EP0720770B1 - Procede et dispositif permettant d'exciter un consommateur electromagnetique - Google Patents

Procede et dispositif permettant d'exciter un consommateur electromagnetique Download PDF

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Publication number
EP0720770B1
EP0720770B1 EP95924843A EP95924843A EP0720770B1 EP 0720770 B1 EP0720770 B1 EP 0720770B1 EP 95924843 A EP95924843 A EP 95924843A EP 95924843 A EP95924843 A EP 95924843A EP 0720770 B1 EP0720770 B1 EP 0720770B1
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EP
European Patent Office
Prior art keywords
current
regulator output
load
output voltage
switching time
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.)
Expired - Lifetime
Application number
EP95924843A
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German (de)
English (en)
Other versions
EP0720770A1 (fr
Inventor
Viktor Kahr
Peter Schmitz
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
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Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0720770A1 publication Critical patent/EP0720770A1/fr
Application granted granted Critical
Publication of EP0720770B1 publication Critical patent/EP0720770B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • F02D1/00—Controlling fuel-injection pumps, e.g. of high pressure injection type
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B3/00—Engines characterised by air compression and subsequent fuel addition
    • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
    • 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
    • F02D2041/2017—Output circuits, e.g. for controlling currents in command coils using means for creating a boost current or using reference switching
    • 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
    • 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

Definitions

  • the invention relates to a method and a device to control an electromagnetic consumer according to the preambles of the independent claims.
  • Such a method and such a device for Actuation of an electromagnetic consumer for example from DE-OS 34 26 799 (US-A 4,653,447) known.
  • the consumer is in line with one Current control means switched.
  • the current control means is with a controller output voltage can be applied, the Controller output voltage depending on a control device a comparison between an actual value and a setpoint for the current that flows through the consumer or the Voltage that drops at the consumer can be specified. It are the switching times and, based on this, the Switch-on times and switch-off times of a solenoid valve detected. Based on the time course of the current through the solenoid valve is the exact switching time of the Solenoid valve determined.
  • Such solenoid valves are preferably used to control the Injection of fuels in petrol and / or diesel engines used. For exact metering of even the smallest injection quantities the time of switching is of particular interest, in which the armature of the solenoid valve is one of its reached both end positions.
  • the procedure is such that in one Time window within which the switching time is usually occurs, the current curve and / or the voltage curve is evaluated and based on its temporal course of the Switching time is determined. This is the on the solenoid valve applied voltage or the current flowing through the solenoid valve Current adjusted to a certain value. So it will a constant solenoid valve voltage or current for generation a steady course of the solenoid valve current or voltage provided.
  • the invention has for its object in a method and a device for controlling an electromagnetic Consumer, of the type mentioned, the To simplify detection of the switching time.
  • FIG. 2 various signals plotted over time.
  • the exemplary embodiment described is a device for controlling an electromagnetic Consumer.
  • the device described is and the described method in connection with any electromagnetic consumers can be used. she is not limited to the specific application. Particularly advantageous is, however, the device according to the invention and that Methods according to the invention in connection with internal combustion engines used, in particular when metering Fuel in a combustion chamber of a self-igniting internal combustion engine. For this purpose it is particularly advantageous Way a solenoid valve to control the metering of Fuel used in the internal combustion engine.
  • FIG. 1 are essential elements of the device schematically for controlling a solenoid-controlled fuel metering device shown.
  • An electromagnetic one Consumer 100, a current control means 110, and a current measuring means 120 are in series between a supply voltage Ubat and ground switched.
  • An ohmic resistor is preferably used as the current measuring means 120 used.
  • A is preferably used as the current control means Transistor, in particular a field effect transistor.
  • Consumer 100 is an inductive one Resistance, especially a coil of a solenoid valve.
  • the two connections of the current measuring means 120 are connected to a current detection 130.
  • the current detection 130 acts on a node 135 with the actual value I actual for the current.
  • a setpoint I Soll for the current is present at the second input of node 135.
  • the target value I target is provided by a controller 140.
  • a Current regulator 150 With the output signal of node 135 is a Current regulator 150, in particular an analog regulator, is applied.
  • the output signal UR, IR of the current regulator 150 arrives via a manipulated variable detection 160 to the control connection of the current control means 110.
  • a Field effect transistor is the control connection around the gate of the field effect transistor.
  • An ohmic resistor is preferably used as the manipulated variable detection 160.
  • the BIP detection 170 applies a signal to the controller 140.
  • BIP detection 170 is preferably designed as a comparator that evaluates the voltage drop across resistor 160. As soon as the differentiated output voltage U R becomes less than zero, the BIP detection 170 generates an output signal. Based on the differentiated control output voltage or the direction of flow of the controller output current, the BIP detection detects the switching time.
  • a control signal U Ein is plotted over time T in the first line. This signal indicates whether the control unit 140 forwards a target value I target to the node 135.
  • the current I MV flowing through the solenoid valve is plotted in the second line.
  • the regulator voltage U R present at the output of the regulator 150 is plotted in the fourth line, the differentiated regulator output voltage or the regulator output current I R.
  • the output signal of the BIP acquisition 170 U BIP is plotted.
  • the control device 140 does not emit a signal until the time t1 .
  • the current control means 110 interrupts the flow of current through the consumer 100 and the solenoid valve is not activated.
  • control unit 140 specifies a setpoint. This means that the output signal U Ein takes on an increased value. Since the current flowing through the solenoid valve has not yet reached its desired value, the result of this is that a value other than 0 is present at the output of node 135.
  • the controller 150 then outputs a corresponding manipulated variable U R which increases from 0 to a value. This means that the gate of the current control means is charged by means of a current. The current I R therefore rises very quickly. This in turn has the consequence that the current control means 110 releases the current flow I MV and the current, I MV increases over time.
  • the manipulated variable U R reaches its maximum value and the current I R drops.
  • the current I MV flowing through the solenoid valve reaches its target value I target .
  • the output variable U R of the controller 150 changes. It takes on a smaller value than before. This in turn causes the current I R to assume negative values for a short time. It changes its sign at time t2 . This in turn causes the BIP detection 170 to emit a signal at time t2 which indicates a change in the current direction.
  • the armature of the solenoid valve reaches its new end position. This in turn causes the inductance of the coil to change.
  • the change in the inductance of the coil causes a discontinuity in the output signal U R of the regulator 150, which results in a change of sign or a change in the current I R.
  • This change in the sign of the current I R in turn causes the BIP detection 170 to output a pulse signal to the controller 140 at the time t3 .
  • the control device 140 recognizes the second pulse of the signal U BIP as the switching time of the solenoid valve and evaluates this signal accordingly.
  • the GDP detection suppresses the first pulse at time t2 .
  • a solenoid valve the switching time (BIP) by evaluating the manipulated variable of a current regulator is obtained.
  • a current regulator an analog controller.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Magnetically Actuated Valves (AREA)

Abstract

L'invention concerne un procédé et un dispositif permettant d'exciter un consommateur (100) électromagnétique, notamment une électrovanne pour influer sur le dosage en carburant d'un moteur Diesel. Le consommateur (100) est monté en série avec un élément de commande du courant (110) auquel on peut appliquer un signal d'excitation pouvant être prédéterminé par un élément de régulation (150). Un signal de sortie de l'élément de régulation (150) peut être évalué pour déterminer l'instant de commutation du consommateur électromagnétique.

Claims (4)

  1. Procédé de commande d'un consommateur électromagnétique (100), ce consommateur (100) étant branché en série avec un moyen de commande de courant (110), le moyen de commande de courant (110) recevant une tension de sortie de régulateur prédéterminée par un moyen de régulation (150) en fonction de la comparaison entre une valeur réelle et une valeur de consigne de l'intensité traversant le consommateur ou de la tension aux bornes du consommateur,
    caractérisé en ce que
    pour déterminer un instant de commutation ( BIP) du consommateur électromagnétique, on exploite la tension de sortie de régulateur (UR), différentié, ou le courant de sortie du régulateur (IR).
  2. Procédé selon la revendication 1,
    caractérisé en ce que
    on reconnaít l'instant de commutation par le changement de signe algébrique de la tension de sortie différentiée de régulateur (UR).
  3. Procédé selon la revendication 1,
    caractérisé en ce qu'
    on reconnaít l'instant de commutation par le changement de sens de passage du courant de sortie de régulateur (IR).
  4. Dispositif de commande d'un consommateur électromagnétique (100), le consommateur (100) étant branché en série avec un moyen de commande de courant (110), recevant une tension de sortie de régulateur prédéterminée par un moyen de régulation (150) en fonction de la comparaison entre une valeur réelle et une valeur de consigne du courant traversant le consommateur ou de la tension aux bornes du consommateur,
    caractérisé par
    des moyens (170) qui déterminent un instant de commutation (BIP) du consommateur électromagnétique en exploitant la tension de sortie de régulateur (UR) ou le courant de sortie de régulateur (IR).
EP95924843A 1994-07-22 1995-07-07 Procede et dispositif permettant d'exciter un consommateur electromagnetique Expired - Lifetime EP0720770B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4425987 1994-07-22
DE4425987A DE4425987A1 (de) 1994-07-22 1994-07-22 Verfahren und Vorrichtung zur Ansteuerung eines elektromagnetischen Verbrauchers
PCT/DE1995/000890 WO1996003758A1 (fr) 1994-07-22 1995-07-07 Procede et dispositif permettant d'exciter un consommateur electromagnetique

Publications (2)

Publication Number Publication Date
EP0720770A1 EP0720770A1 (fr) 1996-07-10
EP0720770B1 true EP0720770B1 (fr) 2002-05-08

Family

ID=6523877

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95924843A Expired - Lifetime EP0720770B1 (fr) 1994-07-22 1995-07-07 Procede et dispositif permettant d'exciter un consommateur electromagnetique

Country Status (5)

Country Link
EP (1) EP0720770B1 (fr)
JP (1) JPH09503353A (fr)
KR (1) KR100378452B1 (fr)
DE (2) DE4425987A1 (fr)
WO (1) WO1996003758A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19728840A1 (de) 1997-07-05 1999-01-07 Bosch Gmbh Robert Verfahren und Vorrichtung zur Erfassung eines Schaltzeitpunktes eines Magnetventils
DE10129153A1 (de) * 2001-06-16 2003-01-09 Festo Ag & Co Elektromagnetisches Ventil mit Haltestromabsenkung
DE10212092A1 (de) 2002-03-19 2003-10-09 Dbt Autom Gmbh Verfahren und Vorrichtung zum Betrieb eines Elektromagneten an einem eigensicheren Gleichstromkreis
DE10252476B4 (de) * 2002-11-12 2012-07-26 Volkswagen Ag Verfahren zum Betreiben einer Brennkraftmaschine und Brennkraftmaschine
NO319194B1 (no) 2002-11-14 2005-06-27 Pronova Biocare As Lipase-katalysert forestringsfremgangsmate av marine oljer
DE102008055008B4 (de) * 2008-12-19 2018-08-09 Robert Bosch Gmbh Verfahren zum Betreiben einer Brennkraftmaschine
DE102011005672B4 (de) * 2011-03-17 2019-07-11 Continental Automotive Gmbh Verfahren, Vorrichtung und Computerprogramm zur elektrischen Ansteuerung eines Aktuators zur Bestimmung des Zeitpunkts eines Ankeranschlags
DE102015204686A1 (de) 2015-03-16 2016-09-22 Robert Bosch Gmbh Verfahren zur Steuerung der Kraftstoffzumessung

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3426799A1 (de) * 1984-07-20 1986-01-23 Robert Bosch Gmbh, 7000 Stuttgart Einrichtung zur regelung der einer brennkraftmaschine einzuspritzenden kraftstoffmenge

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4612597A (en) * 1984-12-19 1986-09-16 General Motors Corporation Circuit for controlling and indicating fuel injector operation
JP2623242B2 (ja) * 1987-01-16 1997-06-25 本田技研工業株式会社 電磁作動器駆動回路の電流検出装置
DE4308811B9 (de) * 1992-07-21 2004-08-19 Robert Bosch Gmbh Verfahren und Einrichtung zur Steuerung einer magnetventilgesteuerten Kraftstoffzumeßeinrichtung
DE4237706C2 (de) * 1992-11-07 1996-09-12 Mtu Friedrichshafen Gmbh Einrichtung zur Aufschlagzeitpunkt-Erkennung für den Anker eines Magnetventils

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3426799A1 (de) * 1984-07-20 1986-01-23 Robert Bosch Gmbh, 7000 Stuttgart Einrichtung zur regelung der einer brennkraftmaschine einzuspritzenden kraftstoffmenge

Also Published As

Publication number Publication date
DE59510199D1 (de) 2002-06-13
JPH09503353A (ja) 1997-03-31
DE4425987A1 (de) 1996-01-25
KR100378452B1 (ko) 2003-07-22
EP0720770A1 (fr) 1996-07-10
KR960704148A (ko) 1996-08-31
WO1996003758A1 (fr) 1996-02-08

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