Abstract: A compressor includes a housing, a drive shaft rotatably engaged in the housing, a stator attached to the housing, a pulley rotatably attached to the housing and rotatable relative to the housing, a front plate attached to the drive shaft and rotated in concert with the drive shaft, and a lock device includes a lock member attached to the drive shaft and rotated in concert with the drive shaft, and the lock member is secured to the front plate for anchoring and securing the front plate and the lock member and the drive shaft together. The drive shaft includes a non-circular section, and the lock member includes a non-circular bore engaged with the drive shaft for preventing the lock member from being rotated relative to the drive shaft.

Abstract: A planetary gearbox device for a turbomachine, having a planet carrier and at least one planet gear arranged rotatably thereon, is described. The planet gear is arranged in the axial direction between two planet carrier regions, to each of which at least one carrier element, on which the planet gear is rotatably mounted, is connected for conjoint rotation therewith. A wedging sleeve is arranged between the carrier element and each of the planet carrier regions, by means of each of which wedging sleeves a press-fit joint is established between the carrier element and the planet carrier regions. A sleeve is provided radially between at least one of the wedging sleeves and a planet carrier region.

Abstract: A centrifugal brake mechanism for a controlled descent device, and a drum device employing it. The brake mechanism comprises a circular wheel configured and operable to rotate about an axis of rotation, an axle extending along and rotatable about the axis inside a central cavity of the wheel and having two or more parallel shaft rods extending inside the cavity substantially perpendicular to the axis of rotation, a gear system for transferring rotations of the wheel into counter-rotations of the axle, one or more brake elements each having two or more pass-through bores for slidably mounting over the two or more parallel shaft rods, two or more springs mounted over the parallel shaft rods between the brake element and the axle, and a friction enhancement mechanism for increasing friction forces between the brake elements and the inner wall the wheel responsive to increase in angular velocity of the wheel.

Abstract: Friction clutch assemblies with low-drag clutch packs having cone-clutch synchronizers and dog-clutch bypass devices are presented. A friction clutch assembly includes a housing that drivingly couples to an output (or input) member, and a disc hub rotatably mounted inside the housing that drivingly couples to the input (or output) member. A disc carrier is rotatably and slidably mounted inside the housing coaxial with the disc hub. A clutch pack includes reaction plates secured to the housing (or disc carrier) for common rotation therewith, and friction plates interleaved with the reaction plates and secured to the disc carrier (or housing) for common rotation therewith. A cone clutch is interposed between the clutch pack and disc hub such that frictional engagement of the cone clutch with the disc hub allows for compression of the pack to carry torque from the input member, through the disc hub and housing, to the output member.

Abstract: Gearboxes for aircraft gas turbine engines, in particular to arrangements for journal bearings such gearboxes, and to related methods of operating such gearboxes and gas turbine engines. Example embodiments include a gearbox for an aircraft gas turbine engine, the gearbox including: a sun gear; a plurality of planet gears surrounding and engaged with the sun gear; and a ring gear surrounding and engaged with the plurality of planet gears, each of the plurality of planet gears being rotatably mounted around a pin of a planet gear carrier with a journal bearing having an internal sliding surface on the planet gear and an external sliding surface on the pin.

Abstract: An axle assembly with a carrier housing, an input pinion and a ring gear. The input pinion includes pinion gear teeth and is supported for rotation about a first axis relative to the carrier housing via first and second bearings that are disposed along the first axis on opposite sides of the pinion gear teeth. The ring gear includes ring gear teeth that are meshed to the pinion gear teeth and a third bearing supports the ring gear for rotation about the second axis relative to the carrier housing. The third bearing is disposed along the second axis on a side of the ring gear that is opposite the first axis.

Abstract: A hybrid module includes a rotor carrier, a rotor, first and second pluralities of clutch plates, an input, a spring element, and first and second torsion dampers. The rotor carrier has a first outer circumferential surface and an inner circumferential surface with a first spline. The rotor is fixed to the first outer circumferential surface. The first plurality of clutch plates is drivingly connected to the first spline. The input has a second outer circumferential surface with a second spline. The second plurality of clutch plates is drivingly connected to the second spline. The spring element is for compressing the clutch plates to transmit a clutch torque. The first torsion damper is arranged in a first torque path between the input and an engine. The second torsion damper is arranged in a second torque path between the rotor carrier and a multi-speed transmission.

Abstract: A vehicle includes a connecting shaft, a drive axle, a multi-mode transmission, and a controller. The multi-mode transmission includes a first gear set having a first planetary gear carrier and a second gear set having a second planetary gear carrier, a first motor/generator coupled to the first gear set, a second motor/generator electrically coupled to the first motor/generator and coupled to the second gear set, a brake selectively limiting movement of a portion of the second gear set, and a clutch selectively rotationally coupling the second motor/generator to the connecting shaft. The first gear set is coupled to the connecting shaft, and the planetary gear carriers are rotatably coupled. The controller is configured to selectively configure the multi-mode transmission into an active neutral startup mode of operation by engaging the clutch and the brake such that at least one of the first motor/generator and the second motor/generator produces a voltage.

Abstract: A power-split transmission comprises an electric variator (9) and an electric variator (10) which can be connected, by way of a clutch (8), for forward driving, and a clutch (7), for reverse driving, to the drive output shaft (5) in such manner that the drive output shaft (5) can be purely electrically driven even when the input shaft (2) is static.

Abstract: A vehicle control apparatus is applied to a vehicle including an engine as traveling drive source and a clutch device in a power transmission path connected to an output shaft of the engine. The vehicle control apparatus causes the vehicle to be in a coasting state by reducing power transmitted in the path by clutch device operation upon satisfaction of a predetermined implementation condition, and cancels coasting state by clutch device operation upon satisfaction of a predetermined coasting cancellation condition including at least an accelerator condition during coasting. The vehicle control apparatus includes a travel determination section determining coasting state of the vehicle, and a clutch control section performing half-clutch control during coasting at least at one of at the beginning of coasting and immediately before coasting is cancelled, the half-clutch control setting a degree of clutch device engagement to an intermediate degree.

Abstract: Dual-mass flywheel concept for internal combustion engines, where the secondary flywheel can be disconnected and reconnected as required, by means of a clutch. The concept is characterized in that it comprises a primary flywheel fixedly mounted on the engine crankshaft, a secondary flywheel which is stored so that it can rotate freely, a clutch connecting the secondary flywheel to the drive shaft (input shaft on the gearbox), an elastic element (springs) which connects the primary flywheel to the drive shaft.

Abstract: A cone clutch for a vehicle including a hub, a sleeve, and a clutch ring including a clutch cone, may further include a first friction ring for forming frictional force with the clutch cone, an internal middle cone, a second friction ring, an external middle cone, and a third friction ring, which are sequentially mounted to be brought into contact with each other. When the third friction ring is pressed by the sleeve and the third friction ring, the external middle cone, the second friction ring, the internal middle cone, the first friction ring, and the clutch cone are sequentially brought into close contact with each other, the distances from the hub in an axial direction gradually increase in the order of the first friction ring, the internal middle cone, the second friction ring, the external middle cone, and the third friction ring.

Abstract: A vehicle differential device comprises: a differential casing rotatably disposed around a rotational axis; and a pair of side gears rotatably supported by the differential casing and supported in a thrust direction via an annular bearing surface formed in the differential casing to mesh with a pair of pinion gears. The differential casing is provided with a first lubricating oil passage formed in a circumferential direction on an outer circumferential side of the bearing surface in the differential casing, and a first guidance projection projected toward the rotational axis in the first lubricating oil passage and guiding a lubricating oil flowing in a circumferential direction in the first lubricating oil passage due to rotation of the differential casing around the rotational axis, toward a first meshing portion between a first side gear of the pair of side gears and the pinion gears.

Abstract: A two-speed transmission for an electric vehicle includes a planetary gear set selectively coupling an input shaft and an output shaft. The planetary gear set is configured to provide two forward gear ratios and neutral. The planetary gear set includes at least one sun gear, at least one pinion in meshing engagement with the at least one sun gear, at least one ring gear meshingly engaged with the at least one pinion, and a carrier. The carrier supports the at least one pinion and is connected to the output shaft such that rotation of the carrier drives the output shaft. The two-speed transmission also includes one or more elements that rotatably couple the at least sun gear, the at least one pinion, the at least one ring gear, the input shaft, and the carrier with one another and/or a ground. Examples of such elements include clutches, brakes, and mechanical diodes.

Abstract: A vehicle drive unit assembly having a housing having a hollow interior portion therein with a size and shape to receive and/or retain at least a portion of a gear assembly. At least a portion of a shroud having an inner surface, an outer surface, a first side, a second side, a first end portion, a second end portion and an intermediate portion is disposed within the hollow interior portion of the housing. One or more first shroud channels having extend inward into a body portion of the shroud from at least a portion of the second side of the shroud. At least a portion of one or more inlet openings of the shroud are disposed in the second side of the shroud and at least a portion of the one or more outlet openings of the shroud are disposed within the inner surface of the shroud.

Abstract: Clutch arrangement provided with a housing and a clutch device, one of which serves as a clutch element carrier for a clutch element and the other serves as a friction region carrier. The clutch element has a carrier for a friction lining and a holding apparatus for receiving the carrier on the clutch element carrier, radially adjacently with respect to the friction lining. In a first radial region, the clutch housing has an axial projection at a first axial spacing from the clutch device and, with a radial offset with respect thereto, has an axial recess at a second axial spacing from the clutch device in a second radial region, and has a transition region radially between the axial projection and the axial recess, either the axial projection or the axial recess being intended to provide a bearing face for at least one component of the clutch device.

Abstract: A combination starter-generator device is provided for a work vehicle having an engine. The starter-generator device includes an electric machine and a gear set configured to receive rotational input from the electric machine and engine. The gear set is configured to operate in one of at least a first, second, or third gear ratio in a first power flow direction and at least a fourth gear ratio in a second power flow direction. The starter-generator device further includes at least one clutch selectively coupled to the gear set to effect the gear ratios and an actuation assembly including at least one electromechanical solenoid device configured to selectively shift the at least one clutch from a disengaged position in which the at least one clutch is decoupled from the gear set into an engaged position in which the at least one clutch is coupled to the gear set.

Abstract: A viscous clutch includes a shaft, a rotor disk, a housing having a base, a working chamber, a reservoir fluidically connected to the working chamber, a valve, an electromagnetic coil, and a flux guide that passes through the housing. The rotor disk includes a conductive portion made of a magnetic flux conductive material that forms a hub of the rotor disk that contacts the shaft and another portion. The base includes a hub with an axially-extending ring, and an armature of the valve is located radially outward of the axially-extending ring. The electromagnetic coil is located at an opposite side of the rotor disk from the reservoir. A magnetic flux circuit extends from the electromagnetic coil to the flux guide, then to the armature of the valve, then to the conductive portion of the rotor disk, then to the shaft, and then back to the electromagnetic coil.

Abstract: A vehicle control system configured to promptly shift a gear stage of a transmission during startup of an engine while reducing shocks. An engine is started by a first motor when shifting from an electric vehicle mode to a parallel hybrid vehicle mode. A controller is configured to establish a target stage via an interim stage if a shifting operation of a transmission to directly establish the target stage is expected to take longer time than a shifting operation of the transmission to establish the target stage via other stage.

Abstract: An engine for an aircraft includes an engine core including a turbine, a compressor, and a core shaft connecting the turbine to the compressor; a fan located upstream of the engine core, the fan comprising a plurality of fan blades; and a gearbox. The gearbox receives an input from a gearbox input shaft portion of the core shaft and outputs drive to the fan so as to drive the fan at a lower rotational speed than the core shaft. The gearbox is an epicyclic gearbox including a sun gear, a plurality of planet gears, a ring gear, and a planet carrier on which the planet gears are mounted. The carrier and the gearbox input shaft each have a torsional stiffness, and a carrier to gearbox input shaft torsional stiffness ratio is greater than or equal to 70.