An energy conserving hydraulic system for a mobile work machine includes a prime mover, a drivetrain, a baseline hydraulic system, a power-take-off, a transformer, a work implement, and an accumulator. The drivetrain may include an automated manual transmission (AMT) that is rotationally coupled to the prime mover and the power-take-off. The baseline hydraulic system is powered by the prime mover and includes a first hydraulic circuit. The transformer is hydraulically coupled to second and third hydraulic circuits. The work implement is actuated by an actuator that is adapted to be simultaneously hydraulically coupled to the first and the second hydraulic circuits. The power-take-off is adapted to exchange shaft power with the transmission. A clutch selectively rotationally couples the transmission and the power-take-off. The accumulator is hydraulically coupled to the second hydraulic circuit. The second hydraulic circuit is hydraulically coupled to a first rotating group of the hydraulic transformer, and a third hydraulic circuit is hydraulically coupled to a second rotating group of the hydraulic transformer.

A power-takeoff (PTO) unit for a work vehicle includes a planetary gear driven by an engine of the work vehicle; a PTO spline connected in power transmission to the planetary gear and defining a gear ratio; a hydrostatic transmission driven by the planetary gear to control the gear ratio; a pressure sensor unit for sensing a differential pressure across a loop of the hydrostatic transmission; and a control unit. The control unit is configured to calculate a differential pressure in the loop from a calibration mathematical model representing an unloaded functioning of the PTO spline. The control unit is also configured to calculate a PTO spline torque from a further mathematical model. The model is based on the pressure drop, on pressure signals from the sensor unit, and on kinematic or hydraulic factors of the planetary gear and the hydrostatic transmission.

A vehicle is disclosed. The vehicle may include a hydraulic system. The vehicle may include a sway bar. The sway bar may be positioned rearward of a hydraulic pump of the hydraulic system. A console having a first hydraulic input may be provided in an operator area of the vehicle.

A hybrid vehicle drive system for a vehicle includes a first prime mover, a first prime mover driven transmission, and a rechargeable power source. The hybrid vehicle drive system further includes an interface between the transmission and the prime mover for coupling to an electric motor. The electric motor can be in direct or indirect mechanical communication with a hydraulic pump. The electric motor can receive power from the prime mover driven transmission through the interface.

An auxiliary power unit system for mobile service vehicles is provided that can provide DC power to DC-powered equipment. The system attaches to the power take-off port of the transmission and can provide power to the DC-powered equipment without idling the engine of the mobile service vehicle, thereby reducing fossil fuel consumption and engine exhaust emissions.

An auxiliary power take-off assembly in a motor vehicle transmission having a torque converter, transmission input and output with a drive shaft on the transmission input. The drive shaft is permanently connected to a drive motor of the vehicle by a pump shaft of the torque converter, a transmission output shaft at the transmission output and a transmission chain having drive input and output elements. A transmission power take-off shaft on the transmission output and a transmission chain having at least a drive element and a power take-off element of which the power take-off element can be connected to an additional unit to be driven, and having a switching element. The power take-off element is arranged on a power take-off shaft and can be connected to the power take-off shaft via the switching element, which is arranged to act between power take-off shaft and the power take-off element.

An auxiliary power take-off assembly in an automatic transmission of a motor vehicle provided with a torque converter, having a transmission input and transmission output having a drive shaft at the transmission input that is permanently connected to a drive motor of the motor vehicle via a pump shaft of the torque converter. A transmission output shaft at the transmission output, and a transmission chain includes at least one drive element and one output element. The output element can be connected to an additional unit to be driven. A switch element, which is arranged so as to act between the drive shaft and the drive element of the transmission chain for optionally connecting the drive shaft to the drive element. The drive element and the output element are designed as gearwheels which are engaged with one another without an intermediate wheel.

A driveline component with a shaft, a friction clutch and a centrifugal valve. The shaft has a supply passage and a feed passage that intersects the supply passage. The centrifugal valve has a valve seat, which is formed on the shaft and intersects the feed passage, a valve element and a flyweight that is pivotally coupled to the shaft. The valve element is received in the valve seat and is movable between a first position, in which the valve element is abutted against the valve seat, and a second position in which the valve element is displaced from the valve seat. The flyweight has a weight and a cam and is configured so that radially outward rotation of the weight in response to centrifugal force causes the cam to drive the valve element toward the first position.

A hydraulic transaxle comprises an axial piston hydraulic pump having a variable displacement, and a transaxle casing incorporating the hydraulic pump. The hydraulic pump includes a movable swash plate and a pair of trunnion shafts. The transaxle casing includes a pair of side walls, and includes a pair of casing holes each of which penetrates each of the side walls between an inside and an outside of the transaxle casing. The pair of trunnion shafts are passed through the respective casing holes. The swash plate is formed with a pair of swash plate holes in the respective side portions facing the respective side walls in the inside of the transaxle casing. Proximal end portions of the respective trunnion shafts are inserted into the respective swash plate holes. A distal end portion of one of the trunnion shafts projects from the corresponding casing hole to the outside of the transaxle casing.

A hydraulic transaxle includes a transaxle casing including an upper transaxle housing and a lower casing, hydrostatic transmission (HST), and an axle. The HST has a hydraulic pump and a hydraulic motor that are fluidly connected to each other. The hydraulic motor has a motor shaft that is drivingly connected to the axle through a reduction gear train that is disposed between the hydraulic pump and the axle. Reduction gear train has a gear shaft supported by the upper transaxle housing via a ball bearing. At least a part of the upper transaxle housing is formed by a gear top cover made of metal and covering the reduction gear train. Ball bearing is supported by the upper transaxle housing and the gear top cover.