Numerical Studies on Diesel Combustion using the Fuel Spray Model with Cavitation Collapse Process

Abstract

The premixed charge compression ignition combustion combined with EGR and high pressure fuel injection at the early stage of the compression process favorably reduce the emissions from direct-injection diesel engines. In this study, numerical analysis was conducted to investigate the above-mentioned combustion regime by using the fuel spray model that considers the collapse energy of cavitation bubbles formed in the fuel nozzle based on the computational fluid dynamics code, KIVA-3V.