There is provided a work vehicle including an oil outlet port and a partition part. The oil outlet port opens to a bottom portion in one end side of a transmission case in a vehicle body front-back direction and a vehicle body left-right direction. The oil outlet port takes out a lubricating oil from an interior of the transmission case. The partition part divided an internal space of the transmission case into a first space zone along a sidewall portion of the transmission case, and a second space zone other than the first space zone. The partition part brings the first space zone into a sealed state.

There is provided a work vehicle including a partition wall to keep partition between a first space zone as part of an internal space of the transmission case in which a differential mechanism is located and a second space zone as part of the internal space which is adjacent to the first space zone. An upper space is disposed above the partition wall and configured to allow lubricating oil scooped up from the first space zone by a ring gear to flow in the second space zone. A flow-out path is disposed below the upper space and configured to allow the lubricating oil to flow out of the second space zone to the first space zone.

Fluid pumping system for a vehicle with an internal combustion engine, the fluid pumping system comprising: a housing; an electric motor; a planetary gear with a first member that can be driven by the internal combustion engine, a second member driven by the electric motor, and a third member; and a pump driven by the third element of the planetary gear set, the housing being closed by a pump flange and a pulley with pulley cover, wherein at least the pulley and/or a ring gear disposed in the pulley is made of plastic.

Fluid pumping system for a vehicle with an internal combustion engine, the fluid pumping system comprising: a housing; an electric motor; a planetary gear with a first member that can be driven by the internal combustion engine, a second member driven by the electric motor, and a third member; and a pump driven by the third element of the planetary gear set, the housing being closed by a pump flange and a pulley with pulley cover, wherein at least the pulley and/or a ring gear disposed in the pulley is made of plastic.

A continuously variable transmission including a main planetary gear set. A sun gear of the main planetary gear set coupled to an input shaft and a ring gear of the main planetary gear set may be coupled to an output shaft. A continuous range of transmission ratios between the input shaft and the output shaft provided by gradually changing an rpm of a carrier of the main planetary gear set. To this end a vane coupling mechanism may be coupled with the main planetary gear set. The vane coupling mechanism including an inner rotor coupled with the main carrier, where the inner rotor may be rotatably disposed within an outer rotating chamber. The outer rotating chamber coupled with the main sun gear.

A continuously variable transmission including a main planetary gear set. A sun gear of the main planetary gear set coupled to an input shaft and a ring gear of the main planetary gear set may be coupled to an output shaft. A continuous range of transmission ratios between the input shaft and the output shaft provided by gradually changing an rpm of a carrier of the main planetary gear set. To this end a vane coupling mechanism may be coupled with the main planetary gear set. The vane coupling mechanism including an inner rotor coupled with the main carrier, where the inner rotor may be rotatably disposed within an outer rotating chamber. The outer rotating chamber coupled with the main sun gear.

Provided is a combine with a speed-change power transmission apparatus including: a hydraulic static continuously variable transmission unit that receives an input of drive force from an engine, and subjects the drive force to speed change; and a planetary power transmission unit that combines the drive force from the engine and an output from the continuously variable transmission unit and outputs a combined drive force to a travelling apparatus, wherein a power transmission case can be made lighter at low cost. In this combine, a continuously variable transmission case portion of a power transmission case, which houses a continuously variable transmission unit, is formed integrally with a planetary power transmission case portion of the power transmission case, which houses a planetary power transmission unit. A partition that separates a continuously variable transmission compartment of the continuously variable transmission case portion and a planetary power transmission compartment of the planetary power transmission case portion from each other is provided within the power transmission case, the continuously variable transmission compartment housing the continuously variable transmission unit, and the planetary power transmission compartment housing the planetary power transmission unit.

Provided is a combine with a speed-change power transmission apparatus including: a hydraulic static continuously variable transmission unit that receives an input of drive force from an engine, and subjects the drive force to speed change; and a planetary power transmission unit that combines the drive force from the engine and an output from the continuously variable transmission unit and outputs a combined drive force to a travelling apparatus, wherein a power transmission case can be made lighter at low cost. In this combine, a continuously variable transmission case portion of a power transmission case, which houses a continuously variable transmission unit, is formed integrally with a planetary power transmission case portion of the power transmission case, which houses a planetary power transmission unit. A partition that separates a continuously variable transmission compartment of the continuously variable transmission case portion and a planetary power transmission compartment of the planetary power transmission case portion from each other is provided within the power transmission case, the continuously variable transmission compartment housing the continuously variable transmission unit, and the planetary power transmission compartment housing the planetary power transmission unit.

A transmission assembly includes a ring gear configured to receive an input torque from a power source, a carrier assembly coupled to the ring gear, the carrier assembly configured to rotate about a first axis and including a housing, and a spider gear rotatably coupled to the housing, a carrier outlet shaft including a carrier outlet gear in meshed engagement with the spider gear, wherein the carrier outlet shaft is configured to transmit an output torque to a driveshaft, a control shaft including a control gear in meshed engagement with the spider gear, and a load applicator coupled to the control shaft, wherein the load applicator is configured to provide a resistive torque to the control shaft to resist rotation of the control shaft and vary a gear ratio between the driveshaft and the input shaft.

A variable drive system of a power system is disclosed. The variable drive system may include an engine gearset to transfer power from an engine output of an engine to a variable input driveshaft of the variable drive system. The variable drive system may include a generator gearset to transfer power, generated by the engine, to a generator driveshaft of a generator. The variable drive system may include a variable drive, coupled to the variable input driveshaft, to enable a gear ratio between engine output and the generator driveshaft to be adjustable, the variable input driveshaft being offset from at least one of the engine output or the generator driveshaft. The variable drive system may include a direct drive clutch to bypass variable power transfer through the variable drive and enable direct power transfer from the engine output to the generator driveshaft.