
36 LIGHT AND HEAVY VEHICLE TECHNOLOGY
Figure 1.69 A production crankshaft balancing and correcting machine (Avery-Denison)
1.9 CRANKSHAFT TORSIONAL VIBRATION
DAMPERS
The causes of crankshaft vibration
When, say, a heavy and very rugged-looking engine
crankshaft is being physically handled in the workshop,
the impression given of rigidity is such that the possi-
bility of it being set into a state of vibration might seem
unlikely. However, the crankshaft is viewed rather
differently by an engine designer, who recognizes that
it does in fact behave as an elastic body. This is because
in practice the crankshaft cannot be made perfectly
rigid, an ...