Automotive fan drive train assembly having a hydraulic...

Details Automotive fan drive train assembly having a hydraulic... Automotive fan drive train assembly having a hydraulic...

F - Mech Eng,Light,Heat,Weapons

16

D

138/11

F16D 33/08 (2006.01) F16D 33/00 (2006.01) F16D 35/00 (2006.01) F16D 39/00 (2006.01)

Patent

CA 2025166

AUTOMOTIVE FAN DRIVE TRAIN ASSEMBLY HAVING A HYDRAULIC COUPLER AND A VISCOUS CLUTCH ABSTRACT OF THE DISCLOSURE A drive train assembly (10) for an automotive fan (12) which includes a hydraulic coupler (22) that dynamically interconnects a fan blade shaft (24) to a driving shaft (18) within a range of radial offsets to permit reduction of clearance required between the fan blade (26) and a body mounted shroud (30). The hydraulic coupler (22) includes driving and driven turbines (48,50) that are drivingly interconnected by means of a fluid (64) operated upon by a plurality of vanes (56,58) located in cavities (52,54) formed in each of the turbines. An anti- friction bearing (28) journals the fan blade shaft (24) in the shroud (30). A universal joint (32) or elastomeric coupler, connects the driving shaft (18) to the fan blade shaft (24) dynamically in any one of a number of relative angular positions. A clutch (20) is included to limit speed of rotation of the fan blade (26) within operational limits.

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