An epicyclic gearing arrangement includes a planet gear rotatable on a planet bearing that is mounted via a support pin to a carrier of the epicyclic gearing arrangement. A spring film damper is disposed between the outer surface of the bearing's outer ring and the opposing inner surface of the planet gear and includes an annular gap. The support pin and/or outer ring include oil feed holes that open into the respective annular gap(s).

A steering mechanism having a piezoelectric element to adjust component clearance and preload based on steering inputs, road inputs, and time in service. The piezoelectric element positioned in the steering mechanism for electric adjustment so that the clearance and preload can be adjusted electrically in response to steering inputs, road inputs, and time in service. This arrangement allows for low preload and low friction when the vehicle is being driven over smooth road conditions. When a rough road condition is detected both clearance and preload can be electrically increased to minimize noise. The disclosed inventive concept may find application in a variety of steering mechanisms to minimize or eliminate NVH when the vehicle is driven over rough surfaces. Without limitation, the piezoelectric element may be provided in rack and pinion electric power assisted steering systems or in worm and wheel (steering column) electric power assisted steering systems.

A hybrid drive sub-assembly for a vehicle has primary gear wheels, secondary gear wheels that are able to be coupled to a secondary shaft, and an intermediate shaft to which intermediate gear wheels are secured for rotation therewith. The primary gear wheel(s) and the secondary gear wheels each meshing permanently with a corresponding gear wheel from among the intermediate gear wheels. This hybrid sub-assembly is equipped with a motorized module having a reversible electric machine, an interface for connecting to the intermediate shaft, a speed reducer, a torsional oscillation damping device and a coupling mechanism that is able to couple and uncouple the reversible electric machine and the intermediate shaft.

A geared motor includes a gear mechanism portion that meshes with a rotational shaft provided within a main motor unit. The gear mechanism portion has a multistage planetary gear reducing mechanism. The multistage planetary gear reducing mechanism includes a first stage gear formed helically and a final stage gear formed with spur teeth.

A roll stabilizer for a motor vehicle having a housing (137, 237) with a first stabilizer element (110, 210) coupled to the housing and an electric motor (150, 250) located in the housing (137, 237). The transmission (160, 260) is coupled to the electric motor (150, 250) on a drive side, and the output side of the transmission (160, 260) is coupled to a second stabilizer element (115, 215) such that the stabilizer elements are electromechanically rotatable with respect to one another. The electric motor is designed as a Vernier motor.

A transmission includes an input shaft coupled to a prime mover, a countershaft, main shaft, and an output shaft, with gears between the countershaft and the main shaft. A shift actuator selectively couples the input shaft to the main shaft by rotatably coupling gears between the countershaft and the main shaft. The shift actuator is mounted on an exterior wall of a housing including the countershaft and the main shaft. An integrated actuator housing includes a single external power access for the shift actuator. A controller interprets controls the shift actuator with actuating and opposing pulses, and interprets a shaft displacement angle, determines if the transmission is in an imminent zero or zero torque region, and performs a transmission operation in response to the transmission in the imminent zero or zero torque region.

A shift fork shaft 123 has both end portions movably fitted in shaft supports 83e and 116a of a gear transmission 82. Clearances are left between bottom surfaces 83g and 116c of the shaft supports 83e and 116a and both end faces 123c of the shift fork shaft 123. Caps 145 are mounted in both axial ends of the shift fork shaft 123.

The invention proposes a planet carrier (50) for a planetary gear train of a reducing mechanism of an electromechanical actuator for actuating a parking brake of a motor vehicle, which carries planet pinions (52), each of which is accommodated between two parallel support plates (56, 58) belonging to a reinforcement (54) of the planet carrier and each of which is mounted in rotation on the planet carrier (50) about a rotation guide pin (74) that is mounted between the two support plates (56, 58) to which it is linked by the two opposing axial ends thereof, characterized in that each rotation guide pin (74) is a tubular pin.

A method to control a road vehicle provided with a clutch, which connects an internal combustion engine to drive wheels and is arranged upstream of a servo-assisted transmission; the control method comprises the steps of: checking whether the tyres of the drive wheels are close to a grip limit; and opening the clutch so that the clutch transmits a torque to the drive wheels with a slip of the clutch that is constant and other than zero when the tyres of the drive wheels are close to the grip limit.

A power take off unit includes an input gear, an output gear, and an intermediary gear that cooperate to transfer power from a rotational power source to an operating target. The power take off unit has a control module that biases the intermediary gear relative to the input gear and the output gear to reduce gear rattle vibrations associated with intermeshed tooth looseness.