WBH Wachenhausen Patentanwälte PartG mbB

The present invention relates to a lubrication system (90) for a gearing (10) of a vehicle (1). The lubrication system (90) comprises a tank (50) for storing lubricant and a sump (60) for receiving lubricant from the gearing (10). The lubrication system (90) also comprises a lubrication section (40) with a gearing lubrication branch (42; 44) for supplying lubricant to at least one element of the gearing (10) for lubrication. The lubrication system (90) further comprises an electric pump (20) for selectively supplying lubricant to the lubrication section (40). Furthermore, the lubrication system (90) comprises a control valve (22) for selectively fluidly connecting the electric pump (20) to the sump (60) or the tank (50) for drawing lubricant. The present invention also relates to a method for controlling a lubrication system, a control unit, a gearing and a vehicle.

The invention relates to a gearing (10) for a vehicle (1). The gearing (10) comprises a rotating element (6), a lubricant supply (60), a housing portion (13), a lubrication path (20) and a planetary gear set (70) with multiple planetary gear elements (71, 72, 73, 74, 75, 76). The gearing (10) is configured to supply lubricant from the lubricant supply (60) via the lubrication path (20) through the housing portion (13) to the rotating element (6). The gearing (10) is also configured to supply lubricant from the rotating element (6) via the lubrication path (20) to one of the planetary gear elements (75; 76) for lubrication independently from any rotation of any of the planetary gear elements (71, 72, 73, 74, 75, 76) of the planetary gear set (70). The invention also relates to a vehicle (1) with the gearing (10).

The invention relates to a drive axle (2) for a vehicle (1). The drive axle comprises a drive shaft (12), a two-speed transmission (60), and a gearing (3). The gearing comprises an input shaft (4), a first output shaft (5), a second output shaft (6), a first planetary gear set (70) and a second planetary gear set (80). The two-speed transmission (60) comprises a first switching element (61), a second switching element (62) and a third planetary gear set (90). The invention also relates to a vehicle with the drive axle (2).

The invention relates to a gearing (10) for a vehicle (1). The gearing comprises a rotating element (6) and a planetary gear set (70) with multiple planetary gear elements (71, 72, 73, 74, 75, 76). The gearing comprises a lubricant supply (60), a housing portion (12), a first lubrication path (20) and a second lubrication path (40). The gearing is configured to supply lubricant for lubrication independently from any rotation of any of the planetary gear elements of the planetary gear set. The lubricant is supplied from the lubricant supply via the first lubrication path (20) through the housing portion (12) to the rotating element (6). The lubricant is supplied from the rotating element (6) via the second lubrication path (40) to one of the planetary gear elements (71) formed as a sun gear. The invention also relates to a vehicle with the gearing.

The invention relates to a drive axle (2) for a vehicle (1). The drive axle comprises a drive shaft (12), a two-speed transmission (60), and a gearing (3). The gearing comprises an input shaft (4), a first output shaft (5), a second output shaft (6), a first planetary gear set (70) and a second planetary gear set (80). The two-speed transmission (60) comprises a first switching element (61), a second switching element (62) and a third planetary gear set (90). The invention also relates to a vehicle with the drive axle (2).

The invention relates to an electrical drive axle (2) for a vehicle (1). The electrical drive axle (2) comprises an electrical motor (10) with a stator (13) having an axial direction (90). The electrical drive axle (2) also comprises a cooling fluid supply and an ejecting device (29; 31). The ejecting device (29; 31) is configured to eject cooling fluid in the axial direction (90) of the stator (13) onto the stator (13) for cooling the stator (13). The invention also relates to a vehicle (1) with the electrical drive axle (2).

The invention relates to a gearing for a vehicle. The gearing comprises two planetary gear sets and a driven shaft for receiving power from a driving unit. An input shaft is configured to receive power from the driven shaft. A first planetary gear set is connected to a first output shaft for outputting power to a first drive shaft. The first planetary gear set is connected to a second planetary gear set. An element of the second planetary gear set is non-rotatably connected to a stationary member. The second planetary gear set is connected to a second output shaft for outputting power to a second drive shaft. A reduction unit is arranged in a power flow from the driving unit to the first and second drive shafts for converting an input rotational speed to a lower output rotational speed.

The present disclosure relates to an electric motor arrangement comprising an electric motor (7) comprising a stator (9) and a rotor (10), a shaft (4), a first bearing (12), a second bearing (13) and a conducting element (14). The rotor (10) is mechanically operatively coupled to the shaft (4), the first bearing (12) and the second bearing (13) are mounted on the shaft (4), and the conducting element (14) is in electrical contact with the shaft (4). The first bearing (12) has a lower electrical conductivity than the second bearing (13) and the conducting element (14) has a higher electrical conductivity than the second bearing (13). The present disclosure further relates to a drive system (3) for a vehicle (1) comprising such an electric motor arrangement. The present disclosure further relates to a vehicle (1) comprising such an electric motor arrangement or such a drive system (3).

The invention relates to an electrical drive axle (2) for a vehicle (1). The electrical drive axle (2) comprises an electrical motor (10) with a stator (13) having a radial direction (91). The electrical drive axle (2) also comprises a cooling fluid supply and an ejecting device (29; 31). The ejecting device (29; 31) is configured to eject cooling fluid in the radial direction (91) of the stator (13) onto the stator (13) for cooling the stator (13). The invention also relates to a vehicle (1) with the electrical drive axle (2).

The invention relates to an electrical drive axle (2) for a vehicle (1). The electrical drive axle (2) comprises an electrical motor (10) and a gearing (3). The electrical motor (10) comprises a rotor (11) mechanically connected to a rotor shaft (12). The gearing (3) comprises an input shaft (4) and an output shaft (5). The output shaft (5) is arranged coaxially to the rotor shaft (12). The input shaft (4) is operatively connected to the rotor shaft (12). The output shaft (5) is configured to receive cooling fluid. The output shaft (5) is also configured to enable at least a part of the received cooling fluid to flow from the output shaft (5) to the rotor shaft (12) for cooling the rotor (11). The invention also relates to a vehicle (1) with the electrical drive axle (2).