Abstract: Methods and systems for a multi-ratio gear box and four speed transmission are provided. In one example, a first shaft is coupled to one or more input speed reduction gear sets. A second shaft is coupled to a multi-range clutch having a first position and a second position allowing for two speeds. A third shaft is coupled to a low-speed clutch and a fourth shaft is coupled to a high-speed clutch, together doubling the number of speeds. The high and low-speed clutches provide a large gear spread that allow the multi-range clutches to have a reduced gear spread, overall reducing the required size of the transmission. A fifth shaft, coupled to the fourth shaft via a gear, may be an output shaft spaced away from the electric motors, thereby creating a short flange to flange distance.

Abstract: Systems and a method are provided for a transmission system. In one example, a system includes a first input shaft coupled to a first prime mover and a first motor gear, a second input shaft coupled to a second prime mover and a second motor gear, a planet carrier coupled to a planetary shaft engaged to a first clutch via a planetary gear and a first clutch gear or to a second clutch shaft of a second clutch on which a second clutch gear is arranged, and an output shaft, wherein the first clutch gear is arranged on the output shaft, further comprising an output shaft gear arranged on the output shaft and meshed with the second clutch gear.

Abstract: An electric machine system is provided. The system includes a stack of a plurality of stator laminations with at least a portion of the plurality of stator laminations each including a plurality of holes that are arranged radially outward from a plurality of teeth, where the plurality of holes include a first set of holes, a second set of holes, and a third set of holes, where the first, second, and third sets of holes has a different profile and/or area, where the second set of holes are positioned radially inward from the third set of holes; and where a plurality of oil channels are formed by an alignment of holes in adjacent stator laminations in the portion of the plurality of stator laminations.

Abstract: The present document relates to a transmission assembly with multiple gear ratios, comprising: a range gearbox having at least two selectable range gear ratios and comprising a first shaft, a low/high speed mode selection unit for selecting a low-speed mode or a high-speed mode and comprising a third shaft and a first output shaft, wherein the range gearbox and the low/high speed mode selection unit being sequentially disposed in a downstream direction of a transmission power flow, and wherein the first shaft, the third shaft and the first output shaft are offset from one another.

Abstract: Embodiments for a torque vectoring unit for an electric vehicle are provided herein. In an example, a torque vectoring unit includes an inner rotor, an outer rotor enclosing the inner rotor, and a stator enclosing the outer rotor, with the inner rotor, the outer rotor and the stator being concentrically arranged to one another. The inner rotor is drivingly connectable to a first wheel and the outer rotor is drivingly connectable to a second wheel, and the inner rotor and the outer rotor represent a first electric motor and the outer rotor and the stator represent a second electric motor.

Abstract: The present disclosure relates to a transmission for a vehicle having a power source, the transmission comprising: an input member for receiving power from the power source; an output member for outputting power to at least one component of the vehicle; at least one power split gear set having a plurality of members and operatively connected between said input member and said output member; an electromagnetic variator having a stator, an outer rotor and an inner rotor; wherein the inner rotor is at least partially received in the outer rotor and the electromagnetic variator is configured to provide variable torque transmission ratios between the outer rotor and inner rotor; and wherein said first and second rotors are each operatively connectable to different ones of said members of said power split gear set and are each operatively connectable to the input member to be driven thereby.

Abstract: A steering system for a vehicle is provided. The steering system includes a mechanical interface coupled to an auxiliary hydraulic steering pump and an output of a transmission. In the system, the transmission is mechanically coupled to a motive power source and the auxiliary hydraulic steering pump is hydraulically coupled to a hydraulic steering assembly.

Abstract: Methods and systems are provided for driveline control and diagnostics. In one example, a vehicle system may include a controller with instructions stored in a first memory unit and when executed by a first processing unit cause the controller to write mechanical vehicle component operating data to a shared memory unit. The controller further includes instructions stored in a second memory unit that when executed by a second processing unit cause the controller to read the mechanical vehicle component operating data to determine data validity.

Abstract: An electric driveline system is provided. The electric driveline system includes a first electric machine and a second electric machine mechanically coupled to a transmission and a power take-off (PTO) assembly coupled to the first electric machine. The PTO assembly includes a first clutch coupled to a PTO gearset and designed to selectively disconnect a PTO from the first electric machine and the PTO gearset is mechanically coupled to the first electric machine.

Abstract: Methods and systems for a vehicle transmission are provided. An electromechanical transmission system includes, in one example, a power take-off (PTO) clutch configured to, in a first position, permit a motive power source shaft to solely drive a PTO. The PTO clutch is further configured to, in a second position, permit a first electric machine and a second electric machine to continuously vary a torque that is supplied to the PTO by the motive power source shaft.

Abstract: A cooling jacket surrounding the stator of an electric machine, having an inlet and a plurality of outlets disposed at ends of the cooling jacket, distributed in circumferential direction and configured to create liquid jets exiting the cooling jacket in a radial direction towards end windings at the axial ends of the machine. Coolant liquid flow guiding elements within the cooling jacket are configured so as to create a circumferentially homogeneous or more homogenous axial liquid flow towards the liquid outlets and/or towards the liquid jet devices.

Abstract: Methods and systems are provided for controlling and diagnosing a mechanical vehicle component. In one example, a method may include determining a vehicle speed and a plurality of clutch position settings at a diagnostic controller, and identifying unauthorized conditions based on these determinations. Further, the diagnostic controller may trigger an active fault state of the mechanical vehicle component in order to avoid unauthorized conditions that may lead to unwanted or unanticipated changes in vehicle motion.

Abstract: Systems and methods for an electric drive unit are provided. A transmission system in an electric drive unit, in one example includes an input shaft rotationally coupled to each of a first electric machine and a second electric machine and a first clutch arranged coaxial to a first countershaft, where a first gear is fixedly coupled the first clutch and meshes with a second gear that is fixedly coupled to the input shaft. The transmission system further includes a second clutch arranged coaxial to a second countershaft and spaced away from the first countershaft and a third gear that is fixedly coupled to the second clutch and meshes with the first gear, where the first clutch and the second clutch are configured to shift the transmission system between multiple gear ratios and deliver mechanical power to an output shaft that is spaced away from the second countershaft.

Abstract: Systems and methods for a multi-speed electric axle. The multi-speed electric axle includes an electric motor that is rotationally coupled to an input shaft. The multi-speed electric axle also includes a planetary gearset connected to the input shaft via an input gear reduction, a lower-speed clutch that selectively grounds a ring gear in the planetary gearset to a housing, and a higher-speed clutch that selectively connects a sun gear to a carrier.

Abstract: The present disclosure relates to a method and an apparatus for controlling a lubricant flow rate in a wet clutch. The method comprising: determining a clutch state as an open state, a closed state or a slipping state; determining a clutch temperature and a sump lubricant temperature; based at least on the clutch state, the clutch temperature and the sump lubricant temperature, selecting one out of a plurality of maps, wherein each map maps one or more operating parameters of the clutch on a target lubricant flow rate; determining a target lubricant flow rate based on the one or more operating parameters according to the selected map; and controlling a lubricant flow control device based on the determined target lubricant flow rate.

Abstract: A system for a driveline is provided. In one example a driveline may include a first and a second input shaft gear disposed on an input shaft. In one example, the first input shaft gear may selectively drivingly engage with the input shaft via a first clutch and the second input shaft gear may selectively drivingly engage with the input shaft via a second clutch. In another example, a first and a second counter shaft gear may be disposed on a countershaft and drivingly engage with the countershaft, wherein the first input shaft gear drivingly engages with the first countershaft gear and the second input shaft gear is drivingly engages with the second countershaft gear via an idler gear.

Abstract: Methods and systems are provided for a dual motor electric transmission configured with two dual synchronizers to reduce torque interruption during gear shifting. In one example, a method may include dropping torque of a first electric motor, allowing a first synchronizer to shift from a first gear arrangement to a second gear arrangement, and compensating for dropped torque with a second electric motor. The method may be repeated to shift a second synchronizer from the first gear arrangement to the second gear arrangement, allowing uninterrupted torque supply during gear shifting.

Abstract: Methods and systems are provided for a vehicle. In one example, a method for the vehicle includes adjusting an output torque of an electric machine to produce a desired vehicle speed and direction of propulsion while operating an auxiliary load powered via the transmission. The output torque may be adjusted while disengaging clutches of a transmission or a service brake to mechanically unlock an output shaft of the transmission. The first electric machine may be operated in a speed control to learn an amount to torque to hold the vehicle speed at zero and the amount of learned torque may be superimposed with an amount of requested torque upon vehicle launch.

Abstract: Methods and systems for operating a driveline disconnect clutch actuator are provided. In one example, the driveline disconnect clutch actuator may be supplied with electric power to activate and deactivate a driveline disconnect clutch when electric power is available via a first power source. The driveline disconnect clutch actuator may be supplied with electric power to open the driveline disconnect clutch when output from the first driveline disconnect clutch is unavailable.

Abstract: Methods and systems for cooling an electric motor are provided. An electric motor system, in one example, comprises a rotor with a plurality of axial air conduits, a first balancing plate positioned on a first axial side of the rotor, the first balancing plate comprising an inlet air duct and an outlet air duct, and a second balancing plate positioned on a second axial side of the rotor, the second balancing plate comprising an inlet air duct and an outlet air duct. In the electric motor system, the inlet air duct in the first balancing plate is radially offset from the inlet air duct in the second balancing plate.