WO2019106245A1 - Method for detecting the sticking of one of two relays connected in series in a control line for a motor vehicle starter - Google Patents

Method for detecting the sticking of one of two relays connected in series in a control line for a motor vehicle starter Download PDF

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Publication number
WO2019106245A1
WO2019106245A1 PCT/FR2018/052537 FR2018052537W WO2019106245A1 WO 2019106245 A1 WO2019106245 A1 WO 2019106245A1 FR 2018052537 W FR2018052537 W FR 2018052537W WO 2019106245 A1 WO2019106245 A1 WO 2019106245A1
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WO
WIPO (PCT)
Prior art keywords
relay
control
starter
signal
corn
Prior art date
Application number
PCT/FR2018/052537
Other languages
French (fr)
Inventor
Olivier Daunas
Original Assignee
Psa Automobiles Sa
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Psa Automobiles Sa filed Critical Psa Automobiles Sa
Publication of WO2019106245A1 publication Critical patent/WO2019106245A1/en

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
    • G01R31/3277—Testing of circuit interrupters, switches or circuit-breakers of low voltage devices, e.g. domestic or industrial devices, such as motor protections, relays, rotation switches
    • G01R31/3278—Testing of circuit interrupters, switches or circuit-breakers of low voltage devices, e.g. domestic or industrial devices, such as motor protections, relays, rotation switches of relays, solenoids or reed 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
    • F02N11/108—Safety devices for diagnosis of the starter or its components
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/005—Testing of electric installations on transport means
    • G01R31/006—Testing of electric installations on transport means on road vehicles, e.g. automobiles or trucks
    • G01R31/007—Testing of electric installations on transport means on road vehicles, e.g. automobiles or trucks using microprocessors or computers
    • 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
    • F02N11/0814—Circuits or control means specially adapted for starting of engines comprising means for controlling automatic idle-start-stop
    • F02N11/0818—Conditions for starting or stopping the engine or for deactivating the idle-start-stop mode
    • F02N11/0825—Conditions for starting or stopping the engine or for deactivating the idle-start-stop mode related to prevention of engine restart failure, e.g. disabling automatic stop at low battery state
    • 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
    • F02N2300/00—Control related aspects of engine starting
    • F02N2300/30—Control related aspects of engine starting characterised by the use of digital means
    • F02N2300/302—Control related aspects of engine starting characterised by the use of digital means using data communication
    • F02N2300/304—Control related aspects of engine starting characterised by the use of digital means using data communication with other systems inside the vehicle

Definitions

  • the present invention relates to a method for detecting bonding of at least one of two electrical relays arranged in series in a control line delivering a control voltage for an internal combustion engine starter equipping a motor vehicle.
  • the starter is energized when the two relays are closed according to a respective closing command, one of the two relays being an authorization relay closing before and opening after the other relay said control relay.
  • the present invention finds a particularly advantageous application for the detection of controlled relays for a motor vehicle internal combustion engine starter equipped with an automatic stop and start system of the internal combustion engine or any vehicle requiring stops and restarts. frequent combustion engine of the motor vehicle.
  • FIG. 1a it is known to use a starter 10 of a motor vehicle comprising an electric motor 7 powered by an electric supply line 12 and connected to a control line 1 1.
  • This command line 1 1 pilot two solenoids 6, 6a present in the starter 10.
  • These solenoid 6, 6a provide mainly as electromagnetic relays two functions when they are electrically powered.
  • the first function is the closing of a contactor 8 allowing the electrical power supply of the electric motor 7 of the starter 10 by the power supply line 12.
  • the second function is the meshing of the pinions of the electric motor 7 with those of the motor internal combustion of the motor vehicle to drive the internal combustion engine. In order it is the commitment that drives the rotation of the electric motor.
  • the control line 1 1 has two relays 1, 2, arranged in series, in addition to the activation means 6, 6a of the contactor 8 of the supply line 12 that are the solenoid or 6, 6a.
  • Each relay 1, 2 respectively comprises a winding 1a, 2a, and a contactor 1b, 2b arranged on the line 1 1 control.
  • the power supply of the solenoid 1 a, (respectively 2a) operates the closing of the contactor 2a, (respectively) 2b.
  • a control unit 5 supervises the power supply of the control line 1 1 by controlling the two relays 1, 2, this respectively by the commands cmd 1, cmd 2, windings 1a, 1b.
  • the command control unit 5 thus pilot two wired type outputs in all or nothing. Each output directly controls the power supply of one of the windings 1a, 1b, with a command cmd 1 and cmd 2 by relay 1, 2.
  • the closures of the two relays 1, 2 feed the solenoids 6, 6a of the starter 10 which rotate this one by its electric motor 7.
  • the relays 1, 2, control the engagement of a starter pinion and not directly the power supply of the electric motor 7. This power supply is performed at the end of mechanical engagement of the pinion by a power supply line 12.
  • the electric motor 7 of the starter 10 is thus powered by this power supply line 12 when the two relays 1, 2 are closed according to a closing command cmd 1, cmd 2 respectively.
  • One of the two relays 1, 2, of the control line 1 1 is an authorization relay closing before and opening after the other relay said control relay. It is alternated between the relays 1, 2, each relay 1, 2, successively becoming the authorization relay then the control relay for successive restarts. At each activation, it is therefore never the same relay 1, 2, which undergoes the peak current due to solenoids 6, 6a.
  • Relays 1, 2 have the disadvantage of sometimes remaining stuck, with internal slats following a command. This is especially true for the control relay but can also occur on the authorization relay.
  • This collage can be temporary or permanent. The final collages usually arrive at the end of the life of the relays 1, 2. For a temporary bonding, the relay 1, 2, can take off for example at the next activation, the powering up of the relay 1, 2, which can initiate its separation . It is therefore necessary to carry out regular diagnoses to check whether one of the relays 1, 2 remains stuck and to estimate whether this bonded state is temporary or permanent.
  • EP2199594B1 discloses a starting device of an internal combustion engine for the stop and start function of a vehicle, having a first relay with a main line connected to an ignition switch; a second relay with a main line connected to the main line of said first relay and an ignition circuit of a starter. The main lines, when closed, determine the activation of the starter for starting the internal combustion engine.
  • An electronic control unit has relay control means, so that during engine start conditions by means of the automatic stop and restart function, it is determined that the main lines of the relays are closed with a first delay. between these, so that it is possible to exchange the delay between the relays for successive alternating starts.
  • diagnostic means which verify the voltage between the main lines of the relays and relay control means which determine the alternating opening and closing of the main lines to enable diagnosis.
  • the diagnosis is made on one of the relays, how to manage the starter in the case of a glued relay. Moreover, the diagnosis thus made does not make it possible to differentiate between a temporary bonded state of the relay and a permanent state.
  • the relay diagnostic is only present to check if one of the relays has remained stuck.
  • the problem underlying the invention is to perform a detection of a bonded state of one of the two relays controlled in a control line of a motor vehicle starter by means largely already present in the starter assembly being associated with the starter.
  • the starter motor is not powered directly from the control line integrating the relays but has its own power line. It follows that the relays act indirectly on the power supply of the starter motor.
  • the technical effect is to obtain a simple and effective detection of a faulty relay, this occurring when the relay remains stuck.
  • the control relay is tested when it is open while the permitting relay is still closed but no current should then pass through the command line unless there is a faulty control relay.
  • the authorization and control relays are not open at the same time to make a detection on the control relay in the open position while the authorization relay remains closed. If a voltage is detected during readback in the command line, it is because the control relay, then theoretically open, has remained stuck.
  • the authorization and control signals are alternated at each starting of an internal combustion engine taking place during the same current phase of running the vehicle. This balances the wear of the relays.
  • the control relay no longer performing its function at least temporarily is judiciously placed as an authorization relay. This avoids inadvertent control of the starter, that is to say an unwanted command.
  • a glued control relay would always command starter power as soon as the relay authorization is closed, which is to be avoided.
  • the relay commands are generated by software present in a control unit of the starter. This unit may malfunction due to a problem with the electronics or a failure in the software producing an unwanted command.
  • a detection signal of a glued relay is not sent during the current running.
  • the deficient detected control relay may be only temporarily glued and peel off for example as soon as it is used in authorization relay. This is not limiting and it can also be sent to a detection signal when, for example, the relay is considered old and may be glued.
  • the first start of this next run is sent to the relay having been detected as being glued the control signal and the other the authorization signal, the voltage of the control line is measured at a point between the nearest relay of the starter and this starter, between the moment when the control signal ends and the moment when the authorization signal ends, and if a voltage non-zero is recorded between these two moments, the collage of the relay having previously been detected as glued is confirmed.
  • control relay is considered with a high probability as permanently bonded and in the second case it is determined that the bonding was only temporary. It can be implemented several diagnostics after several runs.
  • the relay having received the control signal is confirmed as being glued
  • a single exchange of the authorization and control signals sent on the relays is carried out immediately and then an inhibition of the alternation, the relay confirmed as being glued then remaining the relay receiving the authorization signal throughout the rolling phase.
  • a confirmation signal of the glued relay is sent during the running.
  • the functions present in the motor vehicle requiring start-ups other than an initial start of a driving phase are at least temporarily suspended with the sending of the confirmation signal of a relay stuck while driving.
  • the invention also relates to an internal combustion engine starting assembly comprising:
  • control line of the supply line having two relays arranged in series
  • control unit comprises acquisition means, processing by software instructions contained in a memory and control required to implement a method according to any one of the preceding claims.
  • the present invention makes it possible to avoid unwanted commands by the starter control unit for setting up a specific function requiring stopping and restarting of the internal combustion engine.
  • Such unwanted commands represent a risk of voltage drop of the on-board system because of the current draw, or even the risk of starter breaking.
  • the starter is a coil starter.
  • the invention finally relates to a motor vehicle comprising an internal combustion engine, characterized in that it comprises such a starting assembly for the internal combustion engine.
  • the motor vehicle is a hybrid vehicle, a vehicle equipped with an automatic shutdown and restart system of the internal combustion engine and / or a vehicle equipped with an automated freewheel system.
  • These vehicles have the particularity of presenting frequent stops and restarts of the internal combustion engine.
  • FIG. 1a is a schematic representation of a starter assembly of the prior art
  • FIG. 1b is a schematic representation of a starter assembly comprising the starter and its control system with a control unit and a control line of the starter incorporating said relays respectively for authorization and control, such together able to implement the method of the invention
  • a starter assembly is the starter 10, taken in combination with its control system comprising the unit. control command 5 and the command line 1 1 with relay 1, 2 of the starter control. A specific line of control of each winding 1a, 2a of the relay 1, 2 part of the control unit 5 to reach the associated relay.
  • the starter 10 of an internal combustion engine such a motor that can equip a motor vehicle, comprises an electric motor 7 powered by an electric power supply line 12 which brings the electric power to the electric motor 7.
  • the starter 10 is also connected to a motor. command line 1 1.
  • the control line 1 1 has two relays 1, 2, arranged in series, activation means 6, 6a of opening and closing means 8 of the supply line 12 and is connected to a control unit 5 controlling the power supply of the control line 1 1 by controlling the two relays 1, 2.
  • the control of the relays of the power supply of the control line 1 1 is effected by a control module 3 integrated in the control unit 5.
  • the relays 1, 2, each comprise a contactor 1b, 2b can be open or closed according to the power supply of a winding 1a, 2a, each being connected to a specific relay control line cmd 1, cmd 2.
  • the two relays 1, 2, controlled are arranged in series in the control line 11 delivering a control voltage, the electric motor 7 being powered by its power supply line 12 when the two relays 1, 2, are closed according to a closing command cmd 1, cmd 2 respective.
  • This is done by one or two solenoids 6, 6a inside the starter 10 which, when electrically powered, close a contactor or switch 8 in the supply line 12 of the starter 10.
  • control module 3 further comprises a flip-flop 3a which makes it possible to send the control signal, corn, to the command line cmd1 and the authorization signal, auto, to the command line cmd2 or vice versa.
  • the control unit 5 comprises the acquisition means, processing by software instructions contained in a memory and the control means required to implement the method of the invention.
  • the control control unit 5 comprises a relay diagnosis module 4 comprising means for measuring a voltage in the control line 1 1 and means for detecting a bonding of one of the two relay 1, 2, by measuring the voltage in the relay diagnostic module 4 present in the control unit 5.
  • a measurement of the voltage of the control line 1 1 is provided at a point U of the control line 1 1 between the relay 2, the closest to the starter 10 and the starter 10. This U point of measurement is connected by a voltage line 13 from this measurement point and returning to the relay diagnosis module 4 of the control unit 5.
  • Figures 2 to 4 illustrate the operation of the method of the invention.
  • the reference corn indicates a control signal and the auto reference indicates an authorization signal, the authorization signal, auto, starting chronologically before and ending after the control signal, corn.
  • the references cmd 1 and cmd 2 indicate the signals received by the coils 1a and 2a of the relays previously referenced 1, and 2 via the command lines cmd1, cmd2.
  • the reference RT indicates the voltage return via line 13 and 4a the actual voltage return.
  • the def reference indicates a possible fault successively for the relay referenced previously 1, and the relay referenced previously 2. This can be done from several successive diagnoses during different runs.
  • FIG. 2 shows a first example for which no fault, in other words no contactor bonding, is detected for relays 1 and 2, the example of this control having here place in the middle of a rolling.
  • rolling means a session of use of the vehicle between a putting in contact, for example by ignition key or a start button, the vehicle and a cut-off contact by the same means.
  • the computer or computers of the vehicle are awake, the vehicle is now able to provide engine torque.
  • the computer (s) are put to sleep, the vehicle is no longer able to provide engine torque.
  • a stop and a restart performed by a system of automatic stop and restart, as part of the same rolling.
  • the authorization command is alternately on the cmd command 1 of the first relay 1 or the cmd command 2 of the second relay 2. It is carried out a measurement of the voltage 4a at the output U of the two relays via the voltage feedback RT.
  • the authorization signal, auto is sent to the relay 2, via the command line cmd 2 while the control signal, corn, is sent to the relay 1, via the cmd command line 1.
  • the authorization signal, auto is therefore sent to relay 1, via the command line cmd 1
  • the control signal, corn is sent to relay 2, via the command line cmd 2.
  • the measurement the voltage of the control line between the moment when the control signal, corn, ends and the moment when the authorization signal, auto, ends, indicates a zero voltage between these two moments. We therefore consider the relay having received the control signal, corn, as not glued.
  • the authorization signal, auto is sent to the relay 2, via the command line cmd 2 while the control signal, corn, is sent to the relay 1, via the cmd command line 1.
  • the output voltage 4a is non-zero when the two relays are closed and is zero upon opening of one of the relays.
  • Figure 3 now illustrates a case of bonding the first relay 1 by placing itself here again in the middle of a taxi.
  • the authorization signal, auto is first sent to relay 2, via the command line cmd 2 while the control signal, corn, is sent to relay 1, via the command line cmd 1.
  • the first relay 1 receives the authorization signal, auto, via the command cmd 1 and the second relay 2 receives the control signal, corn, via the command cmd 2.
  • This inversion ensures the proper operation of the starter kit. At this point, the fault of the first relay is not confirmed.
  • B, C the alternation of the commands is inhibited until the end of the rolling.
  • FIG. 4 illustrates such confirmation of sticking of the first relay.
  • the alternation is forced so that the control signal, corn, is sent to the relay detected as glued, that is to say, here the first relay 1.
  • pilot authorization signal auto
  • auto When the pilot authorization signal, auto, begins, it closes the second relay 2. In the case of a first start, this is done almost simultaneously.
  • the measurement of the voltage 4a shows that a voltage is still present while the first relay 1 should in principle be open.
  • the confirmation of the collage of the first relay is done. It is then proceeded to the inversion of the orders.
  • the first relay receives the authorization signal, auto, and the second relay 2 now receives the control signal, corn.
  • the relay detected as glued during the previous run is confirmed as being glued, it is carried out a single alternation of the authorization, auto, and control relay signals, corn, on the relays 1, 2. Then, this alternation is inhibited, the relay confirmed as being glued then receiving the authorization signal, auto, throughout the rest of the rolling.
  • the bonded state of the relay confirmed as such can be presumably permanent, it can be sent a confirmation signal of the glued relay during the running.
  • the functions present in the motor vehicle requiring start-ups and restarts other than initial start-up may be at least temporarily suspended with the sending of the confirmation signal of a relay stuck during travel.
  • the method of the invention is particularly suitable in the case of a starter said coil, that is to say, stator and rotor of the electric motor of the starter are equipped with coils whose inductors are at the origin of breaking sparks at the opening of the relay receiving the control signal.
  • the motor vehicle may be a hybrid vehicle, a vehicle equipped with an automatic stop and start system of the internal combustion engine and / or a vehicle equipped with an automated freewheel system or any other function involving stops and frequent restarts of the internal combustion engine of the motor vehicle. These functions can be combined together or individually.
  • the automated freewheel mode is a function that allows a motor vehicle launched to continue driving while decoupling a transmission to the drive wheels of the vehicle of the internal combustion engine of the vehicle.
  • the transmission conventionally comprises a gearbox and its clutch.
  • the internal combustion engine no longer performing drive can then be idle or stopped.
  • This function is activated when the speed of the vehicle is sufficient, for example for an extra-urban profile and in particular a descending road profile.

Abstract

The invention relates to a method for detecting the sticking of one of two relays (1, 2) that are connected in series in a control line (11) delivering a voltage for a starter (10) for an internal combustion engine fitted to a vehicle, an electric motor (7) of the starter (10) being supplied with power when the relays (1, 2) are closed, each one by a distinct signal, one of the two signals being an authorization signal (auto) starting before and ending after the other signal, referred to as the control signal (com), characterized in that the voltage on the control line (11) between the relay (2) closest to the starter (10) and this starter (10) is measured between the time at which the control signal (com) ends and the time at which the authorization signal (auto) ends, and if a nonzero voltage is read between these two moments, the relay having received the control signal (com) is considered to be stuck.

Description

PROCEDE DE DETECTION DE COLLAGE D’UN DE DEUX RELAIS DISPOSES EN SERIE DANS UNE LIGNE DE COMMANDE D’UN  METHOD FOR DETECTING THE BONDING OF ONE OF TWO RELAYS DISPOSED IN SERIES IN A CONTROL LINE OF ONE
DEMARREUR DE VEHICULE AUTOMOBILE  MOTOR VEHICLE STARTER
La présente invention concerne un procédé de détection de collage d’au moins un de deux relais électriques disposés en série dans une ligne de commande délivrant une tension de commande pour un démarreur de moteur à combustion interne équipant un véhicule automobile. The present invention relates to a method for detecting bonding of at least one of two electrical relays arranged in series in a control line delivering a control voltage for an internal combustion engine starter equipping a motor vehicle.
Dans cette configuration, le démarreur est alimenté quand les deux relais sont fermés suivant une commande de fermeture respective, un des deux relais étant un relais d’autorisation se fermant avant et s’ouvrant après l’autre relais dit relais de commande. In this configuration, the starter is energized when the two relays are closed according to a respective closing command, one of the two relays being an authorization relay closing before and opening after the other relay said control relay.
La présente invention trouve une application particulièrement intéressante pour la détection de relais commandés pour un démarreur de moteur à combustion interne de véhicule automobile muni d’un système d’arrêt et de redémarrage automatiques du moteur à combustion interne ou tout véhicule nécessitant des arrêts et redémarrages fréquents du moteur à combustion interne du véhicule automobile. The present invention finds a particularly advantageous application for the detection of controlled relays for a motor vehicle internal combustion engine starter equipped with an automatic stop and start system of the internal combustion engine or any vehicle requiring stops and restarts. frequent combustion engine of the motor vehicle.
En se référant à la figure 1 a, il est connu d’utiliser un démarreur 10 de véhicule automobile comprenant un moteur électrique 7 alimenté par une ligne d’alimentation 12 électrique et relié à une ligne de commande 1 1. Cette ligne de commande 1 1 pilote deux solénoïdes 6, 6a présents dans le démarreur 10. Ces solénoïdes 6, 6a assurent principalement en tant que relais électromagnétiques deux fonctions lorsqu'ils sont alimentés électriquement. Referring to Figure 1a, it is known to use a starter 10 of a motor vehicle comprising an electric motor 7 powered by an electric supply line 12 and connected to a control line 1 1. This command line 1 1 pilot two solenoids 6, 6a present in the starter 10. These solenoid 6, 6a provide mainly as electromagnetic relays two functions when they are electrically powered.
La première fonction est la fermeture d'un contacteur 8 permettant l'alimentation électrique du moteur électrique 7 du démarreur 10 par la ligne d’alimentation électrique 12. La deuxième fonction est l'engrènement des pignons du moteur électrique 7 avec ceux du moteur à combustion interne du véhicule automobile afin d'entraîner le moteur à combustion interne. Dans l’ordre c’est l’engagement qui entraîne la mise en rotation du moteur électrique. The first function is the closing of a contactor 8 allowing the electrical power supply of the electric motor 7 of the starter 10 by the power supply line 12. The second function is the meshing of the pinions of the electric motor 7 with those of the motor internal combustion of the motor vehicle to drive the internal combustion engine. In order it is the commitment that drives the rotation of the electric motor.
Dans un contexte automobile, le dispositif de commande d'alimentation électrique du ou des solénoïdes 6, 6a de démarreur 10 doit à la fois interdire les risques d'activation et de désactivation intempestives de commandes de démarrage, tout en étant résistant en utilisation. La ligne de commande 1 1 présente deux relais 1 , 2, disposés en série, en plus des moyens d’activation 6, 6a du contacteur 8 de la ligne d’alimentation 12 que sont le ou les solénoïdes 6, 6a. Chaque relais 1 , 2 comprend respectivement un bobinage 1 a, 2a, et un contacteur 1 b, 2b disposé sur la ligne 1 1 de commande. Lorsque le bobinage 1 a (respectivement 1 b) n’est pas alimenté électriquement le contacteur 2a (respectivement 2b) est ouvert. L’alimentation électrique du solénoïde 1 a, (respectivement 2a), opère la fermeture du contacteur 2a, (respectivement) 2b. In an automotive context, the power supply control device of the solenoid 6 or 6a of the starter 10 must both prohibit the risk of inadvertent activation and deactivation of start commands, while being resistant in use. The control line 1 1 has two relays 1, 2, arranged in series, in addition to the activation means 6, 6a of the contactor 8 of the supply line 12 that are the solenoid or 6, 6a. Each relay 1, 2 respectively comprises a winding 1a, 2a, and a contactor 1b, 2b arranged on the line 1 1 control. When the winding 1 a (respectively 1 b) is not electrically powered switch 2a (respectively 2b) is open. The power supply of the solenoid 1 a, (respectively 2a), operates the closing of the contactor 2a, (respectively) 2b.
Une unité de contrôle commande 5 supervise l’alimentation électrique de la ligne de commande 1 1 par commande des deux relais 1 , 2, ceci respectivement par les commandes cmd 1 , cmd 2, des bobinages 1 a, 1 b. A control unit 5 supervises the power supply of the control line 1 1 by controlling the two relays 1, 2, this respectively by the commands cmd 1, cmd 2, windings 1a, 1b.
L’unité de contrôle commande 5 pilote donc deux sorties de type filaire en tout ou rien. Chaque sortie commande directement l’alimentation électrique d’un des bobinages 1 a, 1 b, avec une commande cmd 1 et cmd 2 par relais 1 , 2. Les fermetures des deux relais 1 , 2, alimentent les solénoïdes 6, 6a du démarreur 10 qui mettent en rotation celui-ci par son moteur électrique 7. The command control unit 5 thus pilot two wired type outputs in all or nothing. Each output directly controls the power supply of one of the windings 1a, 1b, with a command cmd 1 and cmd 2 by relay 1, 2. The closures of the two relays 1, 2 feed the solenoids 6, 6a of the starter 10 which rotate this one by its electric motor 7.
Les relais 1 , 2, commandent l’engagement d’un pignon de démarreur et pas directement l’alimentation du moteur électrique 7. Cette alimentation est réalisée en fin d’engagement mécanique du pignon par une ligne d’alimentation 12 électrique. Le moteur électrique 7 du démarreur 10 est donc alimenté par cette ligne d’alimentation 12 électrique quand les deux relais 1 , 2, sont fermés suivant une commande de fermeture cmd 1 , cmd 2 respective. The relays 1, 2, control the engagement of a starter pinion and not directly the power supply of the electric motor 7. This power supply is performed at the end of mechanical engagement of the pinion by a power supply line 12. The electric motor 7 of the starter 10 is thus powered by this power supply line 12 when the two relays 1, 2 are closed according to a closing command cmd 1, cmd 2 respectively.
Un des deux relais 1 , 2, de la ligne de commande 1 1 est un relais d’autorisation se fermant avant et s’ouvrant après l’autre relais dit relais de commande. Il est alterné entre les relais 1 , 2, chaque relais 1 , 2, devenant successivement le relais d’autorisation puis le relais de commande pour des redémarrages successifs. A chaque activation, ce n'est donc jamais le même relais 1 , 2, qui subit le pic de courant dû aux solénoïdes 6, 6a. One of the two relays 1, 2, of the control line 1 1 is an authorization relay closing before and opening after the other relay said control relay. It is alternated between the relays 1, 2, each relay 1, 2, successively becoming the authorization relay then the control relay for successive restarts. At each activation, it is therefore never the same relay 1, 2, which undergoes the peak current due to solenoids 6, 6a.
Les relais 1 , 2, ont l'inconvénient de parfois rester collés, avec des lamelles internes suite à une commande. Cela vaut surtout pour le relais de commande mais peut se produire aussi sur le relais d’autorisation. Ce collage peut être temporaire ou définitif. Les collages définitifs arrivent généralement en fin de vie des relais 1 , 2. Pour un collage temporaire, le relais 1 , 2, peut se décoller par exemple à la prochaine activation, la mise sous tension du relais 1 , 2, pouvant initier son décollement. Il convient donc d’effectuer régulièrement des diagnostics pour vérifier si un des relais 1 , 2, reste collé et d’estimer si cet état collé est temporaire ou définitif. Relays 1, 2 have the disadvantage of sometimes remaining stuck, with internal slats following a command. This is especially true for the control relay but can also occur on the authorization relay. This collage can be temporary or permanent. The final collages usually arrive at the end of the life of the relays 1, 2. For a temporary bonding, the relay 1, 2, can take off for example at the next activation, the powering up of the relay 1, 2, which can initiate its separation . It is therefore necessary to carry out regular diagnoses to check whether one of the relays 1, 2 remains stuck and to estimate whether this bonded state is temporary or permanent.
Le document EP2199594B1 décrit un dispositif de démarrage d’un moteur à combustion interne pour la fonction d'arrêt et de démarrage d’un véhicule, comportant un premier relais avec une ligne principale raccordée à un commutateur d'allumage; un second relais avec une ligne principale raccordée à la ligne principale dudit premier relais et à un circuit d'allumage d'un démarreur. Les lignes principales, lorsqu’elles sont fermées, déterminent l'activation du démarreur pour le démarrage du moteur à combustion interne. EP2199594B1 discloses a starting device of an internal combustion engine for the stop and start function of a vehicle, having a first relay with a main line connected to an ignition switch; a second relay with a main line connected to the main line of said first relay and an ignition circuit of a starter. The main lines, when closed, determine the activation of the starter for starting the internal combustion engine.
Une unité de commande électronique comporte des moyens de commande des relais, de sorte que lors de conditions de démarrage du moteur au moyen de la fonction d'arrêt et de redémarrage automatiques, il est déterminé la fermeture des lignes principales des relais avec un premier délai entre ces derniers, de sorte qu'il soit possible d'échanger le délai entre les relais pour des démarrages successifs alternés. An electronic control unit has relay control means, so that during engine start conditions by means of the automatic stop and restart function, it is determined that the main lines of the relays are closed with a first delay. between these, so that it is possible to exchange the delay between the relays for successive alternating starts.
Ce document décrit des moyens de diagnostic qui vérifient la tension entre les lignes principales des relais et des moyens de commande des relais qui déterminent l'ouverture et la fermeture alternées des lignes principales afin de permettre le diagnostic. This document describes diagnostic means which verify the voltage between the main lines of the relays and relay control means which determine the alternating opening and closing of the main lines to enable diagnosis.
Dans ce document, il n’est pas décrit comment le diagnostic s’effectue sur un des relais, comment gérer le démarreur dans le cas d’un relais collé. De plus, le diagnostic ainsi réalisé ne permet pas de différencier entre un état collé temporaire du relais et un état permanent. Le diagnostic des relais est seulement présent pour vérifier si l'un des relais est resté collé. In this document, it is not described how the diagnosis is made on one of the relays, how to manage the starter in the case of a glued relay. Moreover, the diagnosis thus made does not make it possible to differentiate between a temporary bonded state of the relay and a permanent state. The relay diagnostic is only present to check if one of the relays has remained stuck.
Par conséquent, le problème à la base de l’invention est de réaliser une détection d’un état collé d’un des deux relais commandés dans une ligne de commande d’un démarreur de véhicule automobile par des moyens en grande partie déjà présents dans l’ensemble démarreur en étant associés avec le démarreur. Therefore, the problem underlying the invention is to perform a detection of a bonded state of one of the two relays controlled in a control line of a motor vehicle starter by means largely already present in the starter assembly being associated with the starter.
Pour atteindre cet objectif, il est prévu selon l’invention un procédé de détection de collage d’au moins un de deux relais électriques disposés en série dans une ligne de commande délivrant une tension de commande pour un démarreur de moteur à combustion interne équipant un véhicule automobile, un moteur électrique du démarreur étant alimenté quand les deux relais sont fermés, chacun par un signal distinct, un des deux signaux étant un signal dit d’autorisation commençant avant et se terminant après l’autre signal, dit signal de commande, caractérisé en ce qu’on mesure la tension de la ligne de commande à un point entre le relais le plus proche du démarreur et ce démarreur, entre le moment où le signal de commande se termine et le moment où le signal d’autorisation se termine, et si une tension non nulle est relevée entre ces deux moments, on considère le relais ayant reçu le signal de commande comme collé. To achieve this objective, it is provided according to the invention a method for detecting bonding of at least one of two electrical relays arranged in series in a control line delivering a control voltage for an internal combustion engine starter equipping a a motor vehicle, an electric motor of the starter being energized when the two relays are closed, each by a separate signal, one of the two signals being a so-called authorization signal starting before and ending after the other signal, called the control signal, characterized in that the voltage of the control line is measured at a the point between the nearest relay of the starter and this starter, between the moment when the control signal ends and the moment when the authorization signal ends, and if a non-zero voltage is detected between these two moments, consider the relay having received the control signal as pasted.
Le moteur du démarreur n’est pas alimenté directement par la ligne de commande intégrant les relais mais présente sa propre ligne d’alimentation électrique. Il s’ensuit que les relais agissent indirectement sur l’alimentation électrique du moteur du démarreur. The starter motor is not powered directly from the control line integrating the relays but has its own power line. It follows that the relays act indirectly on the power supply of the starter motor.
L’effet technique est d’obtenir une détection simple et efficace d’un relais déficient, ceci se produisant quand le relais reste collé. Le relais de commande est testé quand il est ouvert alors que le relais d’autorisation est encore fermé mais aucun courant ne devrait alors passer par la ligne de commande sauf relais de commande déficient. Ceci représente une première détection et peut ne pas suffire à différencier un relais temporairement collé d’un relais définitivement collé. The technical effect is to obtain a simple and effective detection of a faulty relay, this occurring when the relay remains stuck. The control relay is tested when it is open while the permitting relay is still closed but no current should then pass through the command line unless there is a faulty control relay. This represents a first detection and may not be sufficient to differentiate a temporarily glued relay from a permanently glued relay.
Dans le cadre de l’invention, il est profité que les relais d’autorisation et de commande ne sont pas ouverts en même temps pour faire une détection sur le relais de commande en position ouverte tandis que le relais d’autorisation reste fermé. Si une tension est détectée en relecture dans la ligne de commande, c’est que le relais de commande, alors en théorie ouvert, est resté collé. In the context of the invention, it is advantageous that the authorization and control relays are not open at the same time to make a detection on the control relay in the open position while the authorization relay remains closed. If a voltage is detected during readback in the command line, it is because the control relay, then theoretically open, has remained stuck.
Avantageusement, tant qu’aucun relais n’est pas détecté comme étant collé, les signaux d’autorisation et de commande sont alternés à chaque démarrage de moteur à combustion interne ayant lieu au cours d’une même phase courante de roulage du véhicule. Ceci permet d’équilibrer l’usure des relais. Advantageously, as long as no relay is not detected as being bonded, the authorization and control signals are alternated at each starting of an internal combustion engine taking place during the same current phase of running the vehicle. This balances the wear of the relays.
Avantageusement quand le relais ayant reçu le signal de commande est détecté comme étant collé, il est effectué immédiatement un seul échange des signaux d’autorisation et de commande envoyés sur les relais et ensuite une inhibition de l’alternance, le relais détecté comme étant collé restant alors le relais recevant le signal d’autorisation pendant toute la phase courante de roulage. Advantageously, when the relay having received the control signal is detected as being glued, a single exchange of the authorization and control signals sent on the relays is carried out immediately and then an inhibition of the alternation, the relay detected as being glued. remaining then the relay receiving the authorization signal during the entire running phase.
Le relais de commande n’assurant plus sa fonction au moins temporairement est judicieusement placé en tant que relais d’autorisation. Ceci permet d’éviter une commande intempestive du démarreur, c’est-à-dire une commande non voulue. Un relais de commande collé commanderait toujours l’alimentation du démarreur dès que le relais d’autorisation est fermé, ce qui est à éviter. Il est aussi à considérer que les commandes de relais sont générées par un logiciel présent dans une unité de contrôle commande du démarreur. Cette unité peut mal fonctionner, du fait d’un problème de l’électronique ou d’un raté dans le logiciel en produisant une commande non voulue. The control relay no longer performing its function at least temporarily is judiciously placed as an authorization relay. This avoids inadvertent control of the starter, that is to say an unwanted command. A glued control relay would always command starter power as soon as the relay authorization is closed, which is to be avoided. It is also to be considered that the relay commands are generated by software present in a control unit of the starter. This unit may malfunction due to a problem with the electronics or a failure in the software producing an unwanted command.
Avantageusement, il n’est pas envoyé un signal de détection d’un relais collé pendant le roulage courant. En effet, le relais détecté déficient de commande peut n’être que collé temporairement et se décoller par exemple dès qu’il est utilisé en relais d’autorisation. Ceci n’est pas limitatif et il peut aussi être procédé à l’envoi d’un signal de détection quand, par exemple, le relais est considéré comme vieux et susceptible d’être collé. Advantageously, a detection signal of a glued relay is not sent during the current running. Indeed, the deficient detected control relay may be only temporarily glued and peel off for example as soon as it is used in authorization relay. This is not limiting and it can also be sent to a detection signal when, for example, the relay is considered old and may be glued.
Avantageusement, à un roulage suivant commençant après un arrêt du roulage courant du véhicule automobile, au premier démarrage de ce roulage suivant, on envoie au relais ayant été détecté comme étant collé le signal de commande et à l’autre le signal d’autorisation, on mesure la tension de la ligne de commande à un point entre le relais le plus proche du démarreur et ce démarreur, entre le moment où le signal de commande se termine et le moment où le signal d’autorisation se termine, et si une tension non nulle est relevée entre ces deux moments, le collage du relais ayant été précédemment détecté comme collé est confirmé. Advantageously, at a next rolling beginning after stopping the current running of the motor vehicle, the first start of this next run, is sent to the relay having been detected as being glued the control signal and the other the authorization signal, the voltage of the control line is measured at a point between the nearest relay of the starter and this starter, between the moment when the control signal ends and the moment when the authorization signal ends, and if a voltage non-zero is recorded between these two moments, the collage of the relay having previously been detected as glued is confirmed.
Ceci représente la prise d’un deuxième diagnostic qui peut confirmer ou infirmer le premier diagnostic. Dans le premier cas, le relais de commande est considéré avec une forte probabilité comme étant collé définitivement et dans le deuxième cas il est déterminé que le collage n’était que temporaire. Il peut être mis en oeuvre plusieurs prises de diagnostic après plusieurs roulages. This represents the taking of a second diagnosis that can confirm or invalidate the first diagnosis. In the first case, the control relay is considered with a high probability as permanently bonded and in the second case it is determined that the bonding was only temporary. It can be implemented several diagnostics after several runs.
Avantageusement, quand le relais ayant reçu le signal de commande est confirmé comme étant collé, il est effectué immédiatement un seul échange des signaux d’autorisation et de commande envoyés sur les relais et ensuite une inhibition de l’alternance, le relais confirmé comme étant collé restant alors le relais recevant le signal d’autorisation pendant toute la phase de roulage. Advantageously, when the relay having received the control signal is confirmed as being glued, a single exchange of the authorization and control signals sent on the relays is carried out immediately and then an inhibition of the alternation, the relay confirmed as being glued then remaining the relay receiving the authorization signal throughout the rolling phase.
Avantageusement, il est envoyé un signal de confirmation du relais collé pendant le roulage. Advantageously, a confirmation signal of the glued relay is sent during the running.
Avantageusement, les fonctions présentes dans le véhicule automobile requérant des démarrages autres qu’un démarrage initial d’une phase de roulage sont au moins temporairement suspendues avec l’envoi du signal de confirmation d’un relais collé pendant le roulage. Advantageously, the functions present in the motor vehicle requiring start-ups other than an initial start of a driving phase are at least temporarily suspended with the sending of the confirmation signal of a relay stuck while driving.
L’invention concerne aussi un ensemble de démarrage de moteur à combustion interne comprenant : The invention also relates to an internal combustion engine starting assembly comprising:
-un démarreur équipé d’un moteur électrique alimenté par une ligne d’alimentation électrique,  a starter equipped with an electric motor powered by a power supply line,
-une ligne de commande de la ligne d’alimentation, la ligne de commande présentant deux relais disposés en série,  a control line of the supply line, the control line having two relays arranged in series,
-une unité de contrôle commande à laquelle est reliée la ligne de commande,  a command control unit to which is connected the command line,
-une ligne de mesure de tension de la ligne de commande reliant un point de cette ligne de commande situé entre le relais le plus proche du démarreur et ce démarreur à l’unité de commande, caractérisé en ce que l’unité de contrôle commande comprend les moyens d’acquisition, de traitement par instructions logicielles contenues dans une mémoire et de commande requis à la mise en oeuvre d’un procédé selon l’une quelconque des revendications précédentes.  a control line voltage measurement line connecting a point on this control line located between the relay closest to the starter and this starter to the control unit, characterized in that the control unit comprises acquisition means, processing by software instructions contained in a memory and control required to implement a method according to any one of the preceding claims.
La présente invention permet d’éviter des commandes non voulues par l’unité de contrôle commande du démarreur pour la mise en place d’une fonction spécifique nécessitant des arrêts et des redémarrages du moteur à combustion interne. De telles commandes non voulues représentent un risque chute de tension du réseau de bord à cause de l'appel de courant, voire des risques de casse du démarreur. The present invention makes it possible to avoid unwanted commands by the starter control unit for setting up a specific function requiring stopping and restarting of the internal combustion engine. Such unwanted commands represent a risk of voltage drop of the on-board system because of the current draw, or even the risk of starter breaking.
Avantageusement, le démarreur est un démarreur à bobines. Advantageously, the starter is a coil starter.
L’invention concerne enfin un véhicule automobile comprenant un moteur à combustion interne, caractérisé en ce qu’il comprend un tel ensemble de démarrage pour le moteur à combustion interne. The invention finally relates to a motor vehicle comprising an internal combustion engine, characterized in that it comprises such a starting assembly for the internal combustion engine.
Avantageusement, le véhicule automobile est un véhicule hybride, un véhicule équipé d’un système d’arrêt et de redémarrage automatiques du moteur à combustion interne et/ou un véhicule équipé d’un système de roue libre automatisé. Ces véhicules ont la particularité de présenter des arrêts et des redémarrages fréquents du moteur à combustion interne. Advantageously, the motor vehicle is a hybrid vehicle, a vehicle equipped with an automatic shutdown and restart system of the internal combustion engine and / or a vehicle equipped with an automated freewheel system. These vehicles have the particularity of presenting frequent stops and restarts of the internal combustion engine.
D’autres caractéristiques, buts et avantages de la présente invention apparaîtront à la lecture de la description détaillée qui va suivre et au regard des dessins annexés donnés à titre d’exemples non limitatifs et sur lesquels : - la figure 1 a est une représentation schématique d’un ensemble de démarrage de l’art antérieur, Other features, objects and advantages of the present invention will appear on reading the detailed description which follows and with reference to the appended drawings given by way of non-limiting examples and in which: FIG. 1a is a schematic representation of a starter assembly of the prior art,
- la figure 1 b est une représentation schématique d’un ensemble de démarrage comprenant le démarreur et son système de commande avec une unité de contrôle commande et une ligne de commande du démarreur intégrant des relais dits respectivement d’autorisation et de commande, un tel ensemble pouvant mettre en œuvre le procédé de l’invention,  FIG. 1b is a schematic representation of a starter assembly comprising the starter and its control system with a control unit and a control line of the starter incorporating said relays respectively for authorization and control, such together able to implement the method of the invention,
- les figures 2 à 4 illustrent le fonctionnement du procédé de l’invention.  - Figures 2 to 4 illustrate the operation of the method of the invention.
En référence à la figure 1 b, montrant un ensemble de démarrage pouvant mettre en oeuvre le procédé de l’invention, ce qui est qualifié d’ensemble de démarrage est le démarreur 10 même pris en combinaison avec son système de commande comprenant l’unité de contrôle commande 5 et la ligne de commande 1 1 avec des relais 1 , 2 de commande du démarreur. Une ligne spécifique de commande de chaque bobinage 1 a, 2a du relais 1 , 2 part de l’unité de contrôle commande 5 pour aboutir au relais associé. With reference to FIG. 1b, showing a starter assembly that can implement the method of the invention, what is called a starter assembly is the starter 10, taken in combination with its control system comprising the unit. control command 5 and the command line 1 1 with relay 1, 2 of the starter control. A specific line of control of each winding 1a, 2a of the relay 1, 2 part of the control unit 5 to reach the associated relay.
Le démarreur 10 de moteur à combustion interne, un tel moteur pouvant équiper un véhicule automobile, comprend un moteur électrique 7 alimenté par une ligne d’alimentation 12 électrique qui apporte la puissance électrique au moteur électrique 7. Le démarreur 10 est aussi relié à une ligne de commande 1 1. The starter 10 of an internal combustion engine, such a motor that can equip a motor vehicle, comprises an electric motor 7 powered by an electric power supply line 12 which brings the electric power to the electric motor 7. The starter 10 is also connected to a motor. command line 1 1.
La ligne de commande 1 1 présente deux relais 1 , 2, disposés en série, des moyens d’activation 6, 6a de moyens d’ouverture et de fermeture 8 de la ligne d’alimentation 12 et est reliée à une unité de contrôle commande 5 supervisant l’alimentation électrique de la ligne de commande 1 1 par commande des deux relais 1 , 2. La commande des relais de l’alimentation électrique de la ligne de commande 1 1 s’effectue par un module de commande 3 intégré dans l’unité de contrôle commande 5. The control line 1 1 has two relays 1, 2, arranged in series, activation means 6, 6a of opening and closing means 8 of the supply line 12 and is connected to a control unit 5 controlling the power supply of the control line 1 1 by controlling the two relays 1, 2. The control of the relays of the power supply of the control line 1 1 is effected by a control module 3 integrated in the control unit 5.
Les relais 1 , 2, comprennent chacun un contacteur 1 b, 2b pouvant être ouvert ou fermé selon l’alimentation électrique d’un bobinage 1 a, 2a, chacun étant reliée à une ligne spécifique de commande relais cmd 1 , cmd 2. The relays 1, 2, each comprise a contactor 1b, 2b can be open or closed according to the power supply of a winding 1a, 2a, each being connected to a specific relay control line cmd 1, cmd 2.
Les deux relais 1 , 2, commandés sont disposés en série dans la ligne de commande 11 délivrant une tension de commande, le moteur électrique 7 étant alimenté par sa ligne d’alimentation électrique 12 quand les deux relais 1 , 2, sont fermés suivant une commande de fermeture cmd 1 , cmd 2 respective. Ceci est fait par un ou deux solénoïdes 6, 6a à l’intérieur du démarreur 10 qui, quand alimentés électriquement, ferment un contacteur ou interrupteur 8 dans la ligne d’alimentation 12 du démarreur 10. The two relays 1, 2, controlled are arranged in series in the control line 11 delivering a control voltage, the electric motor 7 being powered by its power supply line 12 when the two relays 1, 2, are closed according to a closing command cmd 1, cmd 2 respective. This is done by one or two solenoids 6, 6a inside the starter 10 which, when electrically powered, close a contactor or switch 8 in the supply line 12 of the starter 10.
Sur figure 1 b encore la référence corn indique un signal de commande et la référence auto indique un signal d’autorisation, le signal d’autorisation, auto, commençant chronologiquement avant et se terminant après le signal de commande, corn. Le module de commande 3 comprend encore une bascule 3a qui permet d’envoyer le signal de commande, corn, vers la ligne de commande cmd1 et le signal d’autorisation, auto, vers la ligne de commande cmd2 ou l’inverse. In FIG. 1b again the reference corn indicates a control signal and the auto reference indicates an authorization signal, the authorization signal, auto, starting chronologically before and ending after the control signal, corn. The control module 3 further comprises a flip-flop 3a which makes it possible to send the control signal, corn, to the command line cmd1 and the authorization signal, auto, to the command line cmd2 or vice versa.
L’unité de contrôle commande 5 comprend les moyens d’acquisition, de traitement par instructions logicielles contenues dans une mémoire ainsi que les moyens de commande requis à la mise en œuvre du procédé de l’invention. A cet effet, l’unité de contrôle commande 5 comporte, un module 4 de diagnostic des relais comportant des moyens de mesure d’une tension dans la ligne de commande 1 1 et des moyens de détection d’un collage d’un des deux relais 1 , 2, par mesure de la tension dans le module 4 de diagnostic des relais présent dans l’unité de contrôle commande 5. The control unit 5 comprises the acquisition means, processing by software instructions contained in a memory and the control means required to implement the method of the invention. For this purpose, the control control unit 5 comprises a relay diagnosis module 4 comprising means for measuring a voltage in the control line 1 1 and means for detecting a bonding of one of the two relay 1, 2, by measuring the voltage in the relay diagnostic module 4 present in the control unit 5.
Une mesure de la tension de la ligne 1 1 de commande est prévue qui se fait en un point U de la ligne 1 1 de commande compris entre le relais 2, le plus proche du démarreur 10 et le démarreur 10. Ce point U de mesure est relié par une ligne de tension 13 partant de ce point de mesure et retournant au module 4 de diagnostic des relais de l’unité 5 de contrôle commande. A measurement of the voltage of the control line 1 1 is provided at a point U of the control line 1 1 between the relay 2, the closest to the starter 10 and the starter 10. This U point of measurement is connected by a voltage line 13 from this measurement point and returning to the relay diagnosis module 4 of the control unit 5.
Les figures 2 à 4 illustrent le fonctionnement du procédé de l’invention. Aux figures 2 à 4, la référence corn indique un signal de commande et la référence auto indique un signal d’autorisation, le signal d’autorisation, auto, commençant chronologiquement avant et se terminant après le signal de commande, corn. Figures 2 to 4 illustrate the operation of the method of the invention. In Figures 2 to 4, the reference corn indicates a control signal and the auto reference indicates an authorization signal, the authorization signal, auto, starting chronologically before and ending after the control signal, corn.
Les références cmd 1 et cmd 2 indique les signaux reçus par les bobinages 1 a et 2a des relais précédemment référencés 1 , et 2 via les lignes de commandes cmd1 , cmd2. La référence RT indique le retour de tension par la ligne 13 et 4a le retour de tension effectif. The references cmd 1 and cmd 2 indicate the signals received by the coils 1a and 2a of the relays previously referenced 1, and 2 via the command lines cmd1, cmd2. The reference RT indicates the voltage return via line 13 and 4a the actual voltage return.
La référence def indique un possible défaut successivement pour le relais référencé précédemment 1 , et le relais référencé précédemment 2. Ceci peut être fait à partir de plusieurs diagnostics successifs durant différents roulages. The def reference indicates a possible fault successively for the relay referenced previously 1, and the relay referenced previously 2. This can be done from several successive diagnoses during different runs.
La figure 2 montre un premier exemple pour lequel aucun défaut, autrement dit aucun collage de contacteur, n’est détecté pour les relais 1 et 2, l’exemple de ce pilotage ayant ici lieu au milieu d’un roulage. On entend par roulage, une session d’usage du véhicule compris entre une mise sous contact, par exemple par clé de contact ou par un bouton de démarrage, du véhicule et une coupure du contact par les mêmes moyens. A la mise sous contact, classiquement le ou les calculateurs du véhicule sont réveillés, le véhicule est désormais apte à fournir du couple moteur. A la coupure du contact, le ou les calculateurs sont mis en veille, le véhicule n’est plus apte à fournir du couple moteur. On considère un arrêt et un redémarrage effectué par un système d’arrêt et de redémarrage automatique, comme faisant partie d’un même roulage. FIG. 2 shows a first example for which no fault, in other words no contactor bonding, is detected for relays 1 and 2, the example of this control having here place in the middle of a rolling. By rolling means a session of use of the vehicle between a putting in contact, for example by ignition key or a start button, the vehicle and a cut-off contact by the same means. At ignition, typically the computer or computers of the vehicle are awake, the vehicle is now able to provide engine torque. When the ignition is switched off, the computer (s) are put to sleep, the vehicle is no longer able to provide engine torque. We consider a stop and a restart performed by a system of automatic stop and restart, as part of the same rolling.
Dans ce cas, il est prévu d’alterner, à chaque redémarrage, la commande d’autorisation est en alternance sur la commande cmd 1 du premier relais 1 ou sur la commande cmd 2 du deuxième relais 2. Il est effectué une mesure de la tension 4a en sortie U des deux relais via le retour de tension RT. In this case, it is planned to alternate, at each restart, the authorization command is alternately on the cmd command 1 of the first relay 1 or the cmd command 2 of the second relay 2. It is carried out a measurement of the voltage 4a at the output U of the two relays via the voltage feedback RT.
Ainsi, sur cette figure 2, au premier démarrage A, le signal d’autorisation, auto, est envoyé au relais 2, via la ligne de commande cmd 2 tandis que le signal de commande, corn, est envoyé au relais 1 , via la ligne de commande cmd 1 . Thus, in this FIG. 2, at the first start A, the authorization signal, auto, is sent to the relay 2, via the command line cmd 2 while the control signal, corn, is sent to the relay 1, via the cmd command line 1.
Lorsque l’on mesure la tension de la ligne de commande entre le relais le plus proche du démarreur, ici le relais 2, et ce démarreur 10, entre le moment où le signal de commande, corn, se termine (figure 2, instant t1 ) et le moment où le signal d’autorisation, auto, se termine (figure 2, instant t2), une tension nulle est relevée entre ces deux moments. On considère donc le relais ayant reçu le signal de commande, corn, comme non collé. When measuring the voltage of the control line between the relay closest to the starter, here relay 2, and this starter 10, between the moment when the control signal, corn, ends (Figure 2, time t1 ) and the moment when the authorization signal, auto, ends (FIG. 2, time t2), a zero voltage is raised between these two moments. We therefore consider the relay having received the control signal, corn, as not glued.
Au démarrage B suivant, on alterne l’envoi des signaux. Le signal d’autorisation, auto, est donc envoyé au relais 1 , via la ligne de commande cmd 1 , tandis que tandis que le signal de commande, corn, est envoyé au relais 2, via la ligne de commande cmd 2. La mesure de la tension de la ligne de commande entre le moment où le signal de commande, corn, se termine et le moment où le signal d’autorisation, auto, se termine, indique une tension nulle entre ces deux moments. On considère donc le relais ayant reçu le signal de commande, corn, comme non collé. At the next start B, the sending of the signals is alternated. The authorization signal, auto, is therefore sent to relay 1, via the command line cmd 1, while while the control signal, corn, is sent to relay 2, via the command line cmd 2. The measurement the voltage of the control line between the moment when the control signal, corn, ends and the moment when the authorization signal, auto, ends, indicates a zero voltage between these two moments. We therefore consider the relay having received the control signal, corn, as not glued.
Au démarrage C suivant, comme pour le premier démarrage A, le signal d’autorisation, auto, est envoyé au relais 2, via la ligne de commande cmd 2 tandis que le signal de commande, corn, est envoyé au relais 1 , via la ligne de commande cmd 1. At the start C following, as for the first start A, the authorization signal, auto, is sent to the relay 2, via the command line cmd 2 while the control signal, corn, is sent to the relay 1, via the cmd command line 1.
A chaque démarrage, (figure 2, graphe RT), la tension de sortie 4a est non nulle lorsque les deux relais sont fermés et est nulle dès l’ouverture de l’un des relais. Ainsi, tant que le relais ayant été commandé par le signal de commande, corn, n’est pas détecté comme étant collé, les relais 1 , 2, reçoivent alternativement à chaque démarrage le signal d’autorisation, auto et le signal de commande corn. At each start, (Figure 2, graph RT), the output voltage 4a is non-zero when the two relays are closed and is zero upon opening of one of the relays. Thus, as long as the relay having been controlled by the control signal, corn, is not detected as being stuck, the relays 1, 2, receive alternately at each start the authorization signal, auto and the control signal. .
La figure 3 illustre maintenant un cas de collage du premier relais 1 en se plaçant ici encore au milieu d’un roulage. Figure 3 now illustrates a case of bonding the first relay 1 by placing itself here again in the middle of a taxi.
Au premier démarrage A, le signal d’autorisation, auto, est d’abord envoyé au relais 2, via la ligne de commande cmd 2 tandis que le signal de commande, corn, est envoyé au relais 1 , via la ligne de commande cmd 1 . At first start A, the authorization signal, auto, is first sent to relay 2, via the command line cmd 2 while the control signal, corn, is sent to relay 1, via the command line cmd 1.
La mesure de la tension 4a de la ligne de commande au point U, montre qu’une tension non nulle est toujours présente alors que le signal de commande, corn, est terminé (figure 3, instant t3) et donc que le premier relais doit être normalement ouvert. Un collage du premier relais 1 est alors détecté. The measurement of the voltage 4a of the control line at point U, shows that a non-zero voltage is always present while the control signal, corn, is completed (FIG. 3, time t3) and therefore that the first relay must be normally open. A bonding of the first relay 1 is then detected.
Suite à cette détection de collage, il est alors immédiatement procédé à une inversion de commande. Autrement dit, via la commande de la bascule 3a, le premier relais 1 reçoit le signal d’autorisation, auto, via la commande cmd 1 et le deuxième relais 2 reçoit le signal de commande, corn, via la commande cmd 2. Cette inversion permet d’assurer le bon fonctionnement de l’ensemble de démarrage. A ce stade, le défaut du premier relais n’est pas confirmé. Pour les démarrages suivants, B, C, l’alternance des commandes est inhibée jusqu’à la fin du roulage. Following this detection of gluing, it is then immediately reversed order. In other words, via the control of the flip-flop 3a, the first relay 1 receives the authorization signal, auto, via the command cmd 1 and the second relay 2 receives the control signal, corn, via the command cmd 2. This inversion ensures the proper operation of the starter kit. At this point, the fault of the first relay is not confirmed. For the following starts, B, C, the alternation of the commands is inhibited until the end of the rolling.
Il est possible que les deux relais 1 , 2 soient collés. Par contre, ceci est relativement rare car les relais recevant le signal d’autorisation, auto, sont soumis à des pics de courant qui pourraient provoquer un décollement du relais si celui-ci était temporairement collé, ce qui est fréquemment le cas pour un relais non usé. It is possible that the two relays 1, 2 are glued. On the other hand, this is relatively rare because the relays receiving the authorization signal, auto, are subject to current peaks which could cause the relay to detach if it were temporarily glued, which is frequently the case for a relay. not worn.
Ainsi, quand le relais ayant reçu le signal de commande, corn, est détecté comme étant collé, il est effectué une seule alternance de signaux des relais 1 , 2, puis un blocage de cette alternance, le relais détecté comme étant collé restant alors le relais recevant le signal d’autorisation, auto, pendant tout le roulage courant. Thus, when the relay having received the control signal, corn, is detected as being glued, a single alternation of signals of the relays 1, 2 is carried out, then a blocking of this alternation, the relay detected as being glued remaining then the relay receiving the authorization signal, auto, during all the current running.
Prendre un relais collé comme relais recevant le signal d’autorisation, auto, est moins défavorable que de prendre un relais collé comme relais recevant le signal de commande corn. Cette modification d'alternance permet de stopper immédiatement l'alimentation du ou des solénoïdes 6, 6a. L'alternance va rester bloquée dans ce mode jusqu'à la fin du roulage. Il peut être envoyé ou ne pas être envoyé de signal de détection d’un relais collé pendant le roulage courant. Ce signal de détection peut servir à suspendre des fonctions du moteur qui sollicitent des arrêts fréquents du moteur donc des redémarrages fréquents, ce qui serait problématique avec un des relais collés, par micro-soudure de lamelles. Taking a relay stuck as a relay receiving the authorization signal, auto, is less unfavorable than taking a relay stuck as relay receiving the control signal corn. This change of alternation makes it possible to immediately stop feeding the solenoid (s) 6, 6a. The alternation will remain locked in this mode until the end of the drive. It can be sent or not be sent detection signal of a glued relay during the current running. This detection signal can be used to suspend engine functions that solicit frequent stops of the engine and frequent reboots, which would be problematic with one of the glued relays, micro-welding slats.
A un roulage suivant commençant après un arrêt du roulage courant du véhicule automobile au cours duquel un relais a été détecté comme collé, il peut être effectué une nouvelle détection pour confirmer l’état collé ou non du relais ayant été détecté collé. L’alternance est forcée pour que le relais ayant été détecté comme étant collé reçoive le signal de commande, corn, lors du premier démarrage du roulage suivant. At a next taxi starting after stopping the current running of the motor vehicle in which a relay has been detected as glued, it can be carried out a new detection to confirm the glued or unstuck state of the relay having been detected glued. The alternation is forced so that the relay having been detected as glued receives the control signal, corn, at the first start of the next taxi.
La figure 4 illustre une telle confirmation de collage du premier relais. FIG. 4 illustrates such confirmation of sticking of the first relay.
Au tout premier démarrage A du roulage suivant, l’alternance est forcée pour que le signal de commande, corn, soit envoyé sur le relais détecté comme collé, c’est-à-dire, ici le premier relais 1. At the very first start A of the next running, the alternation is forced so that the control signal, corn, is sent to the relay detected as glued, that is to say, here the first relay 1.
Lorsque le signal d’autorisation de pilotage, auto, commence, celui-ci ferme le deuxième relais 2. Dans le cas d’un tout premier démarrage, ceci se fait pratiquement simultanément. When the pilot authorization signal, auto, begins, it closes the second relay 2. In the case of a first start, this is done almost simultaneously.
Une fois le signal de commande, corn, terminé, (instant t4 sur la figure), la mesure de la tension 4a montre qu’une tension est toujours présente alors que le premier relais 1 devrait en principe être ouvert. La confirmation du collage du premier relais est donc faite. Il est alors procédé à l’inversion des commandes. Par la commande appropriée de la bascule 3a (figure 1 b), le premier relais reçoit le signal d’autorisation, auto, et le deuxième relais 2 reçoit désormais le signal de commande, corn. Once the control signal, corn, completed, (time t4 in the figure), the measurement of the voltage 4a shows that a voltage is still present while the first relay 1 should in principle be open. The confirmation of the collage of the first relay is done. It is then proceeded to the inversion of the orders. By the appropriate control of the flip-flop 3a (Figure 1b), the first relay receives the authorization signal, auto, and the second relay 2 now receives the control signal, corn.
Pour les redémarrages suivant B, C l’alternance des commandes reste inhibée jusqu’à la fin du roulage, ici avec le premier relais 1 restant avec le signal d’autorisation, auto. For reboots following B, C the alternation of commands remains inhibited until the end of the roll, here with the first relay 1 remaining with the authorization signal, auto.
Ainsi, quand le relais détecté comme collé lors du roulage précédent est confirmé comme étant collé, il est effectué une seule alternance des signaux relais d’autorisation, auto, et de commande, corn, sur les relais 1 , 2. Ensuite, cette alternance est inhibée, le relais confirmé comme étant collé recevant alors le signal d’autorisation, auto, pendant toute la suite du roulage. Thus, when the relay detected as glued during the previous run is confirmed as being glued, it is carried out a single alternation of the authorization, auto, and control relay signals, corn, on the relays 1, 2. Then, this alternation is inhibited, the relay confirmed as being glued then receiving the authorization signal, auto, throughout the rest of the rolling.
Comme l’état collé du relais confirmé comme tel peut être vraisemblablement permanent, il peut être envoyé un signal de confirmation du relais collé pendant le roulage. De même, les fonctions présentes dans le véhicule automobile requérant des démarrages et redémarrages autres qu’un démarrage initial peuvent être au moins temporairement suspendues avec l’envoi du signal de confirmation d’un relais collé pendant le roulage. As the bonded state of the relay confirmed as such can be presumably permanent, it can be sent a confirmation signal of the glued relay during the running. Similarly, the functions present in the motor vehicle requiring start-ups and restarts other than initial start-up may be at least temporarily suspended with the sending of the confirmation signal of a relay stuck during travel.
Le procédé de l’invention est particulièrement adapté dans le cas d’un démarreur dit à bobine, c’est-à-dire que stator et rotor du moteur électrique du démarreur sont équipés de bobines dont les inductances sont à l’origine d’étincelles de rupture à l’ouverture du relais recevant le signal de commande. The method of the invention is particularly suitable in the case of a starter said coil, that is to say, stator and rotor of the electric motor of the starter are equipped with coils whose inductors are at the origin of breaking sparks at the opening of the relay receiving the control signal.
Le véhicule automobile peut être un véhicule hybride, un véhicule équipé d’un système d’arrêt et de redémarrage automatiques du moteur à combustion interne et/ou un véhicule équipé d’un système de roue libre automatisé ou tout autre fonction impliquant des arrêts et redémarrages fréquents du moteur à combustion interne du véhicule automobile. Ces fonctions peuvent être combinées entre elles ou prises unitairement. The motor vehicle may be a hybrid vehicle, a vehicle equipped with an automatic stop and start system of the internal combustion engine and / or a vehicle equipped with an automated freewheel system or any other function involving stops and frequent restarts of the internal combustion engine of the motor vehicle. These functions can be combined together or individually.
Le mode de roulage roue libre automatisé est une fonction qui permet à un véhicule automobile lancé de continuer son roulage tout en découplant une transmission aux roues motrices du véhicule du moteur à combustion interne du véhicule. La transmission comprend classiquement une boîte de vitesses et son embrayage. Le moteur à combustion interne n’effectuant plus d’entraînement peut alors être mis au ralenti ou à l’arrêt. Cette fonction est activée lorsque la vitesse du véhicule est suffisante, par exemple pour un profil extra-urbain et notamment un profil de route descendante. The automated freewheel mode is a function that allows a motor vehicle launched to continue driving while decoupling a transmission to the drive wheels of the vehicle of the internal combustion engine of the vehicle. The transmission conventionally comprises a gearbox and its clutch. The internal combustion engine no longer performing drive can then be idle or stopped. This function is activated when the speed of the vehicle is sufficient, for example for an extra-urban profile and in particular a descending road profile.

Claims

REVENDICATIONS
1. Procédé de détection de collage d’au moins un de deux relais (1 , 2) électriques disposés en série dans une ligne de commande (1 1 ) délivrant une tension de commande pour un démarreur (10) de moteur à combustion interne équipant un véhicule automobile, un moteur électrique (7) du démarreur (10) étant alimenté quand les deux relais (1 , 2) sont fermés, chacun par un signal distinct, un des deux signaux étant un signal dit d’autorisation (auto) commençant avant et se terminant après l’autre signal, dit signal de commande (corn), caractérisé en ce qu’on mesure la tension de la ligne (1 1 ) de commande à un point entre le relais (2) le plus proche du démarreur (10) et ce démarreur (10), entre le moment où le signal de commande (corn) se termine et le moment où le signal d’autorisation (auto) se termine, et si une tension non nulle est relevée entre ces deux moments, on considère le relais ayant reçu le signal de commande (corn) comme collé. 1. A method for detecting bonding of at least one of two electrical relays (1, 2) arranged in series in a control line (1 1) delivering a control voltage for a starter (10) of an internal combustion engine fitted with a motor vehicle, an electric motor (7) of the starter (10) being energized when the two relays (1, 2) are closed, each by a separate signal, one of the two signals being a so-called authorization signal (auto) starting before and after the other signal, said control signal (corn), characterized in that the voltage of the control line (1 1) is measured at a point between the relay (2) closest to the starter (10) and this starter (10), between the moment when the control signal (corn) ends and the moment when the authorization signal (auto) terminates, and if a non-zero voltage is detected between these two moments , we consider the relay that received the control signal (corn) as pasted.
2. Procédé selon la revendication 1 , dans lequel, tant qu’aucun relais n’est pas détecté comme étant collé, les signaux d’autorisation (auto) et de commande (corn) sont alternés à chaque démarrage de moteur à combustion interne ayant lieu au cours d’une même phase courante de roulage du véhicule. 2. Method according to claim 1, in which, as long as no relay is not detected as being bonded, the authorization (auto) and control (corn) signals are alternated at each start of an internal combustion engine having place during the same running phase of the vehicle.
3. Procédé selon la revendication 2, dans lequel, quand le relais ayant reçu le signal de commande (corn) est détecté comme étant collé, il est effectué immédiatement un seul échange des signaux d’autorisation (auto) et de commande (corn) envoyés sur les relais et ensuite une inhibition de l’alternance, le relais détecté comme étant collé restant alors le relais recevant le signal d’autorisation (auto) pendant toute la phase courante de roulage. 3. Method according to claim 2, wherein, when the relay having received the control signal (corn) is detected as being glued, it is carried out immediately a single exchange of the authorization (auto) and control (corn) signals. sent on the relays and then an inhibition of the alternation, the relay detected as being glued then remaining the relay receiving the authorization signal (auto) during all the current phase of rolling.
4. Procédé selon l’une quelconque des revendications 2 ou 3, dans lequel, à un roulage suivant commençant après un arrêt du roulage courant du véhicule automobile, au premier démarrage de ce roulage suivant, on envoie au relais ayant été détecté comme étant collé le signal de commande (corn) et à l’autre le signal d’autorisation (auto), on mesure la tension de la ligne (1 1 ) de commande entre le relais (2) le plus proche du démarreur (10) et ce démarreur (10), entre le moment où le signal de commande (corn) se termine et le moment où le signal d’autorisation (auto) se termine, et si une tension non nulle est relevée entre ces deux moments, le collage du relais ayant été précédemment détecté comme collé est confirmé. 4. Method according to any one of claims 2 or 3, wherein, at a next run beginning after stopping the current running of the motor vehicle, the first start of this next run, is sent to the relay having been detected as being glued the control signal (corn) and to the other the authorization signal (auto), the voltage of the control line (1 1) between the relay (2) closest to the starter (10) is measured. starter (10), between the moment when the control signal (corn) ends and the moment when the authorization signal (auto) terminates, and if a non-zero voltage is detected between these two moments, the sticking of the relay having been previously detected as pasted is confirmed.
5. Procédé selon la revendication 4, dans lequel, quand le relais ayant reçu le signal de commande (corn) est confirmé comme étant collé, il est effectué immédiatement un seul échange des signaux d’autorisation (auto) et de commande (corn) envoyés sur les relais et ensuite une inhibition de l’alternance, le relais confirmé comme étant collé restant alors le relais recevant le signal d’autorisation (auto) pendant toute la phase de roulage. 5. Method according to claim 4, wherein, when the relay having received the control signal (corn) is confirmed as being glued, it is carried out immediately a single exchange of the authorization (auto) and control (corn) signals. sent on the relays and then an inhibition of alternation, the relay confirmed as being glued then remaining the relay receiving the authorization signal (auto) throughout the rolling phase.
6. Procédé selon l’une quelconque des revendications 4 ou 5, dans lequel il est envoyé un signal de confirmation du relais collé pendant le roulage. 6. Method according to any one of claims 4 or 5, wherein it is sent a confirmation signal relay glued during taxiing.
7. Procédé selon la revendication 6, dans lequel les fonctions présentes dans le véhicule automobile requérant des démarrages autres qu’un démarrage initial d’une phase de roulage sont au moins temporairement suspendues avec l’envoi du signal de confirmation d’un relais collé pendant le roulage. 7. The method of claim 6, wherein the functions present in the motor vehicle requiring start other than an initial start of a driving phase are at least temporarily suspended with the sending of the confirmation signal of a glued relay while driving.
8. Ensemble de démarrage de moteur à combustion interne comprenant : An internal combustion engine starting assembly comprising:
-un démarreur (10) équipé d’un moteur électrique (7) alimenté par une ligne d’alimentation (12) électrique,  a starter (10) equipped with an electric motor (7) powered by an electric power supply line (12),
-une ligne de commande (1 1 ) de la ligne d’alimentation, la ligne de commande (1 1 ) présentant deux relais (1 , 2) disposés en série,  a control line (1 1) of the supply line, the control line (1 1) having two relays (1, 2) arranged in series,
-une unité de contrôle commande (5) à laquelle est reliée la ligne de commande (1 1 ), -une ligne (13) de mesure de tension de la ligne de commande (1 1 ) reliant un point (U) de cette ligne de commande (1 1 ) situé entre le relais (2) le plus proche du démarreur (10) et ce démarreur (10) à l’unité de commande (5), caractérisé en ce que l’unité de contrôle commande (5) comprend les moyens d’acquisition, de traitement par instructions logicielles contenues dans une mémoire et de commande requis à la mise en oeuvre d’un procédé selon l’une quelconque des revendications précédentes.  a control command unit (5) to which is connected the control line (1 1), a line (13) for measuring the voltage of the control line (1 1) connecting a point (U) of this line control unit (1 1) located between the relay (2) closest to the starter (10) and this starter (10) to the control unit (5), characterized in that the control unit (5) comprises acquisition means, processing by software instructions contained in a memory and control required to implement a method according to any one of the preceding claims.
9. Véhicule automobile comprenant un moteur à combustion interne, caractérisé en ce qu’il comprend un ensemble de démarrage (10) selon la revendication 8 pour le moteur à combustion interne. 9. A motor vehicle comprising an internal combustion engine, characterized in that it comprises a starter assembly (10) according to claim 8 for the internal combustion engine.
10. Véhicule automobile selon la revendication 9, lequel est un véhicule hybride, un véhicule équipé d’un système d’arrêt et de redémarrage automatiques du moteur à combustion interne et/ou un véhicule équipé d’un système de roue libre automatisé. 10. Motor vehicle according to claim 9, which is a hybrid vehicle, a vehicle equipped with an automatic stop and start system of the internal combustion engine and / or a vehicle equipped with an automated freewheel system.
PCT/FR2018/052537 2017-11-29 2018-10-12 Method for detecting the sticking of one of two relays connected in series in a control line for a motor vehicle starter WO2019106245A1 (en)

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FR1761337A FR3074299B1 (en) 2017-11-29 2017-11-29 BONDING DETECTION PROCESS OF ONE OF TWO RELAYS ARRANGED IN SERIES IN A CONTROL LINE OF A MOTOR VEHICLE STARTER

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EP2199594B1 (en) 2008-12-18 2013-07-24 Iveco S.p.A. Engine starting device for the stop and start function in a vehicle and method for the use of the device
US20140032037A1 (en) * 2012-07-27 2014-01-30 Chrysler Group Llc Method of diagnosing a starter relay failure using synchronized state machine
US20170106765A1 (en) * 2015-10-16 2017-04-20 Hyundai Motor Company Method and system for detecting fusion of relay
FR3058795A1 (en) * 2016-11-14 2018-05-18 Peugeot Citroen Automobiles Sa METHOD FOR DETECTING THE BONDING OF ONE OF TWO RELAYS PLACED IN SERIES IN A CONTROL LINE OF A MOTOR VEHICLE STARTER

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2199594B1 (en) 2008-12-18 2013-07-24 Iveco S.p.A. Engine starting device for the stop and start function in a vehicle and method for the use of the device
US20140032037A1 (en) * 2012-07-27 2014-01-30 Chrysler Group Llc Method of diagnosing a starter relay failure using synchronized state machine
US20170106765A1 (en) * 2015-10-16 2017-04-20 Hyundai Motor Company Method and system for detecting fusion of relay
FR3058795A1 (en) * 2016-11-14 2018-05-18 Peugeot Citroen Automobiles Sa METHOD FOR DETECTING THE BONDING OF ONE OF TWO RELAYS PLACED IN SERIES IN A CONTROL LINE OF A MOTOR VEHICLE STARTER

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