WO2020070881A1 - ハイブリッド車両 - Google Patents

ハイブリッド車両

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Publication number
WO2020070881A1
WO2020070881A1 PCT/JP2018/037400 JP2018037400W WO2020070881A1 WO 2020070881 A1 WO2020070881 A1 WO 2020070881A1 JP 2018037400 W JP2018037400 W JP 2018037400W WO 2020070881 A1 WO2020070881 A1 WO 2020070881A1
Authority
WO
WIPO (PCT)
Prior art keywords
gear
hybrid vehicle
internal combustion
combustion engine
input
Prior art date
Application number
PCT/JP2018/037400
Other languages
English (en)
French (fr)
Inventor
月▲崎▼　敦史
Original Assignee
日産自動車株式会社
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 日産自動車株式会社 filed Critical 日産自動車株式会社
Priority to EP18936018.3A priority Critical patent/EP3862206B1/en
Priority to JP2020551055A priority patent/JP7004081B2/ja
Priority to PCT/JP2018/037400 priority patent/WO2020070881A1/ja
Priority to CN201880098197.3A priority patent/CN112789187A/zh
Priority to US17/273,746 priority patent/US20210323534A1/en
Publication of WO2020070881A1 publication Critical patent/WO2020070881A1/ja

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    • 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
    • B60W20/20—Control strategies involving selection of hybrid configuration, e.g. selection between series or parallel configuration
    • 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
    • B60K6/44—Series-parallel type
    • B60K6/442—Series-parallel switching 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
    • B60K6/22—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
    • B60K6/24—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 combustion engines
    • 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
    • B60K6/36—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
    • B60K6/22—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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/042—Guidance of lubricant
    • F16H57/0427—Guidance of lubricant on rotary parts, e.g. using baffles for collecting lubricant by centrifugal force
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/042—Guidance of lubricant
    • F16H57/043—Guidance of lubricant within rotary parts, e.g. axial channels or radial openings in shafts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/045—Lubricant storage reservoirs, e.g. reservoirs in addition to a gear sump for collecting lubricant in the upper part of a gear case
    • F16H57/0452—Oil pans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0457—Splash lubrication
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0467—Elements of gearings to be lubricated, cooled or heated
    • F16H57/0469—Bearings or seals
    • F16H57/0471—Bearing
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/90—Vehicles comprising electric prime movers
    • B60Y2200/92—Hybrid vehicles
    • 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.
  • Patent Document 1 discloses a hybrid vehicle capable of running by switching between a series system and a parallel system.
  • a transmission device for realizing the parallel system is installed between the internal combustion engine and the drive wheels.
  • the transmission device includes an input gear connected to the internal combustion engine, an output gear connected to the drive wheels, an intermediate gear connected between the input gear and the output gear, and a clutch for connecting and disconnecting a driving force transmission path between the internal combustion engine and the input gear.
  • An object of the present invention is to provide a hybrid vehicle that can improve lubricity of an input gear.
  • the rotation center of the intermediate gear is viewed from the axial direction. Therefore, it is located vertically below a straight line connecting the rotation center of the input gear and the rotation center of the output gear.
  • the lubricating oil scooped up by the intermediate gear can be supplied to the input gear, the lubricity of the input gear can be improved.
  • FIG. 2 is a schematic diagram illustrating a drive system of the hybrid vehicle according to the first embodiment.
  • FIG. 3 is a schematic diagram of the case 13 of the first embodiment as viewed from the axial direction of the drive shaft 5. It is a cross-sectional view of the input shaft 1b.
  • FIG. 1 is a schematic diagram illustrating a drive system of the hybrid vehicle according to the first embodiment.
  • the hybrid vehicle according to the first embodiment includes an internal combustion engine (engine) 1, a generator motor (generator) 2, a traveling motor (electric motor) 3, a transmission device 4, a drive shaft 5, and drive wheels 6.
  • the crankshaft 1a of the internal combustion engine 1 is connected to the input shaft 1b.
  • the input shaft 1b is connected to the motor shaft 2a of the power generation motor 2 via the power generation motor gear train 7.
  • the power generation motor gear train 7 has three gears 7a, 7b, 7c.
  • the first gear 7a rotates integrally with the input shaft 1b.
  • the third gear 7c rotates integrally with the motor shaft 2a.
  • the second gear 7b meshes with the first gear 7a and the third gear 7c, respectively.
  • the motor shaft 3a of the traveling motor 3 is connected to a traveling motor reduction mechanism 9 via a motor traveling clutch 8.
  • the traveling motor reduction mechanism 9 includes a traveling motor gear train 9a and a traveling motor final reduction gear 9b.
  • the running motor gear train 9a has two gears 9a1 and 9a2 that mesh with each other.
  • the first gear 9a1 is connected to one of the fastening elements of the motor running clutch 8.
  • the other of the fastening elements is connected to the motor shaft 3a.
  • the second gear 9a2 is connected to the traveling motor final reduction gear 9b by a rotating shaft 9c.
  • the traveling motor final reduction gear 9b meshes with a ring gear (output gear) 10a of a differential 10 in the transmission device 4.
  • the motor traveling clutch 8 permits the relative rotation between the motor shaft 3a and the first gear 9a1 when released, and restricts the relative rotation between the motor shaft 3a and the first gear 9a1 when engaged.
  • the transmission device 4 includes an internal combustion engine traveling clutch (disconnection / disconnection device) 11 and an internal combustion engine traveling gear set 12 in addition to the differential 10 described above.
  • the internal combustion engine running clutch 11 allows the relative rotation between the input shaft 1b and the internal combustion engine running gear set 12 (the first gear 12a1) by releasing, and the input shaft 1b and the internal combustion engine running gear set 12 Regulate the relative rotation of.
  • the internal combustion engine traveling gear set 12 includes an internal combustion engine traveling gear train 12a and an internal combustion engine final reduction gear 12b.
  • the internal combustion engine running gear train 12a has two gears 12a1 and 12a2 that mesh with each other.
  • the first gear (input gear) 12a1 is connected to one of the fastening elements of the clutch 11 for running the internal combustion engine.
  • the other of the fastening elements is connected to the input shaft 1b.
  • the second gear 12a2 is connected to the internal combustion engine final reduction gear 12b by a rotating shaft 12c.
  • the internal combustion engine final reduction gear 12b meshes with the ring gear 10a.
  • the differential 10 has a differential case 10b having an operating mechanism (not shown) inside in addition to the ring gear 10a.
  • the left and right side gears of the operating mechanism are connected to the left and right drive shafts 5.
  • the left and right drive shafts 5 are connected to drive wheels 6.
  • the hybrid vehicle according to the first embodiment uses only the traveling motor 3 as a traveling power source by disengaging the internal combustion engine traveling clutch 11 while engaging the motor traveling clutch 8 and driving the internal combustion engine 1 for power generation. Runs in the series hybrid mode, which is used as a power source for the car. In addition, by disengaging the motor drive clutch 8 and engaging the internal combustion engine drive clutch 11, the vehicle runs in the internal combustion engine direct connection mode using only the internal combustion engine 1 as the power source for driving. By engaging both clutches 8 and 11 together, traveling in the parallel hybrid mode is also possible.
  • FIG. 2 is a schematic view of the case 13 according to the first embodiment as viewed from the axial direction of the drive shaft 5.
  • FIG. 3 illustrates the meshing pitch circle of each gear.
  • the upper part of the paper of FIG. 3 corresponds to the upper part of the vertical direction
  • the left of the paper corresponds to the left of the vehicle longitudinal direction.
  • a power generation motor gear train 7 and a running motor reduction mechanism 9 are housed. I have.
  • the ring gear 10a of the differential 10, the second gear 12a2 and the final reduction gear 12b of the internal combustion engine running gear set 12, and the second gear 7b and the third gear 7c of the power generation motor gear train 7 are arranged at the bottom of the case 13. Have been.
  • the lowermost ends of the gears 10a, 12a2, 12b, 7b, 7c are located below the oil level OL of the oil (hereinafter, lubricating oil) stored in the lowermost part of the case 13.
  • the oil level OL is set to a height at which substantially lower half of each gear 10a, 12a2, 12b, 7b, 7c is always immersed.
  • the gears 9a1, 9a2, 9b of the traveling motor reduction mechanism 9 are arranged at a position above the ring gear 10a.
  • the first gear 9a1 is arranged at a position higher than the second gear 9a2 and the traveling motor final reduction gear 9b.
  • the first gear 12a1 of the internal combustion engine running gear set 12 and the first gear 7a of the power generation motor gear train 7 are the second gear 7b of the power generation motor gear train 7, the second gear 12a2 of the internal combustion engine running gear set 12, and the internal combustion engine. It is arranged above the engine final reduction gear 12b.
  • the lowermost ends of the gears 12a1 and 7a are located above the oil level OL, and are not immersed in the lubricating oil.
  • the rotation center O2 of the second gear 12a2 and the final reduction gear 12b of the internal combustion engine is defined by a straight line L1 connecting the rotation center O1 of the first gear 12a1 and the rotation center O3 of the ring gear 10a. Is also located below.
  • the arrows described inside the pitch circles of the gears indicate the rotation direction when the vehicle is moving forward.
  • the second gear 12a2 and the final reduction gear 12b of the internal combustion engine are gears having the same number of teeth connected by the rotating shaft 12c, they can be regarded as one intermediate gear 14.
  • the intermediate gear 14 rotates clockwise in FIG. That is, the intermediate gear 14 rotates in a direction in which the teeth 14a of the intermediate gear 14 that have passed the lubricating oil stored in the case 13 mesh with the teeth 16 of the first gear 12a1 before the teeth 15 of the ring gear 10a.
  • An oil reservoir 17 is provided on the left side wall 13a of the case 13.
  • the oil reservoir 17 has a concave shape protruding from the left side wall 13a to the inside of the case 13 and opening upward.
  • the oil sump 17 can store the lubricating oil scooped up by the intermediate gear.
  • the oil reservoir 17 has an opening 17a at its lowermost end.
  • An oil path 18 is provided below the oil reservoir 17 on the left side wall 13a.
  • the oil passage 18 is a ridge projecting from the left side wall 13a to the inside of the case 13, and the lubricating oil dropped from the opening 17a is guided through the oil passage 18 to the tip of the input shaft 1b.
  • FIG. 3 is a cross-sectional view of the input shaft 1b.
  • a bearing portion 19 is provided on the left side wall 13a of the case 13.
  • a ball bearing 20 is attached to the bearing 19.
  • the ball bearing 20 rotatably supports the tip of the input shaft 1b.
  • a concave portion 19a that opens upward is provided at a position facing the distal end surface of the input shaft 1b.
  • Lubricating oil flowing along the oil passage 18 is introduced into the recess 19a.
  • the input shaft 1b has a shaft center lubricating oil passage 21 and a plurality of radial oil passages 22 therein.
  • the shaft core lubricating oil passage 21 extends from the tip of the input shaft 1b in a direction along the rotation axis of the input shaft 1b.
  • the shaft core lubricating oil passage 21 communicates with the recess 19a.
  • the radial oil passage 22 extends radially with respect to the rotation axis of the input shaft 1b, and communicates the shaft lubrication oil passage 21 with the outer peripheral surface of the input shaft 1b.
  • the lubricating oil that has dropped into the recess 19a through the oil passage 18 is supplied to the axial lubricating oil passage 21 and passes through the radial oil passage 22 by centrifugal force to lubricate the first gear 7a and the first gear 12a1. To be served.
  • the hybrid vehicle according to the first embodiment has an internal combustion engine traveling clutch 11 that can connect and disconnect the input path of the driving force from the input shaft 1b to the first gear 12a1.
  • the clutch 11 for running the internal combustion engine is disengaged, so that a point (branch 12 for running the internal combustion engine) that branches off from the path for transmitting the driving force to the motor 2 for power generation (the motor gear train 7 for power generation) is used.
  • Gears that mesh with the load can be reduced. That is, since the rotation of the drive wheels 6 is transmitted to the internal combustion engine traveling gear set 12, the load is not unloaded. As a result, it is possible to suppress the generation of rattling noise due to the torque fluctuation of the internal combustion engine 1.
  • the internal combustion engine 1 has a large volume, and the vertical position of the crankshaft 1a tends to be relatively higher than the drive shaft 5 and the like. Therefore, in the case 13 of the transmission device 4, the first gear 12a1 of the internal combustion engine traveling gear set 12 to which the driving force from the internal combustion engine 1 is input is also located at a relatively higher position than the ring gear 10a and the like. Provided. In the series hybrid mode, the first gear 12a1 continues to idle (rotates with the drive wheel 6), but the first gear 12a1 is at a relatively high position, and the oil level OL of the lubricating oil stored in the case 13 Supply of lubricating oil is an issue.
  • the rotation center O2 of the intermediate gear 14 (the second gear 12a2, the final reduction gear 12b of the internal combustion engine) is the first gear 12a1.
  • the rotation center O1 of the ring gear 10a is located below a straight line L1 connecting the rotation center O1 of the ring gear 10a and the rotation center O3 of the ring gear 10a.
  • a part of the lubricating oil scooped up above the oil level OL by the intermediate gear 14 scatters to the first gear 12a1, and the lubricating oil can be supplied to the first gear 12a1, so that the lubricity of the first gear 12a1 is improved. Can be improved.
  • the lowermost end of the intermediate gear 14 is located lower than the lowermost end of the first gear 12a1.
  • the volume of the intermediate gear 14 that contacts the lubricating oil stored in the case 13 increases, so that the amount of the lubricating oil that is scraped up increases, and the lubricity of the first gear 12a1 can be further improved.
  • the first gear 12a1 is lubricated only by the lubricating oil scooped up by the intermediate gear. That is, since a pump for pumping lubricating oil to the first gear 12a1 is not required, power loss due to the operation of the pump can be prevented.
  • the intermediate gear 14 rotates in a direction in which the teeth 14a of the intermediate gear 14 that has passed through the lubricating oil stored in the case 13 mesh with the teeth 16 of the first gear 12a1 before the teeth 15 of the ring gear 10a.
  • the lubricating oil scraped up above the oil level OL by the intermediate gear 14 directly scatters to the first gear 12a1, Since a large amount of lubricating oil can be supplied to the gear 12a1, the lubricity of the first gear 12a1 can be further improved.
  • an oil reservoir 17, an oil path 18, a concave portion 19a, a shaft center lubricating oil path 21 and a plurality of radial oil paths 22 are provided.
  • a portion of the lubricating oil that has not adhered to the first gear 12a1 can be used for lubricating the first gear 12a1.
  • the utilization efficiency of the lubricating oil scooped up by the intermediate gear 14 can be increased.
  • the lubricity of the first gear 12a1 can be further improved.
  • the lowermost end of the first gear 12a1 is located above the oil level OL of the lubricating oil stored in the case 13.
  • the power transmission efficiency from being deteriorated due to the stirring of the lubricating oil by the first gear 12a1.
  • heat generation due to lubricating oil stirring can be suppressed, and an excessive rise in temperature can be suppressed.
  • the embodiments for carrying out the present invention have been described based on the embodiments.
  • the specific configuration of the present invention is not limited to the embodiments, and the design changes may be made without departing from the scope of the invention.
  • the present invention is also included in the present invention.
  • the oil level OL of the lubricating oil stored in the case 13 may be at a height at which at least a part of the intermediate gear 14 is immersed.

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Abstract

ドライブシャフト（5）の回転軸線方向から見たとき、中間ギヤ（14）（第２ギヤ（12a2）、内燃機関最終減速ギヤ（12b））の回転中心（O2）は、第１ギヤ（12a1）の回転中心（O1）とリングギヤ（10a）の回転中心（O3）とを結ぶ直線（L1）よりも下方に位置する。

Description

ハイブリッド車両
　本発明は、ハイブリッド車両に関する。
　特許文献１には、シリーズ方式とパラレル方式とを切り替えて走行可能なハイブリッド車両が開示されている。このハイブリッド車両では、パラレル方式を実現するための伝達装置が内燃機関と駆動輪との間に設置されている。伝達装置は、内燃機関と接続する入力ギヤと、駆動輪と接続する出力ギヤと、入力ギヤと出力ギヤとを接続する中間ギヤと、内燃機関および入力ギヤ間の駆動力伝達経路を断接するクラッチと、を有する。
特許第6202256号公報
　入力ギヤは体積の大きな内燃機関からの駆動力が入力されるため、伝達装置が収容されたケース内において、他のギヤと比べて相対的に高い位置に設けられている。このため、入力ギヤは潤滑油の油面よりも高い位置にあり、潤滑油の供給が課題となる。上記従来のハイブリッド車両では、入力ギヤと噛み合う中間ギヤが入力ギヤよりも高い位置にあるため、潤滑油の掻き上げによって入力ギヤを潤滑するのが困難であった。
  本発明の目的は、入力ギヤの潤滑性を向上できるハイブリッド車両を提供することにある。
　本発明のハイブリッド車両では、内燃機関が発生する駆動力を駆動輪へ伝達する伝達装置において、中間ギヤの回転軸線に沿う方向を軸方向としたとき、中間ギヤの回転中心は、軸方向から見て、入力ギヤの回転中心と出力ギヤの回転中心とを結ぶ直線よりも鉛直方向下方に位置する。
　よって、中間ギヤによって掻き上げられた潤滑油を入力ギヤに供給できるため、入力ギヤの潤滑性を向上できる。
実施形態１のハイブリッド車両の駆動系を示す概略図である。 実施形態１のケース13をドライブシャフト5の軸方向から見た模式図である。 入力軸1bの横断面図である。
1　内燃機関
2　発電用モータ（発電機）
3　走行用モータ（電動機）
6　駆動輪
10a　リングギヤ（出力ギヤ）
11　内燃機関走行用クラッチ（断接装置）
12a1　第１ギヤ（入力ギヤ）
12a2　第２ギヤ（中間ギヤ）
12b　内燃機関最終減速ギヤ（中間ギヤ）
13　ケース
14　中間ギヤ
　〔実施形態１〕
  図１は、実施形態１のハイブリッド車両の駆動系を示す概略図である。
  実施形態１のハイブリッド車両は、内燃機関（エンジン）1、発電用モータ（発電機）2、走行用モータ（電動機）3、伝達装置4、ドライブシャフト5および駆動輪6を有する。
  内燃機関1のクランク軸1aは、入力軸1bと連結されている。入力軸1bは、発電用モータギヤ列7を介して発電用モータ2のモータ軸2aと連結されている。発電用モータギヤ列7は、３つのギヤ7a,7b,7cを有する。第１ギヤ7aは、入力軸1bと一体に回転する。第３ギヤ7cは、モータ軸2aと一体に回転する。第２ギヤ7bは、第１ギヤ7aおよび第３ギヤ7cとそれぞれ噛み合う。
　走行用モータ3のモータ軸3aは、モータ走行用クラッチ8を介して走行用モータ減速機構9と連結されている。走行用モータ減速機構9は、走行用モータギヤ列9aおよび走行用モータ最終減速ギヤ9bを有する。走行用モータギヤ列9aは、互いに噛み合う２つのギヤ9a1,9a2を有する。第１ギヤ9a1はモータ走行用クラッチ8における締結要素の一方と連結されている。締結要素の他方はモータ軸3aと連結されている。第２ギヤ9a2は、回転軸9cにより走行用モータ最終減速ギヤ9bと結合されている。走行用モータ最終減速ギヤ9bは、伝達装置4におけるデファレンシャル10のリングギヤ（出力ギヤ）10aと噛み合う。モータ走行用クラッチ8は、解放によりモータ軸3aと第１ギヤ9a1との相対回転を許容し、締結によりモータ軸3aと第１ギヤ9a1との相対回転を規制する。
　伝達装置4は、上記デファレンシャル10に加え、内燃機関走行用クラッチ（断接装置）11および内燃機関走行用ギヤ組12を有する。内燃機関走行用クラッチ11は、解放により入力軸1bと内燃機関走行用ギヤ組12（の第１ギヤ12a1）との相対回転を許容し、締結により入力軸1bと内燃機関走行用ギヤ組12との相対回転を規制する。内燃機関走行用ギヤ組12は、内燃機関走行用ギヤ列12aおよび内燃機関最終減速ギヤ12bを有する。内燃機関走行用ギヤ列12aは、互いに噛み合う２つのギヤ12a1,12a2を有する。第１ギヤ（入力ギヤ）12a1は内燃機関走行用クラッチ11における締結要素の一方と連結されている。締結要素の他方は入力軸1bと連結されている。第２ギヤ12a2は、回転軸12cにより内燃機関最終減速ギヤ12bと結合されている。内燃機関最終減速ギヤ12bは、リングギヤ10aと噛み合う。デファレンシャル10は、リングギヤ10aの他、内部に作動機構部（不図示）を有するデフケース10bを有する。作動機構部の左右サイドギヤは、左右のドライブシャフト5と結合されている。左右のドライブシャフト5は、駆動輪6と結合されている。
　実施形態１のハイブリッド車両は、モータ走行用クラッチ8を締結する一方、内燃機関走行用クラッチ11を解放することにより、走行用の動力源として走行用モータ3のみを用い、内燃機関1を発電用の動力源として使用するシリーズハイブリッドモードによる走行を行う。また、モータ走行用クラッチ8を解放する一方、内燃機関走行用クラッチ11を締結することにより、走行用の動力源として内燃機関1のみを用いる内燃機関直結モードによる走行を行う。なお、両クラッチ8,11を共に締結することにより、パラレルハイブリッドモードによる走行も可能である。
　図２は、実施形態１のケース13をドライブシャフト5の軸方向から見た模式図である。図３では、各ギヤの噛み合いピッチ円を図示している。また、図３の紙面上方は鉛直方向上方と一致し、紙面左方は車両前後方向左方と一致する。
  ケース13には、伝達装置4の構成要素（デファレンシャル10、内燃機関走行用クラッチ11および内燃機関走行用ギヤ組12）に加えて、発電用モータギヤ列7および走行用モータ減速機構9が収容されている。
  デファレンシャル10のリングギヤ10a、内燃機関走行用ギヤ組12の第２ギヤ12a2および内燃機関最終減速ギヤ12b、発電用モータギヤ列7の第２ギヤ7bおよび第３ギヤ7cは、ケース13の最下部に配置されている。各ギヤ10a,12a2,12b,7b,7cの最下端は、ケース13内の最下部に貯留されるオイル（以下、潤滑油）の油面OLよりも下方に位置する。油面OLは、各ギヤ10a,12a2,12b,7b,7cの下側略半分が常時浸かる高さに設定されている。
　走行用モータ減速機構9の各ギヤ9a1,9a2,9bは、リングギヤ10aよりも上方の位置に配置されている。第１ギヤ9a1は、第２ギヤ9a2および走行用モータ最終減速ギヤ9bよりも上方の位置に配置されている。
  内燃機関走行用ギヤ組12の第１ギヤ12a1および発電用モータギヤ列7の第１ギヤ7aは、発電用モータギヤ列7の第２ギヤ7b、内燃機関走行用ギヤ組12の第２ギヤ12a2および内燃機関最終減速ギヤ12bよりも上方の位置に配置されている。各ギヤ12a1,7aの最下端は、油面OLよりも上方に位置しており、潤滑油には浸かっていない。ドライブシャフト5の回転軸線方向から見たとき、第２ギヤ12a2および内燃機関最終減速ギヤ12bの回転中心O2は、第１ギヤ12a1の回転中心O1とリングギヤ10aの回転中心O3とを結ぶ直線L1よりも下方に位置する。
　図２において、各ギヤのピッチ円内側に記載された矢印は、車両前進時の回転方向を示すものである。ここで、第２ギヤ12a2および内燃機関最終減速ギヤ12bは、回転軸12cで連結された同一歯数のギヤであるため、１つの中間ギヤ14と見なせる。中間ギヤ14は、図２において、時計回りの方向に回転する。つまり、中間ギヤ14は、ケース13内に貯留された潤滑油を通過した中間ギヤ14の歯14aがリングギヤ10aの歯15よりも先に第１ギヤ12a1の歯16と噛み合う方向に回転する。
　ケース13の左側壁13aには、油溜まり17が設けられている。油溜まり17は、左側壁13aからケース13の内側へ突出し、上方が開口する凹形状を有する。油溜まり17は、中間ギヤ14によって掻き上げられた潤滑油を貯留可能である。油溜まり17は、その最下端に開口部17aを有する。
  左側壁13aにおいて、油溜まり17の下方には、油路18が設けられている。油路18は、左側壁13aからケース13の内側へ突出する凸条であり、開口部17aから落下した潤滑油は、油路18を伝って入力軸1bの先端部へと導かれる。
　図３は、入力軸1bの横断面図である。
  ケース13の左側壁13aには、軸受部19が設けられている。軸受部19には、ボールベアリング20が取り付けられている。ボールベアリング20は、入力軸1bの先端部を回転可能に支持する。軸受部19において、入力軸1bの先端面と対向する位置には、上方に開口する凹部19aが設けられている。凹部19aには、油路18を伝って流れる潤滑油が導入される。
  入力軸1bは、その内部に軸芯潤滑油路21および複数の径方向油路22を有する。軸芯潤滑油路21は、入力軸1bの先端から入力軸1bの回転軸線に沿う方向に延びる。軸芯潤滑油路21は、凹部19aと連通する。径方向油路22は、入力軸1bの回転軸線に対して放射方向に延び、軸芯潤滑油路21と入力軸1bの外周面とを連通する。
  油路18を通って凹部19aへと落下した潤滑油は、軸芯潤滑油路21へと供給され、遠心力により径方向油路22を通過して第１ギヤ7aおよび第１ギヤ12a1の潤滑に供される。
　次に、実施形態１の作用効果を説明する。
  実施形態１のハイブリッド車両は、入力軸1bから第１ギヤ12a1への駆動力の入力経路を断接可能な内燃機関走行用クラッチ11を有する。シリーズハイブリッドモードでは、内燃機関走行用クラッチ11を解放することにより、発電用モータ2へ駆動力を伝える経路（発電用モータギヤ列7）から分岐した先（内燃機関走行用ギヤ組12）において、無負荷で噛み合うギヤを削減できる。すなわち、内燃機関走行用ギヤ組12には、駆動輪6の回転が伝わるため、無負荷ではない。この結果、内燃機関1のトルク変動に伴う歯打ち音の発生を抑制できる。
　一方、内燃機関1は体積が大きく、クランク軸1aの上下方向位置は、ドライブシャフト5等と比べて相対的に高い位置となりやすい。このため、伝達装置4のケース13内において、内燃機関1からの駆動力が入力される内燃機関走行用ギヤ組12の第１ギヤ12a1についても、リングギヤ10a等と比べて相対的に高い位置に設けられる。シリーズハイブリッドモードにおいて、第１ギヤ12a1は空転し続ける（駆動輪6に連れ回りする）が、第１ギヤ12a1は相対的に高い位置にあり、ケース13内に貯留された潤滑油の油面OLから離れているため、潤滑油の供給が課題となる。
　これに対し、実施形態１のハイブリッド車両では、ドライブシャフト5の回転軸線方向から見たとき、中間ギヤ14（第２ギヤ12a2、内燃機関最終減速ギヤ12b）の回転中心O2は、第１ギヤ12a1の回転中心O1とリングギヤ10aの回転中心O3とを結ぶ直線L1よりも下方に位置する。これにより、中間ギヤ14によって油面OLの上方に掻き上げられた潤滑油の一部が第１ギヤ12a1に飛散し、第１ギヤ12a1に潤滑油を供給できるため、第１ギヤ12a1の潤滑性を向上できる。
　鉛直方向において、中間ギヤ14の最下端は、第１ギヤ12a1の最下端よりも下方に位置する。これにより、ケース13内に貯留された潤滑油に触れる中間ギヤ14の体積が大きくなるため、掻き上げられる潤滑油量が増大し、第１ギヤ12a1の潤滑性をさらに向上できる。
　第１ギヤ12a1は、中間ギヤ14によって掻き上げられた潤滑油のみで潤滑される。すなわち、第１ギヤ12a1に潤滑油を圧送するためのポンプが不要であるため、当該ポンプの作動に伴う動力損失の発生を防げる。
　中間ギヤ14は、ケース13内に貯留された潤滑油内を通過した中間ギヤ14の歯14aがリングギヤ10aの歯15よりも先に第１ギヤ12a1の歯16と噛み合う方向に回転する。中間ギヤ14がリングギヤ10aよりも先に第１ギヤ12a1と噛み合う構成とすることにより、中間ギヤ14によって油面OLの上方に掻き上げられた潤滑油が直接第１ギヤ12a1に飛散し、第１ギヤ12a1に多くの潤滑油を供給できるため、第１ギヤ12a1の潤滑性をさらに向上できる。
　中間ギヤ14により掻き上げられた潤滑油を第１ギヤ12a1に供給する油路として、油溜まり17、油路18、凹部19a、軸芯潤滑油路21および複数の径方向油路22を備える。これにより、中間ギヤ14によって掻き上げられた潤滑油のうち、第１ギヤ12a1に付着しなかった潤滑油の一部を、第１ギヤ12a1の潤滑に利用できる。この結果、中間ギヤ14によって掻き上げられた潤滑油の利用効率を高められる。また、第１ギヤ12a1の潤滑性をさらに向上できる。
　鉛直方向において、第１ギヤ12a1の最下端は、ケース13内に貯留された潤滑油の油面OLよりも上方に位置する。これにより、第１ギヤ12a1による潤滑油撹拌に伴う動力伝達効率の悪化を防止できる。また、潤滑油撹拌に伴う発熱を抑え、過剰な温度上昇を抑制できる。
　（他の実施形態）
  以上、本発明を実施するための形態を、実施形態に基づいて説明したが、本発明の具体的な構成は、実施形態に限定されるものではなく、発明の要旨を逸脱しない範囲の設計変更等があっても本発明に含まれる。
  例えば、ケース13内に貯留される潤滑油の油面OLは、少なくとも中間ギヤ14の一部が浸かる高さであればよい。

Claims (6)

  1. 　内燃機関と、
    　前記内燃機関が発生する駆動力を受けて発電する発電機と、
    　前記発電機が発電する電力の供給を受けて駆動輪を駆動する電動機と、
    　前記内燃機関が発生する駆動力を前記駆動輪へ伝達する伝達装置であって、入力ギヤ、出力ギヤ、中間ギヤ、ケースおよび断接装置を有し、
    　前記入力ギヤは、前記内燃機関からの駆動力が入力されるものであり、
    　前記出力ギヤは、前記駆動輪へ向けて駆動力を出力するものであり、
    　前記中間ギヤは、前記入力ギヤおよび前記出力ギヤ間で駆動力を伝達するものであり、
    　前記ケースは、前記入力ギヤ、前記中間ギヤおよび前記出力ギヤを収容するものであり、
    　前記断接装置は、前記入力ギヤへの駆動力の入力経路を切断と接続との間で切り替えるものであり、
    　前記中間ギヤの回転軸線に沿う方向を軸方向としたとき、前記中間ギヤの回転中心は、前記軸方向から見て、前記入力ギヤの回転中心と前記出力ギヤの回転中心とを結ぶ直線よりも鉛直方向下方に位置するものである、
    　前記伝達装置と、
    　を備えたハイブリッド車両。
  2. 　請求項１に記載のハイブリッド車両であって、
    　鉛直方向において、前記中間ギヤの最下端は、前記入力ギヤの最下端よりも下方に位置するハイブリッド車両。
  3. 　請求項１または２に記載のハイブリッド車両であって、
    　前記入力ギヤは、前記中間ギヤによって掻き上げられた潤滑油のみで潤滑されるハイブリッド車両。
  4. 　請求項１ないし３のいずれか１項に記載のハイブリッド車両であって、
    　前記中間ギヤは、前記ケース内に貯留された潤滑油内を通過した前記中間ギヤの歯が前記出力ギヤの歯よりも先に前記入力ギヤの歯と噛み合う方向に回転するハイブリッド車両。
  5. 　請求項１ないし４のいずれか１項に記載のハイブリッド車両は、
    　前記中間ギヤにより掻き上げられた潤滑油を前記入力ギヤに供給する油路を備えるハイブリッド車両。
  6. 　請求項１ないし５のいずれか１項に記載のハイブリッド車両であって、
    　鉛直方向において、前記入力ギヤの最下端は、前記ケース内に貯留された潤滑油の油面よりも上方に位置するハイブリッド車両。
PCT/JP2018/037400 2018-10-05 2018-10-05 ハイブリッド車両 WO2020070881A1 (ja)

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