WO2015018408A2 - Procédé de positionnement d'un piston - Google Patents

Procédé de positionnement d'un piston Download PDF

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Publication number
WO2015018408A2
WO2015018408A2 PCT/DE2014/200320 DE2014200320W WO2015018408A2 WO 2015018408 A2 WO2015018408 A2 WO 2015018408A2 DE 2014200320 W DE2014200320 W DE 2014200320W WO 2015018408 A2 WO2015018408 A2 WO 2015018408A2
Authority
WO
WIPO (PCT)
Prior art keywords
piston
cylinder
opening
vehicle
follow
Prior art date
Application number
PCT/DE2014/200320
Other languages
German (de)
English (en)
Other versions
WO2015018408A3 (fr
WO2015018408A9 (fr
Inventor
Marco Borowski
Alexander Renfer
Original Assignee
Schaeffler Technologies Gmbh & Co. Kg
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 Schaeffler Technologies Gmbh & Co. Kg filed Critical Schaeffler Technologies Gmbh & Co. Kg
Priority to DE112014003663.3T priority Critical patent/DE112014003663B4/de
Priority to CN201480044301.2A priority patent/CN105452697B/zh
Publication of WO2015018408A2 publication Critical patent/WO2015018408A2/fr
Publication of WO2015018408A3 publication Critical patent/WO2015018408A3/fr
Publication of WO2015018408A9 publication Critical patent/WO2015018408A9/fr

Links

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
    • 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
    • F16D25/00—Fluid-actuated clutches
    • F16D25/06—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch
    • 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
    • F16D25/00—Fluid-actuated clutches
    • F16D25/08—Fluid-actuated clutches with fluid-actuated member not rotating with a clutching member
    • 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
    • F16D25/00—Fluid-actuated clutches
    • F16D25/12—Details not specific to one of the before-mentioned types
    • 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
    • F16D48/02—Control by fluid 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
    • F16D25/00—Fluid-actuated clutches
    • F16D25/08—Fluid-actuated clutches with fluid-actuated member not rotating with a clutching member
    • F16D2025/081—Hydraulic devices that initiate movement of pistons in slave cylinders for actuating clutches, i.e. master cylinders
    • 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
    • F16D48/02—Control by fluid pressure
    • F16D2048/0212—Details of pistons for master or slave cylinders especially adapted for fluid control
    • 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
    • F16D2300/08—Details or arrangements of sealings not provided for in group F16D3/84
    • 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
    • F16D2500/50251—During operation
    • F16D2500/50263—During standing still
    • 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
    • F16D28/00—Electrically-actuated clutches

Definitions

  • the invention relates to a method having the features according to the preamble of claim 1.
  • German patent application DE 10 2012 204 635 A1 discloses a control unit with a tracking function.
  • DE 197 34 038 A1 discloses a snoop cycle in a clutch actuator with a sniffer opening and a method for learning the position of the sniffer opening.
  • the present invention describes the positioning of a piston in a master cylinder when the vehicle is not in operation in a clutch actuation of a clutch of a dual-clutch transmission with a hydrostatic clutch system.
  • Hydrostatic clutch systems are designed with a clutch actuator as shown for example in Figure 1, in DE 10 2010 047 800 A1 and DE 10 2010 047 801 A1.
  • the clutch actuator is a so-called hydrostatic clutch actuator HCA (Hydrostatic Clutch Actuator).
  • HCA Hydrostatic Clutch Actuator
  • Under such a hydrostatic actuator is an actuator with a hydrostatic transmission path, for example, a pressure line with a fluid such as hydraulic fluid to understand. The pressure in the pressure line is detected by a pressure sensor.
  • hydraulic fluid is moved in the transmission path or the pressure line, caused by the piston in the master cylinder, which moves a piston in a slave cylinder coupled by the hydraulic fluid. If the element is to hold its position, the hydraulic fluid in the transmission path rests so that there is a hydrostatic state of the hydraulic fluid that gives its name to this actuator.
  • the clutch system If the clutch system is parked in the open state (park position), ie the sniffer grooves in the piston are below the primary outer seal attached to the inner wall of the cylinder, and the temperature gradient drops to negative, ie the temperature drops from 80 ° C at -30 ° C, it comes to freezing the seal geometry. This means that at high temperatures, as they occur in the operating state, the seal is elastically flexible and lays locally in the grooves.
  • sniffing hole Schnüffelnut, sniffing opening and opening are used essentially synonymously.
  • a sniffer bore is usually located as a sniffer opening in the cylinder, while a sniffer groove is typically located as a sniffer opening in the piston.
  • the object of the present invention is to present a possibility, the fluid leakage due to the Abstellposition of the seal radially above the sniffer opening so at overlap i.e.. direct contact of seal and sniffer opening to eliminate.
  • the invention thus provides a method for controlling an actuator of an automated clutch in a motor vehicle, wherein the control of the actuator is performed with a control unit and wherein the actuator has a piston and a cylinder and a circumferentially arranged on the piston or on the cylinder sealing ring.
  • the method is provided for positioning the piston in the axial direction in the cylinder, wherein the cylinder and / or the piston has an opening in the respective lateral surface of the cylinder and / or piston, which in a piston movement in the axial direction in both directions Sealing ring can be driven over.
  • the piston ben is moved to a parking position in the cylinder, wherein the parking position is selected in the cylinder such that the sealing ring is positioned without overlapping with the opening.
  • the respective lateral surfaces are the surface of the piston and / or the inner circumferential surface of the cylinder. Overlap free means the sealing ring and opening at the parking position have no direct contact with each other.
  • the inventive method therefore has the advantage that the piston is turned off during the standstill situation of the vehicle in an area of the cylinder in which the sealing ring - when it is attached to the cylinder - completely from the smooth surface of the piston and - if he on the piston is fixed - is completely surrounded by the inner circumferential surface of the cylinder, the sealing ring thus has no contact with the opening into which he could deform disadvantageously.
  • the storage position is selected such that there is no flow connection between the opening and a fluid enclosed by the piston in the cylinder volume.
  • control unit has a follow-up time starting with ignition Off of the vehicle. Only after the follow-up time, the controller turns off.
  • the duration of the follow-up time can be predetermined.
  • the duration of the follow-up time is predetermined as a function of the fluid temperature of the fluid enclosed by the piston and cylinder.
  • the fluid temperature it is also possible to use the temperature of the actuator system or of the coupling system or of components of the actuator system or coupling system, depending on which module a temperature measurement or calculated temperature determination is available for.
  • a cooling rate of the fluid or one of the mentioned modules can also be taken into account.
  • the duration of the follow-up time is a maximum of 30 minutes.
  • the piston is positioned such that there is a flow connection between the opening and the fluid enclosed by the piston in the cylinder volume.
  • the piston when the vehicle is unlocked, the piston is positioned such that there is a flow connection between the opening and the fluid enclosed by the piston in the cylinder volume.
  • the piston upon activation of the ignition of the vehicle, the piston is positioned such that a flow connection between the opening and the fluid enclosed by the piston in the cylinder volume exists.
  • the piston in a period between the unlocking of the vehicle and the activation of the ignition of the vehicle, the piston is positioned such that there is a flow connection between the opening and the fluid enclosed by the piston in the cylinder volume.
  • the predetermined standstill situation of the vehicle is given during ignition Off of the vehicle and simultaneous non-existence of the follow-up time.
  • the predetermined standstill situation is given if in addition the vehicle is unlocked.
  • Figure 1 shows a schematic structure of a hydrostatic coupling system
  • FIG. 2 is a sectional view of a hydrostatic clutch actuator
  • FIG. 1 schematically shows the structure of a hydraulic coupling system 1 using the example of a hydraulic, hydrostatic clutch actuator (HCA), which is known from the prior art and shown schematically.
  • HCA hydraulic, hydrostatic clutch actuator
  • This schematic diagram shows only the structure for operating one of the two clutches of a dual-clutch transmission, the operation of the second clutch is analog.
  • the hydraulic clutch system 1 comprises on the encoder side 15, a control unit 2, which drives an actuator 3. In a change in position of the actuator 3 and the piston 19 in the cylinder 4 along the Aktorweges to the right, the volume of the cylinder 4 is changed, whereby a pressure P in the
  • Cylinder 4 is constructed, which via a pressure medium 7 via a hydraulic line 9 for
  • Nehmerseite 16 of the hydraulic clutch system 1 is transmitted.
  • the hydraulic line 9 is adapted with respect to its length and shape of the installation space situation of the vehicle.
  • On the slave side 16 causes the pressure P of the pressure means 7 in a cylinder 4 'a
  • the pressure P in the cylinder 4 on the encoder side 15 of the hydraulic clutch system 1 can be determined by means of a first sensor 5.
  • the first sensor 5 is preferably a pressure sensor. The distance traveled by the actuator 3 along the
  • Aktorweges is determined by means of a second sensor 6.
  • Figure 1 The schematic representation of Figure 1 is shown in Figure 2 and Figure 3 - in particular the cylinder-piston combination 4,19,100 with opening 18,140 concerning - shown in more detail.
  • the opening is located as a sniffer bore 18 in the cylinder 4 while in the figures 2 and 3, the opening is shown as Schnüffelnut 140 in the piston 100.
  • the piston 100 is not placed in software as before on the sniffer position, so not in the state "sniffing groove on, so that the seal 1 10 does not overlap with the Schnüffelnut 140 and thus not in this more or less einformt, but according to the invention in one position” Snoop Closed “parked ( Figure 3) so that tion 1 10 and Schnüffelnut 140 do not overlap and the seal 1 10 so rests only on the smooth piston surface, and thus is not in contact with the Schnüffelnut 140.
  • the snoop position ie the state "sniff opening on has the purpose that a pressure change in the master cylinder due to temperature changes by means of a surge tank 17 can be compensated.
  • a variable overrun time of the control device 2 should be enabled after ignition off (for example up to 15 minutes).
  • the piston 100 should still remain at the sniffer position, ie in the state "sniff opening remaining and only after this time has elapsed, move to the position" sniffer opening closed. "In order to further avoid an unintentional torque on the clutch when starting the engine, it should This can be done as with other systems today from the time when the vehicle is unlocked, but at the latest at “ignition on” (terminal 15).

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)

Abstract

L'invention concerne un procédé de commande d'un système actionneur d'un embrayage automatique monté dans un véhicule à moteur. La commande du système actionneur se fait au moyen d'un appareil de commande. Le système actionneur comporte un piston et un cylindre, ainsi qu'une bague d'étanchéité disposée dans le sens de la circonférence sur le piston ou sur le cylindre, afin de positionner le piston dans le sens axial dans le cylindre. Le cylindre et/ou le piston comporte un orifice, ménagé dans la surface d'enveloppe respective du cylindre et/ou du piston, par-dessus lequel la bague d'étanchéité peut passer dans les deux sens lors d'un déplacement du piston dans le sens axial. L'invention est caractérisée en ce que, dans une situation prédéfinie d'immobilisation du véhicule, le piston se déplace dans le cylindre jusqu'à une position d'arrêt qui est choisie telle que la bague d'étanchéité est positionnée sans recouvrir l'orifice.
PCT/DE2014/200320 2013-08-09 2014-07-14 Procédé de positionnement d'un piston WO2015018408A2 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE112014003663.3T DE112014003663B4 (de) 2013-08-09 2014-07-14 Verfahren zur Positionierung eines Kolbens
CN201480044301.2A CN105452697B (zh) 2013-08-09 2014-07-14 用于定位活塞的方法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013215798 2013-08-09
DE102013215798.3 2013-08-09

Publications (3)

Publication Number Publication Date
WO2015018408A2 true WO2015018408A2 (fr) 2015-02-12
WO2015018408A3 WO2015018408A3 (fr) 2015-10-01
WO2015018408A9 WO2015018408A9 (fr) 2015-11-19

Family

ID=51483183

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2014/200320 WO2015018408A2 (fr) 2013-08-09 2014-07-14 Procédé de positionnement d'un piston

Country Status (3)

Country Link
CN (1) CN105452697B (fr)
DE (2) DE112014003663B4 (fr)
WO (1) WO2015018408A2 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015212645A1 (de) * 2015-07-07 2017-01-12 Schaeffler Technologies AG & Co. KG Kupplungsaktor für ein Kraftfahrzeug mit einteiligem Statorgehäuse

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19734038A1 (de) 1996-08-16 1998-02-19 Luk Getriebe Systeme Gmbh Kraftfahrzeug und Verfahren zu dessen Betrieb
DE102010047800A1 (de) 2009-10-29 2011-05-05 Schaeffler Technologies Gmbh & Co. Kg Hydrostatischer Kupplungsaktor
DE102010047801A1 (de) 2009-10-29 2011-05-05 Schaeffler Technologies Gmbh & Co. Kg Hydrostataktor
DE102012204635A1 (de) 2011-04-07 2012-10-11 Schaeffler Technologies AG & Co. KG Verfahren zum Erlernen und Speichern von Betriebsdaten in einem Antriebsstrang eines Kraftfahrzeugs

Family Cites Families (12)

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Publication number Priority date Publication date Assignee Title
EP0922167A4 (fr) * 1996-08-30 2004-04-14 Kelsey Hayes Co Cylindre hydraulique de puissance a actionnement electrique
DE19857707A1 (de) * 1997-12-23 1999-06-24 Luk Getriebe Systeme Gmbh Kraftfahrzeug
DE19960334A1 (de) * 1999-01-08 2000-07-13 Luk Lamellen & Kupplungsbau Kraftfahrzeug
DE502005004781D1 (de) * 2004-07-08 2008-09-04 Luk Lamellen & Kupplungsbau Hydraulisches Systems zur Betätigung einer Kupplung eines Kraftfahrzeuges
DE102005029570A1 (de) * 2004-07-08 2006-02-09 Luk Lamellen Und Kupplungsbau Beteiligungs Kg Verfahren zum Betrieb eines hydraulischen Systems zur Betätigung einer Kupplung eines Kraftfahrzeuges
DE102006047299B4 (de) * 2005-10-29 2016-10-20 Schaeffler Technologies AG & Co. KG Geberzylinder für ein hydraulisches System
DE102006058976A1 (de) * 2005-12-23 2007-07-05 Luk Lamellen Und Kupplungsbau Beteiligungs Kg Geberzylinder
CN201306398Y (zh) * 2008-10-24 2009-09-09 无锡英特帕普威孚液压有限责任公司 轴式气动离合取力器
DE102008063241A1 (de) * 2008-12-16 2010-06-17 Gustav Magenwirth Gmbh & Co. Kg Hauptzylinder
DE102010053543A1 (de) * 2009-12-17 2011-06-22 Schaeffler Technologies GmbH & Co. KG, 91074 Geberzylinder
WO2011124200A1 (fr) * 2010-04-08 2011-10-13 Schaeffler Technologies Gmbh & Co. Kg Dispositif et procédé de commande
DE102011055645A1 (de) * 2011-11-23 2013-05-23 Gustav Magenwirth Gmbh & Co. Kg Hauptzylinder

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19734038A1 (de) 1996-08-16 1998-02-19 Luk Getriebe Systeme Gmbh Kraftfahrzeug und Verfahren zu dessen Betrieb
DE102010047800A1 (de) 2009-10-29 2011-05-05 Schaeffler Technologies Gmbh & Co. Kg Hydrostatischer Kupplungsaktor
DE102010047801A1 (de) 2009-10-29 2011-05-05 Schaeffler Technologies Gmbh & Co. Kg Hydrostataktor
DE102012204635A1 (de) 2011-04-07 2012-10-11 Schaeffler Technologies AG & Co. KG Verfahren zum Erlernen und Speichern von Betriebsdaten in einem Antriebsstrang eines Kraftfahrzeugs

Also Published As

Publication number Publication date
CN105452697B (zh) 2017-12-08
DE112014003663B4 (de) 2020-09-24
DE112014003663A5 (de) 2016-07-28
WO2015018408A3 (fr) 2015-10-01
DE102014213621A1 (de) 2015-02-12
CN105452697A (zh) 2016-03-30
WO2015018408A9 (fr) 2015-11-19

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