Transmission isolation assembly
AssigneeFord Global Technologies, LLC
InventorDavid Allen Janson
Life of this patent
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Abstract
An isolation assembly (26) for transferring torque between an engine (20) and a planetary transmission (30) includes both a radial spring assembly (56) and a viscous fluid damper (58). A damper plate (76) is rotationally coupled to the engine (20) and to the radial spring assembly (56). The damper plate (76) is also coupled to the viscous fluid damper (58). The torque output from the damper (58) and radial spring assembly (56) is then coupled to the input to the transmission (30).
Claims14
An isolation assembly for use with an engine and a planetary transmission, the isolation assembly comprising:
- an input assembly adapted to be rotationally coupled to the engine;
- an output assembly adapted to be rotationally coupled to the transmission and adjacent the input assembly to form a cavity therebetween;
- a plurality of generally radially oriented spring assemblies having a first radially inner end coupled to one of the input assembly and the output assembly, and a second radially outer end coupled to the other of the input assembly and the output assembly;
- and
- a viscous damper including a viscous fluid within the cavity, and a plate, having a front side and a back side, mounted within the cavity, forming first and second subcavities within the main cavity adjacent to the front side and the back side respectively.
An isolation assembly for use with an engine and a planetary transmission, the isolation assembly comprising:
- an input assembly adapted to be rotationally coupled to the engine;
- an output assembly adapted to be rotationally coupled to the transmission and adjacent to the input assembly to form a cavity therebetween, and including a generally cylindrical hub member, adapted to rotationally couple to the transmission, and a damper cover mounted on and extending radially from the hub, with the damper cover rotatable relative to the hub;
- a plurality of generally radially oriented spring assemblies having a first radially inner end coupled to one of the input assembly and the output assembly, and
- a second radially outer end coupled to the other of the input assembly and the output assembly;
- and a viscous damper including a viscous fluid within the cavity.
A vehicle driveline that is coupled to an engine, the driveline comprising:
- a planetary transmission having an input member and an output member, with a plurality of planetary gear sets coupled therebetween;
- and
- an isolation assembly including an input assembly adapted to be rotationally coupled to the engine;
- an output assembly adapted to be rotationally coupled to the transmission and adjacent to the input assembly to form a cavity therebetween, and including a generally cylindrical hub member, adapted to rotationally couple to the transmission, and a damper cover mounted on and extending radially from the hub, with the damper cover rotatable relative to the hub;
- a plurality of generally radially oriented spring assemblies having a first radially inner end coupled to one of the input assembly and the output assembly, and a second radially outer end coupled to the other of the input assembly and the output assembly;
- and a viscous damper including a viscous fluid within the cavity.
Dependencies are inferred from the claim text.