Abstract: Systems and methods for an electric machine. The electric machine system includes, in one example, a housing circumferentially surrounding a stator, a cover removably coupled to the housing, and multiple shims and/or springs arranged between an axial end of the stator and the cover. In the system, the shims and/or springs preload the stator and a clearance fit is formed between an inner diameter of the housing and an outer diameter of the stator.

Abstract: A system and method for a hybrid electric axle. The hybrid electric axle system, in one example, includes an engine interface assembly with an input shaft with a mechanical interface that is configured to receive mechanical power from an internal combustion engine. The system further includes an electric drive assembly that includes a traction motor that is rotationally coupled to a gear train and an electric drive disconnect clutch configured to selectively rotationally couple the gear train to a differential. Further, in the electric axles system, the engine interface assembly and the electric drive assembly are packaged in an axle housing.

Abstract: A system and method for an electric axle. The electric axle includes, in one example, a traction motor, an input planetary gear set arranged coaxial to the traction motor and including a sun gear rotationally coupled to the traction motor, a carrier including a first section coupled to multiple carrier shafts and a second section removably coupled to the multiple carrier shafts, and multiple planet gears rotationally mounted on the multiple carrier shafts. In the electric axle, the second section is rotationally coupled to a downstream component and the downstream component is arranged coaxial to the input planetary gear set.

Abstract: A system and method for a hybrid electric axle. The hybrid electric axle system, in one example, includes an engine interface assembly with a one-way clutch that is rotationally coupled to an input shaft and a gear shaft in a gear set that is rotationally coupled to a differential and a dog clutch configured to selectively rotationally couple the input shaft and the gear shaft in the gear set. The hybrid electric axle system further includes an electric drive assembly including a traction motor that is rotationally coupled to a gear train. In the electric axle system, the gear train is rotationally coupled to the differential and the engine interface assembly and the electric drive assembly are packaged in an axle housing.

Abstract: An electric drive axle in a vehicle is provided. The electric drive axle includes, in one example, a housing configured to enclose an electric motor-generator and a gearbox. In the electric drive axle, the housing includes a first section that is removably coupled to a second section, the second section at least partially encloses the gearbox, the first section includes a first axle shaft opening, and the second section includes a second axle shaft opening that is laterally aligned with the first axle shaft opening.

Abstract: A system and method for a multi-speed electric axle. The multi-speed electric axle includes, in one example, an electric machine rotationally coupled to sun gear in a first planetary gear set, a second planetary gear set rotationally coupled to a carrier in the first planetary gear set, a third planetary gear set rotationally coupled to the second planetary gear set, and a differential rotationally coupled to the third planetary gear set. In the multi-speed electric axle, the electric machine, the first planetary gear set, the second planetary gear set, the third planetary gear set, and the differential are coaxially arranged.

Abstract: Systems and method for an electric axle assembly. The electric axle assembly includes, in one example, an electric machine rotationally coupled to a planetary differential and a first and second axle shaft directly rotationally coupled to the planetary differential. In the axle assembly, the second axle shaft is longer than the first axle shaft and the electric machine is positioned laterally between a first drive wheel shaft and a second drive wheel shaft that are rotationally coupled to the first axle shaft and the second axle shaft.

Abstract: A system and method for an actuation assembly for a transmission. The actuation assembly, in one example, includes a first cam device that is idly coupled to a support shaft and a second cam device idly coupled to the support shaft. The actuation assembly further includes a first one-way clutch which is coupled to the first cam device and an idler gear that is rotationally coupled to an actuator and a second one-way clutch that is coupled to the second cam device and the idler gear that is rotationally coupled to the actuator.

Abstract: A system and method for an electric axle. The electric axle includes, in one example, a traction motor, an input planetary gear set arranged coaxial to the traction motor and including a sun gear rotationally coupled to the traction motor, a carrier including a first section coupled to multiple carrier shafts and a second section removably coupled to the multiple carrier shafts, and multiple planet gears rotationally mounted on the multiple carrier shafts. In the electric axle, the second section is rotationally coupled to a downstream component and the downstream component is arranged coaxial to the input planetary gear set.

Abstract: A system and method for an electric axle. The electric axle includes, in one example, a traction motor and an input planetary gear set arranged coaxial to the traction motor. The input planetary gear set includes a sun gear rotationally coupled to the traction motor, a carrier including a first section coupled to multiple carrier shafts and a second section removably coupled to the multiple carrier shafts, and multiple planet gears rotationally mounted on the multiple carrier shafts. The electric axle further includes a differential coupled to the downstream component and in the electric axle, the differential is positioned parallel to and offset from the traction motor, the second section is rotationally coupled to a downstream component and the downstream component is arranged coaxial to the input planetary gear set.

Abstract: A system and method for a multi-speed electric axle. The multi-speed electric axle includes, in one example, an electric machine rotationally coupled to an input shaft, a planetary gear set including a ring gear meshed with a gear fixedly coupled to the input shaft and a carrier that is rotationally coupled to a shaft, a first clutch configured to selectively ground a sun gear in the first planetary gear set, and a second clutch configured to selectively rotationally couple a sun gear in the planetary gear set with the shaft.

Abstract: Systems and methods for an electric axle. The electric axle includes, in one example, a first electric machine directly coupled to a sun gear of a planetary gear set and a second electric machine directly coupled to a carrier of a planetary gear set. The planetary gear set includes a set of planet gears that rotate on the carrier and an output gear that meshes with an input gear in a differential.

Abstract: A system and method for an electric axle. The electric axle includes, in one example, a traction motor and an input planetary gear set arranged coaxial to the traction motor. The input planetary gear set includes a sun gear rotationally coupled to the traction motor and a carrier rotationally coupled to a shift sleeve. The electric axle further includes a multi-speed planetary gear set that is arranged coaxial to the input planetary gear set and a shift assembly that includes the shift sleeve positioned axially between the input planetary gear set and the multi-speed planetary gear set.

Abstract: An electric drive axle with a two-speed gearbox and shifting system is described herein that advantageously reduces a size and volume of the electric drive axle for tight cross-car packaging in a constrained environment for integration of the gearbox with an electric machine, inverter, and differential. The gearbox includes higher and lower range planetary gear sets that are arranged coaxially with the electric machine. The higher and lower range planetary gear sets can be operated in a higher range mode, where mechanical power from an electric machine bypasses the lower range planetary gear set, and in a lower range mode, where mechanical power from the electric machine travels through the lower range planetary gear set and the higher range planetary gear set. The described configuration expands a functionality of the gearbox and increases the axle's capability with regard to operating range and driving environment.

Abstract: An electric axle is provided. The electric axle includes, in one example, an electric machine rotationally coupled to a layshaft via a first gear reduction and a differential rotationally coupled to the first gear reduction, a first axle shaft, and a second axle shaft. In the electric axle, the electric machine is positioned laterally between at least two drive wheels that are rotationally coupled to the first axle shaft and the second axle shaft and a rotational axis of the electric machine is axially offset from rotational axes of the at least two drive wheels.

Abstract: Methods and systems for provide an axle system operated by a single motor to independently operate both a parking system and a disconnect system by changing rotation of a motor shaft and a method for controlling parking operation and clutch operation using the single motor. In another embodiment, the approaches disclosed herein include a line of axles wherein different variants of the electric axles may be configured with one of a parking system and a disconnect system, both the parking system and the disconnect system, and neither of the parking system and the disconnect system.

Abstract: An electric axle is provided. The electric axle includes, in one example, a first electric machine directly coupled to a first planetary gear set, a second electric machine directly coupled to a second planetary gear set and a housing. The housing includes a first section that encloses the first electric machine and the first planetary gear set, a second section that encloses the second electric machine and the second planetary gear set, and a decreased diameter section that extends between the first section and the second section.

Abstract: Methods and systems for an electric drive axle of a vehicle are provided. An electric drive axle system includes, in one example, a gear train configured to rotationally attach to an electric motor-generator. The gear train includes an output shaft rotationally coupled to a first planetary gear assembly axially offset from an input shaft rotationally coupled to the electric motor-generator, the first planetary gear assembly configured to removably couple to a differential arranged co-axial with an axle.

Abstract: A system and method for an actuation assembly for a transmission. The actuation assembly, in one example, includes a first cam device that is idly coupled to a support shaft and a second cam device idly coupled to the support shaft. The actuation assembly further includes a first one-way clutch which is coupled to the first cam device and an idler gear that is rotationally coupled to an actuator and a second one-way clutch that is coupled to the second cam device and the idler gear that is rotationally coupled to the actuator.

Abstract: A system and method for a multi-speed electric axle. The multi-speed electric axle includes, in one example, an electric machine rotationally coupled to an input shaft, a planetary gear set including a ring gear meshed with a gear fixedly coupled to the input shaft and a carrier that is rotationally coupled to a shaft, a first clutch configured to selectively ground a sun gear in the first planetary gear set, and a second clutch configured to selectively rotationally couple a sun gear in the planetary gear set with the shaft.