E-aam Driveline Systems Ab

Gm Global Technolgoy Operations, Inc.

Volvo Car Corporation

Erik Sten

Gabriel Trönnberg

Mikael Larsson

Magnus Hederstad

Mats Strandberg

Hans-Martin Duringhof

Tomas Bäfver

Peter Petrov

Thomas C Bengtsson

Gabriel Troennberg

Christian Wolrath

Erik N O Matkaselka

A gear assembly including: a drive gear adapted to be connected to an output shaft of an electric motor and being rotatable around a transmission axis; a planetary gear assembly including at least one sun gear, two or more planetary gear members rotatably supported on a carrier about respective planetary gear axes and meshing with the at least one sun gear and optionally a ring gear, an input stage connected to the drive gear, and an output stage adapted to be connected to a drive member for rotation of the drive member about the transmission axis; a clutch member adapted for slippingly connecting the ring gear with the carrier or with the drive member; and a brake member adapted for fixedly engaging a part of the planetary gear assembly with a locking part of the gear assembly.

Gear assembly for use in electric drive transmissions

A transmission arrangement for an electric vehicle. The transmission arrangement includes a differential configured to connect a first electric machine to a first and second wheel via a respective first and second driveshaft. The transmission further includes a coupled epicyclic gear configured to connect a second electric machine to the first drive shaft via the coupled epicyclic gear. The transmission arrangement includes a coupled epicyclic gear using a single planet gear which meshes with two sun gears of different size, which can be compared to instead using a stepped planet gear including two planet gear portions of different size.

Transmission arrangement with torque vectoring comprising a coupled epicyclic gear

A drive module includes a Ravigneaux gearset, first and second input shafts, shift member, and differential. The first planet gears of the gearset can engage the first sun gear and the second planet gears, which can engage the second sun gear. The first input shaft can rotate with the second sun gear and receives torque from a first motor. A first gear can be coupled to the carrier of the Ravigneaux gearset for rotation therewith and meshingly engages the differential input. The second input shaft receives torque from a second motor and is drivingly coupled to the differential input. When the shift member is in a first position, the shift member drivingly couples the first sun gear to a first differential output. When the shift member is in a second position, the shift member couples the first sun gear to a housing to prevent rotation of the first sun gear.

Two mode electric drive module with Ravigneaux gearset

A drive module that includes a Ravigneaux gearset, a first input shaft, first through fourth gears, and a differential assembly. The Ravigneaux gearset has a carrier, a first sun gear, a second sun gear, and a plurality of first planet gears that are journally supported by the carrier and drivingly coupled to the first and second sun gears. The first input shaft is coupled to the first sun gear for rotation therewith. The first gear is coupled to the first input shaft. The second gear is meshingly engaged to the first gear. The differential assembly has a differential input and first and second differential outputs. The differential input is coupled to the second gear for rotation therewith. The third gear is coupled to the carrier for rotation therewith. The fourth gear is coupled to the first differential output for rotation therewith and is meshingly engaged to the third gear.

Electric drive module with Ravigneaux gearset

A park lock having an actuator assembly for pivoting a pawl relative to a dog ring. The actuator assembly has a first linear actuator, a locking mechanism, a first biasing spring and a second linear actuator. The first linear actuator has a first output member that is movable along a movement axis that is parallel to a pivot axis of the pawl. The locking mechanism is configured to selectively couple the first output member and a cam for common movement along the movement axis. The first biasing spring is configured to move the cam along the movement axis relative to the first output member when the locking mechanism decouples the cam from the first output member. The second linear actuator is configured to move the cam along the movement axis and against the first biasing spring when the cam is decoupled from the first output member.

Park lock mechanism

An axle assembly with a differential assembly, a housing and a transmission. The transmission has a first and second planetary gearsets that have associated (i.e., first and second) ring gears, planet carriers and sun gears. The first planet carrier is coupled to a differential carrier of the differential assembly for common rotation. The second ring gear is non-rotatably coupled to the housing. The second planet carrier is coupled to the second differential output for common rotation. The second sun gear is coupled to the first sun gear for common rotation.

Axle assembly with torque distribution drive mechanism

An axle assembly with a motor, a differential assembly, a housing, a transmission and a reduction gearset. The transmission has a first and second planetary gearsets that have associated (i.e., first and second) ring gears, planet carriers and sun gears. The first planet carrier is coupled to a differential carrier of the differential assembly for common rotation. The second ring gear is non-rotatably coupled to the housing. The second planet carrier is coupled to the second differential output for common rotation. The second sun gear is coupled to the first sun gear for common rotation. The reduction gearset is disposed between an output shaft of the motor and the first ring gear and includes a first gear, which is coupled to the output shaft for rotation therewith, and a second gear that is coupled to the first ring gear for rotation therewith.

The present teachings provide for a torsional damper and a transmission having a torsional damper. The torsional damper can include first and second members. The first member can include a first hub, a first outer portion, and a plurality of first spokes. The first hub can be non-rotatably coupled to an input member of the transmission. The first spokes can extend radially between the first hub and the first outer portion. The first spokes can couple the first outer portion to the first hub. The second member can include a second hub and a second outer portion. The second hub can be non-rotatably coupled to an output member of the transmission. The second outer portion can be radially outward of the second hub and can be fixedly coupled to the second hub and to the first outer portion.

Transmission with torsional damper

The present teachings provide for a transmission including a planetary gear set and a first displacement device. The planetary gear set can include a sun gear, ring gear, planet carrier, first planet gear and second planet gear. The sun gear, ring gear, and planet carrier can be disposed about a first axis. The first planet gear can meshingly engage with the sun gear and the ring gear, and can be coupled to the planet carrier for rotation relative thereto about a second axis. The first planet gear can be axially slidable relative to the planet carrier. The second planet gear can meshingly engage with the sun gear and the ring gear, and can be coupled to the planet carrier for rotation relative thereto about a third axis. The first displacement device can be configured to displace the first planet gear axially relative to the second planet gear.

Planetary gear mechanism with reduced gear lash

A drive module that includes an electric motor, an input pinion driven by the electric motor, a transmission driven by the input pinion, a planetary differential assembly and first and second axle shafts. The transmission has a first transmission output member. The planetary differential assembly has an input ring gear, a first output sun gear and a second output sun gear. The first and second output sun gears have different pitch diameters, different modules and a common quantity of sun gear teeth. The planetary differential assembly is configured to provide a 50-50 torque split between the first and second output sun gears. The first axle shaft is coupled to the first output sun gear for rotation therewith. The second axle shaft is coupled to the second output sun gear for rotation therewith.

Drive module with compact differential mechanism

A drive module with a housing, an electric motor, a coolant sump, an inlet pipe and a transmission and differential assembly that is driven by the electric motor to drive a pair of output members. The electric motor is coupled to the housing and has a stator, which is fixedly coupled to the housing, and a rotor that is rotatable within the stator. The rotor has a coolant passage, which extends parallel to a rotational axis of the rotor, and a nozzle passage that intersects the coolant passage and extends radially outwardly therefrom. The coolant sump is configured to hold a coolant fluid. The inlet pipe is in fluid communication with the coolant sump and is received into the coolant passage. The inlet pipe is configured to feed the coolant fluid from the coolant sump into the coolant passage. The coolant fluid is gravity fed into the inlet pipe.

Drive module with spray cooling of electric motor

A coupling device and a coupling mechanism is provided for selectively coupling of an electric drive to a wheel axle of a vehicle. The coupling device includes, but is not limited to an output gear connected to the wheel axle, an input gear connected to the electric motor. A synchronizer is adapted to contactlessly minimize a difference of the input gear's and the output gear's angular velocity below a predefined threshold, and a synchronizing member is adapted to frictionally engage with the input gear and/or with the output gear when the difference in angular velocity of input gear and output gear is below the predefined threshold.

Coupling and synchronizing device for electric drive modules

A drive module with a planetary transmission that includes a transmission housing, a first ring gear and a second ring gear. The first ring gear is rotatably mounted in the transmission housing, the second ring gear is non-rotatably mounted in the transmission housing, and the first ring gear is supported on the second ring gear to thereby align a central axis of the first ring gear to a central axis of the second ring gear.

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Trollhättan, Sweden

Erik Sten