Failures related to turbochargers rank high on the score board of non-planned outages of marine diesel engines. It is a vital component in optimizing operation economics. It is designed and built in close co-operation with the engine builders and its operation parameters should be well known. Hence, it should be possible to describe operations and maintenance procedures that will allow trouble-free operation at least for a period corresponding to other key components like main engine bearings or, why not, the crankshaft itself. Of course, unexpected failures may happen as they also do with main bearings etc., but when engine downtime due to unexpected failures becomes the rule rather than the exception it is time to examine the causes very carefully. If the interior is not bright and shiny at the time of failure, or if there is just the slightest corrosion attack, nick or contact mark along the leading edges of blades or vanes the manufacturer automatically ascribes failures to excessive fouling, corrosion or foreign object damage. He may be right, but he may be so because there is something wrong with the design, the materials of construction or the operation and maintenance manual and not necessarily due to special circumstances in the actual operational environment or negligence of the engine crew. This paper will review some failure cases from the past 10 years in an attempt to shift focus from misuse or poor cleanliness to materials selection and design as the main cause of failure. It will deal with failures due to corrosion, stress corrosion, fatigue and creep and it will hopefully stimulate the discussions within the turbocharger industry.
Turbocharger failures, a law of nature or neglect
Ausfälle von Abgasturboladern, ein Naturgesetz oder Vernachlässigung?
2001
6 Seiten, 9 Bilder, 1 Tabelle, 3 Quellen
Conference paper
Storage medium
English
Turbocharger impeller, method of manufacturing the same, turbocharger, and turbocharger unit
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