Abstract: A motor vehicle 10 includes a hydromechanical powersplit transmission 11, a prime mover 13, an engine drive shaft 14, drive wheels 15, a differential 16, a differential drive shaft 17, and frame rails 18. The transmission 11 includes a connecting plate 25 having a hydraulic side 25a with a pressurized hydraulic chamber 36 filled with hydraulic fluid and a gear set side 25b with an atmospheric pressure gear side chamber 37 partially filled with lubricating oil. The connecting plate 25 provides a hydraulic manifold. A prime mover input shaft 41, 62 extends through the hydraulic chamber 36 and connecting plate 25 and is drivingly connected to one of the planetary gear components 71. Hydraulic pump motor units 42, 43 include hydraulic pump motor unit drive shafts 44, 45 that extend through connecting plate 25 and are drivingly connected to planetary gear components 71.

Abstract: A powersplit transmission having a compact configuration that readily can be incorporated in a vehicle, particularly within the vehicle frame, includes (a) a mechanical transmission having a rotatable input shaft, a rotatable output shaft, and multiple gears for mechanically transmitting power between the input shaft and the output shaft; and (b) a hydraulic transmission containing a fluid for transmitting power between the input shaft and the output shaft. The mechanical transmission has a housing from which the input shaft and the output shaft extend. The hydraulic transmission includes first and second hydraulic units, each of which can function as a pump or a motor. The first hydraulic unit is coupled to the mechanical transmission system and the second hydraulic unit is coupled to the output shaft. The first and second hydraulic units are offset to the same side of the input shaft and the output shaft.

Abstract: A powersplit transmission having a compact configuration that readily can be incorporated in a vehicle, particularly within the vehicle frame, includes (a) a mechanical transmission having a rotatable input shaft, a rotatable output shaft, and multiple gears for mechanically transmitting power between the input shaft and the output shaft; and (b) a hydraulic transmission containing a fluid for transmitting power between the input shaft and the output shaft. The mechanical transmission has a housing from which the input shaft and the output shaft extend. The hydraulic transmission includes first and second hydraulic units, each of which can function as a pump or a motor. The first hydraulic unit is coupled to the mechanical transmission system and the second hydraulic unit is coupled to the output shaft. The first and second hydraulic units are offset to the same side of the input shaft and the output shaft.