Components for an automatic motor vehicle transmission including a band brake drum, a clutch housing or hub having a seal surface or a clutch housing or hub utilized in a friction clutch assembly having a spline set. All of these components are fabricated of aluminum and the outer surface of the band brake drum, the housing or hub sealing surface and the area of the spline set includes a thin coating of a thermally sprayed steel material. The thermally sprayed steel material may be a low carbon steel such as SAE 1008 or 1010, a similar alloy, iron or other metal. The resulting components thus exhibit the weight saving of aluminum while providing excellent service life due to the enhanced strength and wear resistance provided by the thermally sprayed steel coating.

A drive device comprising, a housing configured to delimit a housing inner chamber that can be filled with a cooling fluid and a clutch device that includes a first input side coupled to a first drive motor, a second input side, wherein the first and second input side can be rotated about a common rotation axis. The clutch device further includes a first output side, a second output side, a first clutch arranged between the first input side and the first output side, and a second clutch arranged between the second input side and the second output side.

A hydraulic clutch device includes a pressure regulating valve located on a downstream side in an oil flowing direction, a casing housing the hydraulic clutch, an insertion hole holding at least a part of the pressure regulating valve, an upstream side oil passage having an opening part introducing the oil from the hydraulic clutch into the insertion hole, and a downstream side oil passage having another opening part discharge the oil from the other opening part to the downstream side of the insertion hole. A position of a first virtual line (L1) which passes through the center-of-gravity point of a cross section of the opening part of the upstream side oil passage and a position of a second virtual line (L2) which passes through the center-of-gravity point of a cross section of the insertion hole are arranged so as to be different from each other.

The invention relates to a method for assembling a clutch control unit (30; 30a; 50; 50a) in a transmission clutch housing (24; 31) of a vehicle, the method comprising the steps of coupling the clutch control unit (30; 30a; 50; 50a) to the transmission clutch housing (24; 31) by a first guide means (33) comprising a first pin (34; 34a; 54; 54a) and a first slot (35; 35a; 55; 55a); coupling the clutch control unit (30; 30a; 50; 50a) to the transmission clutch housing (24; 31) by a second guide means (36) comprising a second pin (37; 37a; 57; 57a) and a second slot (38; 38a; 58; 58a); and displacing the clutch control unit (30; 30a; 50; 50a) from a first position at least partially outside the transmission clutch housing (24; 31) to an operative second position within the transmission clutch housing (24; 31); wherein the clutch control unit (30; 30a; 50; 50a) is guided by the first and second guide means (33; 36) along a predetermined path during the displacement between the first position and the second position.

The invention concerns a hydraulic pump (6, 7) for a clutch mechanism (1) of a vehicle transmission, the hydraulic pump (6, 7) comprising a body (60, 70) in which there are formed a chamber (61, 71), an inlet opening (62, 72) through which a hydraulic fluid can enter the chamber (61, 71), and an outlet opening (63, 73) through which the hydraulic fluid can leave the chamber (61, 71), the chamber (61, 71) receiving at least one hydraulic wheel of the hydraulic pump (6, 7), the inlet opening (62, 72) and the outlet opening (63, 73) each opening into the chamber (61, 71) of the body (60, 70), the body (60, 70) of the hydraulic pump (6, 7) being delimited by an outer edge (80) on which at least one peripheral groove (81, 82) is formed, configured to receive a gasket (83, 84), the gasket (83, 84) being intended to provide contact sealing between the body (60, 70) of the hydraulic pump (6, 7) and a hydraulic connection interface (4) of the clutch mechanism (1).

An actuator assembly having an outer section and an inner section that are moveable relative to each other has a clutch assembly mounted on the outer section. The clutch includes a clutch housing, a clutch motor, and a plurality of pins. The clutch housing is rotatable between an engaged position and a disengaged position. The clutch motor is coupled to the clutch housing and is configured to rotate the clutch housing between the engaged position and the disengaged position. The pins are disposed within, and extend radially inwardly from, the clutch housing, and each pin is movable between an extended position and a retracted position. When the clutch housing is rotated into the engaged position, the pins are moved to, and retained in, the extended position, and when the clutch housing is rotated into the disengaged position, the pins are movable to the retracted position.

A clutch assembly including a cover and a mounting ring having a plurality of arms extending outwardly to a strap mount. The assembly includes strap springs. Each strap spring has a first end connected to the strap mount and a second end opposite the first. The clutch assembly includes an annular pressure plate and a plurality of outwardly extending tabs. Each tab is releasably connected to the second end of a corresponding strap spring so the strap springs biases the pressure plate away from the flywheel. The assembly includes a keeper and a resilient diaphragm spring that biases the pressure plate toward the flywheel, deforming each strap spring, so the strap spring biases the annular pressure plate away from the flywheel. The diaphragm ring is resiliently deformable to a deformed position, allowing each strap spring to move the pressure plate away from the flywheel.

A greasing device is configured to feed grease to a contact portion between a release bearing and a pressing part of a clutch release fork in a clutch release mechanism configured such that the pressing part presses the release bearing. The greasing device includes: a greasing pipe configured to extend from the outside of a clutch housing that houses a clutch main body including the release bearing toward the contact portion through a through-hole provided in the clutch housing, and to feed grease to the contact portion; and a positioning part configured to position the greasing pipe by coming into contact with each of an inner surface of the through-hole and a flat surface of the clutch release fork.

A torque coupling system including an input shaft, a main cam affixed to the input shaft, a clutch housing that surrounds the input shaft and provides an inter space, a scoop plate affixed to the clutch housing, an external housing that encloses the clutch housing and provides an outer space, and a main clutch that is articulable between a disconnected drive mode and a all-wheel drive mode. In the disconnected drive mode the main clutch disengages the input shaft from the clutch housing and the main cam rotates with the input shaft to transfer lubricant from the inner space to the outer space while in the all-wheel drive mode the main clutch engages the input shaft with the clutch housing and the scoop plate rotates with the clutch housing to scoop the lubricant from the outer space to inner space through the catch tank.

A power unit includes: a crankcase which accommodates a crankshaft and a main shaft arranged in parallel to each other; a crank side cover which covers one end portion of the crankshaft from the outside in an axial direction of the crankshaft; a primary driven gear which is provided in the main shaft and meshes with a primary drive gear of the crankshaft; a clutch provided at one end portion of the main shaft; and a clutch cover which covers the clutch from the outside in an axial direction of the main shaft and is fastened and fixed to a packing surface provided on the crankcase to surround the clutch, wherein the primary driven gear and the packing surface overlap in a virtual straight line when viewed from the axial direction of the main shaft.