Combustion phasing and work output modeling for homogeneous charge compression ignition (HCCI) engines

Combustion phasing and work output are the two critical indicators for achieving and maintaining homogeneous combustion for homogeneous charge compression ignition (HCCI) engines. However, the complicated thermodynamic process keeps the combustion phasing model from being explicit. The current models for CA50 (crank angle when 50% fuel consumed) requires information that is hardly available for commercial engines. In this paper, polynomial …