An axle assembly having a countershaft transmission. The countershaft transmission may operatively connect a rotor shaft of an electric motor to a drive pinion that may be rotatable about a drive pinion axis. The electric motor and the countershaft transmission may be positioned on opposite sides of a differential assembly.

A reducer, an electric vehicle drive system with the reducer, and a control method for the electric vehicle drive system with the reducer comprises, in a reducer, a first countershaft is transmittingly connected to a first input shaft, a second countershaft is transmittingly connected to a second input shaft, and a centralized driving piece is transmittingly connected to a power input end of a differential apparatus. A first transmission assembly and a second transmission assembly are respectively configured to connect or disconnect power transmission between the first countershaft and the centralized driving piece and connect or disconnect transmission assembly power transmission between the second countershaft and the centralized driving piece. A first output shaft and a second output shaft are transmittingly connected to two power output ends of the differential apparatus respectively.

An axle assembly for a vehicle includes a frame, a motor, and a pair of gear reduction subassemblies. The frame extends between a first distal end and a second distal end. The second distal end opposes the first distal end. The motor is secured to the frame between the first distal end and the second distal end. The pair of gear reduction subassemblies are rotatably coupled to the first distal end and the second distal end and configured to drive rotation from the motor to a pair of wheels. Each gear reduction subassembly includes a plurality of gears defining a plurality of gear ratios.

A disconnect assembly, including: a selector; a first clutch including a first sleeve; and a second clutch including a second sleeve. In a drive mode, the first sleeve non-rotatably connects a first drive gear and a first axle of a first drive train, and the second sleeve is non-rotatably connects a second drive gear to a second axle of a second drive train. In a disconnect mode, relative rotation between the first drive gear and the first axle is enabled and relative rotation between the second drive gear and the second axle is enabled. To transition from the drive mode to the disconnect mode, the selector is displaced by an actuator, the selector is arranged to disconnect the first annular sleeve from the first drive gear or the first axle, and the selector is arranged to disconnect the second annular sleeve from the second drive gear or the second axle.

Methods and systems are provided for a motorized disconnect operable to selectively engage and disengage two rotating components of a vehicle drivetrain. As one example, a motorized disconnect system is provided that operates via an electric motor and includes a shifter assembly with an oscillating gear track and cam profile for rotating the shifter assembly while moving it in an axial direction to selectively couple two rotating components.

This disclosure provides a reducer (100), an electric vehicle drive system, and a control method for the electric vehicle drive system. In the reducer (100), a first countershaft (2a) is transmittingly connected to a first input shaft (1a), a second countershaft (2b) is transmittingly connected to a second input shaft (1b), and a centralized driving piece (5) is transmittingly connected to a power input end of a differential apparatus (4). A first transmission assembly (X1) and a second transmission assembly (X2) are respectively configured to connect or disconnect power transmission between the first countershaft (2a) and the centralized driving piece (5) and connect or disconnect transmission assembly power transmission between the second countershaft (2b) and the centralized driving piece (5). A first output shaft (3a) and a second output shaft (3b) are transmittingly connected to two power output ends of the differential apparatus (4) respectively.

Described is a device for synchronization of a reverse gear for a vehicle gearbox including: a support shaft fixed in rotation; an idle gear wheel for engagement with a first reverse gear wheel on a gearbox primary shaft and a second reverse gear wheel on a gearbox secondary shaft, said idle gear wheel mounted rotatable and axially slidable on said support shaft and having a hub including a first friction surface; and a synchronizer ring mounted mobile on said support shaft along an axial travel and countered axially by an elastic element along said axial travel, said synchronizer ring having a second friction surface for engagement with said first friction surface. Axial movement of the idle gear wheel towards an engagement position of the reverse gear causes drawing of the synchronizer ring implementing, prior to reverse gear engagement, braking of rotary movement of the idle gear wheel.

A torque transmission apparatus having a shift collar and a drive component. The shift collar may have a collar gear that may have a collar tooth that may have a concave collar tooth side surface that may be centered about a transverse collar tooth plane. The drive component may have a tooth that may have a convex lateral side surface centered about a transverse tooth plane. The concave collar tooth side surface may cooperate with the convex lateral side surface to align the transverse collar tooth plane with the transverse tooth plane.

Methods and systems are provided for a motorized disconnect operable to selectively engage and disengage two rotating components of a vehicle drivetrain. As one example, a motorized disconnect system is provided that operates via an electric motor and includes a shifter assembly with an oscillating gear track and cam profile for rotating the shifter assembly while moving it in an axial direction to selectively couple two rotating components.

A disconnecting axle assembly with a planetary differential assembly and a coupling that selectively couples a planet carrier of the planetary differential assembly to an axle shaft.