WO2018045121A1 - Transmission d'essieu électrique avec transmission à engrenages planétaires variable continue à variateur à billes avec ou sans vectorisation de couple pour véhicules électriques ou hybrides - Google Patents

Transmission d'essieu électrique avec transmission à engrenages planétaires variable continue à variateur à billes avec ou sans vectorisation de couple pour véhicules électriques ou hybrides Download PDF

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Publication number
WO2018045121A1
WO2018045121A1 PCT/US2017/049521 US2017049521W WO2018045121A1 WO 2018045121 A1 WO2018045121 A1 WO 2018045121A1 US 2017049521 W US2017049521 W US 2017049521W WO 2018045121 A1 WO2018045121 A1 WO 2018045121A1
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WO
WIPO (PCT)
Prior art keywords
coupled
electric
continuously variable
planet carrier
axle
Prior art date
Application number
PCT/US2017/049521
Other languages
English (en)
Inventor
Krishna Kumar
William F. Waltz
Steven J. Wesolowski
Original Assignee
Dana Limited
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 Dana Limited filed Critical Dana Limited
Publication of WO2018045121A1 publication Critical patent/WO2018045121A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • 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
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/02—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of clutch
    • 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
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
    • F16H37/02—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings
    • F16H37/021—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings toothed gearing combined with continuous variable friction gearing
    • F16H37/022—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings toothed gearing combined with continuous variable friction gearing the toothed gearing having orbital motion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
    • F16H37/02—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings
    • F16H37/06—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts
    • F16H37/08—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing
    • F16H37/0833—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing with arrangements for dividing torque between two or more intermediate shafts, i.e. with two or more internal power paths
    • F16H37/084—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing with arrangements for dividing torque between two or more intermediate shafts, i.e. with two or more internal power paths at least one power path being a continuously variable transmission, i.e. CVT
    • F16H37/086—CVT using two coaxial friction members cooperating with at least one intermediate friction member
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K2001/001—Arrangement or mounting of electrical propulsion units one motor mounted on a propulsion axle for rotating right and left wheels of this axle
    • 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
    • F16H15/00—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by friction between rotary members
    • F16H15/02—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by friction between rotary members without members having orbital motion
    • F16H15/04—Gearings providing a continuous range of gear ratios
    • F16H15/06—Gearings providing a continuous range of gear ratios in which a member A of uniform effective diameter mounted on a shaft may co-operate with different parts of a member B
    • F16H15/26—Gearings providing a continuous range of gear ratios in which a member A of uniform effective diameter mounted on a shaft may co-operate with different parts of a member B in which the member B has a spherical friction surface centered on its axis of revolution
    • F16H15/28—Gearings providing a continuous range of gear ratios in which a member A of uniform effective diameter mounted on a shaft may co-operate with different parts of a member B in which the member B has a spherical friction surface centered on its axis of revolution with external friction surface
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
    • F16H37/02—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings
    • F16H37/06—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts
    • F16H37/08—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing
    • F16H37/0833—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing with arrangements for dividing torque between two or more intermediate shafts, i.e. with two or more internal power paths
    • F16H37/084—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing with arrangements for dividing torque between two or more intermediate shafts, i.e. with two or more internal power paths at least one power path being a continuously variable transmission, i.e. CVT
    • F16H2037/0866—Power split variators with distributing differentials, with the output of the CVT connected or connectable to the output shaft
    • F16H2037/0873—Power split variators with distributing differentials, with the output of the CVT connected or connectable to the output shaft with switching, e.g. to change ranges

Definitions

  • Hybrid vehicles are enjoying increased popularity and acceptance due in large part to the cost of fuel and greenhouse carbon emission government regulations for internal combustion engine vehicles.
  • Such hybrid vehicles include both an internal combustion engine as well as an electric motor to propel the vehicle.
  • the rotary shaft from a combination electric motor/generator is coupled by a gear train, planetary gear set, to the wheel.
  • the rotary shaft for the electric motor/generator unit rotates in unison with the wheel based on the speed ratio of the gear train.
  • an electric axle powertrain including: a continuously variable electric drivetrain including a motor/generator and a continuously variable transmission; a drive wheel axle operably coupled to the continuously variable electric drivetrain; a first wheel and a second wheel coupled to the drive wheel axle; a differential coupled to the continuously variable electric drivetrain and the drive wheel axle; and a planetary gear set coupled to the drive wheel axle and the continuously variable electric drivetrain, wherein the planetary gear set includes a ring gear, a planet carrier, and a sun gear.
  • an electric axle powertrain including a continuously variable electric drivetrain having a motor/generator, a first planetary gear set operably coupled to the motor/generator, and a second planetary gear set operably coupled to the motor/generator, wherein the first planetary gear set includes a first ring gear, a first planet carrier, and a first sun gear, and wherein the second planetary gear set includes a second ring gear, a second planet carrier, and a second sun gear; a drive wheel axle operably coupled to the continuously variable electric drivetrain; a differential coupled to the
  • Figure 1 is a side sectional view of a ball-type variator.
  • Figure 2 is a plan view of a carrier member that is used in the variator of Figure 1 .
  • Figure 3 is an illustrative view of different tilt positions of the ball-type variator of Figure 1.
  • Figure 4 is a schematic diagram of an electric axle powertrain having a continuously variable electric drivetrain drivingly engaged to a differential, axle, and wheels of a vehicle.
  • Figure 5 is a schematic diagram of an electric axle powertrain having a continuously variable electric drivetrain drivingly engaged to a planetary gear set, a differential, axle, and wheels of a vehicle.
  • Figure 6 is a schematic diagram of another electric axle powertrain having a continuously variable electric drivetrain drivingly engaged to a planetary gear set, a differential, axle, and wheels of a vehicle.
  • Figure 7 is a schematic diagram of a torque vectoring electric axle powertrain having a continuously variable electric drivetrain drivingly engaged to an axle, two clutches, and wheels of a vehicle.
  • Figure 8 is a schematic diagram of a torque vectoring electric axle powertrain having a continuously variable electric drivetrain drivingly engaged to an axle through a planetary gear set, two clutches, and wheels of a vehicle.
  • Figure 9 is a schematic diagram of another torque vectoring electric axle powertrain having a continuously variable electric drivetrain drivingly engaged to an axle through a planetary gear set, two clutches, and wheels of a vehicle.
  • Figure 10 is a schematic diagram of a torque vectoring electric axle powertrain having a continuously variable electric drivetrain drivingly engaged to an axle through two planetary gear sets, two brakes, and wheels of a vehicle.
  • Figure 11 is a schematic diagram of a torque vectoring electric axle powertrain having a continuously variable electric drivetrain drivingly engaged to an axle through two planetary gear sets, two brakes, and wheels of a vehicle.
  • Figure 12 is a schematic diagram of a powertrain having a continuously variable electric drivetrain coupled to a set of drive wheels.
  • Figure 13 is a schematic diagram of a powertrain having a continuously variable electric drivetrain coupled to two planetary gear sets.
  • Figure 14 is a schematic diagram of another powertrain having a continuously variable electric drivetrain coupled to two planetary gear sets.
  • Figure 15 is a schematic diagram of a powertrain having a continuously variable electric drivetrain and two clutches.
  • Figure 16 is a schematic diagram of a powertrain having a continuously variable electric drivetrain, two planetary gear sets, and two brakes.
  • Figure 17 is a schematic diagram of another powertrain having a continuously variable electric drivetrain, two planetary gear sets, and two brakes.
  • This powertrain relates to electric powertrain configurations and architectures that will be used in hybrid vehicles.
  • the powertrain and/or drivetrain configurations use a ball planetary style continuously variable transmission, such as the VariGlide ® , in order to couple power sources used in a hybrid vehicle, for example, combustion engines (internal or external), motors, generators, batteries, and gearing.
  • the powertrains disclosed herein are applicable to HEV, EV and Fuel Cell Hybrid systems.
  • a typical ball planetary variator CVT design such as that described in United States Patent Publication No. 2008/0121487 and in United States Patent No. 8,469,856, both incorporated herein by reference in their entirety, represents a rolling traction drive system, transmitting forces between the input and output rolling surfaces through shearing of a thin fluid film.
  • the technology is called Continuously Variable Planetary (CVP) due to its analogous operation to a planetary gear system.
  • the system includes an input disc (ring) driven by the power source, an output disc (ring) driving the CVP output, a set of balls fitted between these two discs and a central sun, as illustrated in Figure 1.
  • the balls are able to rotate around their own respective axle by the rotation of two carrier disks at each end of the set of balls axles.
  • the system is also referred to as the Ball-Type Variator.
  • CVTs based on a ball type variators, also known as CVP, for continuously variable planetary.
  • CVP continuously variable planetary.
  • Basic concepts of a ball type Continuously Variable Transmissions are described in United States Patent No. 8,469,856 and 8,870,711 incorporated herein by reference in their entirety.
  • the input ring 2 is referred to in illustrations and referred to in text by the label "r1”.
  • the output ring is referred to in illustrations and referred to in text by the label "r2”.
  • the idler (sun) assembly is referred to in illustrations and referred to in text by the label "s”.
  • the balls are mounted on tHtable axles 5, themselves held in a carrier (stator, cage) assembly having a first carrier member 6 operably coupled to a second carrier member 7.
  • the carrier assembly is denoted in illustrations and referred to in text by the label "c". These labels are collectively referred to as nodes ("r1 “, “r2”, “s”, “c”).
  • the first carrier member 6 rotates with respect to the second carrier member 7, and vice versa.
  • the first carrier member 6 is substantially fixed from rotation while the second carrier member 7 is configured to rotate with respect to the first carrier member, and vice versa.
  • the first carrier member 6 is provided with a number of radial guide slots 8.
  • the second carrier member 7 is provided with a number of radially offset guide slots 9, as illustrated in FIG. 2.
  • the radial guide slots 8 and the radially offset guide slots 9 are adapted to guide the tillable axles 5.
  • the axles 5 are adjusted to achieve a desired ratio of input speed to output speed during operation of the CVT.
  • adjustment of the axles 5 involves control of the position of the first and second carrier members to impart a tilting of the axles 5 and thereby adjusts the speed ratio of the variator.
  • Other types of ball CVTs also exist, like the one produced by Milner, but are slightly different.
  • FIG. 3 The working principle of such a CVP of FIG. 1 is shown on FIG. 3.
  • CVP itself works with a traction fluid.
  • the lubricant between the ball and the conical rings acts as a solid at high pressure, transferring the power from the input ring, through the balls, to the output ring.
  • the ratio is changed between input and output.
  • the ratio is one, illustrated in FIG. 3, when the axis is tilted the distance between the axis and the contact point change, modifying the overall ratio. All the balls' axes are tilted at the same time with a mechanism included in the carrier and/or idler.
  • the embodiments disclosed here are related to the control of a variator and/or a CVT using generally spherical planets each having a tiltable axis of rotation that is adjusted to achieve a desired ratio of input speed to output speed during operation.
  • adjustment of said axis of rotation involves angular misalignment of the planet axis in a first plane in order to achieve an angular adjustment of the planet axis in a second plane that is substantially perpendicular to the first plane, thereby adjusting the speed ratio of the variator.
  • the angular misalignment in the first plane is referred to here as "skew", "skew angle”, and/or "skew condition".
  • a control system coordinates the use of a skew angle to generate forces between certain contacting components in the variator that will tilt the planet axis of rotation. The tilting of the planet axis of rotation adjusts the speed ratio of the variator.
  • the terms “operationally connected,” “operationally coupled”, “operationally linked”, “operably connected”, “operably coupled”, “operably linked,” and like terms refer to a relationship (mechanical, linkage, coupling, etc.) between elements whereby operation of one element results in a corresponding, following, or simultaneous operation or actuation of a second element. It is noted that in using said terms to describe the embodiments, specific structures or mechanisms that link or couple the elements are typically described. However, unless otherwise specifically stated, when one of said terms is used, the term indicates that the actual linkage or coupling is capable of taking a variety of forms, which in certain instances will be readily apparent to a person of ordinary skill in the relevant technology.
  • Traction drives usually involve the transfer of power between two elements by shear forces in a thin fluid layer trapped between the elements.
  • the fluids used in these applications usually exhibit traction coefficients greater than conventional mineral oils.
  • the traction coefficient ( ⁇ ) represents the maximum available traction force which would be available at the interfaces of the contacting components and is the ratio of the maximum available drive torque per contact force.
  • friction drives generally relate to transferring power between two elements by frictional forces between the elements.
  • the CVTs described here are capable of operating in both tractive and frictional applications.
  • the CVT operates at times as a friction drive and at other times as a traction drive, depending on the torque and speed conditions present during operation.
  • Embodiments disclosed herein are directed to hybrid vehicle
  • the core element of the power flow is a CVP, such as a VariGlide, which functions as a continuously variable transmission having four nodes (r1 , r2, c, and s).
  • the CVP enables the electric machines (motor/generators, among others) to run at an optimized overall efficiency.
  • hydro-mechanical components such as hydromotors, pumps, accumulators, among others, are capable of being used in place of the electric machines indicated in the figures and
  • E-axle architectures disclosed herein could incorporate a supervisory controller that chooses the CVP ratio of highest efficiency and/or power from motor/generator to wheel.
  • Embodiments disclosed herein enable hybrid powertrains that are capable of operating at the best potential overall efficiency point in any mode and also provide torque variability, thereby leading to the optimal combination of powertrain performance and efficiency. It should be understood that electric or hybrid electric vehicles incorporating
  • embodiments of the hybrid architectures disclosed herein are capable of including a number of other powertrain components, such as, but not limited to, high-voltage battery pack with a battery management system or ultracapacitor, on-board charger, DC-DC converters, a variety of sensors, actuators, and controllers, among others.
  • powertrain components such as, but not limited to, high-voltage battery pack with a battery management system or ultracapacitor, on-board charger, DC-DC converters, a variety of sensors, actuators, and controllers, among others.
  • a lever diagram also known as a lever analogy diagram, is a translational-system representation of rotating parts for a planetary gear system.
  • a lever diagram is provided as a visual aid in describing the functions of the transmission.
  • a compound planetary gear set is often represented by a single vertical line ("lever").
  • the input, output, and reaction torques are represented by horizontal forces on the lever.
  • the lever motion, relative to the reaction point, represents direction of rotational velocities.
  • a typical planetary gear set having a ring gear, a planet carrier, and a sun gear can be presented by a vertical line having nodes "R” representing the ring gear, node “S” representing the sun gear, and node “C” representing the planet carrier.
  • R representing the ring gear
  • S representing the sun gear
  • C representing the planet carrier.
  • any mechanical coupling is depicted on a lever diagram as a node or a solid dot.
  • a node represents two components in a drivetrain that are rigidly connected.
  • the powertrain 10, 16, 21 includes a continuously variable electric drivetrain 12 operably coupled to a differential 13.
  • the differential 13 is a common differential gear set implemented to transmit rotational power.
  • the differential 13 is operably coupled to a wheel drive axle 14 configured to drive a set of vehicle wheels 15 (labeled as "15A” and " 5B" in FIG. 4).
  • an electric axle powertrain 16 includes the continuously variable electric drivetrain 12 coupled to a planetary gear set 17.
  • the planetary gear set 17 is provided with a ring gear 18, a planet carrier 19, and a sun gear 20.
  • the continuously variable electric drivetrain 2 is coupled to the sun gear 20.
  • the differential 3 is coupled to the planet carrier 19, and the ring gear 8 is a grounded member.
  • an electric axle powertrain 21 includes the continuously variable electric drivetrain 12 operably coupled to a planetary gear set 22.
  • the planetary gear set 22 is provided with a ring gear 23, a planet carrier 24, and a sun gear 25.
  • the continuously variable electric drivetrain 12 is operably coupled to the sun gear 25.
  • the differential 13 is operably coupled to the ring gear 23, and the planet carrier 24 is a grounded member.
  • the continuously variable electric drivetrain (CVED) 12 is optionally configured to provide an electric motor operably coupled to a continuously variable transmission (CVT) to provide power transmission from the electric axle powertrains described herein.
  • the CVED 12 incorporates a CVP such as the one described in FIGS. 1-3.
  • the CVED 12 incorporates a belt-and-pulley, toroidal-type variator, or other known continuously variable device and appropriate gearing.
  • a torque vectoring electric axle powertrain 26, 29, 34 includes the continuously variable electric drivetrain (CVED) 12 operably coupled to the wheel drive axle 14.
  • the wheel drive axle 14 is operably coupled to a first clutch 27 and a second clutch 28.
  • the first clutch 27 is configured to selectively engage the drive wheel axle 14 to the first wheel 15A.
  • the second clutch 28 is configured to selectively engage the drive wheel axle 14 to the second wheel 15B.
  • the first clutch 27 and the second clutch 28 are modulated to vary the torque transmitted to the first wheel 15A and the second wheel 15B, respectively. This modulation is sometimes referred to herein as "torque vectoring". Referring now to FIG.
  • a torque vectoring electric axle powertrain 29 includes the continuously variable drivetrain 12 operably coupled to a planetary gear set 30.
  • the planetary gear set 30 includes a ring gear 31 , a planet carrier 32, and a sun gear 33.
  • the continuously variable electric drivetrain 12 is operably coupled to the sun gear 33.
  • the drive wheel axle 14 is operably coupled to the planet carrier 32, and the ring gear 31 is a grounded member.
  • a torque vectoring electric axle powertrain 34 includes the continuously variable electric drivetrain 12 operably coupled to a planetary gear set 35.
  • the planetary gear set 35 is provided with a ring gear 36, a planet carrier 37, and a sun gear 38.
  • the continuously variable electric drivetrain 12 is operably coupled to the sun gear 38.
  • the ring gear 36 is operably coupled to the drive wheel axle 14, and the planet carrier 37 is a grounded member.
  • a torque vectoring electric axle powertrain 39 includes the continuously variable electric drivetrain 12 operably coupled to the drive wheel axle 14.
  • the drive wheel axle 14 is coupled to a first planetary gear set 40 having a first ring gear 41 , a first planet carrier 42, and a first sun gear 43.
  • the first ring gear 41 is coupled to a first brake 44.
  • the drive wheel axle 14 is coupled to the first sun gear 43, and the first wheel 15A is coupled to the first planet carrier 42.
  • the torque vectoring electric axle powertrain 39 includes a second planetary gear set 45 having a second ring gear 46, a second planet carrier 47, and a second sun gear 48.
  • the second ring gear 46 is operably coupled to a second brake 49.
  • the drive wheel axle 14 is coupled to the second sun gear 48, and the second wheel 15B is coupled to the second planet carrier 47.
  • the first brake 44 and the second brake 45 are modulated to vary the torque transmitted to the first wheel 15A and the second wheel 5B, respectively.
  • a torque vectoring electric axle powertrain 50 includes the continuously variable electric drivetrain 12 operably coupled to the drive wheel axle 14.
  • the torque vectoring electric axle powertrain 50 includes a first planetary gear set 51 having a first ring gear 52, a first planet carrier 53, and a first sun gear 54.
  • the first ring gear 52 is coupled to the first wheel 15A.
  • the first planet carrier 53 is coupled to a first brake 55.
  • the first sun gear 54 is coupled to the drive wheel axle 14.
  • the torque vectoring electric axle powertrain 50 includes a second planetary gear set 56 having a first ring gear 57, a second planet carrier 58, and a second sun gear 59.
  • the second ring gear 57 is coupled to the second wheel 15B.
  • the second sun gear 59 is coupled to the drive wheel axle 14.
  • the second planet carrier 58 is coupled to a second brake 60.
  • the first brake 55 and second brake 60 are modulated to vary the torque to the first wheel 15A and the second wheel 15B, respectively.
  • a powertrain 70 includes a continuously variable electric drivetrain (CVED) 71 operably coupled to a set of driven wheels 72. It should be appreciated that embodiments of continuously variable electric drivetrains disclosed herein are configurable to use in place of the continuously variable electric drivetrain 71.
  • CVED continuously variable electric drivetrain
  • a powertrain 73 includes the CVED 71 , a first planetary gear set 74 having a first ring gear 75, a first planet carrier 76, and a first sun gear 77.
  • the powertrain 73 includes a second planetary gear set 78 having a second ring gear 79, a second planet carrier 80, and a second sun gear 81.
  • the CVED 71 is operably coupled to the first sun gear 77 and the second sun gear 81 .
  • the first planet carrier 76 is operably coupled to a first wheel 72A.
  • the second planet carrier 80 is operably coupled to a second wheel 72B.
  • the first ring gear 75 and the second ring gear 79 are grounded members.
  • powertrain 82 includes the CVED 71 and a first planetary gear set 83 having a first ring gear 84, a first planet carrier 85, and a first sun gear 86.
  • the powertrain 82 includes a second planetary gear set 87 having a second ring gear 88, a second planet carrier 89, and a second sun gear 90.
  • the CVED 71 is operably coupled to the first sun gear 86 and the second sun gear 90.
  • the first ring gear 84 is operably coupled to a first wheel 72A.
  • the second ring gear 88 is operably coupled to a second wheel 72B.
  • the first planet carrier 85 and the second planet carrier 89 are grounded members.
  • a powertrain 91 includes the CVED 71 , a first clutch 92, and a second clutch 93.
  • the first clutch 92 is operably coupled to the CVED 71 and the first wheel 72A.
  • the second clutch 93 is operably coupled to the CVED 71 and the second wheel 72B.
  • a powertrain 94 includes the CVED 71 and a first planetary gear set 95 having a first ring gear 96, a first planet carrier 97, and a first sun gear 98.
  • the first ring gear 96 is operably coupled to a first brake 99.
  • the powertrain 94 includes a second planetary gear set 100 having a second ring gear 101 , a second planet carrier 102, and a second sun gear 103.
  • the second ring gear 101 is operably coupled to a second brake 104.
  • the CVED 71 is operably coupled to the first sun gear 98 and the second sun gear 103.
  • the first planet carrier 97 is operably coupled to the first wheel 72A.
  • the second planet carrier 102 is operably coupled to the second wheel 72B.
  • a powertrain 105 includes the CVED 71 and a first planetary gear set 107 having a first ring gear 107, a first planet carrier 108, and a first sun gear 109.
  • the first planet carrier 108 is operably coupled to a first brake 1 10.
  • the powertrain 105 includes a second planetary gear set 1 1 1 having a second ring gear 1 12, a second planet carrier 1 13, and a second sun gear 1 14.
  • the second planet carrier 1 13 is operably coupled to a second brake 1 15.
  • the CVED 71 is operably coupled to the first sun gear 109 and the second sun gear 1 14.
  • the first ring gear 107 is operably coupled to the first wheel 72A.
  • the second ring gear 1 12 is operably coupled to the second wheel 72B.
  • step ratios are optionally provided to the hybrid powertrains disclosed herein to obtain varying powerpath characteristics.
  • two or more planetary gears and a variator are optionally configured to provide a desired speed ratio range and operating mode to the electric machines. It should be noted that the connections of the electric machines to the
  • powerpaths disclosed herein are provided for illustrative example and it is within a designer's means to couple the electric machines to other components of the powertrains disclosed herein.
  • the battery is capable of being not just a high voltage pack such as lithium ion or lead-acid batteries, but also ultracapacitors or other pneumatic/hydraulic systems such as accumulators, or other forms of energy storage systems.
  • the motor/generators described herein are capable of representing hydromotors actuated by variable displacement pumps, electric machines, or any other form of rotary power such as pneumatic motors driven by pneumatic pumps.
  • the electric axle powertrain architectures depicted in the figures and described in text is capable of being extended to create a hydro- mechanical CVT architectures as well for hydraulic hybrid systems.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Friction Gearing (AREA)
  • Hybrid Electric Vehicles (AREA)
  • Transmission Devices (AREA)

Abstract

L'invention concerne un groupe motopropulseur à essieu électrique qui comprend: une chaîne cinématique électrique à variation continue comportant un moteur/générateur et une transmission variable continue; un essieu de roue motrice couplé de manière fonctionnelle à la chaîne cinématique électrique à variation continue; une première roue et une seconde roue couplées à l'essieu de roue motrice; un différentiel couplé à la chaîne cinématique électrique à variation continue et à l'essieu de roue motrice; et un train planétaire couplé à l'essieu de roue motrice et à la chaîne cinématique électrique à variation continue, ledit train planétaire comprenant une couronne, un porte-satellites et un planétaire.
PCT/US2017/049521 2016-08-31 2017-08-31 Transmission d'essieu électrique avec transmission à engrenages planétaires variable continue à variateur à billes avec ou sans vectorisation de couple pour véhicules électriques ou hybrides WO2018045121A1 (fr)

Applications Claiming Priority (12)

Application Number Priority Date Filing Date Title
US201662381682P 2016-08-31 2016-08-31
US201662381675P 2016-08-31 2016-08-31
US201662381693P 2016-08-31 2016-08-31
US62/381,682 2016-08-31
US62/381,675 2016-08-31
US62/381,693 2016-08-31
US201662428127P 2016-11-30 2016-11-30
US62/428,127 2016-11-30
US201662434015P 2016-12-14 2016-12-14
US62/434,015 2016-12-14
US201762452714P 2017-01-31 2017-01-31
US62/452,714 2017-01-31

Publications (1)

Publication Number Publication Date
WO2018045121A1 true WO2018045121A1 (fr) 2018-03-08

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Application Number Title Priority Date Filing Date
PCT/US2017/049534 WO2018045128A2 (fr) 2016-08-31 2017-08-31 Transmission d'essieu électrique avec une transmission planétaire à variation continue de variateur à billes avec et sans vectorisation de couple pour véhicules électriques électriques et hybrides
PCT/US2017/049567 WO2018045146A1 (fr) 2016-08-31 2017-08-31 Boîte de vitesses d'essieu électrique à boîte de vitesses à trains planétaires à variation continue de variateur à billes avec et sans guidage de couple pour véhicules électriques et hybrides électriques
PCT/US2017/049521 WO2018045121A1 (fr) 2016-08-31 2017-08-31 Transmission d'essieu électrique avec transmission à engrenages planétaires variable continue à variateur à billes avec ou sans vectorisation de couple pour véhicules électriques ou hybrides

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PCT/US2017/049534 WO2018045128A2 (fr) 2016-08-31 2017-08-31 Transmission d'essieu électrique avec une transmission planétaire à variation continue de variateur à billes avec et sans vectorisation de couple pour véhicules électriques électriques et hybrides
PCT/US2017/049567 WO2018045146A1 (fr) 2016-08-31 2017-08-31 Boîte de vitesses d'essieu électrique à boîte de vitesses à trains planétaires à variation continue de variateur à billes avec et sans guidage de couple pour véhicules électriques et hybrides électriques

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114291108A (zh) * 2021-11-19 2022-04-08 仓擎智能科技(上海)有限公司 航空器引导过程中无人引导车的安全控制方法和装置
DE102022002616A1 (de) 2021-07-23 2023-01-26 Mercedes-Benz Group AG Drehmomentverteilung unter Verwendung eines stufenlosen Getriebes

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020057712A1 (fr) * 2018-09-18 2020-03-26 Robert Bosch Gmbh Groupe motopropulseur doté d'une transmission à variation continue pour un véhicule électrique et procédé de fonctionnement d'un véhicule électrique
FR3100755B1 (fr) * 2019-09-17 2022-01-07 Valeo Embrayages Chaîne de transmission électrique pour véhicule automobile
DE102020201426A1 (de) * 2020-02-06 2021-08-12 Zf Friedrichshafen Ag Elektrische Antriebsanordnung für ein Fahrzeug

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080121487A1 (en) 2003-02-28 2008-05-29 Fallbrook Technologies Inc. Continuously variable transmission
US8469856B2 (en) 2008-08-26 2013-06-25 Fallbrook Intellectual Property Company Llc Continuously variable transmission
WO2014039448A2 (fr) * 2012-09-07 2014-03-13 Dana Limited Transmission variable en continu du type à bille comportant des schémas de puissance à sorties accouplées
WO2014039901A1 (fr) * 2012-09-07 2014-03-13 Dana Limited Transmission à variation infinie/transmission à variation continue du type à billes
WO2014039447A1 (fr) * 2012-09-06 2014-03-13 Dana Limited Transmission ayant un entraînement à variateur variable de façon continue ou infinie
WO2014039713A1 (fr) * 2012-09-07 2014-03-13 Dana Limited Transmission à variation infinie basée sur un planétaire à variation continue à billes comprenant des chemins de division de puissance
US20140274536A1 (en) * 2013-03-14 2014-09-18 Dana Limited Ball type continuously variable transmission
US8870711B2 (en) 2008-10-14 2014-10-28 Fallbrook Intellectual Property Company Llc Continuously variable transmission
DE102013016441A1 (de) * 2013-09-27 2015-04-02 Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr Vorrichtung zum Antrieb eines Fahrzeuges

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002199506A (ja) * 2000-12-22 2002-07-12 Mazda Motor Corp ハイブリッド駆動装置
WO2014179719A1 (fr) * 2013-05-03 2014-11-06 Dana Limited Transmission épicycloïdale à variation continue d'entraînement de roue arrière à 4 modes

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080121487A1 (en) 2003-02-28 2008-05-29 Fallbrook Technologies Inc. Continuously variable transmission
US8469856B2 (en) 2008-08-26 2013-06-25 Fallbrook Intellectual Property Company Llc Continuously variable transmission
US8870711B2 (en) 2008-10-14 2014-10-28 Fallbrook Intellectual Property Company Llc Continuously variable transmission
WO2014039447A1 (fr) * 2012-09-06 2014-03-13 Dana Limited Transmission ayant un entraînement à variateur variable de façon continue ou infinie
WO2014039448A2 (fr) * 2012-09-07 2014-03-13 Dana Limited Transmission variable en continu du type à bille comportant des schémas de puissance à sorties accouplées
WO2014039901A1 (fr) * 2012-09-07 2014-03-13 Dana Limited Transmission à variation infinie/transmission à variation continue du type à billes
WO2014039713A1 (fr) * 2012-09-07 2014-03-13 Dana Limited Transmission à variation infinie basée sur un planétaire à variation continue à billes comprenant des chemins de division de puissance
US20140274536A1 (en) * 2013-03-14 2014-09-18 Dana Limited Ball type continuously variable transmission
DE102013016441A1 (de) * 2013-09-27 2015-04-02 Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr Vorrichtung zum Antrieb eines Fahrzeuges

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022002616A1 (de) 2021-07-23 2023-01-26 Mercedes-Benz Group AG Drehmomentverteilung unter Verwendung eines stufenlosen Getriebes
CN114291108A (zh) * 2021-11-19 2022-04-08 仓擎智能科技(上海)有限公司 航空器引导过程中无人引导车的安全控制方法和装置
CN114291108B (zh) * 2021-11-19 2024-05-17 仓擎智能科技(上海)有限公司 航空器引导过程中无人引导车的安全控制方法和装置

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WO2018045146A1 (fr) 2018-03-08
WO2018045128A2 (fr) 2018-03-08

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