WO2008071568A1 - Système et procédé de commande d'une boîte de vitesses - Google Patents

Système et procédé de commande d'une boîte de vitesses Download PDF

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Publication number
WO2008071568A1
WO2008071568A1 PCT/EP2007/063115 EP2007063115W WO2008071568A1 WO 2008071568 A1 WO2008071568 A1 WO 2008071568A1 EP 2007063115 W EP2007063115 W EP 2007063115W WO 2008071568 A1 WO2008071568 A1 WO 2008071568A1
Authority
WO
WIPO (PCT)
Prior art keywords
pressure
pressure medium
control device
consumption
controllable valve
Prior art date
Application number
PCT/EP2007/063115
Other languages
German (de)
English (en)
Inventor
Ludger Ronge
Kai Heinrich
Markus Ulbricht
Henrik Schuh
Manfred Vetter
Klaus Wöhr
Gerhard Birkenmaier
Josef Bader
Andreas Graf
Karl-Fritz Heinzelmann
Hubert KÖNIG
Gerhard HÖRING
Kim Führer
Mario Steinborn
Bernhard Walter
Frank Gessler
Original Assignee
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 Zf Friedrichshafen Ag filed Critical Zf Friedrichshafen Ag
Priority to EP07847628A priority Critical patent/EP2122207A1/fr
Publication of WO2008071568A1 publication Critical patent/WO2008071568A1/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
    • F16H61/2807—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 using electric control signals for shift actuators, e.g. electro-hydraulic control 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
    • F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
    • F16H59/68—Inputs being a function of gearing status
    • 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
    • F16H59/68—Inputs being a function of gearing status
    • F16H2059/683—Sensing pressure in control systems or in fluid controlled devices, e.g. by pressure sensors
    • 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

Definitions

  • the present invention relates to a control device for a transmission comprising a pressure medium source, a downstream of the pressure medium source pressure limiting device, a downstream of the pressure limiting arranged first and second controllable valve means, a downstream of the valve means arranged adjusting device for adjusting the transmission and an electrical control device for driving the controllable valve devices ,
  • the present invention further relates to a method for controlling a transmission, in which said valve devices are controlled in dependence on the pressure within the actuating device.
  • the known device comprises a pressure medium source, which is connected via a supply line with a pressure relief valve.
  • the pressure relief valve is followed by two parallel and controllable valve devices.
  • On the two valve devices in turn follows an adjusting device for adjusting the transmission.
  • the known adjusting device has in this case a first pressure medium chamber which can be supplied with pressure medium via the first valve device.
  • the adjusting device has a second pressure medium chamber, which in turn can be supplied with pressure medium via the second valve device.
  • the two pressure medium chambers are separated by a movable piston, on which a piston rod is arranged, which serves as an actuator of the actuating device.
  • the pressure relief valve as well as the two valve devices are controlled as a function of the pressure within the pressure medium chambers.
  • the cited document proposes to arrange a pressure sensor within the pressure medium line extending from the pressure limiting valve to the first and second Valve device extends. The pressure determined by the pressure sensor thus forms the basis for controlling the pressure-limiting valve and the two valve devices.
  • the present invention seeks to provide a particularly simple and cost-effective alternative to the known control device. It is a further object of the present invention to provide a method which is simple and safe to carry out.
  • the control device for a transmission initially has a pressure medium source.
  • a pressure medium source for example, a pump can be understood in combination with a pressure fluid reservoir.
  • a pressure medium for example, air or oil in question, so it may be a pneumatic or hydraulic device.
  • a pressure limiting device Downstream of the pressure medium source, a pressure limiting device is arranged. Downstream here as well as below means that the pressure medium must flow in this direction up to an adjusting device in order to effect an adjustment there.
  • a sensor device for determining the supply pressure upstream of the pressure limiting device is provided. Consequently, the supply pressure between the pressure medium source on the one hand and the pressure limiting device on the other hand can be measured.
  • a first controllable valve device and a second controllable valve device are further arranged.
  • the valve devices may be, for example, solenoid valves.
  • an adjusting device for adjusting the transmission is provided downstream of the valve devices.
  • the adjusting device has a first pressure medium chamber and a second pressure medium chamber, wherein the pressure medium chambers are separated by a movable piston.
  • the movable piston or a piston rod attached thereto can thus act as an actuator for adjusting the transmission.
  • the adjusting device can in this case serve, for example, the choice of the shift gate, the shifting of gear stages or the adjustment of gears in the transmission.
  • the first pressure medium chamber is connected to the first controllable valve device, whereas the second pressure medium chamber is connected to the second controllable valve device.
  • the control device further comprises an electrical control device for controlling the controllable valve devices.
  • a consumption detection device for detecting the pressure medium consumption is also provided.
  • the pressure medium consumption here is not the actual consumption but rather to understand the amount of pressure fluid flowing through, which is required to carry out various switching movements within the transmission.
  • the control device further comprises a calculation device with the aid of which a pressure signal representative of the pressure in the pressure medium chambers can be calculated from the determined supply pressure, the known properties of the pressure limiting device and the detected pressure medium consumption. The control device can then control at least one of the valve devices as a function of the calculated pressure signal.
  • the pressure limiting device is a pressure limiting valve.
  • the pressure limiting device can also be controlled by the control device as a function of the calculated pressure signal.
  • the consumption detection device for detecting the pressure medium consumption on a counter for determining the number of switching operations performed the pressure medium consumption can be determined based on the number of switching operations performed.
  • the pressure medium consumption at individual switching movements is known, so that from this simply the total pressure medium consumption over a certain period can be calculated.
  • the first valve device has a pressure medium input, a pressure medium output connected to the first pressure medium chamber and a pressure medium outlet.
  • the second controllable valve device has a pressure medium input, a pressure medium output connected to the second pressure medium chamber, and a pressure medium outlet.
  • the pressure medium input is connected to the pressure limiting device and / or the pressure fluid outlet is connected to a pressure fluid sink.
  • the first pressure medium chamber with the aid of the first controllable valve means selectively connectable to the pressure medium source or the pressure medium sink, while the second pressure medium chamber can be selectively connected by means of the second controllable valve means with the pressure medium source or the pressure medium sink.
  • the method according to the invention for controlling a transmission comprises the method steps of providing a control device for a transmission with a pressure medium source, one downstream of the pressure medium source arranged pressure limiting device, a downstream of the pressure limiting arranged first and second controllable valve means and a downstream of the valve means arranged adjusting device for adjusting the transmission with a first pressure medium chamber which is connected to the first controllable valve means, and a second pressure medium chamber, which is connected to the second controllable valve means is, wherein the pressure medium chambers are separated by a movable piston, determining the supply pressure before the pressure limiting device, detecting the pressure medium consumption, calculating a representative of the pressure in the pressure fluid chambers pressure signal from the determined supply pressure, the known properties of the pressure limiting device and the detected pressure medium consumption and control at least one of the valve devices and / or the pressure limiting device in dependence on the b calculated pressure signal.
  • the method step of detecting the pressure medium consumption comprises the further method steps determining the number of switching movements performed and determining the pressure medium consumption from the number of switching movements.
  • FIGURE shows a schematic representation of an embodiment of the control device according to the invention.
  • the single FIGURE shows a schematic representation of an embodiment of the control device 1 according to the invention for a transmission.
  • the control device 1 initially has a pressure medium source 2 which comprises both a pressure medium pump 3 and a pressure medium reservoir 4.
  • a pressure medium for example, air or oil come into question.
  • the pressure medium Pump 3 is connected at its suction end with a pressure medium line 5, the end of which projects into a pressure medium sink 6.
  • the supply line 7 connects to where the pressure fluid reservoir 4 is provided.
  • a pressure limiting device 8 Downstream of the pressure medium source 2, a pressure limiting device 8 connects to the supply line 7.
  • the pressure limiting device 8 comprises a pressure limiting valve 9, which is designed as a 2/2-way valve.
  • the pressure relief valve 9 has a pressure medium input 10, which is connected to the supply line 7, and a pressure medium output 1 1.
  • the control of the pressure relief valve 9 takes place in the present embodiment via an electromagnet 12, which via a control line 13 with an electrical control device to be explained later 14 is controllable.
  • a further pressure medium line 15 connects, which splits into two further pressure medium lines 16 and 17. While the one pressure medium line 16 leads to a first controllable valve device 18, the other pressure medium line 17 leads to a structurally identical second controllable valve device 19.
  • the valve devices 18, 19 are each designed as a 3/2-way valve and can be adjusted via an electromagnet 20, 21 , which is connected via a control line 22, 23 with the electrical control device 14.
  • Each of the two valve devices 18, 19 has a pressure medium input 24, 25, which is connected to the pressure medium line 16, 17.
  • each controllable valve device 18, 19 has a pressure medium outlet 26, 27, which is connected via further pressure medium lines 28, 29, 30 with the pressure medium sink 6.
  • the controllable valve devices 18, 19 further have a pressure medium outlet 31, 32, which leads via a further pressure medium line 33, 34 to a downstream adjusting device 35 for adjusting the transmission.
  • the adjusting device 35 comprises a double-acting cylinder 36, in which a movable piston 37 is arranged. On the movable piston 37, a piston rod 38 is arranged, which protrudes from the cylinder 36 and thus is suitable as an actuator for adjusting the transmission.
  • the piston 37 divides the interior space in the cylinder 36 into a first pressure medium chamber 39 and a second pressure medium chamber 40.
  • the first pressure medium chamber 39 is connected via the pressure medium line 33 to the pressure medium outlet 31 of the first valve device 18, while the second pressure medium chamber 40 via the pressure medium line 34 is connected to the pressure medium output 32 of the second valve device 19.
  • the two valve devices 18, 19 and the pressure limiting valve 9 have to be actuated by the electrical control device 14 via the corresponding control lines 13, 22, 23.
  • the control device 1 further has a sensor device 41 for determining the supply pressure upstream of the pressure limiting device 8.
  • the sensor device 41 accordingly determines the supply pressure within the supply line 7 between the pressure medium source 2 on the one hand and the pressure limiting device 8 on the other.
  • the sensor device 41 has a pressure sensor 42, which measures the pressure within the supply line 7 and can transmit a corresponding signal via a measuring line 43 to a calculation device 44.
  • a consumption detection device 45 for detecting the pressure medium consumption is provided.
  • the consumption detection device 45 includes a counter 46, with the aid of which the number of switching movements performed can be determined. This is indicated by the measuring line 47.
  • the consumption detection device 45 can now determine the pressure medium consumption based on the number of switching operations performed and pass on the signal line 48 to the calculation device 44.
  • the calculation device 44 is designed such that this one for the pressure in the pressure medium chambers 39, 40 can calculate representative pressure signal from the ascertaining supply pressure in the supply line, the known properties of the pressure limiting device 8 and the detected pressure medium consumption. A corresponding pressure signal representative of the pressure in the pressure medium chambers 39, 40 can then be passed on to the electrical control device via the signal line 49.
  • a control signal is first sent via the control line 23 to the electromagnet 21 of the valve device 19 so that it establishes a connection between the pressure medium source 2 on the one hand and the second pressure medium chamber 40 on the other hand.
  • the pressure medium can penetrate into the second pressure medium chamber 40 and move the piston 37 to the left, wherein the pressure medium located in the first pressure medium chamber 39 passes through the valve means 18 to the pressure medium sink 6.
  • the control device 14 controls the pressure limiting valve 9 via the control line 13 in a corresponding manner. This takes place as a function of a calculated pressure signal that is representative of the pressure in the pressure medium chambers 39, 40.
  • the method or the device thus uses a calculated pressure signal and not the pressure actually determined within the pressure medium chambers 39, 40. This allows additional pressure sensors, such as a pressure sensor between the pressure grenzungss adopted 8 on the one hand and the controllable valve devices 18, 19 on the other hand, be saved.
  • the calculation of said pressure signal takes place here in the calculation device 44.
  • the basis for the calculation here is the supply pressure in the supply line 7 determined by the sensor device 41 and the pressure medium consumption detected by the consumption detection device 45.
  • the calculation is based on the known properties of the pressure limiting device 8, such as its characteristic curve.
  • a modulated signal to be given to the electromagnet 12 of the pressure relief valve 9 so that the pressure limiting device 8 alternately reaches its closed position and its open position, the duration of the closed position and the duration of the open position of the pressure limiting device 8 according to the signal electrical control device 14 is shorter or longer. In this way, the pressure rise in the second pressure medium chamber 40 and thus the actuating speed of the piston rod 38 can be influenced, this taking place in dependence on the calculated pressure signal.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Control Of Transmission Device (AREA)

Abstract

Système de commande (1) pour une boîte de vitesses, qui comporte une source de fluide sous pression (2), un dispositif de limitation de pression (8) situé en aval de la source de fluide sous pression (2), un dispositif capteur (41) destiné à détecter la pression d'alimentation avant le dispositif de limitation de pression (8), des premier et second dispositifs soupapes (18, 19) pouvant être commandés et situés en aval du dispositif de limitation de pression (8), un dispositif d'ajustement (35) situé en aval des dispositifs soupapes (18, 19) pour l'ajustement de la boîte de vitesses, pourvu d'une première chambre à fluide sous pression (39) raccordée au premier dispositif soupape (18) pouvant être commandé, et d'une seconde chambre à fluide sous pression (40) raccordée au second dispositif soupape (19) pouvant être commandé, les chambres à fluide sous pression (39, 40) étant séparées l'une de l'autre par un piston mobile (37), et un dispositif de commande électrique (14) destiné à la commande des dispositifs soupapes (18, 19) pouvant être commandés. Selon la présente invention, ledit système de commande comporte un dispositif de détection de consommation (45) servant à détecter la consommation de fluide sous pression ainsi qu'un dispositif de calcul (44). Un signal de pression représentatif de la pression régnant dans les chambres à fluide sous pression (39, 40) peut être calculé à l'aide du dispositif de calcul (44) à partir de la pression d'alimentation détectée, des propriétés connues du dispositif de limitation de pression (8) et de la consommation de fluide sous pression détectée, et la commande d'au moins un des dispositifs soupapes (18, 19) peut être opérée par le dispositif de commande (14) en fonction du signal de pression calculé.
PCT/EP2007/063115 2006-12-13 2007-12-03 Système et procédé de commande d'une boîte de vitesses WO2008071568A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP07847628A EP2122207A1 (fr) 2006-12-13 2007-12-03 Système et procédé de commande d'une boîte de vitesses

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200610058912 DE102006058912A1 (de) 2006-12-13 2006-12-13 Vorrichtung und Verfahren zur Steuerung eines Getriebes
DE102006058912.2 2006-12-13

Publications (1)

Publication Number Publication Date
WO2008071568A1 true WO2008071568A1 (fr) 2008-06-19

Family

ID=39135157

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Application Number Title Priority Date Filing Date
PCT/EP2007/063115 WO2008071568A1 (fr) 2006-12-13 2007-12-03 Système et procédé de commande d'une boîte de vitesses

Country Status (4)

Country Link
EP (1) EP2122207A1 (fr)
CN (1) CN101558255A (fr)
DE (1) DE102006058912A1 (fr)
WO (1) WO2008071568A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011005852A1 (de) * 2011-03-21 2012-09-27 Zf Friedrichshafen Ag Verfahren zum Steuern eines automatischen oder automatisierten Schaltsystems
DE102012001100A1 (de) 2012-01-23 2013-07-25 Wabco Gmbh Anordnung zur Ansteuerung eines doppelt wirkenden Schaltzylinders einer Schaltanord-nung eines automatisierten Getriebes eines Kraftfahrzeuges
DE102013016759A1 (de) * 2013-10-10 2015-04-16 Wabco Gmbh Anordnung zur Ansteuerung eines Getriebebremszylinders

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1067319A2 (fr) * 1999-07-09 2001-01-10 WABCO GmbH & CO. OHG Dispositif de commande pour actionneur de transmission
EP1270954A2 (fr) * 2001-06-30 2003-01-02 WABCO GmbH & CO. OHG Procédé pour déterminer la pression d'actionnement d'un vérin de positionnement
WO2003048614A1 (fr) * 2001-12-04 2003-06-12 Zf Friedrichshafen Ag Procede de commande d'un dispositif d'alimentation en pression dans un circuit hydraulique

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD294998A5 (de) * 1990-05-31 1991-10-17 Forsttechnik Waren - Stammbetrieb -,De Schaltungsanordnung zur permanenten ueberwachung von hydraulikoelverlusten in hydraulischen anlagen
DE4244515C2 (de) * 1992-12-30 1995-08-03 Noell Serv & Maschtechn Gmbh Schaltung für intermittierend arbeitende, hydraulisch angetriebene Maschinen, wie Lademaschinen, Senkmaschinen, Bohrwagen oder dergleichen
DE19510206B4 (de) * 1995-03-21 2005-08-18 Zf Friedrichshafen Ag Regeleinrichtung für einen Hydraulikkreis
DE10249341A1 (de) * 2002-10-23 2004-05-06 Zf Friedrichshafen Ag Druckregelungsvorrichtung für ein Betätigungsmittel eines Kraftfahrzeuges

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1067319A2 (fr) * 1999-07-09 2001-01-10 WABCO GmbH & CO. OHG Dispositif de commande pour actionneur de transmission
EP1270954A2 (fr) * 2001-06-30 2003-01-02 WABCO GmbH & CO. OHG Procédé pour déterminer la pression d'actionnement d'un vérin de positionnement
WO2003048614A1 (fr) * 2001-12-04 2003-06-12 Zf Friedrichshafen Ag Procede de commande d'un dispositif d'alimentation en pression dans un circuit hydraulique

Also Published As

Publication number Publication date
EP2122207A1 (fr) 2009-11-25
CN101558255A (zh) 2009-10-14
DE102006058912A1 (de) 2008-06-19

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