Technical Paper
Behavior of Fuel Droplets in Pulsative Air Flow Through a Model Intake Manifold
1989-11-01
891297
A theoretical analysis supplemented by an experimental work was conducted of the behavior of liquid fuel droplets subjected to a pulsative air flow in a T-branched duct of a square cross section for a better understanding of fuel transport process in an intake manifold of an automotive spark ignition engine. The analysis includes the formulation of the simultaneous equations of momentum, heat and mass transfer for computing the locations, temperatures and diameters of moving droplets as a function of spatial coordinates. The results were expressed primarily in terms of the location at the impact deposition of droplets relevant to the formation of liquid film on the bottom wall of the duct. It was revealed that the calculated results agreed well with the empirical data.