Modeling of combustion engine bearing lubrication
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Cita com:
hdl:2099.1/19791
Correu electrònic de l'autorf.perez.rafolsgmail.com
Tutor / directorLarsson, Roland
Tipus de documentProjecte/Treball Final de Carrera
Data2012
Condicions d'accésAccés obert
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continguts d'aquesta obra estan subjectes a la llicència de Creative Commons
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Reconeixement-NoComercial-SenseObraDerivada 3.0 Espanya
Abstract
This work represents an effort to achieve greater understanding on the lubrication of engine journal bearings and develop a model which can be used in future work for the optimization of load carrying capacity and minimization of frictional power loss.
In a first step a model is presented which include dynamic loading, cavitation, non-Newtonian lubrication and groove geometry. The model is incorporated in a commercial multiphysics
software (COMSOL). Cavitation and non-Newtonian lubrication are complex phenomena which require model simplifications. Cavitation model simplification has been chosen after evaluation of solutions found in literature while a new model one has been proposed for non-Newtonian
lubrication.
The simulation model for journal bearings has then been used to analyze bearing performance under geometrical and oil parameters variation. Main results include that typical oil definition with viscosity values at high and low shear rates is insufficient and that higher eccentricity in operating conditions helps bearing stability against perturbations.
MatèriesInternal combustion engines -- Bearings, Lubrication and lubricants -- Computer simulation, Motors de combustió interna -- Coixinets, Lubrificació i lubrificants -- Simulació per ordinador
TitulacióENGINYERIA INDUSTRIAL (Pla 1994)
Fitxers | Descripció | Mida | Format | Visualitza |
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modeling of com ... ne bearing lubrication.pdf | Report | 2,351Mb | Visualitza/Obre |