WO2009056193A2 - Hybrid vehicle having a dual clutch transmission - Google Patents

Hybrid vehicle having a dual clutch transmission Download PDF

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Publication number
WO2009056193A2
WO2009056193A2 PCT/EP2008/007781 EP2008007781W WO2009056193A2 WO 2009056193 A2 WO2009056193 A2 WO 2009056193A2 EP 2008007781 W EP2008007781 W EP 2008007781W WO 2009056193 A2 WO2009056193 A2 WO 2009056193A2
Authority
WO
WIPO (PCT)
Prior art keywords
transmission
clutch
dual
coupled
internal combustion
Prior art date
Application number
PCT/EP2008/007781
Other languages
German (de)
French (fr)
Other versions
WO2009056193A3 (en
Inventor
Andreas HÖSL
Ulrich Ohnemus
Alexander Martin
Original Assignee
Bayerische Motoren Werke 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 Bayerische Motoren Werke Aktiengesellschaft filed Critical Bayerische Motoren Werke Aktiengesellschaft
Priority to CN200880024370A priority Critical patent/CN101743156A/en
Publication of WO2009056193A2 publication Critical patent/WO2009056193A2/en
Publication of WO2009056193A3 publication Critical patent/WO2009056193A3/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W20/00—Control systems specially adapted for hybrid vehicles
    • B60W20/40—Controlling the engagement or disengagement of prime movers, e.g. for transition between prime movers
    • 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
    • B60K6/36—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 transmission gearings
    • 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
    • B60K6/54—Transmission for changing ratio
    • B60K6/547—Transmission for changing ratio the transmission being a stepped gearing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/02—Conjoint control of vehicle sub-units of different type or different function including control of driveline clutches
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/10—Conjoint control of vehicle sub-units of different type or different function including control of change-speed gearings
    • B60W10/11—Stepped gearings
    • B60W10/113—Stepped gearings with two input flow paths, e.g. double clutch transmission selection of one of the torque flow paths by the corresponding input clutch
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W20/00—Control systems specially adapted for hybrid vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2400/00—Special features of vehicle units
    • B60Y2400/42—Clutches or brakes
    • B60Y2400/428—Double clutch arrangements; Dual clutches
    • 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
    • F16H2200/00—Transmissions for multiple ratios
    • F16H2200/003—Transmissions for multiple ratios characterised by the number of forward speeds
    • F16H2200/0056—Transmissions for multiple ratios characterised by the number of forward speeds the gear ratios comprising seven forward speeds
    • 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
    • F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/006—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion power being selectively transmitted by either one of the parallel flow paths
    • 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 present invention relates to a hybrid vehicle with a dual-clutch transmission according to the preamble of claim 1.
  • Hybrid vehicles have an internal combustion engine and at least one electric machine which can be operated as an electric motor and can generate propulsion.
  • So-called "parallel hybrid vehicles” can either be driven purely by internal combustion engine technology, purely by electric motor or internal combustion engine and assisted by an electromotive engine.On purely electric motor drive, the internal combustion engine is usually switched off and started by an electrical machine if required single electrical machine for the electric driving operation electric power for the support of the internal combustion engine are kept, which requires a correspondingly large dimensioning of the electric machine.
  • the electric machine between the engine and the transmission input is arranged for the support of the internal combustion engine Thus, in the normal case, no translation can be used, so that in the electric machine the starting torque required at the crankshaft of the internal combustion engine is maintained must be.
  • the object of the invention is to provide a hybrid vehicle, wherein the internal combustion engine from the purely electric driving out with a comparatively small electrically applied torque can be started.
  • the starting point of the invention is a hybrid vehicle having an internal combustion engine, a dual-clutch transmission and an electric machine coupled or coupleable to a transmission input of the dual-clutch transmission.
  • a dual-clutch transmission is understood to mean a transmission with two partial transmissions, wherein one partial transmission has a first group of gear stages, e.g. odd gears, d. H. the gears 1, 3, 5, etc. are assigned, and the other sub-transmission a second group of gear stages, e.g. even gears d. h, the gear stages 2, 4, 6, etc. are assigned.
  • dual-clutch transmissions have the advantage that time-overlapping switching operations without interruption of traction are possible.
  • the transmission input of the dual-clutch transmission is for this purpose coupled via a first transmission clutch to a transmission input or an input shaft of the first sub-transmission and via a second transmission clutch to a transmission input or an input shaft of the second sub-transmission. If, for example, switched from the first to the second gear, the transmission clutch of a partial transmission is opened overlapping time and thereby designed the first gear while the transmission clutch of the second partial transmission is closed and the second gear engaged. "Outputs" of the two partial transmissions can be coupled or coupled to a common transmission output of the dual-clutch transmission.
  • the electric machine can be coupled or coupled to the transmission input of the dual-clutch transmission.
  • a purely electric driving in which the internal combustion engine is disconnected and switched off, is between the transmission input of the dual clutch gear and the internal combustion engine arranged a separating clutch.
  • working as an electric motor electric machine drives the vehicle either on the gear ratios of the first sub-transmission or on the gear ratios of the second sub-transmission.
  • a starter clutch is therefore provided according to the invention, which is also referred to as “starter clutch”, and which is arranged between the engine and the transmission input of the inactive Examplesszweigs, ie at a Dopplekupplungsgetriebe between the engine and the currently inactive partial transmission ,
  • Figures 1-4 show various hybrid topologies according to the invention.
  • FIG. 1 shows a hybrid concept with an internal combustion engine 1, an electric machine 2 and a dual-clutch transmission 3, which has a first partial transmission 4 and a second partial transmission 5.
  • the first partial transmission 4 for example, the odd gear ratios 1, 3, 5, etc. and the second partial transmission 5, the straight gear ratios 2, 4, 6, etc. be assigned.
  • a crankshaft 6 of the internal combustion engine is connected to a transmission input 9 of the dual-clutch transmission 3 via a separating clutch 7 and a torsional vibration damper 8, which may be a so-called dual-mass flywheel.
  • the transmission input 9 of the dual-clutch transmission 3 in turn, can be coupled via a first clutch 10 and a gear stage 11 to a transmission input 12 of the first partial transmission 4.
  • the transmission input 9 of the dual-clutch transmission via a transmission stage 14 with a transmission input 15 of the second sub-transmission 5 can be coupled.
  • Outputs 16, 17 of the two partial transmissions 4, 5 are coupled to a transmission output 18 or can be coupled to the transmission output 18 of the dual-clutch transmission 3.
  • the hybrid concept shown in Figure 1 furthermore has a starter coupling 19, via which the internal combustion engine 1 can be coupled to the first partial transmission 4.
  • the starter coupling 19 is arranged kinematically parallel to the separating clutch 7.
  • a “safety device” not shown here ensures that the Zustartkupplung 19 can only be closed when the clutch 7 is opened at the same time or is already open, and that the separating clutch 7 can only be closed when the same time the starter coupling 19th is opened or already open.
  • the electric machine 2 can be switched on and feed additional torque into the drive train.
  • the torque delivered by the internal combustion engine 1 and the torque delivered by the electric machine 2 can thus be superimposed on one another.
  • the vehicle can also be driven purely by electric motor or braked regeneratively for recuperation of braking energy.
  • the separating clutch 7 and the starting clutch 19 is opened.
  • the torque delivered by the electric machine 2 passes via the torsional vibration damper 8 to the transmission input 9 of the dual-clutch transmission 3 and from there, depending on the engaged gear, via the first clutch 10 and the first partial transmission 1 to the transmission output shaft 18 or via the second clutch 13 and the second Partial gear 5 to the transmission output shaft 18th
  • a partial torque can be diverted from the torque applied to the transmission output shaft and forwarded via the transmission output 16 of the then "inactive" partial transmission 4 in the direction of the internal combustion engine More specifically, the branched torque flows from the output 16 via the first partial transmission 4, the transmission input 12 of the first partial transmission 4, the transmission stage 11 and the starter clutch, which is closed to the start of the internal combustion engine 1, to the crankshaft 6 of the internal combustion engine 1.
  • Figure 2 shows a variant of the embodiment of Figure 1.
  • the electric machine 2 is arranged coaxially with the crankshaft 6 of the internal combustion engine 1 and thus coaxially with the transmission input 9 of the dual-clutch transmission 3.
  • the torsional vibration damper 8 is arranged here directly between the crankshaft 6 of the internal combustion engine 1 and the "input side" of the separating clutch 7 or the starting clutch 19.
  • Figure 3 shows a variant in which the torsional vibration damper 8 is arranged analogously as in the embodiment of Figure 2.
  • the electric machine 2 is not coaxial with the crankshaft 6 of the engine or coaxial with the transmission input 9 of the dual-clutch transmission 3, but offset parallel thereto.
  • the rotor 20 of the electric machine 2 is coupled via a transmission stage 21 to the transmission input of the dual-clutch transmission.
  • a belt drive could also be provided.
  • Figure 4 shows a variant of the embodiment of Figure 3, wherein in Figure 4, the torsional vibration damper 8 is arranged analogously as in the embodiment of Figure 1 between the clutch 7 and the transmission input 9.

Abstract

Hybrid vehicle, having - an internal combustion engine, - a dual clutch transmission which has a transmission input which can be coupled via a first transmission clutch to a transmission input of a first part transmission of the dual clutch transmission, which first part transmission is assigned odd gear stages, and which can be coupled via a second transmission clutch to a transmission input of a second part transmission of the dual clutch transmission, which second part transmission is assigned even gear stages, wherein outputs of the two part transmissions can be coupled or are coupled to a transmission output of the dual clutch transmission, - a separating clutch which is arranged between the internal combustion engine and the transmission input of the dual clutch transmission, - an electric machine which is coupled or can be coupled to the transmission input of the dual clutch transmission, and - a starter clutch which is arranged between the internal combustion engine and the transmission input of one of the two part transmissions of the dual clutch transmission.

Description

Hybridfahrzeug mit Doppelkupplungsgetriebe Hybrid vehicle with dual-clutch transmission
Die vorliegende Erfindung betrifft ein Hybridfahrzeug mit einem Doppelkupplungsgetriebe gemäß dem Oberbegriff des Patentanspruches 1.The present invention relates to a hybrid vehicle with a dual-clutch transmission according to the preamble of claim 1.
Hybridfahrzeuge weisen einen Verbrennungsmotor und mindestens eine elektrische Maschine auf, die als Elektromotor betreibbar ist und Vortrieb erzeugen kann. So genannte „Parallelhybrid-Fahrzeuge" können wahlweise rein verbrennungsmotorisch angetrieben werden, rein elektromotorisch oder verbrennungsmotorisch und unterstützend elektromotorisch. Bei rein elektromotorischem Antrieb wird der Verbrennungsmotor üblicherweise abgeschaltet und bei Bedarf durch eine elektrische Maschine gestartet. Im rein elektrischen Fahrbetrieb muss bei Konzepten mit nur einer einzigen elektrischen Maschine für den elektrischen Fahrbetrieb elektrische Leistung für den Zustart des Verbrennungsmotors vorgehalten werden, was eine entsprechend große Dimensionierung der elektrischen Maschine erfordert. Bei den meisten bekannten Parallelhybridkonzepten ist die elektrische Maschine zwischen dem Verbrennungsmotor und dem Getriebeeingang angeordnet. Für den Zustart des Verbrennungsmotors kann also im Normalfall keine Übersetzung genutzt werden, so dass in der elektrischen Maschine das an der Kurbelwelle des Verbrennungsmotors benötigte Startmoment vorgehalten werden muss.Hybrid vehicles have an internal combustion engine and at least one electric machine which can be operated as an electric motor and can generate propulsion. So-called "parallel hybrid vehicles" can either be driven purely by internal combustion engine technology, purely by electric motor or internal combustion engine and assisted by an electromotive engine.On purely electric motor drive, the internal combustion engine is usually switched off and started by an electrical machine if required single electrical machine for the electric driving operation electric power for the support of the internal combustion engine are kept, which requires a correspondingly large dimensioning of the electric machine.Most known parallel hybrid concepts, the electric machine between the engine and the transmission input is arranged for the support of the internal combustion engine Thus, in the normal case, no translation can be used, so that in the electric machine the starting torque required at the crankshaft of the internal combustion engine is maintained must be.
Aufgabe der Erfindung ist es, ein Hybridfahrzeug zu schaffen, bei dem der Verbrennungsmotor aus dem rein elektrischen Fahrbetrieb heraus mit einem vergleichsweise geringen elektrisch aufzubringenden Drehmoment gestartet werden kann.The object of the invention is to provide a hybrid vehicle, wherein the internal combustion engine from the purely electric driving out with a comparatively small electrically applied torque can be started.
Diese Aufgabe wird durch die Merkmale des Patentanspruches 1 gelöst. Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung sind den Unteransprüchen zu entnehmen.This object is solved by the features of claim 1. Advantageous embodiments and further developments of the invention can be found in the dependent claims.
Ausgangspunkt der Erfindung ist ein Hybridfahrzeug mit einem Verbrennungsmotor, einem Doppelkupplungsgetriebe und einer mit einem Getriebeeingang des Doppelkupplungsgetriebes gekoppelten bzw. koppelbaren elektrischen Maschine. Unter einem Doppelkupplungsgetriebe wird im Folgenden ein Getriebe mit zwei Teilgetrieben verstanden, wobei dem einen Teilgetriebe eine erste Gruppe von Gangstufen, z.B. ungerade Gangstufen, d. h. die Gänge 1 , 3, 5 etc. zugeordnet sind, und dem anderen Teilgetriebe eine zweite Gruppe von Gangstufen, z.B. gerade Gangstufen d. h, die Gangstufen 2, 4, 6 etc. zugeordnet sind. Gegenüber herkömmlichen Schaltgetrieben haben Doppelkupplungsgetriebe den Vorteil, dass zeitlich überschneidende Schaltvorgänge ohne Zugkraftunterbrechung möglich sind. Der Getriebeeingang des Doppelkupplungsgetriebes ist hierzu über eine erste Getriebekupplung mit einem Getriebeeingang bzw. einer Eingangswelle des ersten Teilgetriebes und über eine zweite Getriebekupplung mit einem Getriebeeingang bzw. einer Eingangswelle des zweiten Teilgetriebes gekoppelt. Wird beispielsweise vom ersten in den zweiten Gang geschaltet, so wird zeitlich überschneidend die Getriebekupplung des einen Teilgetriebes geöffnet und dabei der erste Gang ausgelegt und gleichzeitig wird die Getriebekupplung des zweiten Teilgetriebes geschlossen und der zweite Gang eingelegt. „Ausgänge" der beiden Teilgetriebe sind mit einem gemeinsamen Getriebeausgang des Doppelkupplungsgetriebes koppelbar bzw. gekoppelt.The starting point of the invention is a hybrid vehicle having an internal combustion engine, a dual-clutch transmission and an electric machine coupled or coupleable to a transmission input of the dual-clutch transmission. In the following, a dual-clutch transmission is understood to mean a transmission with two partial transmissions, wherein one partial transmission has a first group of gear stages, e.g. odd gears, d. H. the gears 1, 3, 5, etc. are assigned, and the other sub-transmission a second group of gear stages, e.g. even gears d. h, the gear stages 2, 4, 6, etc. are assigned. Compared with conventional manual transmissions, dual-clutch transmissions have the advantage that time-overlapping switching operations without interruption of traction are possible. The transmission input of the dual-clutch transmission is for this purpose coupled via a first transmission clutch to a transmission input or an input shaft of the first sub-transmission and via a second transmission clutch to a transmission input or an input shaft of the second sub-transmission. If, for example, switched from the first to the second gear, the transmission clutch of a partial transmission is opened overlapping time and thereby designed the first gear while the transmission clutch of the second partial transmission is closed and the second gear engaged. "Outputs" of the two partial transmissions can be coupled or coupled to a common transmission output of the dual-clutch transmission.
Die elektrische Maschine ist mit dem Getriebeeingang des Doppelkupplungsgetriebes gekoppelt bzw. koppelbar. Um ein rein elektrisches Fahren, bei dem der Verbrennungsmotor abgekoppelt und ausgeschaltet ist, zu ermöglichen, ist zwischen dem Getriebeeingang des Doppelkupplungs- getriebes und dem Verbrennungsmotor eine Trennkupplung angeordnet. Im rein elektrischen Fahrbetrieb treibt die dann als Elektromotor arbeitende elektrische Maschine das Fahrzeug wahlweise über die Gangstufen des ersten Teilgetriebes oder über die Gangstufen des zweiten Teilgetriebes an.The electric machine can be coupled or coupled to the transmission input of the dual-clutch transmission. In order to enable a purely electric driving, in which the internal combustion engine is disconnected and switched off, is between the transmission input of the dual clutch gear and the internal combustion engine arranged a separating clutch. In purely electric driving operation then working as an electric motor electric machine drives the vehicle either on the gear ratios of the first sub-transmission or on the gear ratios of the second sub-transmission.
Sowohl im verbrennungsmotorischen als auch im rein elektromotorischen Betrieb ist beim Fahren in einem bestimmten Gang stets nur eines der beiden Teilgetriebe „aktiv" wohingegen das andere der beiden Teilgetriebe inaktiv ist. Der Erfindung liegt die Erkenntnis zugrunde, dass das inaktive Teilgetriebe bzw. ein inaktiver Übersetzungszweig für das Zustarten des Verbrennungsmotors aus dem rein elektrischen Fahrbetrieb heraus sinnvoll genutzt werden kann. Im rein elektrischen Fahrbetrieb fließt das von der elektrischen Maschine erzeugte Drehmoment über eines der beiden Teilgetriebe zum Ausgang des Doppelkupplungsgetriebes und von dort zu den Antriebsrädern des Fahrzeugs. Entsprechend der Übersetzung des jeweils eingelegten Gangs ist das Drehmoment am Ausgang des aktiven Teilgetriebes größer als das von der elektrischen Maschine gelieferte Drehmoment. Von diesem „Ausgangdrehmoment" kann nun ein Teil abgezweigt und durch das „inaktive" Teilgetriebe in Richtung Verbrennungsmotor geleitet werden. Zum Zustarten des Verbrennungsmotors ist daher gemäß der Erfindung eine Zustartkupplung vorgesehen, die im folgenden auch als „Starterkupplung" bezeichnet wird, und die zwischen dem Verbrennungsmotor und dem Getriebeeingang des inaktiven Übersetzungszweigs, also bei einem Dopplekupplungsgetriebe zwischen dem Verbrennungsmotor und dem momentan inaktiven Teilgetriebe angeordnet ist.Both in the internal combustion engine as well as in the purely electromotive operation, only one of the two partial transmissions is always "active" when driving in a certain gear, whereas the other of the two partial transmissions is inactive In purely electrical driving mode, the torque generated by the electrical machine flows via one of the two partial transmissions to the output of the dual-clutch transmission and from there to the drive wheels of the vehicle In each gear engaged, the torque at the output of the active sub-transmission is greater than the torque delivered by the electric machine. "Part of this" output torque "can now be diverted and through the" inactive "sub-transmission in the direction of the internal combustion engine be directed. For starting the internal combustion engine, a starter clutch is therefore provided according to the invention, which is also referred to as "starter clutch", and which is arranged between the engine and the transmission input of the inactive Übersetzungszweigs, ie at a Dopplekupplungsgetriebe between the engine and the currently inactive partial transmission ,
Im Vergleich zu herkömmlichen Hybridkonzepten, bei denen der Verbrennungsmotor unmittelbar, d. h. ohne zwischengeschaltete Übersetzung von der elektrischen Maschine aus dem elektrischen Fahrbetrieb heraus gestartet werden muss, ist hier das benötigte elektrisch erzeugte Drehmoment geringer, so dass die elektrische Maschine relativ klein sein kann. Im Falle eines übersetzungsvariablen inaktiven Übersetzungszweigs wie beim Doppelkupplungsgetriebe ist sogar eine Anpassung der Zustartüber- setzung an die Fahrgeschwindigkeit möglich.In comparison to conventional hybrid concepts, in which the internal combustion engine directly, ie without intermediate translation of the electric machine from the electric drive must be started out, here the required electrically generated torque is lower, so that the electric machine can be relatively small. In the case of a translation variable inactive translation branch as in the dual-clutch transmission, it is even possible to adapt the Zustartüber- set to the driving speed.
Im Folgenden wird die Erfindung im Zusammenhang mit der Zeichnung näher erläutert. Die Figuren 1 - 4 zeigen verschiedene Hybridtopologien gemäß der Erfindung.In the following the invention will be explained in connection with the drawing. Figures 1-4 show various hybrid topologies according to the invention.
Figur 1 zeigt ein Hybridkonzept mit einem Verbrennungsmotor 1 , einer elektrischen Maschine 2 und einem Doppelkupplungsgetriebe 3, das ein erstes Teilgetriebe 4 und ein zweites Teilgetriebe 5 aufweist. Dem ersten Teilgetriebe 4 können beispielsweise die ungeraden Gangstufen 1 , 3, 5 etc. und dem zweiten Teilgetriebe 5 die geraden Gangstufen 2, 4, 6 etc. zugeordnet sein.FIG. 1 shows a hybrid concept with an internal combustion engine 1, an electric machine 2 and a dual-clutch transmission 3, which has a first partial transmission 4 and a second partial transmission 5. The first partial transmission 4, for example, the odd gear ratios 1, 3, 5, etc. and the second partial transmission 5, the straight gear ratios 2, 4, 6, etc. be assigned.
Eine Kurbelwelle 6 des Verbrennungsmotors ist über eine Trennkupplung 7 und einen Torsionsschwingungsdämpfer 8, bei dem es sich um ein so genanntes Zweimassenschwungrad handeln kann, mit einem Getriebeeingang 9 des Doppelkupplungsgetriebes 3 verbunden. Der Getriebeeingang 9 des Doppelkupplungsgetriebes 3 wiederum kann über eine erste Kupplung 10 und eine Zahnradstufe 11 mit einem Getriebeeingang 12 des ersten Teilgetriebes 4 gekoppelt werden.A crankshaft 6 of the internal combustion engine is connected to a transmission input 9 of the dual-clutch transmission 3 via a separating clutch 7 and a torsional vibration damper 8, which may be a so-called dual-mass flywheel. The transmission input 9 of the dual-clutch transmission 3, in turn, can be coupled via a first clutch 10 and a gear stage 11 to a transmission input 12 of the first partial transmission 4.
Über eine zweite Kupplung 13 kann der Getriebeeingang 9 des Doppelkupplungsgetriebes über eine Übersetzungsstufe 14 mit einem Getriebeeingang 15 des zweiten Teilgetriebes 5 gekoppelt werden.Via a second clutch 13, the transmission input 9 of the dual-clutch transmission via a transmission stage 14 with a transmission input 15 of the second sub-transmission 5 can be coupled.
Ausgänge 16, 17 der beiden Teilgetriebe 4, 5 sind mit einem Getriebeausgang 18 gekoppelt oder können mit dem Getriebeausgang 18 des Doppelkupplungsgetriebes 3 gekoppelt werden. Das in Figur 1 gezeigte Hybridkonzept weist femer eine Zustartkupplung 19 auf, über die der Verbrennungsmotor 1 mit dem ersten Teilgetriebe 4 gekoppelt werden kann. Die Zustartkupplung 19 ist kinematisch parallel zur Trennkupplung 7 angeordnet.Outputs 16, 17 of the two partial transmissions 4, 5 are coupled to a transmission output 18 or can be coupled to the transmission output 18 of the dual-clutch transmission 3. The hybrid concept shown in Figure 1 furthermore has a starter coupling 19, via which the internal combustion engine 1 can be coupled to the first partial transmission 4. The starter coupling 19 is arranged kinematically parallel to the separating clutch 7.
Durch eine hier nicht näher dargestellte „Sicherheitseinrichtung" wird sichergestellt, dass die Zustartkupplung 19 nur dann geschlossen werden kann, wenn gleichzeitig die Trennkupplung 7 geöffnet wird oder bereits geöffnet ist, und dass die Trennkupplung 7 nur dann geschlossen werden kann, wenn gleichzeitig die Zustartkupplung 19 geöffnet wird oder bereits geöffnet ist.By a "safety device" not shown here ensures that the Zustartkupplung 19 can only be closed when the clutch 7 is opened at the same time or is already open, and that the separating clutch 7 can only be closed when the same time the starter coupling 19th is opened or already open.
Im Folgenden wird die Funktionsweise des Hybrid konzepts näher erläutert. Im rein verbrennungsmotorischen Betrieb ist die Trennkupplung 7 geschlossen und die Zustartkupplung 19 geöffnet. Das vom Verbrennungsmotor gelieferte Drehmoment gelangt über die Trennkupplung 7 und den Drehschwingungsdämpfer 8 zum Getriebeeingang 9 des Doppelkupplungsgetriebes 3. Je nach dem, welcher Gang gerade eingelegt ist, ist entweder die erste Kupplung 10 oder die zweite Kupplung 13 geschlossen. Dementsprechend fließt das Drehmoment vom Getriebeeingang 9 des Doppelkupplungsgetriebes 3 über die erste Kupplung 10 und das erste Teilgetriebe zum Getriebeausgang 18 oder über die zweite Kupplung 13 und das zweite Teilgetriebe 5 zum Getriebeausgang 18.The following section explains how the hybrid concept works. In pure internal combustion engine operation, the clutch 7 is closed and the starter clutch 19 is opened. The torque delivered by the engine passes through the clutch 7 and the torsional vibration damper 8 to the transmission input 9 of the dual clutch transmission 3. Depending on which gear is currently engaged, either the first clutch 10 or the second clutch 13 is closed. Accordingly, the torque flows from the transmission input 9 of the dual-clutch transmission 3 via the first clutch 10 and the first partial transmission to the transmission output 18 or via the second clutch 13 and the second partial transmission 5 to the transmission output 18.
Unterstützend zum Verbrennungsmotor 1 kann die elektrische Maschine 2 zugeschaltet werden und zusätzliches Drehmoment in den Antriebsstrang einspeisen. Das vom Verbrennungsmotor 1 gelieferte Drehmoment und das von der elektrischen Maschine 2 gelieferte Drehmoment können also einander überlagert werden.Supporting the internal combustion engine 1, the electric machine 2 can be switched on and feed additional torque into the drive train. The torque delivered by the internal combustion engine 1 and the torque delivered by the electric machine 2 can thus be superimposed on one another.
Alternativ zu rein verbrennungsmotorischem Antrieb und kombiniertem Antrieb kann das Fahrzeug auch rein elektromotorisch angetrieben bzw. zur Rekuperation von Bremsenergie generatorisch gebremst werden. Bei rein elektromotorischem Fahrbetrieb ist die Trennkupplung 7 und die Anfahrkupplung 19 geöffnet. Das von der elektrischen Maschine 2 gelieferte Drehmoment gelangt über den Drehschwingungsdämpfer 8 zum Getriebeeingang 9 des Doppelkupplungsgetriebes 3 und von dort, je nach eingelegtem Gang, über die erste Kupplung 10 und das erste Teilgetriebe 1 zur Getriebeausgangswelle 18 oder über die zweite Kupplung 13 und das zweite Teilgetriebe 5 zur Getriebeausgangswelle 18.As an alternative to purely internal combustion engine drive and combined drive, the vehicle can also be driven purely by electric motor or braked regeneratively for recuperation of braking energy. At purely electromotive driving operation, the separating clutch 7 and the starting clutch 19 is opened. The torque delivered by the electric machine 2 passes via the torsional vibration damper 8 to the transmission input 9 of the dual-clutch transmission 3 and from there, depending on the engaged gear, via the first clutch 10 and the first partial transmission 1 to the transmission output shaft 18 or via the second clutch 13 and the second Partial gear 5 to the transmission output shaft 18th
Wird das Fahrzeug im rein elektrischen Fahrbetrieb mit einem der Gänge des zweiten Teilgetriebes 5 angetrieben, so kann von dem an der Getriebeausgangswelle anliegenden Drehmoment ein Teilmoment abgezweigt werden und über den Getriebeausgang 16 des dann „inaktiven" Teilgetriebes 4 nach vorne in Richtung des Verbrennungsmotors geleitet werden. Genauer gesagt fließt das abgezweigte Drehmoment vom Ausgang 16 über das erste Teilgetriebe 4, den Getriebeeingang 12 des ersten Teilgetriebes 4, die Übersetzungsstufe 11 und die Starterkupplung, die zum Zustarten des Verbrennungsmotors 1 geschlossen wird, zur Kurbelwelle 6 des Verbrennungsmotors 1. Ein ganz wesentlicher Gesichtspunkt hierbei ist, dass das von der Getriebeausgangswelle 18 des Doppelkupplungsgetriebes 3 abgezweigte Drehmoment entsprechend dem Übersetzungsverhältnis des im Teilgetriebe 4 eingelegten Ganges verstärkt wird, so dass zum Zustarten des Verbrennungsmotors lediglich ein entsprechend reduziertes Drehmoment von der Getriebeausgangswelle 18 abgezweigt werden muss. Für das Zustarten des Verbrennungsmotors muss in der elektrischen Maschine somit ein wesentlich geringeres elektrisches Zusatzdrehmoment vorgehalten werden, als bei herkömmlichen Hybridkonzepten, bei denen der Zustart des Verbrennungsmotors ohne zusätzliche Übersetzung erfolgt.If the vehicle is driven in the purely electric driving operation with one of the gears of the second partial transmission 5, a partial torque can be diverted from the torque applied to the transmission output shaft and forwarded via the transmission output 16 of the then "inactive" partial transmission 4 in the direction of the internal combustion engine More specifically, the branched torque flows from the output 16 via the first partial transmission 4, the transmission input 12 of the first partial transmission 4, the transmission stage 11 and the starter clutch, which is closed to the start of the internal combustion engine 1, to the crankshaft 6 of the internal combustion engine 1. A very essential The point here is that the branched off from the transmission output shaft 18 of the dual clutch transmission 3 torque is amplified according to the ratio of the engaged in the transmission part 4 gear, so that the states of the internal combustion engine only a correspondingly reduced torque of the Transmission output shaft 18 must be diverted. For the states of the internal combustion engine, a considerably lower additional electrical torque must thus be maintained in the electric machine than in conventional hybrid concepts in which the engine is started without additional gear ratio.
Figur 2 zeigt eine Variante des Ausführungsbeispiels der Figur 1. Analog dem Ausführungsbeispiel der Figur 1 ist die elektrische Maschine 2 koaxial zur Kurbelwelle 6 des Verbrennungsmotors 1 und somit koaxial zum Getriebeeingang 9 des Doppelkupplungsgetriebes 3 angeordnet. Im Unter- schied zum Ausführungsbeispiel der Figur 1 ist der Torsionsschwingungs- dämpfer 8 hier unmittelbar zwischen der Kurbelwelle 6 des Verbrennungsmotors 1 und der „Eingangsseite" der Trennkupplung 7 bzw. der Zu- startkupplung 19 angeordnet.Figure 2 shows a variant of the embodiment of Figure 1. Analogously to the embodiment of Figure 1, the electric machine 2 is arranged coaxially with the crankshaft 6 of the internal combustion engine 1 and thus coaxially with the transmission input 9 of the dual-clutch transmission 3. In the sub In contrast to the exemplary embodiment of FIG. 1, the torsional vibration damper 8 is arranged here directly between the crankshaft 6 of the internal combustion engine 1 and the "input side" of the separating clutch 7 or the starting clutch 19.
Figur 3 zeigt eine Variante, bei der der Drehschwingungsdämpfer 8 analog angeordnet ist wie beim Ausführungsbeispiel der Figur 2. Im Unterschied zu den Ausführungsbeispielen der Figuren 1 und 2 ist hier jedoch die elektrische Maschine 2 nicht koaxial zur Kurbelwelle 6 des Verbrennungsmotors bzw. koaxial zum Getriebeeingang 9 des Doppelkupplungsgetriebes 3 angeordnet, sondern parallel versetzt dazu. Der Rotor 20 der elektrischen Maschine 2 ist über eine Übersetzungsstufe 21 mit dem Getriebeeingang des Doppelkupplungsgetriebes gekoppelt. Alternativ zur der Übersetzungsstufe 21 könnte auch ein Riementrieb vorgesehen sein.Figure 3 shows a variant in which the torsional vibration damper 8 is arranged analogously as in the embodiment of Figure 2. In contrast to the embodiments of Figures 1 and 2, however, the electric machine 2 is not coaxial with the crankshaft 6 of the engine or coaxial with the transmission input 9 of the dual-clutch transmission 3, but offset parallel thereto. The rotor 20 of the electric machine 2 is coupled via a transmission stage 21 to the transmission input of the dual-clutch transmission. As an alternative to the translation stage 21, a belt drive could also be provided.
Figur 4 zeigt eine Variante des Ausführungsbeispiels der Figur 3, wobei in Figur 4 der Torsionsschwingungsdämpfer 8 analog wie beim Ausführungsbeispiel der Figur 1 zwischen der Trennkupplung 7 und dem Getriebeeingang 9 angeordnet ist. Figure 4 shows a variant of the embodiment of Figure 3, wherein in Figure 4, the torsional vibration damper 8 is arranged analogously as in the embodiment of Figure 1 between the clutch 7 and the transmission input 9.

Claims

Patentansprüche claims
1. Hybridfahrzeug, mit einem Verbrennungsmotor (1 ) , einem Getriebe (3), insbesondere einem Doppelkupplungsgetriebe, das einen Getriebeeingang (9) aufweist, der über eine erste Getriebekupplung (10) mit einem Getriebeeingang (12) eines ersten Übersetzungszweigs, insbesondere einem ersten Teilgetriebes (4) des Doppelkupplungsgetriebes (3) koppelbar ist, und der über eine zweite Getriebekupplung (13) mit einem Getriebeeingang (15) eines zweiten Übersetzungszweigs, insbesondere einem zweiten Teilgetriebes (5) des Doppelkupplungsgetriebes koppelbar ist, wobei Ausgänge (16, 17) der beiden Teilgetriebe (4, 5) mit einem Getriebeausgang (18) des Getriebes (3) koppelbar bzw. gekoppelt sind, einer Trennkupplung (7), die zwischen dem Verbrennungsmotor (1 ) und dem Getriebeeingang (9) des Getriebes (3) angeordnet ist, einer elektrischen Maschine (2), die mit dem Getriebeeingang (9) des Getriebes (3) gekoppelt bzw. koppelbar ist, und einer Zustartkupplung (19) die zwischen dem Verbrennungsmotor (1 ) und dem Getriebeeingang (12) eines der beiden Übersetzungszweige oder beider Übersetzungszweige angeordnet ist.1. Hybrid vehicle, with an internal combustion engine (1), a transmission (3), in particular a dual-clutch transmission having a transmission input (9) via a first transmission clutch (10) with a transmission input (12) of a first transmission branch, in particular a first Partial gear (4) of the dual-clutch transmission (3) can be coupled, and via a second transmission clutch (13) with a transmission input (15) of a second transmission branch, in particular a second partial transmission (5) of the dual-clutch transmission can be coupled, said outputs (16, 17) the two partial transmissions (4, 5) with a transmission output (18) of the transmission (3) are coupled or coupled, a separating clutch (7) arranged between the internal combustion engine (1) and the transmission input (9) of the transmission (3) is, an electric machine (2) which is coupled or coupled to the transmission input (9) of the transmission (3), and a starter coupling (19) between the Verbrennungsmot or (1) and the transmission input (12) of one of the two translation branches or both translation branches is arranged.
2. Hybridfahrzeug nach Anspruch 1 , dadurch gekennzeichnet, dass eine Einrichtung vorgesehen ist, welche sicherstellt, dass2. Hybrid vehicle according to claim 1, characterized in that a device is provided, which ensures that
- die Zustartkupplung (19) nur dann geschlossen werden kann, wenn gleichzeitig die Trennkupplung (7) geöffnet wird oder bereits geöffnet ist, bzw. dass- The auxiliary coupling (19) can only be closed when the release clutch (7) is opened at the same time or is already open, or that
- die Trennkupplung (7) nur dann geschlossen werden kann, wenn gleichzeitig die Zustartkupplung (19) geöffnet wird oder bereits geöffnet ist. - The separating clutch (7) can only be closed when at the same time the starter coupling (19) is opened or already open.
3. Hybridfahrzeug nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Zustartkupplung (19) kinematisch parallel zur Trennkupplung (7) angeordnet ist.3. Hybrid vehicle according to claim 1 or 2, characterized in that the Zustartkupplung (19) is arranged kinematically parallel to the separating clutch (7).
4. Hybridfahrzeug nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass zwischen dem Verbrennungsmotor (1 ) einerseits und der Trennkupplung (7) und der Zustartkupplung (19) andererseits ein Drehschwingungsdämpfer (8) angeordnet ist.4. Hybrid vehicle according to one of claims 1 to 3, characterized in that between the internal combustion engine (1) on the one hand and the separating clutch (7) and the starter coupling (19) on the other hand, a torsional vibration damper (8) is arranged.
5. Hybridfahrzeug nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass zwischen der Trennkupplung (7) und dem Getriebeeingang (9) des Doppelkupplungsgetriebes (3) ein Drehschwingungsdämpfer angeordnet ist.5. Hybrid vehicle according to one of claims 1 to 3, characterized in that between the separating clutch (7) and the transmission input (9) of the dual-clutch transmission (3), a torsional vibration damper is arranged.
6. Hybridfahrzeug nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die elektrische Maschine (2) koaxial zu einer Kurbelwelle (6) des Verbrennungsmotors und koaxial zum Eingang (9) des Doppelkupplungsgetriebes (3) angeordnet ist.6. Hybrid vehicle according to one of claims 1 to 5, characterized in that the electric machine (2) is arranged coaxially to a crankshaft (6) of the internal combustion engine and coaxial with the input (9) of the dual-clutch transmission (3).
7. Hybridfahrzeug nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die elektrische Maschine (2) parallel zu einer Kurbelwelle (6) des Verbrennungsmotors 1 und parallel zum Getriebeeingang (9) des Doppelkupplungsgetriebes (3) angeordnet ist und über eine Übersetzungsstufe (21 ) mit dem Getriebeeingang (9) des Doppelkupplungsgetriebes (3) koppelbar bzw. gekoppelt ist. 7. Hybrid vehicle according to one of claims 1 to 5, characterized in that the electric machine (2) is arranged parallel to a crankshaft (6) of the internal combustion engine 1 and parallel to the transmission input (9) of the dual-clutch transmission (3) and via a transmission stage ( 21) can be coupled or coupled to the transmission input (9) of the dual-clutch transmission (3).
PCT/EP2008/007781 2007-10-31 2008-09-18 Hybrid vehicle having a dual clutch transmission WO2009056193A2 (en)

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