Torque transmitting and torsion damping apparatus for use in mot

Details Torque transmitting and torsion damping apparatus for use in mot Torque transmitting and torsion damping apparatus for use in mot

1988-12-13

1990-01-02

Bonck, Rodney H.

192 clutches and power-stop control

Clutches

Axially engaging

1921062, 74574, 464 68, F16F 1512, F16F 1530

Patent

active

048907103

ABSTRACT:
A torsion damping apparatus between the crankshaft of the engine and the input shaft of the change-speed transmission of a motor vehicle has two flywheels one of which is driven by the crankshaft and the other of which drives the input shaft by way of a friction clutch which generates heat. In order to prevent the transfer of heat from the friction clutch to the antifriction bearing between the flywheels, which are rotatable relative to each other against the opposition of a damper, the bearing is at least partially surrounded by a thermal barrier of synthetic plastic, ceramic or metallic material which prolongs the useful life of the bearing and enhances the torsion damping action of the damper. The thermal barrier can constitute or form part of the damper. The bearing can be disposed radially inwardly of the location of engagement between the clutch and the other flywheel and can be cooled by streams of air flowing through an annulus of passages each having a first end disposed radially inwardly of the friction surface of the other flywheel and a larger second end in a second surface of the other flywheel opposite the friction surface. Heat barriers in the other flywheel can alternate with the passages in the circumferential direction of the other flywheel.

REFERENCES:
patent: 2986432 (1961-05-01), Schlauch
patent: 4002043 (1977-01-01), Yoshida
patent: 4727970 (1988-03-01), Reik et al.

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