WO2022128395A1 - Module de pompe à huile - Google Patents

Module de pompe à huile Download PDF

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Publication number
WO2022128395A1
WO2022128395A1 PCT/EP2021/083060 EP2021083060W WO2022128395A1 WO 2022128395 A1 WO2022128395 A1 WO 2022128395A1 EP 2021083060 W EP2021083060 W EP 2021083060W WO 2022128395 A1 WO2022128395 A1 WO 2022128395A1
Authority
WO
WIPO (PCT)
Prior art keywords
pressure
oil pump
oil
pump
control unit
Prior art date
Application number
PCT/EP2021/083060
Other languages
German (de)
English (en)
Inventor
Mario Alberto CHINCHILLA SABORIO
Alexander SCHALJA
Original Assignee
Vitesco Technologies Germany Gmbh
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 Vitesco Technologies Germany Gmbh filed Critical Vitesco Technologies Germany Gmbh
Publication of WO2022128395A1 publication Critical patent/WO2022128395A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00—Pressure lubrication
    • F01M1/02—Pressure lubrication using lubricating pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00—Pressure lubrication
    • F01M1/16—Controlling lubricant pressure or quantity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00—Pressure lubrication
    • F01M1/02—Pressure lubrication using lubricating pumps
    • F01M2001/0207—Pressure lubrication using lubricating pumps characterised by the type of pump
    • F01M2001/0215—Electrical pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00—Pressure lubrication
    • F01M1/02—Pressure lubrication using lubricating pumps
    • F01M2001/0253—Pressure lubrication using lubricating pumps characterised by the pump driving means

Definitions

  • the invention relates to an arrangement comprising an oil pump according to claim 1 that can be driven at least by means of an electric motor.
  • Conventional oil pumps are driven by a primary drive, for example an internal combustion engine, which means that it is not possible to change the oil pressure on demand. Instead, the oil pressure must be adjusted afterwards using a pressure control valve.
  • Conventional oil pumps entail energy losses because the oil pump delivers more oil than necessary to maintain the oil pressure. This also requires a larger amount of oil in the drive train.
  • DE 10 2017 213 413 A1 discloses an oil pump drive for an oil pump of an automatic transmission of a motor vehicle, which has an internal combustion engine and an electric motor, comprising a planetary gear set arranged coaxially with the oil pump and the electric motor and having a sun gear, a spider and a ring gear, with the The sun gear of the planetary gear set is operatively connected to a rotor of the electric motor via an electric motor shaft, the ring gear of the planetary gear set being non-rotatably connected or operatively connected to a driven gear which meshes with a drive wheel operatively connected to a motor shaft of the internal combustion engine, the carrier of the planetary gear set being connected to a pump input shaft of the oil pump is operatively connected, wherein the output gear is arranged radially viewed above the ring gear and wherein the ring gear and the output gear via a connection element, which is arranged coaxially to the electric motor shaft, by means of a common bearing in a housing se of the electric motor are mounted
  • the invention is based on the object of specifying an improved solution for an oil pump.
  • An arrangement according to the invention comprises an oil pump that can be driven at least by means of an electric motor, a pressure control valve, a pressure sensor for determining an oil pressure in a pressure line of the oil pump, and a pump control unit.
  • the oil pump, the pressure control valve, the pressure sensor and the pump control unit are integrated in an oil pump module, the pump control unit being configured to use the oil pressure determined by the pressure sensor to control and/or regulate the oil pump and the pressure control valve in order to maintain a target pressure value.
  • the oil pump module has an intake line of the oil pump for connection to an oil sump of the drive train, the pressure line, a control interface for specifying the target pressure value and an operating voltage connection as interfaces to a drive train.
  • the oil pump module can only have these interfaces.
  • an external control unit is provided for specifying the target pressure value.
  • the pump control unit is configured to control and/or regulate a torque and/or a speed of the electric motor and a control voltage of the pressure control valve.
  • the pressure control valve is configured to release excess pressure occurring in the pressure line directly to an intake line of the oil pump or to an oil sump.
  • the oil pump is designed as a bivalently drivable oil pump that has a shaft as an additional interface of the oil pump module that can be connected to an external drive.
  • the oil pump module therefore has the intake line of the oil pump for connection to the oil sump of the drive train, the pressure line, the control interface for specifying the target pressure value, the operating voltage connection and the shaft as interfaces to the drive train.
  • the oil pump module can only have these interfaces.
  • the external drive is designed as an internal combustion engine.
  • the oil sump is part of the internal combustion engine.
  • a motor vehicle comprising a drive train and an arrangement as described above.
  • the arrangement described above can be used in a motor vehicle, in a working machine with a hydraulic system, in a cooling system, in a watercraft and/or in a hydraulic system driven by an internal combustion engine.
  • the oil pump module comprises an oil pump for the drive train, which can be driven both mechanically directly, for example by an internal combustion engine, and by an electric drive, for example an electric motor, or an oil pump which can only be driven by an electric drive, for example an electric motor. can be driven, and a pressure sensor which is connected to a pressure line of the oil pump.
  • a pressure control valve on the pressure line and a pump control unit are also integrated in the oil pump module.
  • the pump control unit uses a pressure determined by the pressure sensor both to control the pressure control valve and to adjust the speed and/or the torque of the electric motor in order to adjust the oil supply by the oil pump according to the requirements of a drive train and to obtain a desired oil pressure level.
  • the speed and/or torque of the oil pump and pressure control valve can be continuously monitored and controlled and/or regulated to maintain a constant and stable pressure value, pumping only the required amount of oil to maintain that pressure value, regardless of variations in the Speed of a mechanical direct drive (if equipped) and/or drive train oil consumption variations. It is advantageous to control and/or regulate both components since the dynamic response of the oil pump is much slower than that of the pressure control valve.
  • the proposed solution adjusts the oil flow by controlling and/or regulating the speed and/or the torque of the oil pump, while the pressure control valve ensures the pressure stability.
  • the pressure control valve can vent excess pressure directly into the oil pump suction line.
  • the proposed solution can take over the control and/or regulation of the oil supply.
  • a desired oil pressure only has to be specified by an external control unit, for example a drive control unit.
  • the proposed solution can be used, for example, in a motor vehicle, in a working machine with a hydraulic system, in refrigeration systems, in marine and in hydraulic systems driven by internal combustion engines in general.
  • the solution according to the invention has a high degree of integration since the oil pump, the pressure control valve, the pressure sensor and the pump control unit are integrated in the oil pump module. This also results in a lower space requirement and/or lower weight. By controlling the pump and the pressure control valve by a single pump control unit, the pressure stability is improved.
  • FIG. 1 shows a schematic view of a first embodiment of an oil pump module
  • Figure 2 is a schematic view of a second embodiment of an oil pump module
  • FIG. 3 shows a schematic view of a third embodiment of an oil pump module. Corresponding parts are provided with the same reference symbols in all figures.
  • FIG. 1 is a schematic view of a first embodiment of an oil pump module 1 .
  • the oil pump module 1 includes an oil pump 3 that is electrically driven, for example by means of an electric motor 2.
  • a pressure control valve 4, a pressure sensor 5 and a pump control unit 6 are also provided.
  • the pump control unit 6 uses data from the pressure sensor 5 to control and/or regulate the oil pump 3 and the pressure control valve 4 in order to maintain a target pressure value, which can be specified by a higher-level control unit 7, for example a drive control unit, which is not part of the oil pump module 1 is.
  • pump control unit 6 controls and/or regulates a torque of electric motor 2 and a control voltage of pressure control valve 4.
  • the oil pump 3 is driven electrically and the pressure control valve 4 releases excess pressure occurring in a pressure line 8 at the outlet of the oil pump 3 directly to an intake line 9 of the oil pump 3 .
  • the only interfaces of the oil pump module 1 to a drive train 10 are the intake line 9 for connection to an oil sump 11, the pressure line 8, a control interface for the higher-level control unit 7 for specifying the desired pressure and an operating voltage connection, not shown, for example for applying battery voltage.
  • FIG. 2 is a schematic view of a second embodiment of an oil pump module 1.
  • the second embodiment uses a bivalently drivable oil pump 3, for example as described in DE 10 2017 213 413 A1, US 2018/0371966 A1 and US 2018/0252126 A1, which are hereby described in full Scope incorporated by reference.
  • a bivalent mechanical drive pump offers an additional degree of freedom that can be exploited to better regulate the oil supply while minimizing the size of the electric drive.
  • the oil pump module 1 comprises an oil pump 3 which can be driven electrically, for example by means of an electric motor 2 also has a shaft 12 which can be driven, for example, by an internal combustion engine 13 which can be part of a drive train 10 . Furthermore, a pressure control valve 4, a pressure sensor 5 and a pump control unit 6 are provided. The pump control unit 6 uses data from the pressure sensor 5 to control and/or regulate the oil pump 3 and the pressure control valve 4 in order to maintain a target pressure value, which can be specified by a higher-level control unit 7, for example a drive control unit, which is not part of the oil pump module 1 is. For example, pump control unit 6 controls and/or regulates a torque of electric motor 2 and a control voltage of pressure control valve 4.
  • the pressure control valve 4 drains excess pressure occurring in a pressure line 8 at the outlet of the oil pump 3 directly to an intake line 9 of the oil pump 3 .
  • the only interfaces of the oil pump module 1 to a drive train 10 are the intake line 9 for connection to an oil sump 11, the pressure line 8, a control interface for the higher-level control unit 7 for specifying the desired pressure, the shaft 12 and an operating voltage connection, not shown, for example for applying a battery voltage.
  • FIG. 3 is a schematic view of a third embodiment of an oil pump module 1 .
  • the third embodiment largely corresponds to the second embodiment, but differs in that the pressure control valve 4 drains excess pressure occurring in the pressure line 8 at the outlet of the oil pump 3 directly to the oil sump 11 .
  • the first embodiment according to FIG. 1 can be modified in the same way. This modification does not affect the general function of the proposed oil pump module 1 and can be better suited in individual cases according to the respective requirements of the drive train 10 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
  • Control Of Positive-Displacement Pumps (AREA)

Abstract

L'invention concerne un agencement comprenant : une pompe à huile (3) qui peut être entraînée au moins au moyen d'un moteur électrique (2) ; une soupape de régulation de pression (4) ; un capteur de pression (5) pour déterminer une pression d'huile dans une conduite de pression (8) de la pompe à huile (3) ; et une unité de commande de pompe (6). La pompe à huile (3), la soupape de régulation de pression (4), le capteur de pression (5) et l'unité de commande de pompe (6) sont intégrés dans un module de pompe à huile (1), et l'unité de commande de pompe (6) est configurée pour commander la pompe à huile (3) et la soupape de régulation de pression (4) en boucle ouverte et/ou en boucle fermée sur la base de la pression d'huile déterminée par le capteur de pression (5) afin de maintenir une valeur de pression cible.
PCT/EP2021/083060 2020-12-18 2021-11-25 Module de pompe à huile WO2022128395A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102020216282.4 2020-12-18
DE102020216282.4A DE102020216282A1 (de) 2020-12-18 2020-12-18 Ölpumpenmodul

Publications (1)

Publication Number Publication Date
WO2022128395A1 true WO2022128395A1 (fr) 2022-06-23

Family

ID=78825004

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2021/083060 WO2022128395A1 (fr) 2020-12-18 2021-11-25 Module de pompe à huile

Country Status (2)

Country Link
DE (1) DE102020216282A1 (fr)
WO (1) WO2022128395A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10128856A1 (de) * 2000-11-17 2002-05-23 Zf Sachs Ag Kupplungssystem mit wenigstens einer Lamellen-Kupplungsanordnung, Antriebsstrang mit dem Kupplungssystem und Warmlaufverfahren hierfür
DE10213598A1 (de) * 2001-03-27 2002-10-10 Toyoda Boshoku Kk Ölpumpe für eine Brennkraftmaschine und Verfahren zum Betrieb derselben
DE102008040665A1 (de) * 2008-07-24 2010-06-17 Zf Friedrichshafen Ag Verfahren zur Steuerung der Ölversorgungseinrichtung eines Planeten-Automatgetriebes
US20180252126A1 (en) 2015-11-06 2018-09-06 Continental Automotive Gmbh Conveying device for conveying oil
US20180371966A1 (en) 2015-10-13 2018-12-27 Continental Automotive Gmbh Delivery device for a motor vehicle
DE102017213413A1 (de) 2017-08-02 2019-02-07 Zf Friedrichshafen Ag Ölpumpenantrieb

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE112016004740B4 (de) 2015-10-15 2022-06-09 Nidec Tosok Corporation Kupplungssteuereinrichtung
DE102017122115A1 (de) 2017-09-25 2019-03-28 Man Diesel & Turbo Se Schmierölsystem einer Schiffsdieselbrennkraftmaschine und Verfahren zum Betreiben desselben

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10128856A1 (de) * 2000-11-17 2002-05-23 Zf Sachs Ag Kupplungssystem mit wenigstens einer Lamellen-Kupplungsanordnung, Antriebsstrang mit dem Kupplungssystem und Warmlaufverfahren hierfür
DE10213598A1 (de) * 2001-03-27 2002-10-10 Toyoda Boshoku Kk Ölpumpe für eine Brennkraftmaschine und Verfahren zum Betrieb derselben
DE102008040665A1 (de) * 2008-07-24 2010-06-17 Zf Friedrichshafen Ag Verfahren zur Steuerung der Ölversorgungseinrichtung eines Planeten-Automatgetriebes
US20180371966A1 (en) 2015-10-13 2018-12-27 Continental Automotive Gmbh Delivery device for a motor vehicle
US20180252126A1 (en) 2015-11-06 2018-09-06 Continental Automotive Gmbh Conveying device for conveying oil
DE102017213413A1 (de) 2017-08-02 2019-02-07 Zf Friedrichshafen Ag Ölpumpenantrieb

Also Published As

Publication number Publication date
DE102020216282A1 (de) 2022-06-23

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