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WO1987005075A1 - Procede et circuit d'excitation de consommateurs electromagnetiques - Google Patents

Procede et circuit d'excitation de consommateurs electromagnetiques Download PDF

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Publication number
WO1987005075A1
WO1987005075A1 PCT/DE1987/000053 DE8700053W WO8705075A1 WO 1987005075 A1 WO1987005075 A1 WO 1987005075A1 DE 8700053 W DE8700053 W DE 8700053W WO 8705075 A1 WO8705075 A1 WO 8705075A1
Authority
WO
WIPO (PCT)
Prior art keywords
capacitor
electromagnetic
consumer
electromagnetic consumer
switching
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
PCT/DE1987/000053
Other languages
German (de)
English (en)
Inventor
Konrad Eckert
Edwin Fauser
Hans Kubach
Fridolin Piwonka
Helmut Rembold
Günter Schirmer
Bernhard Sprenger
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 WO1987005075A1 publication Critical patent/WO1987005075A1/fr
Anticipated expiration legal-status Critical
Priority to KR1019890700939A priority Critical patent/KR950013066B1/ko
Ceased legal-status Critical Current

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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
    • F02D41/20—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
    • F02D2041/2006—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 capacitor
    • 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
    • F02D2041/2068—Output circuits, e.g. for controlling currents in command coils characterised by the circuit design or special circuit elements
    • F02D2041/2082—Output circuits, e.g. for controlling currents in command coils characterised by the circuit design or special circuit elements the circuit being adapted to distribute current between different actuators or recuperate energy from actuators
    • 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
    • H01F7/1805—Circuit arrangements for holding the operation of electromagnets or for holding the armature in attracted position with reduced energising current
    • H01F7/1816—Circuit arrangements for holding the operation of electromagnets or for holding the armature in attracted position with reduced energising current making use of an energy accumulator
    • H01F2007/1822—Circuit arrangements for holding the operation of electromagnets or for holding the armature in attracted position with reduced energising current making use of an energy accumulator using a capacitor to produce a boost voltage

Definitions

  • the invention relates to a method for controlling electromagnetic consumers with at least one magnetic coil in accordance with the preamble of the main claim and a circuit for carrying out the method in accordance with the preamble of claim 10.
  • the current flowing through a magnetic coil cannot change as quickly as desired.
  • the rate of change is limited by the inductance of the coil.
  • the current increases following an e-function and asymptotically approaches a static end value.
  • the current cannot change abruptly when switching off. If a switch is opened in the coil circuit, ent there is a high inductive voltage peak if overvoltages are not avoided by suitable measures.
  • a generally known possibility is to connect a freewheeling diode parallel to the magnetic coil, which is arranged in such a way that the current flowing in the coil can flow back into the power supply, for example, after the coil has been switched off.
  • the entire inductive energy of the magnet coil is dissipated via this current path, so that heat is generated partly in the current source and partly in the free-wheeling diode without special precautions.
  • the on and off times of the electromagnetic consumer are long. In this circuit arrangement, the time required to build up and break down the magnetic field is essentially determined by the inductance and the operating voltage.
  • the operating voltage is transformed to higher values in a known method.
  • This technology is used in particular in battery-operated circuits, since the operating voltage is specified here.
  • the disadvantage of this method is the increased circuit complexity and the additional upload time.
  • the method and the circuit according to the invention have the advantage that the energy balance is improved and the switch-on time is shortened by a rapid magnetic field build-up. This is achieved in that the existing inductive after switching off an electromagnetic consumer Energy of the current-carrying magnet coil is used for switching on an electromagnetic consumer. This reduces the power loss in the circuit and thus reduces the cooling effort. The reduced thermal load also increases operational safety.
  • the switch-on process is shortened in that the magnetic field build-up is accelerated by a voltage surge, with few additional electronic components being required.
  • the method according to the invention and the associated circuit are particularly suitable for fast electromagnetic signal boxes, as are used in particular in single-coil or multi-coil solenoid valves.
  • the inductive energy is temporarily stored in a capacitor as capacitive energy.
  • the free choice of capacitance makes it possible to choose an optimum between minimal power loss and excessive voltage to accelerate the magnetic field build-up.
  • a controllable switch is used in connection with the capacitor. It is then possible to freely select the switch-on time of the magnet coil whose magnetic field structure is to be supported with the capacitive energy. Furthermore, one is then free to choose the coil to be switched on, in particular it can be the same coil whose inductive energy was previously in the capacitor was saved.
  • a further energy saving and an additional increase in the switching speed of the electromagnetic consumer or of the electromagnetic signal box are obtained in a further preferred embodiment of the method by the switching operation, in which different current levels of the current flowing through the magnetic coil can be set by switching the controllable switches on and off are.
  • the mean value of the current can be adapted to the operating states of the electromagnetic consumer in switching operation.
  • the use of the capacitor has advantages in that a part of the inductive energy is stored as capacitive energy after each switching operation.
  • the capacitor and the controllable switch connected to it can be dispensed with.
  • the excessive voltage occurs at a resistor arranged in parallel with the magnetic coil of the electromagnetic consumer.
  • Figure 1 shows a first embodiment of the circuit
  • Figure 2 is a timing diagram of the circuit of Figure 1;
  • FIGS. 3 and 4 further embodiments of the circuit
  • Figure 5 is a timing diagram of the circuit of Figure 4.
  • FIG. 7 shows another embodiment of the circuit
  • Figure 9 shows another embodiment of the scarf device.
  • FIG. 1 shows a magnetic coil 10 with a first and second magnetic coil connection 11 and 12.
  • the second magnetic coil connection 12 can be connected to a first power supply connection 14 by means of a first controllable switch 13.
  • the first magnetic coil connection 11 is connected to a second power supply connection 15 via a first diode 16.
  • a second diode 18 is connected to a first connection 19 of a first capacitor 17, the second connection 20 of which is connected to the first power supply connection 14.
  • the first connection 19 of the first capacitor 17 can be connected to the first magnetic coil connection 11 via a second controllable switch 21
  • the first and second power supply connections 14 and 15 are bridged by a second capacitor 22.
  • a control circuit 25 is provided which actuates the two controllable switches 13, 21 via two control lines 23, 24.
  • FIG. 2 shows switching positions S 1 and S 2 of the first and second controllable switches 13, 21, the current i flowing through the magnet coil 10 and the voltage u across the first capacitor 17 as functions of the time t.
  • FIG. 3 shows a further embodiment of the circuit according to the invention, in which two solenoids 10, 10a are driven in push-pull.
  • the circuit is composed of two assemblies which are constructed in accordance with the arrangement shown in FIG. 1. One difference is that the connection 19 of the first capacitor 17 via the second controllable switch 21 with the first magnet coil connection 11a of the magnet coil 10a, or the first connection 19a of the first capacitor 17a via a second controllable switch 21a with the first connection 11 Solenoid 10 is connected.
  • a control circuit 40 is provided, which controls the two first controllable switches 13 and 13a and the two second controllable switches 21 and 21a via four control lines 41 to 44.
  • FIG. 4 shows a further exemplary embodiment of the circuit which was developed from the circuit shown in FIG. 3. Reference is therefore made to the comments on FIG. 3.
  • a control circuit 50 controls the controllable switches 13, 13a, 21 and 21a via control lines 51, 52, 53, 54.
  • the capacitors 17 and 17a separately assigned to each magnetic coil 10 or 10a were replaced by a capacitor 17 ', the first connection 19' of which is connected to the second power supply connection 15 via a diode 50 and the second connection 20 'of which is connected to the second first power supply connection 14 is connected.
  • FIG. 5 shows a time diagram of the circuit according to FIG. 4, from which the time profile of the currents i 1 and i 2 flowing through the magnetic coils 10 and 10a and the voltage u C dropping across the capacitor 17 'can be seen.
  • Figure 6 shows an embodiment of a circuit which differs from the circuit of Figure 3 only in that the controllable switches 21, 21a are omitted or bridged by wire.
  • a second diode 18 connects the second magnetic coil connection 12 of the magnetic coil 10 directly to the first magnetic coil connection 11a of the magnetic coil 10a.
  • the second diode 18a connects the second magnet coil connection 12a of the magnet coil 10a directly to the first magnet coil connection 11 of the magnet coil 10.
  • a control circuit 55 controls the two controllable switches 13 and 13a via its two control lines 56, 57.
  • FIGS. 7 and 8 show the course of the currents i 1 and i 2 flowing through the magnetic coils 10, 10a with different types of control.
  • Figure 9 shows a further embodiment of the circuit according to the invention. This differs from that shown in Figure 3 in that the two first capacitors 17 and 17a and the two second controllable switches 21 and 21a are omitted.
  • the second diode 18 connects the second magnet coil connection 12 of the magnet coil 10 directly to the first magnet coil connection 11a of the magnet coil 10a; the second diode 18a connects the second magnetic coil connection 12a of the magnetic coil 10a directly to the first magnetic coil connection 11 of the magnetic coil 10.
  • a series circuit which consists of a resistor 62, 62d and a third diode 64, 64a .
  • a control circuit 70 controls the two controllable switches 13 and 13a via its two control lines 72 and 74.
  • the circuit according to FIG. 1 is explained on the basis of the diagrams in FIG. 2.
  • the magnet coil 10 with its first and second magnet coil connections 11 and 12 is part of an electromagnetic consumer, e.g. an electromagnetic signal box, which preferably knows two stable switching states.
  • an electromagnetic consumer e.g. an electromagnetic signal box
  • One application in which fast switching is required is, for example, in the case of fuel injection valves, by means of which fuel is metered in internal combustion engines.
  • the first controllable switch 13 As an initial state it is assumed that the first controllable switch 13 is open and no current i 1 flows in the magnet coil 10.
  • the first controllable switch 13 receives a closing signal generated by the control circuit 25 via the control line 23.
  • the switch 13 is a semiconductor component that can be switched on and off, for example a transistor.
  • a current i 1 begins in the magnetic coil 10 via the first diode 16 and the closed to flow its transistor 13.
  • the forward direction of the first diode 16 is determined such that current flows through it when the potential at the second power supply connection 15, that is to say at the anode of the diode 16, is higher than at the first magnet coil connection 11, that is to say at the cathode of the diode 16.
  • the rise time is dependent on the ohmic resistance of this circuit, on the internal resistance of the current source lying between the first and second power supply connections 14 and 15, on the inductance L 1 and the resistance R 1 of the magnet coil 10 and the operating voltage U b .
  • the final value of the current is given by the ohmic resistance of the series circuit, consisting of the first diode 16, the solenoid 10 and the closed transistor 13.
  • the transistor 13 receives a device 23 from the control circuit 25 via the control 1 issued opening signal.
  • the current i 1 in the magnetic coil 10 cannot change abruptly. It therefore continues to flow through the second diode 18 into the first capacitor 17.
  • the forward direction of the second diode 18 is determined such that current can flow through it if the potential at the second magnet coil connection 12, that is to say at the anode of the diode 18, is higher than at the first connection 19 of the first capacitor 17, that is to say the cathode of the diode 18
  • the capacitor 17 collects the charge and a voltage u is produced, the height of which is given by the capacitance of the first capacitor 17 and the amount of charge introduced.
  • the value from which the voltage u across the capacitor 17 increases after the time t 2 is slightly below the operating voltage U b .
  • the transistor 13 and simultaneously the second controllable switch 21 are closed via the control lines 23 and 24.
  • a higher voltage is available at the first magnet coil connection 11, which voltage is equal to the voltage u at the first capacitor.
  • the higher voltage on the magnetic coil 11 results in a rapid current rise which continues until the charge has flowed from the first capacitor 17 via the closed second controllable switch 21, ie u has assumed approximately the value of U.
  • the first magnetic coil connection 11 is separated from the second power supply connection 15 by the first diode 16 which is acted on in the reverse direction.
  • the current in the magnet coil 10 changes, starting from the instantaneous value, in accordance with the time constant available at the time t 1 . If the coil current has not yet reached a stationary end value during the capacitor discharge, it rises again after the capacitor 17 has discharged with the slower time constant based on U b . If, as shown in FIG. 2, the current value overshoots during capacitor discharge, the current drops to a stationary value after the discharge. For fast switching behavior, overshoot 1 is desirable.
  • the first capacitor 17 discharges to a voltage value which is given by the operating voltage U b minus the lock voltage of the first diode 16.
  • the switch 21 opens without another control signal in the zero current crossing. Is a second controllable switch 21 Transistor provided, then this is supplied via the control line 24 from the control circuit 25, an opening signal.
  • the second capacitor 22 parallel to the power supply between the first and second power supply connections 14 and 15 has the task of keeping the internal resistance of the power source low at the moment of switching on t 1 and t 3 .
  • the circuit for a single-coil signal box according to FIG. 1 can be expanded according to FIG. 3 for a two- or multi-coil signal box.
  • the inductive energy present when the magnet coil 10 is switched on is stored in the first capacitor 17 after the magnet coil 10 has started to be switched off. This energy is used to rapidly build up the magnetic field in the other magnet coil 10a.
  • the first connection 19 of the first capacitor 17 is connected to the first coil connection 11a via the first controllable switch 21 during the switching-on process of the other magnet coil 10a.
  • the magnetic energy is stored in the other first capacitor 17a after the start of the shutdown process of the other magnet coil 10a. It then becomes a quick one Magnetic field structure used in the magnetic coil 10.
  • the first connection 19a of the other first capacitor 17a is connected via the other second controllable switch 21a to the first coil connection 11 of the magnet coil 10 during its switch-on process.
  • the solenoids 10 and 10a are switched on and off alternately, for example in push-pull. If the greatest possible energy saving is dispensed with, this circuit can also be used in “overlapping” operation, ie a current flows in both magnet coils 10 and 10a during short periods of time.
  • the control circuit 40 here has four control lines 41 to 44, which are used to control the four controllable switches 13, 13a, 21 and 21a.
  • the two second controllable switches 21 and 21a can be thyristors which only require a switch-on pulse and switch off at the next current zero crossing without a switch-off pulse.
  • Semiconductor components that can be switched on or off such as transistors or thyristors that can be switched on and off, can also be used here, with which, in overlapping operation, a defined separation of the two magnet coil circuits results.
  • the circuit according to FIG. 4 is explained using the time diagram shown in FIG. 5.
  • the capacitor 17 ' is charged to a voltage of U C soll > U b by one or more preceding switching operations at the time t t t 1 , as shown in FIG. 2 for t t t 3 .
  • the controllable switches 13 and 21a are closed at the time t 1 t t t t 3 .
  • the capacitor 17 'is thus discharged via the solenoid 10.
  • the rise of i 1 is very fast, especially with U C >> U b . Neglecting the voltage drop at the controllable switches for the current rise, the following equation applies:
  • R 1 denotes the resistance and L 1 the inductance of the magnetic coil 10 and u C denotes the voltage stored in the capacitor 17 '.
  • the current i 1 approaches the value u C / R asymptotically.
  • the diodes 16a and 18a are conductive.
  • the capacitor 17 ' is charged via it with the current i 2 as long as i 2 > i 1 .
  • the voltage u C across the capacitor 17 'therefore rises for a short time
  • R 2 denoting the resistance
  • L 2 denoting the inductance of the magnetic coil 10a.
  • the voltage in the capacitor 17 ' is now increased in that the controllable switch 13 is switched off for t 4 t t t t 5 .
  • the diodes 16 and 18 are in the conductive state, so that the capacitor 17 'is charged with i 1 , i 1 starting from i max in case 1 and from an underlying value in case 2 and to a holding current i H falls off.
  • the holding current i H is selected so that the electromagnetic consumer remains in the activated state despite the reduction in the current i 1 flowing through the magnetic coil 10. It can be seen from FIG. 5 that a maximum limit value i H max and a minimum limit value i H min are specified for i H.
  • Switch 21a off and switch 13 switched on, so that i 1 increases again.
  • i 2 again reaches the value i H max , so that current i 1 is reduced again by switching on switch 21a and switching off switch 13.
  • i 1 is always kept at a predetermined value i H min i i 1 i i H max .
  • the switch 13 is switched on instead of the switch 21 a in the time range t 5 t t t t 6 , so that new energy is drawn from the voltage source, which then can be fed into the capacitor 17 'until finally the required total energy is reached.
  • the controllable switch 13 is also turned on in case 1 when the current i l drops to i H min before u C has reached the value U C soll . This increases i l again. In a next cycle, i l is then reduced again and the inductive energy is fed to the capacitor 17 '.
  • i l and u C can be set to any desired value of u C or mean value for i l by suitable control of switches 13 and 21a.
  • the controllable switches 13 and 21a are opened and the switches 13a and 21 are closed, so that the charging of the capacitor 17 'is available for a rapid increase in i 2 .
  • the diode 60 connected to the power supply and to the capacitor 17 ' is arranged such that the capacitor 17' is charged to U b immediately after the power supply is switched on, so that the transistors used as controllable switches 13 and 13a do not have an inverse voltage which is too high be charged.
  • the anode of the diode 60 is connected to the second power supply termination 15 and the cathode of the diode 60 to the first connection 19 'of the capacitor 17'.
  • the control of the circuit should take place in such a way that the currents flowing through the magnet coils 10 and 10a assume an upper holding current i HO or a lower holding current i HU .
  • the magnet coil 10 is to be excited in FIGS. 7 and 8.
  • the controllable switch 13 is closed and the switch 13a is opened.
  • the currents i 1 and i 2 flow in the magnet coils 10, 10a.
  • the current i 1 flows via the controllable switches 13 and i 2 via the diodes for t ⁇ t 1 16a and 18a.
  • the capacitor 17 is charged to a value u C > U b since the diode 16 blocks. If a small capacitance is selected for the capacitor 17, u C becomes particularly large.
  • i 2 falls very quickly, while i 1 increases rapidly. Due to the rapid change in current and the resulting change in force in the time interval t 1 ⁇ t ⁇ t 2 , the armature lifts off the stop. The forces increase during the movement without any further increase in current.
  • the sensible maximum current i max is reached for i 1 in FIGS . 7 and 8.
  • the controllable switch 13 is opened, the switch 13a remains open.
  • i 1 decreases, while i 2 increases again due to the energy transfer.
  • switch 13 is closed so that i 1 rises again while i 2 decreases.
  • i 1 decreases again, while i 2 increases. Due to the clocked control, the holding currents can be set to any desired value 0 ⁇ i ⁇ i max
  • T 1 t 13 a / t tot , where t 13 denotes the time that the switch
  • i HO i HU / (1-T 1 ).
  • T 1 0.75
  • This period t 6 ⁇ t A t 7 in FIG. 7 must, however, be given before each switchover.
  • An advantage of this control is that the effects of the clocking have decayed at time t 7 and cannot adversely affect the switching of the solenoids 10 and 10a.
  • FIG. 1 Another embodiment of the circuit according to the invention is shown in FIG. This circuit is particularly suitable for a two-coil signal box.
  • the two first capacitors 17, 17a and the two second controllable switches 21, 21a have been omitted.
  • the switch-on time of one coil after switching off the other coil can therefore no longer be freely selected.
  • the circuit according to FIG lines consisting of a resistor 62, 62a and a third diode 64, 64a supplemented, which are parallel to the two solenoids 10, 10a.
  • a simplification results with respect to the control circuit 70, which need only have two control lines 72, 74, via which the two controllable switches 13, 13a are actuated.
  • the inductive energy can no longer be stored temporarily, but is instead used directly to build up the magnetic field in the other magnet coil.
  • the circuit according to FIG. 9 works as follows: First, the first controllable switch 13, preferably a transistor, is closed. A current i 1 then flows in the magnetic coil 10. After the transistor 13 has received an opening signal from the control circuit 70 via the control line 72, the current i 1 in the magnet coil 10 no longer flows via the transistor 13 to the first power supply connection 14 but now via the second diode 18 directly to the first magnet coil connection 11 a of the magnet coil 10a, which is still currentless at this point in time, although the second controllable switch 13a, also preferably a transistor, has received a closing signal from the control circuit 70 via the control line 74 at the same time as the opening signal for the switch 13.
  • the current i 1 originating from the magnetic coil 10 can only flow via the current path consisting of the resistor 62a and the third diode 64a when the transistor 13a is switched on.
  • the forward direction of the third diode 62, 62a is determined such that current flows through it when the potential at the first magnet coil connection 11, 11a, that is to say at the anode of the diode 62, 62a, is higher than at the second magnet coil connection 12 or at the cathode the diode 62, 62a.
  • a voltage increase results as the product of the resistance value of the resistor 64a and the current i 1 flowing through the resistor 64a. This excessive voltage leads to an accelerated current build-up in the magnet coil 10a.
  • the transistor 13a now receives an opening signal and at the same time the transistor 13 receives a closing signal, the magnetic field build-up in the magnetic coil 10 takes place again in the manner described, the inductive energy of the magnetic coil 10a being used for the switching-on process of the magnetic coil 10.
  • the resistance value of the two resistors 62, 62a is dimensioned in such a way that the excess voltage cannot assume too high values. In one embodiment, it was 100 ⁇ , which resulted in a voltage surge of about 200 V when the coil current was in the steady state of 2 A.
  • clocked operation means that the first controllable switch 13 or the first two controllable switches 13 and 13a can also be switched on or off in the stationary operating states of the electromagnetic consumer. If the clock frequency is sufficiently high, a certain average value of the current through the magnet coil 10, 10a is set depending on the ratio of the switch-on to the switch-off period. The capacitor 17, 17 'or the two capacitors 17 and 17a are charged somewhat after the start of each switch-off process.
  • This switching operation makes it possible to assign different current and thus force levels of the electromagnets to the different operating states, namely stroke to one position, holding state in this position, return stroke to the other position and holding state in the other position, with electromagnetic manipulated values.
  • the current in the magnet coil 10 or in the magnet coils 10, 10a is completely switched on or off during the stroke and return stroke phases.
  • an average current i HU is then set in the switching position that corresponds to the de-energized state so that the switching function is still guaranteed. Switching to the other position, which corresponds to the strora flow case, is then possible in a short time by overcoming a minimal force.
  • a return to the previous position is then also quickly possible by overcoming a small force.
  • This example is a system in which the current has four different levels: zero, holding current i HU for one position, maximum value i max and holding current i HO for the other position.
  • the clocked activation of the controllable switches 13, 13a also makes it possible to compensate for the predetermined holding current values or the value of i max even with changes in the voltage supply that occur during the driving operation of a motor vehicle by a suitable change in the clock ratio.
  • the clock ratio is varied in the range of 0.75 t t 1 1 1.
  • a switching arrangement according to FIG. 3 resulted in a reduction in the switching time of a double solenoid valve from 0.31 ms to 0.24 ms in clocked operation.
  • the magnet coils 10, 10a each had a nominal current of 20 A and had an inductance of 300 ⁇ H.
  • the capacitance of the first two capacitors 17 and 17a was 20 ⁇ F each.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Magnetically Actuated Valves (AREA)
  • Relay Circuits (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Electronic Switches (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)

Abstract

Dans un procédé d'excitation de consommateurs électromagnétiques comportant au moins une bobine magnétique, notamment de soupapes injectrices actionnables magnétiquement, par l'intermédiaire d'au moins un commutateur pouvant être commandé, on utilise l'énergie inductive présente, après mise hors circuit d'un consommateur électromagnétique, dans la bobine magnétique de ce dernier (10, 10a) traversée par le courant, pour mettre en circuit un consommateur électromagnétique. De plus, un circuit permettant la mise en oeuvre du procédé est caractérisé en ce qu'au moins un condensateur (17, 17a, 17') relié à un consommateur électromagnétique sert à emmagasiner temporairement l'énergie inductive présente dans la bobine magnétique (10, 10a) d'un consommateur électromagnétique lors de sa mise hors circuit.
PCT/DE1987/000053 1986-02-18 1987-02-16 Procede et circuit d'excitation de consommateurs electromagnetiques Ceased WO1987005075A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019890700939A KR950013066B1 (ko) 1986-02-18 1988-09-17 분자량 전환 전기장치

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3605095 1986-02-18
DEP3605095.4 1986-02-18
DEP3702680.1 1987-01-30
DE19873702680 DE3702680A1 (de) 1986-02-18 1987-01-30 Verfahren und schaltung zur ansteuerung von elektromagnetischen verbrauchern

Publications (1)

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WO1987005075A1 true WO1987005075A1 (fr) 1987-08-27

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PCT/DE1987/000053 Ceased WO1987005075A1 (fr) 1986-02-18 1987-02-16 Procede et circuit d'excitation de consommateurs electromagnetiques

Country Status (4)

Country Link
JP (1) JPH01501649A (fr)
KR (1) KR950013066B1 (fr)
DE (1) DE3702680A1 (fr)
WO (1) WO1987005075A1 (fr)

Cited By (7)

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Publication number Priority date Publication date Assignee Title
WO1990009518A1 (fr) * 1989-02-16 1990-08-23 Robert Bosch Gmbh Circuit et procede pour commutation acceleree de consommateurs electromagnetiques
EP0821149A1 (fr) * 1996-07-23 1998-01-28 C.R.F. Società Consortile per Azioni Appareil de commande de charges inductives, en particulier pour injecteurs de systèmes à injection de moteur à combustion interne
EP0831221A3 (fr) * 1996-09-20 1998-08-05 Lucas Industries Public Limited Company Circuit d'attaque
EP0838899A3 (fr) * 1996-10-26 1998-08-19 LUCAS INDUSTRIES public limited company Circuit de commande
FR2772972A1 (fr) * 1997-12-19 1999-06-25 Renault Dispositif de commande d'un electroaimant
WO2007091170A1 (fr) * 2006-02-10 2007-08-16 Eaton Corporation Circuit d'attaque de solenoide
US11486324B2 (en) * 2018-10-19 2022-11-01 Hitachi Astemo, Ltd. Electronic control unit

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DE3734415A1 (de) * 1987-10-12 1989-04-20 Bosch Gmbh Robert Schaltungsanordnung zur beschleunigung der versorgung eines elektromagnetischen verbrauchers
DE3826087A1 (de) * 1988-08-01 1990-02-08 Hydac Technology Gmbh Schaltungsanordnung bei endstufen fuer die steuerung von stellmagneten
DE3939547C2 (de) * 1989-11-30 1999-07-01 Bosch Gmbh Robert Vorrichtung zur Kraftstoffeinspritzung in Brennkraftmaschine
DE4002286C2 (de) * 1990-01-26 1993-12-16 Prominent Dosiertechnik Gmbh Magnetantrieb, insbesondere für eine Magnetdosierpumpe
IT1255342B (it) * 1992-07-15 1995-10-31 Eniricerche Spa Elettrovalvola perfezionata a comando digitale
DE4229538C2 (de) * 1992-09-04 2002-10-24 Bosch Gmbh Robert Schaltungsanordnung zur Ansteuerung eines elektromagnetischen Verbrauchers
DE4301532A1 (de) * 1993-01-21 1994-07-28 Nat Rejectors Gmbh Schaltungsanordnung für einen Elektromagneten in einem batteriebetriebenen Münzprüfer
DE4413240A1 (de) * 1994-04-16 1995-10-19 Bosch Gmbh Robert Vorrichtung und ein Verfahren zur Ansteuerung eines elektromagnetischen Verbrauchers
DE4413546A1 (de) * 1994-04-19 1995-10-26 Walter Marks Gleichstrom-Steuerschaltung
FR2735591B1 (fr) * 1995-06-16 1997-07-11 Siemens Automotive Sa Procede et dispositif de commande auto survolteur pour un actionneur comportant une self inductance
US5907466A (en) * 1995-09-23 1999-05-25 Robert Bosch Gmbh Device and process for activating at least two electromagnetic loads
JP3616223B2 (ja) * 1996-12-27 2005-02-02 株式会社ボッシュオートモーティブシステム 電磁弁駆動装置
DE19706247B4 (de) * 1997-02-18 2005-05-19 Burgert, Markus Schaltungsanordnung zur Steuerung von Elektromagneten und Regelung des Spulenstroms
DE19726562A1 (de) * 1997-06-23 1998-12-24 Abb Research Ltd Schaltungsanordnung zur Steuerung eines bistabilen magnetischen Aktuators
DE19806619A1 (de) * 1998-02-18 1999-08-19 Lsp Innovative Automotive Sys Elektromagnetische Stelleinrichtung
DE19812742A1 (de) * 1998-03-24 1999-09-30 Bosch Gmbh Robert Verfahren und Vorrichtung zum Schalten einer Induktivität
DE19812744A1 (de) * 1998-03-24 1999-09-30 Bosch Gmbh Robert Verfahren und Vorrichtung zum Schalten eines induktiven Verbrauchers
DE59901216D1 (de) 1998-08-13 2002-05-16 Siemens Ag Einrichtung zum steuern eines stellgeräts
DE19947958C1 (de) * 1999-10-06 2001-06-21 Uni Geraete E Mangelmann Elekt Magnetventil
US6768977B1 (en) * 1999-11-30 2004-07-27 Texas Instruments Incorporated Method and circuit for modeling a voice coil actuator of a mass data storage device
DE10123519A1 (de) * 2001-05-15 2002-12-05 Bosch Gmbh Robert Verfahren und Vorrichtung zur Erhöhung des Spannungsniveaus an hochdynamischen induktiven Stellgliedern
PL349299A1 (en) * 2001-08-27 2003-03-10 Dariusz Brylinski Method of obtaining energy from a ferromagnetic material
DE10202279A1 (de) * 2002-01-22 2003-08-07 Siemens Ag Steuerschaltung für einen Aktor
US7049713B2 (en) * 2003-12-10 2006-05-23 Qualitau, Inc. Pulsed current generator circuit with charge booster
FR2866165B1 (fr) 2004-02-05 2006-04-07 Siemens Vdo Automotive Dispositif electronique de commande d'actionneurs
JP2007019293A (ja) * 2005-07-08 2007-01-25 Aisin Seiki Co Ltd リニアソレノイドの駆動装置
DE102017000901A1 (de) * 2017-02-01 2018-08-02 Rhefor Gbr (Vertretungsberechtigter Gesellschafter: Arno Mecklenburg, 10999 Berlin) Bistabiler Hubmagnet
DE102017127133A1 (de) * 2017-11-17 2019-05-23 Eaton Industries (Austria) Gmbh Hybride Schaltungsanordnung

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US3896346A (en) * 1972-11-21 1975-07-22 Electronic Camshaft Corp High speed electromagnet control circuit
FR2489885A1 (fr) * 1980-09-08 1982-03-12 Tokyo Shibaura Electric Co Circuit d'excitation pour injecteur 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

Patent Citations (3)

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Publication number Priority date Publication date Assignee Title
US3896346A (en) * 1972-11-21 1975-07-22 Electronic Camshaft Corp High speed electromagnet control circuit
FR2489885A1 (fr) * 1980-09-08 1982-03-12 Tokyo Shibaura Electric Co Circuit d'excitation pour injecteur 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

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990009518A1 (fr) * 1989-02-16 1990-08-23 Robert Bosch Gmbh Circuit et procede pour commutation acceleree de consommateurs electromagnetiques
EP0821149A1 (fr) * 1996-07-23 1998-01-28 C.R.F. Società Consortile per Azioni Appareil de commande de charges inductives, en particulier pour injecteurs de systèmes à injection de moteur à combustion interne
US5877931A (en) * 1996-07-23 1999-03-02 C.R.F. Societa' Consortile Per Azioni Device for controlling inductive loads, in particular of injectors of an internal combustion engine injection system
EP0831221A3 (fr) * 1996-09-20 1998-08-05 Lucas Industries Public Limited Company Circuit d'attaque
US5940262A (en) * 1996-09-20 1999-08-17 Lucas Industries Public Limited Company Control circuit for an electromagnetic device for controlling an electromagnetic fuel control valve
EP0838899A3 (fr) * 1996-10-26 1998-08-19 LUCAS INDUSTRIES public limited company Circuit de commande
FR2772972A1 (fr) * 1997-12-19 1999-06-25 Renault Dispositif de commande d'un electroaimant
WO2007091170A1 (fr) * 2006-02-10 2007-08-16 Eaton Corporation Circuit d'attaque de solenoide
US11486324B2 (en) * 2018-10-19 2022-11-01 Hitachi Astemo, Ltd. Electronic control unit

Also Published As

Publication number Publication date
KR880700893A (ko) 1988-04-13
JPH01501649A (ja) 1989-06-08
KR950013066B1 (ko) 1995-10-24
DE3702680A1 (de) 1987-10-29

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