5.3.2.1
Steel spring damper
) is a tuned torsional vibration damper. It consists of two main
parts:
•
The inner part (inner star (005) and spring pack (004)) is attached to the crankshaft flange
at the free end.
•
The outer part (side plates (001), clamping ring (002) and intermediate pieces (003)) is
connected with spring packs (004) to the inner part.
The damper is supplied with pressurized system oil that fills the chambers between the inner and
outer part. The usual setting value for the oil supply pressure is 2.8 bar. But the setting value can
be different, refer to the specification of the damper manufacturer.
If torsional vibrations move the steel springs, oil is pressurized on one side of the oil chambers
and pushed through small clearances to the other side of the chambers. This small oil flow creates
the damping effect of the damper. The combined effect of spring stiffness and damping decreases
the torsional vibrations in the shafting system. The damping work causes heat which is dissipated
by the oil flow. The oil drains into the crankcase.
The optional damper monitoring system monitors the dynamic twist in the damper and the oil
supply pressure.
Fig 5-12
Steel spring damper (generic)
001
002
003
004
005
001
001
002
005
006
001
Legend
001
Side plate
004
Spring pack
002
Clamping ring
005
Inner star
003
Intermediate piece
006
Sealing
X72-B
AA00-3130-00AAA-043A-A
Operation Manual
Torsional vibration damper
Winterthur Gas & Diesel Ltd.
- 163 -
Issue 003 2021-12
