DE10124989A1 - Method for engine transmission operation for motor vehicles with direction of travel and transmission take into consideration to control engine to prevent critical vehicle consistons - Google Patents

Method for engine transmission operation for motor vehicles with direction of travel and transmission take into consideration to control engine to prevent critical vehicle consistons

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Publication number
DE10124989A1
DE10124989A1 DE10124989A DE10124989A DE10124989A1 DE 10124989 A1 DE10124989 A1 DE 10124989A1 DE 10124989 A DE10124989 A DE 10124989A DE 10124989 A DE10124989 A DE 10124989A DE 10124989 A1 DE10124989 A1 DE 10124989A1
Authority
DE
Germany
Prior art keywords
vehicle
transmission
rotation
signal
transmission control
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.)
Ceased
Application number
DE10124989A
Other languages
German (de)
Inventor
Marko Noack
Joachim Berrang
Walter Stroh
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
Robert Bosch GmbH
ZF Friedrichshafen AG
Original Assignee
Bayerische Motoren Werke AG
Robert Bosch GmbH
ZF Friedrichshafen AG
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 Bayerische Motoren Werke AG, Robert Bosch GmbH, ZF Friedrichshafen AG filed Critical Bayerische Motoren Werke AG
Priority to DE10124989A priority Critical patent/DE10124989A1/en
Priority to GB0211225A priority patent/GB2377475B/en
Publication of DE10124989A1 publication Critical patent/DE10124989A1/en
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
    • B60W10/06—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of combustion engines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T7/00—Brake-action initiating means
    • B60T7/12—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger
    • B60T7/122—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger for locking of reverse movement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T7/00—Brake-action initiating means
    • B60T7/12—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger
    • B60T7/126—Brakes for railway vehicles coming into operation in case of exceeding a predetermined speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/10—Conjoint control of vehicle sub-units of different type or different function including control of change-speed gearings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/10—Conjoint control of vehicle sub-units of different type or different function including control of change-speed gearings
    • B60W10/11—Stepped gearings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/18—Conjoint control of vehicle sub-units of different type or different function including control of braking systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
    • B60W30/18—Propelling the vehicle
    • B60W30/18009—Propelling the vehicle related to particular drive situations
    • B60W30/18109—Braking
    • B60W30/18118—Hill holding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
    • B60W30/18—Propelling the vehicle
    • B60W30/1819—Propulsion control with control means using analogue circuits, relays or mechanical links
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/021—Introducing corrections for particular conditions exterior to the engine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/16—Inhibiting or initiating shift during unfavourable conditions, e.g. preventing forward reverse shift at high vehicle speed, preventing engine over speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2520/00—Input parameters relating to overall vehicle dynamics
    • B60W2520/28—Wheel speed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2250/00—Engine control related to specific problems or objectives
    • F02D2250/28—Control for reducing torsional vibrations, e.g. at acceleration
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
    • F16H59/36—Inputs being a function of speed
    • F16H59/44—Inputs being a function of speed dependent on machine speed of the machine, e.g. the vehicle
    • F16H2059/443—Detecting travel direction, e.g. the forward or reverse movement of the vehicle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H2312/00—Driving activities
    • F16H2312/02—Driving off
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
    • F16H59/36—Inputs being a function of speed
    • F16H59/44—Inputs being a function of speed dependent on machine speed of the machine, e.g. the vehicle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
    • F16H63/40—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism comprising signals other than signals for actuating the final output mechanisms
    • F16H63/50—Signals to an engine or motor

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • General Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Control Of Transmission Device (AREA)

Abstract

The method takes into consideration the direction of travel of the vehicle to prevent critical vehicle and/or transmission conditions. Taken into consideration are the direction of rotation of at least one wheel, and of a transmission output, which are sent via signals to a transmission control device. This transmits a corresponding signal to the engine, to supply a higher torque. If the vehicle rolls backwards, the wheel rotation signal automatically operates the brake.

Description

Die vorliegende Erfindung betrifft ein Verfahren zur Steuerung eines Fahrzeuggetriebes und eine Fahrzeuggetriebe-Steuervorrichtung zur Vermeidung kritischer Fahrzeug- und/oder Getriebezustände.The present invention relates to a method for controlling a vehicle transmission and a vehicle transmission control device to avoid critical vehicle and / or gear conditions.

Bei Kraftfahrzeugen mit Automatikgetriebe und insbesondere bei geländegängigen Fahrzeugen mit Automatikgetriebe kann es bei bestimmten Rahmenbedingungen der konkreten Fahrsituation zu kritischen Fahrzeugzuständen bzw. kritischen Getriebezu­ ständen kommen. Beispielsweise kann ein Rückwärtsrollen eines Fahrzeugs am Berg dazu führen, daß der Motor ausgeht, wenn die Hangabtriebskraft größer ist als das Ge­ triebeschleppmoment. Dies ist vor allem bei geländegängigen Fahrzeugen bei Gelän­ defahrten kritisch, da nach einem Ausgehen des Motors verschiedene, den Fahrer un­ terstützende Funktionen (beispielsweise Servolenkung, Bremskraftverstärker, etc.) nach kurzer Zeit nicht mehr zur Verfügung stehen.For vehicles with automatic transmission and especially for off-road vehicles Vehicles with automatic transmissions can do so under certain general conditions concrete driving situation to critical vehicle conditions or critical transmissions stands come. For example, a vehicle can roll backwards on a mountain cause the engine to stop when the downhill force is greater than the Ge drives sluggish moment. This is especially the case with all-terrain vehicles at Gelän drove critically, because after the engine has gone out different, the driver un supporting functions (e.g. power steering, brake booster, etc.) are no longer available for a short time.

Demgegenüber liegt der Erfindung die Aufgabe zugrunde, ein Verfahren zur Steuerung eines Fahrzeuggetriebes sowie eine Fahrzeuggetriebe-Steuervorrichtung bereitzustel­ len, die dem Fahrer mehr Sicherheit geben, Schäden des Fahrzeugs bzw. des Getrie­ bes verhindern und die Verfügbarkeit des Fahrzeugs erhöhen. Diese Aufgabe wird mit den Merkmalen der Ansprüche gelöst.In contrast, the invention has for its object a method for control to provide a vehicle transmission and a vehicle transmission control device len, which give the driver more safety, damage to the vehicle or the transmission prevent bes and increase the availability of the vehicle. This task is done with solved the features of the claims.

Die Erfindung geht von dem Grundgedanken aus, die Fahrtrichtung des Fahrzeuges zu erfassen und bei der Steuerung des Fahrzeuggetriebes zu berücksichtigen, so daß kritische Fahrzeug- und/oder Getriebezustände vermieden werden. Dazu werden ge­ mäß einer ersten Ausführungsform dem Getriebesteuergerät Signale zugeführt, die die Drehrichtung mindestens eines Fahrzeugrades darstellen. Vorzugsweise wird dem Ge­ triebesteuergerät ein Signal bereitgestellt, das die Drehrichtung mehrerer Fahrzeugrä­ der berücksichtigt. Dadurch erfolgt eine Plausibilitätskontrolle und Signale von Fahrzeu­ grädern, die keine Bodenberührung haben und eventuell in die andere Richtung drehen bleiben somit ohne Einfluss auf die Getriebesteuerung. Gemäß einer zweiten Ausfüh­ rungsform wird dem Getriebesteuergerät ein Signal zur Verfügung gestellt, das die Drehrichtung am Getriebeabtrieb darstellt. Dieses Signal wird mittels eines Drehrich­ tungssensors am Getriebeabtrieb aufgenommen. Die Verwendung dieses Signals ist vorteilhaft, da die Drehrichtung am Getriebeabtrieb dazu führen kann, dass der Motor abgewürgt wird und dies erfindungsgemäß durch Berücksichtigung unmittelbar dieses Signals verhindert wird.The invention is based on the basic idea, the direction of travel of the vehicle to capture and to take into account in the control of the vehicle transmission, so that critical vehicle and / or transmission conditions can be avoided. For this purpose, ge According to a first embodiment, the transmission control unit is supplied with signals which indicate the Represent the direction of rotation of at least one vehicle wheel. Preferably the Ge Drive control unit provided a signal that the direction of rotation of several vehicle that takes into account. This results in a plausibility check and signals from vehicles grading that has no ground contact and may turn in the other direction  thus have no influence on the transmission control. According to a second embodiment form, a signal is made available to the transmission control unit, which the Represents the direction of rotation on the gearbox output. This signal is generated using a rotary dial tion sensor added to the gearbox output. The use of this signal is advantageous because the direction of rotation on the gearbox output can lead to the motor is stalled and this according to the invention by taking this directly into account Signal is prevented.

Gemäß einer ersten Ausführungsform wird das zugeführte Drehrichtungssignal der Rä­ der bzw. das Drehrichtungssignal am Getriebeabtrieb bei Erkennen eines Rück­ wärtsrollens des Fahrzeugs dazu verwendet, auf ein inverses Getriebeaufnahme- Momentenkennfeld umzuschalten. Vorzugsweise wird der Motorsteuerung daraufhin ein entsprechendes Signal bereitgestellt, welches wiederum zum Bereitstellen eines höhe­ ren Drehmomentes führt und so ein Ausgehen des Motors bei Rückwärtsrollen an Stei­ gungen verhindert. So wird beispielsweise bei geländegängigen Fahrzeugen immer ein stabiler Zustand der Antriebseinheit gewährleistet. Ferner besteht nicht die Gefahr, daß plötzlich den Fahrer unterstützende Funktionen, wie die Servolenkung oder Bremskraft­ verstärker ausfallen, was wiederum zu größerer Sicherheit und Verfügbarkeit des Fahr­ zeugs führt.According to a first embodiment, the supplied direction of rotation signal is the Ra the direction signal or the direction of rotation at the gearbox output when a reverse is detected used to roll the vehicle onto an inverse transmission mount. To switch torque map. The motor controller is then preferably switched on appropriate signal provided, which in turn for providing a height torque and thus the engine stalls when rolling backwards on a steep prevented. For example, an off-road vehicle always turns on stable condition of the drive unit guaranteed. Furthermore, there is no danger that suddenly functions that support the driver, such as power steering or braking power amplifiers fail, which in turn leads to greater safety and availability of the driver leads.

Zusätzlich oder aber auch alternativ zu dieser bevorzugten Ausführungsform wird bei Erkennen eines Rückwärtsrollens des Fahrzeugs anhand des erfaßten Drehrichtungs­ signals des mindestens einen Fahrzeugrades bzw. anhand des erfassten Drehrich­ tungssignals am Getriebeabtrieb automatisch die Fahrzeugbremse angesteuert. Das Fahrzeug wird bis zum Fahrzeugstillstand abgebremst. Alternativ dazu wird das Fahr­ zeug lediglich bis zu einer Minimalgeschwindigkeit abgebremst, bei der die Hangab­ triebskraft geringer ist als das Getriebeschleppmoment, so daß ein Ausgehen des Mo­ tors verhindert wird.In addition, or alternatively, to this preferred embodiment, at Detection of a backward rolling of the vehicle based on the detected direction of rotation signals of the at least one vehicle wheel or based on the detected turning direction signal on the transmission output automatically controls the vehicle brake. The The vehicle is braked until the vehicle comes to a standstill. Alternatively, the driving only slowed down to a minimum speed at which the hangab driving force is less than the transmission drag torque, so that the Mo tors is prevented.

Eine weitere bevorzugte Ausführungsform betrifft Fahrsituationen, wie etwa Rück­ wärtsrollen an einem Hang oder steilen Berg mit eingelegtem Vorwärtsgang (Stufe "D"), bei denen durch einen Befehl zum Schalten in den nächsthöheren Gang eine Schädi­ gung des Automatikgetriebes erfolgen würde, beispielsweise durch Zerstörung des Freilaufes. In solchen Fahrsituationen wird erfindungsgemäß das bereitgestellte Drehrichtungssignal dazu verwendet, eine Hochschaltung in den nächsthöheren Gang zu unterbinden, vorzugsweise eine Hochschaltung vom 1. Gang in den 2. Gang.Another preferred embodiment relates to driving situations, such as backward roll uphill on a slope or steep mountain with the forward gear engaged (level "D"), in which a damage is caused by a command to shift into the next higher gear automatic transmission would take place, for example by destroying the Freewheel. In such driving situations, the direction of rotation signal provided according to the invention  used to shift up to the next higher gear too prevent, preferably an upshift from 1st gear to 2nd gear.

Eine weitere bevorzugte Ausführungsform betrifft das Einlegen des Rückwärtsganges. Herkömmlicherweise ist für das Einlegen des Rückwärtsganges des Getriebes eine Ge­ schwindigkeitsschwelle vorgegeben. Um eine Schädigung des Getriebes zu vermeiden, kann üblicherweise nur unterhalb dieser Geschwindigkeitsschwelle der Rückwärtsgang eingelegt werden. Im Falle des Rückwärtsrollens des Fahrzeugs am Hang wird erfin­ dungsgemäß das bereitgestellte Drehrichtungssignal (des Fahrzeugrades/der Fahrzeu­ gräder bzw. am Getriebeabtrieb) dazu verwendet, die Geschwindigkeitsschwelle für das Einlegen des Rückwärtsganges zu höheren Geschwindigkeiten zu verschieben. Dies verbessert ebenfalls die Einsatzfähigkeit und Sicherheit des Fahrzeugs.Another preferred embodiment relates to the engagement of the reverse gear. Conventionally, there is a Ge for engaging the reverse gear of the transmission predefined speed threshold. To avoid damage to the gearbox, can usually only reverse gear below this speed threshold be inserted. If the vehicle rolls backwards on a slope, it is invented In accordance with the provided direction of rotation signal (the vehicle wheel / Fahrzeu degrees or on the gearbox output) used to set the speed threshold for the Shift into reverse to shift to higher speeds. This also improves the usability and safety of the vehicle.

Eine weitere bevorzugte Ausführungsform der vorliegenden Erfindung betrifft Fahrzeu­ ge mit einem Verteilergetriebe. Erfindungsgemäß wird bei solchen Fahrzeugen die Qualität des Schaltvorganges durch Berücksichtigen des bereitgestellten Drehrich­ tungssignals verbessert. Durch das Verwenden des Drehrichtungssignals können die einzelnen Gänge in der Getriebeposition N nachgeführt werden (nur in dieser Position ist ein Wechsel des Bereiches des Verteilergetriebes möglich). Dadurch wird die ent­ sprechende Anschlußdrehzahl und somit die Qualität des Schaltvorganges entspre­ chend sichergestellt.Another preferred embodiment of the present invention relates to vehicles with a transfer case. According to the invention in such vehicles Quality of the switching process by taking into account the rotary switch provided tion signal improved. By using the direction signal, the individual gears in the transmission position N (only in this position it is possible to change the range of the transfer case). This will ent speaking connection speed and thus the quality of the switching process correspond ensured.

Die Erfindung ist mit den folgenden Vorteilen verbunden. Zunächst wird durch Berück­ sichtigung der Fahrtrichtung des Fahrzeuges - vorzugsweise durch Berücksichtigung der Drehrichtung mindestens eines Fahrzeugrades bzw. der Drehrichtung am Getriebe­ abtrieb - ein Ausgehen des Motors unterbunden, was vor allem bei Geländefahrten zu kritischen Situationen führen kann. Ferner wird auch bei höheren Geschwindigkeiten das Einlegen des Rückwärtsganges zugelassen, was ebenfalls dem Entschärfen kriti­ scher Situationen dient. Letztendlich wird das Automatikgetriebe vor mißbräuchlichen Schaltvorgängen geschützt. Die genannten Vorteile erhöhen die Sicherheit, die Haltbar­ keit und Zuverlässigkeit eines Fahrzeugs und die Zahl möglicher Gewährleistungsfälle wird reduziert.The invention has the following advantages. First, by Berück view of the direction of travel of the vehicle - preferably by taking into account the direction of rotation of at least one vehicle wheel or the direction of rotation on the transmission downforce - prevents the engine from going out, which is especially true when driving off-road can lead to critical situations. Furthermore, even at higher speeds the engagement of reverse gear is permitted, which is also critical to the disarming situations. Ultimately, the automatic transmission will be abusive Switching operations protected. The advantages mentioned increase the security, the durability speed and reliability of a vehicle and the number of possible warranty cases is reduced.

Claims (13)

1. Verfahren zur Steuerung eines Fahrzeuggetriebes mit einem Getriebesteuerge­ rät, dadurch gekennzeichnet, daß die Fahrtrichtung des Fahrzeuges zum Ver­ meiden kritischer Fahrzeug- und/oder Getriebezustände berücksichtigt wird.1. A method of controlling a vehicle transmission with a transmission control advises, characterized in that the direction of travel of the vehicle to avoid critical vehicle and / or transmission conditions is taken into account. 2. Verfahren nach Anspruch 1, wobei die Drehrichtung mindestens eines Fahrzeu­ grades berücksichtigt wird.2. The method according to claim 1, wherein the direction of rotation of at least one vehicle degree is taken into account. 3. Verfahren nach Anspruch 1, wobei ein die Drehrichtung mindestens eines Fahr­ zeugrades darstellendes Signal dem Getriebesteuergerät zugeführt wird.3. The method of claim 1, wherein the direction of rotation of at least one drive Tool-level representing signal is supplied to the transmission control unit. 4. Verfahren nach Anspruch 1, wobei die Drehrichtung des Getriebeausganges be­ rücksichtigt wird.4. The method of claim 1, wherein the direction of rotation of the transmission output be is taken into account. 5. Verfahren nach Anspruch 4, wobei ein die Drehrichtung am Getriebeabtrieb dar­ stellendes Signal dem Getriebesteuergerät zugeführt wird.5. The method according to claim 4, wherein a represents the direction of rotation on the transmission output signal is supplied to the transmission control unit. 6. Verfahren nach einem der Ansprüche 1 bis 5, wobei bei Erkennen eines Rück­ wärtsrollens des Fahrzeugs anhand des Drehrichtungssignals auf ein inverses Getriebeaufnahme-Momentenkennfeld umgeschaltet wird.6. The method according to any one of claims 1 to 5, wherein upon detection of a return rolling of the vehicle based on the direction signal to an inverse Transmission recording torque map is switched. 7. Verfahren nach Anspruch 6, wobei der Fahrzeugmotorsteuerung zum Bereitstellen eines höheren Drehmomentes von der Getriebesteuerung ein entsprechendes Si­ gnal geliefert wird. 7. The method of claim 6, wherein the vehicle engine controller is for providing a higher torque from the transmission control a corresponding Si gnal is delivered.   8. Verfahren nach einem der Ansprüche 2 bis 7, wobei bei Erkennen eines Rück­ wärtsrollens des Fahrzeugs anhand des Drehrichtungssignals automatisch die Fahrzeugbremse angesteuert wird.8. The method according to any one of claims 2 to 7, wherein upon detection of a return the vehicle rolls automatically based on the direction signal Vehicle brake is controlled. 9. Verfahren nach Anspruch 8, wobei das Fahrzeug bis zum Stillstand abgebremst wird.9. The method according to claim 8, wherein the vehicle is braked to a standstill becomes. 10. Verfahren nach Anspruch 9, wobei das Fahrzeug auf eine minimale Geschwindig­ keit abgebremst wird.10. The method of claim 9, wherein the vehicle is at a minimum speed speed is braked. 11. Verfahren nach einem der Ansprüche 2 bis 10, wobei bei Erkennen eines Rück­ wärtsrollens des Fahrzeugs anhand des Drehrichtungssignals bei eingelegtem Vorwärtsgang eine Hochschaltung in einen höheren Gang unterbunden wird.11. The method according to any one of claims 2 to 10, wherein upon detection of a return rolling of the vehicle based on the direction signal when the Forward gear upshift to a higher gear is prevented. 12. Verfahren nach einem der Ansprüche 2 bis 11, wobei bei Erkennen eines Rück­ wärtsrollens des Fahrzeugs anhand des Drehrichtungssignals die Geschwindig­ keitsschwelle für das Einlegen des Rückwärtsganges angehoben wird.12. The method according to any one of claims 2 to 11, wherein upon detection of a return rolling the vehicle based on the direction signal the speed speed threshold is raised for engaging reverse gear. 13. Fahrzeuggetriebe-Steuervorrichtung, geeignet zur Durchführung eines Verfahrens nach einem der Ansprüche 1 bis 12.13. Vehicle transmission control device suitable for performing a method according to one of claims 1 to 12.
DE10124989A 2001-05-22 2001-05-22 Method for engine transmission operation for motor vehicles with direction of travel and transmission take into consideration to control engine to prevent critical vehicle consistons Ceased DE10124989A1 (en)

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GB0211225A GB2377475B (en) 2001-05-22 2002-05-16 Method and device for controlling a vehicle gearbox.

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FR2986298A1 (en) * 2012-01-27 2013-08-02 Renault Sa Control system for controlling torque converter in automatic transmission of car, has control unit for preventing aligning of power unit when vehicle is opposed by force generated by power unit, and deactivation unit for deactivating system
FR3000524A1 (en) * 2013-01-03 2014-07-04 Peugeot Citroen Automobiles Sa Control device for thermal powertrain of car, has correction unit correcting torque set point so as to shorten time of passage of mechanical clearances and filtering time when acquisition unit detects situation of critical life of vehicle

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GB2377475B (en) 2005-02-09
GB2377475A (en) 2003-01-15

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