DE102007015433A1 - Method e.g. for controlling automatic gearbox in motor vehicle, involves controlling automatic gearbox in motor vehicle with motor and with torque converter by means of ECU - Google Patents
Method e.g. for controlling automatic gearbox in motor vehicle, involves controlling automatic gearbox in motor vehicle with motor and with torque converter by means of ECU Download PDFInfo
- Publication number
- DE102007015433A1 DE102007015433A1 DE102007015433A DE102007015433A DE102007015433A1 DE 102007015433 A1 DE102007015433 A1 DE 102007015433A1 DE 102007015433 A DE102007015433 A DE 102007015433A DE 102007015433 A DE102007015433 A DE 102007015433A DE 102007015433 A1 DE102007015433 A1 DE 102007015433A1
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- Germany
- Prior art keywords
- speed
- motor vehicle
- motor
- automatic gearbox
- creep
- 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.)
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Classifications
-
- 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
- F16H61/20—Preventing gear creeping ; Transmission control during standstill, e.g. hill hold control
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- 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
- F16H2059/366—Engine or motor speed
-
- 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
- F16H59/38—Inputs being a function of speed of gearing elements
- F16H2059/385—Turbine speed
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Transmission Device (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
Abstract
Description
Die Erfindung bezieht sich auf ein Verfahren zur Steuerung eines automatischen Getriebes in einem Kraftfahrzeug mit einem Antriebsmotor und mit einem Drehmomentwandler nach dem Oberbegriff des Patentanspruchs 1.The The invention relates to a method for controlling an automatic Getriebees in a motor vehicle with a drive motor and with a Torque converter according to the preamble of patent claim 1.
Ein
derartiges Verfahren ist beispielsweise aus der
Das Verfahren bezieht sich insbesondere auf automatische Getriebe, die über einen hydrodynamischen Drehmomentwandler mit der Brennkraftmaschine des Kraftfahrzeuges verbunden sind. Der Drehmomentwandler weist eine motorseitige Pumpe und eine getriebeseitige Turbine auf. Die Pumpe ist mit der Brennkraftmaschine derart gekoppelt, dass ihre Drehzahl der Drehzahl der Brennkraftmaschine entspricht. Beispielsweise bei Stillstand des Kraftfahrzeuges würde ohne eine als Kriechverminderung bezeichneten Funktion die Pumpe mit einer der Leerlaufdrehzahl der Brennkraftmaschine entsprechenden Drehzahl die getriebeseitige Turbine derart antreiben, dass ohne Betätigung des Bremssystems ein so genanntes Kriechen des Kraftfahrzeuges auftreten würde.The Method refers in particular to automatic transmissions over a hydrodynamic torque converter with the internal combustion engine of the motor vehicle are connected. The torque converter points an engine-side pump and a transmission-side turbine. The Pump is coupled to the internal combustion engine such that their Speed of the speed of the internal combustion engine corresponds. For example at a standstill of the motor vehicle would without one as Creep reduction function designated the pump with one of the Idling speed of the engine corresponding speed drive the transmission-side turbine so that without actuation the brake system, a so-called creep of the motor vehicle occur would.
Die Kriechverminderung bzw. Kriechverhinderung wird beispielsweise durch Hochschaltvorgänge ausgehend von einem momentan vorgewählten Gang oder durch Reduzierung des Druckes in der für den momentan vorgewählten Gang zuständigen Kupplung realisiert.The Creep reduction or creep prevention is for example by Upshifts starting from a currently preselected gear or by reducing the pressure in the for the moment Selective gear responsible clutch realized.
Bei
dem aus der
Weiterhin
ist aus der
Es ist Aufgabe der Erfindung, ein Verfahren eingangs genannter Art im Hinblick auf eine Reduzierung des Kraftstoffverbrauchs zu verbessern.It Object of the invention, a method of the type mentioned with a view to reducing fuel consumption.
Diese Aufgabe wird durch die Merkmale des Patentanspruchs 1 gelöst. Vorteilhafte Weiterbildungen der Erfindung sind die Gegenstände der abhängigen Patentansprüche.These The object is solved by the features of claim 1. Advantageous developments of the invention are the objects the dependent claims.
Bei dem erfindungsgemäßen Verfahren zur Steuerung eines automatischen Getriebes in einem Kraftfahrzeug mit einem Antriebsmotor und mit einem hydrodynamischen Drehmomentwandler wird mittels eines elektronischen Steuergeräts, das die Motordrehzahl und die Turbinendrehzahl als Eingangsgrößen erfasst, abhängig von mindestens einer Bedingung eine Kriechverminderung aktiviert. Die Motordrehzahl ist die Drehzahl des Antriebsmotors (z. B. Brennkraftmaschine) und die Turbinendrehzahl ist die Drehzahl der Turbine des Drehmomentwandlers. Unter Motordrehzahl bzw. unter Turbinendrehzahl werden auch alle zur Motordrehzahl bzw. zur Turbinendrehzahl proportionalen Größen verstanden. Erfindungsgemäß wird die Kriechverminderung dann aktiviert, wenn die Differenz zwischen der Turbinendrehzahl und der Motordrehzahl einen vorgegebenen Drehzahlgrenzwert überschreitet.at the method of the invention for control an automatic transmission in a motor vehicle with a drive motor and with a hydrodynamic torque converter is by means of a electronic control unit, which determines the engine speed and detects the turbine speed as input variables, Creep reduction depending on at least one condition activated. The engine speed is the speed of the drive motor (eg, internal combustion engine) and the turbine speed is the speed the turbine of the torque converter. Under engine speed or under Turbine speed are also all to the engine speed or to the turbine speed understood proportional sizes. According to the invention the creep reduction then activates when the difference between the turbine speed and the engine speed exceeds a predetermined speed limit.
Dieser Drehzahlgrenzwert ist vorzugsweise zumindest nahezu Null und die Kriechverminderung wird vorzugsweise nur im Leerlauf des Antriebsmotors aktiviert.This Speed limit is preferably at least almost zero and the Creep reduction is preferably only at idle of the drive motor activated.
Durch die Erfindung wird also die Funktion der Kriechverminderung oder der Kriechverhinderung bereits beim Ausrollen vor dem Stillstand des Kraftfahrzeuges eingeschaltet, sobald insbesondere der Wert der Turbinendrehzahl unter den Wert der Leerlauf-Motordrehzahl fällt.By The invention thus becomes the function of creep reduction or the creep prevention already during coasting before standstill of the motor vehicle turned on, as soon as the value the turbine speed falls below the value of the idle engine speed.
Hierdurch wird der Verbrauch gesenkt, da bei einem Bremsvorgang nicht gegen den Wandler gebremst werden muss. Zudem wird der Komfort beim Ausrollen des Kraftfahrzeuges erhöht, da sowohl die Kriechneigung als auch ein Bremsenknarzen verhindert wird.hereby the consumption is lowered, since during a braking operation not against the converter must be braked. In addition, the comfort when rolling out of the motor vehicle increases, as both the creeping as well as a Bremsenknarzen is prevented.
Zur Optimierung der Verbrauchsreduzierung wäre ein vollständiges Öffnen der für den momentan vorgewählten Gang zuständigen Kupplung vorteilhaft, da in diesem Fall keine Momentübertragung zum Getriebeabtrieb erfolgt und für den Motor somit keine zusätzliche Last existiert (Kriechverhinderung). Wird jedoch die Kupplung vollständig geöffnet, müsste zu Beginn des Schließvorgangs beim Ausschalten der Kriechverhinderung das Kupplungslüftspiel überwunden werden, um dann erst die Kupplungslamellen zum Anliegen zu bringen. Da dieser Vorgang schnell ablaufen muss, um ein reaktionsschnelles Anfahren des Kraftfahrzeuges zu ermöglichen, würde beim Anlegen der Lamellen ein Komfort verschlechternder Stoß auftreten.to Optimizing the consumption reduction would be a complete opening the responsible for the currently selected gear Coupling advantageous because in this case no torque transfer to Transmission output takes place and therefore no additional for the engine Last exists (creep prevention). However, the clutch is complete open, would have to start the closing process when switching off the creep prevention overcome the clutch clearance then only to bring the clutch plates to the concern. Since this process must run quickly to a responsive startup enable the motor vehicle, would Applying the slats a comfort worsening shock will occur.
Daher wird vorzugsweise mittels einer Kupplungsdrucksteuerung die für den momentan vorgewählten Gang zuständige Kupplung nur so weit geöffnet, dass das Luftspiel überwunden bleibt und die Lamellen schleifen (Kriechverminderung). Es soll nur ein minimales Moment übertragen werden. Einem derartigen gewünschten Kupplungszustand kann eine entsprechende Kupplungsdrehzahl der antriebsseitigen Kupplungselemente zugeordnet werden. Der in den Patentansprüchen verwendete Begriff Kriechverminderung soll inhaltlich im Extremfall auch eine Kriechverhinderung umfassen. Die Kriechverminderung einschließlich Kriechverhinderung wird auch als Standabkopplung bezeichnet.Therefore, preferably by means of a clutch pressure control, the responsible for the currently selected gear clutch is opened only so far that the air play is overcome and the blades grind (creep reduction). It should be transmitted only a minimal moment. Such a desired coupling state, a corresponding clutch speed of the drive be assigned to the side coupling elements. The term creep reduction used in the claims is intended to include a content in extreme cases, a creep prevention. Creep reduction including creep prevention is also referred to as stall decoupling.
ZITATE ENTHALTEN IN DER BESCHREIBUNGQUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- - DE 4446077 C2 [0002, 0005] - DE 4446077 C2 [0002, 0005]
- - DE 102005021924 A1 [0006, 0006] - DE 102005021924 A1 [0006, 0006]
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007015433.1A DE102007015433B4 (en) | 2007-03-30 | 2007-03-30 | Method for controlling an automatic transmission in a motor vehicle with a drive motor and with a torque converter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007015433.1A DE102007015433B4 (en) | 2007-03-30 | 2007-03-30 | Method for controlling an automatic transmission in a motor vehicle with a drive motor and with a torque converter |
Publications (2)
Publication Number | Publication Date |
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DE102007015433A1 true DE102007015433A1 (en) | 2008-10-02 |
DE102007015433B4 DE102007015433B4 (en) | 2022-08-25 |
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Application Number | Title | Priority Date | Filing Date |
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DE102007015433.1A Active DE102007015433B4 (en) | 2007-03-30 | 2007-03-30 | Method for controlling an automatic transmission in a motor vehicle with a drive motor and with a torque converter |
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Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6250241A (en) * | 1985-08-28 | 1987-03-04 | Nissan Motor Co Ltd | Creep prevention device for automatic transmission gear |
US4803901A (en) * | 1985-10-07 | 1989-02-14 | Toyota Jidosha Kabushiki Kaisha | Method and system for detecting the rotation rate of the output shaft of a torque converter |
DE19731979A1 (en) * | 1996-07-24 | 1998-01-29 | Nissan Motor | Creep suppression control device for automatic transmission |
DE19835661A1 (en) * | 1997-08-08 | 1999-05-06 | Jatco Corp | Idle control device for an automatic transmission |
DE4446077C2 (en) | 1994-12-22 | 2003-10-30 | Bayerische Motoren Werke Ag | Method for controlling an automatic transmission for reducing creep in motor vehicles |
DE10001164B4 (en) * | 1999-01-13 | 2006-04-27 | Suzuki Motor Corp., Hamamatsu | Control system of an automatic transmission and method for controlling an automatic transmission in its neutral position |
DE102005021924A1 (en) | 2005-05-12 | 2006-11-16 | Zf Friedrichshafen Ag | Control method for automatic transmission of motor vehicle involves disengaging static function of automatic transmission when vehicle speed and turbine characteristic parameter of e.g. torque converter is lower than predetermined value |
-
2007
- 2007-03-30 DE DE102007015433.1A patent/DE102007015433B4/en active Active
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6250241A (en) * | 1985-08-28 | 1987-03-04 | Nissan Motor Co Ltd | Creep prevention device for automatic transmission gear |
US4803901A (en) * | 1985-10-07 | 1989-02-14 | Toyota Jidosha Kabushiki Kaisha | Method and system for detecting the rotation rate of the output shaft of a torque converter |
DE4446077C2 (en) | 1994-12-22 | 2003-10-30 | Bayerische Motoren Werke Ag | Method for controlling an automatic transmission for reducing creep in motor vehicles |
DE19731979A1 (en) * | 1996-07-24 | 1998-01-29 | Nissan Motor | Creep suppression control device for automatic transmission |
DE19835661A1 (en) * | 1997-08-08 | 1999-05-06 | Jatco Corp | Idle control device for an automatic transmission |
DE10001164B4 (en) * | 1999-01-13 | 2006-04-27 | Suzuki Motor Corp., Hamamatsu | Control system of an automatic transmission and method for controlling an automatic transmission in its neutral position |
DE102005021924A1 (en) | 2005-05-12 | 2006-11-16 | Zf Friedrichshafen Ag | Control method for automatic transmission of motor vehicle involves disengaging static function of automatic transmission when vehicle speed and turbine characteristic parameter of e.g. torque converter is lower than predetermined value |
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DE102007015433B4 (en) | 2022-08-25 |
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