Abstract: A hydraulic control system for a vehicle includes a brake control unit having a mechanically actuated master cylinder and an electric motor driven pump. The master cylinder and the pump are each adapted to separately provide pressurized fluid to a brake cylinder. A hydraulically actuated drive coupling selectively transfers torque between rotatable input and output shafts. The rotatable output shaft is adapted to drive a vehicle wheel. The hydraulic control unit is in receipt of pressurized fluid from the pump. The hydraulic control unit includes a valve moveable between a first position where the drive coupling is in communication with the pressurized fluid and torque is transferred by the coupling and a second position where the pressure of the fluid in the cavity is reduced to reduce the torque transferred by the coupling.

Abstract: A water pump assembly for an internal combustion engine including a housing, as well as first and second rotatable shafts supported by the housing. First and second pulleys are fixed for rotation with the first and second shafts, respectively. A pumping member is fixed for rotation with the second shaft. A flexible member engages the first and second pulleys and is sized to slip relative to one of the first and second pulleys when in an unloaded state. A control mechanism selectively applies a load to the flexible member to cease the slipping and drivingly interconnect the first and second pulleys to rotate the pumping member.

Abstract: A vehicle drive train for transferring torque to first and second sets of wheels includes a first driveline adapted to transfer torque to the first set of wheels and a first power disconnection device. A second driveline is adapted to transfer torque to the second set of wheels and includes a second power disconnection device. A hypoid gearset is positioned within one of the first driveline and the second driveline in a power path between the first and second power disconnection devices. The hypoid gearset is selectively disconnected from being driven by either of the first driveline and the second driveline when the first and second power disconnection devices are operated in a disconnected, non-torque transferring, mode.

Abstract: A power transmission device includes a rotatable shaft having an axis of rotation. A lubrication pump includes an inner rotor and an outer rotor in meshed engagement with one another. A clutch continuously drivingly couples one of the inner rotor and the outer rotor and the shaft to limit the power transferred from the shaft to the lubrication pump. The clutch includes a plurality of circumferentially spaced-apart protrusions biasedly engaged with the shaft.

Abstract: A driveline component with a first drive member, which is rotatable about an axis, a second drive member and a clutch. The second drive member has a hub, which is supported on the first drive member for rotation about the axis, and a transmission portion. The transmission portion, which is configured to engage a flexible power transmitting member, is disposed about the hub and aligned to a transmission axis that is generally perpendicular to the axis. The clutch has a spring and a set of interleaved clutch plates having portions that are coupled for rotation with a respective one of the first drive member and the second drive member. The spring generates a force that is transmitted through the hub such that the clutch plates frictionally engage one another. The location of the transmission portion relative to the transmission axis is unaffected by wearing of the set of clutch plates.

Abstract: A mass balance unit having a mass balance housing in which a mass balance shaft is rotatably journaled and a unit housing in which a drive shaft of a secondary unit is rotatably journaled. The mass balance housing is made in one piece and has a bearing section which completely surrounds a bearing opening in which the mass balance shaft is rotatably journaled. The unit housing is also made in one piece with a base section, a wall section and a bearing section. The bearing section of the unit housing completely surrounds a bearing opening in which the drive shaft is rotatably journaled. The drive shaft is operably connected to the balance shaft drivewise. The base section of the unit housing is releasably fastened to a lower side of the mass balance housing while its wall section is adjacent an end face of the mass balance housing.

Abstract: An adjustment device for adjusting the relative angular position of a camshaft with respect to a crankshaft within a specified angle range, the adjustment device having a device for emergency operation of the adjustment device. The device for emergency operation includes a freewheel device which can be activated in an emergency mode of the adjustment device and, in an activated state, is able to allow an adjustment movement of the camshaft with respect to the crankshaft from the current position in a first direction towards an emergency running position and to block an adjustment movement in a second direction opposite thereto.

Abstract: A rotary positive displacement pump employs the higher pressure available at a region within the rotor chamber after the outlet port to augment the force of a biasing spring in a control system. A biasing spring with a lower spring force can thus be employed in the control system, resulting in a pump pressure output characteristic which can more closely match the operating speed varying working fluid requirements for devices supplied by the pump.

Abstract: A pressure relief valve for use in regulating discharge fluid pressure of a pump includes a casted, metal material housing including a passage therein along a longitudinal axis and inlet and outlet ports substantially perpendicular to the longitudinal axis and each having walls that are at an angle less than perpendicular to the longitudinal axis wherein the angle of the wall from being perpendicular to the longitudinal axis is substantially equal to the draft angle from the casting of the housing. A first wall of the outlet intersects with the wall of the passage of the pressure relief valve. A valve body disposed in the passage is movable in the passage against the biasing force of a spring biasing the valve body in a first or closed direction wherein the inlet port and the outlet port are disconnected, until the force at the inlet applied to the valve body overcomes the biasing Force of the spring and the inlet fluid is communicated through the passage and to the outlet.

Abstract: An electric drive unit for a motor vehicle has an electric machine and a lubrication and cooling circuit. The lubrication and cooling circuit includes an aqueous lubricant, which is passed at least through an internal area of the electric machine, in order to cool parts of the electric machine in the internal area.

Abstract: A starting system for a hybrid vehicle includes an internal combustion engine having a crankshaft rotatably supported within an engine block. The starting system includes a pinion gear driven by a starter motor, a drive plate having a set of teeth in constant meshed engagement with the pinion gear, and a one-way clutch. The one-way clutch is adapted to selectively drivingly interconnect the drive plate and the crankshaft. The clutch includes an inner race adapted to be fixed for rotation with the crankshaft, an outer race coupled for rotation with the drive plate, and a plurality of roller elements positioned radially therebetween. A fastener couples the drive plate to the outer race and compresses an elastomeric damper between the drive plate and the outer race.

Abstract: A multi-speed power transmission device includes an input shaft, first and second output shafts and a planetary gearset. An axially moveable sleeve fixes the first output shaft and the input shaft for rotation when in a first position and the sleeve fixes the sun gear and the input shaft for rotation when in a second position. A hub is axially moveable and free to rotate relative to the first output shaft when in the first position. The hub is fixed for rotation with the first output shaft when in the second position. A cam plate is continuously fixed for rotation with the carrier and urges the hub toward its second position when in a second axial position. The input shaft drives the first output shaft at a reduced speed via the planetary gearset when the sleeve, hub and cam plate are at their second positions.

Abstract: A friction clutch comprising a plurality of first clutch plates and a plurality of second clutch plates, wherein at least a portion of each of the first clutch plates is frusto-conical in shape and wherein at last a portion of each of the second clutch plates has a shape that conforms to the at least the portion of the first clutch plates. A method for forming a friction clutch is also provided.

Abstract: An electromagnetic clutch includes an electromagnetic coil positioned within a coil housing. A pulley rotates relative to the housing and the coil. A shaft is rotatably supported by the housing. A hub plate is fixed for rotation with the shaft. A floating element is positioned between the pulley and the hub plate. An elastomeric ring is mounted between the pulley and the floating element and provides a driving connection therebetween. The elastomeric ring is sized to urge the floating element into frictional driving engagement with the hub plate and is compressible during energization of the coil to decouple the floating element from the hub plate.

Abstract: A hybrid vehicle starting system includes a pinion gear driven by a starter motor, and a drive plate having a set of teeth in constant meshed engagement with the pinion gear. A one-way clutch drivingly interconnects the drive plate and an engine crankshaft and includes an inner race fixed for rotation with the crankshaft, an outer race fixed for rotation with the drive plate, and a plurality of rollers positioned radially therebetween. A cage positions the rollers in circumferentially spaced apart alignment with outer cam surfaces. A split ring is positioned within grooves on each of the inner race and the outer race. The split ring is fitted within one of the grooves at a first clearance and fitted within the other of the grooves at a predetermined second clearance at least ten times the first clearance to isolate the outer race from vibrations of the inner race.

Abstract: A starting system for a hybrid vehicle includes a pinion gear driven by a starter motor and a drive plate having a set of teeth in constant meshed engagement with the pinion gear. A one-way clutch assembly drivingly interconnects the drive plate and an engine crankshaft and includes an inner race fixed for rotation with the crankshaft, an outer race coupled for rotation with the drive plate and a plurality of rollers positioned radially therebetween. The outer race includes a first set of teeth drivingly engaging a second set of teeth on the drive plate and arranged to allow the outer race to rotate about an axis misaligned with an axis of rotation of the drive plate. A spring engages the drive plate and the outer race to urge the first and second sets of teeth into alignment with one another.

Abstract: A power transmission device for a four-wheel drive vehicle includes an input shaft adapted to be driven by a power source. A first output shaft is rotatable about a first axis and adapted to transmit torque to a first driveline. A second output shaft is adapted to transmit torque to a second driveline and is rotatable about a second axis. The first and second axes diverge from one another. A transfer unit includes a drive member rotatably supported on the first output shaft and a driven member coupled to the second output shaft. A joint is positioned within a cavity formed in the driven member and drivingly interconnects the driven member and the second output shaft. The driven member includes first and second portions separable from and re-mountable to each other to allow service to the joint.

Abstract: A starting system for an internal combustion engine includes a pinion gear selectively driven by a starter motor, a drive plate having a set of teeth in constant meshed engagement with the pinion gear and a one-way clutch adapted to interconnect the drive plate and an engine crankshaft. The clutch assembly includes an inner race adapted to be fixed for rotation with the crankshaft. An outer race is fixed for rotation with the drive plate and has circumferentially spaced apart cam surfaces. The clutch also includes a cage for positioning rollers in circumferentially spaced apart alignment with the cam surfaces. A pair of seal plates are coupled to one of the inner race and the outer race. Each seal plate is positioned proximate to and spaced apart from the other of the inner race and the outer race.

Abstract: A transmission for use in a motor vehicle having an engine and a driveline is provided. The transmission includes an input shaft driven by the engine, an output shaft adapted for connection to the driveline, a mainshaft, a first planetary gearset, a motor/generator and a second planetary gearset. The first planetary gearset includes a first input member driven by the input shaft, a first output member driving the mainshaft and a first reaction member. The second planetary gearset includes a second input member, a second output member fixed to the output shaft and a ring gear operable to drive or be driven by the motor/generator. A rotor of the motor/generator circumscribes and is fixed to the ring gear.

Abstract: A transfer case includes an input shaft, first and second output shafts, and a planetary gearset including a sun gear, a ring gear and planet gears rotatably supported on a carrier coupled to the first output shaft. A collar is driven by the sun gear and selectively drives the carrier. The ring gear is moveable between first and second positions. The collar is coupled to the ring gear for movement therewith between first and second positions. The collar is operable in its first position to couple the sun gear to the carrier and operable in its second position to be released from engagement with the carrier. The ring gear is operable in its first position to be released from coupled engagement with a stationary member and operable in its second position to be coupled to the stationary member. A mechanism moves the ring gear between its first and second positions.