WO2012075983A1 - Système hydraulique pour une transmission à double embrayage - Google Patents

Système hydraulique pour une transmission à double embrayage Download PDF

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Publication number
WO2012075983A1
WO2012075983A1 PCT/DE2011/001901 DE2011001901W WO2012075983A1 WO 2012075983 A1 WO2012075983 A1 WO 2012075983A1 DE 2011001901 W DE2011001901 W DE 2011001901W WO 2012075983 A1 WO2012075983 A1 WO 2012075983A1
Authority
WO
WIPO (PCT)
Prior art keywords
gear
hydraulic system
control valve
valve
pressure
Prior art date
Application number
PCT/DE2011/001901
Other languages
German (de)
English (en)
Inventor
Roshan Willeke
Eric MÜLLER
Martin Staudinger
Original Assignee
Schaeffler Technologies AG & 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 AG & Co. KG filed Critical Schaeffler Technologies AG & Co. KG
Priority to JP2013542370A priority Critical patent/JP5901648B2/ja
Priority to CN201180057325.8A priority patent/CN103228961B/zh
Priority to DE112011104311T priority patent/DE112011104311A5/de
Publication of WO2012075983A1 publication Critical patent/WO2012075983A1/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
    • 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
    • F16H61/26—Generation or transmission of movements for final actuating mechanisms
    • F16H61/28—Generation or transmission of movements for final actuating mechanisms with at least one movement of the final actuating mechanism being caused by a non-mechanical force, e.g. power-assisted
    • F16H61/30—Hydraulic or pneumatic motors or related fluid control means therefor
    • 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
    • F16H61/02—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 characterised by the signals used
    • F16H61/0202—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 characterised by the signals used the signals being electric
    • F16H61/0204—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 characterised by the signals used the signals being electric for gearshift control, e.g. control functions for performing shifting or generation of shift signal
    • F16H61/0206—Layout of electro-hydraulic control circuits, e.g. arrangement of valves
    • 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
    • F16H61/68—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 specially adapted for stepped gearings
    • F16H61/684—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 specially adapted for stepped gearings without interruption of drive
    • F16H61/688—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 specially adapted for stepped gearings without interruption of drive with two inputs, e.g. selection of one of two torque-flow paths by clutches

Definitions

  • the invention relates to a hydraulic system for driving a dual-clutch transmission with four gear actuators.
  • German Offenlegungsschrift DE 10 2008 031 483 A1 discloses a dual-clutch transmission with a device for controlling a plurality of hydraulic shift cylinders. To improve the speed when engaging a gear required for gear shift cylinders are controlled by means of at least three electromagnetically switchable directional control valves.
  • the object of the invention is to simplify the driving of a dual-clutch transmission with four gear actuators.
  • the object is achieved in a hydraulic system for driving a dual-clutch transmission with four gear actuators in that the gear actuators a volume flow control valve and a pressure control valve are connected upstream so that the gear selector in response to the shift position of a gear selector valve when inserting a gear volumenstromge- controls and pressure-controlled.
  • the gear regulators include, for example, a shift cylinder in which a gear actuator piston is reciprocally movable to actuate a shift rail.
  • a preferred embodiment of the hydraulic system is characterized in that the volume flow control valve and the pressure control valve are designed as 3/2-way valves.
  • the 3/2-way valves each include a tank port and a pressure port to which a hydraulic pressure source is connected.
  • volume flow control valve and the pressure control valve are continuously adjustable and electrically actuated.
  • the two valves are preferably designed as proportional valves.
  • the gear selector valve is designed as a 4/2-way valve.
  • the gear selector valve is preferably designed as a switching valve with two switching positions.
  • the volume flow control valve is connected to a first connection of the gear selector valve.
  • To a second connection of the gear selector valve the pressure control valve is connected.
  • To a third port of the gear selector valve a B-side of a first gear pair is connected.
  • To a fourth port of the gear selector valve, a B-side of a second gear actuator pair is connected.
  • the volume flow control valve to the B side of the second gear set pair and the pressure control valve to the B side of the first gear set pair are connected.
  • the volume flow control valve with the B side of the first gear set pair and the pressure control valve with the B side of the second gear set pair are connected.
  • a further preferred embodiment of the hydraulic system is characterized in that the gear plates are combined in pairs and connected to each other via a connecting line on an A-side.
  • a first and a second gear shifter form the first gear pair.
  • a third and a fourth gear plate form the second gear pair.
  • Another preferred exemplary embodiment of the hydraulic system is characterized in that the gear actuators on a B side are connected to the volume flow control valve or the pressure regulating valve as a function of the switching position of the gear selector valve.
  • Another preferred embodiment of the hydraulic system is characterized in that the A side of a first gear set pair is connected to a branch which is arranged between the flow control valve and the gear selector valve is. About the connecting line and the junction are the A-sides of all gear shifter with each other.
  • a further preferred embodiment of the hydraulic system is characterized in that between the gear actuators of a gear plate pair each have a locking device is arranged, which is controlled via a switching valve.
  • the switching valve is preferably designed as a 3/2-way valve.
  • the locking device serves to lock each one gear regulator one of the gear actuator pairs.
  • Another preferred embodiment of the hydraulic system is characterized in that two clutches of the dual-clutch transmission in each case a volume flow control valve is connected upstream.
  • the two volume flow control valves are preferably also designed as 3/2-way valves.
  • the volume flow control valves upstream of the clutches are preferably designed in the same way as the volume flow control valve arranged upstream of the gear actuators.
  • the invention further relates to a method for driving a dual-clutch transmission with a hydraulic system described above.
  • the hydraulic system is subjected to a system pressure, for example, by means of a hydraulic pump.
  • the hydraulic system further preferably comprises a hydraulic pressure accumulator which is filled with hydraulic medium by means of the hydraulic pump.
  • Figure 1 is a hydraulic system according to the invention in the form of a hydraulic circuit diagram
  • Figure 2 shows an enlarged detail of Figure 1 with an arranged between two gear actuators locking device and
  • FIG. 3 shows an enlarged and detailed illustration of the locking device from FIG. 2.
  • FIG. 1 shows a hydraulic plan of a hydraulic system 1 with a hydraulic medium reservoir 2.
  • the hydraulic medium is, for example, hydraulic oil which is supplied with hydraulic pressure with a hydraulic pressure source 3, which is preferably designed as a hydraulic pump.
  • the hydraulic pump 3 is preferably an electrically driven positive displacement pump.
  • Excess hydraulic medium in particular oil, is used to fill a hydraulic pressure accumulator 5 until a desired pressure level is reached and the hydraulic pump 3 is switched off.
  • a check valve 4 prevents unwanted idling of the hydraulic accumulator 5 via the hydraulic pump 3 in the hydraulic medium reservoir 2.
  • the switching on and off of the hydraulic pump 3 is monitored via a pressure sensor 6 in a system pressure region 7, which is acted upon by a system pressure.
  • a pressure limiting valve 8 prevents an undesirable exceeding of the system pressure.
  • the hydraulic system 1 comprises four gear shifters 11, 12, 3, 14 and two clutches 41, 42.
  • a first gear shifter 11 and a second gear shifter 12 are interconnected to form a first gear selector pair.
  • a third gear 13 and a fourth gear 14 are connected together to form a second gear pair.
  • the actuation of the gear actuators 11 to 14 is controlled by means of a volume flow control valve 2, a pressure regulating valve 22 and a gear selector valve 25.
  • the volume flow control valve 21 and the pressure control valve 22 are designed as continuously variable 3/2-way valves.
  • the valves 21, 22, 25 are each biased by a spring in their illustrated switching positions and are electrically operated.
  • the volume flow control valve 21 and the pressure control valve 22 are designed as proportional valves.
  • the gear selector selector valve 25 is designed as a switching valve.
  • a first connection of the two valves 21, 22 serves to connect the system pressure.
  • a second connection of the two valves 21, 22 is connected to the hydraulic medium reservoir, which is also referred to as a tank.
  • a third connection of the volume flow control valve 21 is connected via a branch 26 to a first connection of the gear selector valve 25 in connection.
  • a third connection of the pressure regulating valve 22 is connected to a second connection of the gear selector valve 25 in connection.
  • a third port of the gear selector valve 25 is connected to a B side of the first gear selector pair 11, 12.
  • An A side of the first gear set pair 11, 12 is connected to the branch 26.
  • the A side of the first gear actuator pair 11, 12 is connected via a connection 28 with an A side of the second gear actuator pair 13, 14.
  • a B side of the second gear stage pair 13, 4 is connected to a fourth port of the gear selector valve 25.
  • the first gear actuator pair 11, 12 is associated with a first locking device 31.
  • the second gear actuator pair 13, 14 is associated with a second locking device 32.
  • the two locking devices 31, 32 are controlled or piloted via a switching valve 35.
  • the switching valve 35 is designed as a 3/2-way valve and biased by a spring in its illustrated switching position.
  • the switching valve 35 is electrically operated. In the illustrated position, the gear shifter 11 and 13 are locked. When the switching valve 35 is changed over, the gear shifters 11 and 13 are released and the gear shifters 12 and 14 are locked.
  • switching valve 35 If the switching valve 35 is de-energized, that is, the switching valve 35 is in a switching position shown, then the following switching movements are possible with de-energized gear selector valve 25: second gear 12 direction A, feed control 22, sequence control 21; second gear actuator 12 direction B, feed control 21, sequence control 22. All switching movements, which are possible with the erfi inventive hydraulic system 1, are shown in the following table:
  • the two clutches 41, 42 are each actuated via a volume flow control valve 43, 44.
  • the two volume flow control valves 43, 44 are, as well as the flow control valve 21 designed as infinitely variable and electrically operated 3/2-way valves.
  • the two volume flow control valves 43, 44 control the two path-controlled clutches 41, 42.
  • a position-controlled and a pressure-controlled clutch or two pressure-controlled clutches could be used. In this case, one or both valves 43, 44 would have to be designed as pressure regulators.
  • the gear actuator 13 comprises a shift cylinder 50, in which a piston with two piston surfaces 51, 52 is movable back and forth.
  • the piston surface 51 is instructed on the side A with pressure.
  • the piston surface 52 is pressurized on the side B with pressure.
  • a shift rail 54 is arranged between the two piston surfaces 51, 52.
  • the gear plate 14 includes a shift rail 55th
  • the locking device 32 comprises a locking piston 60 which is movable in a locking cylinder back and forth.
  • the locking piston 60 is biased by a spring 61 down, so to the shift rail 55 out.
  • the locking piston 60 can be acted upon in a pressure chamber 62 via the switching valve (35 in Figure 1) with the system pressure or with a pilot pressure to move the locking piston 60 upwards, that is to the shift rail 54 back ,
  • two locking members 64, 65 are mounted, which are designed as piston rods and extending in opposite directions.
  • the locking member 65 engages with its free end in a ArretierausEnglishung 67, which is provided on the shift rail 55.
  • a corresponding ArretierausEnglishung 66 is provided, in which the locking member 64 engages with its free end, when the locking device 32 is actuated via the switching valve 35.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Transmission Device (AREA)
  • Gear-Shifting Mechanisms (AREA)

Abstract

L'invention porte sur un système hydraulique pour la commande d'une transmission à double embrayage possédant quatre sélecteurs. L'invention se caractérise par le fait qu'une soupape de commande du débit volumique et une soupape de réglage de la pression sont montées en amont des sélecteurs, et que, lors de l'engagement d'un rapport, les sélecteurs sont manœuvrés avec commande du débit volumique et réglage de la pression en fonction de la position de commutation d'une soupape des sélecteurs.
PCT/DE2011/001901 2010-12-09 2011-10-27 Système hydraulique pour une transmission à double embrayage WO2012075983A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2013542370A JP5901648B2 (ja) 2010-12-09 2011-10-27 デュアルクラッチ伝動装置用の液圧システム
CN201180057325.8A CN103228961B (zh) 2010-12-09 2011-10-27 用于双离合器变速器的液压系统和用于控制双离合器变速器的方法
DE112011104311T DE112011104311A5 (de) 2010-12-09 2011-10-27 Hydrauliksystem für ein Doppelkupplungsgetriebe

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010053936 2010-12-09
DE102010053936.8 2010-12-09

Publications (1)

Publication Number Publication Date
WO2012075983A1 true WO2012075983A1 (fr) 2012-06-14

Family

ID=45406323

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2011/001901 WO2012075983A1 (fr) 2010-12-09 2011-10-27 Système hydraulique pour une transmission à double embrayage

Country Status (4)

Country Link
JP (1) JP5901648B2 (fr)
CN (1) CN103228961B (fr)
DE (2) DE112011104311A5 (fr)
WO (1) WO2012075983A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013008701B3 (de) * 2013-05-22 2014-10-09 Audi Ag Verfahren zum Betreiben einer Getriebeeinrichtung sowie entsprechende Getriebeeinrichtung
JP6384761B2 (ja) * 2014-12-11 2018-09-05 いすゞ自動車株式会社 デュアルクラッチ装置
DE102016118423A1 (de) * 2016-09-07 2018-03-08 Lsp Innovative Automotive Systems Gmbh Elektrohydraulisches System für die Betätigung von Kupplung(en) und Gangsteller(n) von Schaltgetrieben
DE102017220369B4 (de) 2017-11-15 2020-08-20 Getrag Ford Transmissions Gmbh Hydraulische Steuerungsvorrichtung und Verfahren zum Steuern eines Doppelkupplungsgetriebes mit einer Steuerungsvorrichtung

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1400733A2 (fr) * 2002-09-18 2004-03-24 Volkswagen Aktiengesellschaft Dispositif de commande hydraulique d'une boíte de vitesses à double embrayage
WO2004085887A1 (fr) * 2003-03-27 2004-10-07 Ricardo Uk Limited Actionneur de boite de vitesse et procede de commande
DE102007053411A1 (de) * 2006-12-06 2008-06-12 Luk Lamellen Und Kupplungsbau Beteiligungs Kg Vorrichtung zum Betätigen eines Schaltgetriebes mit zwei im Abstand von einer Eingangswelle angeordneten Ausgangswellen
EP2019236A2 (fr) * 2007-07-23 2009-01-28 LuK Lamellen und Kupplungsbau Beteiligungs KG Engrenage à double embrayage doté d'un dispositif de commande d'une multitude de cylindres de commutation hydrauliques

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005022982A1 (de) * 2005-05-19 2006-11-23 Zf Friedrichshafen Ag Verfahren zur Betätigung eines Schaltzylinders einer elektro-pneumatischen Schalteinheit für ein Kraftfahrzeuggetriebe
US8382639B2 (en) * 2009-01-23 2013-02-26 GM Global Technology Operations LLC Control system for a dual clutch transmission

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1400733A2 (fr) * 2002-09-18 2004-03-24 Volkswagen Aktiengesellschaft Dispositif de commande hydraulique d'une boíte de vitesses à double embrayage
WO2004085887A1 (fr) * 2003-03-27 2004-10-07 Ricardo Uk Limited Actionneur de boite de vitesse et procede de commande
DE102007053411A1 (de) * 2006-12-06 2008-06-12 Luk Lamellen Und Kupplungsbau Beteiligungs Kg Vorrichtung zum Betätigen eines Schaltgetriebes mit zwei im Abstand von einer Eingangswelle angeordneten Ausgangswellen
EP2019236A2 (fr) * 2007-07-23 2009-01-28 LuK Lamellen und Kupplungsbau Beteiligungs KG Engrenage à double embrayage doté d'un dispositif de commande d'une multitude de cylindres de commutation hydrauliques
DE102008031483A1 (de) 2007-07-23 2009-01-29 Luk Lamellen Und Kupplungsbau Beteiligungs Kg Doppelkupplungsgetriebe mit einer Vorrichtung zur Ansteuerung einer Mehrzahl hydraulischer Schaltzylinder

Also Published As

Publication number Publication date
JP2014502332A (ja) 2014-01-30
CN103228961B (zh) 2015-07-22
DE112011104311A5 (de) 2013-09-26
CN103228961A (zh) 2013-07-31
DE102011085333A1 (de) 2012-06-14
JP5901648B2 (ja) 2016-04-13

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