The twisting of the crankshaft due to the regular
power impacts along its length
is called twisting
(torsional) vibration. The vibration damper is installed on
the front end of the crankshaft. It is used for reduction of
torsional vibrations and stops the vibration from building
up to amounts that cause damage.
The damper is made of a flywheel ring (1) connected
to an inner hub (3) by a rubber ring (2). The rubber makes
a flexible coupling between the flywheel ring and the inner
CROSS SECTION OF A VIBRATION DAMPER
1. Flywheel ring. 2. Rubber ring. 3. Inner hub.