A methodology to study oil-coking problem in small turbochargers

In compliance with oncoming emission directives, turbocharging and increasing complexity in the turbocharger system demands a great effort from researchers on the development of effective procedures and tools to cope with the new technological exigencies. This article describes a methodology for stu...

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Bibliographic Details
Published in:International Journal of Engine Research 2020-09, Vol.21 (7), p.1193-1204
Main Authors: Serrano, Jose Ramon, Izaguirre, Andrés Omar Tiseira, García-Cuevas, Luis Miguel, Usaquén, Tatiana Rodriguez, Guillaume, Mijotte
Format: Article
Language:English
Subjects:
Coking
Emission analysis
Engine tests
Lubrication systems
Performance evaluation
Post-processing
Superchargers
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Summary:In compliance with oncoming emission directives, turbocharging and increasing complexity in the turbocharger system demands a great effort from researchers on the development of effective procedures and tools to cope with the new technological exigencies. This article describes a methodology for studying oil-coking influence in turbocharger performance. A preliminary evaluation and calibration is done. The aim of this work focuses on the development of methodologies and tools that help to evaluate and understand the consequences that degraded oils can generate in the bearing system during enhanced oil-coking procedure. Several experimental tests have been carried out in an engine test bench and using an independent lubrication system that only feeds the turbocharger. The test campaign is done under a specific engine cycle and using oil artificially contaminated at two different levels. The work is divided into two parts. The first part provides a description and definition of test conditions for measuring of the maximum temperature in the bearing system and the second part tackles the measurement and post-processing of the main instantaneous parameters defining the engine and turbocharger behavior.
ISSN:1468-0874
2041-3149
DOI:10.1177/1468087418803197