EP2470769A1 - Procédé et appareil de commande pour faire fonctionner un actionneur électromagnétique - Google Patents

Procédé et appareil de commande pour faire fonctionner un actionneur électromagnétique

Info

Publication number
EP2470769A1
EP2470769A1 EP10739330A EP10739330A EP2470769A1 EP 2470769 A1 EP2470769 A1 EP 2470769A1 EP 10739330 A EP10739330 A EP 10739330A EP 10739330 A EP10739330 A EP 10739330A EP 2470769 A1 EP2470769 A1 EP 2470769A1
Authority
EP
European Patent Office
Prior art keywords
electromagnetic actuator
control
magnetic circuit
state
current
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
Application number
EP10739330A
Other languages
German (de)
English (en)
Other versions
EP2470769B1 (fr
Inventor
Klaus Joos
Ruben Schlueter
Jens Neuberg
Helerson Kemmer
Holger Rapp
Haris Hamedovic
Joerg Koenig
Anh-Tuan Hoang
Bernd Wichert
Wolfgang Fischer
Silke Seuling
Achim Hirchenhein
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP2470769A1 publication Critical patent/EP2470769A1/fr
Application granted granted Critical
Publication of EP2470769B1 publication Critical patent/EP2470769B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • F02D41/20—Output circuits, e.g. for controlling currents in command coils
    • 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
    • F02D41/26—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using computer, e.g. microprocessor
    • F02D41/28—Interface circuits
    • 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
    • F02D2041/2003—Output circuits, e.g. for controlling currents in command coils using means for creating a boost voltage, i.e. generation or use of a voltage higher than the battery voltage, e.g. to speed up injector opening
    • 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
    • F02D2041/2031—Control of the current by means of delays or monostable multivibrators
    • 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
    • F02D2041/2051—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit using voltage 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
    • F02D2041/202—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit
    • F02D2041/2058—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit using information of the actual current value
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/18—Circuit arrangements for obtaining desired operating characteristics, e.g. for slow operation, for sequential energisation of windings, for high-speed energisation of windings
    • H01F7/1844—Monitoring or fail-safe circuits

Definitions

  • the invention relates to a method for operating an electromagnetic actuator, in particular a fuel injection valve of an internal combustion engine of a motor vehicle, in which the electromagnetic actuator is driven during a drive operation in order to influence an operating state of the actuator.
  • the invention further relates to a control device for carrying out such an operating method.
  • Control unit of the type mentioned above to improve that increased precision in the control of the electromagnetic actuator is given without requiring additional power pulses that are not part of the Anberichttician.
  • a particularly precise control of the electromagnetic actuator is advantageously possible because a residual magnetic field influencing the operating behavior of the electromagnetic actuator, which results, for example, from previous drive processes, can be compensated for and, in particular, its effects on future activation can be compensated.
  • Magnetization characteristic is carried out, which characterizes the magnetizing current.
  • the magnetization characteristic can according to the invention, for example in
  • Dependence of a time course of a current flowing through a magnetic coil of the electromagnetic actuator coil current can be determined.
  • Actuating process and / or a control start depending on the state of the magnetic circuit and / or the magnetization characteristic can be specified.
  • magnetization characteristic is formed in dependence of this determined voltage value.
  • a formation of the magnetization characteristic as a function of a plurality of the aforementioned variables (coil current, time interval, coil voltage) is likewise conceivable.
  • the state of the magnetic circuit is determined model-based as a function of at least one control variable for the electromagnetic actuator.
  • a state of the magnetic circuit of the electromagnetic actuator can be determined in a particularly precise manner as a function of at least one drive variable for the electromagnetic actuator.
  • the state of the magnetic circuit of the electromagnetic actuator can be determined in a particularly precise manner as a function of at least one drive variable for the electromagnetic actuator.
  • the magnetic circuit of the electromagnetic actuator are determined not only at the beginning of a respective driving process, but also to further operating times of the electromagnetic actuator.
  • the state of the magnetic circuit can be particularly advantageous depending on one or more several preceding driving operations are determined, resulting in an increased precision with respect to the information characterizing the state of the magnetic circuit.
  • Internal combustion engine is executable.
  • FIG. 1 Schematically a fuel injection valve of an internal combustion engine of a motor vehicle with an inventively operated
  • FIG. 2 shows a simplified equivalent circuit diagram of a magnetic circuit of the electromagnetic actuator from FIG. 1,
  • Figures 3 and 4 each show a time course of different operating variables of the electromagnetic actuator
  • FIG. 5 shows a functional diagram of a further embodiment of the invention
  • FIG. 1 schematically shows a fuel injection valve 100 of FIG
  • the fuel injection valve 100 has an electromagnetic actuator 10 which drives at least one component, not shown here, of the fuel injection valve 100, for example a valve needle, in order to effect fuel injections.
  • the electromagnetic actuator 10 is driven by a control unit 20 assigned to it.
  • the control unit 20 has a known manner via a
  • FIG. 2 shows a simplified equivalent circuit diagram of a magnetic circuit 11 of a typical electromagnetic actuator 10 (FIG. 1).
  • the equivalent circuit diagram has a resistor R_c, which represents the ohmic resistance of a primary coil of the electromagnetic actuator 10. Connected in series with the ohmic resistor R_c is a main inductance L_h, which is a
  • a series circuit Parallel to the main inductance L_h, a series circuit is provided which has a leakage inductance L_ ⁇ and a further ohmic resistor R_w * .
  • the further ohmic resistance R_w * is an eddy current resistance of the electromagnetic actuator 10 which is translated to the side of the magnetic coil.
  • the actuation of the electromagnetic actuator 10 or of the magnetic circuit 11 produced by it with a drive voltage u results according to the circuit topology described above a coil current i_c.
  • the coil current i_c branches as shown in Figure 2 apparent between the
  • Main flow path M and an eddy current path l_w are distinguished, wherein the vortex Ström pf ad l_w on the leakage inductance L_ ⁇ extends.
  • FIG. 3 shows a time profile of the currents described above through the magnetic circuit according to FIG. 2.
  • an operating state of the electromagnetic actuator 10 is assumed, which is characterized in that no energy in the form of magnetic fields is stored in the inductances L_h, L_ ⁇ at the beginning t_0 of a drive process.
  • This statement is synonymous with the fact that both the magnetization current i_m and the eddy current i_w * have a value of zero at the time t_0, compare FIG. 3.
  • Drive voltage u is set to a lower value.
  • Magnetizing current i_m occur, there is a deviating from the above explained with reference to Figure 3 scenario.
  • magnetization currents i_m may be due to a preceding activation process has been terminated in time so shortly before the beginning of t_0, that not already the entire magnetic field of the leakage inductance L_ ⁇ has subsided.
  • a non-vanishing eddy current i_w * results in the
  • the first of the three operating scenarios illustrated in FIG. 4 is characterized in that
  • the eddy-current curve i_w * 2 that occurs in this case is likewise illustrated in FIG.
  • Magnetizing current i_m3 at the control start time t_0 also have an even greater value than that in the magnetization current profile i_m2 is the case.
  • the reason for this can be, for example, a particularly short pause time between two successive drive operations of the electromagnetic actuator 10, so that relatively relatively much energy is still stored in the magnetic field of the leakage inductance L_ ⁇ at the actuation start time t_0 of the drive process considered here.
  • the coil current i_c3 accordingly reaches earliest the predefinable desired value l_boos.
  • the corresponding eddy current profile is illustrated by the reference symbol i_w * 3.
  • the magnetization characteristic can advantageously be used directly to modify the activation of the electromagnetic actuator 10, that is to say in particular the drive voltage u.
  • the time profile of the drive voltage u in so
  • Time t_0 always the same performance of the electromagnetic actuator 10 and thus, for example, the same injection quantity in the operation of the fuel injection valve 100 ( Figure 1) results.
  • the magnetization parameter can be determined particularly efficiently as a function of a time profile of the coil current i_c flowing through the magnet coil of the electromagnetic actuator 10. Particularly easy this can be accomplished by a
  • Time interval t_mess is determined between the beginning t_0 of the drive operation and the time t_1, at which the coil current i_d reaches the predetermined setpoint l_mess.
  • the magnetization characteristic used for modifying the drive quantity u can finally be formed as a function of the determined time interval t_mess. It is particularly advantageous to select the desired value l_mess equal to the desired value l_boos, since then the end of the
  • Boost phase with constant voltage u-boos also marks the time t_1.
  • the state of the magnetic circuit 1 1 is determined model-based as a function of at least one control variable for the electromagnetic actuator 10.
  • model 200 shown in FIG. 5 can be used which, for example, can be used by a corresponding computer program in one
  • Arithmetic unit of the controller 20 ( Figure 1) is implemented.
  • the model 200 input quantities E1, E2 supplied.
  • the input variables E1, E2 may be, for example, parameters of the last fuel injection present in the control unit 20. Furthermore, the input quantities E1, E2 may also include desired characteristics of the following injection.
  • the model 200 according to the invention determines therefrom parameters for the
  • Control of the subsequent injection which may be, for example, a time course of the drive voltage u ( Figure 2).
  • the model 200 according to the invention can be provided by the provision
  • the metrologically recorded variables M may be, for example, the drive voltage u, the drive current I, from which further variables can be determined, for example, an opening time and / or a closing time and / or a duration of flight of a movable component of the fuel injection valve 100 during the activation of the
  • Fuel injection valve performs a ballistic trajectory.
  • the model 200 according to the invention forms from the supplied to him
  • electromagnetic actuator 10 which may be, for example, the timing of the drive voltage u.
  • Control variables for the subsequent control process is taken into account.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Magnetically Actuated Valves (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

L'invention concerne un procédé de fonctionnement d'un actionneur électromagnétique, en particulier d'un injecteur de carburant d'un moteur à combustion interne d'un véhicule à moteur, ledit procédé consistant à commander l'actionneur électromagnétique au cours d'un processus de commande de l'actionneur électromagnétique afin de modifier un état de fonctionnement dudit actionneur. Selon l'invention, l'état d'un circuit magnétique (11) de l'actionneur électromagnétique, en particulier de l'état au début du processus de commande, est pris en compte.
EP10739330.8A 2009-08-24 2010-07-23 Procédé et appareil de commande d'un actionneur electromagnetique Active EP2470769B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102009028829 2009-08-24
DE102010000872A DE102010000872A1 (de) 2009-08-24 2010-01-13 Verfahren und Steuergerät zum Betreiben eines elektromagnetischen Aktors
PCT/EP2010/060691 WO2011023476A1 (fr) 2009-08-24 2010-07-23 Procédé et appareil de commande pour faire fonctionner un actionneur électromagnétique

Publications (2)

Publication Number Publication Date
EP2470769A1 true EP2470769A1 (fr) 2012-07-04
EP2470769B1 EP2470769B1 (fr) 2021-07-07

Family

ID=43525295

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10739330.8A Active EP2470769B1 (fr) 2009-08-24 2010-07-23 Procédé et appareil de commande d'un actionneur electromagnetique

Country Status (4)

Country Link
EP (1) EP2470769B1 (fr)
CN (1) CN102472189B (fr)
DE (1) DE102010000872A1 (fr)
WO (1) WO2011023476A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012205573B4 (de) * 2012-04-04 2019-06-06 Continental Automotive Gmbh Bestimmen des zeitlichen Bewegungsverhaltens eines Kraftstoffinjektors basierend auf einer Auswertung des zeitlichen Verlaufs von verschiedenen elektrischen Messgrößen
DE102013221298A1 (de) 2012-10-22 2014-04-24 Robert Bosch Gmbh Verfahren zum Abgleichen eines Sensorelements zur Erfassung mindestens einer Eigenschaft eines Messgases in einem Messgasraum
DE102012024862B3 (de) * 2012-12-19 2013-07-04 Audi Ag Aktor, Kraftfahrzeug mit einem derartigen Aktor und Verfahren zum Betreiben eines Aktors
DE102015209566B3 (de) 2015-05-26 2016-06-16 Continental Automotive Gmbh Ansteuerung von Kraftstoffinjektoren bei Mehrfacheinspritzungen

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1055675B (it) * 1975-11-12 1982-01-11 Fiat Spa Procedimento e dispositivo di stabilizzazione della portata degli iniettori elettromagnetici mediante rilevamento del tempo di apertura definito tra due soglie di correnti prefissat
DE19533452B4 (de) * 1995-09-09 2005-02-17 Fev Motorentechnik Gmbh Verfahren zur Anpassung einer Steuerung für einen elektromagnetischen Aktuator
DE10134332A1 (de) * 2001-07-14 2003-01-23 Bosch Gmbh Robert Verfahren und Vorrichtung zur Steuerung eines Verbrauchers
DE10138483A1 (de) 2001-08-04 2003-02-13 Bosch Gmbh Robert Verfahren und Vorrichtung zur Steuerung eines elektromagnetischen Verbrauchers
US6923161B2 (en) * 2002-03-28 2005-08-02 Siemens Vdo Automotive Corporation Fuel injection timer and current regulator
DE102007026947B4 (de) * 2007-06-12 2009-06-10 Continental Automotive Gmbh Verfahren und Vorrichtung zum Betreiben eines Einspritzventils
DE102007045779A1 (de) * 2007-09-25 2009-04-09 Continental Automotive Gmbh Verfahren zur Ansteuerung eines Magnetventils und zugehörige Vorrichtung
EP2083159A1 (fr) * 2008-01-28 2009-07-29 GM Global Technology Operations, Inc. Procédé pour la commande d'injecteurs de carburant actionnés par solénoïde de moteurs à combustion interne

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
None *
See also references of WO2011023476A1 *

Also Published As

Publication number Publication date
WO2011023476A1 (fr) 2011-03-03
EP2470769B1 (fr) 2021-07-07
DE102010000872A1 (de) 2011-03-03
CN102472189B (zh) 2014-11-05
CN102472189A (zh) 2012-05-23

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