WO2010105652A1 - Drivetrain for a hybrid vehicle - Google Patents

Drivetrain for a hybrid vehicle Download PDF

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Publication number
WO2010105652A1
WO2010105652A1 PCT/EP2009/009165 EP2009009165W WO2010105652A1 WO 2010105652 A1 WO2010105652 A1 WO 2010105652A1 EP 2009009165 W EP2009009165 W EP 2009009165W WO 2010105652 A1 WO2010105652 A1 WO 2010105652A1
Authority
WO
WIPO (PCT)
Prior art keywords
electric machine
internal combustion
input shaft
combustion engine
shaft
Prior art date
Application number
PCT/EP2009/009165
Other languages
German (de)
French (fr)
Inventor
Dieter Kraxner
Original Assignee
Dr. Ing. H.C. F. Porsche Aktiengesellschaft
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 Dr. Ing. H.C. F. Porsche Aktiengesellschaft filed Critical Dr. Ing. H.C. F. Porsche Aktiengesellschaft
Publication of WO2010105652A1 publication Critical patent/WO2010105652A1/en

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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
    • B60K6/26—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 motors or the generators
    • 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
    • B60K6/40—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 assembly or relative disposition of components
    • 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
    • B60K6/42—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
    • B60K2006/4825—Electric machine connected or connectable to gearbox input shaft
    • 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
    • B60K2006/4833—Step up or reduction gearing driving generator, e.g. to operate generator in most efficient speed range
    • 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
    • F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
    • F16H37/02—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings
    • F16H37/06—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts
    • F16H37/08—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing
    • F16H37/0833—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing with arrangements for dividing torque between two or more intermediate shafts, i.e. with two or more internal power paths
    • F16H37/084—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing with arrangements for dividing torque between two or more intermediate shafts, i.e. with two or more internal power paths at least one power path being a continuously variable transmission, i.e. CVT
    • F16H2037/088—Power split variators with summing differentials, with the input of the CVT connected or connectable to the input 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 drive train for a hybrid vehicle according to the preamble of claim 1.
  • hybrid vehicles are called motor vehicles, which have at least two different Antnebsmogzieren, in particular via an internal combustion engine and an electric motor.
  • hybrid vehicles are known in various forms, for example as a serial hybrid, as a parallel hybrid or as a power-split hybrid.
  • Emwellen parallel hybrid a powertrain for a hybrid vehicle in the present form is known as Emwellen parallel hybrid.
  • a single-shaft parallel hybrid comprises an internal combustion engine and an electric machine arranged on a common shaft and connectable to a transmission of the hybrid vehicle to drive the hybrid vehicle.
  • the crankshaft of the internal combustion engine, the drive shaft of the electric machine and the transmission input shaft (or an input shaft of a dual-clutch transmission) are thus designed as a single, common shaft.
  • a separating clutch is provided on the common shaft. When this disconnect clutch is closed, both the internal combustion engine and the electric machine are rotatably connected to the same transmission input shaft.
  • both the engine and the electric machine can introduce power into the transmission to drive the hybrid vehicle.
  • the electric machine can be operated as a generator, with which the internal combustion engine drives both the hybrid vehicle and generates electricity by the rotation of the electric machine. This stream can then be stored in an accumulator in the hybrid vehicle. If the disconnect clutch is open, then only the drive shaft is the Electric machine rotatably connected to the transmission input shaft. In this case, a purely electric driving of the hybrid vehicle by the operation of the electric machine as a motor is possible if the accumulator has sufficient energy, and the internal combustion engine can be switched off. Alternatively, a recuperation is possible, wherein the kinetic energy of the hybrid vehicle is transmitted via the rotating transmission input shaft to the electric machine operated as a generator.
  • the electric machine can be used as a starter for the shutdown internal combustion engine by the separating clutch is switched to a slipping state.
  • a suitable electric machine has a power of at least 25 kW, the transmission is expediently provided as an automatic transmission and find as a rechargeable battery in particular lithium-ion or nickel Metallhyd ⁇ t accumulators with about 300 volts voltage use.
  • the rotor of the electric machine with the turn ⁇ eiteitigen components of the separating clutch connected by the rotor is thus connected to the clutch disc or the flexplate of the separating clutch, electric machine and separating clutch as a structural Unit, a so-called hybrid module, be executed.
  • the object of the invention is to propose a single-shaft parallel Hybnd, which does not have the disadvantages mentioned.
  • the drive shaft of the electric machine is arranged non-coaxially with the transmission input shaft, with propellant means being provided for coupling between the drive shaft and the transmission input shaft.
  • propellant means being provided for coupling between the drive shaft and the transmission input shaft.
  • the propellants it is particularly preferred to configure the propellants so that a stable, i. non-switchable, coupling between the drive shaft of the electric machine and a get ⁇ ebe Schondelable, coupling between the drive shaft of the electric machine and a get ⁇ ebe Schondelable, coupling between the drive shaft of the electric machine and a get ⁇ ebe Schondelable, coupling between the drive shaft of the electric machine and a get ⁇ ebe Schondelus part of the separating clutch is realized.
  • the clutch disc or the flexplate is designed such that it is suitable for transmitting torque to the electric machine by means of the non-coaxial drive shaft. This results in a certain degree of integration of electric machine and separating clutch with a relatively simple structure.
  • the propellant a toothed portion of the turntable part of the separating clutch and a gear on the drive shaft of the
  • clutch disk or flexplate may be surrounded by a gearwheel.
  • This gearwheel meshes with the gearwheel arranged on the drive shaft of the electric machine, for coupling between the electric machine and the transmission input shaft.
  • the drive shaft of the electric machine and the transmission input shaft are arranged approximately parallel.
  • the propellants comprise a drive belt and at least one pulley Also hereby a secure transmission of torque between the drive shaft of the electric machine and the transmission input shaft can be realized
  • propellants are possible, such as a chain drive
  • electric machines with improved energy efficiency or efficiency can now also be used become.
  • electric machines can now be relatively easily provided whose length is not smaller than their diameter
  • electric machines with a diameter of about 160 mm By using, for example, electric machines with a diameter of about 160 mm, a good compromise between energy efficiency and sufficient moment is ensured
  • Such electric machines are in the specified space of a single-shaft Parallel Hyb ⁇ d practically only non-coaxial can be arranged
  • the electric machine is arranged in the starter space of the internal combustion engine.
  • this allows use of such hybrid vehicle powertrain internal combustion engines previously used for non-hybrid vehicles. Since the single-shaft parallel Hyb ⁇ d no separate starter motor is more necessary, but its function can be taken over by the electric machine, the corresponding starter space is now free In this space, the electric machine is now arranged and coupled by the propellant, to display a single-shaft parallel -Hyb ⁇ ds.
  • FIGURE shows a particularly preferred embodiment of the invention.
  • Shown is a drive train for a hybrid vehicle comprising a - not shown - internal combustion engine, which is rotatably connected via a crankshaft 1 with a transmission input shaft 2 of a transmission 3 connectable.
  • the transmission 3 is designed here as a double clutch transmission.
  • the crankshaft 1 is separable via a Tre ⁇ nkupplung 5 of the transmission input shaft 2.
  • an electric machine 4 which can be connected to the transmission input shaft 2 via propellant.
  • the electric machine 4 in this case has a drive shaft (not shown), which runs parallel to the drive shaft 2, but is arranged next to it, that is to say it is non-mounted. coaxial.
  • the propellant for the rotationally fixed connection of the drive shaft of the electric machine 4 with the transmission input shaft 2 are covered by a housing 5.
  • the housing 5 has adjacent to the electric machine 4 on a bulge 6, which covers a gear.
  • This - not shown - gear is mounted on the drive shaft of the electric machine 4
  • the gear meshes with an intermediate gear 8, which in turn is in engagement with a gear 7.
  • the gear 7 is supported by the flexplate of the disconnect clutch 5, ie the turntable-side part of the disconnect clutch 5.

Abstract

The invention relates to a drivetrain for a hybrid vehicle comprising an internal combustion engine, an electrical machine, and a gearbox, the crankshaft of the internal combustion engine and the driveshaft of the electrical machine being able to be rotationally fixedly connected to the same gearbox input shaft, in that a separating clutch is disposed between the internal combustion engine and the electrical machine, by means of which torque from the internal combustion engine and/or electrical machine can be selectively fed into the gearbox, characterized in that the driveshaft of the electrical machine (4) is disposed non-coaxially to the transmission input shaft (2), wherein driving means (6, 7, 8) are provided for coupling between the driveshaft and the gearbox input shaft.

Description

Antriebsstrang für ein Hybridfahrzeug Powertrain for a hybrid vehicle
Die Erfindung betrifft einen Antriebsstrang für ein Hybridfahrzeug nach dem Oberbegriff des Anspruchs 1.The invention relates to a drive train for a hybrid vehicle according to the preamble of claim 1.
Als Hybridfahrzeuge werden Kraftfahrzeuge bezeichnet, die über wenigstens zwei verschiedene Antnebsmoglichkeiten verfugen, insbesondere über einen Verbrennungsmotor und einen Elektromotor. Derartige Hybridfahrzeuge sind in verschiedenen Ausprägungen bekannt, beispielsweise als serieller Hybrid, als paralleler Hybrid oder als leistungsverzweigter Hybrid.As hybrid vehicles are called motor vehicles, which have at least two different Antnebsmoglichkeiten, in particular via an internal combustion engine and an electric motor. Such hybrid vehicles are known in various forms, for example as a serial hybrid, as a parallel hybrid or as a power-split hybrid.
Aus der gattungsbildenden DE 10 2006 034 937 Al ist ein Antriebsstrang für ein Hybridfahrzeug in der vorliegenden Ausprägung als Emwellen-Parallel-Hybrid bekannt. Em derartiger Einwellen-Parallel-Hybπd umfasst einen Verbrennungsmotor und eine Elektromaschine, die auf einer gemeinsamen Welle angeordnet und mit einem Getriebe des Hybridfahrzeuges verbindbar sind um das Hybridfahrzeug anzutreiben. Die Kurbelwelle des Verbrennungsmotors, die Antriebswelle der Elektromaschine und die Getriebeeingangswelle (bzw. eine Eingangswelle eines Doppelkupplungsgetriebes) sind damit als eine einzige, gemeinsame Welle ausgeführt. Zwischen dem Verbrennungsmotor und der Elektromaschine ist eine Trennkupplung auf der gemeinsamen Welle vorgesehen. Wenn diese Trennkupplung geschlossen ist, sind sowohl der Verbrennungsmotor als auch die Elektromaschine mit derselben Getriebeeingangswelle drehfest verbunden. Somit können sowohl der Verbrennungsmotor als auch die Elektromaschine Leistung in das Getriebe einleiten, zum Antrieb des Hybridfahrzeuges. Alternativ kann die Elektromaschine als Generator betrieben werden, womit der Verbrennungsmotor sowohl das Hybridfahrzeug antreibt als auch durch die Rotation der Elektromaschine Strom erzeugt. Dieser Strom kann dann in einem Akkumulator im Hybridfahrzeug gespeichert werden. Wenn die Trennkupplung geöffnet ist, dann ist nur die Antriebswelle der Elektromaschine drehfest mit der Getriebeeingangswelle verbunden. In diesem Fall ist ein rein elektrisches Fahren des Hybridfahrzeuges durch den Betrieb der Elektromaschine als Motor möglich, wenn der Akkumulator ausreichend Energie aufweist, und der Verbrennungsmotor kann abgeschaltet werden. Alternativ ist eine Rekuperation möglich, wobei die kinetische Energie des Hybridfahrzeuges über die rotierende Getriebeeingangswelle auf die als Generator betriebene Elektromaschine übertragen wird. Weiterhin kann die Elektromaschine als Anlasser für den abgeschalteten Verbrennungsmotor genutzt werden, indem die Trennkupplung in einen schlupfenden Zustand geschaltet wird. Eine geeignete Elektromaschine weist dabei eine Leistung von mindestens 25 kW auf, das Getriebe ist zweckmaßigerweise als Automatikgetriebe vorgesehen und als Akkumulator finden insbesondere Lithium-Ionen- oder Nickel- Metallhydπt-Akkumulatoren mit etwa 300 Volt Spannung Verwendung.From the generic DE 10 2006 034 937 Al a powertrain for a hybrid vehicle in the present form is known as Emwellen parallel hybrid. Such a single-shaft parallel hybrid comprises an internal combustion engine and an electric machine arranged on a common shaft and connectable to a transmission of the hybrid vehicle to drive the hybrid vehicle. The crankshaft of the internal combustion engine, the drive shaft of the electric machine and the transmission input shaft (or an input shaft of a dual-clutch transmission) are thus designed as a single, common shaft. Between the internal combustion engine and the electric machine, a separating clutch is provided on the common shaft. When this disconnect clutch is closed, both the internal combustion engine and the electric machine are rotatably connected to the same transmission input shaft. Thus, both the engine and the electric machine can introduce power into the transmission to drive the hybrid vehicle. Alternatively, the electric machine can be operated as a generator, with which the internal combustion engine drives both the hybrid vehicle and generates electricity by the rotation of the electric machine. This stream can then be stored in an accumulator in the hybrid vehicle. If the disconnect clutch is open, then only the drive shaft is the Electric machine rotatably connected to the transmission input shaft. In this case, a purely electric driving of the hybrid vehicle by the operation of the electric machine as a motor is possible if the accumulator has sufficient energy, and the internal combustion engine can be switched off. Alternatively, a recuperation is possible, wherein the kinetic energy of the hybrid vehicle is transmitted via the rotating transmission input shaft to the electric machine operated as a generator. Furthermore, the electric machine can be used as a starter for the shutdown internal combustion engine by the separating clutch is switched to a slipping state. A suitable electric machine has a power of at least 25 kW, the transmission is expediently provided as an automatic transmission and find as a rechargeable battery in particular lithium-ion or nickel Metallhydπt accumulators with about 300 volts voltage use.
Um den für einen derartigen Einwellen-Parallel-Hybnd benotigten Bauraum zu minimieren, ist üblicherweise der Rotor der Elektromaschine mit den getπebeseitigen Komponenten der Trennkupplung verbunden Indem der Rotor also an die Kupplungsscheibe bzw den Flexplate der Trennkupplung angebunden ist, können Elektromaschine und Trennkupplung als eine bauliche Einheit, ein sog. Hybridmodul, ausgeführt werden.In order to minimize the space required for such a single-shaft parallel Hybnd, usually the rotor of the electric machine with the turnπeiteitigen components of the separating clutch connected by the rotor is thus connected to the clutch disc or the flexplate of the separating clutch, electric machine and separating clutch as a structural Unit, a so-called hybrid module, be executed.
Nachteilig hieran ist jedoch, dass dann die Dimensionierung der Elektromaschine abhangig von der Dimensionierung der Trennkupplung ist. Insbesondere werden dabei, entsprechend der Breite der Trennkupplung, eher kurze Elektromaschinen mit großem Durchmesser verwendet, was bezüglich Energieeffizienz nicht optimal ist.The disadvantage of this, however, is that then the dimensions of the electric machine is dependent on the dimensions of the separating clutch. In particular, according to the width of the separating clutch, rather short electrical machines are used with a large diameter, which is not optimal in terms of energy efficiency.
Die Aufgabe der Erfindung besteht darin, einen Einwellen-Parallel-Hybnd vorzuschlagen, welcher die genannten Nachteile nicht aufweist.The object of the invention is to propose a single-shaft parallel Hybnd, which does not have the disadvantages mentioned.
Die Aufgabe wird gelost durch die Merkmale des Anspruchs 1. Die Unteranspruche betreffen vorteilhafte Aus- und Weiterbildungen der Erfindung. Erfindungsgemaß ist vorgesehen, dass die Antriebswelle der Elektromaschine nicht- koaxial zur Getriebeeingangswelle angeordnet ist, wobei Treibmittel vorgesehen sind zur Kopplung zwischen Antriebswelle und Getriebeeingangswelle. Anders ausgedruckt wird die Elektromaschine bei diesem speziellen Einwellen-Parallel-Hybπd räumlich von der Getriebeeingangswelle beabstandet Wahrend also weiterhin die Kurbelwelle des Verbrennungsmotors und die Getriebeeingangswelle (bzw. eine Eingangswelle eines Doppelkupplungsgetriebes) auf einer gemeinsamen Welle d h. koaxial angeordnet sind, ist nun keine koaxiale Anordnung dieser gemeinsamen Welle mit der Antriebswelle der Elektromaschine mehr vorgesehen Vielmehr hegt diese Antriebswelle, und damit natürlich auch die Elektromaschine, nunmehr quasi „neben" der gemeinsamen Welle bzw. der Getriebeeingangswelle Damit sind neue Bauraume für die Elektromaschine erschließbar Insbesondere ist eine größere Flexibilität bei der Gestaltung der Elektromaschine des Hybridfahrzeuges möglich, weil die Lange der Elektromaschine nicht mehr abhangig ist von der Große der Trennkupplung. Dennoch ist durch die Treibmittel weiterhin eine sichere Einleitung von Moment möglich, entweder durch die Elektromaschine in das Getriebe um das Hybridfahrzeug anzutreiben, oder über die rotierende Getriebeeingangswelle auf die die Elektromaschine um kinetische Energie des Hybridfahrzeuges zu rekupeπeren.The object is achieved by the features of claim 1. The dependent claims relate to advantageous embodiments and further developments of the invention. According to the invention, it is provided that the drive shaft of the electric machine is arranged non-coaxially with the transmission input shaft, with propellant means being provided for coupling between the drive shaft and the transmission input shaft. Expressed differently, the electric machine in this particular single-shaft parallel Hybπd spaced spatially from the transmission input shaft While thus still the crankshaft of the engine and the transmission input shaft (or an input shaft of a dual-clutch transmission) on a common shaft d h. Coaxially arranged, no coaxial arrangement of this common shaft with the drive shaft of the electric machine is now provided more Rather, this drive shaft, and thus of course the electric machine, now virtually "next to" the common shaft or the transmission input shaft This is new space for the electric machine In particular, a greater flexibility in the design of the electric machine of the hybrid vehicle is possible because the length of the electric machine is no longer dependent on the size of the separating clutch.However, the propellant continues to allow a safe introduction of torque, either by the electric machine in the transmission to drive the hybrid vehicle, or via the rotating transmission input shaft to the electric machine to rekupeπeren kinetic energy of the hybrid vehicle.
Besonders bevorzugt ist vorgesehen, die Treibmittel derart zu konfigurieren, dass eine standige, d.h. nicht-schaltbare, Kopplung zwischen der Antriebswelle der Elektromaschine und einem getπebeseitigen Teil der Trennkupplung realisiert wird. Dazu wird beispielsweise die Kupplungsscheibe oder das Flexplate derart ausgebildet, dass es zur Übertragung von Moment zur Elektromaschine vermittels der nicht-koaxialen Antriebswelle geeignet ist. Damit ergibt sich ein gewisses Maß an Integration von Elektromaschine und Trennkupplung bei einem relativ einfachen Aufbau.It is particularly preferred to configure the propellants so that a stable, i. non-switchable, coupling between the drive shaft of the electric machine and a getπebeseitigen part of the separating clutch is realized. For this purpose, for example, the clutch disc or the flexplate is designed such that it is suitable for transmitting torque to the electric machine by means of the non-coaxial drive shaft. This results in a certain degree of integration of electric machine and separating clutch with a relatively simple structure.
Insbesondere ist auch vorgesehen, dass die Treibmittel einen gezahnten Bereich des getπebeseitigen Teils der Trennkupplung sowie ein Zahnrad auf der Antriebswelle der Elektromaschine umfassen Beispielsweise kann Kupplungsscheibe bzw Flexplate von einem Zahnrad umgeben sein Dieses Zahnrad kämmt mit dem auf der Antriebswelle der Elektromaschine angeordneten Zahnrad, zur Kopplung zwischen der Elektromaschine und der Getriebeeingangswelle. In diesem Fall sind die Antriebswelle der Elektromaschine und die Getriebeeingangswelle naherungsweise parallel angeordnet.In particular, it is also provided that the propellant a toothed portion of the turntable part of the separating clutch and a gear on the drive shaft of the For example, clutch disk or flexplate may be surrounded by a gearwheel. This gearwheel meshes with the gearwheel arranged on the drive shaft of the electric machine, for coupling between the electric machine and the transmission input shaft. In this case, the drive shaft of the electric machine and the transmission input shaft are arranged approximately parallel.
Dabei kann auch vorgesehen sein, zwischen dem Zahnrad auf der Antriebswelle der Elektromaschine und dem gezahnten Bereich ein Zwischenzahnrad anzuordnen Dies ermöglicht beim Treibmittel die Darstellung eines größeren Abstands zwischen Antriebswelle und Getriebeeingangswelle Zusätzlich ergibt sich durch die Verwendung von Zahnrad bzw. gezahntem Bereich die Einstellung einer gewünschten Übersetzung zwischen der Drehzahl der Elektromaschine und der Drehzahl der Getriebeeingangswelle Damit wird auch ein Einsatz hochdrehender Elektromaschinen bei einem Einwellen- Parallel-Hybπd möglich, was bei direkter Kopplung des Rotors einer solchen Elektromaschine mit der Getriebeeingangswelle nicht darstellbar wäreIn this case, it is also possible to arrange an intermediate gear between the gearwheel on the drive shaft of the electric machine and the toothed area. This allows the propellant to display a greater distance between the drive shaft and the transmission input shaft. In addition, the setting of a desired gearbox results from the use of gearwheel or toothed area Translation between the speed of the electric machine and the speed of the transmission input shaft Thus, a use of high-speed electric machines in a single-shaft parallel Hybπd possible, which would not be represented with direct coupling of the rotor of such an electric machine with the transmission input shaft
In einer alternativen Ausfuhrungsform der Erfindung umfassen die Treibmittel einen Treibriemen und wenigstens eine Riemenscheibe Auch hiermit ist eine sichere Übertragung von Moment zwischen der Antriebswelle der Elektromaschine und der Getriebeeingangswelle realisierbar Natürlich sind auch andere Treibmittel möglich, beispielsweise ein KettentriebIn an alternative embodiment of the invention, the propellants comprise a drive belt and at least one pulley Also hereby a secure transmission of torque between the drive shaft of the electric machine and the transmission input shaft can be realized Of course, other propellants are possible, such as a chain drive
Zum Schutz der Treibmittel vor Umwelteinflüssen ist bevorzugt deren Kapselung vorgesehen. Durch ein Gehäuse zur Abdeckung der Treibmittel, welches beispielsweise an der Elektromaschine und der Getriebeeingangswelle anliegt, ist ein sicherer Schutz der Treibmittel vor Verschmutzung bzw Beschädigung gewährleistetTo protect the blowing agent from environmental influences whose encapsulation is preferably provided. By a housing for covering the propellant, which rests for example on the electric machine and the transmission input shaft, a secure protection of the propellant against contamination or damage is ensured
Durch die nicht-koaxiale Anordnung der Elektromaschine können nun auch Elektromaschinen mit verbesserter Energieeffizienz bzw. Wirkungsgrad eingesetzt werden. Insbesondere können nun relativ einfach Elektromaschinen vorgesehen werden, deren Lange nicht kleiner als ihr Durchmesser ist Indem hier beispielsweise Elektromaschinen mit einem Durchmesser von etwa 160 mm verwendet werden, ist ein guter Kompromiss zwischen Energieeffizienz und ausreichendem Moment sichergestellt Derartige Elektromaschinen sind im vorgegebenem Bauraum eines Einwellen-Parallel- Hybπd praktisch nur nicht-koaxial anordenbarDue to the non-coaxial arrangement of the electric machine, electric machines with improved energy efficiency or efficiency can now also be used become. In particular, electric machines can now be relatively easily provided whose length is not smaller than their diameter By using, for example, electric machines with a diameter of about 160 mm, a good compromise between energy efficiency and sufficient moment is ensured Such electric machines are in the specified space of a single-shaft Parallel Hybπd practically only non-coaxial can be arranged
Bevorzugt wird die Elektromaschine im Anlasserbauraum des Verbrennungsmotors angeordnet. Dies ermöglicht insbesondere eine Verwendung von solchen Verbrennungsmotoren für den Hybridfahrzeug-Antriebsstrang, die bisher für Nicht- Hybπdfahrzeuge verwendet wurden. Da beim Einwellen-Parallel-Hybπd kein separater Anlassermotor mehr notwendig ist, sondern dessen Funktion durch die Elektromaschine übernommen werden kann, ist der entsprechende Anlasserbauraum nun frei In diesem Bauraum wird nun die Elektromaschine angeordnet und durch die Treibmittel angekoppelt, zur Darstellung eines Einwellen-Parallel-Hybπds.Preferably, the electric machine is arranged in the starter space of the internal combustion engine. In particular, this allows use of such hybrid vehicle powertrain internal combustion engines previously used for non-hybrid vehicles. Since the single-shaft parallel Hybπd no separate starter motor is more necessary, but its function can be taken over by the electric machine, the corresponding starter space is now free In this space, the electric machine is now arranged and coupled by the propellant, to display a single-shaft parallel -Hybπds.
Die Erfindung wird nun anhand einer Zeichnung naher dargestellt. Dabei zeigt die einzige Fig eine besonders bevorzugte Ausfuhrungsform der Erfindung.The invention will now be described in more detail with reference to a drawing. The single FIGURE shows a particularly preferred embodiment of the invention.
Dargestellt ist ein Antriebsstrang für ein Hybridfahrzeug umfassend einen - nicht dargestellten - Verbrennungsmotor, der über eine Kurbelwelle 1 drehfest mit einer Getriebeeingangswelle 2 eines Getriebes 3 verbindbar ist. Das Getriebe 3 ist hier als Doppelkupplungsgetriebe ausgebildet. Die Kurbelwelle 1 ist über eine Treπnkupplung 5 von der Getriebeeingangswelle 2 trennbar.Shown is a drive train for a hybrid vehicle comprising a - not shown - internal combustion engine, which is rotatably connected via a crankshaft 1 with a transmission input shaft 2 of a transmission 3 connectable. The transmission 3 is designed here as a double clutch transmission. The crankshaft 1 is separable via a Treπnkupplung 5 of the transmission input shaft 2.
Zusätzlich zum nicht dargestellten Verbrennungsmotor ist eine Elektromaschine 4 vorgesehen, die über Treibmittel an die Getriebeeingangswelle 2 anbindbar ist. Die Elektromaschine 4 weist dabei eine - nicht dargestellte - Antriebswelle auf, die parallel zur Getπebeemgangswelle 2 verlauft, jedoch daneben hegend angeordnet ist, d.h nicht- koaxial. Die Treibmittel zur drehfesten Verbindung der Antriebswelle der Elektromaschine 4 mit der Getriebeeingangswelle 2 sind dabei durch ein Gehäuse 5 abgedeckt. Das Gehäuse 5 weist benachbart zur Elektromaschine 4 eine Ausbuchtung 6 auf, welche ein Zahnrad abdeckt. Dieses - nicht dargestellte - Zahnrad ist auf der Antriebswelle der Elektromaschine 4 befestigt Das Zahnrad kämmt mit einem Zwischenzahnrad 8, welches wiederum im Eingriff mit einem Zahnrad 7 steht. Das Zahnrad 7 wird von der Flexplate der Trennkupplung 5 getragen, d.h. dem getπebeseitigen Teil der Trennkupplung 5.In addition to the internal combustion engine, not shown, an electric machine 4 is provided which can be connected to the transmission input shaft 2 via propellant. The electric machine 4 in this case has a drive shaft (not shown), which runs parallel to the drive shaft 2, but is arranged next to it, that is to say it is non-mounted. coaxial. The propellant for the rotationally fixed connection of the drive shaft of the electric machine 4 with the transmission input shaft 2 are covered by a housing 5. The housing 5 has adjacent to the electric machine 4 on a bulge 6, which covers a gear. This - not shown - gear is mounted on the drive shaft of the electric machine 4 The gear meshes with an intermediate gear 8, which in turn is in engagement with a gear 7. The gear 7 is supported by the flexplate of the disconnect clutch 5, ie the turntable-side part of the disconnect clutch 5.
Somit ist eine drehfeste Verbindung zwischen der Getriebeeingangswelle 2 und der Antriebswelle der Elektromaschine 4 durch die Treibmittel hergestellt, welche gebildet werden durch das Zahnrad auf der Antriebswelle der Elektromaschine 4, das Zwischenzahnrad 8 und das Zahnrad 7. Unabhängig davon, ob die Trennkupplung 5 geöffnet oder geschlossen ist, besteht vermittels der Treibmittel standig eine drehfeste Verbindung zwischen Elektromaschine 4 und Getriebeeingangswelle 2 Es ergibt sich somit ein Einwellen-Parallel-Hybπd, bei dem die Elektromaschine 4 nicht-koaxial zur Getπebeeingangswelle 2 sowie zur Kurbelwelle 1 angeordnet ist. Thus, a rotationally fixed connection between the transmission input shaft 2 and the drive shaft of the electric machine 4 is made by the propellant, which are formed by the gear on the drive shaft of the electric machine 4, the intermediate gear 8 and the gear 7. Regardless of whether the clutch 5 is open or is closed, by means of the propellant constantly a rotationally fixed connection between the electric machine 4 and the transmission input shaft 2 Thus, there is a single-shaft parallel Hybπd, in which the electric machine 4 is arranged non-coaxial with Getπebeeingangswelle 2 and the crankshaft 1.

Claims

Patentansprüche claims
1 Antriebsstrang für ein Hybridfahrzeug umfassend einen Verbrennungsmotor, eine Elektromaschine und ein Getriebe, wobei die Kurbelwelle des Verbrennungsmotors und die Antriebswelle der Elektromaschine drehfest mit derselben Getriebeeingangswelle verbindbar sind indem zwischen Verbrennungsmotor und Elektromaschine eine Trennkupplung angeordnet ist womit wahlweise von Verbrennungsmotor und/oder Elektromaschine Moment in das Getriebe einleitbar ist, dadurch gekennzeichnet, dass die Antriebswelle der Elektromaschine (4) nicht-koaxial zur Getriebeeingangswelle (2) angeordnet ist, wobei Treibmittel (6, 7, 8) vorgesehen sind zur Kopplung zwischen Antriebswelle und Getriebeeingangswelle.1 powertrain for a hybrid vehicle comprising an internal combustion engine, an electric machine and a transmission, wherein the crankshaft of the internal combustion engine and the drive shaft of the electric machine rotatably connected to the same transmission input shaft are arranged by a separating clutch between the engine and electric machine which optionally by internal combustion engine and / or electric machine in the transmission can be introduced, characterized in that the drive shaft of the electric machine (4) non-coaxial with the transmission input shaft (2) is arranged, wherein blowing means (6, 7, 8) are provided for coupling between the drive shaft and the transmission input shaft.
2. Antriebsstrang nach Anspruch 1 , wobei die Treibmittel konfiguriert sind zur Kopplung zwischen Antriebswelle und getπebeseitigem Teil der Trennkupplung (5)2. Drive train according to claim 1, wherein the propellants are configured for coupling between the drive shaft and the turntable-side part of the disconnect clutch (5).
3 Antriebsstrang nach Anspruch 2, wobei die Treibmittel einen gezahnten Bereich (7) des getπebeseitigen Teils der Trennkupplung und ein Zahnrad (6) auf der Antriebswelle der Elektromaschine umfassen.A power train according to claim 2, wherein the propellant means comprise a toothed portion (7) of the turntable-side portion of the disconnect clutch and a gear (6) on the drive shaft of the electric machine.
4. Antriebsstrang nach Anspruch 3, wobei ein Zwischenzahnrad (8) zwischen dem gezahnten Bereich und dem Zahnrad angeordnet ist, welches mit beiden kämmt4. A drive train according to claim 3, wherein an intermediate gear (8) is arranged between the toothed portion and the gear, which meshes with both
5 Antriebsstrang nach Anspruch 1 oder 2, wobei die Treibmittel Treibriemen und Riemenscheibe umfassen.Drive train according to claim 1 or 2, wherein the propellant drive belt and pulley comprise.
6. Antriebsstrang nach einem der Ansprüche 1 bis 5, wobei ein Gehäuse (5) für die Kapselung der Treibmittel vorgesehen ist. 6. Drive train according to one of claims 1 to 5, wherein a housing (5) is provided for the encapsulation of the propellant.
7. Antriebsstrang nach einem der vorhergehenden Ansprüche, wobei die Länge der Elektromaschine nicht kleiner als deren Durchmesser ausgebildet ist.7. Drive train according to one of the preceding claims, wherein the length of the electric machine is not smaller than the diameter thereof is formed.
8. Antriebsstrang nach einem der vorhergehenden Ansprüche, wobei die Elektromaschine im Bauraum des Anlassermotors des Verbrennungsmotors vorgesehen ist. 8. Drive train according to one of the preceding claims, wherein the electric machine is provided in the space of the starter motor of the internal combustion engine.
PCT/EP2009/009165 2009-03-19 2009-12-19 Drivetrain for a hybrid vehicle WO2010105652A1 (en)

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