Abstract: A wet brake system, a method therefor, and a vehicle including such system, the system comprising: a housing enclosing a brake compartment, at least one friction plate rotatably disposed within the brake compartment, at least one separator plate disposed within the brake compartment, coupled to the housing and configured to be frictionally engaged with the at least one friction plate for braking the at least one friction plate, the at least one friction plate and the at least one separator plate configured to be at least partially submersed in a liquid held within the brake compartment, and a liquid reservoir, wherein a drain port is arranged such that the at least one friction plate when rotating is configured to convey liquid held within the brake compartment to the liquid reservoir via the drain port and a drain channel for draining the brake compartment.

Abstract: A hybrid module for a drive train of a motor vehicle includes a housing, an electric machine disposed within the housing. The electric machine having a stator and a rotor arranged radially within the stator. The hybrid module having at least one hydraulically cooled friction clutch arranged radially within the rotor. A cooling device is provided that is configured to cool a plurality of friction surfaces of the at least one friction clutch and which has an annular collecting region coupled to the rotor for conjoint rotation therewith and entraining a hydraulic medium during operation, as well as a scoop section, which is secured to the housing and projects into the collecting region and via which the hydraulic medium is fed to a retaining chamber during operation.

Abstract: The invention is concerned with an oil consumer system having at least one rotating component and at least one oil supply from an oil tank, wherein the oil consumer system has an oil return to a first tank and an oil supply via at least one second tank.

Abstract: A transmission device that includes a first shaft, a second shaft to which torque is transmitted from the first shaft via a torque transmitting mechanism, a tubular drive gear attached to the second shaft, and a driven gear that meshes with the drive gear, wherein the drive gear includes a plurality of outer teeth that are each meshed with a corresponding one of gear teeth of the driven gear and a fitting portion that is formed on an inner peripheral surface of the drive gear and that is fitted to the second shaft so that the drive gear rotates integrally with the second shaft.

Abstract: A transmission device that includes a first shaft, a second shaft to which torque is transmitted from the first shaft via a torque transmitting mechanism, a tubular drive gear attached to the second shaft, and a driven gear that meshes with the drive gear, wherein the drive gear includes a plurality of outer teeth that are each meshed with a corresponding one of gear teeth of the driven gear and a fitting portion that is formed on an inner peripheral surface of the drive gear and that is fitted to the second shaft so that the drive gear rotates integrally with the second shaft.

Abstract: A power system includes: a rotating body; a housing that accommodates the rotating body; and a storage portion that is provided in a bottom of the housing to store a liquid medium. The rotating body is partially located in the storage portion, and an inner surface of the housing includes a protrusion that extends above the rotating body to intersect with a rotation direction of the rotating body.

Abstract: A pressure plate of a clutch device includes a clutch outer member for supporting friction discs, and a clutch center member for supporting clutch discs. The pressure plate has a deep hole portion for accommodating a clutch spring acting between the pressure plate and the clutch center member; and a through hole at a center thereof extending between an inside and an outside of the clutch device in a clutch axis direction. Oil is supplied from the outside into the through hole. The pressure plate has a radial passage extending in a radially outward direction from the through hole at an axially inner end portion of the through hole to make the inside and outside of the through hole communicate with each other. An annular rib is formed on a peripheral surface of an outer end portion of the through hole extending toward the center of the through hole.

Abstract: An active transfer case for a motor vehicle may comprise a clutch assembly configured to rotatably couple a primary output shaft to an input sprocket when engaged. The clutch assembly may include a clutch pack having a plurality of clutch plates, and a clutch hub having a clutch hub center defined between an inner ring and an outer ring. The outer ring of the clutch hub may have a hub aperture placing the clutch hub center in fluid communication with the clutch plates. The active transfer case may further comprise a retainer slidingly inserted in the clutch hub center between the inner ring and the outer ring. The retainer may include a retainer aperture that aligns with the hub aperture of the clutch hub when the clutch assembly is engaged to permit a flow of a lubricant fluid from the clutch hub center to the clutch plates.

Abstract: An engine clutch device includes first and second alternately stacked frictional power transmitting members and a clutch pressure member for axially bringing the frictional power transmitting members into pressure contact. The clutch device includes an oil supply portion adjacent to a distal end of power transmission shaft. The clutch device has an oil supply structure including a clutch lifter member with a flange portion axially facing the distal end of power transmission shaft, to axially shift the clutch pressure member to release the pressure contact of the frictional power transmitting members. The flange portion has a bowl-shaped portion extending axially to surround the one end portion of the power transmission shaft. The bowl-shaped portion including the flange portion functions to guide oil axially inward along the power transmission shaft and serves to provide an improved oil supply effect to the frictional power transmitting members.

Abstract: A frictional shift element for a transmission of a vehicle, including a first friction element and a second friction element, wherein one friction element of the first and second friction elements has an approximately annular friction surface, and the other friction element of the first and second friction elements has an approximately annular base body and a plurality of friction surface elements distributed over a periphery of the approximately annular base body. The friction surface and the plurality of friction surface elements are brought into contact with each other in an overlap area for transmitting torque, wherein the friction surface elements protrude radially into the overlap area. The one friction element with the friction surface, the other friction element, and the friction surface elements are each formed as one piece. The one friction element and the approximately annular base body of the other friction element are spaced radially apart.

Abstract: A device that employs shear forces to transmit energy includes an outer housing assembly, a disk, and a reservoir with a working fluid. The disk is received in and rotatable relative to the outer housing assembly. A working cavity is formed between a rotor portion of the disk and the outer housing assembly into which the working fluid is received to create shear forces. A plurality of flow altering structures are disposed on the outer housing assembly and are configured to reduce a thickness of a boundary layer of the working fluid in the working cavity in areas that are local to the flow altering structures.

Abstract: Multi-plate brake or clutch includes a carrier, a fluid dispensing device and plurality of friction plates located around the carrier and the fluid dispensing device. The carrier includes a carrier body, a plurality of external splines located around a rim of the carrier body extending outwardly from the rim, and a passageway that extends through the carrier body to a passageway outlet. The fluid dispensing device includes a body defining a reservoir with an opening in fluid communication with the passageway outlet to allow fluid to be dispensed when a volume of fluid in the reservoir exceeds a predetermined volume.

Abstract: A hydrokinetic torque converter including a secondary piston for purposes of enhancing operation of the lock-up feature, and the method of operating such a converter. The secondary piston moves axially behind the turbine-piston to urge respective lock-up clutch friction surfaces into phased engagement. In an initial phase of engagement, friction surfaces between the secondary piston and turbine-piston engage to begin the reduction of relative rotary motion between the converter impeller and turbine-piston. This initial phase of slowing relative movement between the impeller and turbine-piston reduces pressure within the torus and the associated fluid forces separating the friction surfaces of the lock-up clutch. The secondary piston also slows and eliminates fluid flow from within the torus past the lock-up clutch and further reduces engagement resistance of the lock-up clutch owing to the lessening fluid pressure and flow.

Abstract: A hollow double-acting cylinder assembly may be mounted over a shaft and to a housing. A moveable piston of the cylinder assembly connects to a sliding sleeve of an over-center mechanism and the sliding sleeve with a thrust bearing allowing it to push and pull the sleeve mechanism with cylinder action. A toggle action of the over-center mechanism locks clutch without the need to sustain pressure on the cylinder after engagement/disengagement motion. As the clutch is typically engaged for sustained periods of time, this prevents constant hydraulic pressure applied to the over-center mechanism and significantly reduces wear. Hydraulic/pneumatic hoses may pass through the housing and connect to engage and disengage bores of the cylinder via remotely actuated control valve(s).

Abstract: A friction clutch for a motor vehicle for frictional coupling a first shaft and a second shaft, comprising a plurality of clutch discs articulated interactively on a clutch basket and a clutch hub, wherein the first shaft is connected to the clutch basket and the second shaft is connected to the clutch hub and the clutch discs are selectively coupled by an associated actuation unit. Associated with the clutch basket is an oil-collection and guiding arrangement through which oil spun off the clutch basket is collected and delivered into a collection region outside the clutch basket. A switching device coupled to the actuation unit controls the backflow of the oil from the collection region outside the clutch basket (KK) in the direction of the clutch discs.

Abstract: A clutch housing for a clutch assembly of a vehicle, the clutch housing comprising a fluid pathway at least partially disposed within a wall of the clutch housing, the fluid pathway forming at least a portion of a fluid line between a clutch slave cylinder and a clutch master cylinder, the fluid line being configured to transfer hydraulic fluid between the clutch slave cylinder and the clutch master cylinder.

Abstract: A controller for a vehicle transmission in which a continuously variable transmission mechanism able to continuously change its speed ratio and a transmission mechanism having a constant speed ratio are provided in parallel between an input shaft and an output shaft. The transmission includes a friction engagement mechanism and an intermeshing engagement mechanism, the intermeshing engagement mechanism being arranged in series with the friction engagement mechanism, the intermeshing engagement mechanism setting the transmission mechanism to a state where torque is transmittable between the input and output shaft, in changing to a state where the intermeshing engagement mechanism is engaged and the transmission mechanism is able to transmit torque to the output shaft, a torque capacity of the friction engagement mechanism is configured to be increased to a torque capacity to such extent that the transmission mechanism rotates without a delay of start of engagement of the intermeshing engagement mechanism.

Abstract: An arrangement is provided for supplying oil to a brake arranged for braking an output shaft of a planetary gear. The arrangement includes a rotatable impeller for supplying oil to the brake and the impeller is arranged to be rotated by an input shaft of the planetary gear.

Abstract: A lubrication structure of a driving force transmission apparatus includes a rotating shaft, a friction engagement device, a piston member, a piston housing, a component, a piston chamber, a moving member, a holding member, a rotation stopper, and a hydraulic oil path. The rotating shaft has a shaft direction and is rotatable around the shaft direction. The friction engagement device includes a friction engagement unit which is arranged around an outer circumference of the rotating shaft and in which a plurality of friction materials are alternately laminated along the shaft direction. The piston member is provided movably along the shaft direction to press the friction engagement unit so that the plurality of friction materials engage with each other. The piston housing houses the piston member.

Abstract: A clutch apparatus includes a clutch outer member for supporting friction discs, which are nonrotatable relative to the clutch outer member, and are axially slidable along a clutch axis; a clutch inner member for supporting clutch discs, which are nonrotatable relative to the clutch inner member, and are axially slidable along the clutch axis, and a pressure plate having a deep recess for accommodating a clutch spring engaged with the clutch inner member. The deep recess includes a bottom portion having a spring seat for receiving the clutch spring, and a partially cylindrical shape wall portion having an axis parallel to the clutch axis. The wall portion is oriented towards the clutch axis. The deep recess has a communicating portion formed therein for establishing the communication between the inner and outer surfaces of the wall portion so as to discharge oil towards the friction and clutch discs during operation.

Abstract: A cavity 135 having a closed end wall 135a facing an end of a rotational shaft 71 and receiving the end of the rotational shaft 71 therein is defined in an inner surface of a case cover 55 such that supply oil passages 125, 126 are open at inner circumferential surfaces of the cavity 135. At least one radial joint hole 138 is defined in an end portion of the rotational shaft 71 and extends radially of the rotational shaft 71, the radial joint hole 138 having an inner end connected to another oil passage 111 in the rotational shaft 71 than a particular oil passage 112 in the rotational shaft 71. The radial joint hole 138 is connected to a corresponding supply oil passage 125 of the supply oil passages 125, 126, in the cavity 135.

Abstract: A torque converter includes, in a case coupled to an output shaft of an engine, a torus formed from a pump, a turbine and a stator having a one-way clutch on the inside thereof, and a lock-up clutch. In addition, in this torque converter, a fluid from a pump is introduced from a space between a stator shaft (F2) and a turbine shaft (F1), and discharged from a space between a pump sleeve (23) and the stator shaft (F2) through a space where the lock-up clutch is disposed and the torus. Moreover, this torque converter further includes a seal member (80) which is disposed at a side that is closer to the engine than a spline engagement part (P2) of an inner race (52) and the stator shaft (F2), and seals a space between an inner peripheral face of the inner race (52) and an outer peripheral face of the stator shaft (F2).

Abstract: A torque transfer device, in particular in the power train of a motor vehicle, for transferring torque between a drive unit and a shaft that is rotatable around an axis of rotation, in particular a transmission input shaft, having a hydrodynamic torque converter, which includes a converter cover that is connectable to or connected to the drive unit, which converter cover may be coupled via an impeller to a turbine wheel to transfer torque, which turbine wheel is bridgeable, to transfer torque, by a torque converter lockup clutch, which includes a piston that is movable to a limited extent in the axial direction and is constructed as a multi-plate clutch with a plate pack that includes outer plates which are connected to an outer plate carrier in a rotationally fixed connection, and inner plates which are connected to an inner plate carrier in a rotationally fixed connection.

Abstract: A floating-disk type brake system that includes floating disk assemblies placed respectively in spaces between a rotating member, such as a wheel of a transportation machine or a rotating shaft of a machine tool, and a stationary member to reduce differences in the rotating speed of adjacent sliding surfaces of the floating disk assemblies in frictional sliding engagement. The floating-disk type brake system includes a first floating disk assembly and a first disk assembly that are arranged between the ring gear and the planet carrier of a planetary gear built in a transmission or the like, and the first floating disk assembly and the first disk assembly are pressed together into frictional engagement to brake a rotating shaft.

Abstract: A rotational coupling device having improved lubrication is provided. The device includes a hub disposed about a rotational axis. A rotor is supported on, and configured for rotation about, the hub and defines a radially extending wall and a chamber on one side of the wall surrounding said hub and defining a sump containing a fluid. An armature is supported on the hub for rotation therewith within the chamber and axially spaced from the wall. Clutch plates are disposed between the rotor wall and armature and rotatably coupled to the rotor or armature. A field shell is disposed on an opposite side of the rotor wall from the armature and houses a conductor. One or more tubes have an end submerged in the fluid and extend through apertures in the armature. Rotation of said armature draws fluid through the tubes and onto the clutch plates.

Abstract: A fluid transmission device comprises: a cover member coupled to a drive shaft; a converter mechanism constituted by a pump impeller coupled to the cover member, a turbine runner connected to a driven shaft, and a stator disposed between the pump impeller and the turbine runner, a converter chamber through which a working fluid flows being formed in the interior thereof; a lockup mechanism having a clutch piston provided in a lockup chamber that is surrounded by the cover member and the turbine runner, which engages and disengages the drive shaft and driven shaft by supplying a control fluid to a clutch oil chamber surrounded by a back surface of the clutch piston and the cover member; an inlet passage for leading the working fluid into the lockup chamber from the outside; a communicating passage for leading the working fluid into the converter chamber from the lockup chamber; and an outlet passage for leading the working fluid to the outside from the converter chamber.

Abstract: A torque converter includes a cover for receiving torque from a prime mover, an impeller fixed to the cover to form a housing for the torque converter, a turbine disposed in the housing for receiving torque from the impeller, and a clutch backing plate fixed to the housing and arranged to receive a force, in an axial direction, from the turbine during operation of the torque converter. In some example embodiments, the turbine includes a thrust plate for thrust engagement with the clutch backing plate. In an example embodiment, the turbine includes a turbine shell and the thrust plate is attached to the turbine shell.

Abstract: An equalizing unit of a drive train of a motor vehicle includes a clutch device to be oiled in driving mode. In order to stop drag torques which act on the clutch device from the outside, and result in increased dissipation when said clutch device is not required due to an operating state, measures are provided which promote the dry running of the clutch device. The measures include the spatial-functional separation of the oil delivery device from the clutch device and the provision of a braking or decoupling device by which the oil delivery device can be deactivated if there is no oil requirement.

Abstract: A transmission is provided having an input member, an output member, at least three planetary gear sets, a plurality of coupling members, and a plurality of torque transmitting devices. Each of the planetary gear sets includes first, second and third members. The torque transmitting devices include clutches and brakes actuatable in combinations of two to establish at least ten forward gear ratios and one reverse gear ratio. At least one of the torque transmitting mechanisms includes a backing plate having an annular outlet for distributing cooling fluid.

Abstract: A heavy-duty vehicle brake assembly with a sealing interface includes a brake shoe, which includes a shoe table mounted on a web and a brake lining mounted on the shoe table. The shoe table is coated with a zinc-rich coating to form the sealing interface between the brake lining and the shoe table. The sealing interface resists the formation of corrosion cells on the brake shoe table, which in turn reduces the build-up of significant rust between the brake shoe table and the brake shoe lining, thereby preventing cracking and potential dislodging of the lining, while also facilitating replacement of linings when they eventually wear. A method of constructing a heavy-duty vehicle brake assembly with a sealing interface is also provided.

Abstract: The casing of an automatic transmission has been modified by providing a hole through a wall of the casing adjacent the PTO port. The PTO port cover plate has also been modified to provide a curved ridge which functions to direct lubricating fluid, which normally collects in the area of the PTO port, to the lubrication hole. The fluid goes through the hole to the interior of the transmission, wherein grounded clutch plates are continuously lubricated, both when the clutch is engaged and disengaged.

Abstract: A multi-plate clutch including a clutch hub having a cylindrical portion; a plurality of clutch plates splined to the outer periphery of the cylindrical portion of the clutch hub, and a plurality of spline teeth being formed on the outer periphery of the cylindrical portion of the clutch hub. A recessed portion is formed on the inner side of each spline tooth, and a weir portion is formed at one end of each recessed portion by depressing one portion of the spline tooth to the inner side on one end side of the cylindrical portion. Thus forming a depressed portion, and removing, with one portion of the depressed portion left behind, a portion of the cylindrical portion on the one end side of the one portion of the depressed portion.

Abstract: The present invention relates to a multiple clutch device having a first clutch which is assigned a first actuating piston with a first pressure chamber and a first pressure equalization chamber, and having a second clutch which is assigned a second actuating piston with a second pressure chamber and a second pressure equalization chamber, a first crossflow channel being provided for setting the hydraulic fluid column in the first pressure equalization chamber and a second crossflow channel being provided for setting the hydraulic fluid column in the second pressure equalization chamber. According to the invention, the first and second crossflow channels are arranged in such a way that both the oil which is discharged via the first crossflow channel and the oil which is discharged via the second crossflow channel can be fed to the first and second clutches.

Abstract: A compact universal fluid-actuated clutch employs a pair of tapered roller bearings between a cover plate and output shaft, the roller bearings serving to not only rotationally maintain the output shaft, but receive and transfer clutch reactionary forces therethrough. Lubrication to the tapered roller bearings serves to lubricate not only a thrust bearing through which the actuation forces are transferred, but also to lubricate the clutch, as well, in the embodiment of a wet clutch. Also provided is an output shaft brake assembly, which is also lubricated through the tapered roller bearings, and which is of a small compact nature, consisting of a piston rotatably secured to the end cover, and a rotor operatively attached to the output shaft. The invention substantially eliminates the need for rotary unions and rifle boring of the output shaft, and allows for adaptation of the shaft to direct or belt drive equipment connections.

Abstract: A torque converter, including: turbine and pump shells; a turbine hub; a drive hub including a first orifice; and a lock-up clutch. The clutch includes: a clutch plate directly engaged with the turbine hub, fixed with respect to rotation to the turbine hub, and sealed with respect to the turbine hub; an apply plate the rotation of which is fixed to the rotation of the pump shell; and a piston plate. The converter includes a first fluid chamber at least partially formed by the piston, clutch and apply plates; and a second fluid chamber partially formed by the clutch and apply plates and the turbine and pump shells. When the lock-up clutch is closed, the first chamber is sealed except for the first orifice and one of a second orifice through the apply plate or a first fluid flow path through the lock-up clutch to the second fluid chamber.

Abstract: A method reduces the noise in the drive train of a motor vehicle having an automatic transmission or a manual transmission with a controllable oil pressure supply and/or automatic starting clutch. An engine sided drive unit is connected to the transmission input shaft by way of a spline connection, wherein noises in the drive train are caused by a clearance fit in the spline connection between the engine sided drive unit and the transmission input shaft. The transmission control is adapted for reducing the noise when in neutral.

Abstract: A wet clutch comprising at least one friction disk (10) which is loaded by a piston (5) against an end disk (4). In order to run a forced pressure medium flow over the friction surfaces (11, 12) of the wet clutch, two pressures cavities (7, 8) having a connection in the region of the friction surfaces, are loaded with varying pressures. In order to improve such arrangements, the invention proposes that the leakage flow flowing over the supports of the friction disks is limited.

Abstract: A hydraulic clutch assembly for a motor vehicle driveline is provided. The clutch assembly comprises an input member, and output member and a friction clutch pack operably disposed therebetween for controlling torque transfer. A first fluid circuit contains hydraulic based fluid at a first pressure and is in fluid communication with the friction clutch pack for lubrication thereof. A second fluid circuit is in fluid communication with the first fluid circuit for replenishing the second fluid circuit with the hydraulic based fluid at a second pressure that is less than the first pressure. The clutch assembly further comprises a motor and a gear train. A first piston is in fluid communication with the second fluid circuit for delivering the hydraulic based fluid thereto A second piston is translated by the hydraulic based fluid displaced by the first piston to actuate the friction clutch pack.

Abstract: A starting device includes a housing; an output side member; a clutch mechanism; a working oil passage that supplies working oil to a hydraulic chamber of the clutch mechanism from an oil pressure source side; and a lubricating oil passage including a supply oil passage that supplies lubricating oil to the housing from the oil pressure source side and a return oil passage for returning the lubricating oil to the oil pressure source side from the housing, wherein the working oil passage and the lubricating oil passage are formed to overlap at least partially in an axial direction.

Abstract: A torque transmission apparatus includes first and second torque transmission members 3, 5, a frictional clutch 7 for transmitting a torque between the torque transmission members 3, 5, a stationary housing 11 accommodating a coupling 9, a spatial part for enclosing oil in the stationary housing 11 and an opening 15 formed in a part of the coupling 9 so that the oil in the stationary housing 11 is introduced into the coupling 9.

Abstract: A disk clutch or brake, with inner and outer disk carriers that respectively carry inner and outer disks. The inner and outer disks are arranged axially in alternation next to one another. At least one of the inner and outer disk carriers have radial openings through which coolant flows toward the disks. The inner and/or outer disk carrier have a toothed component, which is fixed to and at least partially axially and radially encompasses a basic component. The inner or outer disks are fixed toothed component to prevent relative rotation while allowing axial displacement. Radial openings are formed in the basic and toothed components to enable a flow of coolant.

Abstract: A wrap spring device includes a first hub and a second hub located axially to the first hub. A wrap spring is located externally and concentrically about the first and second hubs and glycol-based solution surrounds the spring. The spring is engaged and disengaged thereby causing the first and second hubs to engage and disengage each other.

Abstract: The present invention broadly comprises a clutch assembly with a radial flow chamber including a first hub and a carrier. The first hub and carrier form at least one first opening and a first portion of at least one radial chamber or passageway in the clutch assembly. First and second radially disposed segments of the first hub and carrier, respectively, partially define the first portion. A second portion of the chamber is formed between the first segment and a third radially disposed segment connected to a second hub. Openings in the first segment connect the first and second portions. A third portion of the passageway is formed between the second segment and a fourth radially disposed segment. A plate forms at least a portion of an axial barrier with respect to a second clutch in the clutch assembly.

Abstract: A clutch device for a motor vehicle has friction elements around which coolant flows and which, by way of a piston, can be pressed against one another for torque transmission. The first piston side is acted on with operating pressure, and the second piston side is acted on with coolant pressure. A valve, by which the operating pressure can be set, and a device which makes a reaction of the coolant pressure on the operating pressure possible are provided. The device is designed as a hydraulic resistance cascade and is connected between coolant supply and coolant return lines of the friction elements. A return pressure line branches off in the center of the hydraulic resistance cascade and is connected to the valve.

Abstract: A centrifugal clutch for a vehicle includes a clutch housing having friction plates, a clutch boss having clutch plates, a pressure plate, and roller weights that press the pressure plate in a direction such that the friction plates and the clutch plates are brought into frictional contact with each other when the roller weights receive a centrifugal force. The vehicle power unit includes a main shaft which has an oil supply passage formed therein. The clutch includes a first oil supply path that supplies oil via the oil supply passage to the friction and clutch plates. The clutch includes a second oil supply path that supplies oil via the oil supply passage to the roller weights. The first and second oil supply paths are formed individually to allow independent adjustment of oil supply to each path.

Abstract: A device for actuating a disk clutch (B) in a transmission, which consists of an actuating piston-cylinder arrangement with rotation pressure compensation, whose actuating piston (6) is associated with a pressure chamber (4) for a pressure medium fluid to produce the actuating force, and in which a pressure compensation chamber (26) is provided, in which by virtue of centrifugal action a pressure medium fluid produces on the actuating piston a compensation force directed in opposition to the actuation direction of the actuating piston, the pressure chamber and the pressure compensation chamber each having a delivery line (9, 21) for pressure medium fluid.

Abstract: An apparatus includes an input-side rotating member 2 driven by an engine (driving source) 90, an output-side rotating member 3 for driving an input member, such as a gear part 25 of a rear differential (driving-force distributing mechanism) 97 between wheels, a friction clutch 4 arranged between the input-side rotating member 2 and the output-side rotating member 3, a carrier housing (stationary member) 5 capable of accommodating the rear differential 97 and the friction clutch 4, an oil accommodating space (lubricant accommodating space) S formed in the stationary member 5 and an oil pump 6 driven by the output-side rotating member 3 to supply the friction clutch 4 with oil 600.

Abstract: A motor vehicle hydraulic pump (1) is provided comprising a gerotor rotor set or planetary rotor set and at least two output stages. A first output stage (10) of the hydraulic plump (1) is connected to a lubricant, in particular, a clutch lubricant. A second output stage (11) of the hydraulic pump (1) is connected to at least one clutch (2) of the actuation thereof. The invention also provides a method for actuating at least one clutch which is arranged in the motor vehicle by means of a motor vehicle hydraulic pump, whereby an inter-connection of a volume flow outlet of the first step (10) and the second step (11) of the hydraulic pump (1) takes place according to requirements for actuating the clutch.

Abstract: A clutch actuation mechanism having a plurality of friction plates engaged with a clutch outer and a clutch inner in a relatively non-rotatable manner and arranged alternately between a bearing plate portion and a pressing plate portion. A clutch disengage/engage control mechanism for switching disengagement/engagement of the clutch actuation mechanism. A clutch piston having opposite sides facing toward a control hydraulic chamber and a hydraulic canceler chamber. A division wall member forming the hydraulic canceler chamber between the division wall member and the clutch piston for forming an oil passage, which introduces lubricating oil toward the friction plates, in cooperation with the clutch inner. A control hydraulic chamber, hydraulic canceler chamber, and division wall member are arranged within a range corresponding to the space between the outer surfaces of a bearing plate portion and pressing plate portion and radially inward of a clutch actuation mechanism.

Abstract: There is provided a lubricating structure of a planetary gear mechanism which can simplify the outer shape of an introducing section formed by an oil catch plate, for introducing lubricating oil, and ensure a high degree of design freedom. In a double pinion type planetary gear mechanism, the distance from the axis of a carrier to the outermost edge of an opening in the direction of the carrier's diameter in an lubricating oil introducing hole formed in an outer diameter side pinion shaft and the distance from the axis of the carrier to the outermost edge of an opening in the direction of the carrier's diameter in an lubricating oil introducing hole formed in an inner diameter side pinion shaft are equal to each other. Therefore, lubricating oil can be supplied to the inner diameter side pinion shaft through the introducing section irrespective of the amount of lubricating oil that can be supplied to the outer diameter side pinion shaft.