EP0864746A1 - Electronically controlled vehicle starter motor - Google Patents

Electronically controlled vehicle starter motor Download PDF

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Publication number
EP0864746A1
EP0864746A1 EP98400555A EP98400555A EP0864746A1 EP 0864746 A1 EP0864746 A1 EP 0864746A1 EP 98400555 A EP98400555 A EP 98400555A EP 98400555 A EP98400555 A EP 98400555A EP 0864746 A1 EP0864746 A1 EP 0864746A1
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EP
European Patent Office
Prior art keywords
starter
voltage
circuit according
terminal
intended
Prior art date
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Granted
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EP98400555A
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German (de)
French (fr)
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EP0864746B1 (en
Inventor
Frédéric Le Cam
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Valeo Equipements Electriques Moteur SAS
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Valeo Equipements Electriques Moteur SAS
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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
    • F02N11/10—Safety devices
    • 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

Definitions

  • the present invention relates to the control of electronically controlled motor vehicle starters.
  • a starter D which includes an electric motor M mounted between a terminal B + power supply to battery voltage and ground.
  • Electric motor supply is controlled by a contactor 1 mounted between said terminal B + and the motor M.
  • This contactor 1 is a relay which includes a plunger core (not shown) actuated by a winding call 2 and a holding coil 3 for pushing and maintain a power contact in the closed position 1a.
  • the call winding 2 is mounted between the end of the motor M which is opposite to the ground and the winding 3, said coil 3 being connected to ground by its end opposite.
  • the coils 2 and 3 are connected to the source of a transistor 4, for example from field effect type, the drain of which is connected to the terminal B +, via the key switch contact 6.
  • This transistor 4 is controlled in all or nothing or progressively, by a microprocessor 5 - also connected to the power supply terminal B + - which injects a control voltage on the gate of transistor 4.
  • Ce microprocessor 5 is for example, as illustrated on Figure 1, integrated with relay 1 and transistor 4 to inside the starter housing. He can also be placed outside the starter, in any location of the vehicle.
  • such a starter has the advantage of being autonomous, that is to say that it does not have no other electrical connection than those used by non-electronic conventional starters, namely a control cable allowing connection with the key contact 6, a cable for the power supply of the motor M, a return to ground by the carcass of the starter.
  • the microprocessor 5 manages several functions. In particular, it controls the automatic starter stop when the vehicle's engine is sufficient launched. Also, it implements protections various; for example, it cuts power to the starter when overloads appear on the motor M or when said motor M is in overspeed; also it cuts the power to the starter when supply overvoltages are generated.
  • a first solution that could be considered would consist in providing a sub-circuit allowing, during measurement operations, supplying the coil (s) contactor in parallel with the supply by the transistor 4.
  • the solution according to the invention consists of a device for controlling a starter switch motor vehicle with a management unit which manages the starter power supply and which includes means for detecting operating anomalies and cut the starter power when such anomaly is detected, characterized in that the unit of management further comprises means for detecting on a input intended to be connected to the contact switch of the vehicle a signal which commands the inhibition of protective functions.
  • This device is used with a circuit intended for be mounted between the management unit and the switch of the vehicle and characterized in that it comprises means to generate a signal which controls the inhibition of protection functions of the management unit.
  • FIG 2 there is shown a circuit 7 which is intended to be mounted between the contact switch 6 and an analog / digital converter input of the microprocessor 5 when you want to be able to perform a control on the starter.
  • This circuit 7 allows, when closing the contact switch 6, to generate a signal intended to be recognized by microprocessor 5, this being programmed to control when it detects said signal, inhibition of the different functions of starter protection.
  • This inhibit control signal can be all kinds for example a voltage signal or of intensity recognizable by its amplitude and / or its duration and / or its frequency and / or its number of pulses and / or by special binary coding, etc.
  • the signal generated consists of a voltage calibrated at a level U 0 , which, when the contact switch 6 is closed, is sent for a duration T 0 at the input of the microprocessor 5.
  • U 0 is chosen to be greater than that of the minimum operating voltage of the microprocessor 5 and less than the value of the lowest voltage which may appear on the vehicle before the starter is started.
  • U 0 is equal to 6 +/- 0.5 volts.
  • the duration T 0 during which the input voltage of the microprocessor is maintained at level U 0 is chosen to be large enough to prevent parasitic variations of said voltage from being liable to be confused by the microprocessor 5 with the inhibition control signal .
  • T 0 can for example take the value of 20 milliseconds or a higher value.
  • the circuit 7 includes a relay 8 whose switch 9 is mounted between on the one hand a terminal F intended to be connected to the contact switch 6 of a starter and other share a terminal E intended to be connected to an input of the microprocessor 5.
  • terminal E is for example intended to be connected to the starter terminal D which is normally connected to switch 6.
  • the coil of relay 8 - referenced by 10 - is mounted between ground and terminal F, to which it is connected by a resistor R 1 .
  • Circuit 7 also includes a Zener diode 11 which is mounted between ground and terminal E, being mass passing towards said terminal.
  • a resistor R 2 is mounted in parallel with the switch 8 between the terminals E and F.
  • the circuit 7 also includes a capacitor 12 mounted in parallel between the two ends of the winding 8.
  • the operator mounts circuit 7 between the contact switch 6 and the starter terminal D which is normally connected to said switch.
  • the Zener diode 11 imposes a voltage U 0 at the input of the microprocessor 5, while the relay 8 closes.
  • the capacitor 12 allows, if the mechanical inertia of the relay 8 is not sufficient for the switch 9 to close after T 0 , to increase the closing time of said switch.
  • the voltage received at the input of the microprocessor 5 when the switch is closed contact 6 is of the type illustrated in FIG. 3.
  • the microprocessor 5 implements, each time that it detects the closing of the contact switch 6, a comparison processing on the value of the voltage that it receives as an input to verify whether this voltage takes or not the value U 0 during the duration T 0 (step A in FIG. 4).
  • the microprocessor 5 activates the control process of transistor 4, as well as the different protection functions (step B).
  • the microprocessor 5 controls the inhibition of the protection functions and the closing of the transistor 4 (step C).
  • the solution which has just been described which consists to use a muting signal generation circuit protective functions, has the advantage of allow the starter to be powered off electronic protection functions without requiring additional connectors.
  • the interface circuit which has just been described can also be integrated into a test device.
  • a testing device could be used indifferently to test the electronic starters and conventional starters.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Electric Motors In General (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Motor And Converter Starters (AREA)

Abstract

The starter contactor control has a microprocessor (5) managing supply to the starter (D) and incorporating detection of anomalies in operation of the starter motor to allow disconnection of the supply to protect the starter motor against damage. The microprocessor circuit has in addition an input (E) connected to the ignition switch (6) of the signal, which can take a position that connects a circuit (8,11,12) that generates the protection inhibit signal to the microprocessor. The inhibit signal comprises a voltage that is applied for a set period of time greater than 20 ms. The voltage is above the voltage needed to operate the microprocessor circuit but less than that needed to operate the starter.

Description

La présente invention est relative au contrôle de démarreurs à commande électronique de véhicule automobile.The present invention relates to the control of electronically controlled motor vehicle starters.

On a illustré sur la figure 1 un démarreur D, qui comporte un moteur électrique M monté entre une borne B+ d'alimentation à la tension de la batterie et la masse.Illustrated in Figure 1 a starter D, which includes an electric motor M mounted between a terminal B + power supply to battery voltage and ground.

L'alimentation du moteur électrique est commandée par un contacteur 1 monté entre ladite borne B+ et le moteur M.Electric motor supply is controlled by a contactor 1 mounted between said terminal B + and the motor M.

Ce contacteur 1 est un relais qui comporte un noyau plongeur (non représenté) actionné par un bobinage d'appel 2 et un bobinage de maintien 3 pour pousser et maintenir en position de fermeture un contact de puissance 1a.This contactor 1 is a relay which includes a plunger core (not shown) actuated by a winding call 2 and a holding coil 3 for pushing and maintain a power contact in the closed position 1a.

Le bobinage d'appel 2 est monté entre l'extrémité du moteur M qui est opposée à la masse et le bobinage 3, ledit bobinage 3 étant relié à la masse par son extrémité opposée.The call winding 2 is mounted between the end of the motor M which is opposite to the ground and the winding 3, said coil 3 being connected to ground by its end opposite.

A leur extrémité commune, les bobinages 2 et 3 sont reliés à la source d'un transistor 4, par exemple de type à effet de champ, dont le drain est relié à la borne B+, par l'intermédiaire de l'interrupteur de clé de contact 6.At their common end, the coils 2 and 3 are connected to the source of a transistor 4, for example from field effect type, the drain of which is connected to the terminal B +, via the key switch contact 6.

Ce transistor 4 est commandé en tout ou rien ou de façon progressive, par un microprocesseur 5 - également relié à la borne d'alimentation B+ - qui injecte une tension de commande sur la grille du transistor 4. Ce microprocesseur 5 est par exemple, ainsi qu'illustré sur la figure 1, intégré avec le relais 1 et le transistor 4 à l'intérieur de la carcasse du démarreur. Il peut également être disposé hors du démarreur, en un endroit quelconque du véhicule.This transistor 4 is controlled in all or nothing or progressively, by a microprocessor 5 - also connected to the power supply terminal B + - which injects a control voltage on the gate of transistor 4. Ce microprocessor 5 is for example, as illustrated on Figure 1, integrated with relay 1 and transistor 4 to inside the starter housing. He can also be placed outside the starter, in any location of the vehicle.

Comme on l'aura compris, un tel démarreur présente l'avantage d'être autonome, c'est-à-dire qu'il ne dispose d'aucune autre liaison électrique que celles utilisées par les démarreurs conventionnels non électronisés, à savoir un câble de commande permettant la liaison avec la clé de contact 6, un câble pour l'alimentation en puissance du moteur M, un retour à la masse par la carcasse du démarreur.As will be understood, such a starter has the advantage of being autonomous, that is to say that it does not have no other electrical connection than those used by non-electronic conventional starters, namely a control cable allowing connection with the key contact 6, a cable for the power supply of the motor M, a return to ground by the carcass of the starter.

Le microprocesseur 5 gère plusieurs fonctions. Notamment, il commande l'arrêt automatique du démarreur lorsque le moteur thermique du véhicule est suffisamment lancé. Egalement, il met en oeuvre des protections diverses ; par exemple, il coupe l'alimentation du démarreur lorsque des surcharges apparaissent sur le moteur M ou encore lorsque ledit moteur M est en survitesse ; également, il coupe l'alimentation du démarreur lorsque des surtensions d'alimentation sont générées.The microprocessor 5 manages several functions. In particular, it controls the automatic starter stop when the vehicle's engine is sufficient launched. Also, it implements protections various; for example, it cuts power to the starter when overloads appear on the motor M or when said motor M is in overspeed; also it cuts the power to the starter when supply overvoltages are generated.

Or, il s'avère que ces différentes protections empêchent de réaliser certains contrôles sur le démarreur.However, it turns out that these different protections prevent certain checks on the starter.

Par exemple, si l'on veut faire une mesure de caractéristique de vitesse du démarreur pour un couple résistant donné, il est nécessaire d'alimenter le démarreur en régime stabilisé pendant quelques secondes, ce qui se traduit par des variations de tension ou d'intensité. Si précisément le microprocesseur est programmé pour détecter les anomalies de fonctionnement en observant les variations de tension ou d'intensité, ceci provoque un arrêt du démarreur en quelques dixièmes de secondes. La mesure est alors impossible.For example, if you want to measure starter speed characteristic for torque given resistance, it is necessary to supply the starter in steady state for a few seconds, which results in voltage variations or intensity. If precisely the microprocessor is programmed to detect operating anomalies in observing variations in voltage or intensity, this causes the starter to stop within a few tenths of seconds. The measurement is then impossible.

Une première solution qui pourrait être envisagée consisterait à prévoir un sous-circuit permettant, lors des opérations de mesure, d'alimenter la ou les bobines de contacteur en parallèle à l'alimentation par le transistor 4.A first solution that could be considered would consist in providing a sub-circuit allowing, during measurement operations, supplying the coil (s) contactor in parallel with the supply by the transistor 4.

Mais cette solution nécessiterait, outre un câblage complémentaire, une borne supplémentaire sur le démarreur. Il en résulterait un coût et un encombrement supplémentaires importants. But this solution would require, in addition to a additional wiring, an additional terminal on the starter. This would result in cost and bulk additional important.

La solution selon l'invention consiste en un dispositif pour la commande d'un contacteur de démarreur de véhicule automobile comportant une unité de gestion qui gère l'alimentation du démarreur et qui comporte des moyens pour détecter des anomalies de fonctionnement et couper l'alimentation du démarreur lorsqu'une telle anomalie est détectée, caractérisé en ce que l'unité de gestion comporte en outre des moyens pour détecter sur une entrée destinée à être reliée à l'interrupteur de contact du véhicule un signal qui commande l'inhibition des fonctions de protection.The solution according to the invention consists of a device for controlling a starter switch motor vehicle with a management unit which manages the starter power supply and which includes means for detecting operating anomalies and cut the starter power when such anomaly is detected, characterized in that the unit of management further comprises means for detecting on a input intended to be connected to the contact switch of the vehicle a signal which commands the inhibition of protective functions.

Ce dispositif s'utilise avec un circuit destiné à être monté entre l'unité de gestion et l'interrupteur du véhicule et caractérisé en ce qu'il comporte des moyens pour générer un signal qui commande l'inhibition des fonctions de protection de l'unité de gestion.This device is used with a circuit intended for be mounted between the management unit and the switch of the vehicle and characterized in that it comprises means to generate a signal which controls the inhibition of protection functions of the management unit.

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

  • la figure 1, déjà analysée, représente schématiquement un démarreur comportant un dispositif de commande électronisé ;
  • la figure 2 est un schéma analogue à celui de la figure 1 sur lequel on a représenté un démarreur du type de celui de la figure 1 et un circuit pour la génération d'un signal de commande d'inhibition des fonctions de protection du démarreur monté entre l'unité de gestion du démarreur et l'interrupteur de contact du véhicule ;
  • la figure 3 est un graphe sur lequel on a représenté un exemple de signal de commande d'inhibition possible ;
  • la figure 4 est un organigramme qui présente différentes étapes du traitement mis en oeuvre par le microprocesseur du démarreur de la figure 2.
Other characteristics and advantages of the invention will emerge from the description which follows. This description is purely illustrative and not limiting. It must be read in conjunction with the appended drawings in which:
  • FIG. 1, already analyzed, schematically represents a starter comprising an electronic control device;
  • Figure 2 is a diagram similar to that of Figure 1 in which there is shown a starter of the type of that of Figure 1 and a circuit for the generation of a control signal inhibition of the protection functions of the starter mounted between the starter management unit and the vehicle contact switch;
  • FIG. 3 is a graph on which an example of a possible inhibition control signal has been shown;
  • FIG. 4 is a flow diagram which presents different stages of the processing implemented by the microprocessor of the starter of FIG. 2.

Sur la figure 2, on a représenté un circuit 7 qui est destiné à être monté entre l'interrupteur de contact 6 et une entrée à convertisseur analogique/numérique du microprocesseur 5 lorsque l'on veut pouvoir effectuer un contrôle sur le démarreur.In Figure 2, there is shown a circuit 7 which is intended to be mounted between the contact switch 6 and an analog / digital converter input of the microprocessor 5 when you want to be able to perform a control on the starter.

Ce circuit 7 permet, à la fermeture de l'interrupteur de contact 6, de générer un signal destiné à être reconnu par le microprocesseur 5, celui-ci étant programmé de façon à commander, lorsqu'il détecte ledit signal, l'inhibition des différentes fonctions de protection du démarreur.This circuit 7 allows, when closing the contact switch 6, to generate a signal intended to be recognized by microprocessor 5, this being programmed to control when it detects said signal, inhibition of the different functions of starter protection.

Ce signal de commande d'inhibition peut être de toutes sortes, par exemple un signal de tension ou d'intensité reconnaissable à son amplitude et/ou sa durée et/ou sa fréquence et/ou son nombre d'impulsions et/ou par un codage binaire particulier, etc.This inhibit control signal can be all kinds for example a voltage signal or of intensity recognizable by its amplitude and / or its duration and / or its frequency and / or its number of pulses and / or by special binary coding, etc.

Dans l'exemple du circuit illustré sur la figure 2, le signal généré consiste en une tension calibrée à un niveau U0, qui, à la fermeture de l'interrupteur de contact 6, est envoyée pendant une durée T0 en entrée du microprocesseur 5.In the example of the circuit illustrated in FIG. 2, the signal generated consists of a voltage calibrated at a level U 0 , which, when the contact switch 6 is closed, is sent for a duration T 0 at the input of the microprocessor 5.

La valeur de U0 est choisie supérieure à celle de la tension minimale de fonctionnement du microprocesseur 5 et inférieure à la valeur de la tension la plus faible pouvant apparaítre sur le véhicule avant la mise en marche du démarreur.The value of U 0 is chosen to be greater than that of the minimum operating voltage of the microprocessor 5 and less than the value of the lowest voltage which may appear on the vehicle before the starter is started.

Par exemple, U0 est égale à 6 +/- 0,5 volts.For example, U 0 is equal to 6 +/- 0.5 volts.

La durée T0 pendant laquelle la tension en entrée du microprocesseur est maintenue au niveau U0 est choisie suffisamment grande pour éviter que des variations parasites de ladite tension ne soient susceptibles d'être confondues par le microprocesseur 5 avec le signal de commande d'inhibition. The duration T 0 during which the input voltage of the microprocessor is maintained at level U 0 is chosen to be large enough to prevent parasitic variations of said voltage from being liable to be confused by the microprocessor 5 with the inhibition control signal .

T0 peut par exemple prendre la valeur de 20 millisecondes ou une valeur supérieure.T 0 can for example take the value of 20 milliseconds or a higher value.

Dans l'exemple illustré sur la figure 2, le circuit 7 comporte un relais 8 dont l'interrupteur 9 est monté entre d'une part une borne F destinée à être reliée à l'interrupteur de contact 6 d'un démarreur et d'autre part une borne E destinée à être reliée à une entrée du microprocesseur 5.In the example illustrated in Figure 2, the circuit 7 includes a relay 8 whose switch 9 is mounted between on the one hand a terminal F intended to be connected to the contact switch 6 of a starter and other share a terminal E intended to be connected to an input of the microprocessor 5.

Plus précisément, la borne E est par exemple destinée à être reliée à la borne du démarreur D qui est normalement reliée à l'interrupteur 6.More precisely, the terminal E is for example intended to be connected to the starter terminal D which is normally connected to switch 6.

Le bobinage du relais 8 - référencé par 10 - est montée entre la masse et la borne F, à laquelle il est relié par une résistance R1.The coil of relay 8 - referenced by 10 - is mounted between ground and terminal F, to which it is connected by a resistor R 1 .

Le circuit 7 comporte également une diode Zéner 11 qui est montée entre la masse et la borne E, en étant passante de la masse vers ladite borne.Circuit 7 also includes a Zener diode 11 which is mounted between ground and terminal E, being mass passing towards said terminal.

Une résistance R2 est montée en parallèle à l'interrupteur 8 entre les bornes E et F.A resistor R 2 is mounted in parallel with the switch 8 between the terminals E and F.

Le circuit 7 comporte également un condensateur 12 monté en parallèle entre les deux extrémités du bobinage 8.The circuit 7 also includes a capacitor 12 mounted in parallel between the two ends of the winding 8.

Lorsqu'il veut réaliser un contrôle sur le démarreur D, l'opérateur monte le circuit 7 entre l'interrupteur de contact 6 et la borne du démarreur D qui est normalement reliée audit interrupteur.When he wants to carry out a check on the starter D, the operator mounts circuit 7 between the contact switch 6 and the starter terminal D which is normally connected to said switch.

A la fermeture de l'interrupteur de contact 6, la diode Zéner 11 impose en entrée du microprocesseur 5 une tension U0, le temps que le relais 8 se ferme. Le condensateur 12 permet, si l'inertie mécanique du relais 8 n'est pas suffisante pour que l'interrupteur 9 se ferme au bout de T0, d'augmenter le temps de fermeture dudit interrupteur.When the contact switch 6 closes, the Zener diode 11 imposes a voltage U 0 at the input of the microprocessor 5, while the relay 8 closes. The capacitor 12 allows, if the mechanical inertia of the relay 8 is not sufficient for the switch 9 to close after T 0 , to increase the closing time of said switch.

Puis, lorsque l'interrupteur 9 est fermé, la borne E est alimentée à la tension B+.Then, when the switch 9 is closed, the terminal E is supplied at voltage B +.

Par conséquent, la tension reçue en entrée du microprocesseur 5 à la fermeture de l'interrupteur de contact 6 est du type de celle illustrée sur la figure 3.Consequently, the voltage received at the input of the microprocessor 5 when the switch is closed contact 6 is of the type illustrated in FIG. 3.

Pour détecter un tel signal, le microprocesseur 5 met en oeuvre, à chaque fois qu'il détecte la fermeture de l'interrupteur de contact 6, un traitement de comparaison sur la valeur de la tension qu'il reçoit en entrée pour vérifier si cette tension prend ou non la valeur U0 pendant la durée T0 (étape A sur la figure 4).To detect such a signal, the microprocessor 5 implements, each time that it detects the closing of the contact switch 6, a comparison processing on the value of the voltage that it receives as an input to verify whether this voltage takes or not the value U 0 during the duration T 0 (step A in FIG. 4).

Si ce n'est pas le cas, le microprocesseur 5 active le processus de commande du transistor 4, ainsi que les différentes fonctions de protection (étape B).If not, the microprocessor 5 activates the control process of transistor 4, as well as the different protection functions (step B).

Par contre si la tension reçue en entrée par le microprocesseur 5 est effectivement au niveau U0 pendant la durée T0, le microprocesseur 5 commande l'inhibition des fonctions de protection et la fermeture du transistor 4 (étape C).On the other hand, if the voltage received at input by the microprocessor 5 is effectively at level U 0 during the duration T 0 , the microprocessor 5 controls the inhibition of the protection functions and the closing of the transistor 4 (step C).

La solution qui vient d'être décrite, qui consiste à utiliser un circuit de génération de signal d'inhibition des fonctions de protection, présente l'avantage de permettre de réaliser une alimentation du démarreur hors fonctions électroniques de protection sans nécessiter de connectique supplémentaire.The solution which has just been described, which consists to use a muting signal generation circuit protective functions, has the advantage of allow the starter to be powered off electronic protection functions without requiring additional connectors.

Le circuit d'interface qui vient d'être décrit peut en outre être intégré à un dispositif d'essai. On notera qu'un tel dispositif d'essai pourrait être utilisé indifféremment pour tester les démarreurs électronisés et les démarreurs conventionnels.The interface circuit which has just been described can also be integrated into a test device. We note that such a testing device could be used indifferently to test the electronic starters and conventional starters.

Claims (10)

Dispositif pour la commande d'un contacteur de démarreur de véhicule automobile comportant une unité de gestion (5) qui gère l'alimentation du démarreur (D) et qui comporte des moyens pour détecter des anomalies de fonctionnement et couper l'alimentation du démarreur lorsqu'une telle anomalie est détectée, caractérisé en ce que l'unité de gestion (5) comporte en outre des moyens pour détecter sur une entrée (E) destinée à être reliée à l'interrupteur de contact (6) du véhicule un signal qui commande l'inhibition des fonctions de protection.Device for controlling a contactor of motor vehicle starter comprising a unit for management (5) which manages the starter supply (D) and which includes means for detecting anomalies of operation and cut off the starter power supply when such an anomaly is detected, characterized in that that the management unit (5) further comprises means to detect on an input (E) intended to be connected to the vehicle contact switch (6) a signal which controls the inhibition of protective functions. Circuit (7) caractérisé en ce qu'il est destiné à être monté entre une unité de gestion (5) qui gère l'alimentation d'un démarreur de véhicule automobile et un interrupteur de contact (6) du véhicule et en ce qu'il comporte des moyens (8, 11, 12) pour générer un signal qui commande l'inhibition des fonctions de protection de l'unité de gestion.Circuit (7) characterized in that it is intended to be mounted between a management unit (5) which manages the power supply of a motor vehicle starter and a vehicle contact switch (6) and that includes means (8, 11, 12) for generating a signal which commands the inhibition of the protection functions of the management unit. Circuit selon la revendication 2, caractérisé en ce que lesdits moyens (8, 11, 12) génèrent pendant un temps prédéterminé, à la fermeture de l'interrupteur de contact (6), une tension calibrée à un niveau donné (U0).Circuit according to Claim 2, characterized in that the said means (8, 11, 12) generate for a predetermined time, when the contact switch (6) is closed, a voltage calibrated at a given level (U 0 ). Circuit selon la revendication 3, caractérisé en ce que cette tension (U0) est supérieure à la tension minimale de fonctionnement de l'unité de gestion et inférieure à la tension la plus faible pouvant apparaítre sur le véhicule avant la mise en marche du démarreur.Circuit according to Claim 3, characterized in that this voltage (U 0 ) is greater than the minimum operating voltage of the management unit and less than the lowest voltage which may appear on the vehicle before the starter is started. . Circuit selon la revendication 4, caractérisé en ce que cette tension (U0) est égale à 6 +/- 0,5 volts.Circuit according to claim 4, characterized in that this voltage (U 0 ) is equal to 6 +/- 0.5 volts. Circuit selon l'une des revendication 3 à 5, caractérisé en ce que le temps (T0) pendant lequel ladite tension est maintenue audit niveau calibré (U0) est de 20 millisecondes ou supérieur.Circuit according to one of claims 3 to 5, characterized in that the time (T 0 ) during which said voltage is maintained at said calibrated level (U 0 ) is 20 milliseconds or higher. Circuit selon l'une des revendication 3 à 6, caractérisé en ce qu'il comporte un relais (8) dont l'interrupteur (9) est monté entre d'une part une borne (F) destinée à être reliée à l'interrupteur de contact (6) d'un démarreur et d'autre part une borne (E) destinée à être reliée à une entrée de l'unité de gestion (5).Circuit according to one of claims 3 to 6, characterized in that it comprises a relay (8) of which the switch (9) is mounted between a terminal on the one hand (F) intended to be connected to the contact switch (6) a starter and on the other hand a terminal (E) intended for be connected to an input of the management unit (5). Circuit selon la revendication 7, caractérisé en ce que le bobinage (10) du relais (8) est monté entre la masse et la borne (F) destinée à être reliée à l'interrupteur de contact (6).Circuit according to claim 7, characterized in that the coil (10) of the relay (8) is mounted between earth and terminal (F) intended to be connected to the contact switch (6). Circuit selon l'une des revendications 7 et 8, caractérisé en ce qu'il comporte également une diode Zéner (11) qui est montée entre la masse et la borne (E) destinée à être reliée à une entrée de l'unité de gestion (5), en étant passante de la masse vers ladite borne (E).Circuit according to one of claims 7 and 8, characterized in that it also includes a Zener diode (11) which is mounted between earth and terminal (E) intended to be connected to an input of the management unit (5), by passing the earth towards said terminal (E). Circuit selon l'une des revendications 7 à 9, caractérisé en ce qu'il comporte également un condensateur (12) monté en parallèle entre les deux extrémités du bobinage du relais (8).Circuit according to one of Claims 7 to 9, characterized in that it also includes a capacitor (12) mounted in parallel between the two ends of the relay winding (8).
EP98400555A 1997-03-14 1998-03-10 Electronically controlled vehicle starter motor Expired - Lifetime EP0864746B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9703091 1997-03-14
FR9703091A FR2760909B1 (en) 1997-03-14 1997-03-14 CONTROL OF MOTOR VEHICLE ELECTRONICALLY CONTROLLED STARTERS

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EP0864746A1 true EP0864746A1 (en) 1998-09-16
EP0864746B1 EP0864746B1 (en) 2002-12-11

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EP98400555A Expired - Lifetime EP0864746B1 (en) 1997-03-14 1998-03-10 Electronically controlled vehicle starter motor

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US (1) US6078486A (en)
EP (1) EP0864746B1 (en)
DE (1) DE69809985T2 (en)
ES (1) ES2189105T3 (en)
FR (1) FR2760909B1 (en)

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FR2814503B1 (en) * 2000-09-28 2002-11-22 Valeo Equip Electr Moteur DEVICE FOR CONTROLLING A STARTER MOTOR, PARTICULARLY A MOTOR VEHICLE
JP3831191B2 (en) * 2000-10-13 2006-10-11 株式会社東海理化電機製作所 Vehicle engine starter and engine start method
DE102004029895B4 (en) * 2004-06-17 2014-03-13 Volkswagen Ag Device and method for controlling the starting process in a motor vehicle
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FI123903B (en) * 2012-10-24 2013-12-13 Waertsilae Finland Oy Liquid detection system of an internal combustion engine
SE542023C2 (en) * 2018-06-20 2020-02-11 Scania Cv Ab An arrangement and a method for protection against abnormal currents in a starter motor circuit

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Also Published As

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DE69809985D1 (en) 2003-01-23
DE69809985T2 (en) 2003-07-24
ES2189105T3 (en) 2003-07-01
FR2760909B1 (en) 1999-05-28
US6078486A (en) 2000-06-20
EP0864746B1 (en) 2002-12-11
FR2760909A1 (en) 1998-09-18

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