CFD Studies of Combustion and In-Cylinder Soot Trends in a DI Diesel Engine - Comparison to Direct Photography Studies

2000-01-1889

06/19/2000

Event
CEC/SAE Spring Fuels & Lubricants Meeting & Exposition
Authors Abstract
Content
The main objective of this work is to develop a CFD model for studies of combustion and in-cylinder soot trends in a single cylinder DI diesel engine based on the Scania 14 liter V8 engine. The evaluation of the model is made with respect to ignition, cylinder pressure, heat release, onset of diffusion controlled combustion, liquid fuel spray penetration, in-cylinder soot distribution and exhaust soot level. The simulation results are compared to direct photography images and two-color calculations of temperature and soot distribution in a corresponding optical access test engine. This comparison shows good agreement concerning diffusion flame onset, liquid penetration, rate of heat release and local temperature distribution. Moreover, the prediction of in-cylinder soot distribution after end of injection also agrees well with the two-color calculation. To validate the model, the simulation is repeated for three different sets of operating conditions. For all cases, the simulation follows the trends expected from measurements and visualization.
Meta TagsDetails
DOI
https://doi.org/10.4271/2000-01-1889
Pages
19
Citation
Dahlén, L., and Larsson, A., "CFD Studies of Combustion and In-Cylinder Soot Trends in a DI Diesel Engine - Comparison to Direct Photography Studies," SAE Technical Paper 2000-01-1889, 2000, https://doi.org/10.4271/2000-01-1889.
Additional Details
Publisher
Published
Jun 19, 2000
Product Code
2000-01-1889
Content Type
Technical Paper
Language
English