Abstract: An assembly is provided for a turbine engine. This turbine engine assembly includes a turbine engine shaft, a gearbox and a coupler. The turbine engine shaft is configured to rotate about a rotational axis. The gearbox includes a gear configured to rotate about the rotational axis. The coupler is coupled to the turbine engine shaft by a coupler-shaft connection. The coupler-shaft connection is configured as or otherwise includes a crowned spline connection. The coupler is coupled to the gear by a coupler-gear connection. The coupler-gear connection is configured as or otherwise includes a crowned spline connection.

Abstract: Methods and systems for a vehicle transmission are provided herein. The vehicle transmission includes an input interface configured to mechanically couple to a motive power source. The vehicle transmission further includes a first disconnect device releasably mechanically coupling a first output to a first drive axle and a second disconnect device releasably mechanically coupling a second output to a second drive axle.

Abstract: Reaction plates and clutch assemblies including the reaction plates are disclosed. The clutch assembly may include at least one rotatable clutch plate, a reaction plate arranged to rotate with and apply a force to the clutch plate(s), and a piston. At least one bearing rolling element may be arranged between the reaction plate and the piston to permit relative rotational motion therebetween. A bearing cage may be retained by the reaction plate or the piston. A spring may be configured to urge the reaction plate away from the clutch plate(s). The reaction plate may include a retention tab configured to retain the spring in an axial direction. The retention tab may be formed on an axial portion of the reaction plate that extends in the axial direction. The axial portion may be disposed between two radial portions of the reaction plate that extend in a radial direction.

Abstract: A driving force transmitting apparatus includes a rotating shaft, a frictional engagement device, a piston member, a piston housing, a piston chamber, an oil pressure sensor, an attachment hole, an operating-oil receiving chamber, a bubble removing chamber, and a bubble discharging groove. The rotating shaft has an axial direction and is rotatable around the axial direction. The frictional engagement device includes a frictional engagement unit which is disposed around the rotating shaft and which includes first and second friction members that are alternately stacked in the axial direction. The piston member is movable in the axial direction to press the frictional engagement unit so that the first and second friction members are engaged with each other. The piston housing contains the piston member. The piston chamber is defined between an inner surface of the piston housing and the piston member.

Abstract: A novel adjustable slave cylinder is disclosed. The improved slave cylinder is particularly well suited for use with a clutch incorporating an expanding friction disk. The adjustable slave cylinder provides a means for adjusting a clutch pressure plate's position via an adjustment mechanism external to the inside of an engine.

Abstract: Hydraulic fan drive system with sensor feed-back. A sensor positioned in the central shaft of the fan drive assembly provides speed feedback signals and eliminates the need for routing the sensor wires.

Abstract: A dual clutch for coupling an engine-side input shaft with a first transmission-side and/or a second transmission-side output shaft. A first clutch has a first pressure plate, which is axially mobile relative to a first counter plate, for coupling with a first clutch disk connected to the first output shaft. A second clutch has a second pressure plate, which is axially mobile relative to a second counter plate, for coupling with a clutch disk connected to the second output shaft. A clutch cover is connected to the first and second counter plates. An actuator displaces the first and/or the second pressure plate. The actuator is radially supported on the input side on the input shaft by the clutch cover and a torsional vibration damper, which is connected to the clutch cover and is radially mounted on the output side on one of the output shafts and/or on a transmission housing.

Abstract: In a dry clutch, the space between dry-clutch plates and a bearing, which bearing is interposed between a first piston and a second piston, is blocked off. Also provided is a structure for supplying the bearing with lubricating oil, and thus it is possible to provide the dry clutch, without causing upsizing the bearing.

Abstract: A dual clutch which has two friction clutches, a central pressure-exerting plate and two pressure plates which are axially movable relative to the pressure-exerting plate with the interposition of the friction linings of two clutch disks, which each mesh with one gearbox input shaft, of actuating devices. The dual clutch is held at the drive-input side, with the dual clutch being supported at the gearbox side by an actuating system, which holds the two actuating devices, for actuating the pressure plates, and with the actuating system being rotatably held on the clutch housing.

Abstract: A dual clutch which has two friction clutches, which have a central pressure-exerting plate and two pressure plates which are axially movable relative to the pressure-exerting plate with the interposition of the friction linings of two clutch disks, which each mesh with a gearbox input shaft of actuating devices. The pressure plates are acted on by transmission elements by the actuating devices directly without a lever action. Furthermore, for the cooling and lubrication of the actuating bearings between the actuating devices and the transmission elements, an annular chamber can be formed which has an increased fluid volume.

Abstract: The invention relates to a device and to a method for controlling a coupling system having a coupling provided with a hydraulic actuation system, which includes an adjustable coupling part for connecting and separating a power transmission path between a coupling input side and a coupling output side, a hydraulic connection that connects the actuation unit to an electrohydraulic actuator that is arranged outside the coupling, and a control unit for controlling the actuator. The hydraulic connection forms a hydraulic system together with hydraulic components of the actuation unit and the actuator. According to the invention, a mechanical stop that delimits the adjustment of the coupling part on the actuation unit is formed. A pressure sensor monitors the pressure in the hydraulic system or a control signal of the actuator.

Abstract: A drive force transmitting apparatus comprises a dry clutch, a hydraulic cylinder, a piston arm, an elastic partitioning member, a first seal member and a leakage lubricating fluid recovery path. The elastic partitioning member prevents lubricating fluid that has leaked from a sliding portion of a piston of the hydraulic cylinder from flowing into the dry clutch. The first seal member is disposed between opposing surfaces of a cylinder housing and a clutch cover at a position downstream from the elastic partitioning member in a leakage flow direction of lubricating fluid that has leaked. The leakage lubricating fluid recovery path is at least partially formed by a gap between the cylinder housing and the clutch cover, such that lubricating fluid leaking past the piston is conveyed to an inside of the transmission while maintaining a sealed state established by the elastic partitioning member and the first seal member.

Abstract: A separable clutch for a motor vehicle has a clutch plate including a moveably mounted release unit. The clutch is pressure-medium actuated and includes an actuating piston acting on the release unit to engage and disengage the clutch, and a pressure chamber which is delimited at one side by at least one part of the actuating piston and at the other side by at least one part of a clamping piston. At least the actuating piston, the pressure chamber and the clamping piston are resiliently supported in a defined position against the release unit by spring force. The spring force is smaller than a limit force required for actuating the release unit. A pressure change in the pressure chamber, brought about by a clutch actuation causes the clamping piston to actuate a clamping device such that the clamping piston is fixed before the actuating piston actuates the release unit.

Abstract: In a friction coupling device, a restriction mechanism is further provided for restricting relative movement between a cylinder member and a drum member. The restriction mechanism is located on the cylinder-chamber side than friction plates in a pressing direction of a piston, and thus the friction coupling device can realize stable coupling operations without increasing the thickness of an outer wall or the like.

Abstract: A brake structure for a main shaft of a direct drive torque motor comprises a body, a direct drive torque motor, a main shaft and a brake assembly. The main shaft is provided for fixing the torque motor and the body, and the brake assembly is mounted between the body and the main shaft. An annular brake oil room of the brake assembly is positioned against the main shaft, and the brake seat subassembly has a thinner brake deformation wall formed between the annular brake oil room and the main shaft. The annular brake oil room utilizes its high pressure caused deformation to the brake deformation wall, thus achieving a braking effect by pressing the main shaft. Thereby, the present invention is easy to assemble, and not only can stop the main shaft quickly, but also has a greater locking force.

Abstract: A clutch-manipulation assist mechanism of a vehicle clutch mechanism is capable of disconnecting power of an engine and is provided to a power transmission path which transmits the power of the engine to a rear wheel. The clutch-manipulation assist mechanism includes a push rod member which is arranged near the clutch mechanism and which is movable in the axial direction interlockingly with a power cutoff of the clutch mechanism due to the manipulation of a clutch lever by a rider. An axial movement of the push rod member is assisted by an actuator in response to a detection of the clutch lever manipulation by the rider using a stroke sensor, thus reducing a manipulation force of the clutch lever. A detection lug of the stroke sensor detects a movement quantity of a shaft end of the push rod member.

Abstract: A clutch actuator structure provided for an internal combustion engine and a hydraulic clutch mechanism for transmitting a rotational driving force of a crankshaft of said engine includes a clutch actuator for controlling an oil pressure for engaging and disengaging the hydraulic clutch mechanism. The clutch actuator structure ensures that noises generated at the times of operation of the clutch actuator for actuating a hydraulic clutch are prevented from being transmitted to the exterior. The clutch actuator structure includes an oil sump part for reserving oil provided in the periphery of a clutch actuator. The clutch actuator is disposed in the oil sump part.

Abstract: A wheel disconnect system is provided including a rear drive module and a constant velocity joint housing. The rear drive module includes a housing, at least one actuator, and at least one dog clutch. The dog clutch includes a first portion configured to move when the actuator is moved and a second portion configured for engagement with the first portion. The constant velocity joint housing is formed integrally with the second portion of the dog clutch. A wheel may be disconnected from the rear drive module unless engagement of the first and second portions of the dog clutch allows torque to be transferred to the wheel. In one embodiment, a hydraulically activated piston may be used to activate the first portion of the dog clutch. In another embodiment, a ball ramp may be used to activate the first portion of the dog clutch. A vehicle driveline including a wheel disconnect system is also provided.