In order to reduce friction losses and vibrations in main engine bearings, fluid film lubrication is combined to controllable radial oil injection. This work evaluates different geometric hybrid bearing configurations and control pressure rules for applying radial oil injection in main engine bearings of internal combustion engines. The conventional hydrodynamic lubrication (CHL) is combined with hydrostatic lubrication which is actively modified by radially injecting oil at controllable pressures, through orifices circumferentially located around the bearing surface. The behaviour of a main bearing of a medium size combustion engine, operating with radial oil injection and with four different control strategies is analyzed, giving some insights into the minimum fluid film thickness (OFT) and reduction of viscous friction losses. The behaviour of such parameters is compared to the case when the bearing operates with conventional hydrodynamic lubrication.
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STLE/ASME 2010 International Joint Tribology Conference
October 17–20, 2010
San Francisco, California, USA
Conference Sponsors:
- Tribology Division
ISBN:
978-0-7918-4419-9
PROCEEDINGS PAPER
Controllable Radial Oil Injection Applied to Main Engine Bearings: Hybrid Bearing Configurations and Control Pressure Rules Available to Purchase
Edgar A. Estupinan,
Edgar A. Estupinan
University of Tarapaca, Arica, Chile
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Ilmar F. Santos
Ilmar F. Santos
Technical University of Denmark, Kgs. Lyngby, Denmark
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Edgar A. Estupinan
University of Tarapaca, Arica, Chile
Ilmar F. Santos
Technical University of Denmark, Kgs. Lyngby, Denmark
Paper No:
IJTC2010-41170, pp. 145-147; 3 pages
Published Online:
April 14, 2011
Citation
Estupinan, EA, & Santos, IF. "Controllable Radial Oil Injection Applied to Main Engine Bearings: Hybrid Bearing Configurations and Control Pressure Rules." Proceedings of the STLE/ASME 2010 International Joint Tribology Conference. STLE/ASME 2010 International Joint Tribology Conference. San Francisco, California, USA. October 17–20, 2010. pp. 145-147. ASME. https://doi.org/10.1115/IJTC2010-41170
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