EP0306839A1 - Appareil et méthode pour la commande des électro-aimants, en particulier dans les vannes d'injection - Google Patents

Appareil et méthode pour la commande des électro-aimants, en particulier dans les vannes d'injection Download PDF

Info

Publication number
EP0306839A1
EP0306839A1 EP88114289A EP88114289A EP0306839A1 EP 0306839 A1 EP0306839 A1 EP 0306839A1 EP 88114289 A EP88114289 A EP 88114289A EP 88114289 A EP88114289 A EP 88114289A EP 0306839 A1 EP0306839 A1 EP 0306839A1
Authority
EP
European Patent Office
Prior art keywords
electromagnet
voltage
pulse
source
initial pulse
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.)
Ceased
Application number
EP88114289A
Other languages
German (de)
English (en)
Inventor
Gernot Sikora
Franz Altinger
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.)
Sikora Gernot Dipl-Ing
Original Assignee
Sikora Gernot Dipl-Ing
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 Sikora Gernot Dipl-Ing filed Critical Sikora Gernot Dipl-Ing
Publication of EP0306839A1 publication Critical patent/EP0306839A1/fr
Ceased legal-status Critical Current

Links

Images

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
    • F02D41/20—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
    • F02D2041/2003—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
    • F02D2041/2013—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 by using a boost voltage source
    • 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

Definitions

  • the invention relates to a method and a device for controlling switching electromagnets, in particular in injection valves according to the preambles of the independent claims.
  • the fuel is supplied to the combustion chamber of the engine via electrically controlled injection valves.
  • the fuel metering and the map ignition takes place here via a central computer system, which calculates system data from various measured values supplied by sensors and delivers corresponding pulse-width-modulated control signals to an electromagnet of the valve.
  • Air flow meters, cooling water temperature meters, air inlet temperature meters, which measure the inlet temperature of the air at the entrance to the combustion chamber, air temperature meters, revolution mark transmitters, speed transmitters and throttle valve switches serve as sensors. Mixing the fuel into the air flow during the intake process of the associated cylinder gives the best technical results.
  • the ratio between the amount of fuel and the above-mentioned duty cycle of the pulse duration modulated signals or the injection angle should be as constant as possible. If the metered amount of fuel is plotted against the engine speed, with the duty cycle or injection angle as a parameter, the characteristic curves should be as linear as possible in the ideal state and have the same value for the metered fuel amount for all engine speeds for a given injection angle. The measurements that were carried out with known injection valves, however, showed considerable deviations from this ideal course. In known injection valves, the characteristic curves drop in the direction of higher engine speeds, these characteristic curves not only showing a linear but an irregular course.
  • the main components of conventional electrical injection valves are the nozzle part with the nozzle assembly, the winding of the electromagnet, the magnetic core, the armature, the return spring and the housing with force fabric line connections.
  • a constant fuel pressure is constantly present at the inlet of the injection valve, the return spring pressing against the nozzle assembly with such force that the injection valve is reliably closed.
  • an electrical voltage is applied to the winding of the electromagnet, a magnetic field builds up in a linear manner in this, so that the spring force is overcome at a certain point in time and the armature made of soft magnetic material is pulled axially to the core of the electromagnet.
  • the movement distance of the armature and thus of the associated nozzle assembly is mechanically limited by a disc.
  • the current in the winding of the electromagnet continues to increase linearly until the core is saturated and is now only limited by the series resistance of the injection valve or the resistance of the winding wire.
  • the field strength in the electromagnet is proportional to the product of the current and the number of turns divided by the length of the magnetic path.
  • the parameters for optimal control of the electromagnets have a diametrical course.
  • a large inductance is required for a given mechanical force in order to keep the current low and not to require complex control circuits.
  • the armature is removed from the core at the moment of switch-on and therefore a considerably higher field strength for the movement of the armature due to the degressive field density as a function of the distance is required than in the steady state.
  • the magnetic energy in the winding of the electromagnet which reached its maximum at the moment of switching off, must be reduced. If the dismantling takes place quickly, high voltage peaks are the result. If the degradation is damped, the counter-EMF causes a switch-off delay.
  • the switch-on delay due to the linear increase in current and the switch-off delay due to the stored magnetic energy are the two main disturbance parameters that are responsible for non-linear relationships in fuel metering.
  • the invention has for its object to provide a method and a device of the type in question, with which in particular the switch-on and switch-off delay of switched electromagnets, in particular in electrically controlled injection valves, can be reduced so that the switching characteristics are as optimal as possible.
  • the guiding principle of the invention is to be seen in this, by means of a specific control circuit without change or to change the component switched by the electromagnet to influence component-specific parameters and to reduce or eliminate the two above-mentioned interference parameters and thus to ensure the operation of the component in the permissible characteristic field.
  • the switching characteristics show approximately the desired horizontal course.
  • the electromagnet for example of an injection valve, is consciously overridden in the start-up phase within a defined and very short time frame, in particular independent of the switch-on duration, with an initial pulse of high voltage amplitude, the windings of the electromagnet not being thermally overloaded due to the short time of the initial pulse.
  • the unregulated supply voltage is transformed up to a regulated high voltage level, which generally corresponds to a multiple of the supply voltage.
  • the anchor moves very quickly in this way to the other position, which, for. B. is the open position of an injection valve.
  • the current rise is practically linear.
  • the switching movements of the armature can also be clearly reproduced over time.
  • the electromagnet is provided with only a minimum energy necessary for securely holding the armature, which is preferably done by means of a minimal and preferably constant holding current.
  • Overriding in the switch-on phase improves the switch-on delay by about a power of ten.
  • the switch-on override takes place with high voltages, which are between 40 and 80 V for injection valves in motor vehicles. These voltages cannot be reached in vehicle electrical systems, so that they have to be generated in separate circuit stages.
  • a preferred way of doing this is to convert the vehicle electrical system voltage from usually 12 V to the desired value using a transformer, as described in German patent application P 35 46 410.0.
  • the switch-off delay is reduced, since only a small amount of magnetic energy has to be dissipated.
  • the initial pulse of high voltage amplitude can in principle be generated in several ways using the vehicle electrical system voltage available in motor vehicles.
  • the generation of the initial pulse would thus be realized in a similar way to the generation of the ignition pulse.
  • this solution is not recommended, since then currents of approx. 20 amperes would occur on the primary side in a corresponding pulse transformer.
  • the necessary reinforced cross sections of the supply lines and large filter capacities are also disadvantageous.
  • electrolytic capacitors are only of limited suitability for such pulse applications, e.g. B. due to their high volume, their unfavorable temperature behavior and poor electrical switching behavior due to the inductance.
  • a storage capacitor is kept continuously at a high state of charge by means of a fast converter having a transformer, said storage capacitor delivering its charge to the injection valve in a pulsed manner via a switching device controlled by the control circuit.
  • a semiconductor is used as the circuit breaker.
  • a certain amount of energy is required to switch the electromagnet through quickly using the high voltage start pulse. Since the storage capacitor provides a relatively high intermediate voltage, only relatively small currents occur in the windings of the electromagnet, which are values between 2 to 4 times the continuous load current and due to the short-term nature of the initial pulse, there is no thermal overloading of the winding of the electromagnet result. With a predetermined permissible charge on the storage capacitor, a considerably smaller capacitance is permissible, which is of the order of a few microfarads. Such capacitors are available inexpensively in a polypropylene version. This type of capacitor has an extremely good pulse behavior, so that overall better values can be achieved than with electrolytic capacitors. The capacitor is charged relatively slowly by the fast converter and then releases its charge to the respective electromagnet when it is switched through.
  • a constant current source is preferably used to provide the low holding energy for the electromagnet.
  • electromagnets of injectors of an engine can be controlled sequentially, e.g. B.
  • the electromagnets of injectors of an engine, the converter, the switching device and the constant current source can be used in common for all injectors of an engine.
  • a separate circuit breaker is then available for each injection valve. This solution considerably simplifies the control circuit, since a separate control circuit is not necessary for each injection valve.
  • these injection valves are not changed in terms of design, so that existing control circuits can also be converted in the sense of the invention.
  • the corner frequency of the injector i.e. H. the frequency at which the injection valve no longer opens despite a control signal has been raised significantly.
  • the amount of fuel added can be dispensed in a single cycle instead of in several portions as in the prior art.
  • the power of the engine is increased, the consumption is reduced, the fuel is better utilized and, in particular, a substantially lower pollutant emission is achieved than previously.
  • the last-mentioned advantage makes it possible to reduce the pollutant emissions from engines to values that are otherwise only possible with other aids, such as. B. catalysts can be reached.
  • FIG. 1 shows a block diagram of an injection system 1 for an internal combustion engine.
  • the injection system has a plurality of electromagnetically actuated injection valves 2a to 2n, each with an electromagnet 3a to 3n, which are controlled with the aid of a computer 4 with control signals modulated by pulse duration, the computer calculating this control signal in a conventional manner on the basis of measured values which are supplied by a plurality of sensors .
  • the control signals of the computer 4 are fed via a pulse shaper 5 to a pulse source 6, the output pulses of which are fed via a circuit breaker 7a to 7n for each injector to the associated electromagnet 3a to 3n, with a respective one between the feed lines to the respective electromagnets 3a to 3n Filter network 17a to 17n is provided to reduce peak values of the supplied signals.
  • the circuit breakers are controlled via a decoder 8, which in turn receives control signals from the computer 4.
  • a data converter 9 controlled by the computer 4 is also provided, which is connected to the pulse shaper 5 and the decoder 8.
  • the pulse source 6 is with an input terminal 10 to the voltage U of an electrical system of a motor vehicle and with another input terminal 11 to a basic potential, for. B. mass.
  • the input terminal 10 is the same in a first branch of the pulse source 6 voltage / DC converter 12 and a pulse switch 13 as well as a constant current source 14 connected in parallel in another branch.
  • a filter capacitor or a capacitor arrangement 15 is also provided between the input terminals 10 and 11.
  • a storage capacitor 16 is located between the ground potential line connected to the input terminal 11 and a connection point between the converter 12 and the pulse switch 13.
  • the DC / DC converter 12 converts the on-board voltage U from z. B. 12 V in a higher voltage of z. B. 80 V around.
  • a transformer with a primary winding of 9 turns and a secondary winding of 72 turns is provided in the converter 12.
  • a demagnetization winding with 12 turns is also provided on the primary side.
  • the computer 4 outputs a pulse-width-modulated control signal to the pulse shaper 5 and the data converter 9 on the basis of the measured values calculated by the sensors and also a marking signal to the decoder 8.
  • the marking signal is used to control and switch the corresponding power switches 7a to 7n of the individual injection valves 2a to 2n closed for the time period specified by the pulse-width-modulated control signal.
  • the pulse shaper 5 in turn controls the pulse switch 13, which thereby closes a predetermined period of time, in this case 250 microseconds.
  • the charge of the storage capacitor 16 is supplied to the electromagnet 3a in a pulsed manner via the power switch 7a during this period.
  • the respective injection valve becomes only opened with a slight switch-on delay of approximately 0.25 msec.
  • the constant-current source 14 supplies a small holding current to the respective electromagnet 3a to 3n, which holds the injection valve in the open position. If the circuit breaker 7a is opened when the control signal drops, the injection valve is moved back into the closed position by a compression spring (not shown here), this being done with only a slight delay.
  • a predetermined amount of fuel determined by the duration of the control signal is injected from the injection valve.
  • FIG. 2 shows a signal diagram for a conventional control of an injection valve on the left-hand side, and a signal diagram for a control of the same injection valve according to the invention on the right-hand side.
  • the top line a shows part of a pulse duration modulated train of the control voltage supplied by the computer.
  • line b for the conventional control it can be seen that the current course through the electromagnet increases linearly until the current reaches a value at which the armature of the electromagnet overcomes the force of the compression spring in the injection valve and the injection valve is thereby opened.
  • the delay time between the first edge of the control voltage and the start of the opening is approximately 2 msec.
  • the switching current then rises further and falls with the end edge of the control voltage. At this moment the armature starts to move, which is initiated by the pressure spring of the injection valve.
  • the injection valve is completely closed again after a short delay. This cycle is repeated according to the course of the control voltage.
  • the sudden discharge of the storage capacitor 16 causes the current through the electromagnet of the respective injection valve to increase very rapidly and already reaches the switching current value after a delay time of approximately 0.25 msec, so that the injection valve is opened.
  • the opening process started shortly before, due to the high current values.
  • currents of up to 3 amperes flow in the primary winding of the respective electromagnet in the injection valve. Due to the short duration of 250 ⁇ sec, however, this does not lead to a thermal overload of the winding.
  • the constant current source 14 supplies a small holding current which holds the armature of the respective electromagnet 3a to 3n in the open position of the valve.
  • this holding current is significantly lower than the switching current necessary to initiate the switching of the valve. With the end flank of the control voltage, only the magnetic energy in the electromagnet, which is also low due to the low holding current, then needs to be dissipated, so that the valve is closed again after a very short delay time.
  • the instantaneous value of the field strength is the relevant parameter for opening the injection valve.
  • This instantaneous value is a function of the time constant, ie the ratio ses between the inductance and the resistance as well as the supply voltage.
  • the switch-on delay is therefore a function of these three variables. While the supply voltage in a control according to the prior art is a constant, it is a variable according to the invention, with the aid of which the switch-on delay also becomes variable.
  • the values for the switch-on and switch-off delay can be optimized by appropriate dimensioning of the amplitude of the initial pulse and its duration.
  • the amount of injection in conventional control differs significantly from the course of the control voltage due to the long delay time when the injection valve is switched on. Since the delay time when switching on is constant regardless of the course of the control voltage, it is obvious that there is no proportionality between the time course of the control voltage and the time course of the injection quantity. In contrast to this, according to the invention, the short delay time when switching on ensures an approximately optimal proportionality between the time course of the injection quantity and the control voltage.
  • Fig. 3 a characteristic diagram for the flow rate per unit of time plotted against the engine revolution per minute with the injection angle as a parameter in a conventional control and with broken lines in a control according to the invention of the same injection valve are shown with solid lines. It can clearly be seen that with injection angles of up to 144 ° the characteristic curves drop in the direction of higher speeds with conventional control and only with one injection angle of 162 ° above about 4000 revolutions per minute. The desired linear, horizontal course is not achieved. It can be seen that, however, this is approximately the case for all the characteristic curves in the case of a control according to the invention. The characteristic curves have good linearity, which brings the advantages mentioned above.
  • FIG. 4a shows the theoretically determined error in percent in fuel metering with conventional control of an injection valve with a determined switch-on delay of 2 msec
  • FIG. 4b the error in percent with fuel metering when controlling the same injector according to the invention, each with the Injection angle as a parameter.
  • This error is essentially due to the switch-on delay of the injection valve. It can be seen that the error with a conventional control has considerable values even at low revolutions per minute, while this error is significantly smaller with a control according to the invention and assumes noticeable values only for small injection angles up to approximately 40 °.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
EP88114289A 1987-09-07 1988-09-01 Appareil et méthode pour la commande des électro-aimants, en particulier dans les vannes d'injection Ceased EP0306839A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3729954 1987-09-07
DE19873729954 DE3729954A1 (de) 1987-09-07 1987-09-07 Verfahren und einrichtung zum ansteuern von einspritzventilen

Publications (1)

Publication Number Publication Date
EP0306839A1 true EP0306839A1 (fr) 1989-03-15

Family

ID=6335430

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88114289A Ceased EP0306839A1 (fr) 1987-09-07 1988-09-01 Appareil et méthode pour la commande des électro-aimants, en particulier dans les vannes d'injection

Country Status (3)

Country Link
EP (1) EP0306839A1 (fr)
DE (1) DE3729954A1 (fr)
WO (1) WO1989002523A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990015922A1 (fr) * 1989-06-20 1990-12-27 Robert Bosch Gmbh Circuits de commande de consommateurs electromagnetiques
WO1991000421A1 (fr) * 1989-06-29 1991-01-10 Robert Bosch Gmbh Circuit d'alimentation pour la mise en ×uvre d'un consommateur electromagnetique
EP0431272A2 (fr) * 1989-11-03 1991-06-12 MAN Nutzfahrzeuge Aktiengesellschaft Méthode et dispositif d'injection de carburant dans la chambre de combustion d'un moteur à combustion interne
EP0765438B1 (fr) * 1995-04-12 2001-09-26 Robert Bosch Gmbh Procede et dispositif de commande d'un consommateur electromagnetique
WO2003023211A1 (fr) * 2001-08-16 2003-03-20 Robert Bosch Gmbh Procede et dispositif de commande d'un consommateur electro-magnetique
US7508645B2 (en) * 2004-07-09 2009-03-24 Abb Technology Ag Method and apparatus for operating a magnetic actuator in a power switching device
DE102012112841A1 (de) 2012-12-21 2014-06-26 Hilite Germany Gmbh Steuerungsverfahren und Steuervorrichtung für einen Elektromagneten

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3923487A1 (de) * 1989-07-15 1991-01-24 Fev Motorentech Gmbh & Co Kg Verfahren zum ansteuern von stellgliedern
DE4014313A1 (de) * 1990-05-04 1991-11-07 Bosch Gmbh Robert Stellglied
DE4130711A1 (de) * 1991-09-14 1993-03-18 Kloeckner Humboldt Deutz Ag Steuerung elektromagnetischer ventile

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3889162A (en) * 1974-02-04 1975-06-10 Ledex Inc Solenoid driving means
EP0034076A2 (fr) * 1980-02-01 1981-08-19 The Bendix Corporation Système d'activation de solénoide
EP0075303A2 (fr) * 1981-09-21 1983-03-30 Hitachi, Ltd. Circuit d'attaque pour valve d'injection de carburant
USRE31391E (en) * 1971-10-04 1983-09-20 Motorola, Inc. Voltage and current regulator with automatic switchover
FR2533263A1 (fr) * 1982-09-16 1984-03-23 Renault Dispositif de commande d'organes electromagnetiques a actionnement rapide, tels qu'electrovannes ou injecteurs pour moteurs a combustion interne
EP0159504A2 (fr) * 1984-04-24 1985-10-30 Trw Inc. Dispositif d'injection de carburant utilisant un convertisseur de puissance électrique

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2423258C3 (de) * 1974-05-14 1978-09-07 Siemens Ag, 1000 Berlin Und 8000 Muenchen Schaltungsanordnung zur Stromversorgung eines induktiven Verbrauchers
FR2370216A1 (fr) * 1976-11-05 1978-06-02 Renault Dispositif de commande par programme de courant de plusieurs electrovannes a fonctionnement asynchrone simultane ou non
DE2932859A1 (de) * 1979-08-14 1981-03-26 Robert Bosch Gmbh, 70469 Stuttgart Einrichtung zum steuern des stromes durch einen induktiven verbraucher, insbesondere ein magnetventil im kraftstoffzumesssystem einer brennkraftmaschine
DE3415649A1 (de) * 1984-04-27 1985-11-07 Dr. H. Tiefenbach Gmbh & Co, 4300 Essen Schaltungsanordnung zur betaetigung eines elektromagnetischen ventils

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE31391E (en) * 1971-10-04 1983-09-20 Motorola, Inc. Voltage and current regulator with automatic switchover
US3889162A (en) * 1974-02-04 1975-06-10 Ledex Inc Solenoid driving means
EP0034076A2 (fr) * 1980-02-01 1981-08-19 The Bendix Corporation Système d'activation de solénoide
EP0075303A2 (fr) * 1981-09-21 1983-03-30 Hitachi, Ltd. Circuit d'attaque pour valve d'injection de carburant
FR2533263A1 (fr) * 1982-09-16 1984-03-23 Renault Dispositif de commande d'organes electromagnetiques a actionnement rapide, tels qu'electrovannes ou injecteurs pour moteurs a combustion interne
EP0159504A2 (fr) * 1984-04-24 1985-10-30 Trw Inc. Dispositif d'injection de carburant utilisant un convertisseur de puissance électrique

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990015922A1 (fr) * 1989-06-20 1990-12-27 Robert Bosch Gmbh Circuits de commande de consommateurs electromagnetiques
WO1991000421A1 (fr) * 1989-06-29 1991-01-10 Robert Bosch Gmbh Circuit d'alimentation pour la mise en ×uvre d'un consommateur electromagnetique
US5150687A (en) * 1989-06-29 1992-09-29 Robert Bosch Gmbh Supply circuit for operation of an electromagnetic load
EP0431272A2 (fr) * 1989-11-03 1991-06-12 MAN Nutzfahrzeuge Aktiengesellschaft Méthode et dispositif d'injection de carburant dans la chambre de combustion d'un moteur à combustion interne
EP0431272A3 (en) * 1989-11-03 1991-10-16 Man Nutzfahrzeuge Aktiengesellschaft Method and device to inject fuel in the combustion chamber of an internal combustion engine
EP0765438B1 (fr) * 1995-04-12 2001-09-26 Robert Bosch Gmbh Procede et dispositif de commande d'un consommateur electromagnetique
WO2003023211A1 (fr) * 2001-08-16 2003-03-20 Robert Bosch Gmbh Procede et dispositif de commande d'un consommateur electro-magnetique
US7089915B2 (en) 2001-08-16 2006-08-15 Robert Bosch Gmbh Method and device for controlling an electromagnetic consumer
KR100857638B1 (ko) * 2001-08-16 2008-09-08 로베르트 보쉬 게엠베하 전자기 소비기를 제어하기 위한 방법 및 장치
US7508645B2 (en) * 2004-07-09 2009-03-24 Abb Technology Ag Method and apparatus for operating a magnetic actuator in a power switching device
DE102012112841A1 (de) 2012-12-21 2014-06-26 Hilite Germany Gmbh Steuerungsverfahren und Steuervorrichtung für einen Elektromagneten
DE102012112841B4 (de) 2012-12-21 2023-11-30 Hilite Germany Gmbh Steuerungsverfahren und Steuervorrichtung für einen Elektromagneten

Also Published As

Publication number Publication date
DE3729954C2 (fr) 1989-12-21
WO1989002523A1 (fr) 1989-03-23
DE3729954A1 (de) 1989-03-16

Similar Documents

Publication Publication Date Title
DE102009006179B4 (de) Schaltungsanordnung zur Ansteuerung eines Einspritzventils
WO1987005075A1 (fr) Procede et circuit d'excitation de consommateurs electromagnetiques
WO1995028721A1 (fr) Procede et dispositif de commande de consommateurs electromagnetiques
EP0764238B1 (fr) Procede et dispositif pour la commande d'un consommateur electromagnetique
DE4322199C2 (de) Verfahren und Einrichtung zur Ansteuerung eines elektromagnetischen Verbrauchers
DE2538301C3 (de) Steuereinrichtung zum Steuern einer elektromagnetisch betätigten Einspritzdüse für eine Brennkraftmaschine
DE19814594A1 (de) Verfahren und Vorrichtung zum Laden und Entladen eines piezoelektrischen Elements
DE2805876C2 (fr)
EP0306839A1 (fr) Appareil et méthode pour la commande des électro-aimants, en particulier dans les vannes d'injection
WO1996027198A1 (fr) Dispositif servant a la commande d'au moins un consommateur electromagnetique
DE3623908C2 (fr)
DE1576280C3 (de) Brennstoffeinspritzvorrichtung für Brennkraftmaschinen mit direkter oder indirekter Einspritzung
DE4018320C2 (de) Ansteuerschaltung für einen elektromagnetischen Verbraucher
WO2008116746A1 (fr) Circuit de commande et procédé de commande pour un élément piezoélectrique
DD147388A5 (de) Kraftstoffeinspritzanlage mit elektrisch gesteuerten pumpe-dueseneinrichtungen fuer verbrennungsmotoren
DE69033215T2 (de) Verfahren und gerät zur betriebssteuerung einer solenoidwicklung
DE4209474A1 (de) Einrichtung zur Steuerung wenigstens eines elektrischen Verbrauchers in einem Fahrzeug
DE1788063C3 (de) Verfahren und Vorrichtung zum Steuern der Impulsdauer von sich wieder holenden elektrischen Rechtecksteuenm pulsen
DE3924985A1 (de) Vollelektronische zuendeinrichtung fuer eine brennkraftmaschine
EP0945610A2 (fr) Méthode et dispositif pour commuter une inductance
DE10336606A1 (de) Stellverfahren und Stellvorrichtung für einen Aktor
WO1996003758A1 (fr) Procede et dispositif permettant d'exciter un consommateur electromagnetique
DE2706436C2 (fr)
EP0854281B1 (fr) Dispositif de pilotage d'au moins un consommateur électromagnetique
DE2458666C3 (de) Regeleinrichtung

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT DE ES FR GB IT SE

17P Request for examination filed

Effective date: 19890817

17Q First examination report despatched

Effective date: 19900118

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED

18R Application refused

Effective date: 19920101