Function of
Labyrinth Seals
- The
bearings are separated from the blower and turbine by labyrinth seals.
- These
seals are sealed by air supply from the discharge of blower to
prevent oil entering the blower and to prevent contamination of the
oil by the exhaust gas.
- In case of
defective labyrinth seals on blower side, oil is leaked into the air
system the cooling surfaces are covered with oil which are insulators
and the cooling efficiency will be reduced. Also there will be
deposits on the blower and the blower efficiency will be reduced.
- In case of
defective labyrinth seals on turbine side, the oil is leaked into the
exhaust side and there will be carbon deposits on the nozzle
and turbine blades. Reduce blower efficiency and fire in the
exhaust piping. It will cause turbocharger surging. Oil will
contaminate with exhaust gas.
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