WO2022020941A1 - Dispositif d'entraînement à direction transversale électromécanique pour un véhicule - Google Patents

Dispositif d'entraînement à direction transversale électromécanique pour un véhicule Download PDF

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Publication number
WO2022020941A1
WO2022020941A1 PCT/CA2021/051024 CA2021051024W WO2022020941A1 WO 2022020941 A1 WO2022020941 A1 WO 2022020941A1 CA 2021051024 W CA2021051024 W CA 2021051024W WO 2022020941 A1 WO2022020941 A1 WO 2022020941A1
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WO
WIPO (PCT)
Prior art keywords
output
planetary gear
vehicle
motors
output planetary
Prior art date
Application number
PCT/CA2021/051024
Other languages
English (en)
Inventor
Grant WRIGHT
Andrew Johnson
Ron SCHEPER
Original Assignee
Kinetics Drive Solutions Inc.
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 Kinetics Drive Solutions Inc. filed Critical Kinetics Drive Solutions Inc.
Priority to US18/017,909 priority Critical patent/US20230271506A1/en
Priority to KR1020237004310A priority patent/KR20230042705A/ko
Priority to EP21850609.5A priority patent/EP4188773A1/fr
Priority to CA3187550A priority patent/CA3187550A1/fr
Priority to IL299983A priority patent/IL299983A/en
Publication of WO2022020941A1 publication Critical patent/WO2022020941A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D11/00—Steering non-deflectable wheels; Steering endless tracks or the like
    • B62D11/02—Steering non-deflectable wheels; Steering endless tracks or the like by differentially driving ground-engaging elements on opposite vehicle sides
    • B62D11/04—Steering non-deflectable wheels; Steering endless tracks or the like by differentially driving ground-engaging elements on opposite vehicle sides by means of separate power sources
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
    • B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
    • B60L15/2054—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed by controlling transmissions or clutches
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • B60L50/61—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries by batteries charged by engine-driven generators, e.g. series hybrid electric vehicles
    • 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
    • B60K17/043—Transmission unit disposed in on near the vehicle wheel, or between the differential gear unit and the wheel
    • B60K17/046—Transmission unit disposed in on near the vehicle wheel, or between the differential gear unit and the wheel with planetary gearing having orbital motion
    • 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
    • B60K7/00—Disposition of motor in, or adjacent to, traction wheel
    • B60K2007/0046—Disposition of motor in, or adjacent to, traction wheel the motor moving together with the vehicle body, i.e. moving independently from the wheel axle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K7/00—Disposition of motor in, or adjacent to, traction wheel
    • B60K2007/0061—Disposition of motor in, or adjacent to, traction wheel the motor axle being parallel to the wheel axle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K7/00—Disposition of motor in, or adjacent to, traction wheel
    • B60K7/0007—Disposition of motor in, or adjacent to, traction wheel the motor being electric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2220/00—Electrical machine types; Structures or applications thereof
    • B60L2220/40—Electrical machine applications
    • B60L2220/42—Electrical machine applications with use of more than one motor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2220/00—Electrical machine types; Structures or applications thereof
    • B60L2220/40—Electrical machine applications
    • B60L2220/46—Wheel motors, i.e. motor connected to only one wheel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/20—Off-Road Vehicles
    • B60Y2200/25—Track vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D11/00—Steering non-deflectable wheels; Steering endless tracks or the like
    • B62D11/001—Steering non-deflectable wheels; Steering endless tracks or the like control systems
    • 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
    • Y02T10/64—Electric machine technologies in electromobility

Definitions

  • the invention relates to the field of drive devices useful as a vehicle propulsion system and in particular, a electro-mechanical drive device suitable for use in a wheeled or track laying vehicle supplying main propulsion and steering functions.
  • a drive device suitable for use in a wheeled or track laying vehicle supplying main propulsion and steering functions is provided.
  • a track laying vehicle will have a left-hand and right-hand track which can be driven at the same speed for straight-line movement or one track driven slower relative to the other for steering or pivot turning of the vehicle.
  • the prior art shows separate electric motors/mechanical transmission drive systems being used in a track laying vehicle, with one electric motor/mechanical transmission per track.
  • the vehicle By varying the speed/torque of each motor, the vehicle can be propelled in a straight line or steered. If a component l in one drive breaks, only one track on the intact side can be driven to continue vehicle movement.
  • steering becomes inefficient as the inside track must often be slowed down (power absorbed) to enable steering; either the inside track must have a brake to slow it sufficiently (very inefficient) or the inside track’s motor becomes a generator (more efficient than a brake but losses occur turning mechanical power into electrical power, through the power control unit, then back into mechanical power at the outside track’s motor).
  • An alternative drive device as provided by US 2005/0187067 and as shown in Fig. 2 is to use a gear assembly with one motor providing linear traction and a second motor providing steering overlaying power on the left- and right-hand outputs through a pair of summing planetary differentials.
  • the advantage of this device is steering can be very efficient since power can be absorbed from the inside track and transferred to the outside track.
  • the disadvantage is that a separate motor and gearing system is required for steering and the steering motor cannot be used for linear traction and the linear traction motor cannot be used for steering.
  • the invention presented here solves the problem of choosing between a system which has the added weight of a separate steering system versus a less efficient system which uses a dual independent motor drive.
  • an electro-mechanical cross steer device for a vehicle.
  • the device may include a first and a second motor and first and second output planetary gear set, each having a transfer gear assembly mechanically connected to the first and second motors, respectively.
  • a differential may be included which is mechanically connected to the first and second output planetary gear sets via a mainshaft connected to the first and second output planetary gear sets.
  • First and second input shafts may be mechanically connected to the first and second transfer gear assemblies and to the differential.
  • First and second output shafts may be respectively connected to the first and second output planetary gear sets with each of the output shafts operable to drive a particular side of a vehicle.
  • speed ratios between the first and second output shafts may be 1 :1 and the vehicle may move in a straight line.
  • the speed ratios between the first and second output shafts may not be 1 : 1 and braking energy from an output shaft may be transferred to the other output shaft thereby allowing steering of the vehicle without braking energy being dissipated as heat.
  • a method for electro- mechanically cross-steering a vehicle may provide a first and a second motor and first and second output planetary gear set, each having a transfer gear assembly mechanically connected to the first and second motors, respectively.
  • a differential may be provided which is mechanically connected to the first and second output planetary gear sets via a mainshaft connected to the first and second output planetary gear sets.
  • First and second input shafts may be provided that are mechanically connected to the first and second transfer gear assemblies and to the differential.
  • First and second output shafts may be respectively provided and connected to the first and second output planetary gear sets with each of the output shafts operable to drive a particular side of a vehicle.
  • speed ratios between the first and second output shafts may be 1 : 1 and the vehicle may move in a straight line.
  • the speed ratios between the first and second output shafts may not be 1 : 1 and braking energy from an output shaft may be transferred to the other output shaft thereby allowing steering of the vehicle without braking energy being dissipated as heat.
  • Fig. 1 is PRIOR ART schematic of 2 separate electric motors/mechanical transmission drive systems
  • Fig. 2 is PRIOR ART schematic of an alternative gear assembly with one motor providing linear traction and a second motor providing steering;
  • Fig. 3 is a schematic of a single mode electro-mechanical cross-steer drive device of the present invention.
  • Fig. 4. is a schematic of a components of a center differential of Fig. 3;
  • Fig. 5 is partial cross section of the center differential of Fig. 3;
  • Fig. 6 is a schematic of a left hand (LH) output planetary of Fig. 3;
  • Fig. 7 is a schematic of a right hand (RFI) output planetary of Fig. 3;
  • Fig. 8 is a schematic of a single mode / single range electro-mechanical cross steer drive device with motors coaxial with output shafts of the present invention
  • Fig. 9 is a schematic of a dual mode / two range electro-mechanical cross-steer drive device of the present invention
  • Fig. 10 is a schematic of a dual mode / three range electro-mechanical cross-steer drive device of the present invention
  • Fig. 11 is a schematic with a LH/RH motor coupling clutch and a differential brake added to the present invention
  • Fig. 12 is a schematic with LH/RH motor coupling clutch active of the present invention
  • Fig. 13 is a schematic of the preferred embodiment of the present invention
  • Fig. 14 is a schematic of 1 st range components driving/steering in the [referred embodiment of the present invention
  • Fig. 15 is a schematic of 2 nd range components driving/steering in the preferred embodiment of the present invention.
  • Fig. 16 is a schematic of 3 rd range components driving/steering in the preferred embodiment of the present invention.
  • the drive device 1 includes left hand (LH) 2 and right hand (RH) 3 motors, respectively.
  • a center differential 100 is provided with a LH input shaft 101, a RH input shaft 102 and center differential output shaft 103.
  • LH transfer gear assembly 20 and RH transfer gear assembly 30 are also provided.
  • LH output planetary gear set 40 and RH output planetary gear set 50 are provided with each gear set having at least 3 components.
  • the device 1 also includes a mainshaft 12, LH output shaft 4 and RH output shaft 5.
  • a housing 19 supports the above components.
  • LH motor 2 is mechanically connected to a first component of the LH output planetary gear set 40 with LH transfer gear assembly 20.
  • the first component of the LH output planetary gear set 40 is a sun gear 41.
  • RH motor 3 is mechanically connected to a first component of the RH output planetary gear set 50 with RH transfer gear assembly 30.
  • the first component of the RH output planetary gear set 50 is a sun gear 51.
  • LH and RH motors 2 and 3 are also connected to the LH and RH input shafts 101 and 102 respectively of center differential 100 with LH and RH transfer gear assemblies 20 and 30.
  • the center differential 100 is connected to a second component of the LH output planetary gear set 40 with mainshaft 12 and to a second component of the RH output planetary gear set 50 also with mainshaft 12.
  • the second components of the LH and RH output planetary gear sets 40 and 50 are ring gears 42 and 52 respectively.
  • a third component of the LH output planetary gear set 40 is connected to the LH output shaft 4.
  • a third component of the RH output planetary gear set 50 is connected to the RH Output Shaft 5.
  • the third components of the LH and RH output planetary gear sets 40 and 50 are carrier assemblies 43 and 53 respectively.
  • the LH and RH 2a and 2b motors are located coaxially with the LH and RH output shafts 4 and 5 and are directly connected to the output planetary gear sets 40 and 50.
  • the motors 2a and 2b of the alternate embodiment are constructed in a manner to allow the LH and RH output shafts 4 and 5 to pass freely through the rotational axes of the motors.
  • first second and third components of the LH and RH output planetary gear sets 40 and 50 could be any of the suns, rings or carriers of the LH and RH Output Planetary Gear Sets 40 and
  • the speed ratios between left hand and right-hand outputs of the drive unit are both 1 :1 and the vehicle moves in a straight line; torques are adjusted as required to maintain straight line operation.
  • steering capability is enabled; torques are adjusted and may be negative (braking) at one output while positive (driving) at the other output.
  • the steering is said to be regenerative since braking energy is transferred from the braking side to the driving side rather than being dissipated as heat through a conventional brake-steer system.
  • Cross Steer Mode meaning that mechanical power from the LH and RH Motors 2 and 3 interact before arriving at the LH and RH output shafts 4 and 5.
  • the LH and RH motors are variable displacement hydraulic motors accepting fluid pressure and flow from one or more hydraulic pumps and/or accumulators.
  • the LH output planetary gear set 40 includes three components, a sun gear 41, a ring gear 42, and a carrier assembly 43.
  • Carrier assembly 43 includes a carrier 44, a plurality of planet gears 44a, 44b, etc. mounted in the carrier assembly with each planet gear meshing with sun gear 41 and ring gear 42.
  • the LH output planetary gear set 40 has one component connected to the LH motor 2, a second component connected to the LH output shaft 4 and a third component connected to the mainshaft 12.
  • the LH output planetary gear set 40 combines torque, speed and power from the LH motor 2 and the mainshaft 12 and transfers the combined torque, speed and power to the LH output shaft 4.
  • the RH output planetary gear set 50 includes three components in an analogous arrangement to the LH output planetary gear set 40, a sun gear 51, a ring gear 52, and a carrier assembly 53.
  • Carrier assembly 53 also includes a carrier 54, plurality of planet gears 54a, 54b, etc. mounted in the carrier assembly with each planet gear meshing with sun gear 51 and ring gear 52.
  • the RH output planetary gear Set 50 has one component connected to the RH motor 3, a second component connected to the RH output shaft 5 and a third component connected to the mainshaft 12.
  • the RH output planetary gear set 50 Analogous to the LH output planetary gear set 40, the RH output planetary gear set 50 combines torque, speed and power from the RH motor 3 and the mainshaft 12 and transfers the combined torque, speed and power to the RH output shaft 5.
  • the LH and RH output planetary gear sets 40 and 50 may also include are compound planetaries each with more than three components.
  • the center differential 100 includes a planetary which includes at least three components, a LH sun gear 105, a RH sun gear 106, and a carrier assembly 120.
  • Carrier assembly 120 includes a carrier 107, a plurality of LH compound planet gears 109a, 109b, etc. mounted in the carrier assembly with each planet gear meshing with LH sun gear 105.
  • a plurality of RH compound planet gears 110a, 110b, etc. mounted in the carrier assembly 120 with each planet gear meshing (as shown in dotted line 200) with RH sun gear 106.
  • the LH compound planet gears 109a, 109b, etc. mesh with the corresponding RH compound planet gears 110a, 110b, etc.
  • the center differential 100 has one component connected to the LH motor 2, a second component connected to the RH motor 3 and a third component connected to at least one output shaft.
  • the center differential 100 has the LH sun gear 105 connected to the LH motor 2, the RH sun gear 106 connected to the RH motor 3 and the carrier assembly 120 connected to center differential output shaft 103.
  • the speed of center differential output shaft 103 is the average of the LH and RH input shafts 101 and 102.
  • both inputs to the center differential 100 are turning at the same speed the output(s) from the center differential turns at that speed.
  • the output(s) from the center differential turns at the average of the two input speeds.
  • the output(s) from the center differential do not turn.
  • the function of the center differential 100 is similar to a differential in a passenger car i.e. to balance the torque between LH and RH output shafts and while allowing a speed differential between LH and RH output shafts when required such as making a turn.
  • the center differential 100 works in concert with LH and RH output planetary gear sets and separate LH and RH motors and, to introduce steering into the vehicle motion.
  • clutch 11 is introduced between the center differential 100 and the mainshaft 12 and first brake 9 is introduced between the mainshaft 12 and the housing 19. With clutch 11 engaged and first brake 9 disengaged, the drive device 1 operates as described above.
  • a second mode of operation is enabled and hence a second speed/torque range is also enabled.
  • the mode described here is known as Direct Steer Mode.
  • center differential 100 is not active and mainshaft 12 with LH and RH ring gears 42 and 52 are prevented from turning.
  • Power from the LH motor 2 only flows through the LH output planetary to the LH output shaft and likewise power from the RH Motor 3 only flows through the RH output planetary to the RH output shaft.
  • Steering is enabled by adjusting the speed ratio between LH and RH motors 2 and 3 but mechanical regenerative steering is not enabled.
  • intermediate gearset 60 is introduced between the center differential output shaft 103 and mainshaft 12.
  • intermediate gearset 60 is a planetary gearset with a first component connected to the center differential output shaft 103 and a second component connected to the mainshaft 12 and a third component.
  • Second brake 10 is introduced between the third component of intermediate gearset 60 and the housing 19. With second brake 10 activated while first brake 9 and clutch 11 are deactivated, second brake 10 prevents the third component of intermediate gearset 60 from turning and enables a change in speed and torque between center differential output shaft 103 and mainshaft 12.
  • the first component of intermediate gearset 60 is a sun gear
  • the second component is a carrier assembly
  • the third component is a ring gear.
  • any of the sun, ring or carrier assembly is any of the first, second or third components.
  • the intermediate gearset 60 may be a compound planetary with additional clutches and/or brakes capable of one or more speed ranges, or a spur gear set with a clutch to engage the gear set.
  • One or more gearsets similar to intermediate gearset 60 may also be introduced between center differential output shaft 103 and mainshaft 12 along with means to individually engage each gearset to allow more than one speed/torque ratio change between center differential output shaft 103.
  • the center differential 100 may be mechanically prevented from rotating by connecting it to the drive housing 19 by engaging the differential brake 170 allowing for steering control while coasting using a single motor.
  • a Dual Mode / three Range Drive Device is depicted.
  • the drive device 1 can switch between two configurations or modes in conjunction with two geared ranges to attain three output speed ranges along with regenerative steering in two of the three ranges.
  • the gear ratios of the gear sets are such that the following table qualitatively describes the torque and speed ratios in each range:
  • Torque Ratio is defined here as the combined torque at the LH and RH Output Shafts 4 and 5 divided by the combined torque provided by the LH and RH Motors 2 and 3.
  • Speed Ratio is defined here as the average speed at the LH and RH Output Shafts 4 and 5 divided by the average speed of the LH and RH Motors 2 and 3.
  • an aspect means “one or more (but not all) embodiments of the disclosed invention(s)", unless expressly specified otherwise.
  • a reference to “another embodiment” or “another aspect” in describing an embodiment does not imply that the referenced embodiment is mutually exclusive with another embodiment (e.g., an embodiment described before the referenced embodiment), unless expressly specified otherwise.
  • the phrase "at least one of”, when such phrase modifies a plurality of things means any combination of one or more of those things, unless expressly specified otherwise.
  • the phrase "at least one of a widget, a car and a wheel” means either (i) a widget, (ii) a car, (iii) a wheel, (iv) a widget and a car, (v) a widget and a wheel, (vi) a car and a wheel, or (vii) a widget, a car and a wheel.
  • the phrase "at least one of”, when such phrase modifies a plurality of things does not mean "one of each of" the plurality of things.
  • Numerical terms such as “one”, “two”, etc. when used as cardinal numbers to indicate quantity of something mean the quantity indicated by that numerical term, but do not mean at least the quantity indicated by that numerical term.
  • the phrase “one widget” does not mean “at least one widget”, and therefore the phrase “one widget” does not cover, e.g., two widgets.

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Power Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Automation & Control Theory (AREA)
  • Retarders (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

La présente invention concerne un dispositif de direction transversale électromécanique pour un véhicule. Le dispositif peut comprendre un premier et un deuxième moteur ainsi qu'un premier et un deuxième ensemble d'engrenages planétaires de sortie, chacun comportant un ensemble engrenage de transfert respectivement relié mécaniquement aux premier et deuxième moteurs. Un différentiel peut en outre être inclus, lequel est relié mécaniquement aux premier et deuxième ensembles d'engrenages planétaires de sortie par le biais d'un arbre principal relié aux premier et deuxième ensembles d'engrenages planétaires de sortie. Des premier et deuxième arbres d'entrée peuvent être reliés mécaniquement aux premier et deuxième ensembles d'engrenages de transfert et au différentiel. Des premier et deuxième arbres de sortie peuvent être respectivement reliés aux premier et deuxième ensembles d'engrenages planétaires de sortie, chacun des arbres de sortie pouvant être utilisé pour entraîner un côté particulier d'un véhicule.
PCT/CA2021/051024 2020-07-27 2021-07-22 Dispositif d'entraînement à direction transversale électromécanique pour un véhicule WO2022020941A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US18/017,909 US20230271506A1 (en) 2020-07-27 2021-07-22 An Electro-Mechanical Cross Steer Drive Device for a Vehicle
KR1020237004310A KR20230042705A (ko) 2020-07-27 2021-07-22 차량용 전자-기계식 교차 조향 구동 장치
EP21850609.5A EP4188773A1 (fr) 2020-07-27 2021-07-22 Dispositif d'entraînement à direction transversale électromécanique pour un véhicule
CA3187550A CA3187550A1 (fr) 2020-07-27 2021-07-22 Dispositif d'entrainement a direction transversale electromecanique pour un vehicule
IL299983A IL299983A (en) 2020-07-27 2021-07-22 An electro-mechanical cross drive device for a car

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US202063057126P 2020-07-27 2020-07-27
US63/057,126 2020-07-27

Publications (1)

Publication Number Publication Date
WO2022020941A1 true WO2022020941A1 (fr) 2022-02-03

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Application Number Title Priority Date Filing Date
PCT/CA2021/051024 WO2022020941A1 (fr) 2020-07-27 2021-07-22 Dispositif d'entraînement à direction transversale électromécanique pour un véhicule

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Country Link
EP (1) EP4188773A1 (fr)
KR (1) KR20230042705A (fr)
CA (1) CA3187550A1 (fr)
IL (1) IL299983A (fr)
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US4803897A (en) * 1987-09-18 1989-02-14 General Electric Company Drive system for track-laying vehicles
US5445234A (en) * 1994-02-16 1995-08-29 General Motors Corporation Dual drive transmission
US20050227803A1 (en) * 2004-04-07 2005-10-13 Holmes Alan G Compound differential dual power path transmission
US20060283641A1 (en) * 2003-09-26 2006-12-21 Zf Friedrichshafen Ag Electrical drive system for a vehicle with skid steering
US20080210481A1 (en) * 2005-06-10 2008-09-04 Zf Friedrichshafen Ag Electric Drive System Comprising Differential Steering for a Vehicle, Drive Unit and Vehicle
CN103332109A (zh) * 2013-07-04 2013-10-02 北京理工大学 一种履带车辆机电耦合传动装置
WO2017198356A1 (fr) * 2016-05-18 2017-11-23 Qinetiq Limited Configurations d'entraînement pour véhicules à direction différentielle

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4803897A (en) * 1987-09-18 1989-02-14 General Electric Company Drive system for track-laying vehicles
US5445234A (en) * 1994-02-16 1995-08-29 General Motors Corporation Dual drive transmission
US20060283641A1 (en) * 2003-09-26 2006-12-21 Zf Friedrichshafen Ag Electrical drive system for a vehicle with skid steering
US20050227803A1 (en) * 2004-04-07 2005-10-13 Holmes Alan G Compound differential dual power path transmission
US20080210481A1 (en) * 2005-06-10 2008-09-04 Zf Friedrichshafen Ag Electric Drive System Comprising Differential Steering for a Vehicle, Drive Unit and Vehicle
CN103332109A (zh) * 2013-07-04 2013-10-02 北京理工大学 一种履带车辆机电耦合传动装置
WO2017198356A1 (fr) * 2016-05-18 2017-11-23 Qinetiq Limited Configurations d'entraînement pour véhicules à direction différentielle

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IL299983A (en) 2023-03-01
CA3187550A1 (fr) 2022-02-03
EP4188773A1 (fr) 2023-06-07
KR20230042705A (ko) 2023-03-29

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