A transmission for a vehicle includes a first input shaft installed to receive power from an engine, a second input shaft concentrically disposed with the first input shaft and installed to receive power from a motor, an output shaft disposed in parallel with the first input shaft and the second input shaft, a first synchronizer provided at the first input shaft to selectively connect the first input shaft and the second input shaft, a first stage driving gear and a second stage driving gear provided at the second input shaft, a first stage driven gear and a second stage driven gear disposed at the output shaft to be freely rotated and meshed with the first stage driving gear and the second stage driving gear, respectively, to form a first stage shift ratio and a second stage shift ratio, and a second synchronizer installed to selectively connect any one of the first stage driven gear and the second stage driven gear with the output shaft.

A first electric motor is coupled to a first rotating element of a first differential mechanism, and a second electric motor is coupled to a first rotating element of a second differential mechanism. A first rotating element coupling body, formed by coupling a second rotating element of the first differential mechanism and a second rotating element of the second differential mechanism with each other, is coupled to an output shaft. a second rotating element coupling body, formed by coupling a third rotating element of the first differential mechanism and a third rotating element of the second differential mechanism with each other, is coupled to a first connection/disconnection portion. A first rotating element of the first differential mechanism, the first rotating element coupling body, the second rotating element coupling body, a first rotating element of the second differential mechanism are aligned in this order on a collinear diagram.

A powertrain for a hybrid vehicle may include a complex planetary gear set including four rotation elements having first, second, third, and fourth rotation elements; a motor-generator fixedly connected to the first rotation element of the complex planetary gear set; a first brake configured to selectively connect the second rotation element of the complex planetary gear set to a transmission housing; an input shaft connected to an engine and configured to be selectively connectable to each of the first rotation element and the third rotation element of the complex planetary gear set; and an output shaft connected to the fourth rotation element of the complex planetary gear set.

A vehicle transmission includes first and second input gear shafts, an intermediate gear shaft and an output gear shaft. The first input gear shaft has a first torque transmission member, and the second input gear shaft has a first gear wheel. The intermediate gear shaft has second and third gear wheels. The output gear shaft has a fourth gear wheel and a second torque transmission member. The third gear wheel and the fourth gear wheel are arranged to interact with each other for transferring torque from the intermediate gear shaft to the output gear shaft. The first gear wheel and the second gear wheel are arranged to interact with each other for providing a first gear ratio. The first torque transmission member and the second torque transmission member are arranged to interact with each other via a flexible member for providing a second gear ratio.

An axle assembly having a gear reduction unit that is configured to operatively connect an electric motor to a drive pinion. The gear reduction unit includes at least two gear sets. At least one clutch is engageable to provide a torque path between the electric motor and the drive pinion.

Various methods and systems are provided for a shift assembly for a vehicle transmission. In one example, a shift assembly for a transmission includes a first barrel cam including a first cam track; a second barrel cam arranged coaxially with the first barrel cam and including a second cam track; a first motor configured to drive the first barrel cam independent of the second barrel cam; and a second motor configured to drive the second barrel cam independent of the first barrel cam.

Methods and systems for a vehicle are provided. A transmission system includes, in one example, a first planetary gear set including a first ring gear and a first sun gear, a second planetary gear set that includes a second ring gear and a second sun gear, and a third planetary gear set that includes a third ring gear and a third sun gear. The transmission system further includes a first brake device configured to selectively ground the first ring gear, a second brake device configured to selectively ground the second ring gear, and a first lock-up clutch configured to selectively ground the first ring gear, wherein the first sun gear, the second sun gear, and the third sun gear are coupled in series.

A vehicle control system configured to limit damage to an electric storage device even if a speed of a motor is changed abruptly. The control system includes a differential mechanism connected to an engine, a motor, and drive wheels, and a clutch. The control system includes a controller is configured to calculate an upper limit power possible to be applied or discharged to or from an electric storage device when a condition to engage the clutch is satisfied and restrict the electric power to be applied or discharged to or from the electric storage device when the electric power is equal to or less than a maximum allowable power that is less than the upper limit power before the clutch is engaged.

An axle assembly that includes a sector cam. The sector cam may be rotatable about a sector cam axis and may be operatively connected to first and second shift collars. Rotation of the sector cam about the sector cam axis may control movement of the first and second shift collars.

A powershift transmission of a flexible design for a working machine. The powershift transmission has at least six transmission shafts (2, 8, 15, 17, 22, 27, 30) arranged spaced apart from one another. A loose wheel (25), connected to the clutch (26) for the third gear, meshes with a fixed wheel (29) which is connected to the drive output shaft (30) in a rotationally fixed manner.