi Denki K.K. Internal-combustion engine control device
JP3053197B2 (ja) * 1990-07-06 2000-06-19 三菱電機株式会社 内燃機関の制御装置
US5323748A (en) * 1991-08-28 1994-06-28 Massachusetts Institute Of Technology Adaptive dilution control system for increasing engine efficiencies and reducing emissions
EP0686761B1 (fr) * 1994-06-06 1998-11-11 Massachusetts Institute Of Technology Système de commande adaptative de dilution pour augmenter les rendements de moteurs et réduire les émissions
JPH0968082A (ja) * 1995-09-04 1997-03-11 Unisia Jecs Corp ディーゼルエンジンの燃料噴射量制御装置
US6212945B1 (en) * 1997-12-05 2001-04-10 Wisconsin Alumni Research Foundation Method and apparatus for combustion quality diagnosis and control utilizing synthetic measures of combustion quality
DE19958465C2 (de) * 1999-12-04 2001-12-06 Bosch Gmbh Robert Verfahren zum Betreiben einer Brennkraftmaschine
GB0112338D0 (en) * 2001-05-21 2001-07-11 Ricardo Consulting Eng Improved engine management
JP4221574B2 (ja) * 2003-02-20 2009-02-12 株式会社デンソー 燃料噴射システム
FR2874972B1 (fr) * 2004-09-07 2009-09-18 Inst Francais Du Petrole Procede de controle d'un moteur a combustion interne a injection directe de carburant et moteur utilisant un tel procede
US7178507B1 (en) * 2005-10-31 2007-02-20 Gm Global Technology Operations, Inc. Engine cylinder-to-cylinder variation control
DE102006007823A1 (de) 2006-02-17 2007-08-30 Ralf Steeg Fluidauffangbehälter, Modulsystem mit Fluidauffangbehältern und Verwendung derselben
DE102006023468B3 (de) * 2006-05-18 2007-09-13 Siemens Ag Verfahren und Vorrichtung zur Steuerung eines Einspritzventils eines Verbrennungsmotors
JP4462315B2 (ja) * 2007-09-24 2010-05-12 株式会社デンソー 内燃機関制御装置
JP4416026B2 (ja) * 2007-09-28 2010-02-17 株式会社デンソー 蓄圧式燃料噴射システムの制御装置
JP4577348B2 (ja) * 2007-10-24 2010-11-10 株式会社デンソー 内燃機関制御装置及び内燃機関制御システム
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Also Published As

Publication number Publication date
WO2012007085A1 (fr) 2012-01-19
DE102010027267A1 (de) 2011-04-28
JP2013531173A (ja) 2013-08-01
US20130116912A1 (en) 2013-05-09
CN103003556A (zh) 2013-03-27

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