This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Correlating Laboratory Oil Aerosol Coking Rig Tests to Diesel Engine Tests to Understand the Mechanisms Responsible for Turbocharger Compressor Coking
ISSN: 0148-7191, e-ISSN: 2688-3627
Published March 28, 2017 by SAE International in United States
This content contains downloadable datasetsAnnotation ability available
Deposit formation within turbocharger compressor housings can lead to compressor efficiency degradation. This loss of turbo efficiency may degrade fuel economy and increase CO2 and NOx emissions. To understand the role that engine oil composition and formulation play in deposit formation, five different lubricants were run in a fired engine test while monitoring turbocharger compressor efficiency over time. Base stock group, additive package, and viscosity modifier treat rate were varied in the lubricants tested. After each test was completed the turbocharger compressor cover and back plate deposits were characterized.
A laboratory oil mist coking rig has also been constructed, which generated deposits having the same characteristics as those from the engine tests. By analyzing results from both lab and engine tests, correlations between deposit characteristics and their effect on compressor efficiency were observed. The physical characteristics of these deposits, as well as parameters affecting deposit formation such as the chemistry of the oil formulations, oil aerosol particle sizes, and mass of oil mist flow are discussed. The rough/smooth and dry/wet qualities of the deposits were found to correlate most with compressor efficiency loss; thickness and mass of deposits did not correlate.
- Dairene Uy - Ford Motor Company
- George Pranis - Ford Motor Company
- Anthony Morelli - Ford Motor Company
- Arup Gangopadhyay - Ford Motor Company
- Alexander Michlberger - Lubrizol Corp.
- Nicholas Secue - Lubrizol Corp.
- Mike Kinzel - Lubrizol Corp.
- Tina Adams - Lubrizol Corp.
- Kevin Streck - Lubrizol Corp.
- Michael Lance - Oak Ridge National Laboratory
- Andrew Wereszczak - Oak Ridge National Laboratory
CitationUy, D., Pranis, G., Morelli, A., Gangopadhyay, A. et al., "Correlating Laboratory Oil Aerosol Coking Rig Tests to Diesel Engine Tests to Understand the Mechanisms Responsible for Turbocharger Compressor Coking," SAE Technical Paper 2017-01-0887, 2017, https://doi.org/10.4271/2017-01-0887.
Data Sets - Support Documents
|[Unnamed Dataset 1]|
|[Unnamed Dataset 2]|
|[Unnamed Dataset 3]|
|[Unnamed Dataset 4]|
- Florkowski, D. and Selby, T., "The Development of a Thermo-Oxidation Engine Oil Simulation Test (TEOST)," SAE Technical Paper 932837, 1993, doi:10.4271/932837.
- Selby, T., Richardson, J., and Florkowski, D., "Engine Oil Deposits and the TEOST -- Protocol 33 and Beyond," SAE Technical Paper 962039, 1996, doi:10.4271/962039.
- Brown, G., Barr, D., Calder, R., Durham, J. et al., "A New Screen Test for the Thermal Oxidative Stability of Engine Oils - The Glass Panel Coker," SAE Technical Paper 2004-01-2024, 2004, doi:10.4271/2004-01-2024.
- Ohkawa, S., Seto, K., Nakashima, T., and Takase, K., "“Hot Tube Test”-Analysis of Lubricant Effect on Diesel Engine Scuffing," SAE Technical Paper 840262, 1984, doi:10.4271/840262.
- Kagaya, M. and Ishikawa, S., "An Evaluation and Optimization of Lubricants for Turbocharged Gasoline Engines," SAE Technical Paper 840261, 1984, doi:10.4271/840261.
- Wochner, V. T. and Baumgartner, R., "Ablagerungsbildung aus Olnebel-Luft-Gemischen in Dieselmotoren," Tribologie und Schmierungstechnik 6, p. 323, 1991.
- Bartholomaei, N. T., Massey, M. E., and Holstedt, R. A., "Oil mist deposits test. A technique for evaluating the deposit forming tendency of jet engine lubricants," ASLE Transactions 10, pp. 48-57, 1967.
- Sumi, N., Hirano, S., Fujimoto, K., Nakajima, T. et al., "Influence of Engine Oil Properties on Soot Containing Deposit Formation in Turbocharger Compressor," SAE Technical Paper 2013-01-2500, 2013, doi:10.4271/2013-01-2500.
- Uy, D., Storey, J., Sluder, C., Barone, T. et al., "Effects of Oil Formulation, Oil Separator, and Engine Speed and Load on the Particle Size, Chemistry, and Morphology of Diesel Crankcase Aerosols," SAE Int. J. Fuels Lubr. 9(1):224-238, 2016, doi:10.4271/2016-01-0897.
- Hu, Leon. Private communication.
- Syed, N. D. Ma, C., and Yang, C., “The Influence of Tip Clearance on Centrifugal Compressor Stage of a Turbocharger,” 2006, Proceedings of the 4th WSEAS International Conference on Fluid Mechanics and Aerodynamics, Elounda, Greece, August 21-23, pp. 6-11, 2006.