Turbochargers (TCs) improve performance in internal combustion engines. Due to low production costs, TC assemblies are supported on floating ring bearings (FRBs) and showing subsynchronous motions of significant amplitudes over a wide speed range. However, the subsynchronous whirl motions generally reach a limit cycle enabling continuous operation. The paper advances progress on the validation against measurements of linear and nonlinear rotordynamic models for predicting shaft motions of automotive TCs. A comprehensive thermohydrodynamic model predicts the floating ring speeds, inner and outer film temperatures and lubricant viscosity changes, clearances thermal growth, operating eccentricities for the floating ring and journal, and linearized force coefficients. A nonlinear rotordynamics program integrates the FRB lubrication model for prediction of system time responses under actual operating conditions. Measurements of shaft motion in a TC unit driven by pressurized air demonstrate typical oil-whirl induced instabilities and, due to poor lubricant conditions, locking of the floating rings at high shaft speeds. Nonlinear predictions are in good agreement with the measured total amplitude and subsynchronous frequencies when implementing the measured ring speeds into the computational model. The computational tools aid to accelerate TC prototype development and product troubleshooting.
Skip Nav Destination
STLE/ASME 2006 International Joint Tribology Conference
October 23–25, 2006
San Antonio, Texas, USA
Conference Sponsors:
- Tribology Division
ISBN:
0-7918-4259-2
PROCEEDINGS PAPER
Rotordynamics of Small Turbochargers Supported on Floating Ring Bearings: Highlights in Bearing Analysis and Experimental Validation Available to Purchase
Luis San Andre´s,
Luis San Andre´s
Texas A&M University, College Station, TX
Search for other works by this author on:
Juan Carlos Rivadeneira,
Juan Carlos Rivadeneira
Texas A&M University, College Station, TX
Search for other works by this author on:
Christopher Groves,
Christopher Groves
Honeywell Turbo Technologies, Thaon les Vosges, France
Search for other works by this author on:
Kostandin Gjika,
Kostandin Gjika
Honeywell Turbo Technologies, Thaon les Vosges, France
Search for other works by this author on:
Gerry LaRue
Gerry LaRue
Honeywell Turbo Technologies, Torrance, CA
Search for other works by this author on:
Luis San Andre´s
Texas A&M University, College Station, TX
Juan Carlos Rivadeneira
Texas A&M University, College Station, TX
Christopher Groves
Honeywell Turbo Technologies, Thaon les Vosges, France
Kostandin Gjika
Honeywell Turbo Technologies, Thaon les Vosges, France
Gerry LaRue
Honeywell Turbo Technologies, Torrance, CA
Paper No:
IJTC2006-12001, pp. 1213-1220; 8 pages
Published Online:
October 2, 2008
Citation
San Andre´s, L, Rivadeneira, JC, Groves, C, Gjika, K, & LaRue, G. "Rotordynamics of Small Turbochargers Supported on Floating Ring Bearings: Highlights in Bearing Analysis and Experimental Validation." Proceedings of the STLE/ASME 2006 International Joint Tribology Conference. Part B: Magnetic Storage Tribology; Manufacturing/Metalworking Tribology; Nanotribology; Engineered Surfaces; Biotribology; Emerging Technologies; Special Symposia on Contact Mechanics; Special Symposium on Nanotribology. San Antonio, Texas, USA. October 23–25, 2006. pp. 1213-1220. ASME. https://doi.org/10.1115/IJTC2006-12001
Download citation file:
8
Views
Related Proceedings Papers
Related Articles
Rotordynamics of Small Turbochargers Supported on Floating Ring Bearings—Highlights in Bearing Analysis and Experimental Validation
J. Tribol (April,2007)
Thermohydrodynamic Study of Multiwound Foil Bearing Using Lobatto Point Quadrature
J. Tribol (April,2009)
A Virtual Tool for Prediction of Turbocharger Nonlinear Dynamic Response: Validation Against Test Data
J. Eng. Gas Turbines Power (October,2007)
Related Chapters
Gear Lubricants and Lubrication—Tomorrow's Requirements
Tribology of Mechanical Systems: A Guide to Present and Future Technologies
Wear and Contact Fatigue Properties of a Novel Lubricant Additive
Bearing and Transmission Steels Technology
Compressive Deformation of Hot-Applied Rubberized Asphalt Waterproofing
Roofing Research and Standards Development: 10th Volume