EP0921305B1 - Method and device for the alimentation control of a bobbin for a contactor of an automotive vehicle starter - Google Patents
Method and device for the alimentation control of a bobbin for a contactor of an automotive vehicle starter Download PDFInfo
- Publication number
- EP0921305B1 EP0921305B1 EP98403004A EP98403004A EP0921305B1 EP 0921305 B1 EP0921305 B1 EP 0921305B1 EP 98403004 A EP98403004 A EP 98403004A EP 98403004 A EP98403004 A EP 98403004A EP 0921305 B1 EP0921305 B1 EP 0921305B1
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- European Patent Office
- Prior art keywords
- voltage
- contactor
- winding
- supply
- starter
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- 239000007858 starting material Substances 0.000 title claims description 22
- 238000000034 method Methods 0.000 title claims description 7
- 238000004804 winding Methods 0.000 claims description 29
- 238000012423 maintenance Methods 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 3
- 230000005291 magnetic effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000013021 overheating Methods 0.000 description 2
- 238000006677 Appel reaction Methods 0.000 description 1
- 230000036772 blood pressure Effects 0.000 description 1
- 230000037213 diet Effects 0.000 description 1
- 235000005911 diet Nutrition 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Images
Classifications
-
- 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 specially adapted for starting of engines
-
- 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 specially adapted for starting of engines
- F02N11/0859—Circuits specially adapted for starting of engines specially adapted to the type of the starter motor or integrated into it
-
- 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 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
- F02N2200/00—Parameters used for control of starting apparatus
- F02N2200/06—Parameters used for control of starting apparatus said parameters being related to the power supply or driving circuits for the starter
- F02N2200/063—Battery voltage
Definitions
- the present invention relates to the control of the supply of the winding of a starter switch of motor vehicle.
- the starter's electric motor has been referenced there by M. It is mounted between earth and a + Bat terminal at the battery supply voltage.
- the power supply to motor M is controlled by a contactor C, which is a relay consisting of a contact power 3 controlled by a holding coil 1 and a call winding 2.
- the power contact 3 is for example interposed between motor M and voltage supply terminal + Bat.
- a common end of the call and hold 1 and 2 is connected to the power supply terminal + Bat, for example by a start switch 4, which is usually a key switch.
- the holding coil 1 is connected to ground, the call winding 2 being meanwhile connected to a point between contact 3 and motor M.
- the electronic control of the contactor allows use only one winding. This is illustrated by the assembly shown in Figure 2, in which the contact of power 3 of contactor C is controlled in motion by a supply winding B, which is mounted between the ground and the + Bat supply terminal at the voltage of the drums.
- the supply of this coil B is itself controlled by a management unit U, which activates a controlled switch S.
- This management unit U is usually a microprocessor, including an "e” input is for example connected to the terminal + Bat by via the start switch 4 and of which an output "s" controls the switch S, which is by example a MOSFET type transistor.
- the microprocessor U implements a number operations to ensure that the starter is in state of being activated, then the transistor S is controlled by pulse width signal (PWM or “Pulse Width Modulation” according to the terminology generally used), this command allowing to generate on the winding 3 a law of predetermined tension to ensure advancement to reduced speed of the moving core.
- PWM pulse width signal
- FIG. 3a A closing sequence of the start-up 4 is illustrated in FIG. 3a and we have shown in Figure 3b opposite an example of the evolution over time of the average supply current Ic circulating in the winding B during this sequence of closing.
- Figure 3c illustrates the sequence of closing the power contact 3 which corresponds to this diet.
- the PWM command from microprocessor U reduces the current in coil B to a minimum value "im" which ensures the maintenance of the magnetic circuit in closed state.
- An object of the invention is therefore to resolve this problem.
- the invention proposes an order power supply which minimizes so substantial winding overheating while ensuring a highly reliable closure.
- the invention proposes a method for the control of the winding supply of a contactor motor vehicle starter, according to which supplies said winding according to a call mode intended for close said contactor, then in a holding mode intended to keep said contactor closed, characterized in that we measure a voltage corresponding to the voltage the starter electric motor, that a fall corresponding to this voltage is detected at the closure of the contactor and in that the winding of the contactor in hold mode after a predetermined time after detection of the fall of voltage.
- the voltage corresponding to the voltage starter electric motor supply is measured in a sampled fashion and, to detect the voltage drop, the difference is compared to a threshold between two successive voltage measurements.
- the threshold corresponds to a voltage drop of the order of 1 Volt.
- the invention also relates to a device for control of the power supply of an electric motor vehicle starter having a contactor which is a relay which includes a power contact and a winding, as well as a management unit intended for successively control the supply of said winding according to a call mode intended to close said contactor, then according to a maintenance mode intended to maintain said closed contactor, said management unit measuring a voltage which, when starting is ordered, corresponds to the supply voltage to the motor electric starter and controlling the supply of electric motor depending in particular on this voltage, characterized in that said management unit comprises means for implementing the above method.
- the winding supply is controlled by a MOSFET type transistor, the gate is controlled by a pulse voltage at modulated width generated by the management unit.
- the management unit includes means for controlling the closing of the transistor, during winding supply in call mode.
- the invention also relates to a starter for motor vehicle, characterized in that it comprises a control device of the aforementioned type.
- the command sequence which is illustrated on the Figure 4 is implemented by the control means of single coil power supply B which are illustrated in Figure 2, i.e. by the controlled switch S and the management unit U, the latter being programmed to control said transistor S according to the command sequence which will now be described.
- step I in FIG. 4 the management unit U is put powered up and initializes (step II).
- the voltage + Bat that it receives on its input "e” is sampled and digitally converted.
- the numerical values thus obtained for the voltage + Bat are processed by the unit U, said unit U generating on its output “s” a PWM voltage for controlling the gate of transistor S which is notably a function of these voltage values + Bat.
- the unit U compares the difference (+ Bat i - + Bat i + 1 ) between two successive voltage measurements + Bat i and + Bat i + 1 (where i is a silent index associated with successive samplings), to a given dU threshold (test IV).
- transistor S is controlled so that the current Ic is greater than im (step III).
- Coil B can for example then be put under full tension, the management unit U then commanding the total closure of transistor S.
- unit U changes the duty cycle of its voltage PWM output, so as to control the transistor S for that the current in the coil B is maintained at its value im (step VI), after a time delay for a period T1 (step V).
- the value of im is chosen sufficient to keep the magnetic circuit closed.
- dU The value of dU is chosen to allow detect the voltage drop produced by closing the contact 3.
- the value of the threshold dU is for example chosen for correspond to 1 Volt.
- time delay T1 between detection of closing contact 3 and switching to mode maintenance prevents rebounds and ensure that the contactor is effectively closed, when you go into hold mode.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Motor And Converter Starters (AREA)
- Control Of Direct Current Motors (AREA)
- Relay Circuits (AREA)
- Control Of Electric Motors In General (AREA)
Description
La présente invention est relative à la commande de l'alimentation du bobinage d'un contacteur de démarreur de véhicule automobile.The present invention relates to the control of the supply of the winding of a starter switch of motor vehicle.
On a illustré sur la figure 1 un schéma classique de montage de démarreur.A classic diagram of starter assembly.
Le moteur électrique du démarreur y a été référencé par M. Il est monté entre la masse et une borne +Bat à la tension d'alimentation de la batterie.The starter's electric motor has been referenced there by M. It is mounted between earth and a + Bat terminal at the battery supply voltage.
L'alimentation du moteur M est commandée par un
contacteur C, qui est un relais constitué d'un contact de
puissance 3 commandé par un bobinage de maintien 1 et un
bobinage d'appel 2.The power supply to motor M is controlled by a
contactor C, which is a relay consisting of a
Le contact de puissance 3 est par exemple interposé
entre le moteur M et la borne d'alimentation à la tension
+Bat.The
Une extrémité commune des bobinages d'appel et de
maintien 1 et 2 est reliée à la borne d'alimentation
+Bat, par exemple par un interrupteur de démarrage 4, qui
est généralement un interrupteur de clé de contact.
A son extrémité opposée, le bobinage 1 de maintien est
relié à la masse, le bobinage 2 d'appel étant quant à lui
relié à un point entre le contact 3 et le moteur M.A common end of the call and
hold 1 and 2 is connected to the power supply terminal
+ Bat, for example by a start switch 4, which
is usually a key switch.
At its opposite end, the
Lors de la fermeture de l'interrupteur 4 de clé de
contact , les deux bobinages 1 et 2 sont alimentés
simultanément de façon à ce que leurs effets magnétiques
d'attraction du noyau mobile du contacteur
s'additionnent. Ces forces d'attraction sont suffisantes
pour vaincre les ressorts de rappel et les frottements
tant sur le contacteur que sur le lanceur. En fin de
course, la fermeture du contact de puissance 3 met les
deux extrémités du bobinage d'appel 2 sensiblement au
même potentiel, ce qui élimine tout passage de courant
dans celui-ci. Seul le bobinage 1 de maintien reste
alimenté. Mais, en raison du très faible entrefer qui
subsiste à ce moment-là, les forces développées par le
bobinage 1 de maintien restent supérieures aux forces de
rappels de différents ressorts ce qui permet de maintenir
le contacteur C fermé. Ce système économise le courant
consommé par le bobinage d'appel 2 et évite des
échauffements excessifs de celui-ci.When closing the key switch 4
contact, the two
La commande électronique du contacteur permet de
n'utiliser qu'un seul bobinage. C'est ce qu'illustre le
montage représenté sur la figure 2, sur lequel le contact
de puissance 3 du contacteur C est commandé en mouvement
par un bobinage d'alimentation B, qui est monté entre la
masse et la borne +Bat d'alimentation à la tension de la
batterie. L'alimentation de ce bobinage B est elle-même
commandée par une unité de gestion U, qui actionne un
interrupteur commandé S. Cette unité de gestion U est
généralement un microprocesseur, dont une entrée « e »
est par exemple reliée à la borne +Bat par
l'intermédiaire de l'interrupteur de démarrage 4 et dont
une sortie « s » commande l'interrupteur S, qui est par
exemple un transistor de type MOSFET.The electronic control of the contactor allows
use only one winding. This is illustrated by the
assembly shown in Figure 2, in which the contact
of
A la fermeture de l'interrupteur 4, le microprocesseur U met en oeuvre un certain nombre d'opérations permettant de s'assurer que le démarreur est en état d'être actionné, puis le transistor S est commandé par un signal à largeur à impulsions modulées (PWM ou « Pulse Width Modulation » selon la terminologie anglo-saxonne généralement utilisée), cette commande permettant de générer sur le bobinage 3 une loi de tension prédéterminée pour assurer un avancement à vitesse réduite du noyau mobile.When switch 4 closes, the microprocessor U implements a number operations to ensure that the starter is in state of being activated, then the transistor S is controlled by pulse width signal (PWM or “Pulse Width Modulation” according to the terminology generally used), this command allowing to generate on the winding 3 a law of predetermined tension to ensure advancement to reduced speed of the moving core.
Une séquence de fermeture de l'interrupteur de
démarrage 4 est illustrée sur la figure 3a et on a
représenté sur la figure 3b en regard un exemple de
l'évolution dans le temps du courant d'alimentation moyen
Ic circulant dans le bobinage B lors de cette séquence de
fermeture. La figure 3c illustre quant à elle la séquence
de fermeture du contact de puissance 3 qui correspond à
cette alimentation. A closing sequence of the
start-up 4 is illustrated in FIG. 3a and we have
shown in Figure 3b opposite an example of
the evolution over time of the average supply current
Ic circulating in the winding B during this sequence of
closing. Figure 3c illustrates the sequence
of closing the
Pendant toute une première durée T suivant la
fermeture de l'interrupteur 4, le courant Ic est maintenu
a un niveau d'appel suffisamment élevé pour garantir la
fermeture du contact de puissance 3. Cette durée T est
choisie suffisamment grande pour obtenir la fermeture des
contacts dans toutes les configurations de
fonctionnement : type de batterie, état de charge de la
batterie, type de démarreur, température de démarrage,....During a whole first duration T following the
closing of switch 4, current Ic is maintained
has a sufficiently high call level to guarantee the
A l'issue de cette première période, la commande PWM du microprocesseur U réduit le courant dans la bobine B à une valeur minimale « im » qui assure le maintien du circuit magnétique à l'état fermé.At the end of this first period, the PWM command from microprocessor U reduces the current in coil B to a minimum value "im" which ensures the maintenance of the magnetic circuit in closed state.
Comme on l'aura compris, l'incertitude sur le temps
réellement mis pour fermer le contact de puissance 3
impose de prendre un temps T surabondant pour le passage
en mode maintien.As will be understood, the uncertainty over time
actually put to close the
Mais, dans la majorité des cas, la fermeture du
contact de puissance 3 a lieu bien avant la fin de cette
période de durée T (entre les temps qui correspondent aux
points A et B représentés sur la figure 3b).However, in most cases, closing the
Il s'ensuit des échauffements inutiles du transistor
de puissance 3, pendant toute la partie de cette période
de durée T où le contact de puissance 3 est fermé, c'est
à dire pendant toute la période référencée par D sur la
figure 3c.This results in unnecessary heating of the transistor
of
Un but de l'invention est donc de résoudre ce problème.An object of the invention is therefore to resolve this problem.
Il a déjà été proposé dans DE 43 44 355 une commande d'alimentation d'un bobinage de contacteur selon laquelle on fournit au bobinage une alimentation de maintien dès que la fermeture du contacteur est détectée.An order has already been proposed in DE 43 44 355 supply of a contactor winding according to which the coil is supplied with holding power as soon as that the closing of the contactor is detected.
L'invention propose quant à elle une commande d'alimentation qui permet de minimiser de façon substantielle les échauffements du bobinage tout en assurant une fermeture d'une grande fiabilité. The invention proposes an order power supply which minimizes so substantial winding overheating while ensuring a highly reliable closure.
A cet effet l'invention propose un procédé pour la commande de l'alimentation du bobinage d'un contacteur de démarreur de véhicule automobile, selon lequel on alimente ledit bobinage selon un mode d'appel destiné à fermer ledit contacteur, puis selon un mode de maintien destiné à maintenir ledit contacteur fermé, caractérisé en ce qu'on mesure une tension correspondant à la tension d'alimentation du moteur électrique du démarreur, en ce qu'on détecte sur cette tension une chute correspondant à la fermeture du contacteur et en ce qu'on alimente le bobinage du contacteur en mode de maintien à l'issue d'un temps prédéterminé après la détection de la chute de tension.To this end, the invention proposes a method for the control of the winding supply of a contactor motor vehicle starter, according to which supplies said winding according to a call mode intended for close said contactor, then in a holding mode intended to keep said contactor closed, characterized in that we measure a voltage corresponding to the voltage the starter electric motor, that a fall corresponding to this voltage is detected at the closure of the contactor and in that the winding of the contactor in hold mode after a predetermined time after detection of the fall of voltage.
De préférence, la tension correspondant à la tension d'alimentation du moteur électrique du démarreur est mesurée de façon échantillonnée et, pour détecter la chute de tension, on compare à un seuil la différence entre deux mesures de tension successives.Preferably, the voltage corresponding to the voltage starter electric motor supply is measured in a sampled fashion and, to detect the voltage drop, the difference is compared to a threshold between two successive voltage measurements.
De façon avantageuse, le seuil correspond à une chute de tension de l'ordre de 1 Volt.Advantageously, the threshold corresponds to a voltage drop of the order of 1 Volt.
L'invention concerne également un dispositif pour la commande de l'alimentation d'un moteur électrique de démarreur de véhicule comportant un contacteur qui est un relais qui comprend un contact de puissance et un bobinage, ainsi qu'une unité de gestion destinée à commander successivement l'alimentation dudit bobinage selon un mode d'appel destiné à fermer ledit contacteur, puis selon un mode de maintien destiné à maintenir ledit contacteur fermé, ladite unité de gestion mesurant une tension qui, lorsque le démarrage est commandé, correspond à la tension d'alimentation au moteur électrique du démarreur et commandant l'alimentation du moteur électrique en fonction notamment de cette tension, caractérisé en ce que ladite unité de gestion comporte des moyens pour mettre en oeuvre le procédé précité. The invention also relates to a device for control of the power supply of an electric motor vehicle starter having a contactor which is a relay which includes a power contact and a winding, as well as a management unit intended for successively control the supply of said winding according to a call mode intended to close said contactor, then according to a maintenance mode intended to maintain said closed contactor, said management unit measuring a voltage which, when starting is ordered, corresponds to the supply voltage to the motor electric starter and controlling the supply of electric motor depending in particular on this voltage, characterized in that said management unit comprises means for implementing the above method.
Avantageusement, l'alimentation du bobinage est commandée par un transistor de type MOSFET, dont la grille est commandée par une tension à impulsions à largeur modulée générée par l'unité de gestion.Advantageously, the winding supply is controlled by a MOSFET type transistor, the gate is controlled by a pulse voltage at modulated width generated by the management unit.
De préférence, l'unité de gestion comportent des moyens pour commander la fermeture du transistor, lors de l'alimentation du bobinage en mode d'appel.Preferably, the management unit includes means for controlling the closing of the transistor, during winding supply in call mode.
L'invention concerne également un démarreur de véhicule automobile, caractérisé en ce qu'il comporte un dispositif de commande du type précité.The invention also relates to a starter for motor vehicle, characterized in that it comprises 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 doit être lue en regard des dessins annexés sur lesquels :
- la figure 1, déjà analysée, illustre un montage de démarreur conforme à un mode de réalisation connu de l'art antérieur ;
- la figure 2, également déjà discutée, illustre un montage de commande électronique de démarreur dont le contacteur comporte un bobinage unique qui réalise à la fois l'appel et le maintien ;
- les figures 3a à 3c illustrent une séquence possible pour l'alimentation du bobinage unique du contacteur du montage de la figure 2 ;
- la figure 4 est un organigramme qui illustre une commande de l'alimentation du bobinage unique du contacteur du montage de la figure 2.
- Figure 1, already analyzed, illustrates a starter assembly according to an embodiment known from the prior art;
- FIG. 2, also already discussed, illustrates an electronic starter control assembly the contactor of which comprises a single coil which performs both the call and the hold;
- Figures 3a to 3c illustrate a possible sequence for supplying the single winding of the contactor of the assembly of Figure 2;
- FIG. 4 is a flow diagram which illustrates a control of the supply of the single winding of the contactor of the assembly of FIG. 2.
La séquence de commande qui est illustrée sur la figure 4 est mise en oeuvre par les moyens de commande de l'alimentation du bobinage unique B qui sont illustrés sur la figure 2, c'est à dire par l'interrupteur commandé S et l'unité de gestion U, cette dernière étant programmée pour réaliser une commande dudit transistor S selon la séquence de commande qui va maintenant être décrite. The command sequence which is illustrated on the Figure 4 is implemented by the control means of single coil power supply B which are illustrated in Figure 2, i.e. by the controlled switch S and the management unit U, the latter being programmed to control said transistor S according to the command sequence which will now be described.
A la fermeture de l'interrupteur de démarrage 4, (étape I sur la figure 4), l'unité de gestion U est mise sous tension et s'initialise (étape II).When the start switch 4 is closed, (step I in FIG. 4), the management unit U is put powered up and initializes (step II).
La tension +Bat qu'elle reçoit sur son entrée « e » est échantillonnée et convertie numériquement. Les valeurs numériques ainsi obtenues pour la tension +Bat sont traitées par l'unité U, ladite unité U générant sur sa sortie « s » une tension PWM pour la commande de la grille du transistor S qui est notamment fonction de ces valeurs de la tension +Bat.The voltage + Bat that it receives on its input "e" is sampled and digitally converted. The numerical values thus obtained for the voltage + Bat are processed by the unit U, said unit U generating on its output “s” a PWM voltage for controlling the gate of transistor S which is notably a function of these voltage values + Bat.
En particulier, l'unité U compare la différence (+Bati - +Bati+1) entre deux mesures de tension successives +Bati et +Bati+1 (où i est un indice muet associé aux échantillonnages successifs), à un seuil dU donné (test IV).In particular, the unit U compares the difference (+ Bat i - + Bat i + 1 ) between two successive voltage measurements + Bat i and + Bat i + 1 (where i is a silent index associated with successive samplings), to a given dU threshold (test IV).
Tant que cette différence est inférieure audit seuil, le transistor S est commandé de façon que le courant Ic soit supérieur à im (étape III). La bobine B peut par exemple alors être mise sous pleine tension, l'unité de gestion U commandant alors la fermeture totale du transistor S.As long as this difference is less than said threshold, transistor S is controlled so that the current Ic is greater than im (step III). Coil B can for example then be put under full tension, the management unit U then commanding the total closure of transistor S.
Lorsque cette différence devient supérieure audit seuil, l'unité U change le rapport cyclique de sa tension de sortie PWM, de façon à commander le transistor S pour que le courant dans la bobine B soit maintenu à sa valeur im (étape VI), après une temporisation pendant une durée T1 (étape V). La valeur de im est choisie suffisante pour maintenir le circuit magnétique fermé.When this difference becomes greater than said threshold, unit U changes the duty cycle of its voltage PWM output, so as to control the transistor S for that the current in the coil B is maintained at its value im (step VI), after a time delay for a period T1 (step V). The value of im is chosen sufficient to keep the magnetic circuit closed.
La valeur de dU est choisie pour permettre de
détecter la chute de tension que produit la fermeture du
contact 3.The value of dU is chosen to allow
detect the voltage drop produced by closing the
On sait en effet que lorsque le contact de puissance
3 se ferme, il se produit un appel de courant très
important consécutif à la mise sous tension du moteur
électrique M. We know that when the
Il s'ensuit une brusque chute de tension - caractéristique de la fermeture du contact - généralement comprise entre 1 et 5 volts, c'est-à-dire nettement supérieure aux chutes de tension générées par la consommation du contacteur C.There is a sudden drop in blood pressure - characteristic of contact closure - generally between 1 and 5 volts, i.e. clearly greater than the voltage drops generated by the consumption of contactor C.
La valeur du seuil dU est par exemple choisi pour correspondre à 1 Volt.The value of the threshold dU is for example chosen for correspond to 1 Volt.
On notera que la temporisation T1 entre la détection
de la fermeture du contact 3 et le passage en mode
maintien permet d'éviter les phénomènes de rebonds et de
s'assurer que le contacteur est effectivement fermé,
lorsque l'on passe en mode maintien.Note that the time delay T1 between detection
of
Comme on l'aura compris, une telle commande permet de minimiser de façon substantielle les échauffements de la bobine B et du transistor de puissance S, sans nécessiter pour le démarreur aucune liaison électrique supplémentaire interne ou externe.As will be understood, such a command allows to substantially minimize the overheating of coil B and power transistor S, without require no electrical connection for the starter additional internal or external.
Claims (7)
- Method for controlling the supply to the winding of a motor vehicle starter contactor (C), according to which the said winding is supplied according to a demand mode intended to close the said contactor (C), and then according to a maintenance mode intended to keep the said contactor (C) closed, characterised in that a voltage corresponding to the supply voltage (+Bat) of the electric motor (M) of the starter is measured, in that there is detected on this voltage a drop corresponding to the closure of the contactor (C) and in that the winding (B) of the contactor (C) is supplied in maintenance mode at the end of a predetermined time after the detection of the voltage drop.
- Method according to Claim 1, characterised in that the voltage corresponding to the supply voltage of the starter electric motor (M) is measured in a sample fashion and in that, in order to detect the voltage drop, the difference between two successive voltage measurements is compared with a threshold (dU).
- Method according to Claim 2, characterised in that the threshold corresponds to a voltage drop of around 1 volt.
- Device for controlling the supply to a vehicle starter electric motor (M) comprising a contactor (C) which is a relay which comprises a power contact and a winding (B) as well as a management unit (U) intended to successively control the supply to the said winding (B) according to a demand mode intended to close the said contactor (C) and then according to a maintenance mode intended to keep the said contactor (C) closed, the said management unit (U) measuring a voltage which, when the starter is controlled, corresponds to the supply voltage of the starter electric motor (M) and controlling the supply to the electric motor (M) according in particular to this voltage, characterised in that the said management unit (U) comprises means for implementing the method according to one of the preceding claims.
- Device according to Claim 4, characterised in that the supply to the winding (B) is controlled by a transistor (S) of the MOSFET type whose gate is controlled by a pulse width modulated voltage generated by the management unit (U).
- Device according to Claim 5, characterised in that the management unit (U) comprises means for controlling the closure of the transistor (S) when the winding (B) is supplied in demand mode.
- Motor vehicle starter, characterised in that it comprises a control device according to one of Claims 4 to 6.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9715222 | 1997-12-03 | ||
| FR9715222A FR2771780B1 (en) | 1997-12-03 | 1997-12-03 | METHOD AND DEVICE FOR CONTROLLING THE POWER OF THE WINDING OF A MOTOR VEHICLE STARTER CONTACTOR |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0921305A2 EP0921305A2 (en) | 1999-06-09 |
| EP0921305A3 EP0921305A3 (en) | 1999-06-16 |
| EP0921305B1 true EP0921305B1 (en) | 2003-04-09 |
Family
ID=9514101
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP98403004A Expired - Lifetime EP0921305B1 (en) | 1997-12-03 | 1998-12-01 | Method and device for the alimentation control of a bobbin for a contactor of an automotive vehicle starter |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US6176212B1 (en) |
| EP (1) | EP0921305B1 (en) |
| BR (1) | BR9805083A (en) |
| DE (1) | DE69813157T2 (en) |
| ES (1) | ES2197438T3 (en) |
| FR (1) | FR2771780B1 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2802981B1 (en) * | 1999-12-28 | 2002-03-29 | Valeo Equip Electr Moteur | METHOD AND DEVICE FOR SUPPLYING AN ELECTRIC STARTER CONTACTOR OF A MOTOR VEHICLE WITH DETERMINABLE BEHAVIOR |
| US6364281B1 (en) * | 2000-03-22 | 2002-04-02 | Eaton Corporation | Method of energizing solenoid operated valves |
| DE10034779A1 (en) * | 2000-07-18 | 2002-01-31 | Bosch Gmbh Robert | Control device for starters of internal combustion engines |
| US7857281B2 (en) * | 2006-06-26 | 2010-12-28 | Incova Technologies, Inc. | Electrohydraulic valve control circuit with magnetic hysteresis compensation |
| FR2913727B1 (en) * | 2007-03-16 | 2009-05-08 | Valeo Equip Electr Moteur | DEVICE FOR CONTROLLING A MOTOR VEHICLE STARTER |
| US9528487B2 (en) | 2011-11-17 | 2016-12-27 | Ford Global Technologies, Llc | Starter motor control with pre-spin |
| WO2014055530A1 (en) | 2012-10-01 | 2014-04-10 | Thermo King Corporation | Methods and systems for starting an electrically controlled engine of a transport refrigeration system |
| US10001103B1 (en) * | 2016-12-15 | 2018-06-19 | Borgwarner, Inc. | System with multiple starters and smart relay |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4026232C2 (en) * | 1990-08-18 | 2003-09-04 | Bosch Gmbh Robert | Device for monitoring a speed sensor |
| IT1263110B (en) * | 1992-03-24 | 1996-07-30 | Magneti Marelli Spa | STARTING SYSTEM FOR AN INTERNAL COMBUSTION AND SOLENOID ENGINE USABLE IN SUCH STARTING SYSTEM |
| DE4344355A1 (en) * | 1993-01-16 | 1994-07-21 | Volkswagen Ag | Starting IC engine in car |
| US5622148A (en) * | 1995-12-04 | 1997-04-22 | Ford Motor Company | Control for a motor vehicle cranking system |
| FR2746449B1 (en) * | 1996-03-21 | 1998-06-12 | Valeo Equip Electr Moteur | METHOD AND DEVICE FOR CONTROLLING A POWER CONTACTOR OF A MOTOR VEHICLE STARTER |
-
1997
- 1997-12-03 FR FR9715222A patent/FR2771780B1/en not_active Expired - Fee Related
-
1998
- 1998-12-01 DE DE69813157T patent/DE69813157T2/en not_active Expired - Lifetime
- 1998-12-01 ES ES98403004T patent/ES2197438T3/en not_active Expired - Lifetime
- 1998-12-01 EP EP98403004A patent/EP0921305B1/en not_active Expired - Lifetime
- 1998-12-02 BR BR9805083-4A patent/BR9805083A/en active Search and Examination
- 1998-12-03 US US09/204,836 patent/US6176212B1/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| FR2771780A1 (en) | 1999-06-04 |
| DE69813157D1 (en) | 2003-05-15 |
| ES2197438T3 (en) | 2004-01-01 |
| US6176212B1 (en) | 2001-01-23 |
| DE69813157T2 (en) | 2003-11-20 |
| BR9805083A (en) | 1999-12-14 |
| EP0921305A3 (en) | 1999-06-16 |
| EP0921305A2 (en) | 1999-06-09 |
| FR2771780B1 (en) | 2000-02-18 |
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