Abstract: A device for the steering assistance of a vehicle combination of a towing vehicle and an attached implement in which the attached implement swivels at a rear coupling point of the towing vehicle. The implement includes wheels that are arranged on opposite sides, which can be acted on by the control of corresponding individual wheel drives, independently of one another, with a drive torque. An electronic control unit applies a yawing moment to the implement by the asymmetrical control of the individual wheel drives in such a way that a transverse force exerted on the towing vehicle through the rear coupling point, builds up in the sense of the attainment of a pre-specified steering behavior of the vehicle combination.

Abstract: An infinitely variable transmission (IVT) provides a plurality of transmission modes. At least one mode is a serial mode and at least one other mode is a split-path mode. The IVT provides substantially seamless shifting between the plurality of transmission modes.

Abstract: In accordance with an example embodiment, a transmission may include a first mode in which a low range clutch is engaged and a first synchronizer is in a first engaged condition causing an output shaft to rotate relative to a first range shaft based upon a ratio of a first range gear to a second range gear. The transmission may include a second mode in which a high range clutch is engaged and a second synchronizer is in a first engaged condition causing the output shaft to rotate relative to a second range shaft based upon a ratio of the first range gear to the second range gear. A shift from the first mode to the second mode includes engaging the second synchronizer in the first engaged condition before disengaging the low range clutch and engaging the high range clutch.

Abstract: A method for controlling the driving of at least one drive axle on a trailer of a traction vehicle-trailer combination includes determining a target drive power for the drive axle of the trailer as a function of a distribution of contact forces on the trailer or on the traction vehicle, or as a function of a traction drive power for the traction vehicle. The method further includes providing drive control signals for controlling an electrical drive for the drive axle of the trailer. The drive control signals are derived from the determined target drive power.

Abstract: A group manual transmission has an input shaft and an output shaft, on which gears of gear pairs of at least two switch groups are coaxially arranged, wherein the input shaft can be brought into a drive-connection with the output shaft via a gear pair of a switch group. A coupling shaft is provided, which is non-rotatably connected with a coupling-switch device for the acceptance of several switching positions. In a coupling-switching position, the coupling shaft is drive-connected with a gear pair of a switch group via the coupling-switch device for the transfer of a power flow via the coupling shaft to the output shaft. In an interruption-switching position, the drive connection between the coupling shaft and this gear pair is interrupted.

Abstract: An infinitely variable transmission (IVT) includes a double planetary gearset with first, second, and third transmission components. The IVT includes a single planetary gearset with fourth, fifth, and sixth transmission components. In one mode, a first set of clutches is engaged, allowing transmission of engine power to the first transmission component, and allowing transmission of IVP power between a second IVP machine and the second transmission component. The third transmission component combines the engine power and the IVP power into first combined power that is transmitted from the third transmission component to the fourth transmission component. The fifth transmission component transmits return power to an engine shaft, and the sixth transmission component combines the first combined power and the return power into second combined power that is output to an output shaft for rotating the output shaft at a range of rotational speeds.

Abstract: A retarder brake system of a vehicle combination including an agricultural tractor and an electrically driven trailer includes a drive train with a combustion engine, a vehicle transmission downstream from the combustion engine, a mechanical drive axle of the agricultural tractor connected to a first gear output of the transmission, a first electrical motor generator unit coupled to a second gear output, and an electrical drive axle of the trailer. The electrical drive axle is driven by means of a second electrical motor generator unit. The generator units are electrically connected with one another via a direct current link. In a retarder operation, the second electrical motor unit is operated with a generator and the first electrical generator unit is operated with a motor. At least part of the gross retarder output requested on the electrical drive axle is dissipatively destroyed as a power loss within the drive train.

Abstract: A method for controlling a power-split gear shift device in a vehicle by providing an electric variator and a transmission with variable gear shift and connecting a drive motor to a traction drive of the vehicle. The electric variator has a compound gear train with at least one first and at least one second electric machine. The method also includes providing a controller for the electric machines for steplessly varying a gear shift of the compound gear train. Upon detection of an external power requirement by an electric consumer, a gear shift region of the transmission with variable gear shift is set to operate the first electric machine in a generator mode and to operate the second electric machine to compensate for an existing power deficit or a power excess relative to an external power demand.

Abstract: A device for the steering assistance of a vehicle combination of a towing vehicle and an attached implement in which the attached implement swivels at a rear coupling point of the towing vehicle. The implement includes wheels that are arranged on opposite sides, which can be acted on by the control of corresponding individual wheel drives, independently of one another, with a drive torque. An electronic control unit applies a yawing moment to the implement by the asymmetrical control of the individual wheel drives in such a way that a transverse force exerted on the towing vehicle through the rear coupling point, builds up in the sense of the attainment of a pre-specified steering behavior of the vehicle combination.

Abstract: A retarder brake system of a vehicle combination including an agricultural tractor and an electrically driven trailer includes a drive train with a combustion engine, a vehicle transmission downstream from the combustion engine, a mechanical drive axle of the agricultural tractor connected to a first gear output of the transmission, a first electrical motor generator unit coupled to a second gear output, and an electrical drive axle of the trailer. The electrical drive axle is driven by means of a second electrical motor generator unit. The generator units are electrically connected with one another via a direct current link. In a retarder operation, the second electrical motor unit is operated with a generator and the first electrical generator unit is operated with a motor. At least part of the gross retarder output requested on the electrical drive axle is dissipatively destroyed as a power loss within the drive train.

Abstract: A generator unit is provided for attachment to an agricultural work vehicle with a gear module and a generator module. The gear for the driving of the generator module is connected in a drive system with the generator module, and the gear module and the generator module are hydraulically connected with one another via an integrated cooling and lubricating agent circuit.

Abstract: An energy management system for an agricultural vehicle arrangement includes an electric power supply unit for the supply of a large number of electrical consumers with electric power, and a consumption monitoring unit for the determination of a total energy demand dependent on an actual operating state of the electrical consumers. The consumption monitoring unit undertakes an estimate of the electric power supply available from the electric power supply unit and compares it to the determined total electric power demand in order to reduce the electric power supply to the electrical consumers as a function of assigned supply priorities when the available electric power supply is exceeded by the determined total energy demand. The consumption monitoring unit undertakes a dynamic adaptation of the supply priorities as a function of a changing cooling demand of a vehicle unit that is cooled by means of at least one of the electrical consumers.

Abstract: A system is provided for liquid cooling of an electric motor generator unit. The electric motor generator unit includes a magnetic air gap running between a stator and a rotor, wherein for the cooling of the electric motor generator unit, the air gap is acted on with cooling liquid supplied from the outside. A control device adapts the pressure or the volume flow of the supplied cooling liquid as a function of a determined actual value of an operating temperature variable of the electric motor generator unit.

Abstract: A power-split gearbox device in an agricultural work vehicle. The gearbox device includes a compounded gearbox, an electrical variator for the continuous varying of a ratio of the compounded gearbox, and a gearbox with an adjustable ratio to connect a drive motor with a propulsion of the work vehicle.

Abstract: A method for controlling a power-split gear shift device in a vehicle by providing an electric variator and a transmission with variable gear shift and connecting a drive motor to a traction drive of the vehicle. The electric variator has a compound gear train with at least one first and at least one second electric machine. The method also includes providing a controller for the electric machines for steplessly varying a gear shift of the compound gear train. Upon detection of an external power requirement by an electric consumer, a gear shift region of the transmission with variable gear shift is set to operate the first electric machine in a generator mode and to operate the second electric machine to compensate for an existing power deficit or a power excess relative to an external power demand.

Abstract: Arrangement for the stator cooling of an electric motor, comprising a stator lamination package with a large number of axial stator laminations lined up axially, next to one another, and several axial winding grooves in the stator lamination package for the holding of corresponding stator windings. In accordance with the invention, a radial recess formed in one of the stator laminations leads into each of the winding grooves, wherein the radial recess communicates with a cooling liquid conduit provided on the stator lamination package for the delivery of cooling liquid.

Abstract: An infinitely variable transmission includes a clutch, a brake and a first planetary gear set, including first and second components, and a double planetary gear set, including input and output components and additional third and fourth components. The first component receives power from an engine. The double planetary set sums mechanical power from the first planetary set and an infinitely variable power source (“IVP”). The third component receives mechanical power from a IVP. The second component directly transmits power to the input component. The clutch directly controls power transmission between the first and second components. The brake engages the fourth component to stop its rotation. The output component receives mechanical power directly from the input component and the fourth component. During operation of the engine, controlled actuation of the brake and the clutch causes the output component to be powered by the infinitely variable power source but not by the engine.

Abstract: An infinitely variable transmission includes a clutch, a brake and a first planetary gear set, including first and second components, and a double planetary gear set, including input and output components and additional third and fourth components. The first component receives power from an engine. The double planetary set sums mechanical power from the first planetary set and an infinitely variable power source (“IVP”). The third component receives mechanical power from a IVP. The second component directly transmits power to the input component. The clutch directly controls power transmission between the first and second components. The brake engages the fourth component to stop its rotation. The output component receives mechanical power directly from the input component and the fourth component. During operation of the engine, controlled actuation of the brake and the clutch causes the output component to be powered by the infinitely variable power source but not by the engine.

Abstract: A power train arrangement for a work vehicle with an engine may include an infinitely variable power source (“IVP”). An energy storage device may be configured to receive energy from the IVP for storage and to provide stored energy from the energy storage device to power one or more components of the IVP. A transmission may be configured to relay power from the engine and from the one or more components of the IVP to other components of the vehicle. A transient power event may be identified, during which a present operating state of the engine does not provide sufficient power for operations of the work vehicle. The energy storage device may be caused to provide stored energy to power the one or more components of the IVP source and thereby to provide power to the transmission.

Abstract: The invention relates to a drive system (10) for an agricultural or industrial vehicle, preferably a tractor (12). Said drive system (19) comprises at least one electric generator (24, 26) as well as a first and a second electric machine (28, 30). The at least one electric generator (24, 26) can be driven using torque generated by a vehicle engine (22). At least one of the two electric machines (28, 30) can be driven using the electric power generated by the electric generator (24, 26). The mechanical torque generated by the first and/or the second electric machine (28, 30) can be transmitted to at least one driving axle (14, 16) of the vehicle in order to allow the vehicle to move. The invention further relates to an agricultural vehicle comprising such a drive system (10).