EP1648743B1 - Circuit for motor vehicles with coding plug - Google Patents

Circuit for motor vehicles with coding plug Download PDF

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Publication number
EP1648743B1
EP1648743B1 EP04741191A EP04741191A EP1648743B1 EP 1648743 B1 EP1648743 B1 EP 1648743B1 EP 04741191 A EP04741191 A EP 04741191A EP 04741191 A EP04741191 A EP 04741191A EP 1648743 B1 EP1648743 B1 EP 1648743B1
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EP
European Patent Office
Prior art keywords
subassembly
plug
unit
evaluation unit
control unit
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.)
Expired - Lifetime
Application number
EP04741191A
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German (de)
French (fr)
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EP1648743A1 (en
Inventor
Jochen Schröder
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bayerische Motoren Werke AG
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Bayerische Motoren Werke AG
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Publication of EP1648743A1 publication Critical patent/EP1648743A1/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/66—Structural association with built-in electrical component
    • H01R13/665—Structural association with built-in electrical component with built-in electronic circuit
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R2201/00—Connectors or connections adapted for particular applications
    • H01R2201/26—Connectors or connections adapted for particular applications for vehicles

Definitions

  • the invention relates to a circuit arrangement for motor vehicles.
  • a control unit for controlling the unit can continue to be manufactured, supplied and installed independently of the unit.
  • the variant is "learned" by the evaluation unit, which is preferably integrated in the control unit for controlling the structural unit. After recognizing the variant in the evaluation unit or in the control unit, mechanical tolerances can be compensated by control technology. Design measures to reduce tolerances can be saved. A simple evaluation in the evaluation unit or in the control unit is given. Also in customer service, easy handling when replacing a unit is possible. The new variant can be re-learned.
  • Fig. 1 shows an application of the circuit arrangement according to the invention in a control device for an at least temporarily four-wheel drive motor vehicle with an electronic control unit, by means of the drive torque of a drive unit on primary drive wheels, the are permanently connected to the drive unit, and on secondary drive wheels, which are connected as needed via a transfer coupling with the drive unit, is variably distributable.
  • the control unit determines a nominal clutch torque which is to be set by means of an actuator device on the transmission clutch.
  • the control unit contains the evaluation unit and the actuator device for the transfer clutch is an example of an electrically controllable unit.
  • Fig. 1 is a temporarily four-wheel drive vehicle in the form of a basically rear-wheel drive motor vehicle with on demand via a transfer clutch 1 switchable front wheel drive shown.
  • the transfer clutch 1 is adjustable via a control unit, consisting of a main control unit 8 and an additional control unit 10.
  • the auxiliary control unit 10 is spatially separated from the main control unit 8 and disposed in the vicinity of the transfer clutch 1. (However, the control unit does not have to consist of two sub-control units.)
  • the entire torque (drive torque) of the drive unit 9 is transmitted to the wheels 6 and 7 of the rear axle 3 with an open transfer clutch 1.
  • the drive unit 9 consists of an internal combustion engine, a transmission and at least one drive control device (not shown here).
  • the drive control unit also communicates, for example, via the known data bus CAN with the main control unit 8 and the auxiliary control unit 10.
  • the rear wheels 6 and 7 are the primary drive wheels since they are permanently connected to the drive unit 9.
  • the drive unit 9 With increasing clutch torque at the transfer clutch 1, the drive unit 9 also drives the wheels 4 and 5 of the front axle 2.
  • the front wheels 4 and 5 are the secondary drive wheels.
  • the main control unit 8 which is preferably part of an electronic vehicle dynamics control control unit (eg DSC from BMW), calculates a desired clutch torque M Ksoll depending on parameters detected and / or determined in the control unit.
  • the main control unit 8 detects or determines, for example, the accelerator pedal position FP, the steering angle LW, the yaw rate y, the wheel speeds n VL , n HL , n VR , n HR of all wheels 4, 5, 6, 7 and the vehicle speed v as a parameter for determining the desired clutch torque M Ksoll .
  • the desired clutch torque M Ksoll is forwarded via the known vehicle data bus CAN to the additional control unit 10.
  • the additional control unit 10 converts the desired clutch torque M Ksoll into a corresponding electrical drive signal for the actuator device of the transfer clutch 1.
  • an evaluation unit 22 is preferably included. Details of the evaluation unit 22 and the two alternative Kodiersteckern 20a and 20b, which are directly or indirectly connected on the one hand with the actuator and on the other hand with the evaluation unit 22 and with the additional control unit 10 will be described in connection with Figures 2 and 3.
  • the actuator device is here an example of an electrically controllable structural unit:
  • the actuator device comprises, for example, an electric motor which moves a worm gear to open and close the transfer clutch 1.
  • a high degree of accuracy is required because the actually set target clutch torque M Ksoll ) is not detected.
  • a classification of the actuator devices is required.
  • different setting angles ⁇ may be required for the actual setting of a setpoint clutch torque M Ksoll .
  • This problem is in Fig. 4a shown. This results in offset errors F offset and slope errors F slope .
  • Fig. 4b depending on the distribution of the offset error F offset and pitch error F slope a classification, ie here a division into fifteen classes K1 to K15 made. The different classes correspond to the possible variants of the actuator device.
  • FIGS. 2 and 3 show in more detail a first and a second possible embodiment of the motor vehicle circuit arrangement according to the invention for identifying one of several variants of an electrically controllable structural unit in the form of said actuator device 1b for the transfer clutch 1:
  • the actuator device 1 b can be connected to a coding plug 20 a via the six electrical connections exemplarily illustrated here.
  • the coding plug 20a has at least one electrical connection b, which can be connected directly or indirectly with the interposition of a cable or cable harness 21 to a measuring input m of the evaluation unit 22.
  • the evaluation unit 22 in the additional control unit 10 that is integrated within an electronic control unit for controlling the unit.
  • the coding plug 20a is an intermediate plug between the electrical connections of the actuator 1b and the electrical connections of the evaluation unit 22 or the additional control unit 10.
  • the coding plug 20a can also be an intermediate plug between the electrical connections of the actuator 1b and the connections of a wiring harness 21 (therefore, the wiring harness 21 is shown in dashed lines), which in turn is connectable to the evaluation unit 22 and the additional control unit 10.
  • the term adapter plug means a plug having input and output electrical connections.
  • the number of electrical connections of the actuator device 1b equal to the number of electrical connections (both the input side and the output side) of the Kodiersteckers 20a and the number of electrical connections of the Kodiersteckers 20a (input side as well as output side) equal to the number of electrical connections of the evaluation unit 22 and the additional control unit 10.
  • a possibly provided between the coding plug 20a and the evaluation unit 22 and the auxiliary control unit 10 harness 21 has on the input side and On the output side also the same number of electrical connections as the coding plug 20a and the evaluation unit 22 and the additional control unit 10 on.
  • an additional plug 20b is used as a coding plug which is fastened to the actuator device 1b by a mechanical connection (eg screw connection) the housing of the additional connector on the housing of the unit).
  • Such an additional plug 20b has only one side at least one electrical connection b, which can be connected directly or indirectly via a cable or via a cable harness 21 with the measurement terminal 22 associated with the measuring input m electrical connection.
  • a wiring harness 21 is arranged between the electrical connections of the actuator 1b and the electrical connections of the evaluation unit 22 and the additional control unit 10, from which at least the cable m associated with the measuring input m is branched off to the connection b '.
  • the coding plug 20a or 20b according to FIGS. 2 or 3 has a fixed electrical circuit through which a defined electrical state can be generated at the measuring input m in the evaluation unit 22.
  • an ohmic resistor R with a defined value can also be zero or infinite
  • the electrical wiring with the ohmic resistance R is in any case such that a corresponding electrical state can be detected at the measuring input m of the evaluation circuit in accordance with the value of the resistor.
  • the defined resistor R on one side with the connection b, which is connectable to the measuring input m of the evaluation unit 22, and on the other side with a connection d, is preferably connected both at the coding plug 20a as an intermediate plug and at the coding plug 20b as additional plug can be connected directly or indirectly to ground or plus in the evaluation unit 22 or the additional control unit 10.
  • each possible variant (eg class K1 to K15) of the actuator device 1b is assigned a resistance value which can be differentiated from all other resistance values.
  • data are stored, by each of which possible variant of the actuator unit 1b each distinguishable from all other states defined electrical state z. B. is assigned according to the selected distinguishable resistance values.
  • an electrical state is defined by either a voltage value or a combination of a current value and a voltage value.
  • the invention includes, for. B. electrical wiring such as short circuit (corresponds to a resistor with the value zero) of the terminal b to ground, short circuit of the terminal b to plus and open terminal b (corresponds to a resistor with the value infinite).
  • the open connection b is preferably used for the variant or for the class (eg class K7) which is installed most frequently.
  • the electrical state is detected by the evaluation unit 22 and compared with the stored data.
  • a corresponding control of the assembly or actuator device 1b is preferably carried out via maps stored in the control unit for controlling the assembly or via the additional control unit 10.

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Arrangement And Mounting Of Devices That Control Transmission Of Motive Force (AREA)
  • Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Arrangement And Driving Of Transmission Devices (AREA)
  • Control Of Electric Motors In General (AREA)

Description

Die Erfindung bezieht sich auf eine Schaltungsanordnung für Kraftfahrzeuge.The invention relates to a circuit arrangement for motor vehicles.

Beispielsweise aus der DE 100 61 025 A1 oder der DE 21 33 062 A1 sind Schaltanordnungen für Kraftfahrzeuge bekannt, womit über manuell zu betätigende Schalter in einer Bedieneinheit abhängig von der Schalterstellung unterschiedliche Wiederstände an den Messeingang einer Auswerteschaltung angelegt werden. Hierdurch findet eine manuell zu betätigende Kennzeichnung einer von mehreren anforderbaren Funktionen Einegattungsgemäße Schaltungsanordnung ist inFor example, from DE 100 61 025 A1 or DE 21 33 062 A1 switching arrangements for motor vehicles are known, which are applied via manually operated switch in an operating unit depending on the switch position different resistances to the measuring input of an evaluation circuit. As a result, a manually operable identification of one of a plurality of requestable functions of a generic circuit arrangement is in

der DE 198 20 691 A1 beschrieben.DE 198 20 691 A1.

Es ist Aufgabe der Erfindung, eine einfache und kostengünstige Schaltanordnung für Kraftfahrzeuge zur Kennzeichnung einer von mehreren Varianten einer elektrisch steuerbaren Baueinheit zu schaffen.It is an object of the invention to provide a simple and inexpensive switching arrangement for motor vehicles for identifying one of several variants of an electrically controllable assembly.

Diese Aufgabe wird durch die Merkmale des Patentanspruchs 1 gelöst. Vorteilhafte Weiterbildungen sind die Gegenstände der abhängigen Patentansprüche.This object is solved by the features of patent claim 1. Advantageous developments are the subject matters of the dependent claims.

Durch die Erfindung kann eine Steuereinheit zur Steuerung der Baueinheit weiterhin unabhängig von der Baueinheit gefertigt, geliefert und verbaut werden. Bei unterschiedlichen Varianten einer Baueinheit ist kein logistischer Zusatzaufwand erforderlich. Die Variante wird durch die Auswerteeinheit, die vorzugsweise in der Steuereinheit zur Steuerung der Baueinheit integriert ist, "gelernt". Nach Erkennen der Variante in der Auswerteeinheit bzw. in der Steuereinheit können mechanische Toleranzen steuerungstechnisch ausgeglichen werden. Konstruktive Maßnahmen zur Verringerung der Toleranzen können eingespart werden. Eine einfache Auswertung in der Auswerteeinheit bzw. in der Steuereinheit ist gegeben. Auch im Kundendienst ist eine einfache Handhabung beim Austausch einer Baueinheit möglich. Die neue Variante kann neu gelernt werden.By the invention, a control unit for controlling the unit can continue to be manufactured, supplied and installed independently of the unit. In different variants of a unit no additional logistical effort is required. The variant is "learned" by the evaluation unit, which is preferably integrated in the control unit for controlling the structural unit. After recognizing the variant in the evaluation unit or in the control unit, mechanical tolerances can be compensated by control technology. Design measures to reduce tolerances can be saved. A simple evaluation in the evaluation unit or in the control unit is given. Also in customer service, easy handling when replacing a unit is possible. The new variant can be re-learned.

In der Zeichnung ist ein Ausführungsbeispiel der Erfindung dargestellt. Es zeigt

Fig. 1
eine mögliche Anwendung der erfindungsgemäßen Schaltanordnung bei Kraftfahrzeugen mit regelbarem Allradantrieb,
Fig. 2
eine erste Ausgestaltung der erfindungsgemäßen Schaltanordnung,
Fig. 3
eine zweite Ausgestaltung der erfindungsgemäßen Schaltanordnung,
Fig. 4a
und
Fig. 4b
ein Beispiel für das Zustandekommen unterschiedlicher Varianten einer elektrisch steuerbaren Baueinheit in Form einer Aktuatorvorrichtung für den regelbaren Allradantrieb
In the drawing, an embodiment of the invention is shown. It shows
Fig. 1
a possible application of the switching arrangement according to the invention in motor vehicles with adjustable four-wheel drive,
Fig. 2
A first embodiment of the switching arrangement according to the invention,
Fig. 3
a second embodiment of the switching arrangement according to the invention,
Fig. 4a
and
Fig. 4b
an example of the realization of different variants of an electrically controllable assembly in the form of an actuator for the adjustable four-wheel drive

Fig. 1 zeigt eine Anwendung der erfindungsgemäßen Schaltungsanordnung bei einer Steuervorrichtung für ein zumindest zeitweise vierradgetriebenes Kraftfahrzeug mit einer elektronischen Steuereinheit, mittels der das Antriebsmoment einer Antriebseinheit auf primäre Antriebsräder, die permanent mit der Antriebseinheit verbunden sind, und auf sekundäre Antriebsräder, die bedarfsweise über eine Übertragungskupplung mit der Antriebseinheit verbindbar sind, variabel verteilbar ist. Dabei ermittelt die Steuereinheit ein Soll-Kupplungsmoments, das mittels einer Aktuatorvorrichtung an der Übertragungskupplung einzustellen ist. Die Steuereinheit enthält die Auswerteeinheit und die Aktuatorvorrichtung für die Übertragungskupplung ist ein Beispiel für eine elektrisch steuerbare Baueinheit.Fig. 1 shows an application of the circuit arrangement according to the invention in a control device for an at least temporarily four-wheel drive motor vehicle with an electronic control unit, by means of the drive torque of a drive unit on primary drive wheels, the are permanently connected to the drive unit, and on secondary drive wheels, which are connected as needed via a transfer coupling with the drive unit, is variably distributable. In this case, the control unit determines a nominal clutch torque which is to be set by means of an actuator device on the transmission clutch. The control unit contains the evaluation unit and the actuator device for the transfer clutch is an example of an electrically controllable unit.

Im Detail ist in Fig. 1 ein zeitweise vierradgetriebenes Fahrzeug in Form eines grundsätzlich hinterradangetriebenen Kraftfahrzeugs mit bedarfsweise über eine Übertragungskupplung 1 zuschaltbarem Vorderradantrieb dargestellt. Die Übertragungskupplung 1 ist über eine Steuereinheit, bestehend aus einer Hauptsteuereinheit 8 und einer Zusatzsteuereinheit 10, einstellbar. Die Zusatzsteuereinheit 10 ist räumlich von der Hauptsteuereinheit 8 getrennt und in der Nähe der Übertragungskupplung 1 angeordnet. (Die Steuereinheit muss jedoch nicht aus zwei Teilsteuereinheiten bestehen.)In detail, in Fig. 1 is a temporarily four-wheel drive vehicle in the form of a basically rear-wheel drive motor vehicle with on demand via a transfer clutch 1 switchable front wheel drive shown. The transfer clutch 1 is adjustable via a control unit, consisting of a main control unit 8 and an additional control unit 10. The auxiliary control unit 10 is spatially separated from the main control unit 8 and disposed in the vicinity of the transfer clutch 1. (However, the control unit does not have to consist of two sub-control units.)

Bei einem Fahrzeug nach Fig. 1 wird mit offener Übertragungskupplung 1 das gesamte Drehmoment (Antriebsmoment) der Antriebseinheit 9 auf die Räder 6 und 7 der Hinterachse 3 übertragen. Vorzugsweise besteht die Antriebseinheit 9 aus einer Brennkraftmaschine, einem Getriebe und mindestens einem Antriebssteuergerät (hier nicht näher dargestellt). Das Antriebssteuergerät kommuniziert beispielsweise auch über den bekannten Datenbus CAN mit der Hauptsteuereinheit 8 und der Zusatzsteuereinheit 10. In Fig. 1 sind die Hinterräder 6 und 7 die primären Antriebsräder, da sie permanent mit der Antriebseinheit 9 verbunden sind. Mit zunehmendem Kupplungsmoment an der Übertragungskupplung 1 treibt die Antriebseinheit 9 auch die Räder 4 und 5 der Vorderachse 2 an. Somit sind die Vorderräder 4 und 5 die sekundären Antriebsräder.1, the entire torque (drive torque) of the drive unit 9 is transmitted to the wheels 6 and 7 of the rear axle 3 with an open transfer clutch 1. Preferably, the drive unit 9 consists of an internal combustion engine, a transmission and at least one drive control device (not shown here). The drive control unit also communicates, for example, via the known data bus CAN with the main control unit 8 and the auxiliary control unit 10. In FIG. 1, the rear wheels 6 and 7 are the primary drive wheels since they are permanently connected to the drive unit 9. With increasing clutch torque at the transfer clutch 1, the drive unit 9 also drives the wheels 4 and 5 of the front axle 2. Thus, the front wheels 4 and 5 are the secondary drive wheels.

Die Hauptsteuereinheit 8, die vorzugsweise Teil eines elektronischen Fahrdynamikregel-Steuergeräts (z. B. DSC von BMW) ist, berechnet abhängig von im Steuergerät erfassten und/oder ermittelten Parametern ein Soll-Kupplungsmoment MKsoll. Die Hauptsteuereinheit 8 erfasst oder ermittelt beispielsweise die Fahrpedalstellung FP, den Lenkwinkel LW, die Gierrate bzw. Gierwinkelgeschwindigkeit r, die Raddrehzahlen nVL, nHL, nVR, nHR aller Räder 4, 5, 6, 7 sowie die Fahrzeuggeschwindigkeit v als Parameter zur Ermittlung des Soll-Kupplungsmoments MKsoll. Das Soll-Kupplungsmoment MKsoll wird über den bekannten Fahrzeug-Datenbus CAN an die Zusatzsteuereinheit 10 weitergeleitet.The main control unit 8, which is preferably part of an electronic vehicle dynamics control control unit (eg DSC from BMW), calculates a desired clutch torque M Ksoll depending on parameters detected and / or determined in the control unit. The main control unit 8 detects or determines, for example, the accelerator pedal position FP, the steering angle LW, the yaw rate y, the wheel speeds n VL , n HL , n VR , n HR of all wheels 4, 5, 6, 7 and the vehicle speed v as a parameter for determining the desired clutch torque M Ksoll . The desired clutch torque M Ksoll is forwarded via the known vehicle data bus CAN to the additional control unit 10.

Die Zusatzsteuereinheit 10 setzt das Soll-Kupplungsmoment MKsoll in ein entsprechendes elektrisches Ansteuersignal für die Aktuatorvorrichtung der Übertragungskupplung 1 um. In der Zusatzsteuereinheit 10 ist vorzugsweise eine Auswerteeinheit 22 enthalten. Details zur Auswerteeinheit 22 und zu den beiden alternativen Kodiersteckern 20a bzw. 20b, die einerseits mit der Aktuatorvorrichtung und andererseits mit der Auswerteinheit 22 bzw. mit der Zusatzsteuereinheit 10 direkt oder indirekt verbindbar sind, werden im Zusammenhang mit den Figuren 2 und 3 beschrieben.The additional control unit 10 converts the desired clutch torque M Ksoll into a corresponding electrical drive signal for the actuator device of the transfer clutch 1. In the additional control unit 10, an evaluation unit 22 is preferably included. Details of the evaluation unit 22 and the two alternative Kodiersteckern 20a and 20b, which are directly or indirectly connected on the one hand with the actuator and on the other hand with the evaluation unit 22 and with the additional control unit 10 will be described in connection with Figures 2 and 3.

Die Aktuatorvorrichtung ist hier ein Beispiel für eine elektrisch steuerbare Baueinheit: Die Aktuatorvorrichtung umfasst beispielsweise einen Elektromotor, der zum Öffnen und Schließen der Übertragungskupplung 1 ein Schneckengetriebe bewegt. Bei der Ansteuerung der Aktuatorvorrichtung wird ein hohes Maß an Genauigkeit gefordert, da das tatsächlich eingestellte Soll-Kupplungsmoments MKsoll) nicht erfasst wird. Da also keine kontrollierende Regelung sondern eine Steuerung der Aktuatorvorrichtung vorgenommen wird und bekannterweise derartige Aktuatorvorrichtungen hohe Toleranzen aufweisen, ist eine Klassifizierung der Aktuatorvorrichtungen erforderlich. Für die tatsächliche Einstellung eines Soll-Kupplungsmoments MKsoll können abhängig von Toleranzen unterschiedliche Einstellwinkel ϕ erforderlich sein. Diese Problematik ist in Fig. 4a gezeigt. Es ergeben sich also Offsetfehler Foffset und Steigungsfehler FSteigung. In Fig. 4b wird abhängig von der Verteilung der Offsetfehler Foffset und Steigungsfehler FSteigung eine Klassifizierung, d.h. hier eine Einteilung in fünfzehn Klassen K1 bis K15, vorgenommen. Die unterschiedlichen Klassen entsprechen den möglichen Varianten der Aktuatorvorrichtung.The actuator device is here an example of an electrically controllable structural unit: The actuator device comprises, for example, an electric motor which moves a worm gear to open and close the transfer clutch 1. In the control of the actuator device, a high degree of accuracy is required because the actually set target clutch torque M Ksoll ) is not detected. Thus, since no controlling control but control of the actuator device is performed and known such actuator devices have high tolerances, a classification of the actuator devices is required. Depending on the tolerances, different setting angles φ may be required for the actual setting of a setpoint clutch torque M Ksoll . This problem is in Fig. 4a shown. This results in offset errors F offset and slope errors F slope . In Fig. 4b, depending on the distribution of the offset error F offset and pitch error F slope a classification, ie here a division into fifteen classes K1 to K15 made. The different classes correspond to the possible variants of the actuator device.

In den Figuren 2 und 3 sind eine erste und eine zweite mögliche Ausgestaltung der erfindungsgemäßen Schaltungsanordnung für Kraftfahrzeuge zur Kennzeichnung einer von mehreren Varianten einer elektrisch steuerbaren Baueinheit in Form der genannten Aktuatorvorrichtung 1 b für die Übertragungskupplung 1 näher dargestellt:FIGS. 2 and 3 show in more detail a first and a second possible embodiment of the motor vehicle circuit arrangement according to the invention for identifying one of several variants of an electrically controllable structural unit in the form of said actuator device 1b for the transfer clutch 1:

In Fig. 2 ist die Aktuatorvorrichtung 1 b mit einem Kodierstecker 20a über die hier beispielhaft dargestellten sechs elektrischen Anschlüsse verbindbar. Der Kodierstecker 20a weist mindestens einen elektrischen Anschluss b auf, der direkt oder indirekt unter Zwischenschaltung eines Kabels oder Kabelbaumes 21 mit einem Messeingang m der Auswerteeinheit 22 verbindbar ist. Vorzugsweise ist hier die Auswerteeinheit 22 in der Zusatzsteuereinheit 10, also innerhalb einer elektronischen Steuereinheit zur Steuerung der Baueinheit, integriert. Im speziellen Beispiel nach Fig. 2 ist der Kodierstecker 20a ein Zwischenstecker zwischen den elektrischen Anschlüssen der Aktuatorvorrichtung 1b und den elektrischen Anschlüssen der Auswerteeinheit 22 bzw. der Zusatzsteuereinheit 10. Auch kann der Kodierstecker 20a ein Zwischenstecker zwischen den elektrischen Anschlüssen der Aktuatorvorrichtung 1b und den Anschlüssen eines Kabelbaums 21 sein (daher ist der Kabelbaum 21 gestrichelt dargestellt), der wiederum mit der Auswerteeinheit 22 bzw. der Zusatzsteuereinheit 10 verbindbar ist. Unter dem Begriff Zwischenstecker ist ein Stecker gemeint, der eingangs- und ausgangsseitige elektrische Anschlüsse aufweist. Dabei sind vorzugsweise die Anzahl der elektrischen Anschlüsse der Aktuatorvorrichtung 1b gleich der Anzahl der elektrischen Anschlüsse (sowohl eingangsseitig als auch ausgangsseitig) des Kodiersteckers 20a und die Anzahl der elektrischen Anschlüsse des Kodiersteckers 20a (eingangsseitig wie auch ausgangsseitig) gleich der Anzahl der elektrischen Anschlüsse der Auswerteeinheit 22 bzw. der Zusatzsteuereinheit 10. Ein eventuell zwischen dem Kodierstecker 20a und der Auswerteeinheit 22 bzw. der Zusatzsteuereinheit 10 vorgesehener Kabelbaum 21 weist eingangsseitig und ausgangsseitig ebenfalls die gleiche Anzahl elektrischer Anschlüsse wie der Kodierstecker 20a und die Auswerteeinheit 22 bzw. die Zusatzsteuereinheit 10 auf.In FIG. 2, the actuator device 1 b can be connected to a coding plug 20 a via the six electrical connections exemplarily illustrated here. The coding plug 20a has at least one electrical connection b, which can be connected directly or indirectly with the interposition of a cable or cable harness 21 to a measuring input m of the evaluation unit 22. Preferably, here the evaluation unit 22 in the additional control unit 10, that is integrated within an electronic control unit for controlling the unit. In the specific example according to FIG. 2, the coding plug 20a is an intermediate plug between the electrical connections of the actuator 1b and the electrical connections of the evaluation unit 22 or the additional control unit 10. The coding plug 20a can also be an intermediate plug between the electrical connections of the actuator 1b and the connections of a wiring harness 21 (therefore, the wiring harness 21 is shown in dashed lines), which in turn is connectable to the evaluation unit 22 and the additional control unit 10. The term adapter plug means a plug having input and output electrical connections. In this case, preferably the number of electrical connections of the actuator device 1b equal to the number of electrical connections (both the input side and the output side) of the Kodiersteckers 20a and the number of electrical connections of the Kodiersteckers 20a (input side as well as output side) equal to the number of electrical connections of the evaluation unit 22 and the additional control unit 10. A possibly provided between the coding plug 20a and the evaluation unit 22 and the auxiliary control unit 10 harness 21 has on the input side and On the output side also the same number of electrical connections as the coding plug 20a and the evaluation unit 22 and the additional control unit 10 on.

In Fig. 3 ist eine Schaltungsanordnung gezeigt, bei der anstelle eines Zwischensteckers, der elektrisch mit der Aktuatorvorrichtung 1 b verbindbar ist, ein Zusatzstecker 20b als Kodierstecker verwendet wird, der durch eine mechanische Verbindung an der Aktuatorvorrichtung 1b befestigt ist (z. B. Verschraubung des Gehäuses des Zusatzsteckers am Gehäuse der Baueinheit). Ein derartiger Zusatzstecker 20b weist nur einseitig zumindest einen elektrischen Anschluss b auf, der direkt oder indirekt über ein Kabel oder über einen Kabelbaum 21 mit dem dem Messeingang m zugeordneten elektrischen Anschluss der Auswerteeinheit 22 verbindbar ist. Vorzugsweise ist zwischen den elektrischen Anschlüssen der Aktuatorvorrichtung 1b und den elektrischen Anschlüssen der Auswerteeinheit 22 bzw. der Zusatzsteuereinheit 10 ein Kabelbaum 21 angeordnet, von dem zumindest das dem Messeingang m zugeordnete Kabel mit dem Anschluss b' abgezweigt wird.3 shows a circuit arrangement in which, instead of an intermediate plug which is electrically connectable to the actuator device 1b, an additional plug 20b is used as a coding plug which is fastened to the actuator device 1b by a mechanical connection (eg screw connection) the housing of the additional connector on the housing of the unit). Such an additional plug 20b has only one side at least one electrical connection b, which can be connected directly or indirectly via a cable or via a cable harness 21 with the measurement terminal 22 associated with the measuring input m electrical connection. Preferably, a wiring harness 21 is arranged between the electrical connections of the actuator 1b and the electrical connections of the evaluation unit 22 and the additional control unit 10, from which at least the cable m associated with the measuring input m is branched off to the connection b '.

Der Kodierstecker 20a oder 20b nach den Figuren 2 oder 3 weist eine feste elektrische Beschaltung auf, durch die am Messeingang m in der Auswerteeinheit 22 ein definierter elektrischer Zustand erzeugbar ist.The coding plug 20a or 20b according to FIGS. 2 or 3 has a fixed electrical circuit through which a defined electrical state can be generated at the measuring input m in the evaluation unit 22.

Dazu ist am Anschluss b des Kodiersteckers 20a oder 20b, der direkt oder indirekt mit dem Anschluss m der Auswerteeinheit 22 bzw. der Zusatzsteuereinheit 10 verbindbar ist, ein ohmscher Widerstand R mit definiertem Wert (kann auch Null oder unendlich sein) angeschlossen, der entsprechend der Beschaltung des Messeinganges beispielsweise gegen "Masse" (siehe Beschaltung des Anschlusses d) oder gegen "Plus" (hier nicht dargestellt) geschaltet werden kann. Die elektrische Beschaltung mit dem ohmschen Widerstand R ist jedenfalls derart, dass am Messeingang m der Auswerteschaltung entsprechend dem Wert des Widerstandes ein entsprechender elektrischer Zustand erfasst werden kann. Vorzugsweise ist sowohl beim Kodierstecker 20a als Zwischenstecker als auch beim Kodierstecker 20b als Zusatzstecker der definierte Widerstand R auf einer Seite mit dem Anschluss b, der mit dem Messeingang m der Auswerteeinheit 22 verbindbar ist, und auf der anderen Seite mit einem Anschluss d angeschlossen, der direkt oder indirekt mit Masse oder Plus in der Auswerteeinheit 22 bzw. der Zusatzsteuereinheit 10 verbindbar ist.For this purpose, at the terminal b of the Kodiersteckers 20a or 20b, which is directly or indirectly connected to the terminal m of the evaluation unit 22 and the auxiliary control unit 10, an ohmic resistor R with a defined value (can also be zero or infinite) connected, the according to the wiring of the measuring input, for example, against "ground" (see wiring of the terminal d) or against "plus" (not shown here) can be switched. The electrical wiring with the ohmic resistance R is in any case such that a corresponding electrical state can be detected at the measuring input m of the evaluation circuit in accordance with the value of the resistor. The defined resistor R on one side with the connection b, which is connectable to the measuring input m of the evaluation unit 22, and on the other side with a connection d, is preferably connected both at the coding plug 20a as an intermediate plug and at the coding plug 20b as additional plug can be connected directly or indirectly to ground or plus in the evaluation unit 22 or the additional control unit 10.

Jeder möglichen Variante (z. B. Klasse K1 bis K15) der Aktuatorvorrichtung 1 b ist beispielsweise jeweils ein von allen anderen Widerstandswerten unterscheidbarer Widerstandswert zugeordnet. In der Auswerteeinheit 22 sind Daten abgespeichert, durch die jeder möglichen Variante der Aktuatoreinheit 1b jeweils ein von allen anderen Zuständen unterscheidbarer definierter elektrischer Zustand z. B. entsprechend den ausgewählten unterscheidbaren Widerstandwerten zugeordnet ist.By way of example, each possible variant (eg class K1 to K15) of the actuator device 1b is assigned a resistance value which can be differentiated from all other resistance values. In the evaluation unit 22 data are stored, by each of which possible variant of the actuator unit 1b each distinguishable from all other states defined electrical state z. B. is assigned according to the selected distinguishable resistance values.

Ein elektrischer Zustand ist z.B. entweder durch einen Spannungswert oder eine Kombination von einem Stromwert und einem Spannungswert definiert. Die Erfindung umfasst z. B. auch elektrische Beschaltungen wie Kurzschluss (entspricht einem Widerstand mit dem Wert Null) des Anschlusses b gegen Masse, Kurzschluss des Anschlusses b gegen Plus und offener Anschluss b (entspricht einem Widerstand mit dem Wert unendlich). Der offene Anschluss b wird aus Kostengründen vorzugsweise für die Variante bzw. für die Klasse (z.B. Klasse K7) verwendet, die an häufigsten verbaut wird. Zur Unterscheidung dieser drei elektrischen Beschaltungen sind z. B. definierte elektrische Zustände in Form von Strom-/Spannungskombinationen erforderlich.For example, an electrical state is defined by either a voltage value or a combination of a current value and a voltage value. The invention includes, for. B. electrical wiring such as short circuit (corresponds to a resistor with the value zero) of the terminal b to ground, short circuit of the terminal b to plus and open terminal b (corresponds to a resistor with the value infinite). For reasons of cost, the open connection b is preferably used for the variant or for the class (eg class K7) which is installed most frequently. To distinguish these three electrical circuits z. B. defined electrical states in the form of current / voltage combinations required.

Der elektrische Zustand wird von der Auswerteeinheit 22 erfasst und mit den abgespeicherten Daten verglichen. Vorzugsweise wird entsprechend der von der Auswerteeinheit 22 so erkannten vorliegenden Variante der Baueinheit bzw. Aktuatorvorrichtung 1b vorzugsweise über in der Steuereinheit zur Steuerung der Baueinheit bzw. über in der Zusatzsteuereinheit 10 abgelegte Kennfelder eine entsprechende Steuerung der Baueinheit bzw. Aktuatorvorrichtung 1 b vorgenommen.The electrical state is detected by the evaluation unit 22 and compared with the stored data. Preferably, according to the present variant of the assembly or actuator device 1b so recognized by the evaluation unit 22, a corresponding control of the assembly or actuator device 1b is preferably carried out via maps stored in the control unit for controlling the assembly or via the additional control unit 10.

Claims (6)

  1. A circuit arrangement for motor vehicles for characterising one of a plurality of variants (K1 to K15) of an electrically controllable subassembly (1b), wherein
    • the subassembly (1 b) can be connected to a coding plug and
    • the coding plug (20a; 20b) has at least one electrical terminal (b), which can be connected directly or indirectly to a measurement input (m) of an evaluation unit (22) and
    • the coding plug (20a; 20b) has a fixed electrical wiring (R), by means of which a defined electrical state can be generated at the measuring input (m) in the evaluation unit (22)
    • the electrical state is detected in the evaluation unit (22) and compared with stored data, by means of which a defined electrical state which can be differentiated from all other states is associated in each case with each possible variant (K1 to K15) of the subassembly, characterised in that
    • the possible variants of the subassembly correspond to different classes, which are defined on the basis of a tolerance-related classification of the subssemblies, and
    • the coding plug is an additional plug, which is fastened to the subassembly by means of a mechanical connection.
  2. A circuit arrangement according to claim 1, characterised in that the electrical wiring of the coding plug is an ohmic resistor with a defined value (R), which can be connected to the terminal (b) of the coding plug (20a; 20b) associated with the measurement input (m) of the evaluation circuit (22), wherein a resistance value which can be differentiated from all other resistance values is associated with each possible variant (K1 to K15) of the subassembly.
  3. A circuit arrangement according to claim 1 or 2, characterised in that the coding plug (20a) is an adapter plug between the electrical terminals of the subassembly (1 b) and the electrical terminals of the evaluation unit (22) or an electronic control unit (10) containing the evaluation unit to control the subassembly (1b).
  4. A circuit arrangement according to any one of claims 1 to 3, characterised in that the coding plug (20a) is an adapter plug between the electrical terminals of the subassembly (1 b) and the terminals of a cable harness (21), which can be connected to the evaluation unit (22) or to an electronic control unit (10) containing the evaluation unit (22) to control the subassembly (1 b).
  5. A circuit arrangement according to claim 1 or 2, characterised in that the coding plug (20b) is an additional plug, which is fastened to the subassembly (1 b) by a mechanical connection and has at least one electrical terminal (b), which can be connected directly or indirectly via a cable or via a cable harness to the electrical terminal (m), associated with the measurement input, of the evaluation unit (22), or of an electronic control unit (10) containing the evaluation unit (22) to control the subassembly (1b).
  6. The application of a circuit arrangement according to any one of the preceding claims, in a control device for a motor vehicle which is at least occasionally four-wheel drive, comprising an electronic control unit, by means of which the drive torque of a drive unit can be variably distributed to primary drive wheels, which are permanently connected to the drive unit, and to secondary drive wheels, which can be connected, as necessary, via a transmission clutch (1) to the drive unit, in that the control unit determines a desired clutch torque, which is to be adjusted by means of an actuator device (1 b) at the transmission clutch (1), the control unit containing the evaluation unit (22) and the actuator device (1 b) being the electrically controllable subassembly.
EP04741191A 2003-07-24 2004-07-20 Circuit for motor vehicles with coding plug Expired - Lifetime EP1648743B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10333651A DE10333651B4 (en) 2003-07-24 2003-07-24 Circuit arrangement for motor vehicles
PCT/EP2004/008147 WO2005009797A1 (en) 2003-07-24 2004-07-20 Circuit for motor vehicles with coding plug

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EP1648743A1 EP1648743A1 (en) 2006-04-26
EP1648743B1 true EP1648743B1 (en) 2007-01-17

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US (1) US7129716B2 (en)
EP (1) EP1648743B1 (en)
JP (1) JP4521402B2 (en)
DE (2) DE10333651B4 (en)
ES (1) ES2279396T3 (en)
WO (1) WO2005009797A1 (en)

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DE502004002693D1 (en) 2007-03-08
JP2006528572A (en) 2006-12-21
DE10333651A1 (en) 2005-02-24
US7129716B2 (en) 2006-10-31
JP4521402B2 (en) 2010-08-11
ES2279396T3 (en) 2007-08-16
WO2005009797A1 (en) 2005-02-03
US20060119370A1 (en) 2006-06-08
DE10333651B4 (en) 2005-10-06
EP1648743A1 (en) 2006-04-26

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