WO2018077330A1 - Système hydraulique comprenant un capteur de pression et une soupape - Google Patents

Système hydraulique comprenant un capteur de pression et une soupape Download PDF

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Publication number
WO2018077330A1
WO2018077330A1 PCT/DE2017/100830 DE2017100830W WO2018077330A1 WO 2018077330 A1 WO2018077330 A1 WO 2018077330A1 DE 2017100830 W DE2017100830 W DE 2017100830W WO 2018077330 A1 WO2018077330 A1 WO 2018077330A1
Authority
WO
WIPO (PCT)
Prior art keywords
valve
hydraulic system
pressure sensor
main line
pump
Prior art date
Application number
PCT/DE2017/100830
Other languages
German (de)
English (en)
Inventor
André PALMEN
Roshan Willeke
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
Publication of WO2018077330A1 publication Critical patent/WO2018077330A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
    • F15B11/20—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors controlling several interacting or sequentially-operating members
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K23/00—Arrangement or mounting of control devices for vehicle transmissions, or parts thereof, not otherwise provided for
    • B60K23/02—Arrangement or mounting of control devices for vehicle transmissions, or parts thereof, not otherwise provided for for main transmission clutches
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2400/00—Special features of vehicle units
    • B60Y2400/30—Sensors
    • B60Y2400/306—Pressure sensors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2400/00—Special features of vehicle units
    • B60Y2400/40—Actuators for moving a controlled member
    • B60Y2400/406—Hydraulic actuators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/20507—Type of prime mover
    • F15B2211/20515—Electric motor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/2053—Type of pump
    • F15B2211/20561—Type of pump reversible
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/605—Load sensing circuits
    • F15B2211/6051—Load sensing circuits having valve means between output member and the load sensing circuit
    • F15B2211/6054—Load sensing circuits having valve means between output member and the load sensing circuit using shuttle 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D48/00—External control of clutches
    • F16D48/02—Control by fluid pressure
    • F16D2048/0218—Reservoirs for clutch control systems; Details thereof
    • 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
    • F16D2048/0227—Source of pressure producing the clutch engagement or disengagement action within a circuit; Means for initiating command action in power assisted devices
    • F16D2048/0233—Source of pressure producing the clutch engagement or disengagement action within a circuit; Means for initiating command action in power assisted devices by rotary pump actuation
    • 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
    • F16D2048/0227—Source of pressure producing the clutch engagement or disengagement action within a circuit; Means for initiating command action in power assisted devices
    • F16D2048/0233—Source of pressure producing the clutch engagement or disengagement action within a circuit; Means for initiating command action in power assisted devices by rotary pump actuation
    • F16D2048/0245—Electrically driven rotary pumps
    • F16D2048/0248—Reversible rotary pumps, i.e. pumps that can be rotated in the two directions
    • 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
    • F16D2048/0257—Hydraulic circuit layouts, i.e. details of hydraulic circuit elements or the arrangement thereof
    • F16D2048/0272—Two valves, where one valve is supplying fluid to the cylinder and the other valve is for draining fluid to the sump
    • 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
    • F16D2048/0257—Hydraulic circuit layouts, i.e. details of hydraulic circuit elements or the arrangement thereof
    • F16D2048/0287—Hydraulic circuits combining clutch actuation and other hydraulic systems
    • F16D2048/0293—Hydraulic circuits combining clutch and transmission actuation

Definitions

  • the invention relates to a hydraulic system for a clutch and / or Getriebebetä- tion, with a reversible pump, i. a reversing pump, and two main lines, the pump being connected or connectable at its first pump connection by means of a first main line to a first consumer and at a second pump connection by means of a second main line to a second consumer, and to a pressure sensor, the to determine a working pressure in the respective main line alternately connected to one of the main lines or permanently connected to the two main lines.
  • the hydraulic system can be used, for example, to actuate a clutch or to adjust the gear in a transmission, so that furthermore a coupling and a transmission with this hydraulic system are affected by the invention.
  • DE 1 1 2005 000 814 B4 discloses a hydraulic system for the control of two clutches of a transmission, wherein each of the two clutches has a slave cylinder and the hydraulic fluid from a controllable pump unit from a reservoir via a first pressure line to the first slave cylinder and via a second pressure line the second slave cylinder is provided.
  • a two control terminals and an output exhibiting first valve is provided, which is designed so that the memory with a memory (such as a tank) coupled or coupled output in response to a position of the first valve with one of the control terminals, each connected to one of the main lines is connected.
  • a memory such as a tank
  • the pressure sensor can be used both for measuring the working pressure in the first main line and in the second main line.
  • the structure of the system is thereby significantly simplified.
  • the pressure sensor for alternating hydraulic pressure detection is coupled to the two main lines by means of a second valve
  • the working pressure in one of the main lines can be detected independently of the pressure in the other main line.
  • the second valve is designed as a change-over valve / or valve.
  • the valve is constructed particularly effectively, wherein it ensures the connection of the pressure sensor to the first main line in a first position and the connection of the pressure sensor to the second main line in a second position.
  • the pressure sensor is designed as a differential pressure sensor having two measuring ports, a first measuring port being connected to the first Main line (permanent) and a second measuring connection with the second main line (permanently) connected / connected to this.
  • the shuttle valve can in turn be saved and the structure of the hydraulic system can be further simplified.
  • the first valve is designed as a two-pressure valve, its construction is particularly effective.
  • the pump is driven by a reversible / reversible drive device (preferably designed as an electric motor) in its direction of rotation.
  • a reversible / reversible drive device preferably designed as an electric motor
  • the pump it is expedient with respect to the pump, if it is equipped with a speed and / or direction of rotation detection device. This makes it possible to deduce the speed and the direction of rotation of the pump in a direct way.
  • the invention relates to a clutch and a transmission for a drive train of a motor vehicle, such as a car, truck, bus, other commercial vehicle or motorcycle, with a hydraulic system according to at least one of the previously described embodiments having actuator.
  • a motor vehicle such as a car, truck, bus, other commercial vehicle or motorcycle
  • a hydraulic system with two pressure valves and a pressure sensor such as differential pressure sensor
  • a pressure signal is used to control and regulate a working pressure to return the actual value in the control loop, wherein the pressure is usually detected by a pressure sensor.
  • the hydraulic system according to the invention in this case has a reversing pump and a two-pressure valve (first valve) for controlling at least two consumers, in which pressure signals are detected and processed for the control or regulation of the working pressure.
  • a sensor pressure sensor which is connected via an OR valve to the two connections of the reversing pump.
  • the two connections (pump connections) in combination with the two-pressure valve serve both as pressure-carrying working connections to the consumer.
  • a solution variant is presented, which consists in the use of a differential pressure sensor, wherein the differential pressure sensor is connected to the two terminals of the reversing pump.
  • a working pressure for both consumers is determined by the evaluation of a pressure signal and the speed signal of the pump preferably.
  • FIG. 1 shows a schematic circuit diagram of a hydraulic system according to the invention according to a first exemplary embodiment, wherein two main lines connecting a reversing pump to a load are coupled to a pressure sensor by means of a shuttle valve (first valve), and
  • FIG. 2 is a schematic circuit diagram of a hydraulic system according to the invention according to a second embodiment, wherein a differential pressure sensor is used for the pressure sensor and the shuttle valve.
  • FIG. 1 shows a first embodiment of the hydraulic system 1 according to the invention.
  • the hydraulic system 1 is coupled to two consumers 7 and 8 shown here only schematically.
  • the consumers 7 and 8 are also alternative, according to further embodiments, an integral part of the hydraulic system.
  • Consumers 7 and 8 form here together with hydraulic system 1 an actuating device 20.
  • the consumer 7 and 8 are each designed as an actuator, preferably as a clutch actuator and / or gear actuator.
  • As a clutch actuators serve the consumers 7 and 8 / is the actuator 20 for actuating a clutch, as a transmission actuators for actuating a transmission in a drive train of a motor vehicle.
  • the hydraulic system 1 has a pump 2.
  • the pump 2 is called a reversing pump, i. as a reversible pump 2, executed.
  • the pump 2 is coupled to an electric drive device / an electric motor which is reversible / reversible in its direction of rotation.
  • the pump 2 has two connections, which are identified as pump connections 5 and 6.
  • a first pump connection 5 is coupled to a first main line 3, which in turn is hydraulically connected to the first consumer 7.
  • a second pump connection 6 is in turn hydraulically connected to the second consumer 8 by means of a second main line 4.
  • hydraulic fluid is accordingly pumped from the first main line 3 into the second main line 4 or from the second main line 4 into the first main line 3 in order to move in the main line 3, 4 into which the Hydraulic fluid is pumped to produce a working pressure and the respective consumer 7, 8 supply / actuate.
  • the two main lines 3 and 4 are further connected by a first valve 13 via a secondary line 19 to a memory 14.
  • the first valve 13 is configured as a two-pressure valve, wherein each one control terminal 10 or 1 1 of the first valve 13 with the first main line 3 and the second
  • Main line 4 is coupled.
  • the first control connection 10 is connected to the first main line 3 and the second control connection 1 1 is connected to the second main line 3.
  • device 4 connected.
  • An input / output 12 of the first valve 13 is connected to the secondary line 19 and thereby leads to the memory 14th
  • the first valve 13 is further designed such that the input / output 12 coupled to the memory 14 is connected to one of the control terminals 10, 11 as a function of a position of the first valve 13.
  • the first main line 3 is hydraulically connected to the memory 14 via the first control port 10, at the same time the second main line 4 is separated from the memory 14.
  • the first main line 3 is separated from the memory 14 and the first valve 13 connects the second main line 4 by means of the second control terminal 1 1 with the memory 14th
  • a pressure sensor 9 is coupled by means of a second valve 15.
  • This second valve 15 is designed as a shuttle valve.
  • the second valve 15 is connected in a first position such that the pressure sensor 9 is connected to the first main line 3 and at the same time separated from the second main line 4.
  • the pressure sensor 9 detects a working pressure in the first main line 3 in this first position
  • second position of the second valve 15 is then in turn the first main line 3 separated from the pressure sensor 9 and the pressure sensor 9 to the second main line 9 hydraulically connected to detect a working pressure in the second main line 4.
  • rotational speed and / or rotational direction detecting device which is, for example, a direct component of the pump 2 and detects the rotational speed or direction of rotation of the pump 2.
  • a control unit is present, which is again not shown here for clarity, but also electrically connected to the pressure sensor 9 and the speed and / or direction of rotation detection device.
  • a second preferred embodiment can be seen, which second embodiment is constructed in principle according to the first embodiment and is functioning. For the sake of brevity, therefore, only the differences between the two exemplary embodiments will be discussed.
  • the pressure sensor 9 in the second embodiment for hydraulic pressure detection in the main lines 3, 4 is no longer coupled to the two main lines 3 and 4 by means of a second valve 15, but directly to the two main lines 3 and 4 4 coupled.
  • the pressure sensor 9 is designed as a differential pressure sensor.
  • a first measuring connection 16 of the pressure sensor 9 is connected to the first main line 3, whereas a second measuring connection 17 of the pressure sensor 9 is connected to the second main line 4.
  • the pressure sensor 9 is thus designed for the simultaneous detection of a working pressure in the first main line 3 and a working pressure in the second main line 4, which he forwards metrologically in the form of a differential pressure.
  • the differential pressure detected by the pressure sensor 9 is forwarded to a control unit and compared during operation with a speed or rotation value detected by the speed and / or rotation detection means such that the working pressure in the respective main line 3 and 4 is clearly detected / assigned. Taking into account the speed and / or direction of rotation of the pump 2 is therefore clearly detected, which working pressure in which main line 3, 4 is present.
  • a sensor which is connected via an OR valve (second valve 15 / shuttle valve) to the two ports 5, 6 of the reversing 2, in combination with a two-pressure valve (first valve 13) both can be used as pressure-carrying working connections (main lines 3, 4) to the consumer 7, 8.
  • the detection of a pressure signal as working pressure follows the evaluation of the speed signal with consideration of the sign of the speed and the pressure signal with consideration of the sign of the pressure gradient.
  • the presented detection of the working pressure of two consumers 7, 8 with a single sensor 9 is preferably used in hydraulic systems for clutch and gear actuator actuation.

Abstract

L'invention concerne un système hydraulique (1) pour un actionnement d'embrayage et/ou de boîte de vitesses, comprenant une pompe (2) réversible et deux conduites principales (3, 4), la pompe (2) pouvant être reliée à un premier consommateur (7) au moyen d'une première conduite principale (3) au niveau d'un premier raccord de pompe (5) et à un deuxième consommateur (8) au moyen d'une deuxième conduite principale (4) au niveau d'un deuxième raccord de pompe (6), et un capteur de pression (9) qui, afin de déterminer une pression de travail dans la conduite principale (3, 4) respective, peut être relié alternativement à l'une des conduites principales (3, 4) ou est relié en permanence aux deux conduites principales (3, 4), une première soupape (13) comprenant deux raccords de commande (10, 11) ainsi qu'une sortie (12) étant présente, laquelle est conçue de telle sorte que la sortie (12) accouplée ou pouvant être accouplée à un réservoir (14) est, en fonction d'une position de la première soupape (13), reliée à l'un des raccords de commande (10, 11) qui sont raccordés respectivement à l'une des conduites principales (3, 4). L'invention concerne en outre un embrayage et une boîte de vitesses comprenant un système hydraulique (1).
PCT/DE2017/100830 2016-10-27 2017-09-28 Système hydraulique comprenant un capteur de pression et une soupape WO2018077330A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016221218 2016-10-27
DE102016221218.4 2016-10-27

Publications (1)

Publication Number Publication Date
WO2018077330A1 true WO2018077330A1 (fr) 2018-05-03

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PCT/DE2017/100830 WO2018077330A1 (fr) 2016-10-27 2017-09-28 Système hydraulique comprenant un capteur de pression et une soupape

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0959217A2 (fr) * 1998-05-22 1999-11-24 Hoerbiger Hydraulik GmbH Ensemble pour l'actionnement hydraulique d'un hayon arrière
DE10344648A1 (de) 2002-10-02 2004-04-15 Hoerbiger Hydraulik Gmbh Hydraulische Betätigungsanordnung
DE102006061516A1 (de) 2006-12-18 2008-06-19 Getrag Driveline Systems Gmbh Hydraulikanordnung zur Ansteuerung zweier Aktuatoren
DE102011102277A1 (de) 2011-05-23 2012-11-29 Getrag Getriebe- Und Zahnradfabrik Hermann Hagenmeyer Gmbh & Cie Kg Kupplungsanordnung und Antriebsstrang für ein Kraftfahrzeug
DE112005000814B4 (de) 2004-06-30 2014-11-27 Magna Powertrain Ag & Co. Kg Hydrauliksystem für die Steuerung zweier Kupplungen eines Getriebes
WO2016127994A1 (fr) * 2015-02-12 2016-08-18 Schaeffler Technologies AG & Co. KG Système fluidique

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0959217A2 (fr) * 1998-05-22 1999-11-24 Hoerbiger Hydraulik GmbH Ensemble pour l'actionnement hydraulique d'un hayon arrière
DE10344648A1 (de) 2002-10-02 2004-04-15 Hoerbiger Hydraulik Gmbh Hydraulische Betätigungsanordnung
DE112005000814B4 (de) 2004-06-30 2014-11-27 Magna Powertrain Ag & Co. Kg Hydrauliksystem für die Steuerung zweier Kupplungen eines Getriebes
DE102006061516A1 (de) 2006-12-18 2008-06-19 Getrag Driveline Systems Gmbh Hydraulikanordnung zur Ansteuerung zweier Aktuatoren
DE102011102277A1 (de) 2011-05-23 2012-11-29 Getrag Getriebe- Und Zahnradfabrik Hermann Hagenmeyer Gmbh & Cie Kg Kupplungsanordnung und Antriebsstrang für ein Kraftfahrzeug
WO2016127994A1 (fr) * 2015-02-12 2016-08-18 Schaeffler Technologies AG & Co. KG Système fluidique

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