Heat Release Prediction Modelling for Gasoline Compression-Ignition Engines with Multiple Injection Events
A zero-dimensional heat release prediction model was developed for compression ignition engines. This type of model can be leveraged for parametric studies, off-line optimization to reduce experimental efforts as well as model-based control strategies. In this particular case, the combustion model will be leveraged in future efforts to control the combustion in compression ignition engines operating on gasoline-like fuels. To allow for a realistic representation of the in-cylinder combustion process, a spray model has been employed to allow for the quantification of fuel distribution as well as turbulent kinetic energy within the injection spray. The combustion framework is capable of predicting premixed as well as mixing controlled combustion based on the underlying spray model which is applied to every injection event. Fuel is being assigned to various combustion events based on the air-fuel mixture within the spray.