Filtering pulley
AssigneeMuviq S.R.L.
InventorsGianluca Cariccia, Andrea Guala, Gilberto Delle Rose
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Abstract
Filtering pulleys for an accessory transmission of an internal combustion engine have a hub, an annular crown provided with a profile configured to cooperate with a transmission belt positioned externally coaxial around an axis (A) to the hub and supported in rotationally free motion on the hub itself, and a filtering unit for transmitting the torque interposed between the hub and the annular crown. The filtering unit has a torsion spring, a carrier, and a torque limiting joint cooperating with each other to transmit a torque between the hub and the crown. The filtering pulleys can include a damping means carried by a member that is integral with one of the hub and crown and configured to provide variable damping according to the torque.
Claims14
Filtering pulley for an accessory transmission of an internal combustion engine, comprising:
- a hub,
- an annular crown provided with a profile configured to cooperate with a transmission belt, externally coaxial around an axis (A) to said hub and supported in rotationally free motion on the hub itself,
- a filtering unit for transmitting torque interposed between said hub and said crown, the filtering unit comprising a torsion spring, a carrier and a torque limiting joint cooperating with each other to transmit a torque between said hub and said crown,
- damping means carried by a member integral with one of said hub and said crown, said damping means being configured to provide variable damping according to said torque, and
- a sliding bearing radially interposed between said hub and said crown, said damping means being carried by said sliding bearing.
Dependencies are inferred from the claim text.