Auxiliary transmission actuation mechanism 200 in a power transmission unit of a vehicle includes a transmission actuating gear 202, a gear driven bush 204, a gear actuating means 206, a shift fork 208, a shift rail 210, a clutch control valve actuating arm 212, a rail shifting means 214. The transmission actuating gear 202 is used to drive at least one of an even shaft and an odd shaft which in turn drives an output shaft through gears thereby propelling the vehicle when at least one of a dual clutch unit and a hydraulic system of vehicle is not functioning. The clutch control valve actuating arm 212 is adapted to engage a movable member of a clutch control valve assembly 100V thereby actuating clutch control valve 100V to de-actuate the dual clutch unit.

A dual clutch transmission for a motor vehicle, including gearwheel sets that can be shifted via shift elements, which form exactly eight gear stages which are assigned to a first sub-transmission and to a second sub-transmission. Each sub-transmission is provided with a joint drive shaft. The mutually coaxial input shafts can be alternately activated via a respective power-shiftable clutch, and the even forward gears are assigned to the first sub-transmission and the odd forward shifts are assigned to second transmission which can be switched over during gear shifting by the shift elements. The dual clutch transmission is provided with an intermediate gear stage which can be switched either to the first sub-transmission, or to the second sub-transmission.

A dual clutch transmission for a motor vehicle provided with gearwheels sets that are shiftable via switching elements, which form in particular exactly eight wheel planes, which are respectively assigned to a first sub-transmission and to a second sub-transmission, among which each sub-transmission is provided with an input shaft and both sub-transmissions are provided with a common output shaft. The input shafts, which are coaxial to each other, can be alternately activated via a load-shiftable clutch, and the odd forward gears are assigned to the first sub-transmission and the even forward gears are assigned to the second sub-transmission, which can be shifted during a gear shift by means of the switching elements.

A drive unit includes: a pedal crankshaft to which a pedal stepping force of a rider is applied; an electric motor that detects a torque input to the pedal crankshaft and generates a drive force; and a transmission that changes shift of the drive force of the electric motor and delivers the drive force to the pedal crankshaft, the transmission includes a main shaft that supports a plurality of drive gears and a counter shaft that supports a plurality of driven gears that engage with the plurality of respective drive gears, and the transmission selects one torque delivery gear among the plurality of drive gears, delivers the drive force of the electric motor to the counter shaft, and shifts the torque delivery gear without inverting a rotational direction of the drive gear.

A dual clutch transmission for a motor vehicle, with gear wheel sets, which can be engaged via shift elements and which, in particular, form eight wheel planes, which are associated with, respectively, a first sub-transmission and a second sub-transmission, each sub-transmission has a respective input shaft and both sub-transmissions have a common output shaft, wherein the mutually coaxial input shafts can each be activated in alternation via a power-shift clutch and the even forward gears are associated with the first sub-transmission and the odd forward gears are associated with the second sub-transmission.

A dual clutch transmission for a motor vehicle, with gear wheel sets, which can be engaged via shift elements and which form exactly eight wheel planes, which are associated, respectively, with a first sub-transmission and a second sub-transmission, of which each sub-transmission has a respective input shaft and the two sub-transmissions have a common output shaft, which is axis-parallel to the input shafts. The mutually coaxial input shafts can each be activated in alternation via a power-shift clutch, and the even forward gears are associated with the first sub-transmission and the odd forward gears are associated with the second sub-transmission, which can be engaged when a gear shift occurs via the shift elements.

A power transmission apparatus for a vehicle may include a first input shaft directly connected with a motor/generator, second and third input shafts and torque mediating shaft coaxial and selectively connected with the first input shaft, a first intermediate shaft and first and second idle shafts in parallel with the first input shaft, a second intermediate shaft in parallel with the first input shaft, and selectively connected with a transmission housing, an output shaft in parallel with the first input shaft, and coaxial and selectively connected with the second intermediate shaft, a first shifting section including six gear sets, selectively receiving torque through the first and third input shafts, and outputting intermediate shift-stages, and a second shifting section including a planetary gear set, forming an output torque by combination torques from the first shifting section and the second input shaft, and outputting the output torque to the output shaft.

A dual clutch transmission for a motor vehicle. A gearwheel set switchable via switching elements, which form eight wheel planes and which are respectively assigned to a first sub-transmission and to a second sub-transmission, among which each sub-transmission is provided with an input shaft and both sub-transmissions are provided with a common output shaft. The input shafts, which are coaxial to each other, can be alternately activated via a load-shiftable clutch, and the even forward gears are assigned to the first sub-transmission, while the odd forward gears are assigned to the second sub-transmission, which are shiftable during a gear switch via the switching elements. The input shafts are free of the rotationally fixed gearwheels of the wheel planes arranged thereupon.

A dual-clutch transmission for a motor vehicle, with gear wheel sets engageable via shift elements, with the gear wheel sets forming particularly precisely eight wheel planes, each of which is allocated to a first sub-transmission and a second sub-transmission, of which each sub-transmission has an input shaft and both sub-transmissions have a common output shaft. The input shafts, which are coaxial with respect to one another, can each be activated in an alternating manner via a power-shift clutch, and the even forward gears are allocated to the first sub-transmission and the odd forward gears are allocated to the second sub-transmission, which can be engaged upon a gear change by way of the shift elements.

A power transmission system of hybrid electric vehicle may include an engine, a motor/generator, an input unit including a first input shaft, a second input shaft separately disposed on a same shaft as the first input shaft and an end portion of the second input shaft selectively connectable with the first input shaft in a state of being directly connected with the output side of the motor/generator, a first middle shaft disposed surrounding the first input shaft without rotational interference with the first input shaft to be selectively connectable with the first input shaft, and a second middle shaft including a hollow shaft and disposed surrounding the second input shaft without rotational interference with the second input shaft to be selectively connectable with the second input shaft, and an output shifter shifting torque of the input unit and outputting the shifted torque.