A power-split hybrid transmission includes a direction reversing mechanism between the transmission input and a power-splitting planetary gear set. The transmission input is driven by an internal combustion engine. Engaging the direction reversing mechanism to drive the carrier in a direction opposite of engine rotation permits the transaxle to achieve higher output torque in reverse when using predominantly engine power. The direction reversing mechanism may also be used to hold the carrier stationary, providing a torque reaction to propel the vehicle with a generator, thus increasing the output torque in both directions when operating under only battery power.

A method for manufacturing a propeller reduction gear, which includes measuring manufacturing defects of the casing; calculating a first angular play induced at each intermediate gear by the measured manufacturing defects; estimating a second angular play induced at each intermediate gear by deformations of the casing when the reduction gear transmits a threshold torque; calculating a total angular play from the first angular play and the second angular play; and selecting two intermediate gears with a phase difference that compensates for the total angular play.

A device for transmitting a motive force from a prime mover to two transfer shafts includes; an input shaft having a longitudinal axis, a load transfer member which engages the input shaft and rotates around an axis perpendicular to the longitudinal axis of the input shaft and first and second input shaft gears associated with the input shaft. The device further includes a first transfer shaft having a first transfer gear to engage the first input shaft gear and a second transfer shaft having a second transfer gear to engage the second input shaft gear. The first and second input shaft gears engage the load transfer member at different locations thereon, for transmitting the motive force from the input shaft to the first and second transfer shafts.

In a control system and a control method, an electronic control unit is configured to crank an engine by setting a clutch to a half engaged state in a state where operation of the engine is stopped during traveling. The half engaged state is a state where the clutch is engaged with a slip. The electronic control unit is configured to, after a rotation speed of the engine has reached an ignition permission rotation speed or higher, increase a transmitted torque capacity of the clutch to a transmitted torque capacity that satisfies the following conditions i) and ii): i) the transmitted torque capacity is larger than a transmitted torque capacity before the rotation speed of the engine has reached the ignition permission rotation speed; and ii) the transmitted torque capacity allows the clutch to be kept in the half engaged state.

A power transmission apparatus includes: a first input shaft; a second input shaft coaxially disposed with the first input shaft and selectively connected with the first input shaft; a third input shaft coaxially disposed with the second input shaft and selectively connected with the first input shaft; a first output shaft in parallel with the first input shaft; a second output shaft arranged in series to and selectively connected with the first output shaft; a first shift-stage shifting section outputting two shifted torques from the second input shaft to the first output shaft; a second shift-stage shifting section outputting one shifted torque and one reverse torque from the third input shaft to the first output shaft; and a compound shifting section outputting a shifted output torque from a received torque selectively from the first input shaft or the first output shaft.

The present invention relates to a Self-Governed Gear Box (SGGB) functions as an automatic gear box system suitable for any power drive ranging from electrical to mechanical. This is an optimally-performed gear box system, in terms of power loss. The assembly is compact and simple with no additional elements other than gears. For the same reason, it is highly economical, easy to assemble and easy to maintain, with an expected ideal performance. Such a dynamic task of an automatic gear box system is achieved by implementing an algorithm enabling to sense the additional load applied at the input end, created by diverting a small quantity of power from the output end. This is in effect of inducing an engine disturbance as under-drive, under sub-optimum output rpm-torque conditions. As the engine disturbance introduced for sub-optimum output rpm-torque condition is a continuous governance mechanism, the input to output speed ratio assumed also will be continues in a designed range. The engine starts from zero speed when this gear box system is coupled between an engine and a load. Thus it is a continuously variable transmission system.

A magneto-rheological servo speed regulator-reducer comprises a power output shaft, a planetary gear (2), an eccentric shaft (3), a left speed reduction main shaft (4), a pin gear housing (5), a cycloidal pin (6), a main bearing (7), a right speed reduction main shaft (8), a signal control line (9), a base housing (10), a clutch end plate (11), a coil iron core (12), an excitation coil (13), an input shaft bracket (14), an input bearing (15), a power input shaft (16), an input shaft oil seal (17), magneto-rheological fluid (18), a transmission clutch disc (19), a clutch cavity (20), a transmission oil seal (21), a clutch oil seal (22), an encoder (23), a transmission bearing (24), a cycloidal gear bearing (25), a cycloidal gear (26), a speed reduction main shaft oil seal (27), an eccentric bearing (28) and a transmission main shaft (29).

Disclosed are a transmission method and a device for coaxially outputting autorotation and revolution. The axis of a power output shaft (17) and the axis of a crank of a power input shaft (1) are coincided with each other. The power output shaft (17) revolves around the axis of a main shaft of the power input shaft (1), and the revolution speed equals to the rotation speed of the power input shaft (1). After the superposition of a transition gear train (A) and a K-H-V few-tooth-difference planetary gear train (B), a driving force of the power input shaft (1) enables the power output shaft (17) to generate the autorotation which has the same speed as that of the power input shaft (1) but in the opposite direction, and at the same time, a thrust bearing (19) coaxial with the power output shaft (17) is connected to a thrust bearing (18) coaxial with the main shaft of the power input shaft (1) in series to bear axial loads. The transmission device for coaxially outputting autorotation and revolution is mainly formed by the power input shaft (1), the transition gear train (A), the K-H-V few-tooth-difference planetary gear train (B), the thrust bearings (18, 19) connected in series, and the power output shaft (17), etc. The device can be combined with a plasticizing delivery device using an eccentric rotor and having pulsed volume deformation to form an extruder.

A power transmitting apparatus includes a transmission gear mechanism and a power split mechanism including a first rotation element connected to a first input member, a second rotation element connected to a rotary machine, and a third rotation element connected to the drive shaft via a first output member. The transmission gear mechanism is configured to transmit a torque to the first input member and the first rotation element via a second output member. The transmission gear mechanism and the power split mechanism are arranged on the same rotation axis as an output shaft of an engine. The transmission gear mechanism and the power split mechanism are arranged in the order of the transmission gear mechanism and the power split mechanism from the side closer to the engine. The second output member and the first input member are connected to each other by a spline or a serration.

A work vehicle includes: a power transmission shaft drivable to rotate; a shaft holder holding the power transmission shaft in such a manner that the power transmission shaft is rotatable; and a hydraulically operable section configured to operate in response to receiving operating oil, the power transmission shaft including: a shaft groove extending entirely around an outer circumferential portion of the power transmission shaft; an inlet port extending inside the power transmission shaft in a radial direction of the power transmission shaft and connected with the shaft groove; and a supply oil passage extending inside the power transmission shaft in a longitudinal direction of the power transmission shaft and connected with the inlet port inside the power transmission shaft.