5.5
Combustion of heavy fuel oil in diesel engines causes soiling of the tur-
bine blades and nozzle rings of the turbochargers.
Soiling increases with time, so that regular and properly performed clean-
ing is important to remove the accumulated deposits.
The exhaust gas temperature downstream of the cylinders can rise and
the charging pressure at the air receiver can fall if turbine components be-
come soiled.
A soiled turbine also results in rotor unbalance. Severe soiling can lead to
impermissibly high rotor imbalance.
Experience in operation has shown that despite periodic cleaning during
operation, it is impossible to dispense with overhauls during which the tur-
bine and nozzle ring are mechanically cleaned. However, if cleaning is
performed correctly and the cleaning system is properly dimensioned, the
intervals between overhauls can be extended.
The interval between periodic cleaning is very dependent on the operating
conditions. As a rule, cleaning should be carried out every
.
The interval between periodic cleaning is very dependent on the operating
conditions. As a rule, cleaning should be carried out every
Several methods are possible for cleaning the turbine and nozzle ring dur-
ing operation. The cleaning methods described in the following have been
tested and are recommended by ABB Turbo Systems:
Wet cleaning
Dry cleaning
To Next Page
Need help?
General
