E-aam Driveline Systems Ab

Gm Global Technolgoy Operations, Inc.

Gabriel Trönnberg

Erik Sten

Emil K Gavling

Mats Strandberg

Mikael Larsson

Hans-Martin Duringhof

Henric J Gieryluk

Martin Persson

Lars U Larsson

Thomas C Bengtsson

Mathias Petersson

Phillip A Gebel

Miguel Garcia Cabrera

Oscar Nyberg

Thomas Jegebris

Samuel Alfredsson

An electric drive unit with a housing, a motor coupled to the housing and having a motor shaft, a differential assembly, a pair of output shafts, and a transmission that transmits rotary power between the motor shaft and the differential input member. The differential assembly and the transmission are received in the housing. The differential assembly has a differential input member and a differential a pair of differential output members that are rotatably coupled to the output shafts. The transmission has a transmission output member that is coupled to the differential input member for rotation therewith. An optional mechanical input assembly can be housed in the housing and can have a ring gear, which can be coupled to the differential input member for rotation therewith, and an input pinon that can be meshingly engaged to the ring gear.

Electric drive unit

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 transmission can include a first gear, a shaft, a second gear, a third gear and a first biasing member. The first gear can be disposed about a first rotational axis. The shaft can be disposed about a second rotational axis. The second gear can be fixedly coupled to the shaft and can be configured to meshingly engage the first gear. The third gear can be non-rotatably coupled to the shaft. The third gear can be axially slidable along the shaft and can be configured to meshingly engage the first gear. The first biasing member can bias the third gear axially away from the second gear and into engagement with the first gear.

Transmission with pinion for reduced backlash

The present teachings provide a method for controlling transmission of power to a set of wheels of a vehicle. The method can include providing a drive module configured to provide an amount of drive torque for powering the set of vehicle wheels. The method can include determining a yaw rate of the vehicle and a first set of vehicle parameters. The method can include determining a reference yaw rate of the vehicle based on the first set of vehicle parameters. The method can include calculating a yaw rate error based on the yaw rate and the reference yaw rate. The method can include reducing the amount of drive torque provided by the drive module to the vehicle wheels based on the yaw rate error.

Method for operating an electric drive module

An electric drive module and a method for switching a drive module between a torque vectoring and at least one propulsion mode are provided. A controller can switch the drive module to the torque vectoring mode when a first set of conditions is met and can switch to one of the propulsion modes when either a second or a third set of conditions is met. The first set can include: torque requested by an operator is less than or equal to a first demand threshold; and a vehicle velocity is greater than or equal to a first velocity threshold. The second set can include: the vehicle velocity is less than a second velocity threshold; and a vehicle lateral instability is less than or equal to an instability threshold. The third set can include: the torque requested by the operator of the vehicle is greater than a second demand threshold.

Electric drive module and method for operating an electric drive module

A park lock having a cam that is movable along a movement axis to cause corresponding pivotable movement of a pawl relative to a dog ring. The park lock mechanism includes a first actuator assembly and a second actuator assembly. The first actuator assembly has a first output member on which the cam is slidably mounted. The second actuator assembly includes a detent mechanism, which is configured to resist movement of the cam relative to the first output member, and a biasing element that is configured to store energy. Operation of the detent mechanism to permit movement of the cam relative to the first output member employs the stored energy in the biasing element to translate the cam on the first output member.

Park lock mechanism

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.

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Trollhättan, Sweden

Gabriel Trönnberg