Exam Question
Explain why the following problems occur in turbocharger nozzles, shrouds and blades, their effects on turbocharger operation and remedies (16)
(a) Build-up of deposits
(b) Hot corrosion
(c) Erosion
Class 2 (2nd Engineer)
MEKM
📅 Dec 2023
Reference Answer
Problems in Turbocharger Nozzles, Shrouds, and Blades
(a) Build-up of Deposits:
Residual fuels contain significant impurities such as carbon, ash, silica, and alumina. Additives in fuel oil can also contribute to specific fuel-related issues. Incomplete combustion, often caused by
high Conradson Carbon Residue (CCR) and ignition delay , leads to carbon deposits accumulating in the gas passages of the turbocharger.
(a) Build-up of Deposits:
Residual fuels contain significant impurities such as carbon, ash, silica, and alumina. Additives in fuel oil can also contribute to specific fuel-related issues. Incomplete combustion, often caused by
high Conradson Carbon Residue (CCR) and ignition delay , leads to carbon deposits accumulating in the gas passages of the turbocharger.
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