A Model for Absorption and Desorption of Fuel Vapour by Cylinder Lubricating Oil Films and Its Contribution to Hydrocarbon Emissions Dept. of Mechanical Engineering, University of Technology, Loughborough, UK

Format:

Conference/Event

Author/Creator:

Dent, J. C., author.

Conference Name:

SAE International Congress & Exposition (1983-02-28 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1983

Summary:

The absorption and desorption of fuel by cylinder lubricating oil films has been modelled using principles of mass transfer. Henry's Law for a dilute solution of fuel in oil is used to relate gas to liquid phase fuel concentrations. Mass transfer conductances in gas and liquid phases are considered, the former via use of Reynold's Analogy to engine heat transfer data, the latter through assuming molecular diffusion through an effective penetration depth of the oil film.Oxidation of desorbed fuel is assumed complete if the mean of burned gas and lubricating oil film temperatures is greater than 1100K,. Below this value the desorbed fuel is considered to contribute to hydrocarbon emissions.Comparison with engine test data corroborate the absorption/desorption hypothesis. The model indicates the equal importance of gas and liquid phase conductances

Notes:

Vendor supplied data

Publisher Number:

830652

Access Restriction:

Restricted for use by site license