Abstract: A friction clutch includes an axis of rotation, a disk spring, a plurality of leaf springs, a clutch cover and a pressure plate. The disk spring is for engaging the friction clutch. The disk spring includes tongues. The plurality of leaf springs is axially fixed to the tongues. The pressure plate is axially displaceable relative to the clutch cover and attached to the clutch cover in a torsion-resistant manner by the plurality of leaf springs.

Abstract: A differential assembly includes a differential, a collar, and a coupling. The differential has a differential input and differential gearing. The differential input is rotatable about a differential axis. The differential gearing has first and second differential output gears that are rotatable relative to the differential input about the differential axis. The differential gearing transmits rotary power between the differential input and the first and second differential output gears. The collar is rotatable about the differential axis. The coupling has first and second coupling members. The first coupling member is fixedly coupled to the first side gear. The second coupling member is fixedly coupled to the collar. The coupling is operable in a disengaged mode, in which the collar is rotationally decoupled from the first differential output gear, and an engaged mode in which the collar is rotatably coupled to the first differential output gear.

Abstract: A powertrain and an electro-mechanical drive unit includes a first electric machine and a second electric machine each operable as a motor to produce motor torque or as a generator to produce energy. The first and second electric machines are in electrical communication with each other. The electro-mechanical drive unit further includes a hydrodynamic coupling apparatus configured to transfer engine torque. The hydrodynamic coupling apparatus includes an impeller and a turbine fluidly connected to the impeller. The hydrodynamic coupling apparatus is coupled to one of the first and second electric machines to combine the engine torque transferred via the hydrodynamic coupling apparatus with the motor torque produced by the first and/or second electric machines when the first and/or second electric machines operate as the motor.

Abstract: A reverse input lock clutch has a fitting portion of a spring stopper rotatably fitted in a cylindrical dent formed by being surrounded by an inner diameter portion on an end surface of an output member on a side opposite to a fixed member. A locking portion rotates with the fitting portion while having one end of a first elastic member locked by a holder groove. Adjustment of the rotation position of the lock portion with respect to the output member is made by rotating the fitting portion within a range of a groove length of an adjustment groove with respect to the output member and anchoring an adjustment pin at a desired rotation position to the adjustment pin fixing portion so as to fix the fitting portion on the output member.

Abstract: A complex synchronizer may include a first connection gear and a second connection gear that are fixed to a shaft; a first external gear having a first sleeve, which can engage with the first connection gear by sliding along the shaft, and rotatably mounted on the shaft; a second external gear having a second sleeve, which can engage with the second connection gear by sliding along the shaft, and rotatably mounted on the shaft; and an intermediate gear being able to connect or disconnect the first sleeve and the second sleeve, depending on axial sliding states of the first sleeve and the second sleeve.

Abstract: Methods and systems are provided for a differential lock assembly for a motorized vehicle. In one example, the differential lock assembly includes a cam gear driven by an electric motor via a transmission of the assembly. The cam gear presses a biasing member against a clutch ring in order to couple a first axle half shaft of the vehicle to a carrier of a differential, and to rotate the first axle half shaft at a same speed as a second axle half shaft driven by the differential.

Abstract: A parking lock device includes a parking gear, a parking pawl, a parking cam, a solenoid actuator, and a power conversion mechanism. The power conversion mechanism is configured to convert reciprocal motion of the plunger to rotary motion of the parking cam in one direction. When the parking cam rotates, a position of a cam surface of the parking cam that abuts the parking pawl is changed, so as to alternately switch between a locked position where rotation of the parking gear is stopped and an unlocked position where meshing between the parking gear and the parking pawl is canceled. A stroke amount of the plunger is reduced in a range where the parking cam can rotate. In this way, the parking lock device can be downsized. Therefore, mountability of the parking lock device on a vehicle is improved.

Abstract: A dual-acting selectable one-way coupling (SOWC) device configured to include a clutch module and an electromagnetic actuator module. The clutch module includes an outer race and an inner race assembly rotatable relative to the outer race. The inner race assembly including a rotatably driven first inner race member, a second inner race member, and compliant connector members drivingly interconnecting the first and second race members. The electromagnetic actuator module includes an electromagnetic actuator operable to releasably engage the second inner race member. An auxiliary locking assembly is operable to independently releasably engage the second inner race member.

Abstract: A method for controlling a separating clutch in a power train of a vehicle having a drive motor and a retarder. The clutch is arranged such that a rotor of the retarder is switched into a drive connection with the motor and/or power train via the clutch and a working chamber of the retarder can be filled with an operating medium to build up a braking power such that braking torque is exerted by the retarder onto the power train and/or motor. A control system switches the clutch into a closed or an open position. The switching of the clutch into the closed position occurs depending on an input signal to the controller, and the clutch is switched back into the open position depending on essentially no medium being present in the working chamber of the retarder and that predetermined limits of an operating and/or environmental parameter are not exceeded.

Abstract: A torque convertor stator includes an annular bearing support, a plurality of stator blades, and a web extending radially between the annular bearing support and the plurality of stator blades. The annular bearing support, the plurality of stator blades, and the web are formed from a single continuous piece of amorphous metal.

Abstract: A planetary gearbox comprises a driving shaft, a plurality of planetary gear train units (PGTUs), a carrier arm disc, a driven shaft and at least one brake assembly. Each of the PGTU further comprises a sun gear, at least one planet gear that is meshed to the sun gear and mounted on a planet axle, a ring gear that is meshed to the planet gear and at least one circular planet carrier arm (CPCA) that is coupled to the planet axle. The driving shaft of the planetary gearbox is coupled to the sun gear of the PGTU thereby causing the sun gear to rotate along with it. Further, the CPCA of the PGTU is coupled to the carrier arm disc and the carrier arm disc is further coupled to the driven shaft.

Abstract: A control device for a lock-up clutch includes a control unit, an abnormality determination unit, a release control unit and a prohibition unit. The control unit is configured to control an engagement state of a lock-up clutch, and to perform a slip lock-up control by performing a feedback control of an engagement hydraulic pressure to be a first slip amount during coasting. The abnormality determination unit is configured to determine an abnormality when a state continues with a slip amount being equal to or greater than a second slip amount. The release control unit is configured to release the lock-up clutch when the abnormality is determined. The prohibition unit is configured to allow the control unit to raise the engagement hydraulic pressure by a prescribed pressure, and to prohibit determination by the abnormality determination unit, when the transmission ratio is downshifted during coasting while the slip lock-up control is performed.

Abstract: A hydraulic valve unit includes a main oil passage configured to bring a side of a master cylinder and a side of a slave cylinder to communicate with each other, and a bypass oil passage configured to bypass a valve mechanism of the main oil passage, wherein the main oil passage and a main section of the bypass oil passage are disposed to be arranged with respective axes aligned with each other, and the main section of the bypass oil passage is disposed at the same height as the main oil passage or at a position higher than that of the main oil passage in a state in which a valve body is attached at a predetermined attachment position.

Abstract: A lubrication system for a power transmission unit that supplies oil to a starting clutch in an appropriate amount irrespective of an engagement state of the starting clutch. When the friction clutch is completely engaged or disengaged, a first control valve is brought into a low inflow rate mode, and the second control valve is brought into a low outflow rate mode. When the friction clutch is engaged while causing a slip the first control valve is brought into a high inflow rate mode, and the second control valve is brought a high outflow rate mode.

Abstract: A parking lock arrangement for a drive train of a motor vehicle includes a controllable locking mechanism and an unlocking mechanism. The controllable locking mechanism includes a spindle drive with a spindle shaft rotationally drivable about a spindle axis, an actuator for rotating the spindle shaft and a positioning element movable by rotating the spindle shaft for actuating a blocking element. The blocking element acts at least indirectly on a drive element in a blocking or releasing manner. The unlocking mechanism includes an unlocking element and a manually operable control element. The unlocking element is movable via the control element from a normal position, in which the unlocking element is spaced apart from the spindle shaft, into an engagement position, in which the unlocking element is coupled in torque-transmitting manner to the spindle shaft for forced releasing of the locking mechanism.

Abstract: A gearbox for a planetary gear having a hollow-cylindrical housing body having a first internal gear, and a bearing flange engaging at least in sections coaxially in the housing body, so that an overlap area is formed, wherein the housing body and the bearing flange are firmly bonded to each other in the overlap area by laser irradiation welding. The bearing flange has a second internal gear in the overlap area. The gearbox relates to a planetary gear and a motor/transmission combination having such a gearbox and a production method thereof.

Abstract: A switchable clutch, including: a housing defining a pocket; a race arranged to receive torque; a pawl disposed in the pocket; a spring ring rotatable by an actuator to circumferential position with respect to the pawl; a ramp ring; and resilient element fixed to the spring ring and in contact with the pawl. In a free-wheel mode: the race is rotatable, with respect to the housing, in a first circumferential direction and in a second circumferential direction; and the resilient element urges the pawl radially outwardly out of contact with the race. In a one-way mode: the spring ring is in the circumferential position; the resilient element urges the pawl into contact with the race; and the pawl blocks rotation of the race, with respect to the housing, only in the first circumferential direction. In a locked mode, the ramp ring, the pawl, and the race are non-rotatably connected.

Abstract: Sealed piston apparatus and related systems for use with vehicle torque converters are disclosed. A disclosed vehicle torque converter includes a housing and a clutch including a piston in the housing. The piston has a first side partially defining a first chamber and a second side, opposite the first side, partially defining a second chamber. The vehicle torque converter also includes a first seal operatively coupled to the piston and a second seal operatively coupled to the piston. The vehicle torque converter also includes an orifice positioned on the piston radially inward relative to a clutch pack of the clutch. The orifice is configured to provide a flow of a fluid between the first and second chambers during a lockup on operation of the vehicle torque converter to lubricate the clutch. The first seal is a one-way seal.

Abstract: A drive system for an engine arrangement, the drive system comprising an epicyclical gear reduction mechanism having a main axis and comprising: a first main gear, a second main gear arranged to rotate about main axis in the same direction as the first main gear, a first set of planet gears with planet gears meshing with the first main gear, a second set of planet gears with planet gears meshing with the second main gear, a planet carrier, supporting planet gears of the first and second planet gears, the planet carrier being located, along the main axis, between the first main gear and the second main gear.

Abstract: The present device includes a mass body, a centrifugal element and a plurality of conversion mechanisms. The mass body is disposed to be rotatable with the rotor and be rotatable relative to the rotor. The centrifugal element is disposed to receive a centrifugal force to be generated by rotation of at least one of the rotor and the mass body. Each of the plurality of conversion mechanisms is configured to convert the centrifugal force into a circumferential force when a relative displacement is produced between the rotor and the mass body in a rotational direction. The circumferential force is directed to reduce the relative displacement. The respective plurality of conversion mechanisms are disposed at intervals in a circumferential direction.