FLOW PATTERN OBSERVATIONS OF GASOLINE DISSOLVED CO₂ INSIDE AN INJECTOR

Spray formation by fuel-dissolved gas atomization is studied. The geometry of the injector, which consists of two orifices separated by an expansion chamber, was optimized to produce spray with minimal Sauter mean diameter (SMD). Special attention is drawn to the flow pattern inside the expansion chamber and on its significant impact on the resultant spray quality. Three possible characteristic regimes were identified: all liquid flow, …