EP1561051A1 - Dispositif d'entrainement de vehicule - Google Patents

Dispositif d'entrainement de vehicule

Info

Publication number
EP1561051A1
EP1561051A1 EP03788967A EP03788967A EP1561051A1 EP 1561051 A1 EP1561051 A1 EP 1561051A1 EP 03788967 A EP03788967 A EP 03788967A EP 03788967 A EP03788967 A EP 03788967A EP 1561051 A1 EP1561051 A1 EP 1561051A1
Authority
EP
European Patent Office
Prior art keywords
rotor
oil pump
motor vehicle
electric motor
pump
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP03788967A
Other languages
German (de)
English (en)
Inventor
Andreas Klaus
Tobias Ostertag
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mercedes Benz Group AG
Original Assignee
DaimlerChrysler 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 DaimlerChrysler AG filed Critical DaimlerChrysler AG
Publication of EP1561051A1 publication Critical patent/EP1561051A1/fr
Withdrawn legal-status Critical Current

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
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0434—Features relating to lubrication or cooling or heating relating to lubrication supply, e.g. pumps ; Pressure control
    • F16H57/0441—Arrangements of pumps
    • 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
    • F16H61/0028—Supply of control fluid; Pumps therefore using a single pump driven by different power sources

Definitions

  • the invention relates to a motor vehicle drive device according to the preamble of claim 1.
  • DE 199 23 154 AI shows a motor vehicle drive device of this type, in which an oil pump is connected via a freewheel to an electric motor and via another freewheel to a travel drive train. As a result, the oil pump is driven either by the electric motor or the drive train, depending on the speed. There is very little installation space in the engine compartment of motor vehicles, so that it is difficult to accommodate the two freewheels and the electric motor.
  • motor vehicle drive devices whose drive train (motor vehicle drive train) has an internal combustion engine and an automatic transmission axially one after the other, the automatic transmission containing a hydrodynamic torque converter and a mechanical drive transmission which contains planetary gear sets and shifting elements for shifting the planetary gear sets.
  • the torque converter is located axially between the internal combustion engine and the mechanical drive gear.
  • An oil pump is provided for switching the switching elements (switching clutches and / or switching brakes) and for cooling the mechanical drive transmission and for supplying oil to the torque converter, which oil pump can be driven by the travel drive train via a mechanical drive connection.
  • the oil pump is located axially between the torque wall ler and the mechanical drive gear and surrounds a drive shaft.
  • the oil pump of the known automatic transmission is driven by the pump wheel of the torque converter, which is permanently coupled to the crankshaft of the internal combustion engine.
  • the oil pump cannot be driven, so that when the internal combustion engine is switched off, the oil pressure for switching the switching elements (switching clutches and, if applicable, switching brakes) and for lubrication cannot be maintained.
  • the motor vehicle cannot be restarted quickly after the internal combustion engine has stopped.
  • it When starting the motor vehicle, it must be waited until the oil system of the automatic transmission has filled up after the internal combustion engine has started and a sufficiently high oil pressure level has been built up to actuate the switching elements. This is contrary to today's comfort standards.
  • the object of the invention is to achieve the drive device, in particular for passenger cars, in such a way that immediately after starting the vehicle drive motor, which can be an internal combustion engine or an electric motor or another type of motor, which is used to start and drive the motor vehicle required amount of oil and the required oil pressure is present in the motor vehicle drive transmission without requiring more or significantly more installation space.
  • This object is preferably to be achieved in such a way that the solution can also be used for different types of known vehicles manufactured in series, without this requiring a great technical or financial outlay.
  • the solution consists in a motor vehicle drive device containing a motor vehicle drive transmission with variable transmission for torque transmission in a drive train between a drive motor and at least one motor vehicle wheel, an oil pump for supplying the drive transmission with pressurized oil for switching switching elements of the drive transmission ,
  • An electric motor for driving the oil pump characterized in that the oil pump and the electric motor extend around the axis of rotation of a travel drive shaft and are arranged in a drive housing, the stator of the electric motor and a pump housing of the oil pump are fastened to the drive housing, and in that the rotor of the electric motor and a pump rotor of the oil pump are rotatably mounted on the pump housing of the oil pump. Little space is required by the invention.
  • the oil pump can be driven by the electric motor when the travel drive motor is at a standstill and at a low speed, so that the motor vehicle is immediately ready to drive when the travel drive motor is started.
  • the oil pump and its electric motor can be in the housing of the drive device, for. B. in the housing of an automatic transmission, consisting of hydrodynamic torque converter and mechanical transmission part.
  • the oil pump used in today's passenger cars can be retained.
  • the electric motor is integrated in the housing in such a way that little or no changes to the known drive device are required.
  • a short extension of the converter housing may be necessary to create additional installation space.
  • no installation space is required for an additional external oil pump.
  • Sealing the oil channels is also simplified. There are no lines to be laid. The oil can be exchanged with the drive gear, as with existing passenger cars, via the channels already provided for this purpose.
  • the oil pump and its electric motor on the are arranged on the drive input side of the drive transmission, and that between the arrangement of the oil pump and its electric motor on the one hand and the travel drive motor on the other hand there is a spacing area for the positioning of at least one torque transmission device in the drive train, the torque transmission device at least one of the elements switchable clutch, torque converter and / or at least has a further electrical machine and this element can be positioned in the distance region.
  • the further electrical machine can be connected or connectable to the travel drive train as an electric motor and as a generator.
  • the drive device can be used in a modular system with which various motor vehicles, in particular passenger cars, can be equipped.
  • FIG. 1 schematically shows a side view of a motor vehicle drive device according to the invention
  • Fig. 2 is a broken longitudinal section of a special
  • Embodiment of the motor vehicle drive device according to the invention Embodiment of the motor vehicle drive device according to the invention.
  • the drive device of the invention has advantages in particular in the case of passenger cars, since the space conditions there are particularly narrow. However, the invention can also be used for any other type of motor vehicle.
  • the drive device of the invention contains a motor vehicle drive transmission 2 with variable transmission for torque transmission in a drive train between a drive motor 4 and at least one motor vehicle wheel.
  • An oil pump 6 can be driven by an electric motor 8 to supply the drive gear 2 with pressurized oil for switching switching elements of the drive gear and to cool the drive gear 2.
  • the electric motor 8 of the oil pump 6 can be an inner rotor or an outer rotor. In the embodiments shown, it is an inner rotor which has a rotor 11 within a fixed stator 9.
  • the oil pump 6 has a non-rotating pump housing 5 and a pump rotor 7 which is connected to the rotor 11 of the electric motor 8 by a permanently closed mechanical drive connection 10 in a rotationally fixed manner.
  • the traction drive motor 4 and the drive gear 2 are arranged axially to one another and are connected or connectable to one another in terms of drive by an intermediate drive train 12.
  • the oil pump 6 and the electric motor 8 are arranged on the transmission input side of the transmission 2 around a theoretical axis of rotation 26 of the intermediate drive train 12.
  • a spacing area 14 is provided between the arrangement of the oil pump 6 and its electric motor 8 on the one hand and the traction drive motor 4 for the positioning of at least one torque transmission device 16 for torque transmission in the intermediate drive train 12.
  • the torque transmission device 16 has at least one of the elements switchable traction drive clutch, torque converter or at least one further electrical machine, this element being arranged in the spacing region 14. If the element is a hydrodynamic torque converter, then this can form an automatic transmission together with the drive mechanism 2.
  • the drive transmission can have 2 shift elements in the form of shift clutches and / or shift brakes for shifting gears.
  • the drive transmission 2 can be a manually shiftable transmission or an automatically shiftable transmission.
  • the element can be or have at least one or more further electrical machines, which is or can be connected to the intermediate drive train 12 in terms of drive.
  • This further electrical machine can be an electric motor in order to drive the drive gear 2 alone or in addition to the travel drive motor 4.
  • the further electrical machine can be designed such that it can also be operated as a generator for generating electricity, it being possible for it to be driven by the travel drive motor 4 or the vehicle wheels.
  • the further electrical machine can be designed as an electric starter motor for starting the traction drive motor 4 if it is an internal combustion engine.
  • the drive intermediate train 12 in which the torque transmission device 16 is located, contains a transmission input shaft 22 between the torque transmission device 16 and the drive transmission 2, and a crankshaft 24 between the travel drive motor 4 and the torque transmission device 16. Between at least one of these shafts 22 and 24 on the one hand and the torque transmission device 16 on the other hand, a switchable clutch 18 or 20 can be provided, depending on the type of drive device.
  • the oil pump 6 and / or the electric motor 8 are preferably arranged around the intermediate drive train 12, preferably around the transmission input shaft 22.
  • the electric motor 8 has a larger outer diameter than the oil pump 6. As a result, they can be positioned on different radii. According to a preferred embodiment, the oil pump 6 is arranged at least partially axially and radially within the electric motor 8.
  • the drive connection 10 is preferably formed by a rotor 10, which permanently connects the rotor 11 of the electric motor 8 to the pump rotor 7 of the oil pump 6, so that the two parts can only rotate together and cannot be uncoupled from one another.
  • the oil pump 6 is arranged essentially completely radially and axially within the electromagnetically active parts 9-1 and 11-1 of the electric motor 8, so that the rotor disk 10 can extend essentially radially to the axis of rotation 26 of the intermediate drive train 12.
  • the rotor disk 10 is preferably formed in one piece from the rotor 11 to the pump rotor 7. According to a particular embodiment, the rotor disk 10 can form a carrier carrying the electromagnetically active part 11-1 of the rotor 11 and / or can also be formed in one piece with the pump rotor 7. According to another embodiment, the pump rotor 7 is attached to the rotor disk 10.
  • FIG. 2 The special embodiment of FIG. 2 is described below. In it, the same parts as in FIG. 1 are provided with the same reference numbers and with respect to FIG. 2 only differences from FIG. 1 are described. Otherwise, the description of FIG. 1 also applies to FIG. 2.
  • a travel drive shaft which is a motor output shaft or, in the embodiment shown, the transmission input shaft 22, or, according to another embodiment, an axially arranged therebetween Can be intermediate shaft.
  • a housing of the drive can contain the torque transmission device 16, which is a hydrodynamic torque converter in the examples shown, and the drive transmission 2, which together with the torque converter 16 forms an automatic transmission.
  • the drive housing consists of a gear housing 32, in which the drive gear 2 is housed, and from an attachment housing 34, in which the torque converter 16 is housed. Only the flanges of the two housings 32 and 34 are shown in FIG. 2, which are screwed together.
  • the hydrodynamic torque converter 16 has a pump wheel 36, which is connected to the motor output shaft 24 of FIG. 1 by drive or can be connected via a switchable drive drive coupling (not shown), at least one turbine wheel 38 which is connected to the transmission input shaft 22 in a rotationally fixed manner, and at least one stator wheel 40.
  • An oil pump housing 5 of the oil pump 6 and the stator 9 of the electric motor 8 are arranged in the front housing 34 and fastened to the flange of this front housing 34 on the side facing away from the drive gear 2, for example by means of screws 44 and 46.
  • the rotor 11 of the electric motor 8 and the pump rotor 7 of the oil pump 6 are rotatably mounted on the pump housing 5 of the oil pump 6.
  • the rotor disk 10 of the rotor 11 extends over the oil pump 6 on its front end facing away from the drive gear 2.
  • the rotor disk 10 carries the electromagnetically active rotor part 11-1 on its radially outer disk end area and a first bearing point on the radially inner disk end area, preferably in the form of a hollow shaft part 10-2, which extends from an annular disk part 10-1 of the rotor disk 10 backwards to the pump rotor 7 extends and is rotatably connected to this.
  • This rearwardly projecting hollow shaft part 10-2 is mounted radially on the pump housing 5.
  • the rearwardly projecting hollow shaft part 10-2 has a surface 48 pointing outwards from the axis of rotation 26, which surface is radially opposite a surface 50 of the pump housing 5 pointing inwards towards the axis of rotation 26.
  • These two surfaces 48 and 50 can form abutting radial slide bearing surfaces or can be supported radially against one another by at least one or more bearings 52, 54 which are arranged between them.
  • the ring disk part 10-1 has at its radially inner end region also an axially forward-extending hollow shaft part 10-3, which has a bearing point for the radial and, if desired, also axial bearing of the pump wheel 36 of the torque converter 16.
  • the forwardly projecting hollow shaft part 10-3 can overlap a rearwardly projecting hollow shaft part 36-1 of the pump wheel 36 radially on the inside or, according to FIG. 2, radially on the outside and have a surface 58 which is opposite to the surface 60 rear-facing hollow shaft part 36-1 is radially opposite.
  • These two surfaces 58 and 60 can be mutually abutting slide bearing surfaces or can carry at least one intermediate bearing 62 through which the pump wheel 36 of the torque and lers 16 on the rotor disk 10 and thus on the rotor 11 is supported radially and, if desired, also axially.
  • the pump wheel 36 is thus mounted radially, possibly also axially, on the pump housing 5 of the oil pump 6 via the rotor 11 or its rotor disk 10 and can be rotated both relative to the rotor 11 and relative to the pump housing 5.
  • the pump wheel 7 of the oil pump 6 can only be driven by the rotor 11 of the electric motor 8.
  • a single freewheel 66 is provided, through which the pump wheel 36 of the torque converter 16, and thus also the motor output shaft 12 of FIG. 1, can be coupled to the pump rotor 7 in order to drive the pump rotor 7 when the pump wheel 36 of the torque converter 16 rotates faster than the rotor 11 of the electric motor 8, for example when the electric motor 8 is switched off.
  • the freewheel 66 can be arranged directly between the pump rotor 7 of the oil pump 6 and a part, for example the rearwardly projecting hollow shaft part 36-1, of the pump wheel 36. According to the preferred embodiment, which is shown in FIG. 2, the freewheel 66 is located between the rearwardly projecting hollow shaft part 36-1 of the pump wheel 36 and the forwardly projecting hollow shaft part 10-, which extends radially outside thereof via this hollow shaft part 36-1. 3 of the rotor disk 10. As a result, the pump rotor 7 of the oil pump 6 can be driven by the pump wheel 36 of the torque converter 16 via the filing run 66 and the rotor disk 10.
  • the electric motor 8, but at least its rotor 11, are arranged in an air space 68 within the front housing 34.
  • the rotor 11 has a considerably lower rotational resistance than if it were arranged in an oil-filled space.
  • the rotating rotor 11 can be cooled by the air in the air space 68.
  • a cooling duct arrangement with at least one cooling duct 70 is provided for further cooling the rotor, but in particular for cooling the stator 9 and its electromagnetically active stator part 9-1. This is preferably formed along the electromagnetically active part 9-1 of the stator 9 and through which cooling liquid can flow.
  • the oil of the oil pump 6, which flows via channels (not shown) from the oil pump 6 into the cooling channel 70 and back into the oil pump 6, preferably serves as the cooling liquid.
  • the oil channel 70 preferably extends around the entire circumference of the stator 9, preferably on the outside thereof and preferably also on at least one end face in the region of the electromagnetically active stator part 9-1.
  • another cooling liquid from another cooling source can be used instead of the oil of the oil pump 6.
  • the electric motor 8 is independent of the travel drive train and its torques.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Hybrid Electric Vehicles (AREA)
  • Arrangement Of Transmissions (AREA)
  • General Details Of Gearings (AREA)
  • Control Of Transmission Device (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

L'invention concerne un dispositif d'entraînement de véhicule comportant un moteur électrique (8) destiné à entraîner une pompe à huile (6) dans une chambre d'air (68) d'un carter au moyen d'un disque (10) du rotor (11) du moteur électrique, ledit rotor (11) étant relié durablement à un rotor (7) de la pompe à huile. Le dispositif selon l'invention peut par ailleurs comporter un seul couplage à roue libre (66) destiné à l'entraînement mécanique du rotor (7) de la pompe à huile (6) par la chaîne cinématique (36).
EP03788967A 2002-11-02 2003-10-25 Dispositif d'entrainement de vehicule Withdrawn EP1561051A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE2002151041 DE10251041A1 (de) 2002-11-02 2002-11-02 Kraftfahrzeug-Antriebsvorrichtung
DE10251041 2002-11-02
PCT/EP2003/011868 WO2004042258A1 (fr) 2002-11-02 2003-10-25 Dispositif d'entrainement de vehicule

Publications (1)

Publication Number Publication Date
EP1561051A1 true EP1561051A1 (fr) 2005-08-10

Family

ID=32115116

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03788967A Withdrawn EP1561051A1 (fr) 2002-11-02 2003-10-25 Dispositif d'entrainement de vehicule

Country Status (4)

Country Link
EP (1) EP1561051A1 (fr)
JP (1) JP4239016B2 (fr)
DE (1) DE10251041A1 (fr)
WO (1) WO2004042258A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10251042A1 (de) * 2002-11-02 2004-05-19 Daimlerchrysler Ag Kraftfahrzeug-Antriebsvorrichtung
JP3967308B2 (ja) 2003-09-29 2007-08-29 本田技研工業株式会社 ハイブリッド車両
DE102006008430A1 (de) 2006-02-23 2007-08-30 Zf Friedrichshafen Ag Antriebseinrichtung für die Ölpumpe eines Kraftfahrzeuggetriebes
DE102006048050A1 (de) * 2006-10-11 2008-04-17 Bayerische Motoren Werke Ag Pumpenanordnung und Verfahren zum Betreiben derselben
JP5380403B2 (ja) 2010-09-10 2014-01-08 ジヤトコ株式会社 自動変速機及び油圧制御装置
DE102012111202A1 (de) * 2012-11-21 2014-05-22 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Verfahren und Vorrichtung zum Betrieb eines Kraftfahrzeuges
DE102014209301A1 (de) * 2014-05-16 2015-11-19 Robert Bosch Gmbh Antriebsstrang für mobile Anwendungen
DE102017216091A1 (de) * 2017-09-12 2019-03-14 Zf Friedrichshafen Ag Ölversorgungsanordnung eines Automatikgetriebes
DE102019207254A1 (de) * 2019-05-17 2020-11-19 Zf Friedrichshafen Ag Verfahren und Steuergerät zum Betreiben eines Antriebsstrangs eines Kraftfahrzeugs

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Publication number Priority date Publication date Assignee Title
DE4134268C2 (de) * 1990-10-29 2001-05-17 Volkswagen Ag Antriebsanordnung für ein Kraftfahrzeug
JP3182987B2 (ja) * 1993-06-16 2001-07-03 株式会社エクォス・リサーチ ハイブリット車輌における潤滑装置
US5558175A (en) * 1994-12-13 1996-09-24 General Motors Corporation Hybrid power transmission
JP3562237B2 (ja) * 1997-07-09 2004-09-08 株式会社日本自動車部品総合研究所 複合型圧縮機
JPH11107798A (ja) * 1997-10-08 1999-04-20 Aisin Aw Co Ltd ハイブリッド駆動装置
JP4055297B2 (ja) * 1998-12-11 2008-03-05 トヨタ自動車株式会社 伝動装置用電動オイルポンプを備えた車両の制御装置
DE19923316A1 (de) * 1999-05-21 2000-11-23 Zahnradfabrik Friedrichshafen Antriebssystem für ein Kraftfahrzeug
DE10160466C1 (de) * 2001-12-08 2003-06-05 Daimler Chrysler Ag Kraftfahrzeug-Antriebseinrichtung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2004042258A1 *

Also Published As

Publication number Publication date
DE10251041A1 (de) 2004-05-19
JP2006504915A (ja) 2006-02-09
JP4239016B2 (ja) 2009-03-18
WO2004042258A1 (fr) 2004-05-21

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