A drive unit includes a decelerator rotatably supported by a housing, the decelerator including a first transmission gear, a second transmission gear having teeth of a smaller number than that of the first transmission gear, and a transmission shaft to transmit a rotation of the first transmission gear to the second transmission gear; and a bearing supporting the first transmission gear in the housing such that the first transmission gear is rotatable. A distance, in a first direction in which the transmission shaft extends in the housing, from a reference plane to teeth of the first transmission gear is less than a distance in the first direction from the reference plane to an innermost portion of the bearing, in which the reference plane passes through an outermost portion of the bearing and is perpendicular to the first direction.

A system for augmenting the velocity of a motorized vehicle that includes a series of sprockets that interact with each other increasing the torque generated from the transmission of the vehicle and delivered through the drive shaft, thereby increasing the velocity of the vehicle.

A transmission includes a transmission main housing, an intermediate plate secured to the transmission main housing; and a rear housing attached to the intermediate plate. An input shaft is connected to an extension shaft including a plurality of splitter gears selectively couple-able to the extension shaft. A main shaft is rotatably supported on the extension shaft and includes a plurality of main box gears selectively couple-able to the main shaft. A range shaft is drivingly connected to the main shaft and provides input to a planetary gear assembly, the range shaft being supported by a first bearing disposed within the intermediate plate and further including a bore disposed within a forward end. The extension shaft is supported at a first end by a bearing assembly within a partition wall and a second end is supported by a bearing assembly disposed within the bore in the range shaft.

A vehicle includes a motor, a gear mechanism connected downstream of the motor, a box that has a motor chamber that houses the motor, a gear chamber that houses the gear mechanism and lubricating oil, and an exhaust pipe. A first cooling box, in which cooling liquid that cools the motor is introduced, is configured on an outer circumference of the motor. A second cooling box, which is connected so that cooling liquid can circulate between the second cooling box and the first cooling box, is configured on an outer circumference of the box. The motor chamber is arranged at a position spaced further apart from the exhaust pipe than the gear chamber.

A transmission for an at least partially electrically driven vehicle includes a rotor shaft of an electric machine, an input shaft, and a synchronization device arranged to couple the input shaft to the rotor shaft. The synchronization device includes a first synchronization ring connected to the rotor shaft for conjoint rotation, a second synchronization ring, a friction disk located axially between the first synchronization ring and the second synchronization ring, a clutch body connected to the input shaft for conjoint rotation, and a sliding sleeve, axially slidable along the clutch body to initiate synchronization of the first synchronization ring and the second synchronization ring for conjoint rotation to couple the rotor shaft to the input shaft. The first synchronization ring may have a cone for receiving the second synchronization ring.

An engine for an aircraft includes an engine core having a turbine, a compressor, and a core shaft connecting the turbine to the compressor; a fan located upstream of the engine core, the fan having a plurality of fan blades; and a gearbox. The gearbox is an epicyclic gearbox and comprises a sun gear, a plurality of planet gears, a ring gear, and a planet carrier on which the planet gears are mounted. The radial bending stiffness of the planet carrier is equal to or greater than 1.20×10.sup.9 N/m, and/or the tilt stiffness of the planet carrier is greater than or equal to 6.00×10.sup.8 Nm/rad. A method of operation of such an engine is also disclosed.

The invention relates to a planetary gear box in a gas turbine engine, characterized by at least one protective device in the interior of a casing of the planetary gear box, wherein the protective device is designed and configured to divert at least one particle which is moving in the casing, in particular in an event of damage, and/or to extract kinetic energy from the moving at least one particle, in particular by deformation of the protective device, wherein the protective device is coupled to the casing of the planetary gear box, to a planet gear and/or to a planet carrier. The invention also relates to a gas turbine engine.

A portal unit is provided. The portal unit includes a deceleration gear train and a housing. The housing includes an inner side wall that is formed with an input opening at a position above a rotation axial line of a driving wheel, an outer side wall that is formed with an output opening at a coaxial position with the rotation axial line of the driving wheel, and an intermediate wall that connects peripheral edges of the inner side wall and the outer side wall. The inner side wall is provided, at a radially outward position of the input opening, with mount bolts for the suspension unit. The mount bolts each include a shaft portion protruding inwardly in a vehicle width direction.

A hybrid propulsion system includes a heat engine configured to drive a heat engine shaft. An electric motor is configured to drive an electric motor shaft. A transmission system includes at least one gearbox. The transmission system is configured to receive rotational input power from each of the heat engine shaft and the electric motor shaft and to convert the rotation input power to output power.

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.