WO2014111217A1 - Hybrid drive system for a motor vehicle - Google Patents

Hybrid drive system for a motor vehicle Download PDF

Info

Publication number
WO2014111217A1
WO2014111217A1 PCT/EP2013/076828 EP2013076828W WO2014111217A1 WO 2014111217 A1 WO2014111217 A1 WO 2014111217A1 EP 2013076828 W EP2013076828 W EP 2013076828W WO 2014111217 A1 WO2014111217 A1 WO 2014111217A1
Authority
WO
WIPO (PCT)
Prior art keywords
motor vehicle
transmission
gear
electric machine
drive system
Prior art date
Application number
PCT/EP2013/076828
Other languages
German (de)
French (fr)
Inventor
Uwe Griesmeier
Michael Roske
Original Assignee
Zf Friedrichshafen Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zf Friedrichshafen Ag filed Critical Zf Friedrichshafen Ag
Publication of WO2014111217A1 publication Critical patent/WO2014111217A1/en

Links

Classifications

    • 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
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/38—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the driveline clutches
    • B60K6/387—Actuated clutches, i.e. clutches engaged or disengaged by electric, hydraulic or mechanical actuating means
    • 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
    • B60K23/08—Arrangement or mounting of control devices for vehicle transmissions, or parts thereof, not otherwise provided for for changing number of driven wheels, for switching from driving one axle to driving two or more axles
    • 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
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/42—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
    • B60K6/48—Parallel type
    • 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
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/50—Architecture of the driveline characterised by arrangement or kind of transmission units
    • B60K6/52—Driving a plurality of drive axles, e.g. four-wheel drive
    • 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
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K2001/001—Arrangement or mounting of electrical propulsion units one motor mounted on a propulsion axle for rotating right and left wheels of this axle
    • 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
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/42—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
    • B60K6/48—Parallel type
    • B60K2006/4808—Electric machine connected or connectable to gearbox output shaft
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/62—Hybrid vehicles

Definitions

  • the invention relates to a hybrid drive system for a motor vehicle, comprising an internal combustion engine, a continuously variable or shiftable transmission and at least one electric machine, wherein by the internal combustion engine via the transmission and a differential gear, a first axis of the motor vehicle and arranged parallel to the internal combustion engine at least one electric machine the first axis and / or a second axis of the motor vehicle can be driven.
  • such a hybrid drive system which has an internal combustion engine, a transmission and at least one electric machine, wherein at least one electric machine in the direction of force flow is arranged according to the drive gear, the electric machine via a transmission to the drive train coupled, and the transmission is designed as a planetary gear set with three shafts.
  • the first shaft is rotatably connected to the transmission output, the second shaft to the rotor of the electric machine and the third shaft to the output of the drive train.
  • a switching element is present, which is preferably designed as a dog clutch, and releasably connects the rotor of the electric machine with the transmission output.
  • the hybrid functions boost and recuperate can be performed. Furthermore, a traction interruption can be at least partially compensated for during engine operation of the electric machine during a shifting process in the transmission. In addition, a purely electric drive with closed switching element in the neutral position of the transmission is possible.
  • a multi-axis hybrid drive system for a motor vehicle is known from DE 10 2008 043 849 A1.
  • This multi-axis hybrid propulsion system has a first unit that includes an internal combustion engine, a disconnect clutch, and an automated manual transmission associated with a first, mechanically driven axle of the vehicle.
  • at least one further unit is present, which has electric wheel hub motors or a conventional electric final drive in conjunction with an electric machine, wherein one respective further unit is assigned in each case an electrically driven axle of the vehicle.
  • this hybrid drive system it is provided that during a gear change the vehicle is drivable by the unit associated with the electrically driven axle in such a way that the traction interruption in the automated manual transmission is compensated during the gear change.
  • an automated gearbox and a power shift transmission can be provided.
  • a purely electric drive in the neutral position of the transmission and / or open disconnect between the engine and the transmission leads to quite high drag torque in the transmission, which lead to increased consumption of electrical energy and thus to a reduction in range at a given battery capacity. Furthermore, the operation in the neutral position of the transmission can cause impermissibly high internal transmission speeds.
  • the present invention seeks to propose a hybrid drive system for a motor vehicle, which can be avoided with the drag torque of the transmission and inadmissible high internal transmission speeds.
  • the invention is based on the finding that impermissibly high transmission speeds and transmission drag torques can be avoided in a purely electric drive of the motor vehicle when not only the internal combustion engine but also the transmission is completely separated from the electrically driven parts of the vehicle drive.
  • the invention is therefore based on a hybrid drive system for a motor vehicle, comprising an internal combustion engine, a continuously variable or shiftable transmission and at least one electric machine, wherein by the internal combustion engine via the transmission and a differential gear, a first axis of the motor vehicle and arranged parallel to the engine at least an electrical machine, the first axis and / or a second axis of the motor vehicle are driven.
  • at least one decoupling device is arranged at least between the first axis of the motor vehicle and the transmission.
  • the decoupling device is arranged between the differential and the transmission. This arrangement is easily possible both in a front-wheel drive arrangement and in a rear-wheel drive arrangement of the motor vehicle, when the decoupling device is arranged on the output shaft of the transmission or on the input shaft of the differential gear.
  • the Abkoppel shark hip joint can advantageously be arranged on a gear of the spur gear set, preferably on a gear on an intermediate shaft of the spur gear set.
  • the at least one electric machine can structurally arrange in a common housing with the transmission and the differential gear, so that the at least one electric machine on the spur gear to drive the differential gear driving can.
  • the transmission, the at least one electric machine and the differential gear that is, regardless of whether it is a motor vehicle with front-wheel drive, rear-wheel drive or four-wheel drive, the at least one decoupling device between a wheel arranged drive shaft and an associated gear of the differential gear and connected thereto.
  • the Abkoppel beautiful may be formed in a known manner as a dog clutch with or without synchronizer, or as a friction clutch.
  • the actuation of the Abkoppel prepared can be done in a known manner by a seated in the shaft, radially acting actuator, or it can be arranged coaxially to the Abkoppel observed the actuator, wherein the actuator can be actuated hydraulically, pneumatically or electrically by guided through the shaft power supply lines.
  • FIG. 1 shows a hybrid drive system for a motor vehicle, in which the internal combustion engine and the transmission are installed in a front-transverse arrangement in the motor vehicle and at least one electric motor drives effectively acts on the drive for the differential,
  • Fig. 2 is a schematic view of a motor vehicle with a two-axle drive, in which the internal combustion engine and the transmission are installed in front-transverse arrangement in the motor vehicle and drive a first axis of the motor vehicle, while at least one electric motor driven by a second axis of the motor vehicle is 3 shows a detailed representation of the drive system of the first axle of the vehicle according to FIG. 2 with arrangement of the decoupling device on a gear of a front wheel set between the transmission and the differential, and
  • Fig. 4 is a detailed illustration of the drive system for the first axis of the motor vehicle according to FIG. 2 with arrangement of the decoupling device on the differential.
  • a hybrid drive system for a motor vehicle is shown schematically, which acts via a front-axle differential 10 on a first axis 2, which is designed here as a front axle of the motor vehicle 1 and a right front wheel 3 and a left front wheel 4 has.
  • the hybrid drive system initially has an internal combustion engine 8 and a transmission 9, wherein the latter can be designed as a continuously variable or shiftable transmission. If this transmission 9 is a multi-step transmission, it may be formed in a known manner as a manual transmission or as an automatic transmission with power shift elements.
  • the drive of the front-axle differential 10 takes place on the one hand by the internal combustion engine 8 via a starting element 17, which may be formed as a conventional friction clutch, as a conventional torque converter or as an electric machine, the gear 9 and a spur gear set.
  • This Stirniereradsatz consists in this embodiment of a rotatably connected to a transmission output shaft 32 first gear 18, a rotatably connected to an intermediate shaft 20 first intermediate gear 19, designed as a loose wheel and rotatably mounted on the intermediate shaft 20 second intermediate gear 21, and one with the housing
  • the idle gear formed second intermediate gear 21 can be coupled by means of a Abkoppel worn 23 to the intermediate shaft 20 or decouple from this.
  • front-axle differential 10 In the front-axle differential 10 are connected to a Radantriebswelle 1 1 for the right front wheel 3 first bevel gear 24, one with a Radantriebswel- le 12 for the left front wheel 4 connected bevel gear 25 and a first and a second bevel gear 26, 27 are arranged.
  • the attached to the housing of the differential gear 10 gear 22 also meshes with a fifth gear 28 which is rotatably connected to the drive shaft 29 of an electric machine 30.
  • the internal combustion engine 8 can drive the axle 2 with the front wheels 3, 4, whereas with the uncoupling device 23 open, this is not possible.
  • the decoupling device 23 is open, therefore, a drive of the first axle 2 with the front wheels 3, 4 can take place only by means of the electric machine 30.
  • the transmission 9, the front-axle differential 10, the electric machine 30 and the said gears 18, 19, 21, 22 and 28 can, as shown in FIG. 1, be arranged in a common housing 31, resulting in a compact design.
  • the hybrid drive system shown in Fig. 1, as shown in Fig. 2 may be arranged in a motor vehicle 1, which has two driven axles 2, 5.
  • the first driven axle 2 represents the front axle of the motor vehicle 1
  • the internal combustion engine 8 and the gearbox 9 with the front axle differential 10 are installed in front-transverse arrangement in the motor vehicle 1.
  • the second axis 5, which forms the rear axle of the motor vehicle 1, is drivable by means of an electric machine 13, which via a rear differential gear 14 on a left rear wheel 6 leading left wheel drive shaft 15 and on the right rear wheel 7 leading right wheel drive shaft 1 6th acts.
  • the second axle 5 of the motor vehicle 1 is a front axle and the first axle 2 as a rear axle of the motor vehicle 1, when the motor vehicle 1 is, for example, a bus with a rear engine.
  • the motor vehicle 1 may also be an articulated bus, as shown and described in DE 10 2008 043 849 A1, wherein the first axle 2 then forms the last axle of a rear carriage of the articulated bus, while the second axle 5 forms the rear axle of the front end.
  • a corresponding arrangement is also possible in connection with a more than two-axle motor vehicle without joint.
  • the hybrid drive system shown in FIG. 1 can also operate without an electrically driven second axle 5 of the motor vehicle 1, while the hybrid drive system according to FIG. 3 consists of an internal combustion engine drive for the first axle 2 of the motor vehicle 1 and the second motor 5 driven by the motor vehicle 1 according to FIG. 2.
  • the electric machine 30 with its drive shaft 29 and the fourth gear 28 omitted, but still the uncoupler 23 is present. Therefore, the motor vehicle 1 either on the first axis 2 alone by means of the internal combustion engine 8, solely by means of the electric machine 13 on the second axis 5 or additive combustion engine and electrically drive.
  • the front-axle differential 10 is formed in a known manner as a bevel gear with the first bevel gear 24 and a second bevel gear 25 and a first bevel gear 26 and a second bevel gear 27, which are arranged in a common housing. It is also possible to design the differential gear 10, as well as the differential gear 14 shown in FIG. 2 on the second axis 5 in a known manner as Stirnradaus Dermats.
  • the electric machine 30 is shown acting on the front-axle differential 10 and the electric machine 13 acting on the rear-axle differential 14. It is also possible, in each case an electric machine on each wheel 3, 4, 6, 7 acting to provide, in which case the rear axle differential gear 14 on the second axis 5 of FIG. 2 can be omitted.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Hybrid Electric Vehicles (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

The invention relates to a hybrid drive system for a motor vehicle (1), comprising an internal combustion engine (8), a continuously variable or step-change gearbox (9) and at least one electric machine (13, 30), wherein a first axle (2) of the motor vehicle (1) can be driven by the internal combustion engine (8) via the gearbox (9) and a differential gear (10), and the first axle (2) and/or a second axle (5) of the motor vehicle (1) can be driven by the at least one electric machine (13, 30) arranged in parallel with the internal combustion engine (1). Here, a decoupling device (23) is arranged at least between the first axle (2) of the motor vehicle (1)and the gearbox (9).

Description

Hybridantriebsvstem für ein Kraftfahrzeug  Hybridantriebsvstem for a motor vehicle
Die Erfindung betrifft ein Hybridantriebssystem für ein Kraftfahrzeug, aufweisend eine Brennkraftmaschine, ein stufenloses oder schaltbares Getriebe und zumindest eine elektrische Maschine, wobei durch die Brennkraftmaschine über das Getriebe und ein Ausgleichsgetriebe eine erste Achse des Kraftfahrzeugs sowie durch die parallel zur Brennkraftmaschine angeordnete zumindest eine elektrische Maschine die erste Achse und/oder eine zweite Achse des Kraftfahrzeugs antreibbar sind. The invention relates to a hybrid drive system for a motor vehicle, comprising an internal combustion engine, a continuously variable or shiftable transmission and at least one electric machine, wherein by the internal combustion engine via the transmission and a differential gear, a first axis of the motor vehicle and arranged parallel to the internal combustion engine at least one electric machine the first axis and / or a second axis of the motor vehicle can be driven.
Aus der DE 10 2008 044 038 A1 ist ein derartiges Hybridantriebssystem bekannt, das einen Verbrennungsmotor, ein Getriebe und zumindest eine elektrische Maschine aufweist, wobei zumindest eine elektrische Maschine in Kraftflussrichtung antriebstechnisch nach dem Getriebe angeordnet ist, die elektrische Maschine über ein Getriebe an den Antriebsstrang gekoppelt ist, und das Getriebe als Planetensatz mit drei Wellen ausgeführt ist. Bei diesem Planetensatz ist die erste Welle mit dem Getriebeausgang, die zweite Welle mit dem Rotor der elektrischen Maschine und die dritte Welle mit dem Abtrieb des Antriebsstrangs drehfest verbunden. Weiterhin ist ein Schaltelement vorhanden, das vorzugsweise als Klauenkupplung ausgeführt ist, und das den Rotor der elektrischen Maschine mit dem Getriebeausgang lösbar verbindet. Bei geschlossenem Schaltelement und eingelegtem Gang im Getriebe lassen sich die Hybridfunktionen Boosten und Rekuperieren durchführen. Des Weiteren lässt sich bei motorischem Betrieb der elektrischen Maschine während eines Schaltvorgangs im Getriebe eine Zugkraftunterbrechung zumindest teilweise kompensieren. Außerdem ist eine rein elektrische Fahrt bei geschlossenem Schaltelement in der Neutralstellung des Getriebes möglich. From DE 10 2008 044 038 A1, such a hybrid drive system is known, which has an internal combustion engine, a transmission and at least one electric machine, wherein at least one electric machine in the direction of force flow is arranged according to the drive gear, the electric machine via a transmission to the drive train coupled, and the transmission is designed as a planetary gear set with three shafts. In this planetary gear set, the first shaft is rotatably connected to the transmission output, the second shaft to the rotor of the electric machine and the third shaft to the output of the drive train. Furthermore, a switching element is present, which is preferably designed as a dog clutch, and releasably connects the rotor of the electric machine with the transmission output. When the shift element is closed and gear engaged in the transmission, the hybrid functions boost and recuperate can be performed. Furthermore, a traction interruption can be at least partially compensated for during engine operation of the electric machine during a shifting process in the transmission. In addition, a purely electric drive with closed switching element in the neutral position of the transmission is possible.
Ein mehrachsiges Hybrid-Antriebssystem für ein Kraftfahrzeug ist aus der DE 10 2008 043 849 A1 bekannt. Dieses mehrachsige Hybrid-Antriebssystem weist eine erste Einheit auf, die einen Verbrennungsmotor, eine Trennkupplung und ein automatisiertes Schaltgetriebe umfasst, welche einer ersten, mechanisch angetriebenen Achse des Fahrzeugs zugeordnet ist. Des Weiteren ist zumindest eine weitere Einheit vorhanden, die elektrische Radnabenmotoren oder einen konventionellen elektrischen Achsantrieb in Verbindung mit einer elektrischen Maschine aufweist, wobei jeweils eine weitere Einheit jeweils einer elektrisch angetriebenen Achse des Fahrzeugs zugeordnet ist. Bei diesem Hybrid-Antriebssystem ist vorgesehen, dass das Fahrzeug während eines Gangwechsels von der der elektrisch angetriebenen Achse zugeordneten Einheit derart antreibbar ist, dass die Zugkraftunterbrechung im automatisierten Schaltgetriebe während des Gangwechseins kompensiert wird. Anstelle eines automatisierten Schaltgetriebes kann auch ein Lastschaltautomatgetriebe vorgesehen sein. Mit diesem mehrachsigen Hybrid-Antriebssystem wird ein rein mechanischer, ein rein elektrischer und ein kombinierter Betrieb durch das gleichzeitige Antreiben der mechanisch und der zumindest einen elektrisch angetriebenen Achse ermöglicht, wobei sich im rein elektrischen Betrieb das automatisierte Schaltgetriebe oder das Lastschaltautomatgetriebe in seiner Neutralstellung befinden muss, oder die Trennkupplung zwischen der Brennkraftmaschine und dem Getriebe geöffnet sein muss. A multi-axis hybrid drive system for a motor vehicle is known from DE 10 2008 043 849 A1. This multi-axis hybrid propulsion system has a first unit that includes an internal combustion engine, a disconnect clutch, and an automated manual transmission associated with a first, mechanically driven axle of the vehicle. Furthermore, at least one further unit is present, which has electric wheel hub motors or a conventional electric final drive in conjunction with an electric machine, wherein one respective further unit is assigned in each case an electrically driven axle of the vehicle. In this hybrid drive system, it is provided that during a gear change the vehicle is drivable by the unit associated with the electrically driven axle in such a way that the traction interruption in the automated manual transmission is compensated during the gear change. Instead of an automated gearbox and a power shift transmission can be provided. With this multi-axis hybrid drive system, a purely mechanical, a purely electrical and a combined operation is enabled by the simultaneous driving of the mechanically and the at least one electrically driven axle, which must be in its neutral position in purely electrical operation, the automated manual transmission or powershift transmission , or the separating clutch between the internal combustion engine and the transmission must be open.
Eine rein elektrische Fahrt in der Neutralstellung des Getriebes und/oder bei geöffneter Trennkupplung zwischen der Brennkraftmaschine und dem Getriebe führt zu recht hohen Schleppmomenten im Getriebe, die zu einem erhöhten Verbrauch an elektrischer Energie und damit zu einer Verminderung der Reichweite bei einer vorgegebenen Batteriekapazität führen. Des Weiteren kann der Betrieb in der Neutralstellung des Getriebes unzulässig hohe innere Getriebedrehzahlen hervorrufen. A purely electric drive in the neutral position of the transmission and / or open disconnect between the engine and the transmission leads to quite high drag torque in the transmission, which lead to increased consumption of electrical energy and thus to a reduction in range at a given battery capacity. Furthermore, the operation in the neutral position of the transmission can cause impermissibly high internal transmission speeds.
Vor diesem Hintergrund liegt der Erfindung die Aufgabe zugrunde, ein Hybridantriebssystem für ein Kraftfahrzeug vorzuschlagen, mit dem sich die Schleppmomente des Getriebes sowie unzulässig hohe, innere Getriebedrehzahlen vermeiden lassen. Against this background, the present invention seeks to propose a hybrid drive system for a motor vehicle, which can be avoided with the drag torque of the transmission and inadmissible high internal transmission speeds.
Diese Aufgabe ist durch ein Hybridantriebssystem mit den Merkmalen des Anspruchs 1 gelöst. Vorteilhafte Ausführungsformen und Weiterbildungen sind den Unteransprüchen entnehmbar. This object is achieved by a hybrid drive system having the features of claim 1. Advantageous embodiments and further developments can be taken from the subclaims.
Der Erfindung liegt die Erkenntnis zugrunde, dass sich bei einem rein elektrischen Antrieb des Kraftfahrzeugs unzulässig hohe Getriebedrehzahlen und Getriebeschleppmomente vermeiden lassen, wenn nicht nur die Brennkraftmaschine sondern auch das Getriebe vollständig von den elektrisch angetriebenen Teilen des Fahrzeugantriebs getrennt ist. Die Erfindung geht daher aus von einem Hybridantriebssystem für ein Kraftfahrzeug, aufweisend eine Brennkraftmaschine, ein stufenloses oder schaltbares Getriebe und zumindest eine elektrische Maschine, wobei durch die Brennkraftmaschine über das Getriebe und ein Ausgleichsgetriebe eine erste Achse des Kraftfahrzeugs sowie durch die parallel zur Brennkraftmaschine angeordnete zumindest eine elektrische Maschine die erste Achse und/oder eine zweite Achse des Kraftfahrzeugs antreibbar sind. Die gestellte Aufgabe ist dadurch gelöst, dass zumindest zwischen der ersten Achse des Kraftfahrzeugs und dem Getriebe wenigstens eine Abkoppeleinrichtung angeordnet ist. The invention is based on the finding that impermissibly high transmission speeds and transmission drag torques can be avoided in a purely electric drive of the motor vehicle when not only the internal combustion engine but also the transmission is completely separated from the electrically driven parts of the vehicle drive. The invention is therefore based on a hybrid drive system for a motor vehicle, comprising an internal combustion engine, a continuously variable or shiftable transmission and at least one electric machine, wherein by the internal combustion engine via the transmission and a differential gear, a first axis of the motor vehicle and arranged parallel to the engine at least an electrical machine, the first axis and / or a second axis of the motor vehicle are driven. The stated object is achieved in that at least one decoupling device is arranged at least between the first axis of the motor vehicle and the transmission.
Vorzugsweise ist die Abkoppeleinrichtung zwischen dem Ausgleichsgetriebe und dem Getriebe angeordnet. Diese Anordnung ist sowohl bei einer Frontantriebsanordnung als auch bei einer Heckantriebsanordnung des Kraftfahrzeugs problemlos möglich, wenn die Abkoppeleinrichtung an der Ausgangswelle des Getriebes oder an der Eingangswelle des Ausgleichsgetriebes angeordnet wird. Preferably, the decoupling device is arranged between the differential and the transmission. This arrangement is easily possible both in a front-wheel drive arrangement and in a rear-wheel drive arrangement of the motor vehicle, when the decoupling device is arranged on the output shaft of the transmission or on the input shaft of the differential gear.
Wenn die Brennkraftmaschine und das Getriebe für deren Einbau in Front-Quer- Anordnung in das Kraftfahrzeug ausgebildet und zusammengebaut sind sowie die Kraftübertragung vom Getriebe zum Ausgleichsgetriebe über einen Stirnradsatz erfolgt, dann kann die Abkoppeleinrichtung vorteilhafterweise an einem Zahnrad des Stirn rad- satzes angeordnet sein, vorzugsweise an einem Zahnrad auf einer Zwischenwelle des Stirnradsatzes. If the internal combustion engine and the transmission for their installation in front-transverse arrangement are formed and assembled in the motor vehicle and the power transmission from the transmission to the differential gear via a spur gear, then the Abkoppeleinrichtung can advantageously be arranged on a gear of the spur gear set, preferably on a gear on an intermediate shaft of the spur gear set.
Bei einer Anordnung der Brennkraftmaschine und des Getriebes im Fahrzeug in Front-Quer-Bauweise lässt sich die zumindest eine elektrische Maschine baulich in einem gemeinsamen Gehäuse mit dem Getriebe und dem Ausgleichsgetriebe anordnen, so dass die zumindest eine elektrische Maschine an dem Stirnradsatz zum Ausgleichsgetriebe antreibend angreifen kann. In an arrangement of the internal combustion engine and the transmission in the vehicle in front-transverse construction, the at least one electric machine can structurally arrange in a common housing with the transmission and the differential gear, so that the at least one electric machine on the spur gear to drive the differential gear driving can.
Unabhängig von der Anordnung der Brennkraftmaschine, des Getriebes, der zumindest einen elektrischen Maschine und des Ausgleichsgetriebes, das heißt, unabhängig davon, ob es sich um ein Kraftfahrzeug mit Frontantrieb, Heckantrieb oder Allradantrieb handelt, kann die wenigstens eine Abkoppeleinrichtung zwischen einer Rad- antriebswelle und einem zugehörigen Zahnrad des Ausgleichsgetriebes angeordnet und mit diesen verbunden sein. Bei geöffneter Abkoppeleinrichtung ist die Verbindung zwischen dem Ausgleichsgetriebe und der einen Radwelle getrennt, so dass bei einem elektrischen Antrieb des Fahrzeugs die drehbaren Bauteile des mit dem Ausgleichsgetriebe in Antriebsverbindung stehenden Getriebes stillstehen, auch wenn sich die Achswellen mit den Rädern des Kraftfahrzeugs drehen. Regardless of the arrangement of the internal combustion engine, the transmission, the at least one electric machine and the differential gear, that is, regardless of whether it is a motor vehicle with front-wheel drive, rear-wheel drive or four-wheel drive, the at least one decoupling device between a wheel arranged drive shaft and an associated gear of the differential gear and connected thereto. When Abkoppeleinrichtung open the connection between the differential gear and the one wheel shaft is disconnected, so that stand in an electric drive of the vehicle, the rotatable components of the stand with the differential gear in drive connection gear, even if the axle shafts rotate with the wheels of the motor vehicle.
Bei nur einer Abkoppeleinrichtung zwischen einer Radantriebswelle und einem zugehörigen Zahnrad im Ausgleichsgetriebe drehen sich die Zahnräder im Ausgleichsgetriebe und erzeugen ein geringfügiges Schleppmoment. Dieses Schleppmoment lässt sich ganz vermeiden, wenn je eine Abkoppeleinrichtung zwischen je einer Radantriebswelle und je einem zugehörigen Zahnrad im Ausgleichsgetriebe angeordnet wird. With only one Abkoppeleinrichtung between a wheel drive shaft and an associated gear in the differential gear, the gears rotate in the differential and generate a slight drag torque. This drag torque can be completely avoided if ever a decoupling between each wheel drive shaft and one associated gear in the differential gear is arranged.
Die Abkoppeleinrichtung kann in bekannter Weise als Klauenkupplung mit oder ohne Synchronisiereinrichtung, oder als Reibungskupplung ausgebildet sein. Die Betätigung der Abkoppeleinrichtung kann in bekannter Weise durch einen in der Welle sitzenden, radial wirkenden Aktuator erfolgen, oder es kann der Aktuator koaxial zur Abkoppeleinrichtung angeordnet sein, wobei sich der Aktuator hydraulisch, pneumatisch oder elektrisch mittels durch die Welle geführte Energiezufuhrleitungen betätigen lässt. The Abkoppeleinrichtung may be formed in a known manner as a dog clutch with or without synchronizer, or as a friction clutch. The actuation of the Abkoppeleinrichtung can be done in a known manner by a seated in the shaft, radially acting actuator, or it can be arranged coaxially to the Abkoppeleinrichtung the actuator, wherein the actuator can be actuated hydraulically, pneumatically or electrically by guided through the shaft power supply lines.
Die Erfindung wird nachstehend anhand mehrerer in einer Zeichnung dargestellter Ausführungsbeispiele weiter erläutert. In der Zeichnung zeigt The invention will be explained below with reference to several embodiments shown in a drawing on. In the drawing shows
Fig. 1 ein Hybridantriebssystem für ein Kraftfahrzeug, bei dem die Brennkraftmaschine und das Getriebe in Front-Quer-Anordnung in das Kraftfahrzeug eingebaut sind und zumindest eine elektrische Maschine antriebswirksam am Antrieb für das Ausgleichsgetriebe angreift, 1 shows a hybrid drive system for a motor vehicle, in which the internal combustion engine and the transmission are installed in a front-transverse arrangement in the motor vehicle and at least one electric motor drives effectively acts on the drive for the differential,
Fig. 2 eine schematische Ansicht eines Kraftfahrzeugs mit einem Zweiachsantrieb, bei dem die Brennkraftmaschine und das Getriebe in Front-Quer-Anordnung in das Kraftfahrzeug eingebaut sind und eine erste Achse des Kraftfahrzeugs antreiben, während mittels wenigstens einer elektrischen Maschine eine zweite Achse des Kraftfahrzeugs antreibbar ist, Fig. 3 eine detaillierte Darstellung des Antriebssystems der ersten Achse des Fahrzeugs gemäß Fig. 2 mit Anordnung der Abkoppeleinrichtung an einem Zahnrad eines Stirn radsatzes zwischen dem Getriebe sowie dem Ausgleichsgetriebe, und Fig. 2 is a schematic view of a motor vehicle with a two-axle drive, in which the internal combustion engine and the transmission are installed in front-transverse arrangement in the motor vehicle and drive a first axis of the motor vehicle, while at least one electric motor driven by a second axis of the motor vehicle is 3 shows a detailed representation of the drive system of the first axle of the vehicle according to FIG. 2 with arrangement of the decoupling device on a gear of a front wheel set between the transmission and the differential, and
Fig. 4 eine detaillierte Darstellung des Antriebssystems für die erste Achse des Kraftfahrzeugs gemäß Fig. 2 mit Anordnung der Abkoppeleinrichtung am Ausgleichsgetriebe. Fig. 4 is a detailed illustration of the drive system for the first axis of the motor vehicle according to FIG. 2 with arrangement of the decoupling device on the differential.
In Fig. 1 ist schematisch ein Hybridantriebssystem für ein Kraftfahrzeug dargestellt, das über ein Vorderachs-Ausgleichsgetriebe 10 auf eine erste Achse 2 wirkt, die hier als Vorderachse des Kraftfahrzeugs 1 ausgebildet ist und ein rechtes Vorderrad 3 sowie ein linkes Vorderrad 4 aufweist. Das Hybridantriebssystem weist zunächst eine Brennkraftmaschine 8 und ein Getriebe 9 auf, wobei letzteres als ein stufenloses oder schaltbares Getriebe ausgebildet sein kann. Wenn dieses Getriebe 9 ein Stufenschaltgetriebe ist, kann es in bekannter Weise als Handschaltgetriebe oder als Automatgetriebe mit Lastschaltelementen ausgebildet sein. In Fig. 1, a hybrid drive system for a motor vehicle is shown schematically, which acts via a front-axle differential 10 on a first axis 2, which is designed here as a front axle of the motor vehicle 1 and a right front wheel 3 and a left front wheel 4 has. The hybrid drive system initially has an internal combustion engine 8 and a transmission 9, wherein the latter can be designed as a continuously variable or shiftable transmission. If this transmission 9 is a multi-step transmission, it may be formed in a known manner as a manual transmission or as an automatic transmission with power shift elements.
Der Antrieb des Vorderachs-Ausgleichsgetriebes 10 erfolgt einerseits durch die Brennkraftmaschine 8 über ein Anfahrelement 17, das als herkömmliche Reibungskupplung, als herkömmlicher Drehmomentwandler oder als eine elektrische Maschine ausgebildet sein kann, das Getriebe 9 und einen Stirnzahnradsatz. Dieser Stirnzahnradsatz besteht in diesem Ausführungsbeispiel aus einem mit einer Getriebeausgangswelle 32 drehfest verbundenen ersten Zahnrad 18, einem mit einer Zwischenwelle 20 dreh fest verbundenen ersten Zwischenzahnrad 19, einem als Losrad ausgebildeten und auf der Zwischenwelle 20 drehbar angeordneten zweiten Zwischenzahnrad 21 , sowie einem mit dem Gehäuse des Vorderachs-Ausgleichsgetriebes 10 drehfest verbundenen vierten Zahnrad 22. Das als Losrad ausgebildete zweite Zwischenzahnrad 21 lässt sich mittels einer Abkoppeleinrichtung 23 an die Zwischenwelle 20 ankuppeln oder von dieser abkuppeln. The drive of the front-axle differential 10 takes place on the one hand by the internal combustion engine 8 via a starting element 17, which may be formed as a conventional friction clutch, as a conventional torque converter or as an electric machine, the gear 9 and a spur gear set. This Stirnzahnradsatz consists in this embodiment of a rotatably connected to a transmission output shaft 32 first gear 18, a rotatably connected to an intermediate shaft 20 first intermediate gear 19, designed as a loose wheel and rotatably mounted on the intermediate shaft 20 second intermediate gear 21, and one with the housing The idle gear formed second intermediate gear 21 can be coupled by means of a Abkoppeleinrichtung 23 to the intermediate shaft 20 or decouple from this.
Im Vorderachs-Ausgleichsgetriebe 10 sind ein mit einer Radantriebswelle 1 1 für das rechte Vorderrad 3 verbundenes erstes Kegelrad 24, ein mit einer Radantriebswel- le 12 für das linke Vorderrad 4 verbundenes Kegelrad 25 sowie ein erstes und ein zweites Umlaufkegelrad 26, 27 angeordnet. Das am Gehäuse des Ausgleichsgetriebes 10 befestigte Zahnrad 22 kämmt außerdem mit einem fünften Zahnrad 28, welches drehfest mit der Antriebswelle 29 einer elektrischen Maschine 30 verbunden ist. In the front-axle differential 10 are connected to a Radantriebswelle 1 1 for the right front wheel 3 first bevel gear 24, one with a Radantriebswel- le 12 for the left front wheel 4 connected bevel gear 25 and a first and a second bevel gear 26, 27 are arranged. The attached to the housing of the differential gear 10 gear 22 also meshes with a fifth gear 28 which is rotatably connected to the drive shaft 29 of an electric machine 30.
Im geschlossenen Zustand der Abkoppeleinrichtung 23 kann die Brennkraftmaschine 8 die Achse 2 mit den Vorderrädern 3, 4 antreiben, während bei geöffneter Abkoppeleinrichtung 23 dies nicht möglich ist. Bei geöffneter Abkoppeleinrichtung 23 kann ein Antrieb der ersten Achse 2 mit den Vorderrädern 3, 4 daher nur mittels der elektrischen Maschine 30 erfolgen. In diesem Zustand besteht ein geringfügiges Schleppmoment nur noch durch das mit dem Zahnrad 22 am Gehäuse des Vorderachs-Aus- gleichsgetriebes 10 im Eingriff stehenden zweiten Zwischenzahnrad 21 , während das erste Zahnrad 18, das erste Zwischenzahnrad 19 und alle drehbaren Bauteile des Getriebes 9 still stehen und demnach keine Schleppmomente erzeugen. When the uncoupling device 23 is in the closed state, the internal combustion engine 8 can drive the axle 2 with the front wheels 3, 4, whereas with the uncoupling device 23 open, this is not possible. When the decoupling device 23 is open, therefore, a drive of the first axle 2 with the front wheels 3, 4 can take place only by means of the electric machine 30. In this state, there is a slight drag torque only by the second intermediate gear 21 meshing with the gear 22 on the housing of the front-axle differential gear 10, while the first gear 18, the first intermediate gear 19 and all rotatable components of the transmission 9 stand still and therefore produce no drag torque.
Das Getriebe 9, das Vorderachs-Ausgleichsgetriebe 10, die elektrische Maschine 30 und die genannten Zahnräder 18, 19, 21 , 22 und 28 können, wie Fig. 1 zeigt, in einem gemeinsamen Gehäuse 31 angeordnet sein, was zu einer kompakten Bauweise führt. The transmission 9, the front-axle differential 10, the electric machine 30 and the said gears 18, 19, 21, 22 and 28 can, as shown in FIG. 1, be arranged in a common housing 31, resulting in a compact design.
Das in Fig. 1 dargestellte Hybridantriebssystem kann wie in Fig. 2 dargestellt in einem Kraftfahrzeug 1 angeordnet sein, welches zwei angetriebenen Achsen 2, 5 aufweist. Die erste angetriebene Achse 2 stellt die Vorderachse des Kraftfahrzeug 1 dar, und die Brennkraftmaschine 8 sowie das Getriebe 9 mit dem Vorderachs-Ausgleichsgetriebe 10 sind in Front-Quer-Anordnung in das Kraftfahrzeug 1 eingebaut. Die zweite Achse 5, welche die Hinterachse des Kraftfahrzeugs 1 bildet, ist mittels einer elektrischen Maschine 13 antreibbar, welche über ein Hinterachs-Ausgleichsgetriebe 14 auf eine zum linken Hinterrad 6 führende linke Radantriebswelle 15 und auf eine zum rechten Hinterrad 7 führende rechte Radantriebswelle 1 6 wirkt. The hybrid drive system shown in Fig. 1, as shown in Fig. 2 may be arranged in a motor vehicle 1, which has two driven axles 2, 5. The first driven axle 2 represents the front axle of the motor vehicle 1, and the internal combustion engine 8 and the gearbox 9 with the front axle differential 10 are installed in front-transverse arrangement in the motor vehicle 1. The second axis 5, which forms the rear axle of the motor vehicle 1, is drivable by means of an electric machine 13, which via a rear differential gear 14 on a left rear wheel 6 leading left wheel drive shaft 15 and on the right rear wheel 7 leading right wheel drive shaft 1 6th acts.
Es ist auch möglich, die zweite Achse 5 des Kraftfahrzeugs 1 als Vorderachse und die erste Achse 2 als Hinterachse des Kraftfahrzeugs 1 auszubilden, wenn es sich bei dem Kraftfahrzeug 1 beispielsweise um einen Autobus mit Heckmotor handelt. Des Weiteren kann es sich bei dem Kraftfahrzeug 1 auch um einen Gelenkbus, wie er in der DE 10 2008 043 849 A1 dargestellt und beschrieben ist, handeln, wobei die erste Achse 2 dann die letzte Achse eines Hinterwagens des Gelenkbus bildet, während die zweite Achse 5 die Hinterachse des Vorderwagens bildet. Eine entsprechende Anordnung ist auch in Verbindung mit einem mehr als zweiachsigen Kraftfahrzeug ohne Gelenk möglich. It is also possible to design the second axle 5 of the motor vehicle 1 as a front axle and the first axle 2 as a rear axle of the motor vehicle 1, when the motor vehicle 1 is, for example, a bus with a rear engine. Furthermore, the motor vehicle 1 may also be an articulated bus, as shown and described in DE 10 2008 043 849 A1, wherein the first axle 2 then forms the last axle of a rear carriage of the articulated bus, while the second axle 5 forms the rear axle of the front end. A corresponding arrangement is also possible in connection with a more than two-axle motor vehicle without joint.
Das in Fig. 1 dargestellte Hybridantriebssystem kann auch ohne eine elektrisch angetriebene zweite Achse 5 des Kraftfahrzeugs 1 auskommen, während das Hybridantriebssystem gemäß Fig. 3 aus einem verbrennungsmotorischen Antrieb für die erste Achse 2 des Kraftfahrzeugs 1 und der elektromotorisch angetriebenen zweiten Achse 5 des Kraftfahrzeugs 1 gemäß Fig. 2 besteht. In diesem Fall ist, wie aus Fig. 3 ersichtlich, die elektrische Maschine 30 mit ihrer Antriebswelle 29 und dem vierten Zahnrad 28 entfallen, jedoch weiterhin die Abkoppeleinrichtung 23 vorhanden. Daher lässt sich das Kraftfahrzeug 1 entweder über die erste Achse 2 allein mittels der Brennkraftmaschine 8, allein mittels der elektrischen Maschine 13 an der zweiten Achse 5 oder additiv verbrennungsmotorisch und elektrisch antreiben. The hybrid drive system shown in FIG. 1 can also operate without an electrically driven second axle 5 of the motor vehicle 1, while the hybrid drive system according to FIG. 3 consists of an internal combustion engine drive for the first axle 2 of the motor vehicle 1 and the second motor 5 driven by the motor vehicle 1 according to FIG. 2. In this case, as shown in FIG. 3, the electric machine 30 with its drive shaft 29 and the fourth gear 28 omitted, but still the uncoupler 23 is present. Therefore, the motor vehicle 1 either on the first axis 2 alone by means of the internal combustion engine 8, solely by means of the electric machine 13 on the second axis 5 or additive combustion engine and electrically drive.
Beim Antrieb der ersten Achse 2 durch die Brennkraftmaschine 8 allein oder zusammen mittels der elektrischen Maschine 13 an der zweiten Achse 5 ist die Abkoppeleinrichtung 23 geschlossen, während die Abkoppeleinrichtung 23 beim Antrieb des Kraftfahrzeugs 1 ausschließlich durch die elektrische Maschine 13 geöffnet ist. Somit entstehen bei einem Antrieb ausschließlich mittels der elektrischen Maschine 13 praktisch keine Schleppmomente im Getriebe. When driving the first axis 2 by the internal combustion engine 8 alone or together by means of the electric machine 13 on the second axis 5, the Abkoppeleinrichtung 23 is closed, while the uncoupler 23 is open when driving the motor vehicle 1 exclusively by the electric machine 13. Thus arise in a drive exclusively by means of the electric machine 13 virtually no drag torque in the transmission.
Das gleiche gilt für die in Fig. 4 dargestellte Ausführungsform, bei der die Abkoppeleinrichtung 23 zwischen einem ersten Kegelrad 24 des Vorderachs-Ausgleichs- getriebes 10 und der zum rechten Vorderrad 3 führenden Radantriebswelle 1 1 angeordnet ist. Eine zweite, hier nicht dargestellte Abkoppeleinrichtung, kann zwischen dem zweiten Kegelrad 25 des Vorderachs-Ausgleichsgetriebes 10 und der zum linken Vorderrad 4 führenden Radantriebswelle 12 angeordnet sein. Das Vorderachs-Ausgleichsgetriebe 10 ist in bekannter Weise als Kegelradausgleichsgetriebe mit den einem ersten Kegelrad 24 und einem zweiten Kegelrad 25 sowie einem ersten Umlaufkegelrad 26 und einem zweiten Umlaufkegelrad 27 ausgebildet, die in einem gemeinsamen Gehäuse angeordnet sind. Ebenso ist es möglich, das Ausgleichsgetriebe 10, genauso wie das in Fig. 2 dargestellte Ausgleichsgetriebe 14 an der zweiten Achse 5 in bekannter Weise als Stirnradausgleichsgetriebe auszubilden. The same applies to the embodiment shown in FIG. 4, in which the uncoupling device 23 is arranged between a first bevel gear 24 of the front-axle differential gear 10 and the wheel drive shaft 11 leading to the right front wheel 3. A second decoupling device, not shown here, can be arranged between the second bevel gear 25 of the front-axle differential 10 and the wheel drive shaft 12 leading to the left front wheel 4. The front-axle differential 10 is formed in a known manner as a bevel gear with the first bevel gear 24 and a second bevel gear 25 and a first bevel gear 26 and a second bevel gear 27, which are arranged in a common housing. It is also possible to design the differential gear 10, as well as the differential gear 14 shown in FIG. 2 on the second axis 5 in a known manner as Stirnradausgleichsgetriebe.
Da sich die Figuren 1 , 2, 3 und 4 nur hinsichtlich der Anordnung der Abkoppeleinrichtung 23 und der elektrischen Maschine 13, 30 unterscheiden, sind die übereinstimmenden Elemente des Hybridantriebssystems mit gleichen Bezugsziffern bezeichnet. Since Figures 1, 2, 3 and 4 differ only in the arrangement of the uncoupler 23 and the electric machine 13, 30, the matching elements of the hybrid drive system are designated by the same reference numerals.
Die elektrische Maschine 30 ist auf das Vorderachs-Ausgleichsgetriebe 10 und die elektrische Maschine 13 auf das Hinterachs-Ausgleichsgetriebe 14 wirkend dargestellt. Ebenso ist es möglich, jeweils eine elektrische Maschine auf je ein Rad 3, 4, 6, 7 wirkend vorzusehen, in welchem Fall das Hinterachs-Ausgleichsgetriebe 14 an der zweiten Achse 5 der Fig. 2 entfallen kann. The electric machine 30 is shown acting on the front-axle differential 10 and the electric machine 13 acting on the rear-axle differential 14. It is also possible, in each case an electric machine on each wheel 3, 4, 6, 7 acting to provide, in which case the rear axle differential gear 14 on the second axis 5 of FIG. 2 can be omitted.
Bezuqzeichenliste Bezuqzeichenliste
Kraftfahrzeug motor vehicle
Erste Achse, Vorderachse  First axle, front axle
Rechtes Vorderrad  Right front wheel
Linkes Vorderrad  Left front wheel
Zweite Achse, Hinterachse  Second axle, rear axle
Linkes Hinterrad  Left rear wheel
Rechtes Hinterrad  Right rear wheel
Brennkraftmaschine  Internal combustion engine
Getriebe  transmission
Vorderachs-Ausgleichsgetriebe  Front differential
Radantriebswelle zum rechten Vorderrad 3  Radantriebswelle to the right front wheel. 3
Radantriebswelle zum linken Vorderrad 4  Radantriebswelle to the left front wheel. 4
Elektrische Maschine  Electric machine
Hinterachs-Ausgleichsgetriebe  Rear differential
Radantriebswelle zum linken Hinterrad 6  Radantriebswelle to the left rear wheel. 6
Radantriebswelle zum rechten Hinterrad 7  Radantriebswelle to the right rear wheel. 7
Anfahrelement  starting element
Erstes Zahnrad  First gear
Erstes Zwischenzahnrad (zweites Zahnrad)  First intermediate gear (second gear)
Zwischenwelle  intermediate shaft
Zweites Zwischenzahnrad (drittes Zahnrad)  Second intermediate gear (third gear)
Zahnrad am Ausgleichsgetriebe 10 (viertes Zahnrad) Gear on differential 10 (fourth gear)
Abkoppeleinrichtung Abkoppeleinrichtung
Erstes, mit der Radantriebswelle 1 1 verbundenes Kegelrad First, connected to the wheel drive shaft 1 1 bevel gear
Zweites, mit der Radantriebswelle 12 verbundenes KegelradSecond, connected to the wheel drive shaft 12 bevel gear
Erstes Umlaufkegelrad First planetary gear
Zweites Umlaufkegelrad  Second planetary gear
Zahnrad an Antriebswelle 29 (fünftes Zahnrad)  Gear to drive shaft 29 (fifth gear)
Antriebswelle  drive shaft
Elektrische Maschine  Electric machine
Gemeinsames Gehäuse Getriebeausgangswelle Common housing Transmission output shaft

Claims

Patentansprüche claims
1 . Hybridantriebssystem für ein Kraftfahrzeug (1 ), aufweisend eine Brenn kraft- maschine (8), ein stufenloses oder schaltbares Getriebe (9) und zumindest eine elektrische Maschine (13, 30), wobei durch die Brennkraftmaschine (8) über das Getriebe (9) und ein Ausgleichsgetriebe (10) eine erste Achse (2) des Kraftfahrzeugs (1 ) sowie durch die parallel zur Brennkraftmaschine (1 ) angeordnete zumindest eine elektrische Maschine (13, 30) die erste Achse (2) und/oder eine zweite Achse (5) des Kraftfahrzeugs (1 ) antreibbar sind, dadurch gekennzeichnet, dass zumindest zwischen der ersten Achse (2) des Kraftfahrzeugs (1 ) und dem Getriebe (9) wenigstens eine Abkoppeleinrichtung (23) angeordnet ist. 1 . Hybrid drive system for a motor vehicle (1), comprising an internal combustion engine (8), a continuously variable or shiftable transmission (9) and at least one electric machine (13, 30), wherein the engine (8) transmits via the transmission (9) and a differential (10) a first axis (2) of the motor vehicle (1) and by the at least one electric machine (13, 30) arranged parallel to the internal combustion engine (1) the first axis (2) and / or a second axis (5 ) of the motor vehicle (1) are drivable, characterized in that at least one decoupling device (23) is arranged at least between the first axis (2) of the motor vehicle (1) and the transmission (9).
2. Hybridantriebssystem nach Anspruch 1 , dadurch gekennzeichnet, dass die Abkoppeleinrichtung (23) zwischen dem Ausgleichsgetriebe (10) und dem Getriebe (9) angeordnet ist. 2. Hybrid drive system according to claim 1, characterized in that the Abkoppeleinrichtung (23) between the differential (10) and the transmission (9) is arranged.
3. Hybridantriebssystem nach Anspruch 2, dadurch gekennzeichnet, dass die Brennkraftmaschine (8) und das Getriebe (9) für deren Einbau in Front-Quer-Anordnung in das Kraftfahrzeug (1 ) ausgebildet und zusammengebaut sind, dass die Kraftübertragung vom Getriebe (9) zum Ausgleichsgetriebe (10) über einen Stirn radsatz (18, 19, 21 , 22) erfolgt, und dass die Abkoppeleinrichtung (23) an einem Zahnrad (21 ) des Stirn rad- satzes (18, 19, 21 , 22) angeordnet ist. 3. Hybrid drive system according to claim 2, characterized in that the internal combustion engine (8) and the transmission (9) are designed and assembled for their installation in front-transverse arrangement in the motor vehicle (1), that the power transmission from the transmission (9). to the differential (10) via a spur gear set (18, 19, 21, 22) takes place, and that the Abkoppeleinrichtung (23) on a gear (21) of the spur gear set (18, 19, 21, 22) is arranged.
4. Hybridantriebssystem nach Anspruch 3, dadurch gekennzeichnet, dass die Kraftübertragung vom Getriebe (9) zum Ausgleichsgetriebe (10) über einen zweistufigen Stirn radsatz (18, 19, 21 , 22) erfolgt, und dass die Abkoppeleinrichtung (23) an einem Zahnrad (21 ) auf einer Zwischenwelle (20) angeordnet ist. 4. Hybrid drive system according to claim 3, characterized in that the power transmission from the transmission (9) to the differential gear (10) via a two-stage front wheel set (18, 19, 21, 22), and in that the Abkoppeleinrichtung (23) on a gear ( 21) is arranged on an intermediate shaft (20).
5. Hybridantriebssystem nach Anspruch 3 oder 4, dadurch gekennzeichnet, dass die zumindest eine elektrische Maschine (30) in einem gemeinsamen Gehäuse (31 ) mit dem Getriebe (9) und dem Ausgleichsgetriebe (10) angeordnet ist, und dass der Stirnradsatz (18, 19, 21 , 22) von der zumindest einen elektrische Maschine (30) antreibbar ist. 5. Hybrid drive system according to claim 3 or 4, characterized in that the at least one electric machine (30) in a common housing (31) with the gearbox (9) and the differential gear (10) is arranged, and that the spur gear set (18, 19, 21, 22) of the at least one electric machine (30) is drivable.
6. Hybridantriebssystem nach Anspruch 1 , dadurch gekennzeichnet, dass wenigstens eine Abkoppeleinrichtung (23) zwischen einer Radantriebswelle (1 1 ) und einem zugehörigen Zahnrad (24) des Ausgleichsgetriebes (10) angeordnet sowie mit diesen verbunden ist. 6. Hybrid drive system according to claim 1, characterized in that at least one Abkoppeleinrichtung (23) between a wheel drive shaft (1 1) and an associated gear (24) of the differential gear (10) is arranged and connected thereto.
7. Hybridantriebssystem nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass mittels der wenigstens einen elektrischen Maschine (13) die zweite Achse (5) des Kraftfahrzeugs (1 ) antreibbar ist. 7. Hybrid drive system according to one of claims 1 to 6, characterized in that by means of at least one electric machine (13), the second axis (5) of the motor vehicle (1) is drivable.
PCT/EP2013/076828 2013-01-21 2013-12-17 Hybrid drive system for a motor vehicle WO2014111217A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013200826.0 2013-01-21
DE102013200826.0A DE102013200826A1 (en) 2013-01-21 2013-01-21 Hybrid drive system for a motor vehicle

Publications (1)

Publication Number Publication Date
WO2014111217A1 true WO2014111217A1 (en) 2014-07-24

Family

ID=49876586

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2013/076828 WO2014111217A1 (en) 2013-01-21 2013-12-17 Hybrid drive system for a motor vehicle

Country Status (2)

Country Link
DE (1) DE102013200826A1 (en)
WO (1) WO2014111217A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110901358A (en) * 2018-09-17 2020-03-24 舍弗勒技术股份两合公司 Electric bridge driving system and vehicle
WO2021089166A1 (en) * 2019-11-07 2021-05-14 Gkn Automotive Limited Hybrid drive assembly, power train assembly, and method for controlling same
DE102020120375A1 (en) 2020-08-03 2022-02-03 Bayerische Motoren Werke Aktiengesellschaft Motor vehicle drive rear axle

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017101744B4 (en) 2017-01-30 2019-06-19 Gkn Automotive Ltd. Drive arrangement for a motor vehicle
DE102018204570A1 (en) * 2018-03-26 2019-09-26 Magna powertrain gmbh & co kg powertrain

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10319108A1 (en) * 2002-05-17 2003-12-04 Magna Steyr Fahrzeugtechnik Ag All wheel vehicle with hybrid drive has two drive trains and an electrical machine with couplings in one drive train
EP1541400A1 (en) * 2002-09-13 2005-06-15 Honda Giken Kogyo Kabushiki Kaisha Hybrid vehicle
DE102008043849A1 (en) 2008-11-19 2010-05-20 Zf Friedrichshafen Ag Multi-axis hybrid propulsion system for a vehicle
DE102008044038A1 (en) 2008-11-25 2010-05-27 Zf Friedrichshafen Ag Hybrid drive train for hybrid vehicle, has transmission designed as planetary transmission with shafts, which are connected with transmission output, rotor of electrical machine and output of drive train, respectively in torque proof manner
DE102009045972A1 (en) * 2009-10-26 2011-04-28 Zf Friedrichshafen Ag Drive train of a vehicle
US20120077633A1 (en) * 2009-06-05 2012-03-29 Magna Powertrain Of America Inc. Multi-mode hybrid electric transfer case for four-wheel drive vehicle

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010054871A1 (en) * 2010-12-17 2012-06-21 Schaeffler Technologies Gmbh & Co. Kg Powertrain for motor vehicles

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10319108A1 (en) * 2002-05-17 2003-12-04 Magna Steyr Fahrzeugtechnik Ag All wheel vehicle with hybrid drive has two drive trains and an electrical machine with couplings in one drive train
EP1541400A1 (en) * 2002-09-13 2005-06-15 Honda Giken Kogyo Kabushiki Kaisha Hybrid vehicle
DE102008043849A1 (en) 2008-11-19 2010-05-20 Zf Friedrichshafen Ag Multi-axis hybrid propulsion system for a vehicle
DE102008044038A1 (en) 2008-11-25 2010-05-27 Zf Friedrichshafen Ag Hybrid drive train for hybrid vehicle, has transmission designed as planetary transmission with shafts, which are connected with transmission output, rotor of electrical machine and output of drive train, respectively in torque proof manner
US20120077633A1 (en) * 2009-06-05 2012-03-29 Magna Powertrain Of America Inc. Multi-mode hybrid electric transfer case for four-wheel drive vehicle
DE102009045972A1 (en) * 2009-10-26 2011-04-28 Zf Friedrichshafen Ag Drive train of a vehicle

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110901358A (en) * 2018-09-17 2020-03-24 舍弗勒技术股份两合公司 Electric bridge driving system and vehicle
WO2021089166A1 (en) * 2019-11-07 2021-05-14 Gkn Automotive Limited Hybrid drive assembly, power train assembly, and method for controlling same
DE102020120375A1 (en) 2020-08-03 2022-02-03 Bayerische Motoren Werke Aktiengesellschaft Motor vehicle drive rear axle

Also Published As

Publication number Publication date
DE102013200826A1 (en) 2014-07-24

Similar Documents

Publication Publication Date Title
EP2886383B1 (en) Hybrid power train for a motor vehicle
EP3174747B1 (en) Transmission arrangement for a hybrid motor vehicle, and hybrid motor vehicle
WO2015014453A1 (en) Shift gearbox for a drive unit of an electric vehicle, and method for operating the shift gearbox
DE102018206411B4 (en) Drive train for an electrically operated machine
EP2914876A1 (en) Dual clutch device
DE102011113288B4 (en) Automotive powertrain and method for operating a drive train
DE102014106722A1 (en) Automated manual transmission with electric motor-generator
DE102009025094A1 (en) Gear unit utilized as electrical auxiliary unit for multi-speed gearbox of motor vehicle, has input element and multi-speed gearbox including gear branches and common output element
WO2018028747A1 (en) Drive train for a motor vehicle, and method for operating a drive train
EP3529097A1 (en) Drive assembly comprising an electrical machine for a motor vehicle
DE102014210042A1 (en) Transmission assembly and drive unit for a hybrid drive of a vehicle
WO2014111217A1 (en) Hybrid drive system for a motor vehicle
DE112017006070T5 (en) DRIVE UNIT ASSEMBLY
DE102016221059A1 (en) Hybrid powertrain for a hybrid-powered motor vehicle
DE102016221796B4 (en) Hybrid transmission and hybrid powertrain
DE102014203243A1 (en) Arrangement of a transmission and an electric machine for a hybrid drive and hybrid drive
DE102019204299A1 (en) Drive unit for a vehicle and method for operating a drive unit for a vehicle
DE102016100807A1 (en) Hybrid powertrain for a motor vehicle
EP3538390A1 (en) Drive device for a motor vehicle, corresponding motor vehicle, and method for operating a drive device
DE102015208756A1 (en) Transmission device for a hybrid drive system
EP3676119A1 (en) Transmission unit having a manual transmission and electric machine, as well as drive unit
DE102008000132A1 (en) Vehicle drive train has two vehicle axles, internal combustion engine, transmission device for executing different drive transmission ratios and electric machine assigned to internal combustion engines
DE102013214773A1 (en) Hybrid drive unit of a four-wheel drive vehicle
DE102012208678A1 (en) Drive assembly for motor vehicle, has multi-stage transmission that have primary and secondary transmission input shaft and transmission output shaft, where input shaft has clutch for selectively coupling primary drive unit of vehicle
DE102014019431A1 (en) Hybrid drive for a vehicle

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: 13811438

Country of ref document: EP

Kind code of ref document: A1

122 Ep: pct application non-entry in european phase

Ref document number: 13811438

Country of ref document: EP

Kind code of ref document: A1