A hydraulic controlling system including: a cooling and lubricating oil line and a main controlling oil line; an oil-liquid storage; a first pump, wherein an inlet of the first pump is connected to the oil-liquid storage and an outlet of the first pump is connected to the main controlling oil line; a second pump, wherein an inlet of the second pump is connected to the oil-liquid storage and an outlet of the second pump selectively communicates with the cooling and lubricating oil line or the main controlling oil line; and a gearbox-gear-shifting oil line including a gear-shifting-pressure regulating valve, a plurality of gear-shifting-flow-rate controlling valves and a plurality of gear-shifting selector valves. The gear-shifting-flow-rate controlling valves are connected to the main controlling oil line via the gear-shifting-pressure regulating valve. At least some of the gear-shifting-flow-rate controlling valves are connected to a gear-shifting executing piston via the gear-shifting selector valves.

The invention relates to a dual clutch transmission (11, 211, 411, 611), comprising a gear-change transmission (15, 215, 415, 615) for forming eight gear steps having two countershafts (29, 31, 229, 231, 429, 431, 629, 631, 829) and having a common output shaft (33, 233, 433, 633). Said dual clutch transmission is configured in such a way that all gear steps are designed as forward gears. Hereby, a double clutch (13, 213, 413,613) has two clutch packs (17, 19, 219, 417, 419, 617, 619) arranged on a central axis (23, 223, 423, 623) of the double clutch transmission. A drive input shaft (21, 221, 421, 621) of the dual clutch transmission is seated on the central axis (23, 223, 423, 623), on which drive gearwheels (41, 241, 441, 641; 43, 243, 443, 643; 45, 245, 445, 643; 47, 247, 447, 647; 49, 249, 449, 649; 51, 251, 451, 651) of the individual gear steps are seated.

A transfer case for use in a vehicle, with the vehicle including a powertrain, includes an input shaft configured to be rotatably coupled to the powertrain. The transfer case also includes a primary output shaft rotatably coupled to the input shaft, and a secondary output shaft selectively rotatably coupled to the primary output shaft. The transfer case further includes a planetary gearset disposed between and rotatably coupled to the input shaft and the primary output shaft. The transfer case also includes an input member and an electric machine. The input member is rotatably coupled to the electric machine and the input shaft to provide rotational torque from the electric machine, to the input shaft, and to the primary output shaft.

Methods and sysemteds for a driveline, comprising: a transmission having an input and an output, a power take-off (PTO), a first electric motor drivingly engaged or selectively drivingly engaged with the input of the transmission, a second electric motor, a first clutching device, and a second clutching device, wherein the second electric motor is selectively drivingly engaged with the input of the transmission through the first clutching device, and wherein the second electric motor is selectively drivingly engaged with the PTO through the second clutching device. The present document further relates to a vehicle including said dual motor electric driveline, and to a method of controlling said dual motor electric driveline.

A hybrid dual-clutch transmission includes a first countershaft sub-transmission, a second countershaft sub-transmission, a first clutch assigned to the first countershaft sub-transmission, a first actuating chamber, a first centrifugal oil chamber, a first power transmission region, a first inner lamella carrier, and a first outer lamella carrier. The transmission also includes a second clutch assigned to the second countershaft sub-transmission, a second actuating chamber, a second centrifugal oil chamber, a second power transmission region, a second inner lamella carrier, and second outer lamella carrier. The transmission further includes a third clutch to connect to an internal combustion engine and which has a third actuating chamber, a third centrifugal oil chamber, a third power transmission region, a third inner lamella carrier, and a third outer lamella carrier. The first, second, and third power transmission regions are arranged radially stacked one on top of the other and axially at least partially overlapping.

Transmission control mechanism 100 in a power transmission system of a vehicle a transmission shift lever 102, a shifter arm 106, an input ratchet shifting assembly 108, an input shift ratchet and cam assembly 110, a drive shaft 112, a plurality of keys 113, a driven shaft 114, a coupler 115, a driven shaft drive gear 116, a driven shaft driven gear 118, a plurality of rail shifting means 120, a plurality of bushes 121, a plurality of rail shifter support members 122, a plurality of pawl assemblies 124, a plurality of pawl kicker means 126, a lever position control valve assembly 136, an active detent control valve assembly 138, a detent control valve assembly 140, a clutch selection control valve assembly 142, a gear shift lever position valve lever 144 and a master clutch control valve assembly 100M.

A dual clutch arrangement for a dual clutch transmission includes a first clutch and a second clutch. The output of the first clutch is connected to the input of the second clutch. A dual clutch transmission arrangement with the dual clutch arrangement and a motor vehicle with the dual clutch arrangement are also provided.

A multi-clutch device for a hybrid module includes a separating clutch, a dual clutch device, a first pivot bearing, a common rotary part, a second pivot bearing, a gear element, and a clamping device. The separating clutch is for transmitting torque from an internal combustion engine to the multi-clutch device. The dual-clutch device is for transmitting torque to a drivetrain. The dual clutch device includes a first partial clutch and a second partial clutch. The common rotary part is mounted rotatably by the first pivot bearing, and couples the separating clutch, the first partial clutch, and the second partial clutch in a rotationally fixed manner. The gear element is mounted rotatably by the second pivot bearing, and forms a gear between the electrical machine and the multi-clutch device. The clamping device is for clamping the common rotary part and the gear element against each other in the axial direction.

A multi-clutch device for a hybrid module includes a separating clutch, a dual clutch device, a first pivot bearing, a common rotary part, a second pivot bearing, a gear element, and a clamping device. The separating clutch is for transmitting torque from an internal combustion engine to the multi-clutch device. The dual-clutch device is for transmitting torque to a drivetrain. The dual clutch device includes a first partial clutch and a second partial clutch. The common rotary part is mounted rotatably by the first pivot bearing, and couples the separating clutch, the first partial clutch, and the second partial clutch in a rotationally fixed manner. The gear element is mounted rotatably by the second pivot bearing, and forms a gear between the electrical machine and the multi-clutch device. The clamping device is for clamping the common rotary part and the gear element against each other in the axial direction.

An electric drive axle assembly of a vehicle includes an electric motor having an output shaft. At least one of a gear and a planetary gear assembly is coupled to the output shaft of the electric motor. The at least one of the gear and the planetary gear assembly is coupled to a differential mechanism configured to transfer torque to two axle shafts of the vehicle. The electric drive axle assembly configured to produce a plurality of speed ratios between the electric motor and the differential mechanism.