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Combustion in a Swirl Chamber Diesel Engine Simulation by Computation of Fluid Dynamics

Fa. Gerhartl-Ulrich Ritscher
Volkswagen AG-Tim Sebastian Strauss, Georg Wolfgang Schweimer
Published 1995-02-01 by SAE International in United States
The combustion and pollutant formation processes in a 1.9 I IDI Diesel engine are simulated with the SPEED computational fluid dynamics (CFD) code.A part and a full load simulation of the production engine and a full load simulation of a modified engine design are analyzed. The mixing and combustion process is visualized for all cases by means of the isosurfaces of stoichiometric mixture. The correlation of this surface with global quantities as heat release, mean pressure and temperature and swirl ratio is emphasized. The global properties are presented resolved for the swirl, main chamber and the swirl chamber throat separately. The formation of thermal NO and soot are simulated and analyzed.
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