DE10244393B4 - Method for determining the point of engagement of a hydraulically actuated clutch - Google Patents
Method for determining the point of engagement of a hydraulically actuated clutch Download PDFInfo
- Publication number
- DE10244393B4 DE10244393B4 DE10244393A DE10244393A DE10244393B4 DE 10244393 B4 DE10244393 B4 DE 10244393B4 DE 10244393 A DE10244393 A DE 10244393A DE 10244393 A DE10244393 A DE 10244393A DE 10244393 B4 DE10244393 B4 DE 10244393B4
- Authority
- DE
- Germany
- Prior art keywords
- clutch
- point
- pressure
- engagement
- hydraulic cylinder
- 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 - Fee Related
Links
Images
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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D48/00—External control of clutches
- F16D48/06—Control by electric or electronic means, e.g. of fluid pressure
- F16D48/066—Control of fluid pressure, e.g. using an accumulator
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D48/00—External control of clutches
- F16D48/06—Control by electric or electronic means, e.g. of fluid pressure
- F16D48/062—Control by electric or electronic means, e.g. of fluid pressure of a clutch system with a plurality of fluid actuated clutches
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2300/00—Special features for couplings or clutches
- F16D2300/14—Clutches which are normally open, i.e. not engaged in released state
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2500/00—External control of clutches by electric or electronic means
- F16D2500/10—System to be controlled
- F16D2500/102—Actuator
- F16D2500/1026—Hydraulic
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2500/00—External control of clutches by electric or electronic means
- F16D2500/30—Signal inputs
- F16D2500/302—Signal inputs from the actuator
- F16D2500/3024—Pressure
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2500/00—External control of clutches by electric or electronic means
- F16D2500/50—Problem to be solved by the control system
- F16D2500/501—Relating the actuator
- F16D2500/5014—Filling the actuator cylinder with fluid
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2500/00—External control of clutches by electric or electronic means
- F16D2500/50—Problem to be solved by the control system
- F16D2500/502—Relating the clutch
- F16D2500/50245—Calibration or recalibration of the clutch touch-point
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2500/00—External control of clutches by electric or electronic means
- F16D2500/70—Details about the implementation of the control system
- F16D2500/702—Look-up tables
- F16D2500/70205—Clutch actuator
- F16D2500/70217—Pressure
Abstract
Verfahren zur Bestimmung des Eingriffspunkts (t3) einer hydraulisch betätigten Kupplung (12), wobei ein Hydraulikfluid in einen die Kupplung (12) betätigenden Hydraulikzylinder (14) strömt, wobei ein Druckverlauf (44) am Hydraulikzylinder (14) gemessen wird, dadurch gekennzeichnet, dass der Eingriffspunkt der Kupplung (12) mittels eines Wendepunktes des Druckverlaufs am Hydraulikzylinder (14) ermittelt wird, wobei der Wendepunkt des Druckverlaufs mittels der ersten Ableitung des Druckverlaufs am Hydraulikzylinder (14) nach der Zeit ermittelt wird.Method for determining the engagement point (t3) of a hydraulically actuated clutch (12), wherein a hydraulic fluid flows into a hydraulic cylinder (14) actuating the clutch (12), wherein a pressure profile (44) is measured on the hydraulic cylinder (14), characterized in that the point of engagement of the clutch (12) is determined by means of an inflection point of the pressure curve on the hydraulic cylinder (14), wherein the inflection point of the pressure profile is determined by means of the first derivative of the pressure profile on the hydraulic cylinder (14) after the time.
Description
Die Erfindung betrifft ein Verfahren zur Bestimmung des Eingriffspunkts einer hydraulisch betätigten Kupplung, insbesondere in einem Doppelkupplungsgetriebe eines Kraftfahrzeugs.The invention relates to a method for determining the engagement point of a hydraulically actuated clutch, in particular in a dual-clutch transmission of a motor vehicle.
In Kraftfahrzeugen mit einer hydraulisch betätigten Kupplung soll diese schnell und zuverlässig angesteuert werden. Um insbesondere eine nasse Kupplung präzise steuern zu können, ist die Kenntnis einer Arbeitskennlinie, die das übergegangene Drehmoment in Abhängigkeit von dem hydraulischen Druck beschreibt, erforderlich. Diese Arbeitskennlinie ist jedoch von den Betriebsumständen, insbesondere der Temperatur, abhängig. Der Eingriffspunkt der Kupplung ist derjenige Punkt auf der Arbeitskennlinie, an dem eine Übertragung von Drehmoment beginnt.In motor vehicles with a hydraulically actuated clutch, this should be controlled quickly and reliably. In order to be able to precisely control, in particular, a wet clutch, it is necessary to know a working characteristic which describes the transferred torque as a function of the hydraulic pressure. However, this working characteristic is dependent on the operating conditions, in particular the temperature. The point of engagement of the clutch is the point on the working characteristic at which transmission of torque begins.
Die
Die
Der Erfindung liegt daher die Aufgabe zugrunde, ein Verfahren anzugebend, wobei die Bestimmung des Eingriffspunkts einer hydraulisch betätigten Kupplung mit geringem Aufwand, insbesondere auf kostengünstige Weise ermöglicht ist.The invention is therefore based on the object of specifying a method, wherein the determination of the point of engagement of a hydraulically actuated clutch is made possible with little effort, in particular in a cost-effective manner.
Diese Aufgabe wird nach der Erfindung durch die Merkmale des unabhängigen Anspruchs gelöst. Weitere Vorteile und Einzelheiten der Erfindung ergeben sich aus den Unteransprüchen und aus der nachfolgenden Beschreibung bevorzugter Ausführungsbeispiele anhand der Zeichnungen.This object is achieved according to the invention by the features of the independent claim. Further advantages and details of the invention will become apparent from the dependent claims and from the following description of preferred embodiments with reference to the drawings.
In den Zeichnungen zeigt:In the drawings shows:
In
Die Steuerung des Systems erfolgt durch eine Recheneinheit
Anhand von
Zu Beginn des rampenförmigen Druckanstiegs bei t0 ist der Steuerstrom I null und die Drücke PA und PB sind ebenfalls annähernd null. Der Strom I wird nun rampenförmig erhöht in hinreichend kleinen Inkrementen. Bis zum Zeitpunkt t1 ist das Ventil
Gemäß der Erfindung ist erkannt worden, dass sich der Zeitpunkt des Eingriffs der Kupplung als der Zeitpunkt t3 bestimmen läßt, in dem die Druckverlaufskurve
Der Drucksensor
Insbesondere bei Doppelkupplungsgetrieben besteht häufig der Bedarf, beide Kupplungen überschneidend derart zu steuern, dass die eine Kupplung exakt dann einzugreifen beginnt, wenn die andere zu öffnen beginnt. Dabei muß ein gleichzeitiges volles Greifen unter allen Umständen vermieden werden. Die Ermittlung des Eingriffspunkts der Kupplung in lastfreiem Zustand ermöglicht es nun, diesen Eingriffspunkt unter den aktuell gültigen Betriebsparametern zu ermitteln und einzustellen. So kann ein Überschneiden des Kupplungseingriffs beider Kupplungen unter Vermeidung eines gleichzeitigen vollen Greifens exakt gesteuert werden, etwa mit Hilfe eines Microcontrollers als eine Recheneinheit.In particular, in dual-clutch transmissions, there is often a need to control both clutches overlapping such that the one clutch begins to intervene exactly when the other begins to open. At the same time, simultaneous full gripping must be avoided under all circumstances. The determination of the engagement point of the clutch in no-load condition now makes it possible to determine and set this engagement point under the currently valid operating parameters. Thus, an overlapping of the clutch engagement of both clutches can be precisely controlled while avoiding simultaneous full gripping, for example with the aid of a microcontroller as a computing unit.
BezugszeichenlisteLIST OF REFERENCE NUMBERS
- 1010
- Vorrichtung zur Bestimmung des EingriffspunktsDevice for determining the point of intervention
- 1212
- Kupplungclutch
- 1414
- Hydraulikzylinderhydraulic cylinders
- 1616
- Stempelstamp
- 1818
- RückstellfedernReturn springs
- 2020
- Pumpepump
- 2222
- VentilValve
- 2424
- Drosselthrottle
- 2626
- Drucksensorpressure sensor
- 2828
- Drucksensorpressure sensor
- 3030
- Recheneinheitcomputer unit
- 3232
- Sensorleitungensensor Cable
- 3434
- Sensorleitungensensor Cable
- 3636
- Steuerleitungcontrol line
- 4040
- Diagrammdiagram
- 4242
- Stromkurvecurrent curve
- 4444
- DruckverlaufskurvePressure curve
Claims (4)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10244393A DE10244393B4 (en) | 2002-09-24 | 2002-09-24 | Method for determining the point of engagement of a hydraulically actuated clutch |
PCT/EP2003/009259 WO2004029472A1 (en) | 2002-09-24 | 2003-08-21 | Method and device for determining the point of engagement of a hydraulically actuated clutch |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10244393A DE10244393B4 (en) | 2002-09-24 | 2002-09-24 | Method for determining the point of engagement of a hydraulically actuated clutch |
Publications (2)
Publication Number | Publication Date |
---|---|
DE10244393A1 DE10244393A1 (en) | 2004-04-01 |
DE10244393B4 true DE10244393B4 (en) | 2013-03-28 |
Family
ID=31969504
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE10244393A Expired - Fee Related DE10244393B4 (en) | 2002-09-24 | 2002-09-24 | Method for determining the point of engagement of a hydraulically actuated clutch |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE10244393B4 (en) |
WO (1) | WO2004029472A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102015109600B3 (en) * | 2015-06-16 | 2016-11-03 | Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr | Method for determining the point of engagement of a hydraulically actuated clutch |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2893686B1 (en) * | 2005-11-22 | 2009-05-08 | Renault Sas | HYDRAULIC CONTROL DEVICE OF A CLUTCH AND METHOD FOR DETERMINING THE DEAD STROKE OF THE PISTON OF A TRANSMITTER CYLINDER OF SUCH A CONTROL DEVICE |
DE102006042356A1 (en) * | 2006-09-08 | 2008-03-27 | Zf Friedrichshafen Ag | Method for detecting the application point of a clutch, in particular a wet starting clutch |
US8062174B2 (en) | 2007-10-27 | 2011-11-22 | GM Global Technology Operations LLC | Method and apparatus to control clutch stroke volume in an electro-mechanical transmission |
DE102007057081B4 (en) | 2007-11-21 | 2009-12-24 | Bayerische Motoren Werke Aktiengesellschaft | Method for setting a point of engagement of a friction clutch |
DE102009004709B4 (en) * | 2008-01-24 | 2019-08-14 | Schaeffler Technologies AG & Co. KG | Dual-clutch transmission and method for controlling a dual-clutch transmission |
DE102008030034B4 (en) | 2008-06-12 | 2010-04-29 | Bayerische Motoren Werke Aktiengesellschaft | Method for kisspoint adaptation |
DE102008030033B4 (en) | 2008-06-12 | 2010-04-29 | Bayerische Motoren Werke Aktiengesellschaft | Method for kisspoint adaptation |
DE102009059081B4 (en) | 2008-12-22 | 2021-04-22 | Volkswagen Ag | Method for the hydraulic actuation of a clutch |
DE102009053693B4 (en) * | 2009-11-18 | 2021-09-16 | Vitesco Technologies Germany Gmbh | Method for determining a point of application of a clutch as well as clutch and assistance system |
DE102009053885B4 (en) | 2009-11-20 | 2015-10-29 | Getrag Getriebe- Und Zahnradfabrik Hermann Hagenmeyer Gmbh & Cie Kg | Method for kisspoint adaptation |
US8346451B2 (en) | 2010-02-23 | 2013-01-01 | GM Global Technology Operations LLC | Realtime estimation of clutch piston position |
DE102010046138B4 (en) | 2010-09-14 | 2021-05-06 | Magna Pt B.V. & Co. Kg | Setting procedure for hybrid DCTs |
DE102012021211B4 (en) | 2012-10-24 | 2016-04-07 | Getrag Getriebe- Und Zahnradfabrik Hermann Hagenmeyer Gmbh & Cie Kg | A method for determining an adjustment parameter in a hydraulic actuator assembly for a motor vehicle drive train and method for actuating a friction clutch of a motor vehicle drive train |
DE102016219243A1 (en) * | 2016-10-05 | 2018-04-05 | Schaeffler Technologies AG & Co. KG | Method for controlling a hydraulic gear actuator assembly |
BE1028064B1 (en) * | 2020-02-18 | 2021-09-13 | Punch Powertrain Psa E Trans Nv | Method for determining a coupling point of engagement |
DE102020125334A1 (en) | 2020-09-29 | 2022-03-31 | Schaeffler Technologies AG & Co. KG | Method for controlling a clutch device, control device for controlling a clutch device and computer program product |
DE102022107941A1 (en) * | 2021-04-22 | 2022-10-27 | Schaeffler Technologies AG & Co. KG | Method for determining a touch point of a torque transmission device |
Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4011850A1 (en) * | 1989-04-17 | 1990-10-18 | Luk Lamellen & Kupplungsbau | Automatically clutch of motor vehicle - using processor program for engagement following automatic determination of clutch biting point |
DE4434111A1 (en) * | 1994-09-23 | 1996-03-28 | Kongsberg Automotive Technolog | Control for an automatically operated clutch |
US5578904A (en) * | 1991-11-29 | 1996-11-26 | Caterpillar Inc. | Method and apparatus for determining the position of an armature of an electromagnetic actuator in response to the magnitude and time derivative of the actuator coil current |
DE69302121T2 (en) * | 1992-03-14 | 1996-11-28 | Eaton Corp | Self-adjusting clutch actuator |
DE19633420A1 (en) * | 1995-09-15 | 1997-03-20 | Ebern Fahrzeugtech Gmbh | Clutch control system particularly for motor vehicle |
DE69400834T2 (en) * | 1993-03-19 | 1997-05-15 | Eaton Corp | Touch point detection method of a clutch |
DE69402920T2 (en) * | 1993-07-19 | 1997-12-11 | Eaton Corp | Touch point detection algorithm for automatic clutch control unit |
DE69224256T2 (en) * | 1991-10-07 | 1998-09-10 | Eaton Corp | Start and creep control for automatic clutch |
US5853076A (en) * | 1996-06-27 | 1998-12-29 | Case Corporation | Method and apparatus for calibrating clutch fill rates |
DE19951946A1 (en) * | 1998-11-03 | 2000-05-04 | Luk Getriebe Systeme Gmbh | Method of running a motor vehicle that uses hydraulic fluid pressure to generate a characteristic clutch curve. |
DE19939818C1 (en) * | 1999-08-21 | 2001-01-25 | Daimler Chrysler Ag | Automobile drive transmission control method uses 2 parallel clutches controlled via electronic drive control during gear changing |
-
2002
- 2002-09-24 DE DE10244393A patent/DE10244393B4/en not_active Expired - Fee Related
-
2003
- 2003-08-21 WO PCT/EP2003/009259 patent/WO2004029472A1/en not_active Application Discontinuation
Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4011850A1 (en) * | 1989-04-17 | 1990-10-18 | Luk Lamellen & Kupplungsbau | Automatically clutch of motor vehicle - using processor program for engagement following automatic determination of clutch biting point |
DE69224256T2 (en) * | 1991-10-07 | 1998-09-10 | Eaton Corp | Start and creep control for automatic clutch |
US5578904A (en) * | 1991-11-29 | 1996-11-26 | Caterpillar Inc. | Method and apparatus for determining the position of an armature of an electromagnetic actuator in response to the magnitude and time derivative of the actuator coil current |
DE69302121T2 (en) * | 1992-03-14 | 1996-11-28 | Eaton Corp | Self-adjusting clutch actuator |
DE69400834T2 (en) * | 1993-03-19 | 1997-05-15 | Eaton Corp | Touch point detection method of a clutch |
DE69402920T2 (en) * | 1993-07-19 | 1997-12-11 | Eaton Corp | Touch point detection algorithm for automatic clutch control unit |
DE4434111A1 (en) * | 1994-09-23 | 1996-03-28 | Kongsberg Automotive Technolog | Control for an automatically operated clutch |
DE19633420A1 (en) * | 1995-09-15 | 1997-03-20 | Ebern Fahrzeugtech Gmbh | Clutch control system particularly for motor vehicle |
US5853076A (en) * | 1996-06-27 | 1998-12-29 | Case Corporation | Method and apparatus for calibrating clutch fill rates |
DE19951946A1 (en) * | 1998-11-03 | 2000-05-04 | Luk Getriebe Systeme Gmbh | Method of running a motor vehicle that uses hydraulic fluid pressure to generate a characteristic clutch curve. |
DE19939818C1 (en) * | 1999-08-21 | 2001-01-25 | Daimler Chrysler Ag | Automobile drive transmission control method uses 2 parallel clutches controlled via electronic drive control during gear changing |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102015109600B3 (en) * | 2015-06-16 | 2016-11-03 | Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr | Method for determining the point of engagement of a hydraulically actuated clutch |
Also Published As
Publication number | Publication date |
---|---|
WO2004029472A1 (en) | 2004-04-08 |
DE10244393A1 (en) | 2004-04-01 |
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OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
8110 | Request for examination paragraph 44 | ||
R084 | Declaration of willingness to licence |
Effective date: 20120526 |
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R016 | Response to examination communication | ||
R016 | Response to examination communication | ||
R018 | Grant decision by examination section/examining division | ||
R020 | Patent grant now final |
Effective date: 20130629 |
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R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |