Abstract
We applied a multivariate analysis based on an experimental design of quality engineering, and picked out several engine parameters which influence gasoline HCCI combustion stability. We clarified the characteristics of engine parameters in a gasoline HCCI operation area and propose the control concept: air-fuel mixture control is applied to each-cylinder injection control while keeping the mixture homogeneous. Combustion conditions and A/F need to be detected and fed back individually for each cylinder. With the proposed concept, it is possible to keep the HCCI combustion stable in multi-cylinder gasoline HCCI engine.
