Abstract
The effects of engine speed, torque, and oil temperature on the fuel evaporation from diluted oil in diesel engines were measured to construct an empirical model to predict the fuel evaporation rate. The coupling of the evaporation model and the model developed in our previous report to predict post injection sprays provides the method to estimate the oil dilution rate during the engine operation with regeneration. The model validation were performed at three constant speed conditions and two transient cycles. The oil dilution rate predicted by the model has a good agreement with the experimental data measured by Gas Chromatography.
