Patent ID: 9581232
Date: 2017-02-28
CPC Classifications: F02B,F16D,F16F,F16H

Claim:
1. A noise-damping assembly for a combustion engine, the assembly being adapted to be fixed on an engine crankshaft and comprising: a belt pulley for driving auxiliary engine equipment and a torsional vibration damper, wherein the belt pulley is of a decoupling type and is arranged to be able to change its rotational angle relative to the crankshaft and the torsional vibration damper, and the torsional vibration damper is partially positioned in a corresponding annular recess in the belt pulley, creating an annular cavity in the recess between the torsional vibration damper and the belt pulley, and wherein the assembly further includes a noise-damping annular seal ring positioned in the annular cavity and being arranged to close off at least a part of the annular cavity from air surrounding the assembly, the annular seal ring comprising a resilient material and designed to be biased against and slidingly seal against an inner wall of the recess and/or the torsional vibration damper.