Volvo Truck Corporation

Renault Trucks

Volvo Lastvagnar Ab

Thomas Barillot

Jean Terrat

Serge Vananty

Vincent Brolles

Bertrand Cauvin

Chris Clezardin

Michael Joliet

Yann Depoorter

Grégory Bouteille

Jan Hendriks

Nicolas Granottier

A method of oil pre-conditioning for an electric powertrain for a vehicle configured to provide electric propulsion of the vehicle, said electric powertrain comprising the first electric motor being linked to the first gear module, a secondary shaft being linked to the second gear module, the second electric motor being linked to the third gear module through a motor shaft, the differential being shared by both electric motors, The electric powertrain is surrounded by an oil. The method includes the steps of selecting an oil pre-conditioning configuration wherein the secondary shaft does not rotate and at least one of the first electric motor or the second electric motor rotates while the other is in driving mode leading to the heating of the oil to reach a threshold temperature and applying the selected oil pre-conditioning configuration.

Method of oil pre-conditioning for an electric powertrain of a vehicle

A powertrain assembly for an industrial vehicle includes an axle housing receiving an output wheel, a geartrain including a first input shaft, a second input shaft, an output shaft engaged with the output wheel and an oil circulation pump configured to supply oil to gears of the geartrain. The powertrain assembly also includes a first electric motor including a rotor coupled to the first input shaft of the geartrain and the rotor being supported by a first sealing and bearing assembly. The powertrain assembly also includes a second electric motor including a rotor coupled to the second input shaft of the geartrain. The powertrain assembly also includes a first oil supply channel configured to supply some of the oil flow of the oil circulation pump to the first sealing and bearing assembly.

Powertrain assembly for an industrial vehicle

A kit of parts for configuring an electric powertrain for a vehicle, electric powertrains for a vehicle and a method for configuring an electric powertrain for a vehicle, the invention applies to an electric powertrain integrated into a vehicle axle. Such electric axle (or 'E-axle') is a front or rear axle that includes an axle body (or “housing”) adapted to receive a powertrain, which is arranged to provide torque to the wheels of the axle.

Electric powertrain for a vehicle

An assembly for a differential unit of a vehicle, including a differential housing having a longitudinal axis, the differential housing being provided with a plurality of through-holes formed therein; a differential side gear configured to be connected to a drive shaft capable of being connected to a wheel of a vehicle, the differential side gear being located inside the differential housing and being rotatably mounted relative to the differential housing around the longitudinal axis; and a blocking system for blocking the differential unit operation, including a blocking member movable between a released position and a blocking position, and an actuation system for moving the blocking member between the released and blocking positions.

Assembly for a differential unit of a vehicle

The invention relates to a powertrain system () for driving at least one wheel of a vehicle, comprising: —a motor () having an output shaft (); —a transmission system between the motor () and a drive shaft () connected to said wheel, the transmission system comprising two epicyclic gear trains () each including the following components: a ring, a sun, a planet carrier and planet gears, wherein: —a first epicyclic gear train () has a first axis (A), a component forming a first input component () connected to the motor output shaft (), and a component forming a first output component (); —a second epicyclic gear train () has a second axis (A) parallel to the first axis (A), a component forming a second input component () meshing with the first output component (), and a component forming a second output component () configured to be connected to the drive shaft ().

Powertrain system for driving at least one wheel of a vehicle

An electric powertrain for a vehicle provides electric propulsion to the vehicle. The electric powertrain includes a first electric motor linked to a first gear module through a motor shaft, said first gear module including a primary shaft on which are arranged a first primary gear and a second primary gear, a second gear module including a secondary shaft on which are arranged a first secondary gear that is meshing with the second primary gear, at least one countershaft on which are arranged a first quaternary gear and a second quaternary gear, a coupling member arranged at the first extremity of the primary shaft.

A gearbox for a vehicle includes a primary shaft configured to rotate about a first axis, a distribution gear, a transmission gear arranged around the primary shaft, an auxiliary shaft configured to rotate around a second axis, an auxiliary output gear and an auxiliary transmission gear arranged around the auxiliary shaft, an output gear arranged around the primary shaft for transmitting a power out of the gearbox, and a gear shift system slidable between at least two positions. The gear shift system is configured to rotationally engage the distribution gear and the output gear for transmitting the power directly from the primary shaft to the output gear, or the distribution gear and the transmission gear for transmitting the power indirectly from the primary shaft to the output gear through the auxiliary shaft.

Transmission gearbox for truck electric drive axle

A gearbox for an electric powertrain, said gearbox comprising a primary shaft, on which are arranged a first primary gear which is fixed in rotation with respect to the primary shaft, a second primary gear and a third primary gear and a secondary shaft, on which are arranged a first secondary gear that is meshing with the first primary gear and that is by default free to rotate around the secondary shaft, a second secondary gear meshing with the second primary gear and a third secondary gear meshing with the third primary gear. The gearbox further includes a first coupling member, which is arranged along the secondary shaft and which can be moved between an engaged position, in which it couples the first secondary gear in rotation with the secondary shaft and a neutral position.

Gearbox for an electric powertrain

An axle for connecting two wheels of a vehicle is provided, The axle includes a retarder configured to generate a braking force.

Axle for a vehicle

an electric powertrain integrated into a vehicle axle. Such electric axle (or 'E-axle') is a front or rear axle that includes an axle body (or “housing”) adapted to receive a powertrain, which is arranged to provide torque to the wheels of the axle. The “E-Axle” is a compact and economical electric drive solution for battery electric vehicles, fuel cells and hybrid applications. The electric motor(s), electronics and transmission are combined in a compact unit that directly drives the wheels provided at the longitudinal ends of the axle.

An axle system () for a vehicle comprises: —a differential unit () including a first housing () and a second housing () which rotationally receives at least part of said first housing; —at least one drive shaft () having one end configured to be connected to a wheel of the vehicle and one end connected to the differential unit () and rotationally received in the first housing (), the drive shaft () including at least one joint () connecting two portions () of the drive shaft () to transmit rotary motion between said portions; —a first bearing () secured around the drive shaft (), placed between the drive shaft and the first housing (), having an outer diameter (D) smaller than the radial dimension (D) of the joint (); —a second bearing () placed between the first housing () and the second housing (); —at least one tightening member () to axially lock the first bearing outer ring () relative to the first housing (). The tightening member comprises at least one manoeuvring portion () which is arranged in an offset relation relative to the joint (), when looking axially towards the differential unit (), so that the tightening member manoeuvring portion () is visible and accessible, at least during a tightening phase of an axle system mounting process.

Axle system for a vehicle and mounting process

The invention relates to a vehicle axle, comprising: —a differential; —a powertrain, comprising a first electric motor (EM) and a second electric motor (EM); —a first transmission element between the first electric motor and said differential, this first transmission element comprising a variable transmission ratio; —a second transmission element between the second electric motor and said differential; wherein the second electric motor is controlled so as to provide its maximum power during gear changes of the first transmission element, so as to compensate at least partially for the power loss inherent in the gear change.

Vehicle axle, in particular a motorized axle, on which several electric motors are mounted

The invention relates to a powertrain module () comprising: &#x2014;a powertrain system for driving at least one wheel of a vehicle, the powertrain system comprising: &#x2014;a motor () having an output shaft; &#x2014;and a transmission system between the motor () and a drive shaft () connected to said wheel; &#x2014;and a casing () which houses the transmission system. The powertrain module () comprises connecting means () for cooperating with the connecting means () of an identical powertrain module () arranged in a facing relationship with said powertrain module (), for mechanically connecting said two powertrain modules ().

Powertrain module

The invention relates to an assembly for a differential unit of a vehicle, the assembly comprising: &#x2014;a first housing portion () designed to be assembled with a second housing portion for forming a differential carrier housing; &#x2014;a first and a second supporting devices (), each comprising a main portion () having substantially the shape of a ring and a base portion () attached to the first housing portion () so that the main portions () of the first and second supporting devices () are substantially coaxial along a longitudinal direction (X), the first and second supporting devices being configured to support, in use, a system comprising a crown wheel () and a differential housing () containing a differential, the system having two end portions each including a bearing which has an inner ring () mounted on the differential housing (), an outer ring configured to be mounted in the main portion () of one of the supporting devices (), and rolling elements. The first housing portion (), the first supporting device () and the second supporting device () are made as a single piece. Moreover, the main portion () of at least one supporting device () comprises a notch () for inserting at least part of a corresponding end portion of the system (), the notch () opening: &#x2014;in a radial direction (Y), which is orthogonal to the longitudinal direction (X); &#x2014;and in the longitudinal direction (X), towards the opposite supporting device ().

A supporting device to be secured in a housing of an axle unit includes a main portion in the shape of a ring having a longitudinal axis and forming a circular opening intended to receive an outer ring of a bearing which, in use, is mounted on a differential housing. The supporting device further includes a collector capable of collecting lubricant projected inside the housing by at least one rotating part, in use, the collector including an outlet port for allowing lubricant to flow towards the longitudinal axis.

Growing community of inventors

Mornant, France

Thomas Barillot