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GB2477580A - Electric shift and energy recovery gearbox - Google Patents

Electric shift and energy recovery gearbox Download PDF

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Publication number
GB2477580A
GB2477580A GB1006209A GB201006209A GB2477580A GB 2477580 A GB2477580 A GB 2477580A GB 1006209 A GB1006209 A GB 1006209A GB 201006209 A GB201006209 A GB 201006209A GB 2477580 A GB2477580 A GB 2477580A
Authority
GB
United Kingdom
Prior art keywords
gear
gearbox
torque
ratio
casing
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
GB1006209A
Other versions
GB201006209D0 (en
Inventor
Keith Gerrard
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB201006209D0 publication Critical patent/GB201006209D0/en
Publication of GB2477580A publication Critical patent/GB2477580A/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines
    • 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 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 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 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
    • 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 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 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
    • B60K6/48—Parallel type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines
    • 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 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 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 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
    • B60K6/365—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 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 with the gears 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
    • 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
    • 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 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/50—Architecture of the driveline characterised by arrangement or kind of transmission units
    • B60K6/54—Transmission for changing ratio
    • B60K6/547—Transmission for changing ratio the transmission being a stepped gearing
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D21/00—Systems comprising a plurality of actuated clutches
    • F16D21/02—Systems comprising a plurality of actuated clutches for interconnecting three or more shafts or other transmission members in different ways
    • F16D21/04—Systems comprising a plurality of actuated clutches for interconnecting three or more shafts or other transmission members in different ways with a shaft carrying a number of rotatable transmission members, e.g. gears, each of which can be connected to the shaft by a clutching member or members between the shaft and the hub of the transmission member
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D27/00—Magnetically- or electrically- actuated clutches; Control or electric circuits therefor
    • F16D27/10—Magnetically- or electrically- actuated clutches; Control or electric circuits therefor with an electromagnet not rotating with a clutching member, i.e. without collecting rings
    • F16D27/102—Magnetically- or electrically- actuated clutches; Control or electric circuits therefor with an electromagnet not rotating with a clutching member, i.e. without collecting rings with radially movable clutching members
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D27/00—Magnetically- or electrically- actuated clutches; Control or electric circuits therefor
    • F16D27/12—Clutch systems with a plurality of electro-magnetically-actuated clutches
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/44—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion
    • F16H3/72—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion with a secondary drive, e.g. regulating motor, in order to vary speed continuously
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/44—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion
    • F16H3/72—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion with a secondary drive, e.g. regulating motor, in order to vary speed continuously
    • F16H3/727—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion with a secondary drive, e.g. regulating motor, in order to vary speed continuously with at least two dynamo electric machines for creating an electric power path inside the gearing, e.g. using generator and motor for a variable power torque path
    • F16H3/728—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion with a secondary drive, e.g. regulating motor, in order to vary speed continuously with at least two dynamo electric machines for creating an electric power path inside the gearing, e.g. using generator and motor for a variable power torque path with means to change ratio in the mechanical 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
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/02—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used
    • F16H61/0202—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric
    • 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
    • F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
    • F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
    • F16H63/30—Constructional features of the final output mechanisms
    • F16H63/304—Constructional features of the final output mechanisms the final output mechanisms comprising elements moved by electrical or magnetic 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
    • F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
    • F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
    • F16H63/30—Constructional features of the final output mechanisms
    • F16H63/304—Constructional features of the final output mechanisms the final output mechanisms comprising elements moved by electrical or magnetic force
    • F16H2063/3046—Constructional features of the final output mechanisms the final output mechanisms comprising elements moved by electrical or magnetic force using electromagnetic clutch for coupling gear wheel to shaft
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/62—Hybrid vehicles

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Structure Of Transmissions (AREA)

Abstract

A gearbox unit, for a hybrid vehicle, includes integral electric engine components 1-7 which are used for operating gear changes and for recovering electric energy from and applying electric energy to a gear train. The gearbox comprises planetary gear sets 8, 9, 10 which are engaged by electronic lockers 13 controlled by electro magnetic energy. The lockers 13 engage slots in a casing (16, fig 2) or slots in a static support tube 18 which is an extension of the casing (16). Gear changes between the gear sets 8, 9, 10 is achieved by unlocking an engaged gear outer component from the casing (16), accelerating the outer component using electro magnetic energy to bring the gear set to a common rotational speed and locking another gear set. Also claimed is electro magnetic operation of the gear set, a method of torque application, a gearbox without any relative gear movement in gear sets, a hybrid gearbox unit and a racing car gearbox for a kinetic energy recovery system (KERS).

Description

Description
This invention relates to an improved method of converting input torque to output torque in a multi stepped gearbox and recovering energy from and applying energy to a power train.
The unit can be part of a conventional power train, a hybrid power train a kinetic energy recovery system or a full electric power train.
Conventional hybrid power train systems and kinetic energy recovery systems use a gearbox to transfer torque from the main input source, which is usually an internal combustion engine, to the output, torque from the gearbox goes to the drive axle or axles and additional gearing, transmissions, shafts and clutches connect a variety of electric engines and torque multipliers to this primary power train to harvest and apply electrical energy. The electric shift energy recovery unit (ESERU) here described needs no additional external components; with an electric control unit and an electric energy storage device it comprises a complete hybrid system or a kinetic energy recovery system.
The ESERU is a multi ratio stepped gearbox, suitable for vehicles and other torque transfer devices, comprising a number of gear sets Figure: 1 (1-6), which can be selected independently or in combination, gear changes are made using electro magnetic energy eliminating the need for mechanical, hydraulic or pneumatic clutches and synchronizing assemblies.
The outer component of each gear set operates as a rotating part of an electric engine, using magnets embedded in the outer circumference of the gear set components (1 -6) and the static parts of the electric engines (7) which are built into the gearbox casing (16). Electric energy is used to accelerate, decelerate and position components in the gear sets, to allow them to be unlocked or locked with electronic lockers (13), to facilitate the conversion of input rpm to output rpm, controlling the timing of the application of electrical energy and the force, produces a constantly variable and efficient transfer of torque from input to output of each gear set, giving a true seamless shift between a ratio of 1:1 of any locked gear set and the mechanical ratio of the gear set unlocked.
The electrical engines recover electric energy to storage from the power train during deceleration and apply electric energy from storage to the power train during acceleration and cruise and/or when electrical power transfer is demanded, eliminating the need for extra gearing between the electric engines and the power train iii hybrid, KERS or electric applications and supply the required electrical power for gear changes in all configurations including conventional or full electric application.
Initial transfer of torque, to achieve propulsion and establish inertia in either rotational direction of the single output shaft (14), is achieved by applying electric energy to the electric engines of the gearbox, if another external engine is required to apply torque to the power train after inertia is established, the outer component of the first gear set (1), is brought to stationary using electro magnetic energy and electronic lockers (13), lock this component to the gearbox casing (16), the external engine is then capable of applying torque through this gear ratio to output.
Gear changes between gear sets is achieved by unlocking the engaged gear outer component from the gearbox casing (16), accelerating the outer component using electro magnetic energy, established component inertia and control over the input torque source, to bring the complete gear set to a common shaft rotational speed, locking this gear set, unlocking the next selected gear set, decelerating the outer component of this gear set to stationary, using electro magnetic energy and locking this component to the gearbox casing (16). A wide range of gear ratios and ratio combinations is made available using this operating method and torque application to the power train from both the gearbox electrical engines and an external engine is made available to output over a wide and efficient range.
The ESERU gear train comprises a variable number of planetary gear sets Example: Figure 1 (1 -6), any one of the three components comprising the gear sets (8,9,10), can be chosen for torque input, any one for torque output and the remaining component locked stationary, giving a wide range of available ratios from a wide range of possible configurations.
The casing lockers engage with slots (18) on the outside of each gear set and the lockers within the gear train engage with corresponding slots in adjacent components. When a sun gear needs to be locked to the casing to achieve a gear ratio, a locker within the static support tube (18) is used.
The static tube is an extension of the gear case (1 6) and forms the main gear train support.
Example of engaged gear set Figure 1: Input from engine (12) through input shaft (ii) and first gear sun gear (10), drives planet gears (9), which are forced to walk' around crown wheel (8), which is locked to the gear casing Figure 2 (16) by lockers (13), the output of the first gear planet gears (9) drives the input sun gear of the second gear sun gear (17) via the first gear planet carrier.
When not selected for use, the gear sets are locked together as one unit with no relative gear motion, giving zero gear torque loss at a ratio of 1:1 input to output, in direct top gear the complete gear train is locked at a ratio of 1:1 input to output, producing no gear torque loss from the complete gear train, the torque output shaft Figure 1 (14) drives the vehicle through a drive axle (15), or other torque transfer device in all gear combinations.
A sliding locker Figure 3 (19) is provided in most configurations, to allow the selection of disengaged gear train neutral.

Claims (7)

  1. CLAIM1. A stepped ratio gearbox without hydraulic, pneumatic or mechanically operated clutches, synchronisers or ratio changing mechanism.
  2. 2. An energy recovery and application unit, being an integral part of a gearbox that eliminates the need for additional gear sets and the associated control and installation systems.
  3. 3. The electro magnetic operation of a gear set producing a seamless constantly variable change of gear ratios, while maintaining a smooth constant transfer of torque from input to output.
  4. 4. A method of torque application that eliminates the need for a direct engagement clutch, by establishing the vehicle or output device inertia prior to connecting a separate torque input device.
  5. 5. A gearbox without any relative gear movement in gear sets not ratio selected and in the whole gear train when direct top gear 1:1 ratio is selected, resulting in very low torque loss in use.
  6. 6. A hybrid gearbox unit that can be configured to replace most current conventional vehicle transmissions to form the basis of a more efficient, compact and lighter hybrid system.
  7. 7. A racing car gearbox including integral energy recovery and apply components, without the need for external gear units or electrical engines, making the unit lighter, more compact and more efficient for KERS applications and installations.
GB1006209A 2010-02-08 2010-04-14 Electric shift and energy recovery gearbox Withdrawn GB2477580A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GBGB1001980.0A GB201001980D0 (en) 2010-02-08 2010-02-08 Electric shift energy recovery unit

Publications (2)

Publication Number Publication Date
GB201006209D0 GB201006209D0 (en) 2010-06-02
GB2477580A true GB2477580A (en) 2011-08-10

Family

ID=42082607

Family Applications (2)

Application Number Title Priority Date Filing Date
GBGB1001980.0A Ceased GB201001980D0 (en) 2010-02-08 2010-02-08 Electric shift energy recovery unit
GB1006209A Withdrawn GB2477580A (en) 2010-02-08 2010-04-14 Electric shift and energy recovery gearbox

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GBGB1001980.0A Ceased GB201001980D0 (en) 2010-02-08 2010-02-08 Electric shift energy recovery unit

Country Status (1)

Country Link
GB (2) GB201001980D0 (en)

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1049714B (en) * 1956-03-17 1959-01-29 Getrag Getriebe- und Zahnradfabrik GmbH, Ludwigsburg (Wurtt) Draw key gear change, in particular for motor vehicles
GB979130A (en) * 1961-01-18 1965-01-01 Enakichi Hayasaka A stepless speed change torque converter
GB1103469A (en) * 1965-08-19 1968-02-14 Gen Electric Co Ltd Improvements in or relating to variable speed gear systems
US20020088291A1 (en) * 2001-01-10 2002-07-11 Bowen Thomas C. Twin clutch automated transmission with integrated transfer case
WO2003047897A1 (en) * 2001-12-05 2003-06-12 Drivetec (Uk) Limited Automotive vehicle transmission systems
WO2005068865A1 (en) * 2004-01-14 2005-07-28 The Timken Company An electro-mechanical mechanical gear selector
JP2007198493A (en) * 2006-01-26 2007-08-09 Ntn Corp Normal-reverse rotation switching device
US20070272509A1 (en) * 2006-05-24 2007-11-29 Zf Friedrichshafen Ag Electromagnetically operated unit, in particular a clutch, brake and/or lock
WO2008081893A1 (en) * 2006-12-28 2008-07-10 Honda Motor Co., Ltd. Power device
WO2008123585A1 (en) * 2007-04-04 2008-10-16 Toyota Jidosha Kabushiki Kaisha Power transmission device

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1049714B (en) * 1956-03-17 1959-01-29 Getrag Getriebe- und Zahnradfabrik GmbH, Ludwigsburg (Wurtt) Draw key gear change, in particular for motor vehicles
GB979130A (en) * 1961-01-18 1965-01-01 Enakichi Hayasaka A stepless speed change torque converter
GB1103469A (en) * 1965-08-19 1968-02-14 Gen Electric Co Ltd Improvements in or relating to variable speed gear systems
US20020088291A1 (en) * 2001-01-10 2002-07-11 Bowen Thomas C. Twin clutch automated transmission with integrated transfer case
WO2003047897A1 (en) * 2001-12-05 2003-06-12 Drivetec (Uk) Limited Automotive vehicle transmission systems
WO2005068865A1 (en) * 2004-01-14 2005-07-28 The Timken Company An electro-mechanical mechanical gear selector
JP2007198493A (en) * 2006-01-26 2007-08-09 Ntn Corp Normal-reverse rotation switching device
US20070272509A1 (en) * 2006-05-24 2007-11-29 Zf Friedrichshafen Ag Electromagnetically operated unit, in particular a clutch, brake and/or lock
WO2008081893A1 (en) * 2006-12-28 2008-07-10 Honda Motor Co., Ltd. Power device
WO2008123585A1 (en) * 2007-04-04 2008-10-16 Toyota Jidosha Kabushiki Kaisha Power transmission device

Also Published As

Publication number Publication date
GB201006209D0 (en) 2010-06-02
GB201001980D0 (en) 2010-03-24

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