EP0995023B1 - Circuit de commande de puissance pour actionneur electromagnetique tel qu'injecteur ou electrovanne - Google Patents
Circuit de commande de puissance pour actionneur electromagnetique tel qu'injecteur ou electrovanne Download PDFInfo
- Publication number
- EP0995023B1 EP0995023B1 EP98936459A EP98936459A EP0995023B1 EP 0995023 B1 EP0995023 B1 EP 0995023B1 EP 98936459 A EP98936459 A EP 98936459A EP 98936459 A EP98936459 A EP 98936459A EP 0995023 B1 EP0995023 B1 EP 0995023B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- coil
- switching means
- capacitor
- actuating
- closure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000003990 capacitor Substances 0.000 claims abstract description 43
- 239000000446 fuel Substances 0.000 claims abstract description 11
- 238000002485 combustion reaction Methods 0.000 claims abstract description 9
- 238000004146 energy storage Methods 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims 5
- 238000002347 injection Methods 0.000 abstract description 12
- 239000007924 injection Substances 0.000 abstract description 12
- 230000006698 induction Effects 0.000 description 24
- 238000011084 recovery Methods 0.000 description 7
- 238000009825 accumulation Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 230000001939 inductive effect Effects 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 125000004122 cyclic group Chemical group 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000006677 Appel reaction Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000012163 sequencing technique Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/20—Output circuits, e.g. for controlling currents in command coils
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- 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
-
- 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
- F02D2041/201—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 inductance
-
- 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
- F02D41/30—Controlling fuel injection
- F02D41/38—Controlling fuel injection of the high pressure type
- F02D2041/389—Controlling fuel injection of the high pressure type for injecting directly into the cylinder
-
- 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 circuit for controlling power, for the power supply of a actuating coil of at least one electromagnetic actuator, such as a solenoid valve or a fuel, in particular for internal combustion engine direct injection.
- injectors have a very short response time to both opening and closing, so that the durations of the fuel injection phases by the injectors correspond as precisely as possible to the durations calculated by an electronic control unit and calculation, commonly called engine control computer, which notably controls the injection of fuel, and, if necessary ignition, if necessary, from operating parameters engine speed, such as engine speed, pressure of air to the intake manifold, temperature of the engine cooling, oxygen content in gases which are detected by appropriate detectors.
- engine control computer which notably controls the injection of fuel, and, if necessary ignition, if necessary, from operating parameters engine speed, such as engine speed, pressure of air to the intake manifold, temperature of the engine cooling, oxygen content in gases which are detected by appropriate detectors.
- electromagnetic injectors are open by the power supply electric from their actuating coil so as to develop a sufficiently intense electromagnetic force on a movable member of the injector, called needle, to spread it, against return springs, against a seat which it is kept applied with sealing by said springs in the closed position.
- FR-A-2 538 942 EP-A-0 548 915 and FR-A-2 735 591 of power control circuits, for power supply electric of an actuating coil of at least one electromagnetic actuator, such as a fuel
- circuits including an accumulation stage or booster, connected to a power source direct current at low voltage, such as motor vehicle battery, and comprising a capacitor of energy accumulation, a self induction coil for the accumulation of energy, and of the first means switches, cyclically controlled at closing and at opening by a switching control unit, for ensure in succession at least two consistent sequences each to charge the self induction coil from said power source and then charging the capacitor from the self induction coil and through a diode, and second switching means, controlled by the closing by said control unit to ensure supply of said actuating coil by discharge of said capacitor, to also obtain the establishment fast of a high inrush current.
- the actuating coil of the electromagnetic actuator directly as a coil self induction for energy accumulation in the floor booster, to simplify the implementation and reduce the cost of such power control circuits.
- the problem underlying the invention is to perfect these power control circuits known from so that their energy storage stage can store then discharge more energy than known circuits to be able to actuate electromagnetic actuators requiring great control power, such as electro-magnetic injectors for direct injection of fuel in the combustion chambers of diesel engines or spark ignition engines, in which the injectors are supplied with high pressure fuel and are returned to the closed position by springs of powerful recall, without the control circuits of power of the invention to be much more complex nor much more expensive than known circuits.
- the power control circuit of the invention is characterized in that said self induction coil is separate from said actuation coil, and in that after charging the capacitor and before supplying said coil actuation, said switching control unit controls the closing of said first switching means to charge said self induction coil, so that the closure of said second switching means, said actuating coil is powered by simultaneous discharge of said capacitor and of said self induction coil.
- the circuit of power control of the invention is no more complex neither significantly more expensive, and essentially requires a modification of the control mode of the switching means which is provided by the switching control unit.
- This modification of the command mode is reduced to a modification control software when, advantageously, the switching means include electronic switches, in particular transistorized, controlled by a command logic delivered by the switching control unit, which includes at least one microprocessor or microcontroller.
- the circuit of the invention advantageously comprises in addition to the third switching means, interposed between the power source and the self induction coil, and orders; by the closing control unit for ensure the initial charges of the capacitor and the self induction coil, then after closing the second switching means, cyclically controlled at opening and closing to ensure in the coil actuation, a lower intensity holding current to that of the inrush current resulting from the discharge of the capacitor and the self induction coil.
- the self induction coil and the capacitor are used, as a first step, as reservoir, of energy, restored in a second time to provide high inrush current with rise time very fast, but the self induction coil and the capacitor can, in combination with the third means switches, used for the maintenance of a holding current, thanks to a DC converter structure in direct current which has the advantage of being of low radiation electro-magnetic, because it can work almost resonance, so that the power circuit of the invention can meet electromagnetic emission standards more stringent which will soon be in force, especially for on-board equipment on vehicles automobiles, such as solenoid valves and injectors, especially for direct fuel injection installation.
- third switching means it is possible after the closing of the second switch means controlling the simultaneous discharge of the capacitor and the inductor induction in the actuating coil, and before the holding current delivery, cyclic control the third switching means at the opening and at the closing by the switching control unit, so maintain the inrush current at an intensity close to that resulting from the simultaneous discharge of the capacitor and from the self induction coil to the actuation coil.
- This maintenance phase of the inrush current at a level high can thus take place between the initial phase quick establishment of inrush current and phase setting the holding current at a lower level intensity.
- the third switching means are advantageously controlled by the control unit with a variable opening duty cycle to ensure holding current and / or maintaining the inrush current.
- the second switching means are controlled at opening by the control unit, preferably when the actuating coil is traversed by the holding current, so as to quickly cancel the current in this coil, to obtain a brief cut of the current, necessary to obtain good accuracy of actuator operation.
- the circuit of the invention is also advantageous by the fact that the booster stage can supply in parallel the actuating coils of at least two actuators electromagnetic, and in particular the coils of all the injectors of an internal combustion engine.
- the second and third switching means can be ordered at closing to obtain a recovery of at least two feed times actuating coils, which allows recoveries to be managed injection duration, with a single power circuit, in the case of applications to injection engines.
- the third means switches and the self induction coil form a converter which advantageously ensures an increase holding current during these recoveries.
- the power control circuit of Figure 1 includes a self induction coil 1 connected by a end in series with a switch 2 connected to the terminal "+" from a DC power source 3 at low voltage Vbat, which is the battery of a motor vehicle, whose terminal "-" is earthed.
- coil 1 is connected in parallel to another switch 4, connected to ground, and via a diode 5, on the one hand to a terminal of a capacitor 6, whose other terminal is connected to ground, and, on the other hand, with four actuator actuator coils 7, 8, 9 and 10, which are connected in parallel with each other, and each of which is connected to ground via one respectively of four power switches 11, 12, 13 and 14, the overvoltage at the terminals of each coil of injector 7 to 10 being limited, for example to around 80V, by a Zenner diode 15 in parallel on the switch 11, 12, 13 or 14 corresponding.
- a capacitor 17, with a value of about 0.5 ⁇ F at about 5 ⁇ F, and a reverse diode 18 are each mounted in parallel on switch 2, and diode 18 can be the diode integrated in a MOS type switching transistor channel P constituting the switch 2.
- a diode reverse 19 is connected in parallel on switch 4, and this diode can be the integrated diode of a transistor N-type MOS switching device constituting the switch 4.
- All switches 2, 4, 11, 12, 13 and 14 are solid state electronic switches controlled by opening and closing by control signals low and high level logic delivered by a unit of switching logic control 16 with microprocessors or microcontrollers, and which is connected to each of the switches ordered through a command line.
- Coil 1 for example having a coefficient self-induction from about 10 ⁇ H to about 50 ⁇ H, is a energy storage coil.
- the capacitor 6, by example with a capacity between 1 and 10 ⁇ F, is a capacitor of a technology other than chemical, of preferably for storing capacitive energy and for ensure energy transfer from the self induction coil 1 to at least one injector coil 7 to 10.
- Switch 4 is cyclically controlled at the closing and opening by unit 16 to ensure, when switch 2 is closed, the coil load 1, for a time varying from approximately 20 ⁇ s to approximately 100 ⁇ s, when switch 4 is closed, then to ensure the charging of the capacitor 6 through the diode 5, by transfer of inductive energy from coil 1, when switch 4 is open.
- Switch 2 is also ordered to close by unit 16 during a time from about 10 ⁇ s to about 70 ⁇ s, to ensure the load of coil 1, then in a later phase explained below, switch 2 is controlled so cyclic at closing and opening by unit 16 for maintain the current at a determined value, about 3 to 5 A, in at least one of the injector coils 7 to 10 supplied by closing the switch 11 to 14 correspondent. Indeed, each of the switches 11 to 14 is intended to ensure the conduction of the coil of injector 7 to 10 corresponding.
- Diode 5 is for function of avoiding the discharge of the capacitor 6 by the switches 2 and 4 when closed.
- the circuit operation sequencing, controlled by unit 16 is as follows: closing switches 2 and 4 causes the load of the coil 1, traversed by a current iL which increases linearly from 0 to about 15 A for a time of about 20 ⁇ s to about 100 ⁇ s.
- the opening switch 4 causes the capacitor 6 to charge by energy transfer from coil 1 to the capacitor 6, through diode 5.
- the voltage across the capacitor 6 grows along an exponential curve, at the same time that a current peak occurs.
- This sequence comprising a charge of coil 1 followed by a charge of capacitor 6 is renewed a certain number of times up to charge capacitor 6 at a voltage of 80 V about.
- one of the injector switches by example switch 11 is closed, while switch 2 remains closed and switch 4 is open (see Figures 3 and 4), so that a simultaneous discharge of coil 1 and capacitor 6 into the coil injector 7, traversed by an intense inrush current, which reaches 15 to 20 A after a time of 30 to 50 ⁇ s, and corresponds to the sum of the currents resulting from the discharge capacitive of capacitor 6 and the inductive discharge of coil 1.
- an intense inrush current which reaches 15 to 20 A after a time of 30 to 50 ⁇ s, and corresponds to the sum of the currents resulting from the discharge capacitive of capacitor 6 and the inductive discharge of coil 1.
- the control unit 16 cyclically controls the switch 2 with a variable aperture duty cycle, which is then lowered to decrease the current to an intensity of 3 to 5 A approximately, then keep it around this value to ensure a holding current of the injector in its coil 7.
- the booster stage comprising the coil 1, the diode 5, the switch 4 and the capacitor 6, supplies parallel the injector coils 7 to 10.
- Switch 2 and the two switches for example 11 and 12 of the two injector coils 7 and 8 to be supplied with recovery are controlled upon opening by the control unit 16 of so as to ensure this recovery of feeding times.
- Curves (a) and (b) in Figure 6 show the currents i1 and i2 in the injector coils 7 and 8 after the two time-shifted switch 4 closures - see curve (d) - to load coil 1 just before shifted closings of switches 11 and 12, which are at the origin of currents i1 and 12.
- the charges of coil 1 resulting from the closings of switch 4 are visible on the curve (c) of figure 6, representing the current iL in this coil 1.
- the switch 2 command with a variable duty cycle after the openings of the switch 4 allows maintaining the inrush current then obtaining the inrush current maintenance.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Power Engineering (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)
Abstract
Description
- la figure 1 est un schéma synoptique du circuit de l'invention pour l'alimentation en parallèle des bobines d'actionnement de quatre injecteurs d'un moteur à combustion interne de véhicule à injection directe,
- la figure 2 est un chronogramme représentant les évolutions de la tension Vout à la borne commune du condensateur et de la diode de charge et du courant iL de la bobine de self induction en fonction de la commande logique des premiers moyens commutateurs pendant la phase de charges successives du condensateur,
- la figure 3 est un chronogramme représentant schématiquement l'évolution du courant i dans une bobine d'injecteur et la commande logique des seconds et troisièmes moyens commutateurs pour l'entretien du courant d'appel puis l'obtention du courant de maintien, jusqu'à la coupure du courant dans cette bobine,
- la figure 4 représente des chronogrammes montrant en superposition l'évolution respectivement du courant i dans une bobine d'injecteur et de la tension V aux bornes de cette bobine, en fonction de la commande logique des premiers moyens commutateurs pendant la phase de décharge,
- la figure 5 représente l'évolution du courant iL dans la bobine de self induction pendant la décharge, et
- la figure 6 représente des chronogrammes montrant l'évolution des courants i1 et i2 dans le cas du recouvrement des alimentations de deux bobines d'injecteur, ainsi que le courant iL dans la bobine de self induction en fonction des commandes logiques des premiers et troisièmes moyens commutateurs en phase de recouvrement.
Claims (8)
- Circuit de commande de puissance, pour l'alimentation en courant électrique d'une bobine d'actionnement (7-10) d'au moins un actionneur électro-magnétique, tel qu'un injecteur de carburant pour moteur à combustion interne, le circuit comprenant un étage survolteur connecté à une source (3) d'alimentation en courant continu à basse tension, telle qu'une batterie de véhicule, et comportant un condensateur (6) d'accumulation d'énergie, une bobine de self induction (1) pour l'accumulation d'énergie, et des premiers moyens commutateurs (4) commandés cycliquement à la fermeture et à l'ouverture par une unité de commande de commutation (16), pour assurer en succession au moins deux séquences consistant chacune à charger la bobine de self induction (1) à partir de ladite source d'alimentation (3), puis à charger le condensateur (6) à partir de la bobine de self induction (1) et au travers d'une diode (5), et des seconds moyens commutateurs (11-14), commandés à la fermeture par ladite unité de commande (16) pour assurer l'alimentation de ladite bobine d'actionnement (7-10) par décharge dudit condensateur (6), caractérisé en ce que ladite bobine de self induction (1) est distincte de ladite bobine d'actionnement (7-10), et en ce qu'après la charge du condensateur (6) et avant l'alimentation de ladite bobine d'actionnement (7-10), ladite unité de commande de commutation (16) commande la fermeture desdits premiers moyens commutateurs (4) pour charger ladite bobine de self induction (1), de sorte qu'à la fermeture desdits deuxièmes moyens commutateurs (11-14), ladite bobine d'actionnement (7-10) est alimentée par la décharge simultanée dudit condensateur (6) et de ladite bobine de self induction (1).
- Circuit de commande de puissance selon la revendication 1, caractérisé en ce qu'il comprend de plus des troisièmes moyens commutateurs (2) interposés entre ladite source d'alimentation (3) et ladite bobine de self induction (1), et commandés par ladite unité de commande (16) à la fermeture pour assurer les charges initiales dudit condensateur (6) et de ladite bobine de self induction (1), puis, après la fermeture desdits deuxièmes moyens commutateurs (11-14), commandés cycliquement à l'ouverture et à la fermeture pour assurer dans ladite bobine d'actionnement (7-10), un courant de maintien d'intensité inférieure à celle du courant d'appel résultant de la décharge simultanée dudit condensateur (6) et de ladite bobine de self induction (1).
- Circuit de commande de puissance selon la revendication 2, caractérisé en ce qu'après la fermeture desdits deuxièmes moyens commutateurs (11-14) commandant la décharge simultanée du condensateur (6) et de la bobine de self induction (1) dans la bobine d'actionnement (7-10), et avant la délivrance dudit courant de maintien, lesdits troisièmes moyens commutateurs (2) sont commandés cycliquement à l'ouverture et à la fermeture par ladite unité de commande (16) de sorte à entretenir le courant d'appel à une intensité voisine de celle résultant de la décharge simultanée du condensateur (6) et de la bobine de self induction (1) dans la bobine d'actionnement (7-10).
- Circuit de commande de puissance selon l'une des revendications 2 et 3, caractérisé en ce que les troisièmes moyens commutateurs (2) sont commandés par ladite unité de commande (16) avec un rapport cyclique d'ouverture variable pour assurer ledit courant de maintien et/ou entretenir ledit courant d'appel.
- Circuit de commande de puissance selon l'une quelconque des revendications 1 à 4, caractérisé en ce que les deuxièmes moyens commutateurs (11-14) sont commandés à l'ouverture par ladite unité de commande (16) de sorte à annuler rapidement le courant d'alimentation de la bobine d'actionnement (7-10).
- Circuit de commande de puissance selon l'une quelconque des revendications 1 à 5, caractérisé en ce que les moyens commutateurs (2, 4, 11-14) comprennent des commutateurs électroniques pilotés par une commande logique délivrée par ladite unité de commande de commutation (16), qui comprend au moins un microprocesseur ou microcontrôleur.
- Circuit de commande de puissance selon l'une quelconque des revendications 2 à 6, caractérisé en ce que l'étage survolteur (1, 4, 5, 6) alimente en parallèle les bobines d'actionnement (7-10) d'au moins deux actionneurs électromagnétiques et lesdits deuxièmes (11-14) et troisièmes (2) moyens commutateurs sont commandés à la fermeture de façon à obtenir un recouvrement des durées d'alimentation d'au moins deux bobines d'actionnement (7-10).
- Circuit de commande de puissance selon la revendication 7, caractérisé en ce que les troisièmes moyens commutateurs (2) et la bobine de self induction (1) forment un convertisseur assurant une augmentation du courant de maintien pendant un recouvrement de durées d'alimentation d'au moins deux bobines d'actionnement (7-10).
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9708726A FR2766005B1 (fr) | 1997-07-09 | 1997-07-09 | Circuit de commande de puissance, pour actionneur electro-magnetique tel qu'injecteur ou electro-vanne |
FR9708726 | 1997-07-09 | ||
PCT/FR1998/001452 WO1999002834A1 (fr) | 1997-07-09 | 1998-07-07 | Circuit de commande de puissance, pour actionneur electromagnetique tel qu'injecteur ou electrovanne |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0995023A1 EP0995023A1 (fr) | 2000-04-26 |
EP0995023B1 true EP0995023B1 (fr) | 2002-04-10 |
Family
ID=9509055
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98936459A Expired - Lifetime EP0995023B1 (fr) | 1997-07-09 | 1998-07-07 | Circuit de commande de puissance pour actionneur electromagnetique tel qu'injecteur ou electrovanne |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0995023B1 (fr) |
DE (1) | DE69804801T2 (fr) |
FR (1) | FR2766005B1 (fr) |
WO (1) | WO1999002834A1 (fr) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5979412A (en) * | 1997-08-12 | 1999-11-09 | Walbro Corporation | Inductive discharge injector driver |
DE19911863A1 (de) * | 1999-03-17 | 2000-09-21 | Philips Corp Intellectual Pty | Schaltungsanordnung zum Steuern eines Aktuators |
DE19922485B4 (de) * | 1999-05-15 | 2008-06-12 | Robert Bosch Gmbh | Verfahren und Schaltungsanordnung zur Ansteuerung eines Doppelspulen-Hochdruckeinspritzmagnetventils für die Kraftstoffeinspritzung |
GB0107555D0 (en) * | 2001-03-27 | 2001-05-16 | Bae Systems Plc | Electromagnetic actuation |
FR2826200B1 (fr) | 2001-06-15 | 2004-09-17 | Sagem | Procede d'alimentation d'un equipement electrique |
DE10257840A1 (de) * | 2002-12-11 | 2004-07-15 | Robert Bosch Gmbh | Vorrichtung zur Steuerung eines Verbrauchers |
DE602004004664T2 (de) * | 2004-10-08 | 2007-11-08 | C.R.F. S.C.P.A. | Vorrichtung zum Steuern der Elektroeinspritzventile und Elektroventile einer Brennkraftmaschine und eine Methode dafür |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT1218673B (it) * | 1987-08-25 | 1990-04-19 | Marelli Autronica | Circuito per il controllo di carichi induttivi in particolare per il comando degli elettroiniettori di un motore a ciclo diesel |
IT1217171B (it) * | 1987-08-25 | 1990-03-14 | Marelli Autronica | Circuito per il pilotaggio di carichi induttivi in particolare per il comando degli elettroiniettori di un motore a combustione interna a ciclo diesel |
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1997
- 1997-07-09 FR FR9708726A patent/FR2766005B1/fr not_active Expired - Fee Related
-
1998
- 1998-07-07 WO PCT/FR1998/001452 patent/WO1999002834A1/fr active IP Right Grant
- 1998-07-07 EP EP98936459A patent/EP0995023B1/fr not_active Expired - Lifetime
- 1998-07-07 DE DE69804801T patent/DE69804801T2/de not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
WO1999002834A1 (fr) | 1999-01-21 |
EP0995023A1 (fr) | 2000-04-26 |
FR2766005A1 (fr) | 1999-01-15 |
DE69804801D1 (de) | 2002-05-16 |
FR2766005B1 (fr) | 1999-09-17 |
DE69804801T2 (de) | 2002-11-28 |
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