Abstract: In an aspect, a decoupler is provided for mounting to a shaft and engaging a belt for transmitting power between an engine and an accessory in a vehicle. The decoupler includes an input member and an output member. One of the input and output member engages the belt. A wrap spring clutch and an isolation spring are positioned to transfer torque in series between the input and output members. A carrier is positioned to hold an end of the wrap spring clutch and an end of the isolation spring to permit torque transfer therebetween. The wrap spring clutch is positioned to transfer torque between the isolation spring and one of the input member and the output member. The carrier is supported on a support surface that is fixed to said one of the input member and the output member.

Abstract: A power source is provided for integration with a thermal regulation subsystem. The power source includes a battery pack and a heat exchanger that is used to transfer heat between a first heat transfer fluid associated with the thermal regulation subsystem, and a second heat transfer fluid associated with the battery pack. A thermal management unit actuates a second heat transfer fluid valve to control flow of the second heat transfer fluid through flow loops that include and exclude the heat exchanger based on a temperature of the battery pack. The thermal management unit may activate electrically-powered heat transfer elements of the heat exchanger based on the temperature of the battery pack.

Abstract: A decoupler pulley is provided for automotive belt-driven accessory drives, which utilizes a single torsion coil spring that provides torsional resiliency and overrunning functionality. As the torsion spring expands it increasingly pinches a bushing disposed between a radially expansible hub and pulley to thereby provide proportional damping.

Abstract: A decoupler pulley is provided for automotive belt-driven accessory drives, which utilizes a single torsion coil spring that provides torsional resiliency and overrunning functionality. As the torsion spring expands it increasingly pinches a bushing disposed between a radially expansible hub and pulley to thereby provide proportional damping.

Abstract: A decoupler having an input hub, an output member, a one-way clutch, and at least one isolation spring. Rotary power is transmitted in a predetermined rotational direction from the input hub, through the one-way clutch, through the isolation spring and to the output member. A method for forming a decoupler is also provided.

Abstract: A decoupler having an input member, an output member and a combination one-way clutch and torsional isolator that couples the input and output members. The combination one-way clutch and torsional isolator includes a single helical coil spring. The decoupler being designed to provide torsional damping through a range of torque transmitted through the decoupler, the range including a maximum rated torque for the decoupler.

Abstract: A decoupler that includes a hub, a drive member and a one-way clutch and torsionally resilient coupling. The drive member is configured to engage an endless power transmitting element. The one-way clutch and torsionally resilient coupling is disposed in series in a torque path and has a carrier and a wrap spring. The carrier defines a groove. The wrap spring is formed of wire and has an engagement end and a plurality of helical coils. The engagement end is being shorter in overall length than a length of one of the helical coils. The engagement end is received in the groove. The carrier is received in a pocket formed in a rotary member that can be the hub, the drive member, or a component in a torque path between the hub and the drive member. An axial end face of the wire that forms the wrap spring is abutted against an edge of the pocket.

Abstract: In one aspect, the invention relates to a tensioner that is capable of precognitively anticipating when it is desirable to increase the tension in a belt or other endless drive element so as to prevent belt slip prior to events that would raise the risk of it.

Abstract: An engine starter apparatus having a clutch assembly and a ring gear or pulley. The clutch assembly has a plate structure, a drive hub and a clutch element for selectively coupling the drive hub to the plate structure. The ring gear or pulley is coupled to the plate structure.

Abstract: A decoupler that includes a hub, a drive member and a one-way clutch and torsionally resilient coupling. The drive member is configured to engage an endless power transmitting element. The one-way clutch and torsionally resilient coupling is disposed in series in a torque path and has a carrier and a wrap spring. The carrier defines a groove. The wrap spring is formed of wire and has an engagement end and a plurality of helical coils. The engagement end is being shorter in overall length than a length of one of the helical coils. The engagement end is received in the groove. The carrier is received in a pocket formed in a rotary member that can be the hub, the drive member, or a component in a torque path between the hub and the drive member. An axial end face of the wire that forms the wrap spring is abutted against an edge of the pocket.

Abstract: An engine starter that employs a clutch between a flywheel or flex plate and a plate structure that is configured to receive rotary power from a starter motor through a transmission. The transmission may include ring and pinion gears or a belt that transmits rotary power between pulleys.

Abstract: A driven accessory having a clutch that permits selective operation of an accessory portion. The clutch employs rotational inertia to control driving engagement of a wrap spring to an interior clutch surface on a drive member and/or driving disengagement of the wrap spring from the interior clutch surface.

Abstract: In one aspect, the invention relates to a tensioner that is capable of precognitively anticipating when it is desirable to increase the tension in a belt or other endless drive element so as to prevent belt slip prior to events that would raise the risk of it.

Abstract: A decoupler having an input member, an output member and a combination one-way clutch and torsional isolator that couples the input and output members. The combination one-way clutch and torsional isolator includes a single helical coil spring. The decoupler being designed to provide torsional damping through a range of torque transmitted through the decoupler, the range including a maximum rated torque for the decoupler.

Abstract: A decoupler having an input hub, an output member, a one-way clutch, and at least one isolation spring. Rotary power is transmitted in a predetermined rotational direction from the input hub, through the one-way clutch, through the isolation spring and to the output member. A method for forming a decoupler is also provided.

Abstract: An engine starter apparatus having a clutch assembly and a ring gear or pulley. The clutch assembly has a plate structure, a drive hub and a clutch element for selectively coupling the drive hub to the plate structure. The ring gear or pulley is coupled to the plate structure.

Abstract: A driven accessory having a clutch that permits selective operation of an accessory portion. The clutch employs rotational inertia to control driving engagement of a wrap spring to an interior clutch surface on a drive member and/or driving disengagement of the wrap spring from the interior clutch surface.

Abstract: A driven accessory having a clutch that permits selective operation of an accessory portion. The clutch employs rotational inertia to control driving engagement of a wrap spring to an interior clutch surface on a drive member and/or driving disengagement of the wrap spring from the interior clutch surface.

Abstract: An engine starter that employs a clutch between a flywheel or flex plate and a plate structure that is configured to receive rotary power from a starter motor through a transmission. The transmission may include ring and pinion gears or a belt that transmits rotary power between pulleys.