Abstract: In one example, a hybrid drive unit comprises an electric motor, an axle differential for connection with a further motor, a first axle half shaft and a second axle half shaft connected to the axle differential, a first clutching device and a second clutching device. The electric motor is selectively drivingly engagable with the first axle half shaft via the first clutching device and with the second axle half shaft via the second clutching device.

Abstract: Methods and systems are provided for a vehicle park lock. In one example, the park lock may be configured with a first portion having a first set of teeth and a second portion having a second set of teeth configured to engage with the first set of teeth. The first portion may be coupled to a rotating part of the vehicle while the second portion may be coupled to a stationary part of the vehicle. The second portion may include actuating devices to actuate the sliding of the second set of teeth, the actuating devices including a motion source, elastic elements, and one or more ramps.

Abstract: Electromagnetically-operated coupling device for selectively connecting and disconnecting a first rotating member and a second rotating member in a driveline of a vehicle is disclosed, wherein the first and the second rotating members are coaxial with each other and rotatable about a same axis of rotation. The coupling device comprises: an engagement sleeve provided with a control disk made of a ferromagnetic material, the engagement sleeve being axially slidable between an engaged position and a disengaged position; and a control system for controlling the sliding movement of the engagement sleeve between said engaged and disengaged positions. The control system comprises a pair of magnetic coils which are placed on opposite sides of the control disk, coaxially therewith, and are arranged to be selectively activated by an electric current to generate a magnetic force acting on the control disk to axially move the control disk, and therefore also the engagement sleeve, in either directions.

Abstract: A synchronizer for mechanical transmissions having a phasing system configured so as to include a plurality of first cavities on an internal cylindrical surface of a rim of a hub, the hub torsionally connected with a transmission shaft, forming the external teeth of the hub and, for each of the first cavities, either a tooth which radially protrudes from an external cylindrical surface of a synchronizing ring of the synchronizer and is arranged to engage in the first cavity, or a connecting pin arranged to engage on one side the first cavity and on the other a respective second cavity on the external cylindrical surface, wherein the first cavities have an arc- or round-shaped cross-section.

Abstract: The synchronizer may have a hub provided with external teeth. An actuating sleeve may be provided with internal teeth meshing with the external teeth of the hub. At least one synchronizing ring may be provided with external teeth arranged to mesh with the internal teeth of the actuating sleeve and has, on its radially internal side, a friction surface arranged to cooperate with a friction surface associated to a respective gear wheel to allow generation of a friction torque between the synchronizing ring and the associated gear wheel. A pre-synchronization system may have more than two blocking elements operatively placed between the hub and the actuating sleeve. A phasing system may be provided to ensure a given angular positioning of the synchronizing ring with respect to the hub about the longitudinal axis.

Abstract: A synchronizer may have a hub, an engagement sleeve, a pair of engagement ring gears, a pair of synchronizing rings and a pre-synchronizing system interposed between the hub and the engagement sleeve. The pre-synchronizing system may have a single elastic ring which is axially interposed between the synchronizing rings, is drivingly connected with the engagement sleeve in the axial sliding movement relative to the hub and is at least partially received in an internal annular groove of the engagement sleeve.

Abstract: A park-lock device having a gearwheel connected to a rotating member; a tilting lever with a locking tooth engagable with the gearwheel to prevent rotation thereof, the tilting lever is tiltable about a first axis of rotation between a disengagement and engagement position; and a spring that applies torque on the cam. The cam is mounted about a second axis of rotation parallel to the first axis of rotation and has a first lateral surface portion that cooperates with a first cam follower of the tilting lever. The tilting lever has a second cam follower and the cam has a second lateral surface portion that cooperates with the second cam follower. In a first rotational direction the cam causes the tilting lever to tilt from the disengagement to the engagement position. In a second direction the cam causes the tilting lever to tilt from the engagement to the disengagement position.

Abstract: An actuation unit has a primary motor and a transmission mechanism for transmitting motion generated by the primary motor to a control member. The transmission mechanism includes a first transmission member connected to a drive shaft of the primary motor, a second transmission member drivingly connected to the control member, and a coupling member shiftable between an engagement position and a disengagement position. The transmission mechanism further includes a first elastic member interposed between the first transmission member and the second transmission member to cause rotation of the second transmission member relative to the first transmission member when the coupling member is in the disengagement position, a second elastic member for elastically urging the coupling member towards the engagement position, and an auxiliary actuation device for shifting the coupling member from the engagement position to the disengagement position.