A rotary electric machine is disposed coaxially with an input member more toward a first side in an axial direction than a first gear that meshes with a second gear. A third gear rotates integrally with second and fourth gears that mesh with third gear more toward second side in axial direction than first and second gears. An axis of a counter gear mechanism is below axis of rotary electric machine and axis of differential gear mechanism. An inverter device more toward first side in axial direction than fourth gear and above axis of differential gear mechanism while that inverter device overlaps fourth gear as seen in axial direction. A specific portion of inverter device is between rotary electric machine and fourth gear in axial direction, such hat specific portion overlaps counter gear mechanism as seen in up-down direction and overlaps rotary electric machine as seen in axial direction.

Gearboxes for aircraft gas turbine engines, in particular arrangements for journal bearings such gearboxes, and related methods of operating such gearboxes and gas turbine engines, including a gearbox for an aircraft gas turbine engine, the gearbox including: a sun gear; a plurality of planet gears surrounding and engaged with the sun gear; and a ring gear surrounding and engaged with the plurality of planet gears, each of the plurality of planet gears being rotatably mounted around a pin of a planet gear carrier with a journal bearing having an internal sliding surface on the planet gear and an external sliding surface on the pin.

A mechanical system comprising a sump and at least one component to be lubricated or cooled arranged in the sump, the mechanical system comprising a lubricating fluid system provided with a lubricating fluid and a tank arranged in the sump. The tank is a leaking tank and is situated above said at least one component to be lubricated or cooled, the lubricating fluid flowing out of the tank by force of gravity, so as to reach said at least one component to be lubricated or cooled. The lubricating fluid system has at least one lift flow generator connected by at least one filling line to the tank and to at least one suction point present in a bottom of the sump. The lift flow generator fills the tank with the lubricating fluid present in said bottom at least during a starting phase.

An oil management system for a vehicle includes a differential housing, a transmission housing, a lubricant tank, a suction line, a lubricant pump, and an air suction pump. The transmission housing is connected to the differential housing in an air-tight manner, and a lubricant through-passage is defined between the transmission housing and the differential housing. The lubricant tank is provided in the differential housing and has a lubricant suction opening in a lower region. The lubricant pump conveys lubricant from the lubricant tank through the suction line and conducts the lubricant to the lubrication points in the differential housing and the transmission housing. The air suction pump pumps air from the lubricant tank into the transmission housing so that an excess air pressure is maintained in the transmission housing.

A power take-off device for a motor vehicle has a drive input, two drive outputs and a clutch. The first drive output channels drive torque from the power take-off device to propel the motor vehicle. The second drive output channels drive torque from the power take-off device to an auxiliary unit to drive the auxiliary unit. The clutch selectively couples the drive input to the first and second drive outputs. The clutch has three shift positions. In the first shift position, the drive input is coupled to the first drive output and decoupled from the second drive output. In the second shift position, the drive input is coupled to the second drive output and decoupled from the first drive output. In the third shift position, the drive input is coupled to both the first and second drive outputs.

A compact and fast-shifting two-speed transmission for an electric drive system, such as an electric vehicle, has two synchronized dog clutches. A sliding sleeve for engaging a first and second gear is actuatable using a single actuator. A substantially load-interruption-free shifting is realized via a friction engagement in the synchronization. A drive system having such a two-speed transmission is capable of achieving at least substantially load-interruption-free shifting.

A CVT belt cooling system is provided. The system includes a housing that retains within the housing a variable speed motor and a fan blade coupled to the variable speed motor. The system also includes an integrated microprocessor controller coupled to the housing and electrically coupled to the variable speed motor and coupled to a belt temperature sensor. The housing is configured to couple to a housing of a CVT to provide additional cooling air to the CVT belt. The temperature of a belt of the CVT is determined by the belt temperature sensor and based on the determined temperature, and the integrated microprocessor controller controls the speed of the motor and thereby the speed of the fan to control the amount of additional cooling air flowing into the CVT to cool the belt.

A gearbox comprising: an outer intermediate shaft carrying a first set of shaft gears; an inner intermediate shaft carrying a second set of shaft gears, the inner intermediate shaft running concentrically within the outer intermediate shaft; a first lay shaft carrying a first set of drive gears and an output gear positioned along the first lay shaft between two of the first set of drive gears, a second lay shaft carrying a second set of drive gears and an output gear positioned along the second lay shaft between two of the second set of drive gears, each drive gear being coupled to a respective shaft gear to together provide a plurality of gear ratios between the intermediate shafts and the output shaft; and an output shaft, each lay shaft being coupled to the output shaft by the respective output gear.

A hybrid powertrain for an automobile includes a transmission adapted to provide power to wheels of the automobile, an engine adapted to provide power to an input shaft of the transmission, and an electric motor-generator unit adapted to provide power to the input shaft of the transmission, wherein the electric motor-generator is positioned within the transmission, coaxial with the transmission input shaft, the electric motor-generator being supported by and enclosed within a pump support of the transmission.

The present disclosure relates to an in-wheel driving apparatus, and an in-wheel driving apparatus includes a case having an interior space, a first gear disposed in the interior space to be rotatable about a first rotary shaft, a second gear engaged with the first gear and disposed in the interior space to be rotatable about a second rotary shaft, and a first partition wall including a first area provided along a circumference of the first gear and a second area extending from one end of the first area in a direction that is away from the first rotary shaft, and disposed in the interior space.