EP0921306A2 - Control device for an automotive vehicle starter - Google Patents

Control device for an automotive vehicle starter Download PDF

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Publication number
EP0921306A2
EP0921306A2 EP98403005A EP98403005A EP0921306A2 EP 0921306 A2 EP0921306 A2 EP 0921306A2 EP 98403005 A EP98403005 A EP 98403005A EP 98403005 A EP98403005 A EP 98403005A EP 0921306 A2 EP0921306 A2 EP 0921306A2
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EP
European Patent Office
Prior art keywords
voltage
management unit
input
control
switch
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Granted
Application number
EP98403005A
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German (de)
French (fr)
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EP0921306A3 (en
EP0921306B1 (en
Inventor
Gérard Vilou
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Valeo Equipements Electriques Moteur SAS
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Valeo Equipements Electriques Moteur SAS
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Publication of EP0921306A3 publication Critical patent/EP0921306A3/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N11/00—Starting of engines by means of electric motors
    • F02N11/08—Circuits or control means specially adapted for starting of engines
    • F02N11/087—Details of the switching means in starting circuits, e.g. relays or electronic switches
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N11/00—Starting of engines by means of electric motors
    • F02N11/10—Safety devices

Definitions

  • the present invention relates to devices for controlling a motor vehicle starter.
  • the invention relates to starter control devices, which have management resources which are permanently under tension.
  • This electric motor M is mounted between ground and a + BAT terminal at the supply voltage of the drums.
  • the power contactor 1 is constituted by a relay which includes a contact K, which is interposed between the power supply terminal + BAT and the motor M, as well as a winding B with one or more windings.
  • This coil B is mounted, between the + BAT terminal and the earth, in series with a controlled switch T1.
  • This switch T1 is for example a transistor of the type MOSFET, the grid of which is voltage-controlled by a management unit 2 by its terminal S.
  • the management unit 2 is supplied by a link independent of that on which is the start switch 3. It for this purpose has a supply input ⁇ Va ⁇ which is directly connected to the + Bat terminal.
  • said management unit 2 is constantly under tension and that's why it incorporates usually a standby system, not shown, which limits consumption electronic when the vehicle is not operating and this prevents too rapid discharge of the battery.
  • the operation is as follows.
  • the start switch 3 is closed, for example by activation of the ignition key, the standby system is inhibited and management unit 2 takes over all of its functionality. If the different functions of starter protection do not detect any anomaly, the management unit 2 unlocks the transistor "T1", so as to supply the winding B of the contactor 1. Motor M is then supplied.
  • management unit 2 detects engine start thermal, transistor T1 is blocked and the starter returns to rest. After a specified time, the system returns to the standby state.
  • An object of the invention is to overcome these disadvantages.
  • the invention provides a device for the control of a motor vehicle starter with a management unit which is permanently energized and an input of which is connected to a start command, said management unit commanding the starter electric motor supply in function in particular of the signal it receives on said entrance, characterized in that it further comprises additional means which prevent the ordering of the supply of the electric motor by said unit of management if the signal received by said unit on its input connected to the controller does not match so effective at a start command signal.
  • the invention also relates to a starter for motor vehicle comprising a control device of the aforementioned type.
  • these means 4 make it possible to do not impose a high voltage on the gate of transistor T1 closing only if both the control voltage generated by the management unit 2 on its output ⁇ s ⁇ and the voltage on its input ⁇ e ⁇ are at a high level. This makes it possible to verify that the startup is indeed voluntary.
  • these means 4 include a logic gate "N" of the NAND type (NAND according to Anglo-Saxon terminology commonly employed) which receives respectively the input voltages on the input ⁇ e ⁇ and the output ⁇ s ⁇ of the unit 2.
  • the output of this door N controls the base of a bipolar transistor T2 of the npn type, the collector is connected to the gate of transistor T1 and of which the transmitter is connected to ground.
  • the means 4 do not allow polarization positive of the gate of transistor T1 only if the start switch is closed.
  • a resistor R is also mounted between the output ⁇ s ⁇ and the gate of transistor T1, so that gate N actually receives the input voltage generated on output "s", even if T2 is on.
  • the means 4 do not include a carries NAND, but an inverter type I mounting, which is mounted between the input ⁇ e ⁇ of unit 2 and the base of the transistor T2.
  • This inverter mounting I maintains the grid of T1 at level 0 as long as the start switch 3 is open, regardless of the voltage level of the exits".
  • management unit 2 is not controlled by the start switch, but by control signals that another unit of management which manages for example anti-theft security and engine control.
  • FIG. 4 A variant in this sense has been illustrated on the FIG. 4, in which a motor M of starter, as well as a control device which behaves, in the same way as those of the figures previous, a contactor 1 which includes a contact power K and a winding B, a switch T1 which controls the supply of winding B and a management 2 which controls the switch T1.
  • Said management unit 2 is itself controlled by a second management unit 5, which transmits to it the start order in the form of a coded signal.
  • the control device also includes means 4 which do not allow the positive polarization of the gate of transistor T1 only if the start order is actually sent by unit 5, i.e. if the voltage on the input ⁇ e ⁇ is at its high level.
  • these means are of the type described with reference to the figure 3. They include an inverter mounting I receiving on its input the voltage injected on the input ⁇ e ⁇ by the decoder 6. The output voltage of this circuit inverter I controls the base of a bipolar transistor T2 npn type, whose transmitter is connected to ground and whose the collector is connected to the gate of transistor T1.
  • the status of the decoder output is linked to a inverter "I" as described in variant 1.

Abstract

The starter motor (M) is controlled through a solenoid (B,K) having a transistor (T1) to drive the solenoid coil. The activation of the coil is blocked by a second transistor (T2) controlled by a circuit (2) which compares any signal received by the starter control circuit with an expected starting signal, and releases the transistor circuit only if the signal is as expected.

Description

La présente invention est relative aux dispositifs pour la commande d'un démarreur de véhicule automobile.The present invention relates to devices for controlling a motor vehicle starter.

Plus particulièrement, l'invention concerne les dispositifs de commande de démarreur, qui présentent des moyens de gestion qui sont en permanence sous tension.More particularly, the invention relates to starter control devices, which have management resources which are permanently under tension.

Un exemple de dispositif de ce type est illustré sur la figure 1, sur laquelle on a référencé par M le moteur électrique d'un démarreur de véhicule automobile et par 1 le contacteur de puissance qui commande l'alimentation de ce moteur M.An example of such a device is illustrated on Figure 1, on which we have referenced by M the motor motor vehicle starter and by 1 the power contactor which controls the supply of this engine M.

Ce moteur électrique M est monté entre la masse et une borne + BAT à la tension d'alimentation de la batterie.This electric motor M is mounted between ground and a + BAT terminal at the supply voltage of the drums.

Le contacteur de puissance 1 est constitué par un relais qui comprend un contact K, qui est interposé entre la borne d'alimentation +BAT et le moteur M, ainsi qu'un bobinage B à un ou plusieurs enroulements.The power contactor 1 is constituted by a relay which includes a contact K, which is interposed between the power supply terminal + BAT and the motor M, as well as a winding B with one or more windings.

Ce bobinage B est monté, entre la borne +BAT et la masse, en série avec un interrupteur commandé T1. Cet interrupteur T1 est par exemple un transistor de type MOSFET, dont la grille est commandée en tension par une unité de gestion 2 par sa borne S.This coil B is mounted, between the + BAT terminal and the earth, in series with a controlled switch T1. This switch T1 is for example a transistor of the type MOSFET, the grid of which is voltage-controlled by a management unit 2 by its terminal S.

Cette unité de gestion 2 est généralement constituée par un microprocesseur dont une entrée analogique e est reliée à la borne +Bat par l'interrupteur de démarrage 3 du véhicule. Elle assure différentes fonctions :

  • analyse de l'état ouvert ou fermé de l'interrupteur de démarrage 3 et gestion de la séquence d'alimentation du moteur M en fonction de cette information ;
  • arrêt automatique du démarreur lorsque le moteur thermique est démarré ;
  • protection du démarreur contre d'éventuelles surcharges ou fausses manoeuvre.
This management unit 2 is generally constituted by a microprocessor, an analog input e of which is connected to the terminal + Bat by the start switch 3 of the vehicle. It performs various functions:
  • analysis of the open or closed state of the start switch 3 and management of the supply sequence of the motor M as a function of this information;
  • automatic starter stop when the engine is started;
  • protection of the starter against possible overloads or incorrect operation.

Dans le montage de la figure 1, l'unité de gestion 2 est alimentée par une liaison indépendante de celle sur laquelle se trouve l'interrupteur de démarrage 3. Elle présente à cet effet une entrée d'alimentation 〈〈 Va 〉〉 qui est directement reliée à la borne +Bat.In the assembly of FIG. 1, the management unit 2 is supplied by a link independent of that on which is the start switch 3. It for this purpose has a supply input 〈〈 Va 〉〉 which is directly connected to the + Bat terminal.

Par conséquent, ladite unité de gestion 2 est constamment sous tension et c'est pourquoi elle intègre habituellement un système de mise en veille, non représenté, qui permet de limiter la consommation électronique lorsque le véhicule ne fonctionne pas et évite ainsi une décharge trop rapide de la batterie.Consequently, said management unit 2 is constantly under tension and that's why it incorporates usually a standby system, not shown, which limits consumption electronic when the vehicle is not operating and this prevents too rapid discharge of the battery.

Le fonctionnement est le suivant. Lorsque l'interrupteur de démarrage 3 est fermé, par exemple par l'actionnement de la clé de contact, le système de veille est inhibé et l'unité de gestion 2 reprend l'ensemble de ses fonctionnalités. Si les différentes fonctions de protection du démarreur ne décèlent aucune anomalie, l'unité de gestion 2 débloque le transistor "T1", de façon à permettre l'alimentation du bobinage B du contacteur 1. Le moteur M est alors alimenté. Lorsque l'unité de gestion 2 détecte le démarrage du moteur thermique, le transistor T1 se bloque et le démarreur revient au repos. Après un temps déterminé, le système revient à l'état de veille.The operation is as follows. When the start switch 3 is closed, for example by activation of the ignition key, the standby system is inhibited and management unit 2 takes over all of its functionality. If the different functions of starter protection do not detect any anomaly, the management unit 2 unlocks the transistor "T1", so as to supply the winding B of the contactor 1. Motor M is then supplied. When management unit 2 detects engine start thermal, transistor T1 is blocked and the starter returns to rest. After a specified time, the system returns to the standby state.

Toutefois, les structures de ce type présentent plusieurs inconvénients. Notamment, il peut arriver que des signaux parasites ou une défaillance quelconque de l'électronique de l'unité de gestion 2 déclenchent intempestivement la fermeture de l'interrupteur T1.However, structures of this type exhibit several disadvantages. In particular, it may happen that spurious signals or any failure of management unit 2 electronics trigger inadvertently closing the switch T1.

Cet événement, bien que rare, entraíne des risques importants. Notamment, si le véhicule est à l'arrêt et qu'une vitesse est enclenchée, le véhicule, entraíné par le démarreur, se déplacera de lui-même ; ou encore, si le frein à main est serré ou si aucune vitesse n'est enclenchée, le démarreur peut fonctionner jusqu'à destruction et il y a un risque que les échauffements excessifs qui pourraient en résulter causent un début d'incendie sur le véhicule.This event, although rare, involves risks important. In particular, if the vehicle is stationary and that a gear is engaged, the vehicle, driven by the starter, will move by itself; or if the handbrake is applied or no speed is applied engaged, the starter can operate up to destruction and there is a risk that overheating that could result cause a start fire on the vehicle.

Un but de l'invention est de pallier ces inconvénients.An object of the invention is to overcome these disadvantages.

A cet effet, l'invention propose un dispositif pour la commande d'un démarreur de véhicule automobile comportant une unité de gestion qui est en permanence sous tension et dont une entrée est reliée à un organe de commande de démarrage, ladite unité de gestion commandant l'alimentation du moteur électrique du démarreur en fonction notamment du signal qu'elle reçoit sur ladite entrée, caractérisé en ce qu'il comporte en outre des moyens complémentaires qui empêchent la commande de l'alimentation du moteur électrique par ladite unité de gestion si le signal reçu par ladite unité sur son entrée reliée à l'organe de commande ne correspond pas de façon effective à un signal de commande de démarrage.To this end, the invention provides a device for the control of a motor vehicle starter with a management unit which is permanently energized and an input of which is connected to a start command, said management unit commanding the starter electric motor supply in function in particular of the signal it receives on said entrance, characterized in that it further comprises additional means which prevent the ordering of the supply of the electric motor by said unit of management if the signal received by said unit on its input connected to the controller does not match so effective at a start command signal.

Ce dispositif est avantageusement complété par les différentes caractéristiques suivantes prises seules ou selon toutes leurs combinaisons techniquement possibles :

  • l'unité de gestion reçoit sur son entrée qui est reliée à l'organe de commande une tension qui selon que le démarrage est commandé ou non par ledit organe est à un niveau haut ou à un niveau bas et les moyens complémentaires comportent des moyens qui n'autorisent la commande de l'alimentation du moteur électrique par ladite unité de gestion que si la tension sur ladite entrée est à son niveau qui correspond à la commande du démarrage par l'organe de commande ;
  • l'unité de gestion génère une tension de sortie dont le niveau commande un interrupteur qui lui-même commande l'alimentation du moteur électrique du démarreur, les moyens complémentaires maintenant la tension de commande dudit interrupteur à un niveau empêchant l'alimentation du moteur électrique lorsque la tension sur l'entrée de l'unité de gestion est à un niveau qui correspond à l'absence de commande de démarrage par l'organe de commande.
  • les moyens complémentaires comportent des moyens de type à porte(s) logique(s) qui reçoivent en entrée la tension en entrée de l'unité de gestion et la tension de commande en sortie de celle-ci ;
  • la tension en entrée de l'unité de gestion est à un niveau haut lors d'une commande de démarrage par l'organe de commande, l'interrupteur qui commande l'alimentation du moteur électrique étant fermé lorsque sa tension de commande est à un niveau haut, les moyens complémentaires comportant une porte logique NON ET qui reçoit en entrée la tension en entrée de l'unité de gestion et la tension de commande en sortie de celle-ci, la tension en sortie de ladite porte commandant la base d'un transistor qui est monté entre la masse et un point qui est également relié à la sortie de l'unité de gestion et dont la tension commande l'interrupteur ;
  • des moyens résistifs sont interposés entre ledit point de commande de l'interrupteur et la sortie de l'unité de gestion ;
  • la tension en entrée de l'unité de gestion est à un niveau haut lors d'une commande de démarrage par l'organe de commande, l'interrupteur qui commande l'alimentation du moteur électrique étant fermé lorsque sa tension de commande est à un niveau haut, les moyens complémentaires comportant un montage inverseur qui reçoit en entrée la tension en entrée de l'unité de gestion et dont la tension de sortie commande la base d'un transistor qui est monté entre la masse et un point qui est également relié à la sortie de l'unité de gestion et dont la tension commande l'interrupteur ;
  • l'organe de commande est un interrupteur de démarrage ;
  • l'organe de commande est constitué par une deuxième unité de gestion qui transmet à la première unité de gestion un ordre de démarrage sous la forme d'un signal codé et ledit dispositif comporte des moyens de décodage qui sont interposés entre l'entrée de la première unité de gestion et la deuxième unité de gestion et qui transforment ce signal codé en un signal de tension.
This device is advantageously supplemented by the following different characteristics taken alone or in all their technically possible combinations:
  • the management unit receives at its input which is connected to the control member a voltage which, depending on whether the start-up is controlled or not by said member, is at a high level or at a low level and the complementary means include means which authorize the control of the supply of the electric motor by said management unit only if the voltage on said input is at its level which corresponds to the control of starting by the control member;
  • the management unit generates an output voltage, the level of which controls a switch which itself controls the supply of the electric motor to the starter, the complementary means maintaining the control voltage of said switch at a level preventing supply of the electric motor when the voltage on the input of the management unit is at a level which corresponds to the absence of a start command by the control member.
  • the complementary means comprise means of the logic gate (s) type which receive as input the voltage at the input of the management unit and the control voltage at the output thereof;
  • the input voltage of the management unit is at a high level during a start command by the control member, the switch which controls the supply of the electric motor being closed when its control voltage is at a high level, the additional means comprising a NAND logic gate which receives the input voltage at the input of the management unit and the control voltage at the output thereof, the voltage at the output of said gate controlling the base a transistor which is mounted between ground and a point which is also connected to the output of the management unit and whose voltage controls the switch;
  • resistive means are interposed between said switch control point and the output of the management unit;
  • the input voltage of the management unit is at a high level during a start command by the control member, the switch which controls the supply of the electric motor being closed when its control voltage is at a high level, the complementary means comprising an inverter assembly which receives the input voltage at the input of the management unit and the output voltage of which controls the base of a transistor which is mounted between ground and a point which is also connected at the output of the management unit and whose voltage controls the switch;
  • the control member is a start switch;
  • the control member is constituted by a second management unit which transmits to the first management unit a start command in the form of a coded signal and said device comprises decoding means which are interposed between the input of the first management unit and the second management unit and which transform this coded signal into a voltage signal.

L'invention concerne également un démarreur de véhicule automobile comportant un dispositif de commande du type précité.The invention also relates to a starter for motor vehicle comprising a control device of the aforementioned type.

D'autres caractéristiques et avantages de l'invention ressortiront encore de la description qui suit qui est purement illustrative et non limitative et qui doit être lue en regard des dessins annexés sur lesquels :

  • la figure 1, déjà analysée, est une représentation schématique d'un dispositif de commande de démarreur conforme à un art antérieur connu ;
  • les figures 2 à 4 sont des représentations semblables à celle de la figure1 illustrant trois modes de réalisations possibles conformes à l'invention.
Other characteristics and advantages of the invention will emerge from the following description which is purely illustrative and not limiting and which must be read with reference to the appended drawings in which:
  • Figure 1, already analyzed, is a schematic representation of a starter control device according to a known prior art;
  • Figures 2 to 4 are representations similar to that of Figure 1 illustrating three possible embodiments according to the invention.

Le dispositif de commande illustré sur la figure 2 comporte, de la même façon que celui de la figure 1 :

  • un contacteur 1 qui comprend un contact de puissance K et un bobinage B,
  • un interrupteur T1 qui commande l'alimentation du bobinage B,
  • une unité de gestion 2 qui commande l'interrupteur T1.
The control device illustrated in FIG. 2 comprises, in the same way as that of FIG. 1:
  • a contactor 1 which includes a power contact K and a winding B,
  • a switch T1 which controls the supply of the winding B,
  • a management unit 2 which controls the switch T1.

Il diffère principalement de celui qui a été décrit en référence à la figure 1 par le fait qu'il comporte des moyens 4 qui permettent d'empêcher la commande de la fermeture de l'interrupteur T1, lorsque l'interrupteur de démarrage 3 n'est pas fermé. It differs mainly from that which has been described with reference to FIG. 1 by the fact that it includes means 4 which make it possible to prevent control of the closing of the switch T1, when the switch of start 3 is not closed.

Plus précisément, ces moyens 4 permettent de n'imposer à la grille du transistor T1une tension haute de fermeture que si à la fois la tension de commande générée par l'unité de gestion 2 sur sa sortie 〈〈 s 〉〉 et la tension sur son entrée 〈〈 e 〉〉 sont à un niveau haut. Ceci permet de vérifier que le démarrage est bien volontaire.More precisely, these means 4 make it possible to do not impose a high voltage on the gate of transistor T1 closing only if both the control voltage generated by the management unit 2 on its output 〈〈 s 〉〉 and the voltage on its input 〈〈 e 〉〉 are at a high level. This makes it possible to verify that the startup is indeed voluntary.

Dans l'exemple illustré sur cette figure 2, ces moyens 4 comportent une porte logique "N" du type NON ET (NAND selon la terminologie anglo-saxonne couramment employée) qui reçoit respectivement en entrée les tensions sur l'entrée 〈〈 e 〉〉 et la sortie 〈〈 s〉〉 de l'unité de gestion 2. La sortie de cette porte N commande la base d'un transistor bipolaire T2 de type npn, dont le collecteur est relié à la grille du transistor T1 et dont l'émetteur est relié à la masse.In the example illustrated in this figure 2, these means 4 include a logic gate "N" of the NAND type (NAND according to Anglo-Saxon terminology commonly employed) which receives respectively the input voltages on the input 〈〈 e 〉〉 and the output 〈〈 s 〉〉 of the unit 2. The output of this door N controls the base of a bipolar transistor T2 of the npn type, the collector is connected to the gate of transistor T1 and of which the transmitter is connected to ground.

C'est seulement dans le cas où la tension d'entrée "e" et la tension de sortie "S" sont au niveau haut que le transistor T2 se débloque, ce qui permet la polarisation de la grille du transistor de puissance T1. Dans tous les autres cas, T2 est passant, ce qui maintient T1 à l'état bloqué.Only when the input voltage "e" and the output voltage "S" are at the high level that the transistor T2 turns on, which allows the polarization of the gate of the power transistor T1. In all other cases, T2 is passing, which maintains T1 in the blocked state.

Ainsi, les moyens 4 n'autorisent la polarisation positive de la grille du transistor T1 que si l'interrupteur de démarrage est fermé.Thus, the means 4 do not allow polarization positive of the gate of transistor T1 only if the start switch is closed.

Une résistance R est par ailleurs montée entre la sortie 〈〈 s 〉〉 et la grille du transistor T1, de sorte que la porte N reçoit effectivement en entrée la tension générée sur la sortie "s", même si T2 est passant.A resistor R is also mounted between the output 〈〈 s 〉〉 and the gate of transistor T1, so that gate N actually receives the input voltage generated on output "s", even if T2 is on.

D'autres variantes de réalisation sont bien entendu envisageables.Other variant embodiments are of course possible.

Notamment, dans la variante de réalisation illustrée sur la figure 3, les moyens 4 comportent non pas une porte NON ET, mais un montage I de type inverseur, qui est monté entre l'entrée 〈〈 e 〉〉 de l'unité 2 et la base du transistor T2. In particular, in the illustrated embodiment in FIG. 3, the means 4 do not include a carries NAND, but an inverter type I mounting, which is mounted between the input 〈〈 e 〉〉 of unit 2 and the base of the transistor T2.

Ce montage inverseur I maintient la grille de T1 au niveau 0 tant que l'interrupteur de démarrage 3 est ouvert, ceci quel que soit le niveau de la tension de la sortie "s".This inverter mounting I maintains the grid of T1 at level 0 as long as the start switch 3 is open, regardless of the voltage level of the exits".

Quand l'interrupteur de démarrage 3 est fermé, la sortie dudit montage inverseur I passe à l'état bas, de sorte que le transistor T2 est alors bloqué. La grille du transistor T1 est alors commandée par la tension sur la sortie 〈〈 s 〉〉 de l'unité 2.When the start switch 3 is closed, the output of said inverter circuit I goes low, from so that the transistor T2 is then blocked. The grid of transistor T1 is then controlled by the voltage on the output 〈〈 s 〉〉 from unit 2.

Par ailleurs, on notera que l'invention s'applique également aux cas où l'unité de gestion 2 n'est pas commandée par l'interrupteur de démarrage, mais par des signaux de commande que lui transmet une autre unité de gestion qui gère par exemple la sécurité antivol et le contrôle moteur.Furthermore, it will be noted that the invention applies also in cases where management unit 2 is not controlled by the start switch, but by control signals that another unit of management which manages for example anti-theft security and engine control.

Une variante en ce sens a été illustrée sur la figure 4, sur laquelle on a représenté un moteur M de démarreur, ainsi qu'un dispositif de commande qui comporte, de la même façon que ceux des figures précédentes, un contacteur 1 qui comprend un contact de puissance K et un bobinage B, un interrupteur T1 qui commande l'alimentation du bobinage B et une unité de gestion 2 qui commande l'interrupteur T1.A variant in this sense has been illustrated on the FIG. 4, in which a motor M of starter, as well as a control device which behaves, in the same way as those of the figures previous, a contactor 1 which includes a contact power K and a winding B, a switch T1 which controls the supply of winding B and a management 2 which controls the switch T1.

Ladite unité de gestion 2 est elle-même commandée par une deuxième unité de gestion 5, qui lui transmet l'ordre de démarrage sous la forme d'un signal codé.Said management unit 2 is itself controlled by a second management unit 5, which transmits to it the start order in the form of a coded signal.

Il est à cet effet prévu en aval de l'unité 2 des moyens de décodage 6 qui envoient sur une entrée 〈〈 e 〉〉 de l'unité 2 une tension qui est au niveau bas tant que le signal correspondant à l'ordre de démarrage n'est pas reçu et qui est, sinon, à un niveau haut. Ces moyens de décodage 6 sont de préférence suffisamment évolués pour permettre le cas échéant un diagnostique d'erreur sur les signaux transmis par l'unité 5.It is for this purpose provided downstream of unit 2 of the decoding means 6 which send to an input 〈〈 e 〉〉 of unit 2 a voltage which is low as long as the signal corresponding to the start order is not received and which is, otherwise, at a high level. These means of decoding 6 are preferably sufficiently advanced to if necessary allow an error diagnosis on the signals transmitted by the unit 5.

Le dispositif de commande comporte également des moyens 4 qui n'autorisent la polarisation positive de la grille du transistor T1 que si l'ordre de démarrage est effectivement envoyé par l'unité 5, c'est à dire si la tension sur l'entrée 〈〈 e 〉〉 est à son niveau haut.The control device also includes means 4 which do not allow the positive polarization of the gate of transistor T1 only if the start order is actually sent by unit 5, i.e. if the voltage on the input 〈〈 e 〉〉 is at its high level.

Dans l'exemple illustré sur cette figure 4, ces moyens sont du type de ceux décrits en référence à la figure 3. Ils comportent un montage inverseur I recevant sur son entrée la tension injectée sur l'entrée 〈〈 e 〉〉 par le décodeur 6. La tension de sortie de ce montage inverseur I commande la base d'un transistor bipolaire T2 de type npn, dont l'émetteur est relié à la masse et dont le collecteur est relié à la grille du transistor T1.In the example illustrated in this figure 4, these means are of the type described with reference to the figure 3. They include an inverter mounting I receiving on its input the voltage injected on the input 〈〈 e 〉〉 by the decoder 6. The output voltage of this circuit inverter I controls the base of a bipolar transistor T2 npn type, whose transmitter is connected to ground and whose the collector is connected to the gate of transistor T1.

L'état de la sortie du décodeur est relié à un inverseur "I" comme décrit en variante 1.The status of the decoder output is linked to a inverter "I" as described in variant 1.

Claims (10)

Dispositif pour la commande d'un démarreur de véhicule automobile comportant une unité de gestion (2) qui est en permanence sous tension et dont une entrée est reliée à un organe de commande (3, 5) de démarrage, ladite unité de gestion (2) commandant l'alimentation du moteur électrique du démarreur en fonction notamment du signal qu'elle reçoit sur ladite entrée, caractérisé en ce qu'il comporte en outre des moyens complémentaires (4) qui empêchent la commande de l'alimentation du moteur électrique par ladite unité de gestion (2) si le signal reçu par ladite unité sur son entrée reliée à l'organe de commande (3, 5) ne correspond pas de façon effective à un signal de commande de démarrage.Device for controlling a starter motor vehicle comprising a management unit (2) which is permanently energized and whose input is connected to a starting control member (3, 5), said management unit (2) controlling the supply of the electric starter motor depending in particular on the signal it receives on said input, characterized in which it also includes additional means (4) which prevent control of the motor supply electric by said management unit (2) if the signal received by said unit on its input connected to the organ of command (3, 5) does not actually correspond to a start command signal. Dispositif selon la revendication 1, caractérisé en ce que l'unité de gestion (2) reçoit sur son entrée qui est reliée à l'organe de commande (3, 5) une tension qui selon que le démarrage est commandé ou non par ledit organe est à un niveau haut ou à un niveau bas et en ce que les moyens complémentaires (4) comportent des moyens qui n'autorisent la commande de l'alimentation du moteur électrique par ladite unité de gestion (2) que si la tension sur ladite entrée est à son niveau qui correspond à la commande du démarrage par l'organe de commande (3, 5).Device according to claim 1, characterized in that the management unit (2) receives on its input which is connected to the control member (3, 5) a voltage which depending on whether the start is controlled or not by said organ is at a high level or at a low level and in that that the complementary means (4) include means which do not allow control of the motor supply electric by said management unit (2) only if the voltage on said input is at its level which corresponds when starting control by the control member (3, 5). Dispositif selon la revendication 2, caractérisé en ce que l'unité de gestion (2) génère une tension de sortie dont le niveau commande un interrupteur (T1) qui lui-même commande l'alimentation du moteur électrique (M) du démarreur, les moyens complémentaires (4) maintenant la tension de commande dudit interrupteur à un niveau empêchant l'alimentation du moteur électrique lorsque la tension sur l'entrée de l'unité de gestion (2) est à un niveau qui correspond à l'absence de commande de démarrage par l'organe de commande (3, 5). Device according to claim 2, characterized in that the management unit (2) generates a voltage of output whose level controls a switch (T1) which itself controls the power supply to the electric motor (M) of the starter, the additional means (4) now the control voltage of said switch at a level preventing power to the electric motor when the voltage on the input of the management unit (2) is at one level which corresponds to the absence of command of starting by the control member (3, 5). Dispositif selon la revendication 3, caractérisé en ce que les moyens complémentaires (4) comportent des moyens de type à porte(s) logique(s) qui reçoivent en entrée la tension en entrée de l'unité de gestion (2) et la tension de commande en sortie de celle-ci.Device according to claim 3, characterized in that the complementary means (4) include logic gate type means that receive in input the input voltage of the management unit (2) and the control voltage at the output thereof. Dispositif selon la revendication 4, caractérisé en ce que la tension en entrée de l'unité de gestion (2) est à un niveau haut lors d'une commande de démarrage par l'organe de commande (3, 5), l'interrupteur qui commande l'alimentation du moteur électrique étant fermé lorsque sa tension de commande est à un niveau haut, les moyens complémentaires (4) comportant une porte logique NON ET qui reçoit en entrée la tension en entrée de l'unité de gestion (2) et la tension de commande en sortie de celle-ci, la tension en sortie de ladite porte commandant la base d'un transistor qui est monté entre la masse et un point qui est également relié à la sortie de l'unité de gestion (2) et dont la tension commande l'interrupteur.Device according to claim 4, characterized in that the input voltage of the management unit (2) is at a high level during a start command by the control member (3, 5), the switch which controls the electric motor supply being closed when its control voltage is at a high level, the means complementary (4) comprising a NAND logic gate which receives as input the input voltage of the unit management (2) and the control voltage at the output thereof, the voltage at the output of said gate controlling the base of a transistor which is mounted between ground and a point which is also connected to the output of the unit management (2) and whose voltage controls the switch. Dispositif selon la revendication 5, caractérisé en ce que des moyens résistifs (R) sont interposés entre ledit point de commande de l'interrupteur et la sortie de l'unité de gestion.Device according to claim 5, characterized in that resistive means (R) are interposed between said switch control point and the output of the management unit. Dispositif selon l'une des revendications 1 à 3, caractérisé en ce que la tension en entrée de l'unité de gestion (2) est à un niveau haut lors d'une commande de démarrage par l'organe de commande (3, 5), l'interrupteur qui commande l'alimentation du moteur électrique étant fermé lorsque sa tension de commande est à un niveau haut, les moyens complémentaires (4) comportant un montage inverseur (I) qui reçoit en entrée la tension en entrée de l'unité de gestion (2) et dont la tension de sortie commande la base d'un transistor (T2) qui est monté entre la masse et un point qui est également relié à la sortie de l'unité de gestion (2) et dont la tension commande l'interrupteur (T1). Device according to one of claims 1 to 3, characterized in that the input voltage of the unit of management (2) is at a high level when ordering starting by the control member (3, 5), the switch which controls the supply of the electric motor being closed when its control voltage is at a level top, the complementary means (4) comprising a inverter assembly (I) which receives the input voltage input of the management unit (2) and whose voltage output controls the base of a transistor (T2) which is mounted between ground and a point which is also connected at the output of the management unit (2) and whose voltage controls the switch (T1). Dispositif selon l'une des revendications précédentes, caractérisé en ce que l'organe de commande (3, 5) est un interrupteur de démarrage (3).Device according to one of the claims previous, characterized in that the control member (3, 5) is a start switch (3). Dispositif selon l'une des revendications précédentes, caractérisé en ce que l'organe de commande (3, 5) est constitué par une deuxième unité de gestion (5)qui transmet à la première unité de gestion (2) un ordre de démarrage sous la forme d'un signal codé et en ce que ledit dispositif comporte des moyens de décodage (6) qui sont interposés entre l'entrée de la première unité de gestion (5)et la deuxième unité de gestion (2)et qui transforment ce signal codé en un signal de tension.Device according to one of the claims previous, characterized in that the control member (3, 5) consists of a second management unit (5) which transmits to the first management unit (2) a start order in the form of a coded signal and in that said device includes decoding means (6) which are interposed between the entry of the first management unit (5) and the second management unit (2) and which transform this coded signal into a voltage signal. Démarreur de véhicule automobile, caractérisé en ce qu'il comporte un dispositif de commande selon l'une des revendications précédentes.Motor vehicle starter, characterized in what it includes a control device according to one of the preceding claims.
EP19980403005 1997-12-03 1998-12-01 Control device for an automotive vehicle starter Expired - Lifetime EP0921306B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9715223A FR2771781B1 (en) 1997-12-03 1997-12-03 DEVICE FOR CONTROLLING A STARTER OF A MOTOR VEHICLE
FR9715223 1997-12-03

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EP0921306A2 true EP0921306A2 (en) 1999-06-09
EP0921306A3 EP0921306A3 (en) 1999-06-16
EP0921306B1 EP0921306B1 (en) 2003-02-05

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EP19980403005 Expired - Lifetime EP0921306B1 (en) 1997-12-03 1998-12-01 Control device for an automotive vehicle starter

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DE (1) DE69811190T2 (en)
ES (1) ES2192756T3 (en)
FR (1) FR2771781B1 (en)

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US6271396B1 (en) 1998-07-16 2001-08-07 Basf Aktiengesellschaft Use of organosulfur compounds for effecting a bathocromic shift in the UV/vis absorption bands of carotenoids

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DE102006001578B4 (en) * 2005-02-05 2017-11-23 Schaeffler Technologies AG & Co. KG Method for controlling a drive train of a vehicle in an emergency driving situation
US7343241B2 (en) * 2006-05-11 2008-03-11 Gm Global Technology Operations, Inc. Security software layer protection for engine start

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DE4344355A1 (en) * 1993-01-16 1994-07-21 Volkswagen Ag Starting IC engine in car
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Cited By (5)

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Publication number Priority date Publication date Assignee Title
US6271396B1 (en) 1998-07-16 2001-08-07 Basf Aktiengesellschaft Use of organosulfur compounds for effecting a bathocromic shift in the UV/vis absorption bands of carotenoids
FR2802981A1 (en) * 1999-12-28 2001-06-29 Valeo Equip Electr Moteur Identifying motor vehicle starting circuit microcontroller card by including before commencement of normal cycle pulses which are easily identified but do not cause any contactor operation
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KR100714538B1 (en) * 1999-12-28 2007-05-07 발레오 에뀝망 엘렉뜨리끄 모떼르 Method and device for powering a motor vehicle electric starting switch with determinable behaviour

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DE69811190D1 (en) 2003-03-13
EP0921306A3 (en) 1999-06-16
EP0921306B1 (en) 2003-02-05
FR2771781A1 (en) 1999-06-04
DE69811190T2 (en) 2003-10-23
FR2771781B1 (en) 2000-02-18
ES2192756T3 (en) 2003-10-16

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