Modeling of Diesel Engine Spray, Combustion and Emissions

Modeling of Diesel Engine Spray, Combustion and Emissions

Abstract: Quasi-dimensional multi-zone spray combustion model was developed and implemented into a full cycle diesel engine simulation so as to predict engine performance, fuel economy and pollutant emissions. The model is able to predict heat release process, performance and emissions with acceptable fidelity over a wide range of engine operating conditions.

Researchers:
Dohoy Jung
Dennis Assanis

Sponsors:
Automotive Research Center (U.S. Army TACOM)

Goals:
Develop more physically based sub-models for the multi-zonal spray and combustion model, i.e. include the swirl motion of the cylinder charge, the wall impingement of the fuel spray and detailed radiation model. Validate the ability of the current model to simulate split injections. Include the capability for predicting the effect of EGR on combustion and emissions.

Publications:
Dohoy Jung and Dennis N. Assanis," Multi-Zone Direct-Injection Diesel Spray Combustion Model for Cycle Simulation Studies of Engine Performance and Emission," SAE Paper 2001-01-1246, 2001