Abstract: The present invention shows a telescopic rail having at least one inner, middle, and outer rail element, wherein the inner and outer rail elements are each longitudinally displaceably supported at the middle rail element over rolling members that are guided in a rolling member cage. Provision is made in accordance with a first aspect that the rail elements are mechanically force-coupled via a rail synchronization arrangement such that on a longitudinal displacement of the outer rail element with respect to the inner rail element, the middle rail element is longitudinally displaced with respect to both the inner rail element and the outer rail element.

Abstract: A bearing assembly including a body defining an outer surface, an inner surface, and an aft surface is generally provided. A first inlet opening is defined through the outer surface in fluid communication with a first internal passage defined by a first internal wall. The first internal passage is in fluid communication with a first outlet opening defined through the inner surface. A second inlet opening is defined through the inner surface in fluid communication with a second internal passage defined by a second internal wall. The second internal passage is in fluid communication with a second outlet opening defined through the aft surface.

Abstract: A wind turbine includes a rotor shaft. The rotor shaft is mounted via a bearing assembly having a first bearing ring and a second bearing ring mounted to rotate in relation to the first bearing ring. A hydrostatically supported first friction bearing segment is disposed on the first bearing ring and interacts with a first friction face that is disposed on the second bearing ring. The first friction bearing segment is received in a receptacle pocket of the first bearing ring such that a first compression chamber is formed between the first bearing ring and the first friction bearing segment. The first friction bearing segment is configured such that a second compression chamber is formed between the first friction bearing segment and the second bearing ring, wherein the first compression chamber and the second compression chamber are connected by a duct that runs through the first friction bearing segment.

Abstract: A bearing (20; 150; 152) comprises: an inner race (26); an outer race (28); and a plurality of rolling elements (30). The inner race comprises a nitrogen-alloyed steel (40). The outer race comprises a steel (42) with lower nitrogen content than said nitrogen-alloyed steel.

Abstract: One aspect relates to a rolling element for a ball bearing wherein the rolling element has: (i) a Young modulus E in the range up to and including 100 GPa; and (ii) a yield strength Rp0.2 in the range up to and including 1800 MPa, or wherein the rolling element has at least an alloy of nickel (Ni) and titanium (Ti), wherein the weight ratio of Ni:Ti in the alloy is in the range of from 57:43 to 50:50. One aspect is a rolling bearing with: a. at least an outer ring; b. at least an inner ring, wherein a raceway is defined by the arrangement of the outer ring and the inner ring; and c. at least three rolling elements wherein the rolling elements are arranged in the raceway, wherein at least one rolling element comprises at least an alloy as mentioned above.

Abstract: A bearing ring for a rolling-element bearing or plain bearing has at least one first region that is inductively hardened or is configured to be inductively hardened and at least one second region that is not inductively hardened and is not intended to be inductively hardened, and the at least one second region includes at least one stress-relief recess and/or at least one stress-relief projection.

Abstract: A radial roller bearing cage made of metal includes annular rim portions; and a retaining portion including cage bars. Each of the cage bars includes a body portion connecting the rim portions to each other, and projected portions. On an outer peripheral side of the retaining portion, at least a portion of an outer surface of the body portion is a curved surface having the same diameter as a diameter of an outer peripheral surface of each of the rim portions. In an outer surface of each of the projected portions on the outer peripheral side of the retaining portion, at least a portion on a distal end side in a projected direction is located radially inward of the outer peripheral surface of each of the rim portions.

Abstract: According to the present invention, a low surface-roughness part (114a) is formed at a first tapered part (114), and, as a result, the roughness of an opening-edge of a groove part (113a) of an internal spline part (113) that opens at the first tapered part (114) is reduced, and surface pressure applied by the opening edge to a tooth (123b) of an external spline part (123) can be reduced. As a result, the opening edge of the groove part (113a) of the internal spline part (113) can be kept from digging into the tooth (123b), and variation, between products, in the insertion load of a second shaft part (12) can be suppressed.

Abstract: An isolator decoupler comprising a shaft, a pulley journalled to the shaft, a one-way clutch engaged with the shaft, a spring carrier engaged with the one-way clutch, the spring carrier having a spring carrier surface, a torsion spring having a first end laser welded to the pulley and a second end laser welded to the spring carrier, the torsion spring having a volute with a width w, an annular spring support member having a spring support member outside surface, the annular spring support member independently moveable from the spring carrier and independently moveable from the shaft, a gap g between the annular spring support member and the spring carrier, the gap g being less than the width w, the first end comprising a first end coil, the first end coil bearing upon the spring support member outside surface, the first end coil laser welded to the spring support member outside surface, a torsion spring radial contraction limited by engagement with the spring carrier surface, and the gap g and the width w hav

Abstract: A hydraulic transformer clutch employs radial hydraulic piston assemblies with integrated electrohydraulic actuation. The hydraulic transformer clutch includes: an output shaft, an output disc affixed to the output shaft for rotation therewith, an input shaft, a rotatable housing affixed to one of the input shaft or the output shaft for rotation therewith, a plurality of hydraulic cylinders, and a plurality of working pistons. The hydraulic cylinders are operatively connected to the rotatable housing, and are spaced about the rotatable housing. Each working piston is slidably mounted within a corresponding hydraulic cylinder of the plurality of hydraulic cylinders, and is positioned to be selectively pushed, when actuated, to create a rigid connection between the input shaft and the output shaft. One or more actuator pistons are pushed by an electromagnet and create pressure that is distributed on working piston surfaces and generates active torque.

Abstract: A hydrodynamic coupling contains a pump wheel and a turbine wheel, which are rotatably mounted about a common axis of rotation. The pump wheel and the turbine wheel each carry a circumferential channel about the axis of rotation, so that the channels axially facing one another limit a toroidal working space that can be filled with a fluid. The pump wheel and the turbine wheel each have radial blades which subdivide the channels into blade chambers. Here, the turbine wheel has a first blade chamber and a second blade chamber, wherein contours of the channel in the radial direction are distinct in the two blade chambers.

Abstract: A clutch includes an inner race, an outer race defining an inner cam surface having lobes and valleys, and a plurality of wedge segments configured to selectively couple the inner and outer races. The wedge segments are circumferentially arranged around the inner race with each segment disposed between adjacent ones of the lobes and valleys. Each segment is circumferentially movable towards the adjacent lobe to increase friction with the inner race and towards the adjacent valley to decrease friction with the inner race. A cage is configured to drive the circumferential movement of the wedge segments. Rotation of the cage relative to the outer race in a first direction permits overrunning of the inner race in a second direction that is opposite the first direction while a second set of the segments locks the inner race from rotating in the first direction relative to the outer race.

Abstract: A ratchet device for providing anti-reverse locking for a grounded slack comprises a pinwheel having flexible angled spokes circumferentially protruding therefrom and a pinion ring into which the pinwheel fits includes a plurality of angled teeth with which the angled spokes mate. The spokes flex and slide over the pinion ring teeth when the ratchet is advanced in a forward direction, and lock against the teeth when the ratchet is not being advanced.

Abstract: A torque tube for a brake assembly may include a tube portion having a first centerline axis, a conical back-leg portion extending from the tube portion in a radially outward angled orientation relative to the first centerline axis, and a lip portion disposed at a radially outward end of the conical back-leg portion. The lip portion may have added structural material to improve the structural properties of the torque tube to prevent or mitigate damage that would otherwise be caused by friction-induced vibrations.

Abstract: A brake assembly comprises: a brake pad carrier supporting a brake pad which is movable relative to a brake rotor, the brake pad carrier comprising a protrusion, wherein a top surface of the protrusion has at least one notch comprising a first side surface and a second side surface facing each other; and a brake pad clip comprising at least one protruding part disposed within the notch formed in the top surface of the protrusion of the brake pad carrier, wherein the first side surface and the second side surface of the notch formed in the top surface of the protrusion of the brake pad carrier form an inner shape of the notch limiting movement of the protruding part of the brake pad clip in directions toward and away from the brake rotor.

Abstract: A connection device for connecting a brake disk to a wheel hub, wherein the connection device is arrangeable at least in part in a recess of the wheel hub and is transferable into a fixed state in which the connection device interacts in a non-positive locking manner with the recess.

Abstract: A bushing assembly is provided for a spring brake actuator of a vehicle air braking system. The bushing assembly comprises a single-piece bushing member made of a material that is homogenous throughout the bushing member. The bushing member includes a first rib structure that faces one axial direction of the bushing member and a second rib structure that faces an opposite axial direction of the bushing member.

Abstract: A method for modifying a brake application of a combination vehicle comprises receiving a temperature signal of a first brake pad of a first brake assembly and receiving a temperature signal representative of a temperature of a second brake pad of a second brake assembly. The temperatures are compared to a first predetermined temperature. The method will determine if service brakes of the trailer are being applied by a driver and compare a wheel speed of the trailer with the wheel speed of a tractor of the combination vehicle. The method will determine a brake drag exists on the trailer in response to both the first and the second brake pad temperature being greater than the first predetermined temperature, the trailer wheel speed being less than the tractor wheel speed and the service brakes not being applied by the driver.

Abstract: Elastic joint comprising:—an inner ring (1) provided with an axial opening (11) for being mounted on a shaft “E” and with an outer surface having: two opposite intermediate sections (13) having a decreasing cross-section towards opposite ends of said inner ring (1) and forming supporting zones for the metal wire cushions (3), and two end sections (14) having a smaller cross-section than the central section;—an outer ring (2) provided with an outer cylindrical surface (21) for mounting the ring to on a support (S) and with an inner surface with two intermediate portions (22) having a decreasing cross-section towards opposite ends of the outer ring (2), facing the intermediate sections (13) of the inner ring (2); and—metal wire cushions (3) arranged between the inner ring and the outer ring (2).

Abstract: A flexible energy absorbing system comprising a material coated, impregnated and/or combined with a strain rate sensitive substance is disclosed. It is formed so as to define repeating adjacent cells, each cell having a re-entrant geometry such that, upon impact, the material locally densifies at the impact site.

Abstract: An air spring includes a composite bumper, a composite piston, a flexible bellow and an upper end cap member. The composite piston has a first end which includes a plurality of rigid portions and a plurality of adjacently positioned cantilever snap joints for receiving and securing the composite bumper. The composite bumper includes an inner wall having a surface shape for securely engaging the plurality of rigid portions and the plurality of cantilever snap joints. The first end of the composite piston further includes a piston housing surface upon which an outer surface of the composite bumper nests against. The flexible bellow is sealingly attached to the composite piston and the upper end cap member. The flexible bellow, the upper end cap member, and the composite piston together form a fluid tight chamber, and the composite bumper is contained within the fluid tight chamber.

Abstract: A vibration damper may be used in connection with a motor vehicle. The vibration damper may include a hydraulic device for damping vibrations. The vibration damper may also include at least one shut-off valve connected fluidically to the hydraulic device at the vibration damper. The shut-off valve may be capable of being connected fluidically to at least one of a pump or a filling apparatus for filling the vibration damper with hydraulic fluid. The shut-off valve may comprise a valve housing with a first connector for the pump, a second connector for the filling apparatus, and a third connector for the hydraulic device.

Abstract: A hydromount that is suitable for mounting a motor vehicle engine at a vehicle body includes a supporting spring supporting a mount core and surrounding a working chamber, and a compensating chamber separated from the working chamber by a separating assembly and delimited by a compensating diaphragm. The separating assembly may have at least two nozzle systems which have one decoupling diaphragm each and in each of which one damping duct is disposed. The compensating chamber and the working chamber may be filled with a liquid and may be connected to each other in a liquid-conducting manner by damping ducts. The separating assembly may have an absorber duct connecting the working chamber with the compensating chamber. A switchable actuating member may be assigned to the absorber duct.

Abstract: A self-swinging device contains: a base, a support rack, two connection racks, two magnetic tools, and two insulation members. Each magnetic tool includes a case having a receiving orifice, two separation elements, two fixing points, a magnet, and two notches. Each rotary disk includes an arcuate trench proximate to a fixer, a locking projection, a drive gear, a recess, and a resilient element. A sector gear meshes with the drive gear and includes two posts. An isolative swing rod includes two metal elements, a first central shaft, two first pull columns, two first slots, a second central shaft, a second pull column, two springs, two second slots, and two third central shafts. The case includes and a retainer and the fixer which has a limitation pillar extending downward therefrom so as to retain with the arcuate trench of each rotary disk.

Abstract: Methods and systems are provided for a variable inertia flywheel. In one example, a method adjusting mass bodies of two or more inertia plates of the variable inertia flywheel to generate a plurality of moments of inertia.

Abstract: The present invention discloses a strap for securing a payload. The strap includes a first fastener and an elastic strap section connected to the first fastener at one end of the elastic strap section. The strap also includes an inelastic strap section connected to the elastic strap section at an opposite end of the elastic strap section as the first fastener. The strap further includes a second fastener configured along the inelastic strap section to secure the inelastic strap section to the inelastic strap section.

Abstract: A tensioning device includes a circular spring, and a pulley rotatably connected to the circular spring. The pulley includes a circumferential groove, which has a V-shaped cross-section defined by two lateral converging walls. The pulley also includes a flexible rope having a variable cross section, extending between a first end connected to the pulley and a second end intended to be connected to the cable. The pulley is rotatably movable around an axis, between a first position in which the flexible rope is arranged in the circumferential groove around the axis, and a second position in which the flexible rope is unwound.

Abstract: A cord coupling system is provided. The cord coupling system includes a housing with a first half, a second half, a top surface, an opposed bottom surface, a front surface, and a rear surface. The housing includes a set of channels. The set of channels have a pair of rotatable jaws partially disposed therein and a pair of gates are adjacent to the pair of rotatable jaws. The pair of rotatable jaws and the pair of gates rotate between a first position and a second position.

Abstract: An electric drive axle including a first gear and an idler shaft having a second gear and a third gear disposed thereon, wherein the second gear cooperates with the first gear. A clutch assembly selectively couples a planetary gear system to one of the second gear and the third gear, wherein the planetary gear system is configured to produce a predetermined gear ratio between the second gear and the third gear.

Abstract: A transmission (G) for a motor vehicle which has a transmission input (GW1-A), a transmission output (GW2-A), five planetary gear sets (P1, P2, P3, P4, P5) and six shifting elements (B1, B2, K1, K2, K3, B3). By selectively actuating the six shifting elements (B1, B2, K1, K2, K3, B3), ten forward gears and one reverse gear can be selected between the transmission input (GW1-A) and the transmission output (GW2-A). Further, the drive train is typically incorporated into a motor vehicle.

Abstract: A clip lock for securing an expandable clip of a chain tensioner includes an elongated member having a first surface configured to engage an exterior surface of the chain tensioner and a second surface, spaced apart from the first surface, that is configured to engage the expandable clip and maintain the expandable clip in contact with an annular groove of a chain tensioner component preventing radially-outward expansion and axial movement of the expandable clip with respect to the chain tensioner component while the first surface engages that exterior surface of the hydraulic tensioner and the second surface engages the expandable clip.

Abstract: A base and movable platform are connected by a linearly extendable member, so that a motor may be adjustably located at a desired distance from other machinery which receives power. A motor mounted on such a movable platform may be linearly displaced so that belts, chain, or silent chain or the like may be adjusted to operate at a desired tension. In another embodiment, a motor driving a gear train may be adjusted so that the depth of engagement of meshed teeth and the allowable backlash between a driving gear on the motor and a driven gear may be adjusted and controlled. An automatic belt tension control system may be constructed by adding a tension sensor and a control module configured to maintain operating tensions within a preferred range and optionally to emit alarms or command a shutdown if an unsafe condition is detected.

Abstract: The invention relates to a spindle drive, comprising a drive unit, a spindle, and a spindle nut in threaded engagement with the spindle, the spindle nut being driven by the drive unit by means of a drive element and wherein the spindle nut is mounted on the drive element in such a way that the spindle nut and the spindle in threaded engagement with it are pivotable relative to the drive element.

Abstract: A slide block assembly mounted on a thread rod having a slide block and an entraining element. The slide block is coupled up by two slide units with an inner bore of spiral surface for screwing connection. The entraining element is deployed outside of the slide block for restraining the slide units in help of solving the problem as block seizing by slightly enhancing torque onto the block, so as to create a block gap leading an automatic consequence of slide block's restoration from deviation resulted from an inappropriate screw between the thread rod and the thread bore.

Abstract: A gearbox for vehicles that includes a split gearbox, a main gearbox and a range gearbox, which is shiftable into a low range gear position and a high range gear position. The range gearbox includes a planetary gear with a ring gear wheel, a sun gear wheel and a planet carrier, on which at least one planet gear wheel is rotatably mounted. A gearbox housing surrounds the planetary gear. A first axially movable coupling sleeve engages the planet carrier with the gearbox housing. A second axially movable coupling sleeve engages the ring gear wheel with an output shaft to shift into a reverse gear. A crawler gear in the main gearbox is arranged to transfer torque through the gearbox when the range gearbox is shifted into the reverse gear.

Abstract: A torque converter for a hybrid module may include a hydraulic coupling arrangement, a front cover, an impeller shell, and an electric rotor. The hydraulic coupling arrangement may include an impeller and a turbine. The front cover may have a first rim extending in a first axial direction. The front cover may at least partially encase the hydraulic coupling arrangement. The impeller shell may be fixed to the front cover and may at least partially encase the hydraulic coupling arrangement. The impeller shell may have a second rim extending in a second axial direction, opposite the first axial direction, a circumferential ring at a distal end of the second rim, and at least one impeller blade. The electric rotor may be fixed to the impeller shell second rim and axially retained by the circumferential ring.

Abstract: A torque converter having a hydraulically-actuated stator clutch therein is provided. In particular, the torque converter includes a stator, and a hub axially aligned with at least a portion of the stator and located radially inward of at least a portion of the stator. The hydraulically-actuated stator clutch is disposed within the stator and is configured to selectively couple the stator to the hub. The hub defines a dedicated fluid passageway extending therethrough to fluidly couple a transmission fluid source to the hydraulically-actuated clutch. Slipping of the clutch is therefore controlled via hydraulic fluid. This allows for modification of characteristics of the torque converter that are not otherwise possible with standard one-way clutches in torque converter stators.

Abstract: A hybrid module includes a housing, an electric motor, a hydraulic coupling, a first clutch, a second clutch, and a flow plate assembly. The housing is arranged for fixing to a planetary transmission and an engine. The electric motor is disposed in the housing. The electric motor has a stator fixed to the housing and a rotor rotatable relative to the housing. The hydraulic coupling is disposed in the housing and is at least partially radially inside of the electric motor. The first clutch is for drivingly connecting the rotor to the engine. The second clutch is arranged in parallel with the hydraulic coupling for drivingly connecting the rotor to an input shaft of the planetary transmission. The flow plate assembly is fixed to the housing. The flow plate assembly has a first flow plate with a first radial groove forming a first portion of a first radial flow channel, and a second flow plate, fixed to the first flow plate, forming a second portion of the first radial flow channel.

Abstract: A differential device includes a plurality of differential gears, a plurality of differential gear support members respectively supporting the plurality of differential gears, a pair of output gears meshing with each of the plurality of differential gears, a support member having a plurality of opposite ends-supporting parts supporting opposite end parts of the respective differential gear support member, and a space being formed in a middle part of the support member, a recess part being formed between two of the opposite ends-supporting parts of the support member that are adjacent to each other, the recess part extending from an outside in a radial direction of the support member toward an inside in the radial direction, each of the plurality of opposite ends-supporting parts having one support portion supporting at least one end part of the differential gear support member, and a through hole being formed in the one support portion.

Abstract: A wave generator of a wave gear device flexes an externally toothed gear into a shape along an elliptical closed curve to form engaging portions of the externally toothed gear with an internally toothed gear at two places, namely at both ends of the major axis, and to move the engaging portions in the circumferential direction. The elliptical closed curve has a non-point symmetric shape. For example, the elliptical closed curve is a line symmetric closed curve that is not symmetric about the minor axis, and is symmetric about only the major axis. In the non-point symmetric state, the engaging portions are formed at both ends in the major axis direction. By selecting different shapes for the engaging portions at the two locations of the major axis, vibration attributed to a secondary angular transmission error component generated along with the rotation of the wave generator can be reduced.

Abstract: A bicycle sprocket comprises a sprocket body, a plurality of sprocket teeth, a mounting member, at least one fastening member, and a cover member. The sprocket body has at least one first threaded portion. The mounting member has at least one fastening hole configured to be aligned with the at least one first threaded portion in the assembled state. The at least one fastening member has a fastening shaft portion, a fastening head portion, and a second threaded portion. The second threaded portion is configured to threadedly engage with the at least one first threaded portion of the sprocket body in the assembled state. The cover member is configured to at least cover the fastening shaft portion of the at least one fastening member when viewed from an axial direction with respect to the rotational center axis in the assembled state.

Abstract: A gear for use in a transmission system. The gear comprises an outer annular element having gear teeth on a radially outer surface thereof and an inner support element arranged coaxially with the outer annular element. The gear further comprises first and second opposing side walls, each side wall extending from the outer annular element to the inner support element to form an annular space. At least one of the first and second side walls extends from the outer annular element at an angle greater than 0 degrees with respect to a direction perpendicular to the rotational axis of the gear.

Abstract: A multiple contact-point flexible bearing applicable to harmonic drive has three contact-point flexible ball bearing, four contact-point flexible ball bearing and line contact flexible roller bearing. Single rolling element has two or two more contact points with the outer ring raceway, i.e. outer ring—flexspline interference fit component. Deformation accuracy of outer ring—flexspline interference fit component and teeth meshing accuracy of flexible and rigid wheels are improved so unnecessary additional deformation is reduced and even avoided. Contact stress between rolling element and raceway is reduced. Slip of rolling element is controlled. Quality and technical advantages such as bearing assembly conditions and lubrication conditions in operation are enhanced. Eventually, operating accuracy and service life of the flexible bearing, flexspline even the whole harmonic drive are improved, which means a lot in practical engineering.

Abstract: Aspects of the disclosure are directed to a system comprising: a tank that stores a fluid, and a conduit that includes a first end and a second end, where the conduit is configured to convey at least a portion of the fluid stored in the tank from the second end of the conduit to the first end of the conduit, where a first end region of the conduit coinciding with the second end of the conduit has a first end region density and the fluid has a fluid density, where the first end region density is greater than or equal to the fluid density such that the first end region of the conduit remains immersed in the fluid stored in the tank when the fluid in the tank is under negative gravity conditions.

Abstract: A vehicle axle includes, an axle gear unit housing and axle tubes adjoining the latter. The axle gear unit housing has an opening which is surrounded by a flange. Threaded blind bore holes extend beyond the thickness of the flange into the region of the wall of the axle gear unit housing which has radially outwardly on the side of the flange facing the axle gear unit housing a wall thickening which extends annularly radially circumferentially along the flange and which is configured in a continuously annular manner or so as to form spot faces partially in the areas of the threaded blind bore holes, wherein a joint flash extends in a central plane along the axle tubes and toward the flange 4 in the region of the axle gear unit housing and at the flange along the radially outer contour of the wall thickening.

Abstract: A transmission includes an input shaft that couples to a prime mover, twin countershafts and a main shaft having gears coupled thereon, an output shaft that selectively provides a torque output to a driveline, a first shift actuator that selectively couples the input shaft to the main shaft. The transmission includes a second shift actuator that couples the main shaft to the output shaft with a selected reduction ratio, and a controller including a vehicle state circuit that interprets at least one vehicle operating condition, and a neutral enforcement circuit that provides a first neutral command to the first shift actuator and a second neutral command to the second shift actuator, in response to the at least one vehicle operating condition indicating that vehicle motion is not intended.

Abstract: A method of determining clutch torque for a limited slip differential gear mechanism on a vehicle includes obtaining an estimated driveline torque. A desired bias torque is established. A necessary clutch torque required to achieve the desired bias torque is determined. The necessary clutch torque is commanded based on the estimated driveline torque to achieve the desired bias torque.

Abstract: A controller includes: an automatic shifting control section that carries out automatic shifting control in which a shifting actuator is driven in response to a predetermined automatic shifting command; and an assist control section that, when a predetermined assist condition is met, carries out assist control in which the shifting actuator is driven to assist motion of a manual shifting power transmission mechanism actuated upon operation of a shifting operation member by a driver.

Abstract: A method for operating a drive train having a power generator, a mechanical power transmission device, and a power receiver wherein the power transmission device is monitored to detect mechanical damage and/or the development of mechanical damage to the power transmission device, wherein detected damage and/or detected damage development is localized and the power generator, the power transmission device, and/or the power receiver are/is controlled such that a mechanical load at the localized damage location and/or damage development location is selectively reduced. A program product including program code sections with which such a method is feasible when the program product is executed on a programmable controller, a computer, or other programmable device.

Abstract: A method of, and a system for, controlling and predicting the health of a torque converter clutch control system is provided. The method includes determining, via a controller, rotational input and output speeds of the torque converter and a torque converter clutch slip. The method also includes determining, via the controller, whether a set of predetermined conditions are met for predicting the health of the torque converter clutch control system. The method includes gathering a plurality of initial features of the vehicle propulsion system, determining statistical information about the plurality of initial features, and selecting at least one feature of the vehicle propulsion system based on the statistical information. Furthermore, the method includes classifying the health of the torque converter clutch control system based on the selected feature or features. In some forms, principal component analysis is used to select the feature or features used for classification.