Abstract: A clutch mechanism is configured to be driven in rotation about an axis and includes two assemblies. Each assembly includes: an outer disk carrier externally delimiting a cavity; a clutch including a stack of coupling disks and friction disks, the stack being housed in the cavity and configured to be driven in rotation about the axis; and a reaction member of the outer disk carrier configured to enable compression of the coupling disks against the friction disks in a clutch engaged position of the corresponding clutch. The clutch mechanism includes at least one device for assembling the two assemblies to one another.

Abstract: A clutch hub which is engaged with the clutch plates in an outer circumference is a press-molding article made from one steel sheet. In its inner circumferential surface, plural oil grooves for cooling the clutch plates, which are extended to a shaft direction and have a space in a circumferential direction. Each of dams as a press-molding portion extending to radial inward is formed at an end portion of each of the oil groove. The dams include an upright front surface and a back surface, and the bottom surfaces and both side surfaces of the oil grooves are integrated with the dams at the front surface side and the back surface side.

Abstract: A wet clutch assembly may have a clutch drum, a clutch chamber formed within the clutch drum, a clutch actuation piston movably disposed within the clutch drum and configured to be actuated via a hydraulic pressure in the clutch chamber. A fluid line may at least partially extend through the clutch actuation piston, where the fluid line provides fluid communication with the clutch chamber for filling the clutch chamber via the fluid line.

Abstract: A drive module having a housing, an input pinion, a ring gear driven by the input pinion, a ring gear bearing supporting the ring gear for rotation relative to the housing, a pair of output shafts and a clutch that selectively transmits rotary power between the ring gear and the output shafts. The clutch includes a clutch input, which is rotatably coupled to the ring gear, a clutch pack separator that is rotatably coupled to the clutch input, a pair of clutch outputs, which are each coupled to a respective one of the output shafts, a pair of clutch packs, which transmit rotary power between the clutch input and a respective one of the clutch outputs, and a pair of apply pistons. The apply pistons are housed in the clutch pack separator.

Abstract: An automatic transmission that includes a lubricating oil supply source that supplies lubricating oil; a plurality of friction engagement elements that can attain a plurality of shift speeds according to combinations of the friction engagement elements to be engaged simultaneously; a plurality of hydraulic servos that engage and disengage the plurality of friction engagement elements according to whether an oil pressure is supplied thereto or not; and a rotary shaft that can transmit power.

Abstract: A clutch device comprising a first and a second input side, a first and a second output side, wherein the first and second input sides and the first and second output sides are configured to rotate about a common rotation axis. The clutch device also includes a first clutch between the first input side and the first output side, a second clutch between the first input side and the second output side, wherein the first and second clutch are offset axially relative to one another, and a third clutch between the first input side and the second input side.

Abstract: A vehicle transmission includes a transmission shaft, a friction element assembly mounted on the transmission shaft, a piston assembly for actuating the friction element assembly, a snap ring for retaining the friction element assembly and a mounting groove formed in the transmission shaft. The snap ring is installed into the mounting groove by expanding the snap ring and then allowing the snap to contract and enter the mounting groove. The mounting groove is located such that the snap ring could exit the mounting groove upon expansion of the snap ring due to a centrifugal force. Accordingly, various arrangements are provided to prevent the snap ring from leaving the mounting groove after installation.

Abstract: A clutch arrangement includes a shift piston and a piston housing. The shift piston is arranged to be displaced in an axial direction relative to the piston housing between at least one gear position and a neutral position. The clutch arrangement also includes a spring element for forcing the shift piston towards the neutral position. The clutch arrangement includes a first return piston and a second return piston arranged on opposite sides of the spring element, and the spring element is accommodated within a recess of the shift piston and is pretensioned between the first return piston and the second return piston.

Abstract: A fluid transmission device includes a pre-damper (10) that transmits driving force received from a crankshaft (100) to a front cover (20) via first damper springs (14), a mechanism (30) that transmits the driving force transmitted to a pump (31) to a turbine (32) via hydraulic fluid, a piston member (40) that is disposed between the front cover (20) and the mechanism (30) and delivers the driving force to an output shaft (200), a dynamic damper (60) that connects the piston member (40) and the turbine (32) via second damper springs (63), a lock-up clutch (50) that enables the front cover (20) and the piston member (40) to engage with each other, a turbine clutch (70) that enables the turbine (32) and the piston member (40) to engage with each other, and a control device (80) that controls the lock-up clutch (50) and the turbine clutch (70).

Abstract: A power transmitting apparatus can comprise a plurality of gear stage clutches arranged on the way of a power transmitting path between an engine and the wheels. Each of the gear stage clutches include alternately arranged driving clutch discs and driven clutch discs, hydraulic pistons actuated by hydraulic oil to selectively engage or disengage the driving clutch discs and driven clutch discs, hydraulic chambers for actuating the hydraulic pistons, and supplying ports communicating with oil passages formed within the input shaft and opening on the side surface of the input shaft for supplying the hydraulic chambers with hydraulic oil from the oil passages to actuate the hydraulic pistons. A plurality of the supplying ports can be formed on a same plane of a radial cross-section of the input shaft.

Abstract: A two way actuator in a torque transmitting assembly includes a piston member having a first side with a first contact surface and a second side opposite with a second contact surface. A backing member is sealed to the piston member. A first biasing member is disposed between the backing member and the piston member and a second biasing member is disposed between the piston member and a second member. The first torque transmitting device is engaged when a hydraulic fluid contacts the second side of the piston member and moves the piston member to contact the first torque transmitting device. The second torque transmitting device is engaged when the hydraulic fluid contacts the first side of the piston member and moves the piston member to contact the second torque transmitting device.