FR2547628A1 - Computer controlled drive circuit for solenoid - Google Patents

Computer controlled drive circuit for solenoid Download PDF

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Publication number
FR2547628A1
FR2547628A1 FR8405005A FR8405005A FR2547628A1 FR 2547628 A1 FR2547628 A1 FR 2547628A1 FR 8405005 A FR8405005 A FR 8405005A FR 8405005 A FR8405005 A FR 8405005A FR 2547628 A1 FR2547628 A1 FR 2547628A1
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FR
France
Prior art keywords
transistor
current
resistor
capacitor
solenoid
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.)
Granted
Application number
FR8405005A
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French (fr)
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FR2547628B1 (en
Inventor
Martin Klenk
Heinz Moller
Jochen Schafer
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
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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.)
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Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of FR2547628A1 publication Critical patent/FR2547628A1/en
Application granted granted Critical
Publication of FR2547628B1 publication Critical patent/FR2547628B1/en
Expired 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
    • F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
    • F02D41/26—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using computer, e.g. microprocessor
    • 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
    • F02D2041/202—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

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Magnetically Actuated Valves (AREA)
  • Feedback Control In General (AREA)

Abstract

The inductive load (1) e.g. the solenoid of an electrically operated carburettor is energised by a pulse width modulated voltage which is generated by a switching transistor (2), The voltage drop across a resistor (RM) in the transistor emitter circuit is filtered (R,C) and fed to an amplifier (3), its output forming the input to the A to D converter (4). This digitised signal is presented to the input of the microprocessor system (5), the output of which drives the solenoid controlling transistor (2), thus closing the control loop. Inductive current flowing during the transistor 'off'time is prevented from exceeding the supply voltage by a capacitor (C1) which charges during this period. A resistor (R1) limits the rate of discharge of the capacitor when the transistor switches 'on'.

Description

DISPOSITIF POUR LA COMMANDE D'UN ORGANE DE REGLAGE
A INDUCTION NOTAMMENT D'UN CARBURATEUR
L'invention concerne un dispositif pour la commande d'un organe de réglage à induction comportant une bobine excitatrice, notamment d'un carburateur ou autre appareil du même genre, au moyen d'un courant de commande intermittent, passant par un commutateur électronique et une résis- tance de mesure montée en série avec celui-ci, courant qui produit sur celle-ci une tension de mesure correspondant à la valeur effective de ce courant.DEVICE FOR CONTROLLING AN ADJUSTMENT MEMBER
WITH INDUCTION IN PARTICULAR OF A CARBURETOR
The invention relates to a device for controlling an induction regulating member comprising an excitation coil, in particular of a carburetor or other similar device, by means of an intermittent control current, passing through an electronic switch and a measurement resistor connected in series therewith, a current which produces a measurement voltage thereon corresponding to the effective value of this current.

On connait déjà des organes de réglage purement électronique6 - notamment désignés comme régulateurs rotatifs à double enroulement - qui sont actionnés par un courant de commande intermittent, une succession d'impulsions à cadence réglable étant alors prédétXrminée pour la commande. There are already known purely electronic adjustment members6 - in particular designated as rotary double winding regulators - which are actuated by an intermittent control current, a succession of pulses with adjustable rate then being predetermined for control.

L'invention a pour but, avec un dispositif du type indiqué dans le préambule, d'obtenir avec sureté que le courant prédéterminé avec une valeur prescrite se trouve assuré avec la plus grande précision possible dans l'organe de réglage. The object of the invention is, with a device of the type indicated in the preamble, to obtain with certainty that the predetermined current with a prescribed value is ensured with the greatest possible precision in the adjustment member.

L'invention concerne à cet effet un dispositif de ce genre qui est caractérisé en ce que la tension de mesure est appliquée, par l'intermédiaire d'un convertisseur analogique/numérique, à un ordinateur qui est placé dans le circuit de commande du commutateur et détermine la cadence de fonctionnement de ce commutateur. The invention relates for this purpose to a device of this kind which is characterized in that the measurement voltage is applied, via an analog / digital converter, to a computer which is placed in the control circuit of the switch and determines the rate of operation of this switch.

Le commutateur et une résistance de limitation avec une diode montée en parallèle peuvent avantageusemenet être reliés à la bobine excitatrice de l'organe de réglage et un condensateur d'accumulation peut être raccordé à la résistance et à la diode. Ce condensateur reçoit, après l'ouverture du commutateur, le courant qui va encore passer par la bobine, de telle sorte que ce courant peut s'accumuler dans le condensateur. The switch and a limiting resistor with a diode mounted in parallel can advantageously be connected to the excitation coil of the regulating member and an accumulation capacitor can be connected to the resistor and to the diode. This capacitor receives, after opening the switch, the current which will still pass through the coil, so that this current can accumulate in the capacitor.

De façon avantageuse, le condensateur peut être réalisé d'une grandeur telle, que la tension qui se présente à ce condensateur ne s'élève pas au-dessus de la valeur de la tension de la source de courant continu prévue pour le fonctionnement du dispositif, sinon il pourrait se produire un retour de courant à travers le récepteur, à savoir notamment la bobine excitatrice de l'organe de réglage. Advantageously, the capacitor can be made of a size such that the voltage which is presented to this capacitor does not rise above the value of the voltage of the direct current source provided for the operation of the device. , otherwise there could be a return of current through the receiver, namely in particular the excitation coil of the regulating member.

Grâce à 11 utilisation de l'ordinateur on peut obtenir un montage très simple et par suite très économique de ltétage final prévu pour 11 organe de réglage, et en mme temps une possibilité de réglage très précise. Thanks to the use of the computer, it is possible to obtain a very simple and consequently very economical assembly of the final stage provided for the adjusting member, and at the same time a very precise adjustment possibility.

I1 est alors avantageux que le courant moyen qui passe par le récepteur (bobine) passe également par la résistance de mesure RN: on a ainsi la possibilité d'effectuer une mesure précise du courant passant par la bobine. It is then advantageous for the average current which passes through the receiver (coil) also to pass through the measurement resistor RN: it is thus possible to carry out an accurate measurement of the current passing through the coil.

L'invention sera mieux comprise à l'aide de la description ci-après et du dessin annexé représentant un exemple de réalisation de l'invention. The invention will be better understood with the aid of the description below and the appended drawing representing an exemplary embodiment of the invention.

La figure unique de ce dessin montre un schéma de montage électrique du dispositif de commande conforme à l'invention. The single figure of this drawing shows an electrical circuit diagram of the control device according to the invention.

Le dispositif tel que représenté sert à la commande d'un organe de réglage à induction, comportant une bobine excitatrice 1 cet organe de réglage n'étant pas représenté par ailleurs - par exemple d'un carburateur pour moteur de véhicule automobile. La bobine excitatrice 1 est traversée par un courant de commande intermittent, que l'on fait passer par un commutateur électrique, constitué sous forme d1un transistor 2, et qui provient d'une source de courant continu, non représentée, qui est raccordée par l'un de ses deux pôles à la masse et par son autre pôle à la charge 1. The device as shown is used to control an induction adjustment member, comprising an excitation coil 1 this adjustment member not being shown elsewhere - for example a carburetor for a motor vehicle engine. The excitation coil 1 is crossed by an intermittent control current, which is passed through an electrical switch, constituted in the form of a transistor 2, and which comes from a direct current source, not shown, which is connected by the 'one of its two poles to ground and by its other pole to load 1.

On fait passer ce courant de service à travers une résistance de mesure RN raccordée à l'émetteur du transistor 2. I1 se produit là une chute de tension correspondant à la grandeur qui se présente du courant de service. Cette chute de tension est filtrée par l'intermédiaire d'un élément de filtrage constitué par une résistance R et un condensateur
C et transmise par un amplificateur 3 à un convertisseur analogique/nusérique 4.This service current is passed through a measurement resistor RN connected to the emitter of transistor 2. There there occurs a voltage drop corresponding to the quantity which occurs in the service current. This voltage drop is filtered through a filter element consisting of a resistor R and a capacitor
C and transmitted by an amplifier 3 to an analog / digital converter 4.

Ce convertisseur 4 commande une calculatrice constituée sous forme de micro-ordinateur 5. Le signal numérique fourni par ltordinateur 5 à la base du transistor 2 - signal ui correspond à la comparaison de la valeur effective avec la valeur prescrite du courant de service - détermine la cadence de passage du courant de service dans le fonctionnement intermittent. This converter 4 controls a calculator constituted in the form of a microcomputer 5. The digital signal supplied by the computer 5 at the base of the transistor 2 - signal ui corresponds to the comparison of the actual value with the prescribed value of the operating current - determines the rate of service current flow in intermittent operation.

Entre le collecteur du transistor 2 et la bobine excitatrice 1 l'on a prévu une diode
D et une résistance de limitation Rt; ces deux éléments sont reliés à une électrode d'un condensateur d'accu mulation C1, relié par son autre électrode à la masse.Between the collector of transistor 2 and the excitation coil 1 a diode is provided
D and a limiting resistance Rt; these two elements are connected to an electrode of a storage capacitor C1, connected by its other electrode to ground.

Lorsque le transistor 2 passe à son état bloqué le courant traversant dès lors la bobine excitatrice 1 va temporairement passer audelà et est alors accumulé dans le condensateur C1. When the transistor 2 goes to its blocked state, the current flowing through the excitation coil 1 will temporarily go beyond and is then accumulated in the capacitor C1.

Ce condensateur est réalisé d'une grandeur telle, que la tension qui sty présente alors ne peut pas s'élever au-dessus de la valeur de la tension de service, car sinon il se produirait un retour de courant par le récepteur 1.This capacitor is made of such a size that the voltage which then presents cannot rise above the value of the operating voltage, because otherwise there would be a return of current by the receiver 1.

La résistance R1 limite lorsqu'elle est mise en circuit le courant de décharge du condensateur C1. Resistor R1 limits the discharge current of capacitor C1 when it is switched on.

Dans une situation de service dans laquelle il ne doit pas passer de courant par la bobine, il se produit un équilibrage de compensation par lordinateur 5. Dans ce cas, le courant qui passe par la résistance de mesure Wpl est égale à zéro et le signal de sortie au convertisseur 4 correspond à la compensation totale, Cette compensation est prise en compte par l'ordinateur 5 lors de la comparaison valeur prescrite - valeur effective0  In a service situation in which there must be no current flowing through the coil, compensation balancing occurs by the computer 5. In this case, the current flowing through the measurement resistor Wpl is equal to zero and the signal output to converter 4 corresponds to total compensation, This compensation is taken into account by computer 5 when comparing prescribed value - actual value0

Claims (3)

REVENDICATIONS 1- Dispositif pour la commande d'un organe de réglage à induction, comportant une bobine excitatrice, notamment d'un carburateur ou appareil analogue, au moyen d'un courant de commande intermittent, passant par un commutateur électronique et une résistance de mesure (tek) montée en série, courant qui produit sur celle-ci une tension de mesure correspondant à la valeur effective de ce courant, dispositif caractérisé en ce que la tension de mesure est appliquée par l'intermédiaire d'un convertisseur analogique/numérique (4) à un ordinateur (5), qui est placé dans le circuit de commande du commutateur et détermine la cadence de fonctionnement de ce commutateur (2). 1- Device for controlling an induction regulating member, comprising an excitation coil, in particular of a carburetor or similar device, by means of an intermittent control current, passing through an electronic switch and a measurement resistor ( tek) connected in series, current which produces a measurement voltage thereon corresponding to the effective value of this current, device characterized in that the measurement voltage is applied via an analog / digital converter (4 ) to a computer (5), which is placed in the switch control circuit and determines the rate of operation of this switch (2). 2- Dispositif selon la revendication 1, caractérisé en ce que une résistance de limitation (R1) et une diode (D) montée en parallèle sont reliées à la bobine excitatrice (1) et un condensateur d'accumulation (C1) est raccordé à la résistance et à la diode. 2- Device according to claim 1, characterized in that a limiting resistor (R1) and a diode (D) mounted in parallel are connected to the exciting coil (1) and an accumulation capacitor (C1) is connected to the resistance and the diode. 3- Dispositif selon l'une ou l'autre des revendications 1 et 2, caractérisé en ce que un équilibrage de compensation s'effectue au moyen de ltordinateur (5) et/ou du convertisseur analogique/numérique (4).  3- Device according to either of claims 1 and 2, characterized in that a compensation balancing is carried out by means of the computer (5) and / or the analog / digital converter (4).
FR8405005A 1983-06-18 1984-03-30 DEVICE FOR CONTROLLING AN INDUSTION ADJUSTMENT MEMBER, PARTICULARLY A CARBURETOR Expired FR2547628B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19833322006 DE3322006A1 (en) 1983-06-18 1983-06-18 Device for controlling an inductive final control element, especially a carburetter

Publications (2)

Publication Number Publication Date
FR2547628A1 true FR2547628A1 (en) 1984-12-21
FR2547628B1 FR2547628B1 (en) 1989-01-20

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FR8405005A Expired FR2547628B1 (en) 1983-06-18 1984-03-30 DEVICE FOR CONTROLLING AN INDUSTION ADJUSTMENT MEMBER, PARTICULARLY A CARBURETOR

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JP (1) JPS6011902A (en)
DE (1) DE3322006A1 (en)
FR (1) FR2547628B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992000447A1 (en) * 1990-06-23 1992-01-09 Robert Bosch Gmbh Process and device for controlling an electromagnetic consumer
WO2008152039A1 (en) * 2007-06-12 2008-12-18 Delphi Technologies, Inc. Electrical drive arrangement for a fuel injection system

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3007078A1 (en) * 1980-02-26 1981-09-10 Bayer Ag, 5090 Leverkusen NEW DERIVATIVES OF 3,4,5-TRIHYDROXYPIPERIDINE, METHOD FOR THE PRODUCTION THEREOF AND THEIR USE AS A MEDICINAL PRODUCT AND IN ANIMAL FOOD
DE3344662A1 (en) * 1983-12-09 1985-06-13 Mannesmann Rexroth GmbH, 8770 Lohr Circuit arrangement for driving a solenoid valve, especially for fuel-injection valves
DE3508187A1 (en) * 1985-03-05 1986-09-11 Oelsch KG, 1000 Berlin VALVE CONTROL
DE3723712A1 (en) * 1987-07-17 1989-01-26 Kuhnke Gmbh Kg H Device having a plurality of electrical units, especially solenoid valves
US4964014A (en) * 1989-01-06 1990-10-16 Deere & Company Solenoid valve driver
DE3922900A1 (en) * 1989-07-12 1991-01-17 Wabco Westinghouse Fahrzeug Monitoring of electromagnetic actuator - using circuit coupled to microprocessor to provide input that can be compared with reference to identify fault
KR930011184B1 (en) * 1990-08-03 1993-11-25 삼성전자 주식회사 Hammer solenoid bi-level driving circuit
DE4041930A1 (en) * 1990-12-27 1992-07-02 Bilstein August Gmbh Co Kg Controllable car shock absorber with by=pass valve(s) - is incorporated in electric circuit via inductive loads, engaged by rapid clock pulse signal train
DE4202761C2 (en) * 1992-01-31 1995-10-05 Hella Kg Hueck & Co Circuit for the control and monitoring of inductive loads, especially of solenoid valves in an anti-lock control system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2418336A1 (en) * 1978-02-27 1979-09-21 Bendix Corp CIRCUIT FOR INSTALLING THREE LEVELS OF CURRENT CURRENT, ESPECIALLY IN THE COIL OF AN INJECTOR
EP0075303A2 (en) * 1981-09-21 1983-03-30 Hitachi, Ltd. Fuel injection valve drive circuit
JPS5939951A (en) * 1982-08-31 1984-03-05 Toyota Motor Corp Idling speed controller of internal-combustion engine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2418336A1 (en) * 1978-02-27 1979-09-21 Bendix Corp CIRCUIT FOR INSTALLING THREE LEVELS OF CURRENT CURRENT, ESPECIALLY IN THE COIL OF AN INJECTOR
EP0075303A2 (en) * 1981-09-21 1983-03-30 Hitachi, Ltd. Fuel injection valve drive circuit
JPS5939951A (en) * 1982-08-31 1984-03-05 Toyota Motor Corp Idling speed controller of internal-combustion engine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN; vol. 8, no. 143 (M-306)[1580], 4 juillet 1984; & JP - A - 59 39951 (TOYATA) 05-03-1984 (Cat. P,X) *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992000447A1 (en) * 1990-06-23 1992-01-09 Robert Bosch Gmbh Process and device for controlling an electromagnetic consumer
WO2008152039A1 (en) * 2007-06-12 2008-12-18 Delphi Technologies, Inc. Electrical drive arrangement for a fuel injection system
JP2010527084A (en) * 2007-06-12 2010-08-05 デルファイ・テクノロジーズ・インコーポレーテッド Electrical drive configuration for a fuel injection system
EP2584183A1 (en) * 2007-06-12 2013-04-24 Delphi Technologies Holding S.à.r.l. Electrical Drive Arrangement for a Fuel Injection System

Also Published As

Publication number Publication date
DE3322006A1 (en) 1984-12-20
FR2547628B1 (en) 1989-01-20
JPS6011902A (en) 1985-01-22

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