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US 8,985,291 B2Granted
Differential unit with damper system
AssigneeFord Global Technologies, LLC
InventorsJaved Iqbal, Amir E. Keyvanmanesh, Yitzongn Chern, Tony Ge, Wan Joe Chen
Life of this patent
Estimating the term…
Abstract
A vehicle differential unit (DU), including: a torsional damper assembly having a plurality of independently sprung damper assemblies positioned with respect to the DU, each damper assembly configured to reduce noise or vibration generated by the DU in a predetermined frequency range.
Claims13
A vehicle differential unit (DU), comprising:
- a clutch carrier including a clutch pack, a hub mounted radially outward around the clutch pack, and a housing surrounding the hub;
- a torsional damper assembly having independently sprung first and second damper assemblies, each damper assembly configured to reduce vibration generated by the DU in separate predetermined frequency ranges, the first damper assembly mounted between the housing and the hub, and the second damper assembly mounted between the housing and the hub, spaced axially from the first damper assembly.
A vehicle driveline assembly, comprising:
- a propshaft;
- a differential;
- a clutch carrier, connecting the propshaft to the differential, including a clutch pack, a hub mounted radially outward around the clutch pack, and a housing surrounding the hub and secured to the differential;
- a first damper assembly mounted between the housing and the hub and including an elastic ring mounted to a damper ring, the first damper assembly configured to dampen vibrations in a first frequency range;
- and
- a second damper assembly mounted between the housing and the hub, spaced axially from the first damper assembly, and including a second elastic ring and a second damper ring mounted to the second elastic ring, the second damper assembly configured to dampen vibrations in a second frequency range different from the first frequency range.
3 more elements
A method of manufacturing a vehicle differential unit, comprising:
- mounting a first damper to a radially outer surface of a clutch carrier hub;
- connecting a second damper, configured to damp different frequencies than the first damper, to the outer surface, axially spaced from the first damper;
- mounting the hub around a clutch pack;
- mounting a clutch carrier housing around the hub, the first and second dampers located between the housing and hub.
1 more element
Dependencies are inferred from the claim text.