Technical Paper
Air/Fuel Distribution Simulation in a Port Injected Gasoline Lean-burn Engine
2001-03-05
2001-01-1230
In this paper, both numerical and experimental results of in-cylinder mixture distribution are presented, and predictions agree with measured data very well. With the simulation technique described herein, mixture ignitability in a port injection gasoline lean-burn engine can be satisfactorily evaluated based on predicted in-cylinder mixture stratification. The validation of the simulation technique can be divided into three stages. First, calculation results of in-cylinder flows are compared with measured data from Particle Image Velocimetry (PIV) measurements. Second, the accuracy of spray calculations is verified by comparing with spray measurements inside an atmospheric pressure bomb. Finally, the validated simulation technique is used to model engine intake and compression strokes with fuel injection.