GEARBOX DEVICE WITH COOLED DRY-SUMP AREA
The invention addresses the objective of providing a gearbox device with an actively cooled oil sump area. For this purpose a gearbox device is disclosed, including: a gearbox section 7 , the gearbox section 7 being designed as a power-transmitting device; a gearbox housing section 13 , said gearbox section 7 being arranged in a gearbox interior 16 of the gearbox housing section 13 and cooled and/or lubricated in the gearbox housing section 13 by a gearbox oil, and an oil sump area 11 for receiving the gearbox oil from the gearbox housing section 13 , the oil sump area 11 being cooled by at least one cooling channel 19 , the gearbox device having a partition wall 20 between the oil sump area 11 and the gearbox interior 16 so that these form two separate chambers, and including a passage area 21 connecting the two separate chambers fluidically to one another, so that the oil sump area 11 is constructed as a dry-sump area.
1 . A gearbox device comprising a gearbox section, formed as a power transfer device, a gearbox housing section having a gearbox interior in which the gearbox section is arranged, wherein the gearbox section is at least one of lubricated or cooled in the gearbox housing section by a gearbox oil, an oil sump area for holding gearbox oil from the gearbox housing section, the oil sump area is cooled by at least one cooling channel, a partition wall located between the oil sump area and the gearbox interior, the oil sump area and the gearbox interior form two separate chambers, and a passage area connects the two separate chambers to each other with respect to a flow of fluid, so that the oil sump area is formed as a dry sump area.
2 . The gearbox device according to claim 1 , wherein the oil sump area is formed by an oil sump housing section, and the cooling channels are arranged in the oil sump housing section.
3 . The gearbox device according to claim 2 , wherein the cooling channels are arranged on a free side of the oil sump housing section.
4 . The gearbox device according to claim 3 , wherein ribs are arranged on the oil sump housing section.
5 . The gearbox device according to claim 2 , wherein the oil sump housing section is formed as a separate part to the gearbox housing section.
6 . The gearbox device according to claim 2 , wherein the oil sump housing section and the gearbox housing section are formed as a common part.
7 . An electromotive gearbox device for providing a drive torque for a vehicle, comprising an electric motor for generating the drive torque, the electric motor defines an axial direction and a radial direction and the electric motor is arranged in a first axial section, and the gearbox device according to claim 1 , for transferring the drive torque arranged in a second axial section offset in the axial direction relative to the electric motor.
8 . The electromotive gearbox device according to claim 7 , wherein the oil sump area extends in the axial direction into the first axial section of the electric motor.
9 . The electromotive gearbox device according to claim 7 , wherein the oil sump area is formed in the first axial section as a flat channel.
10 . The electromotive gearbox device according to claim 7 , wherein the gearbox device is formed as an electric axle that has at least one driven shaft for transferring the drive torque to a wheel of the vehicle, and the electric motor is arranged coaxial to the at least one driven shaft and the oil sump area extends into a bottom area of the first section.