Electric drivetrain for motor vehicle
AssigneeValeo Embrayages
InventorsHerve MAUREL, Guillaume BOIDIN, Pierre CHOLVY, Gregory FOUCART, Norberto TERMENON, Cyrille CORNIGLION
Life of this patent
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Abstract
An electric drivetrain including an electric machine and at least one output pinion intended to be connected to an axle differential, and at least one speed reduction device including a first gear train and a second gear train intended to drive the output pinion in rotation in a first rotational direction or a second rotational direction.
Claims16
An electric drivetrain for a vehicle comprising at least one electric machine, at least one output pinion configured to be connected to an axle differential of the vehicle, and at least one speed reduction device, wherein the electric drivetrain comprises at least one torque converter arranged between the electric machine and said at least one output pinion, wherein the speed reduction device comprises at least a first gear train and a second gear train, the first gear train generating a movement of the or the at least one output pinion in a first rotational direction, and the second gear train generating a movement of the at least one output pinion in a second rotational direction opposite the first rotational direction.
A method for controlling an electric drivetrain of a vehicle, the electric drivetrain comprising an electric machine, at least one output pinion connected to an axle differential and able to drive the axle differential in a first rotational direction or in a second rotational direction opposite the first rotational direction, a torque converter arranged in the torque transmission pathway between the electric machine and said at least one output pinion and able to drive said at least one output pinion in both rotational directions, wherein the torque converter comprises a primary element and a secondary element which is driven in rotation by the primary element under the effect of a fluid projected by the primary element, the torque converter comprising an element for direct connection of the primary element to the secondary element, wherein the method comprises a step of closing the direct connection element when the axle differential is driven in the second rotational direction, the second rotational direction being associated with reverse gear of the vehicle, or when a torque is transmitted from the axle differential to the electric machine.
Dependencies are inferred from the claim text.