A Mathematical Model of the Evaporation of the Oil Film Deposed on the Cylinder Surface of IC Engines

972920

10/01/1997

Event
International Fuels & Lubricants Meeting & Exposition
Authors Abstract
Content
The present paper describes a calculation procedure aimed to evaluate the evaporative loss of the lubricating oil deposed on the cylinder surface of i.c. engines.
The model is based on the simultaneous solution of the diffusion and energy equations referred to the liquid/gas interface.
A parametric analysis has been carried out to investigate the influence of some variables on oil evaporative losses. The calculation results show that both cylinder surface temperature and lubricating oil composition are significant parameters. Conversely, the oil film thickness does not seem to play an important role in evaporative loss.
Furthermore, it has been ascertained that the lubricating oil evaporation is increased during the intake stroke.
In any event, the evaporative loss represents a small percentage (a few percentage points) of total oil consumption if the distillate fractions are not too much light.
Meta TagsDetails
DOI
https://doi.org/10.4271/972920
Pages
11
Citation
De Petris, C., Giglio, V., and Police, G., "A Mathematical Model of the Evaporation of the Oil Film Deposed on the Cylinder Surface of IC Engines," SAE Technical Paper 972920, 1997, https://doi.org/10.4271/972920.
Additional Details
Publisher
Published
Oct 1, 1997
Product Code
972920
Content Type
Technical Paper
Language
English