EP1036936A1 - Monitoring system for starter device - Google Patents

Monitoring system for starter device Download PDF

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Publication number
EP1036936A1
EP1036936A1 EP00102370A EP00102370A EP1036936A1 EP 1036936 A1 EP1036936 A1 EP 1036936A1 EP 00102370 A EP00102370 A EP 00102370A EP 00102370 A EP00102370 A EP 00102370A EP 1036936 A1 EP1036936 A1 EP 1036936A1
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EP
European Patent Office
Prior art keywords
inverter
signal
vehicle
activated
electrical machine
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP00102370A
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German (de)
French (fr)
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EP1036936B1 (en
Inventor
Steffen Lutz
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Bayerische Motoren Werke AG
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Bayerische Motoren Werke AG
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Publication of EP1036936A1 publication Critical patent/EP1036936A1/en
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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
    • F02N11/10—Safety devices
    • F02N11/101—Safety devices for preventing engine starter actuation or engagement
    • F02N11/105—Safety devices for preventing engine starter actuation or engagement when the engine is already running
    • 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
    • F02N11/04—Starting of engines by means of electric motors the motors being associated with current generators
    • 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
    • F02N11/0862—Circuits or control means specially adapted for starting of engines characterised by the electrical power supply means, e.g. battery
    • F02N11/0866—Circuits or control means specially adapted for starting of engines characterised by the electrical power supply means, e.g. battery comprising several power sources, e.g. battery and capacitor or two batteries
    • 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
    • F02N2011/0881—Components of the circuit not provided for by previous groups
    • F02N2011/0885—Capacitors, e.g. for additional power supply
    • 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
    • F02N2011/0881—Components of the circuit not provided for by previous groups
    • F02N2011/0888—DC/DC converters
    • 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
    • F02N2011/0881—Components of the circuit not provided for by previous groups
    • F02N2011/0896—Inverters for electric machines, e.g. starter-generators
    • 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

Definitions

  • the invention relates to a device for monitoring a starting device according to the preamble of claim 1.
  • the start request of the Driver usually by closing an electrical contact, for example a switch communicated to the starting device.
  • an electrical contact for example a switch communicated to the starting device.
  • a device known that only enable starting if, for example, the Clutch pedal is depressed In this context and further The environment is referred to WO 94/15808 and JP 09042005 A. In these Publications describe devices that are unintended Prevent driving away by only starting certain engines Vehicle operating conditions, such as operating a clutch pedal, allow.
  • the present invention is in contrast to a newer type of starting devices aimed for motor vehicles.
  • electrical machines are used both as starters and operated as a generator.
  • This electrical Machines are connected via an inverter to a power grid connected, to which consumers and batteries are connected are.
  • An electrical valve train for example, can serve as a consumer be provided, which is operated reliably during the starting process must become. With such an electric valve train, but also with others Consumers must have sufficient electrical energy already at Be ensured.
  • a control unit used which at certain time intervals not even with one vehicle in operation can be activated and the electrical state of the electrical system checked. With such an automatic activation the control unit must be completely excluded, that the electrical machine also serving as the starter is unintentionally is operated and, for example, with the gear engaged, the vehicle in Movement sets.
  • the object of the present invention is therefore a device of the beginning mentioned type to the extent that such an unintentional Movement is excluded.
  • an additional control is provided that the inverter activated or deactivated depending on vehicle operating information.
  • the link between the vehicle operating information and the The inverter can be enabled or disabled using software. Most security, however, brings a hardware circuit in the form of a Driver.
  • the inverter which is the connection between the vehicle electrical system and the electrical machine, is only activated, if the vehicle operating information permits.
  • a speed signal can preferably be used as vehicle operating information of the engine and a clutch actuation signal can be used.
  • the additional control is designed such that the inverter is only set to active when either the clutch is actuated or the speed exceeds a certain value. With this configuration it is ensured that the electrical Only start the machine when the clutch pedal is depressed can. In addition, continued operation of the electrical machine is also without Clutch actuation possible when a certain engine speed has been reached or exceeded.
  • Fig. 1 is a starting device with a control unit in a schematic manner 10, which shows an inverter 14, a DC / DC converter 22, a central unit 30 and an additional controller 40.
  • the inverter 14 is connected to an asynchronous motor 12 which can be operated both as a starter and as a generator.
  • the of the asynchronous machine 12 in the generator mode current supplied or of this current required in starter mode is supplied via the inverter 14 converted into a direct current and fed into an electrical system or taken from this.
  • the vehicle electrical system consists of a power supply unit 16 with a Mains voltage of 42 V, which is connected directly to a 36 V battery 20 as well as to a Consumers are concerned.
  • this consumer is an electrical one Valve train 18.
  • a 12 V electrical system 24 is provided, that of the 42 V electrical system is supplied via the DC / DC converter 22. There are 24 on the 12 V electrical system in the present case a 12 V battery 26 and other consumers 28 are connected.
  • the central unit 30 and the electronic unit are connected via a local CAN bus 34 Valve train 18 connected to digital engine electronics DME 36.
  • the digital engine electronics 36 is also with a further CAN bus system in connection and also receives signals from terminal 50 and one Diagnostic management.
  • the central processing unit 30 receives its commands from the digital motor electronics 36. In addition, information is read in via the CAN bus 32. Further input information of the central processing unit 30 is a wake-up signal W, a charge signal L, a voltage signal from the 36 V battery U 36V and a temperature signal from the 36 V battery T 36V .
  • the central controller 30 acts on the inverter 14, more precisely one Driver circuit 15 of the inverter 14 and causes one accordingly operation of the asynchronous machine as required by the input variables 12th
  • the central control 30 is not activated even in the case of one temporarily activated (woken) vehicle in operation.
  • the wake-up signal can also be within the central controller 30 to be generated.
  • the central processing unit 30 now also checks when the computer is switched off Vehicle the 42 V vehicle electrical system voltage at certain intervals, to recognize whether the power / voltage required for a starting case can also be provided by the 36 V battery 20 can. If this is not the case, the 36 V battery 20 becomes the 12 V battery 26 loaded via the DC / DC converter 22.
  • a separate controller 40 is provided, which as the input signal Speed signal n of the engine and a clutch signal KS receives.
  • the controller 40 generates a signal and these input variables sends this to the driver circuit 15 of the inverter 14, which thereby being put into an active or a deactivated state.
  • FIG Block diagram shown in Fig. 2.
  • this is Speed signal n of the motor into a frequency-voltage converter Voltage converted.
  • This voltage is applied to a threshold comparator 52 applied, which then generates a signal when the voltage U exceeds a predetermined value.
  • the resulting signal is converted into a 0/1 information in a unit 54 and an AND Gate 58 passed.
  • the unit 56 converts in accordance with the actuation of the Coupling switch KS the signal applied to it also in a logical 0/1 signal and also passes this on to the AND gate 58.
  • the electrical machine can be operated upon automatic activation of the central processing unit 30 effectively avoided by the alarm signal W.
  • An actuation of the asynchronous machine 12 from a standing position can thus only be activated when the Coupling switch done. Only when the engine speed then a certain The asynchronous machine can also exceed the threshold value continue to be operated without actuating the clutch switch.

Abstract

The device has an electrical machine (12) acting as a starter and generator, an inverter (14) for converting the current produced or required by the machine and a control unit (30) for controlling the operation of the unit containing the machine and inverter depending on input signals. The control unit can be activated at intervals when the vehicle is not being operated. An additional controller (40) activates or deactivates the inverter depending on motor vehicle operating information.

Description

Die Erfindung betrifft eine Vorrichtung zur Überwachung einer Starteinrichtung gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a device for monitoring a starting device according to the preamble of claim 1.

Bei Starteinrichtungen für Verbrennungsmotoren wird der Startwunsch des Fahrers in der Regel über das Schließen eines elektrischen Kontaktes, beispielsweise einem Schalter, der Starteinrichtung mitgeteilt. Zur Vermeidung einer unbeabsichtigten Bewegung des Fahrzeugs sind bereits Vorrichtungen bekannt, die ein Starten nur dann ermöglichen, wenn beispielsweise das Kupplungspedal gedrückt ist. In diesem Zusammenhang und zum weiteren Umfeld wird auf die WO 94/15808 und JP 09042005 A hingewiesen. In diesen Veröffentlichungen sind Vorrichtungen beschrieben, die ein unbeabsichtigtes Wegfahren verhindern, indem sie einen Motorstart nur bei bestimmten Fahrzeugbetriebsbedingungen, wie dem Betätigen eines Kupplungspedals, erlauben.In the case of starting devices for internal combustion engines, the start request of the Driver usually by closing an electrical contact, for example a switch communicated to the starting device. To avoid unintentional movement of the vehicle is already a device known that only enable starting if, for example, the Clutch pedal is depressed. In this context and further The environment is referred to WO 94/15808 and JP 09042005 A. In these Publications describe devices that are unintended Prevent driving away by only starting certain engines Vehicle operating conditions, such as operating a clutch pedal, allow.

Die vorliegende Erfindung ist demgegenüber auf eine neuere Art von Starteinrichtungen für Kraftfahrzeuge gerichtet. Bei diesen Starteinrichtungen werden elektrische Maschinen verwendet, die sowohl als Anlasser als auch als Generator betrieben werden. Als Beispiel sei auf die mittlerweile bekannten Kurbelwellen-Starter-Generatoren hingewiesen. Diese elektrischen Maschinen sind über einen Wechselrichter mit einem Stromversorgungsnetz verbunden, an welchem wiederum Verbraucher und Batterien angeschlossen sind. Als Verbraucher kann beispielsweise ein elektrischer Ventiltrieb vorgesehen sein, der bereits beim Startvorgang funktionssicher betrieben werden muß. Bei einem solchen elektrischen Ventiltrieb, aber auch bei anderen Verbrauchern, muß eine ausreichende elektrische Energie bereits beim Startvorgang sichergestellt werden. Zu diesem Zweck wird eine Steuereinheit verwendet, die in bestimmten zeitlichen Abständen auch bei einem nicht in Betrieb befindlichen Fahrzeug aktivierbar ist und den elektrischen Zustand des Bordnetzes überprüft. Bei einer solchen automatisch erfolgenden Aktivierung der Steuereinheit muß es jedoch vollständig ausgeschlossen sein, daß die auch als Anlasser dienende elektrische Maschine unbeabsichtigt betrieben wird und beispielsweise bei eingelegten Gang das Fahrzeug in Bewegung setzt.The present invention is in contrast to a newer type of starting devices aimed for motor vehicles. With these starting devices electrical machines are used both as starters and operated as a generator. As an example, let's look at those that are now known Crankshaft starter generators noted. This electrical Machines are connected via an inverter to a power grid connected, to which consumers and batteries are connected are. An electrical valve train, for example, can serve as a consumer be provided, which is operated reliably during the starting process must become. With such an electric valve train, but also with others Consumers must have sufficient electrical energy already at Be ensured. For this purpose, a control unit used, which at certain time intervals not even with one vehicle in operation can be activated and the electrical state of the electrical system checked. With such an automatic activation the control unit must be completely excluded, that the electrical machine also serving as the starter is unintentionally is operated and, for example, with the gear engaged, the vehicle in Movement sets.

Aufgabe der vorliegenden Erfindung ist es daher, eine Vorrichtung der eingangs genannten Art dahingehend weiterzubilden, daß eine solche unbeabsichtigte Bewegung ausgeschlossen ist.The object of the present invention is therefore a device of the beginning mentioned type to the extent that such an unintentional Movement is excluded.

Diese Aufgabe wird durch die im Anspruch 1 genannten Merkmale gelöst.This object is achieved by the features mentioned in claim 1.

Demgemäß ist eine zusätzliche Steuerung vorgesehen, die den Wechselrichter in Abhängigkeit von Fahrzeugbetriebsinformationen aktiviert oder deaktiviert. Die Verknüpfung der Fahrzeugbetriebsinformationen sowie die Freigabe oder Sperrung des Wechselrichters kann über Software erfolgen. Die meiste Sicherheit bringt jedoch eine Hardware-Schaltung in Form eines Treibers. Der Wechselrichter, welcher die Verbindung zwischen dem Bordnetz und der elektrischen Maschine herstellt, wird also nur dann aktiviert, wenn dies die Fahrzeugbetriebsinformationen zulassen. Accordingly, an additional control is provided that the inverter activated or deactivated depending on vehicle operating information. The link between the vehicle operating information and the The inverter can be enabled or disabled using software. Most security, however, brings a hardware circuit in the form of a Driver. The inverter, which is the connection between the vehicle electrical system and the electrical machine, is only activated, if the vehicle operating information permits.

Als Fahrzeugbetriebsinformationen können vorzugsweise ein Drehzahlsignal des Motors und ein Kupplungsbetätigungssignal verwendet werden. In diesem Falle ist die zusätzliche Steuerung derart ausgebildet, daß der Wechselrichter nur dann auf aktiv gesetzt ist, wenn entweder die Kupplung betätigt oder die Drehzahl einen bestimmten Wert überschreitet. Mit dieser Ausgestaltung ist sichergestellt, daß die als Anlasser tätig werdende elektrische Maschine nur bei einem durchgetretenem Kupplungspedal gestartet werden kann. Zudem ist ein Weiterbetrieb der elektrischen Maschine auch ohne Kupplungsbetätigung möglich, wenn eine bestimmte Drehzahl des Motors erreicht oder überschritten ist.A speed signal can preferably be used as vehicle operating information of the engine and a clutch actuation signal can be used. In this Case, the additional control is designed such that the inverter is only set to active when either the clutch is actuated or the speed exceeds a certain value. With this configuration it is ensured that the electrical Only start the machine when the clutch pedal is depressed can. In addition, continued operation of the electrical machine is also without Clutch actuation possible when a certain engine speed has been reached or exceeded.

Natürlich können anstatt des Kupplungsbetätigungssignals auch andere Signale verwendet werden, beispielsweise ein P/N-Signal eines automatischen Getriebes. Das Signal muß lediglich sicherstellen, daß der Antriebsstrang des Fahrzeugs unterbrochen ist, so daß beim Starten eine Fortbewegung des Fahrzeugs in jedem Fall unterbunden wird.Of course, other signals can be used instead of the clutch actuation signal are used, for example a P / N signal of an automatic Gearbox. The signal just needs to ensure that the powertrain the vehicle is interrupted, so that when starting a locomotion of the vehicle is prevented in any case.

Eine einfache Ausführungsform der Erfindung wird mit Bezug auf die beiliegenden Zeichnungen erläutert. Die Zeichnungen zeigen in

Fig. 1
ein schematisches Blockdiagramm einer Starteinrichtung mit Verbrauchern und
Fig. 2
eine konkrete Ausgestaltung einer zusätzlichen Steuerung aus Fig. 1 in Form eines schematischen Blockdiagramms.
A simple embodiment of the invention will be explained with reference to the accompanying drawings. The drawings show in
Fig. 1
a schematic block diagram of a starting device with consumers and
Fig. 2
a concrete embodiment of an additional control from FIG. 1 in the form of a schematic block diagram.

In Fig. 1 ist in schematischer Weise eine Starteinrichtung mit einer Steuereinheit 10 dargestellt, welche einen Wechselrichter 14, einen DC/DC-Wandler 22, eine Zentraleinheit 30 und eine zusätzliche Steuerung 40 umfaßt. Der Wechselrichter 14 ist mit einem Asynchronmotor 12 verbunden, der sowohl als Anlasser als auch als Generator betrieben werden kann. Der von der Asynchronmaschine 12 im Generatorbetrieb gelieferte Strom oder der von dieser im Anlasserbetrieb benötigte Strom wird über den Wechselrichter 14 in einen Gleichstrom umgewandelt und in ein Bordnetz eingespeist bzw. von diesem entnommen.In Fig. 1 is a starting device with a control unit in a schematic manner 10, which shows an inverter 14, a DC / DC converter 22, a central unit 30 and an additional controller 40. The inverter 14 is connected to an asynchronous motor 12 which can be operated both as a starter and as a generator. The of the asynchronous machine 12 in the generator mode current supplied or of this current required in starter mode is supplied via the inverter 14 converted into a direct current and fed into an electrical system or taken from this.

Das Bordnetz besteht im vorliegenden Fall aus einem Netzteil 16 mit einer Netzspannung von 42 V, die direkt an einer 36 V-Batterie 20 sowie an einem Verbraucher anliegt. Dieser Verbraucher ist im vorliegenden Fall ein elektrischer Ventiltrieb 18.In the present case, the vehicle electrical system consists of a power supply unit 16 with a Mains voltage of 42 V, which is connected directly to a 36 V battery 20 as well as to a Consumers are concerned. In the present case, this consumer is an electrical one Valve train 18.

Zusätzlich ist ein 12 V-Bordnetz 24 vorgesehen, das von dem 42 V-Bordnetz über den DC/DC-Wandler 22 versorgt wird. An dem 12 V-Bordnetz 24 sind vorliegend eine 12 V-Batterie 26 sowie andere Verbraucher 28 angeschlossen.In addition, a 12 V electrical system 24 is provided, that of the 42 V electrical system is supplied via the DC / DC converter 22. There are 24 on the 12 V electrical system in the present case a 12 V battery 26 and other consumers 28 are connected.

Über einen lokalen CAN-Bus 34 ist die zentrale Einheit 30 und der elektronische Ventiltrieb 18 mit einer digitalen Motorelektronik DME 36 verbunden. Die digitale Motorelektronik 36 ist ferner mit einem weiteren CAN-Bussystem in Verbindung und erhält ferner Signale von der Klemme 50 sowie von einer Diagnoseleitung.The central unit 30 and the electronic unit are connected via a local CAN bus 34 Valve train 18 connected to digital engine electronics DME 36. The digital engine electronics 36 is also with a further CAN bus system in connection and also receives signals from terminal 50 and one Diagnostic management.

Die zentrale Recheneinheit 30 bekommt von der digitalen Motorelektronik 36 ihre Befehle. Zusätzlich werden Informationen über den CAN-Bus 32 eingelesen. Weitere Eingangsinformationen der zentralen Recheneinheit 30 sind ein Wecksignal W, ein Ladesignal L, ein Spannungssignal der 36 V-Batterie U36V sowie ein Temperatursignal von der 36 V-Batterie T36V.The central processing unit 30 receives its commands from the digital motor electronics 36. In addition, information is read in via the CAN bus 32. Further input information of the central processing unit 30 is a wake-up signal W, a charge signal L, a voltage signal from the 36 V battery U 36V and a temperature signal from the 36 V battery T 36V .

Die zentrale Steuerung 30 beaufschlagt den Wechselrichter 14, genauer eine Treiberschaltung 15 des Wechselrichters 14 und veranlaßt einen entsprechend den Eingangsgrößen geforderten Betrieb der Asynchronmaschine 12.The central controller 30 acts on the inverter 14, more precisely one Driver circuit 15 of the inverter 14 and causes one accordingly operation of the asynchronous machine as required by the input variables 12th

Über das Wecksignal W wird die zentrale Steuerung 30 auch bei einem nicht in Betrieb befindlichem Fahrzeug zeitweise automatisch aktiviert (geweckt).Via the wake-up signal W, the central control 30 is not activated even in the case of one temporarily activated (woken) vehicle in operation.

Alternativ kann das Wecksignal auch innerhalb der zentralen Steuerung 30 generiert werden.Alternatively, the wake-up signal can also be within the central controller 30 to be generated.

Mit dem Wecksignal hat es folgende Bewandtnis: Bereits beim Start müssen die elektrischen Ventiltriebe funktionssicher mit elektrischem Strom versorgt werden. Zu diesem Zweck muß bereits beim Start die geforderte Leistung verfügbar sein. Die zentrale Recheneinheit 30 überprüft nun auch bei abgestelltem Fahrzeug in bestimmten zeitlichen Abständen die 42 V Bordnetzspannung, um zu erkennen, ob die für einen Startfall benötigte Leistung/Spannung von der 36 V-Batterie 20 auch zur Verfügung gestellt werden kann. Ist dies nicht der Fall, so wird die 36 V-Batterie 20 aus der 12 V-Batterie 26 über den DC/DC-Wandler 22 geladen.With the wake-up signal it has the following relevance: Already at the start the electrical valve trains are reliably supplied with electrical current become. For this purpose, the required performance must be available right from the start be available. The central processing unit 30 now also checks when the computer is switched off Vehicle the 42 V vehicle electrical system voltage at certain intervals, to recognize whether the power / voltage required for a starting case can also be provided by the 36 V battery 20 can. If this is not the case, the 36 V battery 20 becomes the 12 V battery 26 loaded via the DC / DC converter 22.

Bei einem solchen Weckvorgang muß jedoch auf jeden Fall verhindert werden, daß sich das Fahrzeug durch einen Betrieb der Asynchronmaschine 12 im Anlassermodus und bei eingelegtem Gang bewegt. Um dies zu verhindern, ist eine separate Steuerung 40 vorgesehen, die als Eingangssignal das Drehzahlsignal n des Motors und ein Kupplungssignal KS erhält. Entsprechend diesen Eingangsgrößen generiert die Steuerung 40 ein Signal und schickt dieses an die Treiberschaltung 15 des Wechselrichters 14, welcher dadurch in einen aktiven oder einen deaktiven Zustand versetzt wird.In such a wake-up process, however, it must be prevented in any case that the vehicle is in operation of the asynchronous machine 12 moved in starter mode and in gear. To prevent this, a separate controller 40 is provided, which as the input signal Speed signal n of the engine and a clutch signal KS receives. Corresponding The controller 40 generates a signal and these input variables sends this to the driver circuit 15 of the inverter 14, which thereby being put into an active or a deactivated state.

Eine konkrete Ausführungsform der zusätzlichen Steuerung 40 ist in dem Blockdiagramm in Fig. 2 dargestellt. In einem Ast dieser Steuerung wird das Drehzahlsignal n des Motors über einen Frequenz-Spannungswandler in eine Spannung umgewandelt. Diese Spannung wird an einen Schwellwertkomperator 52 angelegt, der dann ein Signal erzeugt, wenn die Spannung U einen vorgegebenen Wert überschreitet. Das daraus resultierende Signal wird in einer Einheit 54 in eine 0/1 -Information umgewandelt und an ein UND -Gatter 58 weitergegeben.A specific embodiment of the additional control 40 is shown in FIG Block diagram shown in Fig. 2. In a branch of this control, this is Speed signal n of the motor into a frequency-voltage converter Voltage converted. This voltage is applied to a threshold comparator 52 applied, which then generates a signal when the voltage U exceeds a predetermined value. The resulting signal is converted into a 0/1 information in a unit 54 and an AND Gate 58 passed.

Im zweiten Ast wandelt die Einheit 56 entsprechend der Betätigung des Kupplungsschalters KS das daran anliegende Signal ebenfalls in ein logisches 0/1-Signal um und gibt dieses ebenfalls an das UND-Gatter 58 weiter.In the second branch, the unit 56 converts in accordance with the actuation of the Coupling switch KS the signal applied to it also in a logical 0/1 signal and also passes this on to the AND gate 58.

Das UND-Gatter 58 gibt nur dann ein Aktivierungssignal an die Treiberschaltung 15 des Wechselrichters 14 ab, wenn sowohl die Kupplung betätigt ist als auch die Motordrehzahl n einen vorgegebenen Grenzwert überschreitet. Der Wechselrichter 14 wird vorliegend dann blockiert, wenn an der Treiberschaltung eine 1 anliegt (1 = WR ->blockiert).The AND gate 58 then only gives an activation signal to the driver circuit 15 of the inverter 14 from when both the clutch is actuated is as well as the engine speed n exceeds a predetermined limit. In the present case, the inverter 14 is blocked if at the Driver circuit 1 is present (1 = WR -> blocked).

Mit dieser konstruktiven Ausgestaltung wird ein Betrieb der elektrischen Maschine bei einer automatischen Aktivierung der zentralen Recheneinheit 30 durch das Wecksignal W wirkungsvoll vermieden. Eine Betätigung der Asynchronmaschine 12 aus dem Stand kann somit lediglich bei Betätigung des Kupplungsschalters erfolgen. Erst wenn die Motordrehzahl dann einen bestimmten Schwellwert überschritten hat, kann die Asynchronmaschine auch ohne Betätigen des Kupplungsschalters weiterbetrieben werden.With this design, the electrical machine can be operated upon automatic activation of the central processing unit 30 effectively avoided by the alarm signal W. An actuation of the asynchronous machine 12 from a standing position can thus only be activated when the Coupling switch done. Only when the engine speed then a certain The asynchronous machine can also exceed the threshold value continue to be operated without actuating the clutch switch.

Claims (4)

Vorrichtung zur Überwachung einer Starteinrichtung in einem Kraftfahrzeug mit einer als Anlasser und Generator dienenden elektrischen Maschine (12), einem Wechselrichter (14), zum Wandeln des in der elektrischen Maschine (12) erzeugten oder benötigten Stromes, und einer Steuereinheit (30) zum Steuern des Betriebs der aus der elektrischen Maschine (12) und dem Wechselrichter (14) bestehenden Einheit in Abhängigkeit von Eingangssignalen (W, L, U, T), wobei die Steuereinheit (30) auch bei nicht in Betrieb befindlichem Fahrzeug in zeitlichen Abständen aktivierbar ist,
dadurch gekennzeichnet,
daß eine zusätzliche Steuerung (40) vorgesehen ist, die den Wechselrichter (15) in Abhängigkeit von Fahrzeugbetriebsinformationen (KS, n) aktiviert oder deaktiviert.Device for monitoring a starting device in a motor vehicle with an electrical machine (12) serving as a starter and generator, an inverter (14) for converting the current generated or required in the electrical machine (12), and a control unit (30) for controlling the operation of the unit consisting of the electrical machine (12) and the inverter (14) as a function of input signals (W, L, U, T), the control unit (30) being able to be activated at intervals even when the vehicle is not in operation ,
characterized,
that an additional controller (40) is provided which activates or deactivates the inverter (15) as a function of vehicle operating information (KS, n). Vorrichtung nach Anspruch 1
dadurch gekennzeichnet,
daß die zusätzliche Steuerung (40) als Eingangsgröße ein Drehzahlsignal des Motors (n) und ein Getriebesignal erhält und derart ausgebildet ist, daß der Wechselrichter (14) dann aktiv gesetzt ist, wenn entweder der Antriebsstrang bezüglich einer Drehmomentübertragung unterbrochen ist oder die Motordrehzahl einen bestimmten Wert überschreitet. Device according to claim 1
characterized,
that the additional controller (40) receives as input a speed signal of the motor (s) and a transmission signal and is designed such that the inverter (14) is activated when either the drive train is interrupted with respect to torque transmission or the motor speed a certain one Value exceeds. Vorrichtung nach Anspruch 2,
dadurch gekennzeichnet,
daß als Getriebesignal ein Kupplungsbetätigungssignal (KS) oder ein P/N-Signal eines Automatikgetriebes dient.Device according to claim 2,
characterized,
that a clutch actuation signal (KS) or a P / N signal of an automatic transmission is used as the transmission signal. Vorrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß der Wechselrichter (15) einen von der zusätzlichen Steuerung (40) beaufschlagten Treiber zur Aktivierung oder Deaktivierung aufweist.Device according to one of the preceding claims,
characterized,
that the inverter (15) has a driver acted upon by the additional control (40) for activation or deactivation.
EP00102370A 1999-03-09 2000-02-04 Monitoring system for starter device Expired - Lifetime EP1036936B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19910330A DE19910330A1 (en) 1999-03-09 1999-03-09 Device for monitoring a starting device
DE19910330 1999-03-09

Publications (2)

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EP1036936A1 true EP1036936A1 (en) 2000-09-20
EP1036936B1 EP1036936B1 (en) 2001-11-14

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EP00102370A Expired - Lifetime EP1036936B1 (en) 1999-03-09 2000-02-04 Monitoring system for starter device

Country Status (5)

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US (1) US6414402B1 (en)
EP (1) EP1036936B1 (en)
JP (1) JP2000265929A (en)
DE (2) DE19910330A1 (en)
ES (1) ES2164629T3 (en)

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Also Published As

Publication number Publication date
JP2000265929A (en) 2000-09-26
DE50000034D1 (en) 2001-12-20
EP1036936B1 (en) 2001-11-14
DE19910330A1 (en) 2000-09-14
US6414402B1 (en) 2002-07-02
ES2164629T3 (en) 2002-03-01

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