Abstract: A self-cooling system includes at least one rotating component and a housing configured to enclose the at least one rotating component. The housing includes at least one inlet bore and at least one exhaust bore. The at least one exhaust bore is disposed radially outward from a radial position of the at least one inlet bore with respect to an axis of rotation of the at least one rotating. The at least one inlet bore and the at least one exhaust bore are positioned to establish a pressure differential configured to circulate a fluid into the at least one inlet bore, through the housing, and out the at least one exhaust bore. The system does not have any feature in addition to the at least one rotating component configured to drive the fluid into the at least one inlet bore, through the housing, and out the at least one exhaust bore.

Abstract: A friction clutch for coupling a drive shaft of a motor vehicle engine to a transmission input shaft of a motor vehicle transmission includes a lamina, an axially movable contact plate, and a plurality of friction disks. The lamina has a first friction surface facing in a first axial direction, and a second friction surface facing in a second axial direction, opposite the first axial direction. The contact plate has a plurality of holders arranged to hold the lamina. Each of the holders forms a positive connection with the lamina in the circumferential direction, and each of the first friction surface and the second friction surface is frictionally connectible to a friction disk to transmit torque. A first friction disk is arranged to be positioned between a counter plate and the lamina, and a second friction disk is positioned between the lamina and the contact plate.

Abstract: A clutch for an automatic transmission includes a clutch pack having a first set of friction disks interleaved with a second set of friction disks. The clutch further includes an annulus having an outer surface connected to the first friction disks and an inner surface. The annulus defines oil holes extending from the inner surface to the outer surface to permit oil to flow from the inner surface to the clutch pack. Air passageways are defined in the annulus and extend through the annulus permitting air to flow from the inner surface to the clutch pack to reduce drag losses between the first and second sets of disks. Each of the air passageways have an entrance that is radially inboard of an entrance of each of the oil holes.

Abstract: Power transmission systems including clutch arrangements and systems are adapted to be used in marine and other environments. Such power transmission systems may include clutch arrangements that provide more effective power transmission capabilities as well as greater durability and longer life. Slipping clutch arrangements may effectively vary the output speed of a clutch arrangement from the speed of the engine or other driver as desired for the particular application. Various clutch arrangements also provide for greater flexibility and drive options, lighter weight, and diverse types of capabilities.

Abstract: A dual-clutch for a motor vehicle includes an input, first and second outputs, friction plates for producing a drive connection between the input and the first and second outputs alternately, a housing including an inlet and an outlet, containing at least a portion of the friction plates, and a cooling system including a fan impeller rotating with the input and producing an air stream flowing through the housing from the inlet to the outlet.

Abstract: A dual clutch transmission for motor vehicles, has two transmission sections, a dry dual clutch (1), which transmits the torque from the engine selectively to one of the two transmission sections, and a cooling system having a fan impeller system for active air cooling of the dual clutch (1). To optimize the individual functional parts of the cooling system and to reduce the clutch masses, it is proposed that the central disk (3) and/or at least one contact pressure plate (4, 5) is/are designed as a fan impeller of the fan impeller system (21). The central disk (3) and/or at least one of the contact pressure plates (4, 5) has/have passages which extend radially or have a radial component.

Abstract: A latch subassembly for a motor vehicle drive train is provided. The latch subassembly includes a bearing arrangement including at least one thrust bearing. The latch subassembly also includes a diaphragm spring. The diaphragm spring includes a first end for axially mounting in a housing and a second end held by the at least one thrust bearing, the second end being axially movable between a first position and a second position within the bearing arrangement. A disconnect assembly and a method of forming a disconnect assembly are also provided.

Abstract: A drive power transmission system includes-a clutch hub, a clutch drum and a dry clutch. The dry clutch includes-first and second clutch plates, a friction facing and a cover member. The first clutch plate is joined to the clutch hub. The second clutch plate is joined to the clutch drum. The cover member has an external air intake hole and an external air discharge hole. These holes of the cover member are positioned such that, due to rotation of at least one of the clutch hub and the clutch drum, an air flow is generated that draws external air is through the external air intake hole and along the clutch hub to a radially inward location of reduced air pressure, then passes radially outward to a radially outward location of increased air pressure, and then passes along the clutch drum and out the external air discharge hole.

Abstract: The present disclosure relates to a dry-clutch transmission having various cooling techniques. Some techniques include forming different structural features on transmission components so as to create an organized air flow. The disclosed techniques are applicable to both opened and closed transmission housings.

Abstract: A clutch for a manual or automatic transmission according to the present invention includes an axial fan or turbine disposed on a shaft extending between the clutch and the transmission. Air is supplied to the turbine through one or more radial passageways between the clutch and transmission housings and is provided through an annular passageway around the shaft. Air from the annular passageway is then dispersed generally radially between the clutch plates or disks and other clutch components to absorb and carry away heat generated during clutch operation.

Abstract: A clutch device includes an input rotor, a rotation support mechanism, a first pressure plate, a second pressure plate, a first clutch disc assembly and a second clutch disc assembly. The input rotor includes a first disc portion and a second disc portion disposed away from the first disc portion at a predetermined space. The rotation support mechanism supports the input rotor for allowing the input rotor to be rotated with respect to a first input shaft and a second input shaft.

Abstract: The present invention is to provide a clutch device that keeps a half-clutch range wide for a long time. A clutch device 1 is arranged in such a manner that an intermediate ring 24 is disposed on the pressure plate 23 so as to be slightly movable in a direction of pressing by a diaphragm spring 21; air passageways 31 are radially disposed at regular circumferential intervals between the intermediate ring 24 and the pressure plate 23 so as to let the inner and outer peripheries communicate with each other; plate springs 25 are disposed in the air passageways 31 to bias constantly the intermediate ring 24 and the pressure plate 23 in a direction of separating from each other; and a force of the pressing operation by the diaphragm spring 21 is transferred to the pressure plate 23 via the intermediate ring 24 and the plate springs 25.

Abstract: An arrangement of a dual clutch transmission that incorporates a positive pressure lubrication cooler heat exchanger that is integrated into a cover of a wet clutch module of the transmission is provided. Additionally, a method of assembling a wet dual clutch transmission assembly is provided.

Abstract: The present disclosure relates to durability enhancement techniques for a dry-clutch vehicle transmission. A cooling system that provides a direct convective cooling path to friction surfaces is disclosed. Also disclosed is a continuously variable clutch wear compensation assembly configured to adjust the position of clutch assembly components on-demand or as needed.

Abstract: The present disclosure relates to a dry-clutch transmission having various cooling techniques. Some techniques include forming different structural features on transmission components so as to create an organized air flow. The disclosed techniques are applicable to both opened and closed transmission housings.

Abstract: The invention relates to a friction clutch in a motor vehicle, comprising a clutch bell housing (210), at least one air inlet duct (130) arranged on the clutch bell housing for cooling the clutch bell housing, at least one air outlet duct (140) arranged on the clutch bell housing, and at least one temperature sensor (120). The invention further relates to a method for determining a clutch temperature of a friction clutch.

Abstract: The invention relates to a fan drive device (1) for driving at least one fan impeller (2), comprising at least one first drivable coolable housing element (9, 10) with at least one output disc (13) which can be connected to the at least one drivable coolable housing element (9, 10) in such a way as to be capable of transmitting torque by fluid friction, wherein at least one fluid can be admitted to at least one torque-transmitting space, and the mass flow of said fluid can be regulated by means of a valve element (30), wherein the valve element (30) can be actuated by at least one actuator (26, 27), and at least a section of the actuator (26, 27) is arranged in at least one retaining element (33) for fastening to a motor unit.

Abstract: An estimating method for transmitting torque of a dry type clutch in a vehicle, may include a slip determining step of determining by a processor whether only one clutch slips between an engine and a transmission, a transmitting torque estimating step of estimating a current transmitting torque of the dry type clutch by using a torque observer when the only one clutch slips as a result of performing the slip determining step, and an updating step of reflecting the current transmitting torque of the dry type clutch estimated in the transmitting torque estimating step and an actuator torque in the transmitting torque estimating step to a T-S (Torque-Stroke) curve.

Abstract: The present disclosure relates to a control circuit for a vehicle transmission cooling system having a controller configured to control an air compressor to selectively pressurize a transmission clutch housing and provide air to an alternative vehicle subsystem (or subsystems).

Abstract: A fan for a drive clutch includes a disk having several vanes that can attach to a drive clutch to direct air toward the clutch to cool the clutch and belt of a CVT transmission. The disk can be injection-molded or otherwise formed and can be bolted onto a clutch drive with the vanes facing toward the clutch drive. An inward-facing surface can be concave to direct air toward the clutch. The disk can attach to the clutch drive using preexisting bolts of the clutch drive.

Abstract: The invention relates to a friction clutch in a motor vehicle, comprising a clutch bell housing (210), at least one air inlet duct (130) arranged on the clutch bell housing for cooling the clutch bell housing, at least one air outlet duct (140) arranged on the clutch bell housing, and at least one temperature sensor (120). The invention further relates to a method for determining a clutch temperature of a friction clutch.

Abstract: A multiple disk clutch includes a clutch outer, a clutch inner, frictional disks, a cam mechanism, and a vibration isolating member. The clutch inner is provided inside the clutch outer and configured to transmit a rotational driving force from the clutch outer to a transmission shaft. The frictional disks are movable in an axial direction of the transmission shaft to thereby make and break transmission of the rotational driving force from the clutch outer to the clutch inner. The cam mechanism is provided inside the clutch outer and configured to apply a pressing force to the frictional disks according to the rotational driving force from the crankshaft. The cam mechanism is configured to relax the pressing force applied to the frictional disks when a load from the transmission shaft exceeds a predetermined value. The vibration isolating member is provided at the clutch inner.

Abstract: The disclosed apparatus relates to a liquid cooled brake apparatus comprising: a housing, a brake cooling pump mounted to said housing, a braking force actuator mounted to said housing, said actuator being driven by a first driven member; and a braking force applicator in operable communication with said braking force actuator and a brake rotor, the rotor rotationally fixed to said first or a second driven member. The disclosed method relates to a method of retarding a driven member comprising: driving a braking force actuator with a first driven member, actuating a braking force applicator; and retarding the rotation of a rotor rotationally fixed to said first or a second driven member.

Abstract: The present disclosure relates to a dry-clutch transmission having various cooling techniques. Some techniques include forming different structural features on transmission components so as to create an organized air flow. The disclosed techniques are applicable to both opened and closed transmission housings.

Abstract: The present disclosure relates to durability enhancement techniques for a dry-clutch vehicle transmission. A cooling system that provides a direct convective cooling path to friction surfaces is disclosed. Also disclosed is a continuously variable clutch wear compensation assembly configured to adjust the position of clutch assembly components on-demand or as needed.

Abstract: A centrifugal friction clutch providing for a separation between the pressure and/or fixed plates and the friction surfaces of the clutch discs to provide for reduced heat transfer to said pressure and fixed plates, reduced risk of deformation of said plates, and improved distribution of axial forces to maintain maximum frictional engagement. Said pressure plates and fixed plates further including air impeller vanes or similar structures on their interior surface to further improve heat dissipation and reduce the risk of deformation.

Abstract: A system for controlling temperature of a transmission clutch includes a housing containing the clutch, a fan for circulating air through the housing and over the clutch, and a controller configured to determine an inferred temperature at a reference surface on the clutch and to actuate the fan in response to the inferred temperature.

Abstract: An improvement of the clutch housing structure, comprising a housing that fits the clutch carrier of the clutch disk, where the housing is provided with a skirt portion that embraces the clutch carrier; and a washer in rigid wall, which is fixed onto the inner side of the skirt portion of the housing, where the washer and the clutch carrier press each other to form a obstruction that characterizes high coefficient of friction, which further drives the boss to move the wheels; the target is to improve the imperfections of the prior art which includes the deformation at high temperature, or the skid and incomplete transmission by lacking of enough friction.

Abstract: A centrifugal fan is mounted to an inner plate of a centrifugal clutch as a heat-generating rotating device, and an intake port of a casing is formed near a front side in the axial direction of the centrifugal fan. The centrifugal fan includes a base plate connected to the inner plate of the centrifugal clutch, plural fins formed on the base plate, blow-off holes each formed between arbitrary adjacent fins and extending axially through the base plate, and guide walls for guiding a radially outward air flow over the base plate into the blow-off holes. Air just after admitted from the intake port passes through the blow-off holes and is blown against the centrifugal clutch.

Abstract: The invention includes a mounting hat for a brake rotor having a lower section connected to an upper section. Also included is a plurality of aerodynamically shaped standoff vanes each having a leading edge, a trailing edge, a top and a bottom connected to the upper section. Further, a plurality of vents are formed between adjacent aerodynamically shaped standoff vanes. The vents are circumferentially distributed on the upper section. Air flow is induced to flow through the plurality of vents. Alternatively included is a mounting hat for a brake rotor having a lower section connected to an upper section. Also included is a plurality of first aerodynamically shaped standoff vanes each having a leading edge, a trailing edge, a top and a bottom connected to the upper section. Further, a plurality of second aerodynamically shaped standoff vanes each having a leading edge, a trailing edge and a top connected to the upper section is included.

Abstract: A drive power transmission control device is provided with an electromagnetic drive power transmission device and an ECU for controlling the application of electric current to an electromagnetic coil of the drive power transmission device. The ECU is bodily provided on a casing of the electromagnetic type drive power transmission device through at least one support member 50. The electronic control device is fixedly supported on an outer wall of the casing with a space between the electronic control device and the casing, such that cooling air can flow between the outer wall of the casing and the electronic control device.

Abstract: A dry multi-disc clutch includes a plurality of friction discs interposed between a drive-side clutch outer and a driven-side clutch center and power is transmitted from the clutch outer to the clutch center by pushing these friction discs using a pressure plate. Fins which enhance a flow of air are formed on the clutch outer and the pressure plate and, at the same time, passages which allow the communication of air are formed in the clutch outer and the pressure plate. With such a clutch structure it is possible to efficiently radiate the friction heat, which is generated when the clutch is connected, and the heat transmitted from the engine and, at the same time, it is possible to discharge the wear powder that is generated when the clutch is connected. As a result, it is possible to stabilize the clutch performance.

Abstract: The invention provides for cooling an endless belt in a continuously variable transmission (CVT). The CVT is comprised of a drive clutch, a driven clutch, and an endless belt disposed about the drive and driven clutches. Both the drive and driven clutches include an axially stationary sheave and an axially movable sheave. A central hub extends from an inner surface of at least one of the sheaves, and further includes at least one bore. The one bore defines an air path extending from an outer face of the hub through the one sheave to the outer face of the one sheave. At least one recessed channel is located on an inner surface of at least one of the sheaves. The one recessed channel defines an air path around a side of the endless belt in contact with the inner face of the one sheave. The invention will cool the belt as it rides about the drive clutch and driven clutches. In addition, the invention will provide at least one reduced-slip sheave surface for the belt in the CVT.

Abstract: The centrifugal clutch includes one or more clutch plates having a plurality of air impeller vanes to circulate air through the centrifugal clutch during its operation in order to extend the useful life of the clutch. A pressure plate includes a plurality of air impeller vanes formed by alternating raised impeller vane portions and impeller vane channels, with the weighted levers of the centrifugal clutch aligned with the raised portions of the air impeller vanes of the pressure plate. A fixed plate may also include a plurality of air impeller vanes formed on a side surface of the fixed plate by alternating raised impeller vane portions and impeller vane channels. A floating plate may also include a plurality of air impeller channels formed internally within the floating plate and having openings at the outer and inner edges of the floating plate.

Abstract: A magnet type fan clutch apparatus is formed of an electromagnetic clutch mounted on one driving shaft, and a magnet coupling operatively connected to the electromagnetic clutch. The magnetic coupling includes a permanent magnet rotary body to which a fan is fixed, and a disc having a conductor or a hysteresis member opposed to the permanent magnet rotary body with a narrow clearance left therebetween; and formed so that the permanent magnet rotary body and disc are rotated together or relatively owing to an attraction working between the permanent magnet and conductor. The magnetic coupling is formed so as to be ON/OFF controlled by the electromagnetic clutch, and a seal structure is provided between the disc and permanent magnet rotary body.

Abstract: A dry multi-disc clutch includes a plurality of friction discs interposed between a drive-side clutch outer and a driven-side clutch center and power is transmitted from the clutch outer to the clutch center by pushing these friction discs using a pressure plate. Fins which enhance a flow of air are formed on the clutch outer and the pressure plate and, at the same time, passages which allow the communication of air are formed in the clutch outer and the pressure plate. With such a clutch structure it is possible to efficiently radiate the friction heat, which is generated when the clutch is connected, and the heat transmitted from the engine and, at the same time, it is possible to discharge the wear powder that is generated when the clutch is connected. As a result, it is possible to stabilize the clutch performance.

Abstract: The centrifugal clutch includes one or more clutch plates having a plurality of air impeller vanes to circulate air through the centrifugal clutch during its operation in order to extend the useful life of the clutch. A pressure plate includes a plurality of air impeller vanes formed by alternating raised impeller vane portions and impeller vane channels, with the weighted levers of the centrifugal clutch aligned with the raised portions of the air impeller vanes of the pressure plate. A fixed plate may also include a plurality of air impeller vanes formed on a side surface of the fixed plate by alternating raised impeller vane portions and impeller vane channels. A floating plate may also include a plurality of air impeller channels formed internally within the floating plate and having openings at the outer and inner edges of the floating plate.

Abstract: A magnet type fan clutch apparatus is formed of an electromagnetic clutch mounted on one driving shaft, and a magnet coupling operatively connected to the electromagnetic clutch. The magnetic coupling includes a permanent magnet rotary body to which a fan is fixed, and a disc having a conductor or a hysteresis member opposed to the permanent magnet rotary body with a narrow clearance left therebetween; and formed so that the permanent magnet rotary body and disc are rotated together or relatively owing to an attraction working between the permanent magnet and conductor. The magnetic coupling is formed so as to be ON/OFF controlled by the electromagnetic clutch, and a seal structure is provided between the disc and permanent magnet rotary body.

Abstract: The invention relates to a brake disk comprising two friction rings which are connected via links and between which an air channel is configured, as well as support elements which are molded to the inner peripheral area of the brake disk and designed for engaging cams of a hub of an axle of a (utility) vehicle. In the inner peripheral area of the brake disk, the support elements bridge the air channel in the manner of links and axially protrude into the area of the friction rings to such an extent that the outer surfaces of the friction rings are situated at an axial distance from the outer surfaces of the support elements even in the maximum permissible state of wear. Openings in the axle hub and the brake disk ensure sufficient cooling.

Abstract: A motor vehicle clutch has at least one flywheel (4a) equipped with fan blades (34) at least in a zone that is radially between a hub (54) and a solid ring portion with a friction surface (48). The clutch is configured so that the fan blades of the rotating flywheel will generate an air stream to flow over the surface portion of the flywheel on the opposite side from the friction surface for efficient cooling of the clutch.

Abstract: A magnet type fan clutch apparatus is formed of an electromagnetic clutch mounted on one driving shaft, and a magnet coupling operatively connected to the electromagnetic clutch. The magnetic coupling includes a permanent magnet rotary body to which a fan is fixed, and a disc having a conductor or a hysteresis member opposed to the permanent magnet rotary body with a narrow clearance left therebetween; and formed so that the permanent magnet rotary body and disc are rotated together or relatively owing to an attraction working between the permanent magnet and conductor. The magnetic coupling is formed so as to be ON/OFF controlled by the electromagnetic clutch, and a seal structure is provided between the disc and permanent magnet rotary body.

Abstract: A motor vehicle clutch has at least one flywheel 4a equipped with fan blades 34 at least in a zone that is radially between a hub 54 and a solid ring portion with a friction surface 52. The clutch is configured so that the fan blades of the rotating flywheel will generate an air stream to flow over the surface portion of the flywheel on the opposite side from the friction surface for efficient cooling of the clutch.

Abstract: In an electromagnetic clutch having a rotating component, groove portions (21a, 21b) are made on a surface of the rotating component to induce air flow during rotation of the rotating component. The air flow enhances radiation of heat from the electromagnetic clutch. It is preferable that the groove portion is formed at each of axial ends of a driving rotor or pulley (12) included as the rotating component in the electromagnetic clutch.