Fichtel & Sachs Ag

Cora Carlson

Bernhard Schierling

Hilmar Gobel

Jorg Sudau

Jurgen Kleifges

Rudolf Bauerlein

A flywheel device has at least two inertial masses which can rotate relative to one another against the action of elastic elements of a damping device, one of which inertial masses, namely the output-side inertial mass which is farther from a drive system, such as for example the crankshaft of an internal combustion engine, is guided both radially and axially by way of a bearing arrangement with respect to the input-side inertial mass. The bearing arrangement has at least one axial plain bearing and one radial plain bearing. Both plain bearings guide the output-side inertial mass with respect to the input-side inertial mass with a clearance, the size of which is determined so that when a wobbling motion is introduced from the crankshaft to the input-side inertial mass, the output-side inertial mass, under the effect of centrifugal forces, can perform a self-stabilization. The radial plain bearing, to bring it as close as possible to the crankshaft, is engaged in the vicinity of the end of the hub of the output-side inertial mass, which end faces the crankshaft.

Flywheel device with a system of plain bearings

A flywheel with two centrifugal masses has a secondary centrifugal mass assembled from two individual parts, wherein the first part is actively connected to a torsion damping device, and the second part has a friction surface for a friction clutch. To increase the useful life of the flywheel system, the two parts of the secondary centrifugal mass are held at a distance from one another, and are connected to one another in their radially inner area essentially only by means of axially projecting spacer elements, which spacer elements are distributed circumferentially, and by means of rivets or screws. The rear side of the second part of the secondary centrifugal mass can thus be air cooled by the system of air cooling passages.

Air-cooled flywheel and a friction clutch for a transmission of a motor

For a dual-mass flywheel in the driving train of a motor vehicle there is proposed a cage-free ball-bearing 9 which has solid balls and is therefore particularly narrow in the axial direction and is sealed in a lubricant-tight manner by a sealing and insulating ring arrangement 31 formed by two ring elements 27, 29. The ring elements 27, 29 are tightly connected to one another axially beyond the ball-bearing 9 and rest with inherent elasticity under bias on the lateral faces of the ball-bearing 9.

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Hambach, Germany

Cora Carlson