Effects of Negative Valve Overlap on the Auto-Ignition Process of Lean Ethanol/Air Mixture in HCCI-Engines
This paper presents a computational study of the effects of fuel and thermal stratifications on homogenous charge compression ignition (HCCI) combustion process in a personal car sized internal combustion engine. Stratified HCCI conditions are generated using a negative valve overlap (NVO) technique. The aims of this study are to improve the understanding of the flow dynamics, the heat and mass tr