A pulley device for a tensioner roller or winding roller of a transmission element, providing a pulley, and a bearing. The bearing includes a rotating outer ring mounted to the pulley, a fixed inner ring, and at least one row of rolling elements arranged between the rings. The inner ring of the bearing has at least one end portion protruding axially with respect to the outer ring. The pulley is provided with at least one pulley element that is C-shaped in axial section. One of the at least one pulley elements is provided with a lateral portion extending substantially radially to pass into the immediate vicinity of an outer surface of the axially protruding end portion of the inner ring.

Methods and systems are provided for controlling and diagnosing one or more clutches in a transmission. In one example, a method for operation of a vehicle system is provided that includes at a diagnostic controller or processing unit independent from a driveline controller or processing unit, respectively, determining an engagement state of a clutch in a transmission of the vehicle system, wherein the engagement state is selected from a group of three or more clutch engagement states. The method further includes identifying an unauthorized clutch state based on the engagement state of the clutch and a speed of the vehicle and responsive to the identification of the unauthorized clutch state, operating the vehicle system in a fault state.

The invention relates to mechanisms for converting rotational motion into other types of motion, in particular uniform translational motion, and is intended for use as an oscillation compensator for stepping wheel propulsion units. An oscillation compensating device for a stepping wheel propulsion unit consisting of a plurality of supports fastened symmetrically to an output shaft that is fastened for transverse motion is actuated by an input shaft, the output shaft being fastened on the free end of a crank. The output shaft is set into rotation via a variator, which varies the angular velocity of the output shaft according to the current position of the crank and the angular velocity thereof. The invention obviates the need for cam mechanisms and springs in the device, reduces the coefficient of friction and the dimensions of the device and significantly reduces both spatial and speed oscillations.

Object: To provide a planetary gear mechanism with a free-wheel mechanism that can prevent seizing of a thrust plate and can increase the degree of freedom in setting of a gear ratio. Means to Solve the Problem: A planetary gear mechanism 100 is a planetary gear mechanism with a free-wheel mechanism for reducing the output of a hydraulic motor 104 and transmitting the reduced output. The planetary gear mechanism 100 includes: a housing 108 configured to be decelerated and rotated; a cover 128 that seals an end surface 126 of the housing; a sun shaft 132 configured to be splined to a motor shaft 106 of the hydraulic motor; a first sun gear 142 formed in one piece with the sun shaft; a first planetary gear 144 meshed with the first sun gear; a carrier 146 that supports a shaft 148 of the first planetary gear; a thrust plate 160 that is disposed toward the cover relative to the first planetary gear, and is configured to restrict a movement of the carrier; a hole 164 that is formed in the thrust plate and through which the first sun gear can be passed; a maintenance hole 166 that is formed in the cover and through which the first sun gear can be passed; and a plug 162 configured to close the maintenance hole.

A pulley device for a tensioner roller or winding roller of a transmission element, having a fixed inner element, a rotating outer element that is mounted to rotate coaxially about the fixed inner element, and an annular protective flange having a substantially radial portion bearing against a front surface of the fixed inner element. The flange includes an annular folded portion extending substantially axially from an outer edge of the flange and passing radially into the immediate vicinity of an axially protruding annular portion of the rotating outer element to form a narrow passage.

The disclosure relates to the field of electric drive transmission systems for vehicles, and in particular provides a disconnecting differential and an electric drive transmission system having the disconnecting differential. The disconnecting differential comprises a first one-way clutch, a second one-way clutch and an interruption device, wherein the first one-way clutch and the second one-way clutch have opposite locking directions and are coaxially sleeved between a planet carrier and a differential housing; and the interruption device comprises a power section and an interruption section, wherein the power section is located on an inner wall of a reduction gearbox, the interruption section is located on the differential housing and can shift, under the action of the power section, all rolling elements of the one-way clutch locked in a forward rotation coasting condition, thereby realizing selective releasing of the locking function of the one-way clutch. In this way, power transmission in a reverse power transmission state such as coasting of a vehicle is selectively interrupted while achieving the speed differential and forward and reverse power transmission functions of a normal differential. The structure is novel and the operation accuracy is high, and the NVH problem during engagement can also be avoided.

A transmission includes a shaft-hub connection designed as a serration and having an axial extent along a shaft axis, and an oil supply line to the serration in order to lubricate a relative movement in the serration between a shaft side and a hub side of the shaft-hub connection. The oil supply line is designed to open from radially inward directly into a cavity on the serration to enable supply of oil to the serration at an oil pressure that prevails in the cavity.

The invention relates to a pivot pin (5) for an epicyclic gear train sliding bearing, having axially opposed, laterally open circumferential grooves (25a) providing flexibility to the pivot pin, each groove having a radial width and at least one depth (P). At least one of the circumferential grooves (25a,25b) has a said width and/or depth (P) which varies circumferentially.

Separate structural units for an inner gear and a housing of a planetary gear device include an inner gear with a first raised portion formed on the outer peripheral surface of the inner gear, where the first raised portion extends towards in a direction that is inclined with respect to the axial direction of the inner gear. A housing includes a second raised portion formed on an inner peripheral surface, where the second raised portion extends in a direction that is inclined in respect to the axial direction. The housing contains the inner gear such that there is a gap formed between the inner peripheral surface of the housing and the outer peripheral surface of the inner gear. Movement of the inner gear within the interior of the housing is limited through linear contact of the first raised portion and the second raised portion.

A transmission includes a main shaft having two or more main shaft clutches that couple gears to at least one countershaft, and an automated manual transmission coupled to the main shaft via the at least one countershaft. The automated manual transmission includes a front input shaft coupled directly to a main clutch and having a first clutch coupleable to the at least one countershaft, and a rear input shaft coupled to the front input shaft and having a second clutch coupleable to the at least one countershaft. The automated manual transmission is operable to selectively engage the first clutch and the second clutch.