Analysis of diverse simulation models for combustion engine journal bearings and the influence of oil condition

The paper deals with the comparison of different models, from simple to complex, for the simulation of non-stationary response of the journal bearings used in combustion engines. The variety of simulation models covers classical methods from Holland, Butenschoen and numerical methods based on the Hy...

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Bibliographic Details
Published in:Tribology international 2006-08, Vol.39 (8), p.820-826
Main Authors: Bukovnik, Saša, Dörr, Nicole, Čaika, Valdas, Bartz, Wilfried J., Loibnegger, Bernhard
Format: Article
Language:English
Subjects:
Applied sciences
Bearing
Bearings, bushings, rolling bearings
Drives
Exact sciences and technology
Friction, wear, lubrication
Fuel dilution
Hydrodynamic
Machine components
Mechanical engineering. Machine design
Simulation
Viscosity
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Summary:The paper deals with the comparison of different models, from simple to complex, for the simulation of non-stationary response of the journal bearings used in combustion engines. The variety of simulation models covers classical methods from Holland, Butenschoen and numerical methods based on the Hydrodynamic (HD), Elasto-hydrodynamic (EHD) and Thermo-elasto-hydrodynamic (TEHD) lubrication theory. Several crankshaft main bearings and connecting rod big end bearings are investigated. The comparison includes the following bearing parameters: Peak Oil Film Pressure (POFP), Minimum Oil Film Thickness (MOFT) and oil flow. Calculation time is compared, too. Estimation of oil viscosity is discussed over a typical temperature and pressure range found in combustion engines, including the influence of the fuel dilution as an example of the oil aging phenomena.
ISSN:0301-679X
1879-2464
DOI:10.1016/j.triboint.2005.07.023