Fluid Dynamics in Double Venturies of Carburetor : 3rd Report, Fuel Atomization and Its Effect on Air Flow Resistance

Abstract

The observation of fuel atomization and the measurements of fuel droplets are performed to examine the spray flow in the double venturies of carburetor, which is the interaction process between spouted fuel and air flow. Based on the above results, the spray transportation in the small venturi is analized using one dimensional model. It is concluded that the unbalancing by fuel spout in pressure between small venturi and large venturi is not caused from the evaporation of fuel or momentum losses of air flow, but from the change of the air flow pattern.