WO2023151758A1 - Procédé de pré-remplissage d'un système hydraulique d'un actionneur hydraulique d'un véhicule automobile - Google Patents

Procédé de pré-remplissage d'un système hydraulique d'un actionneur hydraulique d'un véhicule automobile Download PDF

Info

Publication number
WO2023151758A1
WO2023151758A1 PCT/DE2023/100112 DE2023100112W WO2023151758A1 WO 2023151758 A1 WO2023151758 A1 WO 2023151758A1 DE 2023100112 W DE2023100112 W DE 2023100112W WO 2023151758 A1 WO2023151758 A1 WO 2023151758A1
Authority
WO
WIPO (PCT)
Prior art keywords
pump
line
motor vehicle
pressure
consumer
Prior art date
Application number
PCT/DE2023/100112
Other languages
German (de)
English (en)
Inventor
Alexander Dreher
Dominik LAUER
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 WO2023151758A1 publication Critical patent/WO2023151758A1/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
    • F16H61/0021—Generation or control of line pressure
    • F16H61/0025—Supply of control fluid; Pumps therefore
    • 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
    • F16H61/04—Smoothing ratio shift
    • F16H61/06—Smoothing ratio shift by controlling rate of change of fluid pressure
    • F16H61/061—Smoothing ratio shift by controlling rate of change of fluid pressure using electric control means
    • F16H2061/062—Smoothing ratio shift by controlling rate of change of fluid pressure using electric control means for controlling filling of clutches or brake servos, e.g. fill time, fill level or pressure during filling
    • 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
    • F16H59/74—Inputs being a function of engine parameters
    • F16H59/78—Temperature

Definitions

  • the invention relates to a method for pre-filling a hydraulic system of an actuator of a motor vehicle with a pump that delivers fluid to a first consumer in a first direction of rotation and delivers fluid to at least one second consumer in a second direction of rotation, and with a line system through which the pump the second consumer and with the interposition of a switchable valve can be connected to a reservoir.
  • Such hydraulic systems are provided in a drive train, in particular in a hybrid drive train of a motor vehicle.
  • an internal combustion engine and an electric machine can be connected in a hybrid drive train, with the internal combustion engine and electric machine being directly connected by means of a separating clutch, such as a friction clutch, or being operable independently of one another.
  • the electric machine is, for example, connected downstream of a transmission which is operatively arranged between its rotor and a differential with the drive wheels, for example with a single gear stage, in which a second electric machine can be arranged.
  • the motor vehicle contains, for example, a parking brake to form a parking brake, which is actuated by means of a parking claw engaging in a form-fitting manner in a transmission profile.
  • the hydraulic system serves to cool the separating clutch and, if necessary, other transmission components and to actuate the separating clutch and the parking lock.
  • one is used for sucking in and distributing fluid pump operated electrically by an electric motor, for example a reversible pump.
  • the fluid is pumped through one cooling circuit in one direction of rotation of the pump, while the pressure required to actuate the separating clutch or parking lock is generated in the other direction of rotation.
  • the fluid circuit is controlled by means of switchable valves such as 2-way valves and check valves.
  • the separating clutch is fully closed in order to transfer the torque of the internal combustion engine to the drive wheels.
  • the working pressure for actuating a slave cylinder to close the separating clutch can be maintained by means of a switchable check valve and/or a check valve.
  • Hydraulic systems with an electrically driven so-called reversible pump are known from the prior art. In this case, one direction of rotation of the reversible pump can be assigned a volumetric flow function, such as a cooling function, and the other direction of rotation of the reversible pump can be assigned an actuating function.
  • Such hydraulic systems and methods for their operation are known, for example, from the documents DE 10 2018 112 663 A1, DE 10 2018 112 665 A1, DE 10 2018 113 316 A1 and DE 10 2018 114 789 A1.
  • Other hydraulic systems are known, inter alia, from the publications DE 10 2016 213 318 A1 and WO 2012/113368 A1.
  • the object of the invention is the development of a method for pre-filling a hydraulic system.
  • the object of the invention is to propose a method in which a consumer is prepared for actuation before he requests it, so that it can be put into operation quickly and conveniently after the motor vehicle has been shut down.
  • the object is solved by the subject matter of claim 1.
  • the claims dependent on claim 1 present advantageous embodiments of the subject-matter of claim 1.
  • the proposed method is used for pre-filling a hydraulic system of a motor vehicle.
  • the hydraulic system serves as a smart actuator for cooling and actuating components of the hybrid drive train.
  • the hydraulic system contains a pump that is driven, for example, by means of an electric motor, can be controlled in both directions of rotation and delivers fluid, which in a first direction of rotation delivers fluid to a first consumer, for example to a separating clutch for cooling, and in a second direction of rotation, fluid to at least one second consumer, for example a parking lock activated by means of a slave cylinder and/or to a separating clutch actuated by means of a second slave cylinder.
  • the at least one second consumer for example the two slave cylinders, are connected to the pump with a line system, for example consisting of a hydraulic line connected to the pump and two alternately connectable pressure line branches supplying two second consumers, through which the pump is connected to the second consumer and is connected to a reservoir with the interposition of a switchable valve.
  • a line system for example consisting of a hydraulic line connected to the pump and two alternately connectable pressure line branches supplying two second consumers, through which the pump is connected to the second consumer and is connected to a reservoir with the interposition of a switchable valve.
  • the pump pumps fluid from the reservoir via the line system with the line system connected to the reservoir up to a predetermined termination criterion prior to a request from the at least one second consumer.
  • the line system between the second consumer and the pump of the hydraulic system which may have been at least partially empty in the event of a longer standstill and/or higher ambient temperature, is pre-filled by operating the pump before, for example, a request comes from the driver of the motor vehicle, the at least one second consumer, for example to put a parking lock into operation.
  • the pump sucks fluid from the reservoir, for example a pressureless sump, and any air present in the line system is discharged to the outside via the open valve, i.e. into the reservoir, until it is recognized on the basis of a termination criterion that the line system is complete or at least for the quick and comfortable actuation of the at least one second consumer is sufficiently filled with fluid.
  • the line system has a first pressure line branch that actuates a parking lock and a second pressure line branch that actuates a friction clutch, e.g can be connected to the hydraulic line connected to the pump.
  • the second valve can be followed by the first valve, for example designed as a 2/2 valve, which connects the pressure line branch and thus the hydraulic line to the reservoir.
  • the second valve is switched open in the direction of the pressure line branch for the separating clutch and the first valve in relation to the reservoir. In this way, during the pre-filling, fluid can be pumped from the reservoir via the hydraulic line and the pressure line branch to the reservoir.
  • the hydraulic system can be constructed in such a way that the pump is provided at each of the two pump inlets with an intake branch that is protected against backflow by means of a non-return valve in relation to the reservoir.
  • the pump inlet changes depending on the direction of rotation, so that the suction branches also change depending on the direction of rotation, whereby the fluid is sucked in through one of the two suction branches by adjusting the direction of rotation of the pump and fed into the hydraulic line, i.e. via which is fed to the respective pressure line branch to the first or second consumer.
  • the pre-filling can take place in two variants. In a first variant, fluid is sucked in via the second suction branch and pumped directly via the second valve and the valve that is open to the reservoir.
  • the pump is operated in the opposite direction.
  • fluid is sucked in via the first intake branch and from there it enters the line system.
  • the portion that is irrelevant for the pre-filling is fed to the cooling of the first consumer.
  • the part that is decisive for the pre-filling of the line system is discharged via the valve that is open to the reservoir.
  • a criterion for stopping the pre-filling is to record the pressure in the line system over the filling time, ie the activity of the pump during the pre-filling. If the pressure increases in a characteristic way, it can be assumed that the pipe system is filled.
  • a predetermined pressure threshold, a pressure value, pressure range or pressure point can be specified as a termination criterion.
  • the termination criterion can be monitored, for example, by means of a pressure sensor provided and arranged in the pressure line.
  • a current/voltage behavior of an electric motor driving the pump can be evaluated to determine the termination criterion. For example, a current flowing in the electric motor during the pre-filling can be evaluated, with the termination criterion being set to a current value at which the line system is pre-filled.
  • the termination criterion can be stored and retrieved as a fixed variable or variable that can be adapted to the running line of the hydraulic system as a function of temperature and/or the like, for example in a control unit of the hydraulic system or in a higher-level control unit.
  • the initial termination criterion can be learned, for example, during the initialization at the end of the line, or it can be specified empirically.
  • the idle time of the motor vehicle that has been shut down is recorded, for example, between being shut down, for example by switching off the internal combustion engine, switching off the ignition, removing an operating key, locking the motor vehicle and/or the like, and starting the motor vehicle again, for example by opening the motor vehicle, inserting an operating key, switching on the Ignition and / or the like determined.
  • the routine for pre-filling the hydraulic system is advantageously started before the motor vehicle is started up, so that the pre-filling is already completed when the vehicle is started up.
  • the routine can be initiated when the motor vehicle is unlocked using a key or without contact.
  • the ambient temperature can be determined, for example, as the internal temperature in the engine compartment of the motor vehicle using a temperature sensor that may be present in a drive train component, control unit or the like, or as a temperature model.
  • the ambient temperature as Outside temperature outside the motor vehicle for example by means of an outside temperature sensor of the motor vehicle or using a wireless, for example, from an Internet connection of the motor vehicle or a media device connected to it such as a smartphone outside temperature are recorded and evaluated.
  • FIGS. show:
  • Figure 1 is a hydraulic diagram of a hydraulic system
  • FIG. 2 shows a diagram with sequences for pre-filling the hydraulic system of FIG.
  • FIG. 1 shows a schematic representation of the hydraulic system 1 .
  • the hydraulic system 1 has the pump 2 designed as a reversible pump.
  • the pump 2 can be driven in a first direction of rotation 3 .
  • the pump 2 delivers fluid to the first consumer 4, such as a cooling device, and provides a volume flow function.
  • the pump 2 can be driven in a second direction of rotation 5 opposite to the first direction of rotation 3 .
  • the pump 2 delivers the fluid to the two consumers 6.
  • an operating pressure is built up to actuate them.
  • the pump 2 delivers the fluid to two second consumers 6, here to a slave cylinder of the parking lock 7 and to a slave cylinder of the friction clutch 8.
  • the pump 2 is driven by the electric motor 9 .
  • the electric motor 9 is controlled by the control unit 10 .
  • the first pump inlet 11 of the pump 2 is by means of the cooling line 12 with the interposition of the check valve 13 with the connected to the first consumer 4 and by means of the check valve 14 to the first suction branch 16 sucking in from the reservoir 15 .
  • the check valve 13 prevents the fluid from being pumped back into the reservoir 15.
  • the opposite pump inlet 17 of the pump 2 is connected to the intake branch 20 with the check valve 19 being interposed.
  • the pump inlet 17 is also connected to the line system 30, which contains the hydraulic line 18, the pressure line branches 22, 23, the valves 21, 24, the check valve 25 and the discharge lines 27, 28.
  • the consumers 6 connect to the pressure line branches 22, 23 and are actuated, for example, by means of a slave cylinder (not shown) connected to one of the pressure line branches 22, 23.
  • a slave cylinder not shown
  • the pump 2 sucks in fluid from the reservoir 15 from one of the suction branches 16, 20 in each case.
  • the hydraulic line 18 can be connected alternately to the pressure line branch 22 supplying the slave cylinder of the parking lock 7 or to the pressure line branch 23 supplying the slave cylinder of the friction clutch 8 by means of the switchable valve 21 , here a 4/2 valve.
  • the switchable valve 24 here a 2/2 valve, is introduced into the pressure line branch 23 and connects it to the reservoir 15 via the discharge line 27 .
  • the valve 21 is switched between the hydraulic line 18 and the pressure line branch 23
  • the pressure line branch 22 is connected to the reservoir 15 by means of the discharge line 28, so that the parking lock 7 is opened.
  • the pressure line branch 23 is uncoupled.
  • a pressure built up on the slave cylinder of the friction clutch to actuate the friction clutch 8 is maintained by means of the check valve 25, so that the friction clutch 8 remains closed, for example, independently of the wiring of the valve 21 or the operation of the pump 2 and only the pressure loss caused by the leakage pleasure must be tracked.
  • the friction clutch 8 is opened by the valve 24 being opened.
  • the pressure sensor 26 connected to the control unit 10 is connected to the pressure line branch 23 .
  • Two variants of the pre-filling of the line system 30 can be set.
  • the pump 2 is driven in the direction of rotation 5 and sucks in fluid via the suction branch 16 and pumps it into the hydraulic line 18 and from there into the pressure line branch 23 and the discharge line 27 into the reservoir 15 until a termination criterion is assumed, assuming complete or sufficient filling of the hydraulic line 18 and the pressure line branch 23, the pump 2 stops.
  • the termination criterion can be determined from the sensor data of the pressure sensor 26 recorded over the filling time and/or from the variable derived from the current of the electric motor 9 recorded over the operating time.
  • the valve 21 between the hydraulic line 18 and the pressure line branch 23 and the valve 24 between the pressure line branch 23 and the discharge line 27 are continuously switched.
  • the pump 2 is operated in the direction of rotation 3 .
  • fluid is sucked in via the second suction branch 20 and divided into the cooling line 12 and the hydraulic line 18 at the connection node 29 .
  • the cooling line 12 can also wet the components to be cooled, such as the friction clutch 8 , for example when the motor vehicle is parked for a long time, thereby enabling a more comfortable start.
  • the start of the two variants depends on the service life and/or the ambient temperature. For example, pre-filling can be suspended in the case of short downtimes. Furthermore, depending on the service life and/or the ambient temperature, a distinction can be made between the two variants.
  • FIG. 2 shows the diagram 100 of a pre-filling process of the hydraulic system 1 of FIG. 1 over the filling time t.
  • Partial diagram I shows the speed n of the pump 2, which is controlled to a constantly controlled speed n(B) up to the termination criterion AK.
  • Partial diagram II shows the pressure p of the pressure sensor 26 and partial diagram III shows the current i flowing via the electric motor 9 over the filling time t.
  • the pressure point p(B) and/or the current value i(B) serve as termination criteria AK, evaluated together or individually.
  • the pressure p detected by the pressure sensor 26 remains low until the time t1 due to the lack of fluid in the line system 30.
  • the line system 30 begins to fill and the flow resistance applied to the valve 24 increases the pressure p in the line system 30. If the pressure p reaches the pressure point p(B), it is assumed that the line system 30 is sufficiently filled and the Pump 2 is shut down. The valve 24 is then closed, for example, and the valve 21 is switched through between the hydraulic line 18 and the pressure line branch 22 .
  • Partial diagram III shows the current i of the electric motor 9 over the filling time t. Due to the regulation of the constant speed n of the pump 2, a current peak i(max) occurs at the beginning of the filling time t, which is faded out due to the short filling time t. This is followed by a small flow resulting from the transport of fluid. At time t2, the current i increases due to the flow resistance at the valve 24 and the build-up of pressure in the line system 30. At the current value i(B), it is assumed that the line system 30 is sufficiently filled and the pump 2 is switched off at the termination criterion AK defined by this current value i(B).
  • Connection node piping system diagram AK termination criterion i current i(B) current value i(max) current peak n speed n(B) speed p pressure p(B) pressure point t filling time t1 time t2 time

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Transmission Device (AREA)

Abstract

L'invention concerne un procédé de pré-remplissage d'un système hydraulique (1) d'un véhicule à moteur avec une pompe (2), qui délivre un fluide à un premier consommateur (4) dans une première direction de rotation (3) et délivre un fluide à au moins un second consommateur (6) dans une seconde direction de rotation (5) et avec un système de conduite (30) à travers lequel la pompe (2) peut être reliée audit au moins un second consommateur (6) et, avec l'interposition d'une soupape commutable (24), à un réservoir (15). Afin d'obtenir un actionnement rapide et pratique dudit au moins un second consommateur (6) lorsque le véhicule à moteur est redémarré après un arrêt, la pompe (2) délivre un fluide à partir du réservoir (15) par l'intermédiaire du système de conduite (30) lorsque le système de conduite (30) est relié au réservoir (15), en fonction d'un temps d'attente du véhicule à moteur et/ou d'une température ambiante, jusqu'à un critère de terminaison prédéfini avant une demande provenant dudit au moins un second consommateur (6).
PCT/DE2023/100112 2022-02-14 2023-02-13 Procédé de pré-remplissage d'un système hydraulique d'un actionneur hydraulique d'un véhicule automobile WO2023151758A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102022103384.8A DE102022103384A1 (de) 2022-02-14 2022-02-14 Verfahren zur Vorbefüllung eines Hydrauliksystems eines hydraulischen Aktors eines Kraftfahrzeugs
DE102022103384.8 2022-02-14

Publications (1)

Publication Number Publication Date
WO2023151758A1 true WO2023151758A1 (fr) 2023-08-17

Family

ID=85570264

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2023/100112 WO2023151758A1 (fr) 2022-02-14 2023-02-13 Procédé de pré-remplissage d'un système hydraulique d'un actionneur hydraulique d'un véhicule automobile

Country Status (2)

Country Link
DE (1) DE102022103384A1 (fr)
WO (1) WO2023151758A1 (fr)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012113368A2 (fr) 2011-02-23 2012-08-30 Schaeffler Technologies AG & Co. KG Dispositif hydraulique pour actionner un embrayage
DE102016213318A1 (de) 2016-07-21 2018-01-25 Schaeffler Technologies AG & Co. KG Verfahren zur Aufrechterhaltung eines Druckniveaus einer Hydraulikflüssigkeit in einer hydraulischen Aktoranordnung
DE102018112663A1 (de) 2018-05-28 2019-11-28 Schaeffler Technologies AG & Co. KG Hydraulikeinrichtung mit zwei unterschiedlichen Fluidquellen zur Versorgung entweder eines ersten Verbrauchers oder eines zweiten Verbrauchers
DE102018112665A1 (de) 2018-05-28 2019-11-28 Schaeffler Technologies AG & Co. KG Hydraulikeinrichtung mit über ein Schaltventil gezielt verbindbarem hydraulischen Parksperrenbetätiger und Cut-off-Ventil
DE102018114789A1 (de) 2018-06-20 2019-12-24 Schaeffler Technologies AG & Co. KG Antriebseinheit für einen Antriebsstrang eines elektrisch antreibbaren Kraftfahrzeugs sowie damit ausgestattete Antriebsanordnung
DE102018131117A1 (de) 2018-12-06 2020-06-10 Schaeffler Technologies AG & Co. KG Verfahren zum Entfernen von Luft aus einem Hydrauliksystem sowie Hydrauliksystem
DE102018131108A1 (de) * 2018-12-06 2020-06-10 Schaeffler Technologies AG & Co. KG Verfahren zur Aufrechterhaltung eines Druckniveaus einer Hydraulikflüssigkeit in einer Hydraulikeinrichtung
DE102019100617A1 (de) * 2019-01-11 2020-07-16 Schaeffler Technologies AG & Co. KG Hydrauliksystem mit zwei mechanisch angetriebenen Pumpen sowie Hybridmodul mit Hydrauliksystem
DE102020119189A1 (de) * 2020-07-21 2022-01-27 Schaeffler Technologies AG & Co. KG Verfahren zur Steuerung einer Reibungskupplung in einem hybridischen Antriebsstrang

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5306974B2 (ja) 2009-12-02 2013-10-02 日立オートモティブシステムズ株式会社 電動オイルポンプ
DE102018130700B4 (de) 2018-12-03 2020-07-02 Schaeffler Technologies AG & Co. KG Verfahren zum Herstellen einer hydraulischen Bereitschaft eines Hydrauliksystems sowie Hydrauliksystem

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012113368A2 (fr) 2011-02-23 2012-08-30 Schaeffler Technologies AG & Co. KG Dispositif hydraulique pour actionner un embrayage
DE102016213318A1 (de) 2016-07-21 2018-01-25 Schaeffler Technologies AG & Co. KG Verfahren zur Aufrechterhaltung eines Druckniveaus einer Hydraulikflüssigkeit in einer hydraulischen Aktoranordnung
DE102018112663A1 (de) 2018-05-28 2019-11-28 Schaeffler Technologies AG & Co. KG Hydraulikeinrichtung mit zwei unterschiedlichen Fluidquellen zur Versorgung entweder eines ersten Verbrauchers oder eines zweiten Verbrauchers
DE102018112665A1 (de) 2018-05-28 2019-11-28 Schaeffler Technologies AG & Co. KG Hydraulikeinrichtung mit über ein Schaltventil gezielt verbindbarem hydraulischen Parksperrenbetätiger und Cut-off-Ventil
DE102018114789A1 (de) 2018-06-20 2019-12-24 Schaeffler Technologies AG & Co. KG Antriebseinheit für einen Antriebsstrang eines elektrisch antreibbaren Kraftfahrzeugs sowie damit ausgestattete Antriebsanordnung
DE102018131117A1 (de) 2018-12-06 2020-06-10 Schaeffler Technologies AG & Co. KG Verfahren zum Entfernen von Luft aus einem Hydrauliksystem sowie Hydrauliksystem
DE102018131108A1 (de) * 2018-12-06 2020-06-10 Schaeffler Technologies AG & Co. KG Verfahren zur Aufrechterhaltung eines Druckniveaus einer Hydraulikflüssigkeit in einer Hydraulikeinrichtung
DE102019100617A1 (de) * 2019-01-11 2020-07-16 Schaeffler Technologies AG & Co. KG Hydrauliksystem mit zwei mechanisch angetriebenen Pumpen sowie Hybridmodul mit Hydrauliksystem
DE102020119189A1 (de) * 2020-07-21 2022-01-27 Schaeffler Technologies AG & Co. KG Verfahren zur Steuerung einer Reibungskupplung in einem hybridischen Antriebsstrang

Also Published As

Publication number Publication date
DE102022103384A1 (de) 2023-08-17

Similar Documents

Publication Publication Date Title
EP1963687B1 (fr) Procede de commande d'un mecanisme d'entrainement hydrostatique
DE112009001198B4 (de) Kraftübertragungsvorrichtung
DE112010002752B4 (de) Hydrauliksteuerungsvorrichtung für Automatikgetriebe
DE19649703B4 (de) Öldruckkreis für Kupplung
WO2008106920A1 (fr) Système hydraulique conçu pour commander une boîte de vitesses à double embrayage fonctionnant avec des embrayages humides
DE102016116942B4 (de) Hydraulikdruck-Zuführ-System für ein automatisches Getriebe
DE102006050873A1 (de) Hydrostatischer Antrieb mit Bremsenergierückgewinnung
DE102013222984A1 (de) Getriebevorrichtung mit einem eine Pumpeneinrichtung umfassenden Hydrauliksystem
DE102016118686A1 (de) Hydraulische-steuerungsvorrichtung für einen hydraulischen drehmomentwandler
DE102006058357A1 (de) Vorrichtung zur Energierückgewinnung
DE102020004981B3 (de) Automatikgetriebe für ein Kraftfahrzeug, Verfahren zum Betreiben eines solchen Automatikgetriebes sowie Kraftfahrzeug mit einem solchen Automatikgetriebe
DE102012010536A1 (de) Hydraulisches System zurBremsenergierückgewinnung
EP3114371B1 (fr) Procédé de commande d'un système d'alimentation en fluide hydraulique d'une transmission automatique
DE102020204675B4 (de) Pumpen-System mit Kupplungen
DE102015222503A1 (de) Hydrauliksystem für einen Fahrzeug-Leistungs-/Antriebsstrang
WO2021058060A1 (fr) Procédé de vérification d'une position de soupape d'une chaîne cinématique hybride incluant un verrou de stationnement et un ou plusieurs moteurs électriques
DE102018002043A1 (de) Diagnoseverfahren für ein Getriebeschmierungsventil eines Hydrauliksystems für ein Kraftfahrzeuggetriebe
WO2023151758A1 (fr) Procédé de pré-remplissage d'un système hydraulique d'un actionneur hydraulique d'un véhicule automobile
DE102022113487A1 (de) Verfahren zur Erkennung eines sicheren Zustands eines Ventils eines Hydrauliksystems
DE102009036864A1 (de) Antriebsstrang mit motorölgespeistem Drehmomentwandler
WO2021223799A1 (fr) Procédé d'amélioration de l'étanchéité d'une soupape dans un circuit hydraulique d'un système d'actionnement d'embrayage
WO2017050682A1 (fr) Alimentation en huile d'une transmission automatique ou d'une boîte de vitesses automatisée et procédé d'alimentation de ladite transmission
WO2020177803A1 (fr) Procédé de modification active de coefficient de friction d'un embrayage de séparation hybride monté dans une chaîne cinématique d'un véhicule
DE102020211041A1 (de) Bremsvorrichtung für ein Fahrzeug mit einem hydrodynamischen Retarder und mit einer Trennkupplung
DE102006018434A1 (de) Antrieb für ein Mobilfahrzeug

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 23710203

Country of ref document: EP

Kind code of ref document: A1