Torsion damping mechanism with a viscous coupling

Details Torsion damping mechanism with a viscous coupling Torsion damping mechanism with a viscous coupling

1984-05-29

1985-12-10

Krizmanich, George H.

192 clutches and power-stop control

Vortex-flow drive and clutch

192 58B, 1921062, F16D 314

Patent

active

045573573

ABSTRACT:
A mechanism (19 or 200) disposed in a torque converter housing (24) for damping torsionals in a vehicle driveline. The mechanism (19) comprises a viscous coupling (22) including a housing (64) having two sidewalls (24a, 68) defining a chamber (70) containing a viscous liquid, and a clutch member (72) disposed in the chamber for viscous clutching coaction with the housing. One of the sidewalls (24a) is defined by an end wall of the torque converter housing. The housing and clutch member are interconnected by a spring assembly (20) including flat torsion springs (61, 62) which transmit steady-state driveline torque and isolate driveline torsionals. The inner surfaces (24b, 68a) of housing (64) each include two circumferentially spaced clutching surfaces separated by the clutch member. The clutch member has oppositely facing surfaces (72b, 72c) each which include two flat circumferentially spaced clutching surfaces. When the clutching surfaces of the housing are disposed opposite the clutching surfaces of the clutch member, the clutching coaction therebetween is a maximum. When the clutching surfaces of the housing are disposed opposite the spaces between the clutching surfaces of the clutch member, the clutching coaction is a minimum. Mechanism (200) differs from mechanism (19) mainly with respect to the clutching surfaces and the position of the spring assemblies. Mechanism (19) has flat clutching surfaces, and the spring assembly is external of the viscous coupling, whereas mechanism (200) has annular rings defining the clutching surfaces, and the spring assembly is internal of the viscous coupling.

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