A control method and system for a hybrid vehicle with a DCT is provided. The method includes monitoring whether clutch stuck off is sensed and requesting prohibition of regenerative braking by a driving motor and requesting braking control using mechanical braking force to a higher controller when clutch stuck off is sensed. A driving mode is then changed into a single clutch driving mode, in which a vehicle is driven in gear stages realized by a clutch other than the clutch in which the clutch stuck off occurred and the higher controller is requested to prohibit regenerative braking by the driving motor, when clutch stuck off has occurred. Additionally, the higher controller is requested to obtain the braking force for the vehicle from mechanical braking force is response to determining that single clutch shifting has been performed and braking is required.

A drive device for a motor vehicle has an electric drive machine which is operatively connected to a transmission via a driveshaft. The transmission has at least first and second planet gear stages and a differential stage. The first planet gear stage has a first planet gear set with planet gears rotatably arranged on a first planet gear carrier and mesh with a first sun gear and a first ring gear. The second planet gear stage has a second planet gear set with planet gears rotatably arranged on a second planet gear carrier and mesh with a second sun gear and a second ring gear. The planet gear stages are operatively connected to a double clutch device with first and second power-shift clutches, the ring gears are rigidly connected together to form a common ring gear, and the planet gear carriers are rigidly connected together to form a common planet gear carrier.

A gear engagement method for a hybrid vehicle includes detecting whether or not baulking occurs when a controller attempts to engage a target gear via a synchronizer. The gear engagement method also includes checking, by the controller, for a stationary state of the vehicle if the result of the detecting shows that there is baulking. The gear engagement method also includes engaging, by the controller via the synchronizer, a different gear that shares a same input shaft with the target gear if the result of the checking shows that the vehicle is in a stationary state. The gear engagement method also includes reattempting an engagement with the target gear after disengaging the different gear. The disengaging and the reattempting are performed by the controller via the synchronizer after the engaging.

An apparatus includes a torque circuit and a clutch circuit. The torque circuit is structured to monitor a torque demand level of an engine. The clutch circuit is structured to (i) disengage an engine clutch of a transmission to decouple the engine from the transmission in response to the torque demand level of the engine falling below a threshold torque level and (ii) disengage a motor-generator clutch of the transmission to decouple a motor-generator from the engine in response to the torque demand level of the engine falling below the threshold torque level. The motor-generator is directly coupled to the transmission.

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.

A hybrid dual clutch transmission includes a first sub-transmission and a first clutch allocated to the first sub-transmission, a second sub-transmission and a second clutch allocated to the second sub-transmission, a separating clutch provided to decouple the hybrid dual clutch transmission from an internal combustion engine. The first clutch has a first outer disc carrier, the second clutch has a second outer disc carrier, and the separating clutch has a further outer disc carrier. The first clutch, the second clutch, and the separating clutch are stacked radially one above the other and are arranged at least substantially axially overlapping. The transmission also includes an electric motor having a rotor, a stator, and a housing. The transmission further includes a drive element permanently non-rotationally connected to the first outer disc carrier of the first clutch to link the electric motor.

A gearbox comprising: an outer intermediate shaft carrying a first set of shaft gears; an inner intermediate shaft carrying a second set of shaft gears, the inner intermediate shaft running concentrically within the outer intermediate shaft; a first lay shaft carrying a first set of drive gears and an output gear positioned along the first lay shaft between two of the first set of drive gears, a second lay shaft carrying a second set of drive gears and an output gear positioned along the second lay shaft between two of the second set of drive gears, each drive gear being coupled to a respective shaft gear to together provide a plurality of gear ratios between the intermediate shafts and the output shaft; and an output shaft, each lay shaft being coupled to the output shaft by the respective output gear.

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 transmission arrangement for a motor vehicle drive train (10) includes a first input shaft (12), a second input shaft (24), a countershaft (40), a first sub-transmission (26), which includes a first plurality of engageable gear sets (30, 32) for establishing a number of gear steps, a second sub-transmission (28), which includes a second plurality of engageable gear sets (34, 36) for establishing a number of gear steps, and a bridge clutch (S3), which is configured for coupling the first sub-transmission (26) and the second sub-transmission (28) in order to establish at least one winding-path gear step (V1, V6).

A hybrid transmission assembly for a motor vehicle powertrain may include an input shaft arrangement including a first input shaft of a first sub-transmission and a second input shaft of a second sub-transmission. The assembly may further include a first electric machine axially parallel and connected to the first input shaft, and a second electric machine axially parallel and connected to the second input shaft. The input shaft arrangement, viewed axially, is in a center of four quadrants. An axis of the first electric machine is in the first quadrant and, or alternatively, an axis of the second electric machine is in the fourth quadrant.