Abstract: A drive assembly for a work vehicle includes an electric machine input arrangement with a first electric machine configured to generate a first source of power, an electric machine input gear assembly configured to receive the first source of power from the first electric machine, and a second electric machine configured to generate a second source of power. The drive assembly further includes a combination gear arrangement coupled to selectively receive the first source of power from the electric machine input gear assembly and the second source of power from the second electric machine to produce a combined power; and an electric machine output arrangement configured to receive and transfer the combined power from the combination gear arrangement.

Abstract: A hydraulic system for a work vehicle has a first hydraulic circuit at a first nominal pressure and a second hydraulic circuit at a second nominal pressure different than the first nominal pressure. A dual-chamber hydraulic reservoir includes a first tank associated with the first hydraulic circuit and defining a first opening and a second tank associated with the second hydraulic circuit and defining a second opening. An exchange system has a particulate filter disposed within an exchange path between the first opening of the first tank and the second opening of the second tank. The exchange system is configured to resupply the first tank with hydraulic fluid from the second tank.

Abstract: A torsional fuse in a drivetrain system, an epicyclic gear system, and a method of operating a drivetrain system are provided. The epicyclic gear system includes a housing, a shaft configured to rotate relative to the housing, a sun gear being disposed concentric to the shaft, a plurality of planet gears disposed around the sun gear, a ring gear disposed around the plurality of planet gears, a carrier connecting the plurality of planet gears, and a torsional fuse defined by an interface between a first torsional fuse portion and a second torsional fuse portion, the torsional fuse being configured to allow rotation between the first torsional fuse portion and the second torsional fuse portion upon application of a threshold torque at the torsional fuse.

Abstract: A hydraulic supply system provides hydraulic power to functional systems of a work vehicle and includes first and second hydraulic circuits. The first hydraulic circuit includes a first fluid pump operable to generate a first hydraulic fluid, a pressure storage reservoir coupled with the first fluid pump, and a first port coupled with the first fluid pump and with the pressure storage reservoir operable to store a reserve hydraulic fluid. The first port delivers a boost hydraulic fluid from the first circuit for use by the work vehicle to operate a first functional system of the work vehicle. The second hydraulic circuit includes a second fluid pump that generates a second hydraulic fluid, and a second port coupled with the second fluid pump delivers the second hydraulic fluid from the second hydraulic circuit for use by the work vehicle to operate a second functional system of the work vehicle.

Abstract: A hydraulic supply system provides hydraulic power to functional systems of a work vehicle and includes first and second hydraulic circuits. The first hydraulic circuit includes a first fluid pump operable to generate a first hydraulic fluid, a pressure storage reservoir coupled with the first fluid pump, and a first port coupled with the first fluid pump and with the pressure storage reservoir operable to store a reserve hydraulic fluid. The first port delivers a boost hydraulic fluid from the first circuit for use by the work vehicle to operate a first functional system of the work vehicle. The second hydraulic circuit includes a second fluid pump that generates a second hydraulic fluid, and a second port coupled with the second fluid pump delivers the second hydraulic fluid from the second hydraulic circuit for use by the work vehicle to operate a second functional system of the work vehicle.

Abstract: A tandem wheel assembly for a work vehicle includes a tandem wheel housing having a center opening disposed about a pivot axis and first and second wheel end openings disposed about associated first and second wheel axes that are substantially parallel with the pivot axis. A center sprocket within the tandem wheel housing is rotatable about the pivot axis. First and second wheel end assemblies include first and second wheel end shafts, sprockets and housings. The first and second wheel end sprockets are mounted to the associated shafts and are aligned to engage the center sprocket with at least one chain which transfers rotation of the center sprocket about the pivot axis to rotate the first and second wheel end sprockets about the associated first and second wheel axes. The first and second wheel end housings support the first and second wheel end shafts for relative rotation about the associated first and second wheel axes.

Abstract: A drive assembly for a work vehicle includes a drive housing including a first housing element forming a reaction member; a drive shaft; a planetary gear set coupled to the drive shaft and configured to selectively rotate an output element in the first rotation direction and in the second rotation direction; a first clutch arrangement including a first clutch ring and a second clutch ring; and a second clutch arrangement to interface with the planetary gear set to selectively effect a second rotation speed of the output element in the first rotation direction and in the second rotation direction. The first clutch ring is configured to effect a first rotation speed of the output element in the second rotation direction and the second clutch ring is configured to effect the first rotation speed of the output element in the first rotation direction.

Abstract: A drive assembly for a work vehicle includes a drive housing including a first housing element forming a reaction member; a drive shaft; a planetary gear set coupled to the drive shaft and configured to selectively rotate an output element in the first rotation direction and in the second rotation direction; a first clutch arrangement including a first clutch ring and a second clutch ring; and a second clutch arrangement to interface with the planetary gear set to selectively effect a second rotation speed of the output element in the first rotation direction and in the second rotation direction. The first clutch ring is configured to effect a first rotation speed of the output element in the second rotation direction and the second clutch ring is configured to effect the first rotation speed of the output element in the first rotation direction.

Abstract: A bi-directional drive assembly for a work vehicle has a reaction member fixed with respect to or a part of a drive housing. A driveshaft is rotatable about a drive axis relative to the reaction member in a first rotation direction and alternatively in a second rotation direction. A planetary set is coupled to the drive shaft and configured to rotate an output hub in the first or second rotation direction. A clutch assembly is coupled to the reaction member and includes a first clutch and a second clutch. The first clutch is configured to interface the planetary set with the reaction member to effect a first rotation speed of the output hub in the first rotation direction and alternatively the second rotation direction. The second clutch is configured to interface the planetary set with the reaction member to effect a second rotation speed of the output hub in the first rotation direction and alternatively the second rotation direction.

Abstract: A combination starter-generator device is provided for a work vehicle having an engine. The starter-generator device includes an electric machine and a gear set configured to receive rotational input from the electric machine and the engine. The gear set includes a ring gear formed by a cylindrical base with a perimeter surface facing the engine and a circumferential row of castellations extending in a radial direction from the perimeter surface. The starter-generator device further includes a mounting arrangement comprising a drive plate configured to be secured to a crank shaft of the engine and a flex plate mounted to the drive plate. The flex plate includes a row of engagement apertures configured to receive the castellations of the ring gear to rotationally couple the ring gear to the engine via the mounting arrangement.

Abstract: A tandem wheel assembly or kit has a housing that includes a central chain box, a first wheel end casing, and a second wheel end casing. The central chain box has an internal volume extending between a first box end and a second box end, a unitary pivot portion having a box opening disposed about a pivot axis, a first box flange with a first box flange face and a second box flange with a second box flange face. The first wheel end casing has a first wheel end flange with a first wheel end flange face mateable with the first box flange face, a first wheel end opening, and defines a first length. The second wheel end casing has a second wheel end flange with a second wheel end flange face mateable with the second box flange face, a second wheel end opening, and defines a second length.

Abstract: A limited oil displacement system is positioned within a tandem housing of a tandem of a work vehicle. The tandem includes a tandem oil where a chain assembly is at least partially submerged. The limited oil displacement system may include one or more oil displacement unit used for displacing the tandem oil. The oil displacement unit has an upper portion and a lower portion coupled to and positioned under the upper portion. A volume of the upper portion is larger than a volume of the lower portion such that when the tandem of the work vehicle pivots about a lateral axis, the oil displacement unit displaces the tandem oil more than when the tandem of the work vehicle remains horizontally.

Abstract: A combination starter-generator device is provided for a work vehicle having an engine. The starter-generator device includes an electric machine; and a gear set configured to receive rotational input from the electric machine and from the engine and to couple the electric machine and the engine in a first power flow direction and a second power flow direction. The gear set is configured to operate in one of multiple relatively high-torque, low-speed start gear ratios in the first power flow direction and a relatively low-torque, high-speed gear ratio in the second power flow direction.

Abstract: A clutch assembly includes a housing, a rotational member configured to rotate relative to the housing about an axis, and a clutch pack coupled between the housing and the rotational member. The clutch pack is configured to regulate movement of the rotational member relative to the housing. The clutch pack includes a speed sensor ring coupled to the rotational member such that the speed sensor ring is configured to rotate with the rotational member about the axis. The clutch assembly includes a sensor in communication with the speed sensor ring. The sensor is configured to measure an angular velocity of the rotational member relative to the housing.

Abstract: A torsional fuse in a drivetrain system, an epicyclic gear system, and a method of operating a drivetrain system are provided. The epicyclic gear system includes a housing, a shaft configured to rotate relative to the housing, a sun gear being disposed concentric to the shaft, a plurality of planet gears disposed around the sun gear, a ring gear disposed around the plurality of planet gears, a carrier connecting the plurality of planet gears, and a torsional fuse defined by an interface between a first torsional fuse portion and a second torsional fuse portion, the torsional fuse being configured to allow rotation between the first torsional fuse portion and the second torsional fuse portion upon application of a threshold torque at the torsional fuse.

Abstract: A combination starter-generator device includes an electric machine and a gear set configured to couple the electric machine and the engine in first and second power flow directions. The gear set is configured to operate in one of at least a first mode, a second mode, or a third mode in the first power flow direction and at least a fourth mode in the second power flow direction. The starter-generator device includes a clutch arrangement with at least one clutch selectively coupled to the gear set to effect the first, second, and third mode in the first power flow direction and the fourth mode in the second power flow direction; and a cam plate configured to shift the at least one clutch between a disengaged position and an engaged position relative to the gear set.

Abstract: A combination starter-generator device is provided for a work vehicle having an engine. The starter-generator device includes an electric machine; a gear set configured to couple the electric machine and the engine in first and second power flow directions, the gear set configured to operate in one of at least first, second, and third gear ratios in the first power flow direction and at least a fourth gear ratio in the second power flow direction; at least one clutch selectively coupled to the gear set to effect the first, second, and third gear ratios in the first power flow direction and the fourth gear ratio in the second power flow direction; and an actuator assembly including at least one electromagnet configured to selectively shift the at least one clutch between disengaged and engaged positions.

Abstract: A combination starter-generator device for a work vehicle includes an electric machine and a bi-directional gear set. The gear set is configured to receive rotational input from the electric machine and from the engine and to couple the electric machine and the engine in a first power flow direction and a second power flow direction. In the first power flow direction the gear set effects a first gear ratio, and in the second power flow direction the gear set effects a second gear ratio. In the first power flow direction, the gear set receives input power from the electric machine in a first clock direction and outputs power to the engine in a second clock direction opposite the first clock direction. In the second power flow direction, input power from the engine is in the second clock direction and output power to the electric machine is in the second clock direction.

Abstract: A combination starter-generator device is provided for a work vehicle having an engine. The starter-generator device includes an electric machine and a gear set configured to receive rotational input from the electric machine and engine. The gear set is configured to operate in one of at least a first, second, or third gear ratio in a first power flow direction and at least a fourth gear ratio in a second power flow direction. The starter-generator device further includes at least one clutch selectively coupled to the gear set to effect the gear ratios and an actuation assembly including at least one electromechanical solenoid device configured to selectively shift the at least one clutch from a disengaged position in which the at least one clutch is decoupled from the gear set into an engaged position in which the at least one clutch is coupled to the gear set.

Abstract: A combination starter-generator device is provided for a work vehicle having an engine. The starter-generator device includes an electric machine and a gear set configured to receive rotational input from the electric machine and from the engine and to couple the electric machine and the engine in a first power flow direction and a second power flow direction. The gear set is configured to operate a first, second, or third gear ratio in the first power flow direction and a fourth gear ratio in the second power flow direction. At least one clutch is selectively coupled to the gear set to effect the first, second, and third gear ratios in the first power flow direction and the fourth gear ratio in the second power flow direction. A magnetic cam assembly is configured to shift the at least one clutch from a disengaged position into an engaged position.