A CVT drive train having an input drive, a start-up element, a continuously variable variator, and a differential. A direct shifting stage bridges the variator and is connected directly to the input drive. The direct connection of the direct shifting stage to the input drive enables the direct shifting stage to be used advantageously independently of the start-up element and can be connected, for example, to a gear that is used in conventional CVT drive trains to drive a hydraulic pump.

A transmission (G) for a motor vehicle includes an input shaft (GW1), an output shaft (GW2), a differential gear (AG), an interface (IF) to a transmission-external drive unit, an electric machine (EM) with a rotationally fixed stator (S) and a rotary rotor (R), a plurality of planetary gear sets (PS, PV), and a plurality of shift elements (A, B, C, D, E). The electric machine (EM) is arranged at an axial end of the transmission (G) which is positioned opposite the interface (IF) to the transmission-external drive unit. An area (X) directly adjacent to the differential gear (AG) is configured for accommodating a joint (GL) of a motor vehicle side shaft (DS) and is arranged completely or at least in part in an installation space radially outside the electric machine (EM).

A vehicle includes a hydraulic control unit (HCU) having a set of electrically-actuated valves configured to open/close to accumulate a pressurized hydraulic fluid in a hydraulic apply circuit of a first clutch of a transmission; a hydraulic fluid pump mechanically driven by an engine and configured to provide the pressurized hydraulic fluid to the HCU; and a controller configured to: prior to temporarily stopping the engine, control the engine and the HCU such that the pressurized hydraulic fluid accumulates in the hydraulic apply circuit of the first clutch to a desired hydraulic fluid pressure, and upon restarting the engine, control the set of electrically-actuated valves of the HCU to provide the pressurized hydraulic fluid from the hydraulic apply circuit first clutch to a hydraulic apply circuit for a second clutch of the transmission to apply the second clutch and shift the transmission into drive.

A CVT transmission including a start-up element, a variator, and a direct-shift stage for switching between a first operating range (low) and a second operating range (high). A maximum transmission ratio of the second operating range (high) corresponds to a minimum transmission ratio of the first operating range (low). The transmission ratio ranges are arranged so that the marginal variator transmission ratio ranges, which constitute low-efficiency ranges, are not used.

The present invention is provided with: a plurality of driving gears provided to an input shaft; driven gears which are provided to a first intermediate shaft, a second intermediate shaft, and a third intermediate shaft and which are always engaged with the driving gears; and a gear switching system that uses one of the driven gears and the driving gears as idler gears provided so as to be able to rotate idly with respect to the shafts to which said gears are provided, that uses the other of the driven gears and the driving gears as fixed gears that are fixed on the shafts to which said gears are provided, and that disengageably fixes an idler gear corresponding to one gear selected among a plurality of gears on the shaft to which the idler gear is provided.

The present invention is capable of suppressing gear shift shocks or delays in acceleration with no interruption of driving force and reducing the weight. Disclosed is a transmission which is provided with multiple stage shift gears so arranged to shift a number of dog clutches to shift a gear to the upper stage of the multiple stage shift gears, and is characterized in that a guide part is provided to a shift operation section and the dog clutches on each of the sages so as to move the lower dog clutch in a neutral direction by a coasting torque acting on the lower stage by a shift rotation of the upper stage to release a meshing engagement when meshing engagements of the lower and upper dog clutches are simultaneously performed by an operation of the shift operation section.

A transmission includes a drive shaft, an output shaft, a housing, and a first through third planetary gear sets. Six shift elements include a first brake, a second brake, and first through fourth clutches. The shift elements are selectively actuated, by which ten forward gears and one reverse gear can be. Each planetary gear set features at least one sun gear, one planetary gear, one planetary carrier and one ring gear. The drive shaft and the output shaft are arranged in a manner axially offset to each other. The drive shaft is connectable to the sun gear of the third planetary gear set and the second brake through the first clutch, and is connectable to the planetary carrier of the third planetary gear set through the second clutch. The planetary carrier of the third planetary gear set is connected to the first brake.

A multi ratio drive including a first drive chain having a first drive chain engaged state and a first drive chain disengaged state; and a second drive chain having a second drive chain engaged state and a second drive chain disengaged state. The first drive chain drives the axle with a first gear ratio between the drive shaft and the axle when the first drive chain is in the first drive chain engaged state and the second drive chain is in the second drive chain disengaged state; the second drive chain drives the axle with a second gear ratio between the drive shaft and the axle when the second drive chain is in the second drive chain engaged state and the first drive chain is in the first drive chain disengaged state; and the first gear ratio is different from the second gear ratio.

A planetary transmission includes a plurality of planetary gear sets. Each of the plurality of planetary gear sets has a plurality of planetary gear set shafts. At least one additional rotatably mounted shaft is connectable to at least one of the plurality of planetary gear set shafts by at least one shift element in order to realize at least one ratio. The at least one additional rotatably mounted shaft is also connectable into power flow between an input shaft and an output shaft by the at least one shift element. The at least one additional rotatably mounted shaft is operatively connected directly to a component fixed to a housing, by which operative connection actuation energy for the at least one shift element is transferable from the component fixed to the housing into the at least one additional rotatably mounted shaft.

The driving force from a drive source is transmitted from a main input shaft to a continuously variable transmission mechanism through an input switching mechanism and a first input path in which a first speed-reducing gear is disposed, and is further transmitted to a first output path in which a second speed-reducing gear is disposed, thus establishing a LOW mode. And the driving force is transmitted from the main input shaft to the continuously variable transmission mechanism through the input switching mechanism and a second input path in which a speed-increasing gear, and is further transmitted to a second output path in which a third speed-reducing gear, thus establishing a HI mode. The first speed-reducing gear on the input side, the speed-increasing gear on the input side and the second and third speed-reducing gears on the output side are independent from each other.