Modeling and control of a two stroke HCCI engine

In this paper we propose a model of a two stroke homogeneous charge compression ignition (HCCI) engine which captures the important characteristics of gas exchange processes taking place in a two stroke mode. The model allows a direct flow of gases between intake and exhaust volumes and hence offers a more detailed gas modeling than single volume models widely accepted in the literature. We compare simulation results obtained from the model with experimental data collected with a single cylinder HCCI engine. We also propose a simple control strategy allowing effective tracking of reference signals in indicated mean effective pressure (IMEP) and combustion phasing.