EP0478436A1 - Dispositif de commande d'injecteurs de combustible dans un moteur à combustion interne - Google Patents

Dispositif de commande d'injecteurs de combustible dans un moteur à combustion interne Download PDF

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Publication number
EP0478436A1
EP0478436A1 EP91402529A EP91402529A EP0478436A1 EP 0478436 A1 EP0478436 A1 EP 0478436A1 EP 91402529 A EP91402529 A EP 91402529A EP 91402529 A EP91402529 A EP 91402529A EP 0478436 A1 EP0478436 A1 EP 0478436A1
Authority
EP
European Patent Office
Prior art keywords
coil
switch
opening
injector
duration
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP91402529A
Other languages
German (de)
English (en)
French (fr)
Inventor
Bahram Amin
Jean-Louis Raimbault
François Tonnerieux
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.)
Renault SA
Original Assignee
Renault SA
Regie Nationale des Usines Renault
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 Renault SA, Regie Nationale des Usines Renault filed Critical Renault SA
Publication of EP0478436A1 publication Critical patent/EP0478436A1/fr
Withdrawn legal-status Critical Current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
    • 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
    • F02D2041/2003—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
    • F02D2041/2024—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit the control switching a load after time-on and time-off pulses
    • F02D2041/2027—Control of the current by pulse width modulation or duty cycle 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
    • F02D2041/2031—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
    • F02D2041/2058—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 internal combustion engines in which the fuel is injected directly under high pressure into the combustion chamber of each cylinder by an injector; it relates, more particularly, to a device for controlling one or more injectors.
  • a conventional type injector comprises a hollow body comprising an inlet opening to which the inlet head of the pressurized fuel from a pump is fixed and an outlet opening to which is fixed a nozzle carrying the needle the injector which constitutes the closing and opening element of the injector.
  • the hollow body is designed to receive an electromagnet which has a static part and a movable assembly which is guided inside the static part.
  • the static part consists of a massive axisymmetric toroidal magnetic circuit and a coil to create an appropriate magnetic field.
  • the moving element consists of a pallet which cooperates with the magnetic circuit and a cylindrical sleeve guided inside the magnetic circuit, this sleeve cooperating with the needle of the injector so as to obtain the displacement of this last when the coil is traversed by a current.
  • a coil 11 of an electromagnet 10 is supplied by a battery 12, that of the vehicle, through an electronic circuit 9.
  • This electronic circuit comprises an inductor 13 and a switch 14, such as a transistor, both connected in series with one another and in parallel with the terminals of the battery 12.
  • the common point A of the inductor 13 and of the switch 14 is connected to a first terminal of the coil 11 (point D) via a switch 15, such as a thyristor, and of a diode 16.
  • the cathode of the diode 16 is connected to said terminal (point D) of the coil 11 , to a terminal of a capacitor 17, the other terminal of which is grounded, and to a current generator 19, supplied by the battery 12, by means of a diode 18, the anode of which is connected to the terminal output of the current generator 19.
  • a switch 20, such as a transistor is connected between the second terminal of the has coil 11 and ground.
  • the operation of the electronic circuit of FIG. 1 is as follows.
  • the rectangular pulses 21 and 21 ′ (figure 2-a) are the control signals of the switch 14 which close during the duration of the said pulses.
  • a current I13 (pulses 22 and 22 ′ of the figure 2-b) circulates in the inductance 13.
  • the opening of the switch 14 (side back of the pulses 21 and 21 ′) causes an overvoltage (points 23 and 23 ′ of the figure 2-c) which starts the thyristor 15.
  • the diagram of the figure 2-c represents the voltage at the common point A.
  • the energy stored in the inductor 13 is transferred to the capacitor 17 which charges at a voltage V1 (figure 2-e) during the first ignition of the thyristor 15 (pulse 24), then at a voltage V2 (figure 2 -e) during the second ignition of the thyristor 15 (pulse 24 ′).
  • V1 (figure 2-e)
  • V2 (figure 2 -e)
  • V2 (figure 2 -e) during the second ignition of the thyristor 15
  • the capacitor 17 is discharged in the coil 17 by closing the switch 20 by a pulse 25 (figure 2-f).
  • each injector must be controlled by an electronic circuit of the type of FIG. 1, which is expensive in terms of component costs.
  • An object of the present invention is therefore to provide a device for controlling several injectors in which the number of components has been minimized.
  • Another object of the present invention is also to provide a control device which has characteristics which are as identical as possible from one injector to the other, characteristics which are invariant over time, or at least which vary in an identical manner to the over time from one injector to another.
  • the first ways to charge the common capacitor to the injector coils include a step-up chopper circuit which includes a switch whose control signals are supplied by a high frequency oscillator.
  • the high frequency oscillator only works if the charging voltage of the capacitor is lower than a determined value.
  • the second means comprise a switch in series with the coil which, during the opening time of the injector, is closed only for a determined period which is defined by a circuit common to all the injectors.
  • the third means include a switch also in series with the coil which, during the opening time of the injector; is normally closed but opens intermittently when the current in the coil becomes greater than a certain value, an overshoot which is detected by a comparator.
  • the device further comprises a diode which is connected between the coil and the capacitor to discharge the charge from the coil to the common capacitor when the switch of the third means is open during the opening time of the injector.
  • the fuel injector control device for an internal combustion engine comprises two parts, one 30 common to all the injectors and the other 31 associated with each injector which, in Figure 3, is shown by a coil 32 of the electromagnet.
  • the common part 30 comprises a capacitor 33 of large capacity, for example 150 microfarads, which is connected, on the one hand, to a charging circuit, arranged on the left part of the diagram with respect to the vertical line 34 and to a circuit discharge disposed to the right of said vertical line 34, this discharge circuit being essentially constituted by the coil 32 of each of the injectors of the engine.
  • the charging circuit of the capacitor 33 includes a battery 35, that of the vehicle with an internal combustion engine, supplying a voltage V B.
  • the positive terminal of this battery is connected to a terminal E of the capacitor 33, the other of which is grounded, via an inductor 36 and a diode 37, the cathode of which is connected to the terminal E of the capacitor. 33.
  • a switch 38 is connected between earth and the common point of the inductor 36 and the diode 37. The opening and closing of the switch 38 are controlled by a circuit 39 of so that the charging voltage V E of the capacitor 33 measured at point E is constant, for example equal to 60 volts.
  • a link 51 between point E and circuit 39 indicates the measurement of the voltage at point E while link 53 indicates the control of switch 38.
  • a zener diode 47 is connected between point E and a terminal G of the coil 32 by means of a diode 46 which is associated with each injector, these two diodes constituting a so-called energy recovery circuit. .
  • the anode of diode 47 is connected to point E.
  • the part common to the injectors further comprises a computer 40 which supplies the signals defining the instants and durations of injection of the fuel into the different injectors and a circuit 41 for determining the duration of the current peak required for opening of each injector.
  • the part 31 associated with each injector comprises a switching device 55 which comprises a switch 421, a circuit 56 for discharging the capacitor 33 in the coil 32 which comprises a switch 45, a control circuit 48 of the switch 421, a circuit for controlling the switch 45 and a circuit 57, comprising the diode 46 which, in association with the zener diode 47, for energy, constitutes the recovery circuit indicated above.
  • the switch 421 is connected between point E and a first terminal F of the coil 32, the second terminal G of the latter being connected to ground via the switch 45.
  • a diode 43 is connected between the switch 421 and the first terminal F of the coil 32 so that its cathode is connected to it.
  • the first terminal or point F is also connected to the positive terminal of the battery 35 by a diode 44 whose cathode is connected to the point F.
  • the second terminal G of the coil 32 is connected to the point E of the common part 30 by the diode 46 and the zener diode 41.
  • the anode of the diode 46 is connected to the terminal G of the coil 32 while the anode of the zener diode 47 is connected to the point E and is part of the common part 30 to the injectors .
  • the opening and closing of the switches 421 and 45 are controlled respectively by signals supplied by circuits 48 and 49 under the control of the computer 40 of the common part.
  • the circuit 48 provides a signal for the duration of opening of the switch 421 while the circuit 49 provides switching signals for the switch 45 so that the current in the coil remains constant, for example three amps. For this reason, a connection 50 has been shown between the coil 32 and the circuit 49 to indicate a current measurement.
  • the operation of the device of Figure 3 is as follows.
  • the capacitor 33 is charged at a voltage V E by successive elementary charges obtained by the switching of the switch 38 under the control of the circuit 39 which also receives the information of the value of the voltage V E by the link 51.
  • the diode 37 is on when the switch 38 is open and allows charging of the capacitor 33 and is blocked when it is closed, which prevents the discharge of the capacitor 33.
  • the computer 40 supplies three trains of pulses (figures 5-a, 5-b and 5-c) of duration ⁇ 2 at the frequency of rotation of the motor, for example at 100 hertz for 6,000 rpm, but offset by 120 ° relative to each other.
  • the three trains are applied to circuit 41 which provides, for each train, pulses of determined and constant duration, that of the closing of switches 421, 422 and 423.
  • These pulses of determined duration ⁇ 1, for example 250 microseconds, are applied to the switch 421 via the circuit 48.
  • the three pulse trains supplied by the computer 40 are also each applied to a circuit 49 which controls the switch 45 of each injector.
  • the switches 421 and 45 close so that the capacitor 33 discharges into the coil 32 in the form of a current of high value which reaches for example nine amperes.
  • the switch 421 opens so that the coil is supplied by the battery 35 through the pass-through diode 44 and the current in the coil is reduced to approximately three amps. It is maintained at this value for the rest of the time interval ⁇ 2 by the switching of the switch 45 via the circuit 49.
  • the switch 45 opens definitively at the end of the time interval ⁇ 2 .
  • the switch 45 opens and closes. During the opening times, the current flows in the coil 32, via the diode 46 and the zener diode 47, and charges the capacitor 33, which constitutes a recovery of the energy stored in the coil 32
  • the elements identical to those of the diagram of FIG. 3 bear the same references with the exception of the switches which have been represented by transistors of the field effect type produced in metal-oxide technology, better known by the English abbreviation MOSFET transistors. This is how the switch 38 is produced by a transistor 60, the switch 421 by a transistor 62, the switch 45 by a transistor 67.
  • the charging circuit of the capacitor 33 comprises, in addition to the elements already described in relation to FIG. 3, the following elements.
  • the transistor 60 has its drain which is connected to the positive terminal of the battery via the inductor 36, its source which is connected to ground and its gate which is connected to the output of a clock circuit 85.
  • Terminal E of capacitor 33 is connected to an input of a comparator circuit 84 via a resistive bridge comprising resistors 81 and 82.
  • the other input of the comparator circuit is connected, on the one hand, to its output by a feedback resistance 83 and at the output of a supply circuit 80 which supplies a constant voltage V C and regulated from the battery voltage V B.
  • the output terminal of the comparator circuit 84 is connected to the input of the clock circuit 85.
  • the comparator circuit 84 is designed to provide a logic level on its output terminal, for example level 0 , which stops the clock circuit 85 when the charging voltage V E of the capacitor 33 is greater than a certain value, for example 60 volts . As a result, the transistor 60 remains blocked and the transistor 33 does not charge. On the other hand, when the voltage V E is less than 60 volts, the comparator circuit 84 provides a logic level 1 which activates the clock circuit 85 so that transistor 60 opens and closes at the rate of the pulses supplied by the clock circuit. As a result, the capacitor 33 charges by increment of charge until reaching the voltage of 60 volts.
  • a MOSFET transistor 62 the drain of which is connected to point E, its source being connected to the drain of a MOSFET transistor 66 by a resistor 87 and its control gate being connected to the drain of a MOSFET transistor 65 by means of a resistor 64.
  • the source of the transistor 62 is connected to the coil 32 (point F) by means of the diode 43 already indicated in relation to FIG. 3.
  • the transistors 65 and 66 are supplied by the battery voltage V B via a diode 61, the anode of which is connected to the positive terminal of the battery and of the resistors 63 and 64 for the transistor 65 and by the intermediate said diode 61 and a capacitor 88 for transistor 86.
  • a zener diode 89 is connected between the gate and the source of transistor 62, its cathode being connected to the gate.
  • the sources of the transistors 65 and 66 are connected to ground while their control gates are connected to the output terminal of an AND logic circuit 71 which supplies the signal for unlocking the transistor 62 of determined duration ⁇ 1 via d 'an inverter circuit 95.
  • the electronic assembly comprising transistors 65 and 66 produces a circuit known under the name of "bootstrap" circuit.
  • the current for maintaining the opening of an injector is obtained by supplying the coil 32 by the battery 35 through a diode 44 whose anode is connected to the positive terminal of said battery.
  • This holding current is regulated to a certain value by circuits 49 and 56 which include the following elements.
  • MOSFET transistor 67 whose drain is connected to the battery via the coil 32 and the diode 44, the source being connected to ground by a resistor 90 and its control gate being connected to the terminal output of an OR logic circuit 74.
  • the source of transistor 67 is also connected to a first input terminal of a comparator circuit 96.
  • the second input terminal of comparator circuit 96 is connected to the common point of a resistive divider bridge consisting of resistors 69 and 70 supplied by the voltage V C.
  • This resistive bridge provides a reference voltage for the comparator circuit 96 which also receives the voltage across the resistor 90, a voltage which is proportional to the current flowing in the coil 32.
  • the output terminal of the comparator circuit 96 is connected, d on the one hand, to the first input terminal by a feedback resistor 68 and, on the other hand, to a first input terminal of an AND logic circuit 75 the second input terminal of which is connected by a conductor 91 ′ to a terminal 91 constituted by the emitter of a transistor 76.
  • the output terminal of the AND circuit 75 is connected to a first input terminal of the OR circuit 74 whose second input terminal is connected to the output terminal of the ET 71 circuit.
  • the comparator circuit 96 supplies a logic signal 1 when the current in the coil 32 is less than a determined value, for example three amps, and a logic signal 0 when said current is greater than this same determined value. Via logic circuits 75 and 74, logic signal 1 causes transistor 67 to close while logic signal 0 causes it to open.
  • the opening signal is supplied by the computer 40 via an opto-electronic circuit which performs the galvanic isolation.
  • This opto-electronic circuit comprises, on the computer side 40, a transmitting diode 78 in series with a resistor 79.
  • each injector On the side of each injector, it comprises a transistor 76 receiving the radiation (arrow 86) whose collector is connected to the voltage V C and whose emitter (terminal 91) is connected, on the one hand, to ground by a resistor 77 and, on the other hand, to various circuits, namely circuit 41 for determining the duration ⁇ 1 of the peak current in the injector, a first input terminal of the AND circuit 71 and the second input terminal of the AND circuit 75 (conductor 91 ′). The second terminal of the AND circuit 71 is connected to the output terminal of the circuit 41 by a conductor 94.
  • control signal appears on terminal 92 and is applied to circuit 41, to the first input terminal of an AND circuit 72 and to the second input terminal of an AND circuit equivalent to the circuit ET 74 via a 92 ′ conductor.
  • control signal appears on terminal 93 and is applied to circuit 41, to the first input terminal of an AND circuit 73 and to the second input terminal of an AND circuit equivalent to the circuit AND 74 via a conductor 93 '.
  • the output conductor 94 of circuit 41 is also connected to the second input terminal of the circuits ET 72 and 73.
  • the diagrams of figures 5-a, 5-b and 5-c show the logical states or signals which appear respectively on the terminals 91,92 and 93; on each diagram, the pulses have a duration ⁇ 2 which varies from 0.2 milliseconds to three milliseconds, that of the duration of opening of an injector, and have a period of approximately ten milliseconds.
  • the diagram of FIG. 5-d represents the pulses supplied by the circuit 41 on the conductor 94.
  • the diagram of FIG. 5-e represents the shape of the current in the coil 32 of the diagram of FIG. 4.
  • the energy recovery circuit comprises diode 46 and at least one zener diode 47.
  • the anode of diode 46 is connected to point G and its cathode is connected to the cathode of the diode zener 47, the anode of which is connected to point E.
  • the operation of the device in FIG. 4 will now be explained with the help of the diagrams in FIG. 5.
  • the circuit AND 71 opens and lets pass the pulse 101 supplied by the circuit 41 on the conductor 94.
  • the pulse 101 is applied directly to the OR circuit 74 and to the control gates of the transistors 65 and 66 by the inverter 95. It blocks the transistors 65 and 66 by applying the potential of the ground to the control gates.
  • the control gate of transistor 62 which was at a potential close to ground (conduction of transistor 65) comes to potential V B relative to its source thanks to the charge of capacitor 88.
  • the capacitor 33 discharges into the coil 32 and a current flows there to flow to ground via the transistor 67 which is closed by the pulse 101 supplied by the AND circuit 71 via the OR circuit 74
  • the diode 44 prevents the return of current to the battery.
  • the transistor 62 As a result of the conduction of the transistor 62, the latter is at the potential V E and this is the case with the control gate, the voltage of which blocks the diode 61, which protects the battery 35. Furthermore, the capacitor 88 discharges and a supply current from the gate flows through the resistor 63 and the gate-source junction of the transistor 62.
  • the purpose of the zener diode 89 is to protect the gate-source junction when the voltage applied to said junction exceeds the conduction threshold of said zener diode 89.
  • the transistor 67 On the trailing edge of the pulse 101, the transistor 67 is blocked and the transistors 65 and 66 become conductive. A potential close to ground is applied to the control gate of the transistor 62 which is blocked so that the coil 32 is no longer connected to the capacitor 33.
  • the transistor 67 being blocked, the current in the coil 32 decreases. As soon as the current is below the threshold of three amps, the comparator 96 provides an opening signal of the AND circuit 75 which also receives the opening signal 100 (figure 5-a).
  • the transistor 67 becomes conductive and the coil 32 is supplied by the battery 35 through the conductive diode 44.
  • the current increases in the coil 32 and exceeds the threshold of three amps which triggers the comparator 96.
  • the AND circuit 75 closes and transistor 67 is blocked.
  • a current regulation is thus obtained in the coil at a value of three amps.
  • the operation of the energy recovery circuit is as follows.
  • the transistor 67 When the transistor 67 is blocked, the energy stored in the coil 32 flows to the capacitor 33 via the diode 46 and the zener diode 47 provided that the voltage across the terminals of the coil is greater than the voltage V E increased by the reverse conduction voltage of the zener diode 47.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Fuel-Injection Apparatus (AREA)
EP91402529A 1990-09-28 1991-09-24 Dispositif de commande d'injecteurs de combustible dans un moteur à combustion interne Withdrawn EP0478436A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9011972 1990-09-28
FR9011972A FR2667357A1 (fr) 1990-09-28 1990-09-28 Dispositif de commande d'injecteurs de combustible dans un moteur a combustion interne.

Publications (1)

Publication Number Publication Date
EP0478436A1 true EP0478436A1 (fr) 1992-04-01

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ID=9400741

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91402529A Withdrawn EP0478436A1 (fr) 1990-09-28 1991-09-24 Dispositif de commande d'injecteurs de combustible dans un moteur à combustion interne

Country Status (2)

Country Link
EP (1) EP0478436A1 (enrdf_load_stackoverflow)
FR (1) FR2667357A1 (enrdf_load_stackoverflow)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0622536A3 (en) * 1993-04-30 1995-11-22 Chrysler Corp Driver circuit for an electronic fuel injector.
WO1998045932A1 (de) * 1997-04-10 1998-10-15 Asm Automation Sensorik Messtechnik Gmbh Impulsgenerator mit hohem wirkungsgrad zur erzeugung von kurzen spannungsimpulsen
EP1008740A1 (en) * 1998-12-09 2000-06-14 MAGNETI MARELLI S.p.A. A circuit device for driving inductive loads
FR2795771A1 (fr) * 1999-05-15 2001-01-05 Bosch Gmbh Robert Procede et circuit de commande d'un injecteur electromagnetique a haute pression a double bobine pour l'injection de carburant
CN106130521A (zh) * 2016-07-01 2016-11-16 上海小为科技股份有限公司 一种单火取电智能电子墙壁开关取电电路实现方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2559211A1 (fr) * 1984-01-31 1985-08-09 Lucas Ind Plc Circuit d'excitation destine a la commande du courant circulant dans le solenoide d'un dispositif electromagnetique en reponse a un signal de commande
FR2569239A1 (fr) * 1984-03-05 1986-02-21 Mesenich Gerhard Procede pour commander une soupape d'injection electromagnetique
EP0323318A1 (fr) * 1987-12-28 1989-07-05 Automobiles Peugeot Dispositif de commande et de contrôle d'injecteurs de combustible d'un moteur à combustion interne multicylindre notamment à deux temps

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58184820A (ja) * 1982-04-23 1983-10-28 Oki Electric Ind Co Ltd 非同期型ブ−トストラツプバツフア回路装置
US4636620A (en) * 1985-09-13 1987-01-13 Allied Corporation Temperature compensation injector control system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2559211A1 (fr) * 1984-01-31 1985-08-09 Lucas Ind Plc Circuit d'excitation destine a la commande du courant circulant dans le solenoide d'un dispositif electromagnetique en reponse a un signal de commande
FR2569239A1 (fr) * 1984-03-05 1986-02-21 Mesenich Gerhard Procede pour commander une soupape d'injection electromagnetique
EP0323318A1 (fr) * 1987-12-28 1989-07-05 Automobiles Peugeot Dispositif de commande et de contrôle d'injecteurs de combustible d'un moteur à combustion interne multicylindre notamment à deux temps

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABTRACTS OF JAPAN, vol. 8, no. 21 (E-224)[1458], 28 janvier 1984; & JP-A-58 184 820 (OKI DENKI) 28-10-1983 *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0622536A3 (en) * 1993-04-30 1995-11-22 Chrysler Corp Driver circuit for an electronic fuel injector.
WO1998045932A1 (de) * 1997-04-10 1998-10-15 Asm Automation Sensorik Messtechnik Gmbh Impulsgenerator mit hohem wirkungsgrad zur erzeugung von kurzen spannungsimpulsen
US6680603B1 (en) 1997-04-10 2004-01-20 Asm Automation Sensorik Messtechnik Gmbh High-efficiency method and pulse generator for generating short voltage pulses
EP1008740A1 (en) * 1998-12-09 2000-06-14 MAGNETI MARELLI S.p.A. A circuit device for driving inductive loads
FR2795771A1 (fr) * 1999-05-15 2001-01-05 Bosch Gmbh Robert Procede et circuit de commande d'un injecteur electromagnetique a haute pression a double bobine pour l'injection de carburant
CN106130521A (zh) * 2016-07-01 2016-11-16 上海小为科技股份有限公司 一种单火取电智能电子墙壁开关取电电路实现方法

Also Published As

Publication number Publication date
FR2667357A1 (fr) 1992-04-03
FR2667357B1 (enrdf_load_stackoverflow) 1994-12-16

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