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US 6,003,395 AGranted
Actuating apparatus for automated constituents of power trains in motor vehicles
AssigneeLuK Getriebe-Systeme GmbH
InventorsAndreas Rogg, Andreas Deimel
Life of this patent
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AssigneeLuK Getriebe-Systeme GmbH
InventorsAndreas Rogg, Andreas Deimel
Estimating the term…
A power train for use in a motor vehicle has a prime mover (such as a combustion engine), an automated gearbox which transmits torque to the wheels of the vehicle, a friction clutch between the prime mover and the gearbox, a computerized control unit which receives signals from several sensors, and one or more actuators which operate the clutch and/or the gearbox in response to signals from the control unit. The actuator for selecting the gear ratio of the gearbox and for shifting the gearbox into and from selected gears employs two transmissions each of which has a worm gearing receiving torque from a discrete electric motor of the actuator and a spur gearing which transmits motion from the respective worm gearing to a mobile component of the gearbox. The connection between the worm and spur gearings in at least one of the transmissions can comprise a damper cooperating with one or more sensors serving to transmit signals to the control unit.
In a motor vehicle, a power train comprising a prime mover, an automatically operable gearbox having a plurality of gear ratios, means for transmitting torque between said prime mover and said gearbox, and means for operating said gearbox including a signal receiving and signal transmitting control unit, monitoring means including at least one sensor arranged to transmit signals to said control unit, and actuating means including at least one actuator responsive to signals from said control unit to select gear ratios and to shift the gearbox into selected gear ratios, said at least one actuator including first and second driving units, a first transmission arranged to transmit motion from said first driving unit to a gear ratio selecting first component of said gearbox, and a second transmission interposed between said second driving unit and a second component forming part of and arranged to shift said gearbox into the gear ratio selected by said first component, at least one of said transmissions comprising at least two substantially disc-shaped rotary elements movable relative to each other and torque-transmitting energy storing means disposed in windows provided in said substantially disc-shaped rotary elements.
In a motor vehicle, a power train comprising a prime mover, an automatically operable gearbox having a plurality of gear ratios, means for transmitting torque between said prime mover and said gearbox, and means for operating said gearbox including a signal receiving and signal transmitting control unit, monitoring means including at least one sensor arranged to transmit signals to said control unit, and actuating means including at least one actuator responsive to signals from said control unit to select gear ratios and to shift the gearbox into selected gear ratios, said at least one actuator including first and second driving units, a first transmission including a first worm gearing and arranged to transmit axial motion from said first driving unit to a gear ratio selecting axially movable first shaft of said gearbox, and a second transmission including a second worm gearing and interposed between said second driving unit and a rotary second shaft forming part of and arranged to shift said gearbox into the gear ratio selected by said axially movable first shaft.
In a motor vehicle, a power train comprising a prime mover, a gearbox device operable to furnish a plurality of gear ratios, a torque transmitting device operable to transmit a variable torque between said prime mover and said gearbox device, and means for operating at least one of said devices including a signal receiving and signal transmitting control unit, monitoring means for transmitting signals to said control unit, and actuating means including at least one actuator responsive to signals from said control unit to operate at least one component of said at least one device, a driving unit, and a transmission between said driving unit and said at least one component, said transmission comprising at least two substantially disc-shaped rotary elements movable relative to each other, torque-transmitting energy storing means interposed between said elements, substantially tooth-shaped projections provided on at least one of said elements, and at least one velocity sensor arranged to monitor the movements of said projections.
In a motor vehicle, a power train comprising a signal receiving and signal transmitting control unit, an actuator responsive to signals from said control unit and including at least one driving unit and a transmission between said at least one driving unit and at least one mobile component of the power train, said transmission comprising at least two substantially disc-shaped elements disposed in a power flow from said at least one driving unit to said at least one component and being rotatable with and relative to each other, said elements having peripheral zones provided with magnetized portions providing a plurality of magnetic poles spaced apart from each other in a circumferential direction of said at least two elements and establishing a magnetic field, resilient torque transmitting means arranged to oppose rotation of said at least two elements relative to each other, and at least one sensor arranged to monitor said magnetic field and to generate signals denoting at least one of a plurality of variable parameters including the rotational speed of at least one of said at least two elements and the extent of rotation of said at least two elements relative to each other.
Dependencies are inferred from the claim text.