STRATEGY FOR FUELING A DIESEL ENGINE BY SELECTIVE USE OF FUELING MAPS TO EXTEND RANGE OF HCCI COMBUSTION

摘要

A compression ignition engine (60) has a control system (66) for processing data, one or more combustion chambers (62), and fuel injectors (64) for injecting fuel into the chambers. In a first embodiment, the control system controls fueling by processing engine speed and load, to select one of three fueling modes (HCCI+RVT, HCCI+VVT, and CD+RVT) for operating the engine. In a second embodiment, one of four modes (HCCI+RVT, HCCI+IVC, HCCI+IVC+EVC, and CD+RVT) is selected. The invention extends the range for using HCCI combustion.